New upstream version 2.3.4

ACKNOWLEDGEMENTS

@@ -20,7 +20,7 @@ Using the DLPI support on SysV systems to get the host MAC address in check_dhcp
 Stenberg, Daniel
 Copyright (c) 1996 - 2004, Daniel Stenberg, <daniel@haxx.se>
 http://curl.haxx.se/
-Use of duplication of macros in m4/np_curl.m4 (slighly adapted for m4/uriparser.m4 too)
+Use of duplication of macros in m4/np_curl.m4 (slightly adapted for m4/uriparser.m4 too)
 
 Coreutils team
 Copyright (C) 91, 1995-2004 Free Software Foundation, Inc.

INSTALL

@@ -1,8 +1,8 @@
 Installation Instructions
 *************************
 
-   Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free
+   Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software
-Software Foundation, Inc.
+Foundation, Inc.
 
    Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright

NEWS

@@ -1,5 +1,39 @@
 This file documents the major additions and syntax changes between releases.
 
+2.3.4 18th Oct 2023
+	ENHANCEMENTS
+	* check_curl: added --cookie-jar and doing proper cleanup of libcurl
+	* check_curl: Include all IPs from getaddrinfo() in curl DNS cache
+	* check_dhcp: Add dhcp rogue detection
+	* check_disk: add ignore-missing option to return OK for missing fs
+	* check_disk_smb: allow checking 0-sized resource (ex. IPC$)
+	* check_disk: The options to include or exclude specific file systems now allow the usage of regex(7)
+	* check_icmp: Add support to Jitter, MOS and Score
+	* check_mysql: Detect running mysqldump and handle it more gracefully
+	* check_procs: Implement --exclude-process to exclude specific processes
+	* check_smtp: add new longoption --tls
+	* check_smtp: Add option to prefix PROXY header
+	* check_smtp: Add support for SMTP over TLS
+	* check_smtp: Add support for SNI
+	* check_snmp: Implement option to ignore mib file parsing errors
+	* check_users: prefer systemd-logind over utmp
+
+	FIXES
+	* check_disk: Display SI units correctly
+	* check_ircd: use pack_sockaddr_in rather than hand-rolled
+	* check_log/check_oracle/check_sensors: fixed the outputs of the help functionality
+	* check_mysql: Add mysql_close to avoid spamming the server logs
+	* check_smtp: add missing -r option in usage
+	* check_snmp: disable multiplier when unused
+	* check_wave: Use compile time determined path to snmpget
+	
+	GENERAL
+	* Sync with the Gnulib code 668c0b8ffa
+	* Set autoconf prerequisite version to 2.64
+	* Remove sha1 and use sha256 in some parts of the plugin structure
+	* A lot of compiler warnings were fixed
+	* Some code was refactored a little bit
+
 2.3.3 2nd Feb 2023
         ENHANCEMENTS
 	using PRId64 and PRIu64 instead of %ld directly
@@ -9,12 +43,12 @@ This file documents the major additions and syntax changes between releases.
 	check_http/check_curl: add chunked encoding test
 	check_log: Added --exclude to exclude patterns
 	check_log: Add tests
-	check_disk: Clarify usage possibilites
+	check_disk: Clarify usage possibilities
 
 	FIXES
 	fixed two PRId64 to PRIu64 in perfdata_uint64
-	check_pgsql: Removing is_pg_dbname alltogether,using postgres API.
+	check_pgsql: Removing is_pg_dbname altogether,using postgres API.
-	check_http: Remove superflous CRLF in HTTP-Requests
+	check_http: Remove superfluous CRLF in HTTP-Requests
 	check_curl: detect ipv6
 	check_icmp: fix parsing help/version long options
 	check_http: fix test plan
@@ -40,7 +74,7 @@ This file documents the major additions and syntax changes between releases.
 
 2.3.2 20th Oct 2022
 	GENERAL
-	Use netcat-openbsd for debian explicitely (by @RincewindsHat #1704)
+	Use netcat-openbsd for debian explicitly (by @RincewindsHat #1704)
 	Replace egrep with grep -E (by @RincewindsHat #1791)
 	Use silent automake by default (by @RincewindsHat #1747)
 
@@ -123,7 +157,7 @@ This file documents the major additions and syntax changes between releases.
 	check_log: Modernize check log (by @RincewindsHat #1692)
 	check_mailq: remove duplicate W=i/C=i args in check_mailq.pl (by @ichdasich #1755)
 	check_ntp: Check ntp remove unused variables (by @RincewindsHat #1781)
-	check_pgsql: Using snprintf which honors the buffers size and guarantees null temination. (Closes: #1601) (by @waja #1663)
+	check_pgsql: Using snprintf which honors the buffers size and guarantees null termination. (Closes: #1601) (by @waja #1663)
 	check_procs: Fix double percentage sign in usage (by @RincewindsHat #1743)
 	check_sensors.sh: Make shellcheck happier (by @RincewindsHat #1679)
 	check_snmp: Fixed option description authpassword -> authpasswd + whitespaces (by @RincewindsHat #1676)
@@ -165,7 +199,7 @@ This file documents the major additions and syntax changes between releases.
 	check_apt: adding packages-warning option
 	check_load: Adding top consuming processes option
 	check_http: Adding Proxy-Authorization and extra headers
-	check_snmp: make calcualtion of timeout value in help output more clear
+	check_snmp: make calculation of timeout value in help output more clear
 	check_uptime: new plugin for checking uptime to see how long the system is running
 	check_curl: check_http replacement based on libcurl
 	check_http: Allow user to specify HTTP method after proxy CONNECT
@@ -195,7 +229,7 @@ This file documents the major additions and syntax changes between releases.
 	check_procs: improve command examples for 'at least' processes
 	check_swap: repaired "-n" behaviour
 	check_disk: include -P switch in help
-	check_mailq: restore accidentially removed options
+	check_mailq: restore accidentally removed options
 
 2.2 29th November 2016
 	ENHANCEMENTS
@@ -236,7 +270,7 @@ This file documents the major additions and syntax changes between releases.
 	check_ssh now returns CRITICAL for protocol/version errors
 	If a plugin is invoked with -h/--help or -V/--version, the exit status
 	  is now UNKNOWN
-	The superseeded check_ntp.pl was removed, please use check_ntp_peer or
+	The superseded check_ntp.pl was removed, please use check_ntp_peer or
 	  check_ntp_time instead
 
 2.1.2 16th October 2015
@@ -263,7 +297,7 @@ This file documents the major additions and syntax changes between releases.
 	New check_mysql -n option to ignore authentication failures
 	Added IP and port or socket name to error messages
 	New check_ntp_time -o option to add expected offset
-	check_disk shows now troubled partions in verbose mode
+	check_disk shows now troubled partitions in verbose mode
 	check_dig has now support for drill and dig
 	check_dig has now support for -6 option
 	Add performance data to check_file_age
@@ -357,10 +391,10 @@ This file documents the major additions and syntax changes between releases.
 	New check_procs -k option to ignore kernel threads (on Linux)
 	Let check_procs use /proc/<PID>/exe (if available) instead of getpid(2), unless -T is specified
 	Let check_mysql support SSL
-	Let check_mysql add perfromance metrics for all checks
+	Let check_mysql add performance metrics for all checks
 	New check_mysql -f option to specify a client options file
 	New check_mysql -g option to specify a client options group
-	New check_snmp --offset option to allow for adding/substracting an offset value to sensor data
+	New check_snmp --offset option to allow for adding/subtracting an offset value to sensor data
 	Let check_snmp support an arbitrary number of OIDs
 	Let check_ide_smart support NetBSD
 
@@ -375,7 +409,7 @@ This file documents the major additions and syntax changes between releases.
 	Fix deprecated imports of check_nmap.py
 
 	WARNINGS
-	check_http behaviour of -k/--header changed since it does not seperate multiple headers by semicolons anymore. Use multiple -k switches instead.
+	check_http behaviour of -k/--header changed since it does not separate multiple headers by semicolons anymore. Use multiple -k switches instead.
 	check_http's --proxy_authorization option is now called --proxy-authorization (it was always documented this way)
 	The contrib directory has been removed from this distribution
 
@@ -526,7 +560,7 @@ This file documents the major additions and syntax changes between releases.
 	check_ntp and check_ntp_peer now show proper jitter/stratum thresholds longopts in --help
 	check_dns now allow to repeat -a to match multiple possibly returned address (common with load balancers)
 	check_mysql and check_radius now try clearing password in processlist just like check_mysql_query
-	check_mysql and check_mysql_query now support sockets explicitely (-s, --socket)
+	check_mysql and check_mysql_query now support sockets explicitly (-s, --socket)
 	negate now has the ability to replace the status text as well (-s, --substitute)
 	Added performance data to check_ping
 	Added support for --extra-opts in all C plugins (disabled by default, see configure --help)
@@ -566,7 +600,7 @@ This file documents the major additions and syntax changes between releases.
 	New check_disk option -L: Only check local filesystems, but call stat() on remote ones, too.
 	  Thus accessibility of remote filesystems can be checked without any threshold comparison.
 	Check_disk's --help now prints some examples for the new features introduced in 1.4.8
-	New check_disk -i/-I option to ignore pathes/partitions based on regular expressions
+	New check_disk -i/-I option to ignore paths/partitions based on regular expressions
 	New check_disk -A option to select all filesystems explicitly
 	WARNING: check_disk's -E option must now be passed before -p or -r/-R arguments
 	  Passing -E after -p or -r results in UNKNOWN state, now
@@ -615,7 +649,7 @@ This file documents the major additions and syntax changes between releases.
 	Fixed MKINSTALLDIRS problem in po/
 	./configure now detects if possible to compile check_mysql
 	Fixed broken HELO in check_smtp
-	check_icmp now allows to set a minimum number of hosts required for successs (-m)
+	check_icmp now allows to set a minimum number of hosts required for success (-m)
 	check_icmp fix for *BSD when running for long time
 	check_ping times out 1 second quicker if host is unreachable
 	Root plugins installed with world executable

NP-VERSION-GEN

@@ -6,7 +6,7 @@
 SRC_ROOT=`dirname $0`
 
 NPVF=NP-VERSION-FILE
-DEF_VER=2.3.3
+DEF_VER=2.3.4
 
 LF='
 '

NPTest.pm

@@ -151,14 +151,14 @@ of testing against a set of desired exit status values.
 =item *
 
 Firstly, if C<$desiredExitStatus> is a reference to an array of exit
-stati, if the actual exit status of the command is present in the
+statuses, if the actual exit status of the command is present in the
 array, it is used in the call to C<Test::ok(...)> when testing the
 exit status.
 
 =item *
 
 Alternatively, if C<$desiredExitStatus> is a reference to a hash of
-exit stati (mapped to the strings "continue" or "skip"), similar
+exit  statuses(mapped to the strings "continue" or "skip"), similar
 processing to the above occurs with the side affect of determining if
 any generated output testing should proceed. Note: only the string
 "skip" will result in generated output testing being skipped.
@@ -207,7 +207,7 @@ under the same terms as the Monitoring Plugins release.
 
 my( %CACHE ) = ();
 
-# I'm not really sure wether to house a site-specific cache inside
+# I'm not really sure whether to house a site-specific cache inside
 # or outside of the extracted source / build tree - lets default to outside
 my( $CACHEFILENAME ) = ( exists( $ENV{'NPTEST_CACHE'} ) && $ENV{'NPTEST_CACHE'} )
                        ? $ENV{'NPTEST_CACHE'} : "/var/tmp/NPTest.cache"; # "../Cache.pdd";

THANKS

@@ -2,22 +2,25 @@ This software is brought to you by the Monitoring Plugins Development Team. Howe
 there have been many contributors to this project. Everyone below has helped in 
 raising bug reports, creating patches or contributing new plugins.
 
-Elan Ruusamäe
+Thoralf Rickert-Wendt
-Randy O'Meara
-Wolfgang Karall-Ahlborn
-Nicolai Søborg
-dag rob?le
-Diego Elio Pettenò
 Matthias Hähnel
+Randy O'Meara
+dag rob?le
 Marc Sánchez
+Arkadiusz Miśkiewicz
 Aksel Sjögren
 fabiodds
+Diego Elio Pettenò
+Nicolai Søborg
+Elan Ruusamäe
+Matthias Döhler
+Wolfgang Karall-Ahlborn
 Oskar Ahner
 Lance Albertson
 David Alden
 Patrick Allen
-Rodger Allen
 Paul Allen
+Rodger Allen
 Felipe Gustavo de Almeida
 Michael Almond
 Michael Anthon
@@ -44,6 +47,7 @@ Hilko Bengen
 Jason Benguerel
 Allan Bennett
 Booker C. Bense
+Björn Berg
 Guy Van Den Bergh
 Andrew Berglund
 Jimmy Bergman
@@ -75,6 +79,7 @@ Jethro Carr
 Jim Carroll
 Ian Cass
 Arnold Cavazos
+Patrick Cervicek
 Alex Chaffee
 Yannick Charton
 Stephane Chazelas
@@ -125,13 +130,13 @@ Reuben Farrelly
 Mark Favas
 Duncan Ferguson
 Juan Carlos Fernandez
-Paulo Afonso Graner Fessel
 Paulo Fessel
+Paulo Afonso Graner Fessel
 James Fidell
 Tobias Fiebig
 Roman Fiedler
-Johan Fischer
 Bernhard Fischer
+Johan Fischer
 Matthias Flacke
 Martin Foster
 Felix Frank
@@ -161,12 +166,13 @@ Sebastien Guay
 Linda Guo
 Jon Hallett
 Steve Hanselman
-Ask Bjoern Hansen
 Jacob Hansen
+Ask Bjoern Hansen
 Sebastian Harl
 Michael Haro
 Olli Hauer
 Gunnar Hellekson
+Stuart Henderson
 Geert Hendrickx
 Sebastian Herbszt
 Johannes Herlitz
@@ -209,6 +215,7 @@ Frederic Krueger
 Claudio Kuenzler
 Marcel Kuiper
 Christian Kujau
+Thorsten Kukuk
 Alexander Kulak
 Bill Kunkel
 Thomas Kurschel
@@ -236,6 +243,7 @@ Jason Lunn
 Davide Madrisan
 Guenther Mair
 Pawel Malachowski
+Gerardo Malazdrewicz
 Ricardo Maraschini
 Michael Markstaller
 John Marquart
@@ -261,6 +269,7 @@ Jonathan Milby
 Russell Miller
 Eric J. Mislivec
 Janos Mohacsi
+John Morrissey
 Andreas Motl
 Tomas Mozes
 Gerd Mueller
@@ -297,6 +306,7 @@ Matt Pounsett
 Peter Pramberger
 Joe Presbrey
 Will Preston
+Platon Pronko
 Arnaud Quette
 Darian Rackham
 Peter Radcliffe
@@ -337,6 +347,8 @@ Cove Schneider
 Enrico Scholz
 Sebastian Schubert
 Christopher Schultz
+Kristian Schuster
+Franz Schwartau
 Russell Scibetti
 Noel Sebastien
 Andreas Seemueller
@@ -359,6 +371,7 @@ David Sullivan
 Kjell Sundtjonn
 Ziya Suzen
 Christian Tacke
+Stefan Taferner
 Danijel Tasov
 Michael Tiernan
 Ben Timby
@@ -369,6 +382,7 @@ Gabriele Tozzi
 Kyle Tucker
 Jerome Tytgat
 Daniel Uhlmann
+Patrick Uiterwijk
 Stéphane Urbanovski
 Matthias Urlichs
 Matteo HCE Valsasna

build-aux/compile

@@ -1,348 +0,0 @@
-#! /bin/sh
-# Wrapper for compilers which do not understand '-c -o'.
-
-scriptversion=2018-03-07.03; # UTC
-
-# Copyright (C) 1999-2021 Free Software Foundation, Inc.
-# Written by Tom Tromey <tromey@cygnus.com>.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-# This file is maintained in Automake, please report
-# bugs to <bug-automake@gnu.org> or send patches to
-# <automake-patches@gnu.org>.
-
-nl='
-'
-
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent tools from complaining about whitespace usage.
-IFS=" ""	$nl"
-
-file_conv=
-
-# func_file_conv build_file lazy
-# Convert a $build file to $host form and store it in $file
-# Currently only supports Windows hosts. If the determined conversion
-# type is listed in (the comma separated) LAZY, no conversion will
-# take place.
-func_file_conv ()
-{
-  file=$1
-  case $file in
-    / | /[!/]*) # absolute file, and not a UNC file
-      if test -z "$file_conv"; then
-	# lazily determine how to convert abs files
-	case `uname -s` in
-	  MINGW*)
-	    file_conv=mingw
-	    ;;
-	  CYGWIN* | MSYS*)
-	    file_conv=cygwin
-	    ;;
-	  *)
-	    file_conv=wine
-	    ;;
-	esac
-      fi
-      case $file_conv/,$2, in
-	*,$file_conv,*)
-	  ;;
-	mingw/*)
-	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
-	  ;;
-	cygwin/* | msys/*)
-	  file=`cygpath -m "$file" || echo "$file"`
-	  ;;
-	wine/*)
-	  file=`winepath -w "$file" || echo "$file"`
-	  ;;
-      esac
-      ;;
-  esac
-}
-
-# func_cl_dashL linkdir
-# Make cl look for libraries in LINKDIR
-func_cl_dashL ()
-{
-  func_file_conv "$1"
-  if test -z "$lib_path"; then
-    lib_path=$file
-  else
-    lib_path="$lib_path;$file"
-  fi
-  linker_opts="$linker_opts -LIBPATH:$file"
-}
-
-# func_cl_dashl library
-# Do a library search-path lookup for cl
-func_cl_dashl ()
-{
-  lib=$1
-  found=no
-  save_IFS=$IFS
-  IFS=';'
-  for dir in $lib_path $LIB
-  do
-    IFS=$save_IFS
-    if $shared && test -f "$dir/$lib.dll.lib"; then
-      found=yes
-      lib=$dir/$lib.dll.lib
-      break
-    fi
-    if test -f "$dir/$lib.lib"; then
-      found=yes
-      lib=$dir/$lib.lib
-      break
-    fi
-    if test -f "$dir/lib$lib.a"; then
-      found=yes
-      lib=$dir/lib$lib.a
-      break
-    fi
-  done
-  IFS=$save_IFS
-
-  if test "$found" != yes; then
-    lib=$lib.lib
-  fi
-}
-
-# func_cl_wrapper cl arg...
-# Adjust compile command to suit cl
-func_cl_wrapper ()
-{
-  # Assume a capable shell
-  lib_path=
-  shared=:
-  linker_opts=
-  for arg
-  do
-    if test -n "$eat"; then
-      eat=
-    else
-      case $1 in
-	-o)
-	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
-	  eat=1
-	  case $2 in
-	    *.o | *.[oO][bB][jJ])
-	      func_file_conv "$2"
-	      set x "$@" -Fo"$file"
-	      shift
-	      ;;
-	    *)
-	      func_file_conv "$2"
-	      set x "$@" -Fe"$file"
-	      shift
-	      ;;
-	  esac
-	  ;;
-	-I)
-	  eat=1
-	  func_file_conv "$2" mingw
-	  set x "$@" -I"$file"
-	  shift
-	  ;;
-	-I*)
-	  func_file_conv "${1#-I}" mingw
-	  set x "$@" -I"$file"
-	  shift
-	  ;;
-	-l)
-	  eat=1
-	  func_cl_dashl "$2"
-	  set x "$@" "$lib"
-	  shift
-	  ;;
-	-l*)
-	  func_cl_dashl "${1#-l}"
-	  set x "$@" "$lib"
-	  shift
-	  ;;
-	-L)
-	  eat=1
-	  func_cl_dashL "$2"
-	  ;;
-	-L*)
-	  func_cl_dashL "${1#-L}"
-	  ;;
-	-static)
-	  shared=false
-	  ;;
-	-Wl,*)
-	  arg=${1#-Wl,}
-	  save_ifs="$IFS"; IFS=','
-	  for flag in $arg; do
-	    IFS="$save_ifs"
-	    linker_opts="$linker_opts $flag"
-	  done
-	  IFS="$save_ifs"
-	  ;;
-	-Xlinker)
-	  eat=1
-	  linker_opts="$linker_opts $2"
-	  ;;
-	-*)
-	  set x "$@" "$1"
-	  shift
-	  ;;
-	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
-	  func_file_conv "$1"
-	  set x "$@" -Tp"$file"
-	  shift
-	  ;;
-	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
-	  func_file_conv "$1" mingw
-	  set x "$@" "$file"
-	  shift
-	  ;;
-	*)
-	  set x "$@" "$1"
-	  shift
-	  ;;
-      esac
-    fi
-    shift
-  done
-  if test -n "$linker_opts"; then
-    linker_opts="-link$linker_opts"
-  fi
-  exec "$@" $linker_opts
-  exit 1
-}
-
-eat=
-
-case $1 in
-  '')
-     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
-     exit 1;
-     ;;
-  -h | --h*)
-    cat <<\EOF
-Usage: compile [--help] [--version] PROGRAM [ARGS]
-
-Wrapper for compilers which do not understand '-c -o'.
-Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
-arguments, and rename the output as expected.
-
-If you are trying to build a whole package this is not the
-right script to run: please start by reading the file 'INSTALL'.
-
-Report bugs to <bug-automake@gnu.org>.
-EOF
-    exit $?
-    ;;
-  -v | --v*)
-    echo "compile $scriptversion"
-    exit $?
-    ;;
-  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
-  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
-    func_cl_wrapper "$@"      # Doesn't return...
-    ;;
-esac
-
-ofile=
-cfile=
-
-for arg
-do
-  if test -n "$eat"; then
-    eat=
-  else
-    case $1 in
-      -o)
-	# configure might choose to run compile as 'compile cc -o foo foo.c'.
-	# So we strip '-o arg' only if arg is an object.
-	eat=1
-	case $2 in
-	  *.o | *.obj)
-	    ofile=$2
-	    ;;
-	  *)
-	    set x "$@" -o "$2"
-	    shift
-	    ;;
-	esac
-	;;
-      *.c)
-	cfile=$1
-	set x "$@" "$1"
-	shift
-	;;
-      *)
-	set x "$@" "$1"
-	shift
-	;;
-    esac
-  fi
-  shift
-done
-
-if test -z "$ofile" || test -z "$cfile"; then
-  # If no '-o' option was seen then we might have been invoked from a
-  # pattern rule where we don't need one.  That is ok -- this is a
-  # normal compilation that the losing compiler can handle.  If no
-  # '.c' file was seen then we are probably linking.  That is also
-  # ok.
-  exec "$@"
-fi
-
-# Name of file we expect compiler to create.
-cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
-
-# Create the lock directory.
-# Note: use '[/\\:.-]' here to ensure that we don't use the same name
-# that we are using for the .o file.  Also, base the name on the expected
-# object file name, since that is what matters with a parallel build.
-lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
-while true; do
-  if mkdir "$lockdir" >/dev/null 2>&1; then
-    break
-  fi
-  sleep 1
-done
-# FIXME: race condition here if user kills between mkdir and trap.
-trap "rmdir '$lockdir'; exit 1" 1 2 15
-
-# Run the compile.
-"$@"
-ret=$?
-
-if test -f "$cofile"; then
-  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
-elif test -f "${cofile}bj"; then
-  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
-fi
-
-rmdir "$lockdir"
-exit $ret
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'before-save-hook 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC0"
-# time-stamp-end: "; # UTC"
-# End:

build-aux/config.rpath

@@ -2,7 +2,7 @@
 # Output a system dependent set of variables, describing how to set the
 # run time search path of shared libraries in an executable.
 #
-#   Copyright 1996-2013 Free Software Foundation, Inc.
+#   Copyright 1996-2023 Free Software Foundation, Inc.
 #   Taken from GNU libtool, 2001
 #   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 #
@@ -367,15 +367,11 @@ else
     dgux*)
       hardcode_libdir_flag_spec='-L$libdir'
       ;;
-    freebsd2.2*)
+    freebsd2.[01]*)
-      hardcode_libdir_flag_spec='-R$libdir'
-      hardcode_direct=yes
-      ;;
-    freebsd2*)
       hardcode_direct=yes
       hardcode_minus_L=yes
       ;;
-    freebsd* | dragonfly*)
+    freebsd* | dragonfly* | midnightbsd*)
       hardcode_libdir_flag_spec='-R$libdir'
       hardcode_direct=yes
       ;;
@@ -548,13 +544,11 @@ case "$host_os" in
   dgux*)
     library_names_spec='$libname$shrext'
     ;;
-  freebsd* | dragonfly*)
+  freebsd[23].*)
-    case "$host_os" in
+    library_names_spec='$libname$shrext$versuffix'
-      freebsd[123]*)
+    ;;
-        library_names_spec='$libname$shrext$versuffix' ;;
+  freebsd* | dragonfly* | midnightbsd*)
-      *)
+    library_names_spec='$libname$shrext'
-        library_names_spec='$libname$shrext' ;;
-    esac
     ;;
   gnu*)
     library_names_spec='$libname$shrext'

build-aux/depcomp

@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/ltmain.sh

@@ -189,7 +189,7 @@ func_basename ()
 #             to NONDIR_REPLACEMENT.
 #             value returned in "$func_dirname_result"
 #   basename: Compute filename of FILE.
-#             value retuned in "$func_basename_result"
+#             value returned in "$func_basename_result"
 # Implementation must be kept synchronized with func_dirname
 # and func_basename. For efficiency, we do not delegate to
 # those functions but instead duplicate the functionality here.
@@ -4394,7 +4394,7 @@ EOF
         {
           /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX
              namespace, but it is not one of the ones we know about and
-             have already dealt with, above (inluding dump-script), then
+             have already dealt with, above (including dump-script), then
              report an error. Otherwise, targets might begin to believe
              they are allowed to use options in the LTWRAPPER_OPTION_PREFIX
              namespace. The first time any user complains about this, we'll

build-aux/missing

@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 # Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify

build-aux/snippet/_Noreturn.h

@@ -1,10 +0,0 @@
-#if !defined _Noreturn && __STDC_VERSION__ < 201112
-# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
-      || 0x5110 <= __SUNPRO_C)
-#  define _Noreturn __attribute__ ((__noreturn__))
-# elif 1200 <= _MSC_VER
-#  define _Noreturn __declspec (noreturn)
-# else
-#  define _Noreturn
-# endif
-#endif

build-aux/snippet/warn-on-use.h

@@ -1,109 +0,0 @@
-/* A C macro for emitting warnings if a function is used.
-   Copyright (C) 2010-2013 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
-   for FUNCTION which will then trigger a compiler warning containing
-   the text of "literal string" anywhere that function is called, if
-   supported by the compiler.  If the compiler does not support this
-   feature, the macro expands to an unused extern declaration.
-
-   This macro is useful for marking a function as a potential
-   portability trap, with the intent that "literal string" include
-   instructions on the replacement function that should be used
-   instead.  However, one of the reasons that a function is a
-   portability trap is if it has the wrong signature.  Declaring
-   FUNCTION with a different signature in C is a compilation error, so
-   this macro must use the same type as any existing declaration so
-   that programs that avoid the problematic FUNCTION do not fail to
-   compile merely because they included a header that poisoned the
-   function.  But this implies that _GL_WARN_ON_USE is only safe to
-   use if FUNCTION is known to already have a declaration.  Use of
-   this macro implies that there must not be any other macro hiding
-   the declaration of FUNCTION; but undefining FUNCTION first is part
-   of the poisoning process anyway (although for symbols that are
-   provided only via a macro, the result is a compilation error rather
-   than a warning containing "literal string").  Also note that in
-   C++, it is only safe to use if FUNCTION has no overloads.
-
-   For an example, it is possible to poison 'getline' by:
-   - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
-     [getline]) in configure.ac, which potentially defines
-     HAVE_RAW_DECL_GETLINE
-   - adding this code to a header that wraps the system <stdio.h>:
-     #undef getline
-     #if HAVE_RAW_DECL_GETLINE
-     _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
-       "not universally present; use the gnulib module getline");
-     #endif
-
-   It is not possible to directly poison global variables.  But it is
-   possible to write a wrapper accessor function, and poison that
-   (less common usage, like &environ, will cause a compilation error
-   rather than issue the nice warning, but the end result of informing
-   the developer about their portability problem is still achieved):
-   #if HAVE_RAW_DECL_ENVIRON
-   static char ***rpl_environ (void) { return &environ; }
-   _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
-   # undef environ
-   # define environ (*rpl_environ ())
-   #endif
-   */
-#ifndef _GL_WARN_ON_USE
-
-# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
-/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
-#  define _GL_WARN_ON_USE(function, message) \
-extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
-# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
-/* Verify the existence of the function.  */
-#  define _GL_WARN_ON_USE(function, message) \
-extern __typeof__ (function) function
-# else /* Unsupported.  */
-#  define _GL_WARN_ON_USE(function, message) \
-_GL_WARN_EXTERN_C int _gl_warn_on_use
-# endif
-#endif
-
-/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string")
-   is like _GL_WARN_ON_USE (function, "string"), except that the function is
-   declared with the given prototype, consisting of return type, parameters,
-   and attributes.
-   This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
-   not work in this case.  */
-#ifndef _GL_WARN_ON_USE_CXX
-# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-extern rettype function parameters_and_attributes \
-     __attribute__ ((__warning__ (msg)))
-# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
-/* Verify the existence of the function.  */
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-extern rettype function parameters_and_attributes
-# else /* Unsupported.  */
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-_GL_WARN_EXTERN_C int _gl_warn_on_use
-# endif
-#endif
-
-/* _GL_WARN_EXTERN_C declaration;
-   performs the declaration with C linkage.  */
-#ifndef _GL_WARN_EXTERN_C
-# if defined __cplusplus
-#  define _GL_WARN_EXTERN_C extern "C"
-# else
-#  define _GL_WARN_EXTERN_C extern
-# endif
-#endif

build-aux/test-driver

@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2020 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -105,11 +105,8 @@ trap "st=130; $do_exit" 2
 trap "st=141; $do_exit" 13
 trap "st=143; $do_exit" 15
 
-# Test script is run here. We create the file first, then append to it,
+# Test script is run here.
-# to ameliorate tests themselves also writing to the log file. Our tests
+"$@" >$log_file 2>&1
-# don't, but others can (automake bug#35762).
-: >"$log_file"
-"$@" >>"$log_file" 2>&1
 estatus=$?
 
 if test $enable_hard_errors = no && test $estatus -eq 99; then
@@ -131,7 +128,7 @@ esac
 # know whether the test passed or failed simply by looking at the '.log'
 # file, without the need of also peaking into the corresponding '.trs'
 # file (automake bug#11814).
-echo "$res $test_name (exit status: $estatus)" >>"$log_file"
+echo "$res $test_name (exit status: $estatus)" >>$log_file
 
 # Report outcome to console.
 echo "${col}${res}${std}: $test_name"

config_test/child_test.c

@@ -30,7 +30,7 @@ int main(){
             /* pipefd[1] is for writing to the pipe. We want the output
              * that used to go to the standard output (file descriptor 1)
              * to be written to the pipe. The following command does this,
-             * creating a new file descripter 1 (the lowest available) 
+             * creating a new file descriptor 1 (the lowest available) 
              * that writes where pipefd[1] goes. */
             dup (pipefd[1]); /* points pipefd at file descriptor */
             /* the child isn't going to read from the pipe, so

configure.ac

@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
-AC_INIT(monitoring-plugins,2.3.3)
+AC_INIT(monitoring-plugins,2.3.4)
 AC_CONFIG_SRCDIR(NPTest.pm)
 AC_CONFIG_FILES([gl/Makefile])
 AC_CONFIG_AUX_DIR(build-aux)
@@ -328,6 +328,25 @@ AS_IF([test "x$with_ldap" != "xno"], [
   LIBS="$_SAVEDLIBS"
 ])
 
+
+AC_ARG_WITH([systemd], [AS_HELP_STRING([--without-systemd], [Skips systemd support])])
+
+dnl Check for libsystemd
+AS_IF([test "x$with_systemd" != "xno"], [
+  _SAVEDLIBS="$LIBS"
+  AC_CHECK_LIB(systemd,sd_get_sessions,,,-lsystemd)
+  if test "$ac_cv_lib_systemd_sd_get_sessions" = "yes"; then
+    SYSTEMDLIBS="-lsystemd"
+    SYSTEMDINCLUDE=""
+    AC_SUBST(SYSTEMDLIBS)
+    AC_SUBST(SYSTEMDINCLUDE)
+  else
+    AC_MSG_WARN([Skipping systemd support])
+  fi
+  LIBS="$_SAVEDLIBS"
+])
+
+
 dnl Check for headers used by check_ide_smart
 case $host in
   *linux*)
@@ -602,7 +621,6 @@ AC_C_CONST
 AC_STRUCT_TM
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
-AC_TYPE_SIGNAL
 
 AC_CACHE_CHECK([for va_copy],ac_cv_HAVE_VA_COPY,[
 AC_TRY_LINK([#include <stdarg.h>
@@ -626,12 +644,16 @@ AC_TRY_COMPILE([#include <sys/time.h>],
                [struct timeval *tv;
                 struct timezone *tz;],
                AC_DEFINE(HAVE_STRUCT_TIMEVAL,1,[Define if we have a timeval structure])
+			   FOUND_STRUCT_TIMEVAL="yes")
+
+if test x"$FOUND_STRUCT_TIMEVAL" = x"yes"; then
 	AC_TRY_COMPILE([#include <sys/time.h>],
 			  [struct timeval *tv;
 			   struct timezone *tz;
 			   gettimeofday(tv, tz);],
 			  AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define if gettimeofday is found]),
-                              AC_DEFINE(NEED_GETTIMEOFDAY,1,[Define if gettimeofday is needed])))
+			  AC_DEFINE(NEED_GETTIMEOFDAY,1,[Define if gettimeofday is needed]))
+fi
 
 dnl Checks for library functions.
 AC_CHECK_FUNCS(memmove select socket strdup strstr strtol strtoul floor)
@@ -932,7 +954,7 @@ elif ps -Ao 's comm vsz rss uid user pid ppid args' 2>/dev/null | \
 then
 	ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
 	ac_cv_ps_command="$PATH_TO_PS -Ao 's uid pid ppid vsz rss pcpu comm args'"
-	# There must be no space between the %s and %n due to a wierd problem in sscanf where
+	# There must be no space between the %s and %n due to a weird problem in sscanf where
 	# it will return %n as longer than the line length
 	ac_cv_ps_format="%s %d %d %d %d %d %f %s%n"
 	ac_cv_ps_cols=9
@@ -1552,7 +1574,7 @@ if test -n "$PATH_TO_SUDO"
 then
 	AC_DEFINE_UNQUOTED(PATH_TO_SUDO,"$PATH_TO_SUDO",[path to sudo])
 else
-	AC_MSG_WARN([Could not find sudo or eqivalent])
+	AC_MSG_WARN([Could not find sudo or equivalent])
 fi
 
 AC_PATH_PROG(PATH_TO_MAILQ,mailq)
@@ -1563,7 +1585,7 @@ if test -n "$PATH_TO_MAILQ"
 then
 	AC_DEFINE_UNQUOTED(PATH_TO_MAILQ,"$PATH_TO_MAILQ",[path to mailq])
 else
-	AC_MSG_WARN([Could not find mailq or eqivalent])
+	AC_MSG_WARN([Could not find mailq or equivalent])
 fi
 
 AC_PATH_PROG(PATH_TO_QMAIL_QSTAT,qmail-qstat)
@@ -1574,7 +1596,7 @@ if test -n "$PATH_TO_QMAIL_QSTAT"
 then
 	AC_DEFINE_UNQUOTED(PATH_TO_QMAIL_QSTAT,"$PATH_TO_QMAIL_QSTAT",[path to qmail-qstat])
 else
-	AC_MSG_WARN([Could not find qmail-qstat or eqivalent])
+	AC_MSG_WARN([Could not find qmail-qstat or equivalent])
 fi
 
 dnl SWAP info required is amount allocated/available and amount free
@@ -1592,13 +1614,13 @@ then
 		grep -E -i "^lswap +path +pri +swaplo +blocks +free +maxswap" \
 		>/dev/null]
 	then
-		ac_cv_swap_format=[" %*d %*s %*d,%*d %*d %*d %f %f"]
+		ac_cv_swap_format=[" %*d %*s %*d,%*d %*d %*d %lu %lu"]
 		ac_cv_swap_conv=2048
 		AC_MSG_RESULT([using IRIX format swap])
 
 	elif [$PATH_TO_SWAP -l 2>/dev/null | grep -E -i "^path +dev +swaplo +blocks +free" >/dev/null]
 	then
-		ac_cv_swap_format=["%*s %*[0-9,-] %*d %f %f"]
+		ac_cv_swap_format=["%*s %*[0-9,-] %*d %lu %lu"]
 		ac_cv_swap_conv=2048
 		AC_MSG_RESULT([using Unixware format swap])
 	else
@@ -1622,7 +1644,7 @@ then
 
 	if [$PATH_TO_SWAPINFO -k 2>/dev/null | grep -E -i "^Device +1K-blocks +Used +Avail" >/dev/null]
 	then
-		ac_cv_swap_format=["%*s %f %*d %f"]
+		ac_cv_swap_format=["%*s %lu %*d %lu"]
 		ac_cv_swap_conv=1024
 		AC_MSG_RESULT([using FreeBSD format swapinfo])
 	fi
@@ -1631,7 +1653,7 @@ elif [$PATH_TO_SWAPINFO -dfM 2>/dev/null | grep -E -i "^TYPE +AVAIL +USED +FREE"
 then
 	ac_cv_have_swap=yes
 	ac_cv_swap_command="$PATH_TO_SWAPINFO -dfM"
-	ac_cv_swap_format=["%*s %f %*d %f"]
+	ac_cv_swap_format=["%*s %lu %*d %lu"]
 	ac_cv_swap_conv=1024
 	AC_MSG_RESULT([using HP-UX format swapinfo])
 fi
@@ -1646,7 +1668,7 @@ if [$PATH_TO_LSPS -a 2>/dev/null | grep -E -i "^Page Space" > /dev/null]
 then
 	ac_cv_have_swap=yes
 	ac_cv_swap_command="$PATH_TO_LSPS -a"
-	ac_cv_swap_format=["%*s %*s %*s %f%*s %f %*s"]
+	ac_cv_swap_format=["%*s %*s %*s %lu%*s %lu %*s"]
 	ac_cv_swap_conv=1
 	AC_MSG_RESULT([using AIX lsps])
 fi
@@ -1832,7 +1854,7 @@ AM_GNU_GETTEXT([external], [need-ngettext])
 AM_GNU_GETTEXT_VERSION(0.15)
 
 dnl Check for Redhat spopen problem
-dnl Wierd problem where ECHILD is returned from a wait call in error
+dnl Weird problem where ECHILD is returned from a wait call in error
 dnl Only appears to affect nslookup and dig calls. Only affects redhat around
 dnl 2.6.9-11 (okay in 2.6.9-5). Redhat investigating root cause
 dnl We patch plugins/popen.c

gl/_Noreturn.h

@@ -0,0 +1,50 @@
+/* A C macro for declaring that a function does not return.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _Noreturn
+# if (defined __cplusplus \
+      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+      && 0)
+    /* [[noreturn]] is not practically usable, because with it the syntax
+         extern _Noreturn void func (...);
+       would not be valid; such a declaration would only be valid with 'extern'
+       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
+       AIX system header files and several gnulib header files use precisely
+       this syntax with 'extern'.  */
+#  define _Noreturn [[noreturn]]
+# elif (defined __clang__ && __clang_major__ < 16 \
+        && defined _GL_WORK_AROUND_LLVM_BUG_59792)
+   /* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around
+      that rare LLVM bug, though you may get many false-alarm warnings.  */
+#  define _Noreturn
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+   /* _Noreturn works as-is.  */
+# elif (2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ \
+        || 0x5110 <= __SUNPRO_C)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn
+# endif
+#endif

gl/af_alg.c

@@ -0,0 +1,213 @@
+/* af_alg.c - Compute message digests from file streams and buffers.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Matteo Croce <mcroce@redhat.com>, 2018.  */
+
+#include <config.h>
+
+#include "af_alg.h"
+
+#if USE_LINUX_CRYPTO_API
+
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <linux/if_alg.h>
+#include <sys/stat.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+
+#include "sys-limits.h"
+
+#define BLOCKSIZE 32768
+
+/* Return a newly created socket for ALG.
+   On error, return a negative error number.  */
+static int
+alg_socket (char const *alg)
+{
+  struct sockaddr_alg salg = {
+    .salg_family = AF_ALG,
+    .salg_type = "hash",
+  };
+  /* Copy alg into salg.salg_name, without calling strcpy nor strlen.  */
+  for (size_t i = 0; (salg.salg_name[i] = alg[i]) != '\0'; i++)
+    if (i == sizeof salg.salg_name - 1)
+      /* alg is too long.  */
+      return -EINVAL;
+
+  int cfd = socket (AF_ALG, SOCK_SEQPACKET | SOCK_CLOEXEC, 0);
+  if (cfd < 0)
+    return -EAFNOSUPPORT;
+  int ofd = (bind (cfd, (struct sockaddr *) &salg, sizeof salg) == 0
+             ? accept4 (cfd, NULL, 0, SOCK_CLOEXEC)
+             : -1);
+  close (cfd);
+  return ofd < 0 ? -EAFNOSUPPORT : ofd;
+}
+
+int
+afalg_buffer (const char *buffer, size_t len, const char *alg,
+              void *resblock, ssize_t hashlen)
+{
+  /* On Linux < 4.9, the value for an empty stream is wrong (all zeroes).
+     See <https://patchwork.kernel.org/patch/9308641/>.
+     This was not fixed properly until November 2016,
+     see <https://patchwork.kernel.org/patch/9434741/>.  */
+  if (len == 0)
+    return -EAFNOSUPPORT;
+
+  int ofd = alg_socket (alg);
+  if (ofd < 0)
+    return ofd;
+
+  int result;
+
+  for (;;)
+    {
+      ssize_t size = (len > BLOCKSIZE ? BLOCKSIZE : len);
+      if (send (ofd, buffer, size, MSG_MORE) != size)
+        {
+          result = -EAFNOSUPPORT;
+          break;
+        }
+      buffer += size;
+      len -= size;
+      if (len == 0)
+        {
+          result = read (ofd, resblock, hashlen) == hashlen ? 0 : -EAFNOSUPPORT;
+          break;
+        }
+    }
+
+  close (ofd);
+  return result;
+}
+
+int
+afalg_stream (FILE *stream, const char *alg,
+              void *resblock, ssize_t hashlen)
+{
+  int ofd = alg_socket (alg);
+  if (ofd < 0)
+    return ofd;
+
+  /* If STREAM's size is known and nonzero and not too large, attempt
+     sendfile to pipe the data.  The nonzero restriction avoids issues
+     with /proc files that pretend to be empty, and lets the classic
+     read-write loop work around an empty-input bug noted below.  */
+  int fd = fileno (stream);
+  int result;
+  struct stat st;
+  off_t off = ftello (stream);
+  if (0 <= off && fstat (fd, &st) == 0
+      && (S_ISREG (st.st_mode) || S_TYPEISSHM (&st) || S_TYPEISTMO (&st))
+      && off < st.st_size && st.st_size - off < SYS_BUFSIZE_MAX)
+    {
+      /* Make sure the offset of fileno (stream) reflects how many bytes
+         have been read from stream before this function got invoked.
+         Note: fflush on an input stream after ungetc does not work as expected
+         on some platforms.  Therefore this situation is not supported here.  */
+      if (fflush (stream))
+        result = -EIO;
+      else
+        {
+          off_t nbytes = st.st_size - off;
+          if (sendfile (ofd, fd, &off, nbytes) == nbytes)
+            {
+              if (read (ofd, resblock, hashlen) == hashlen)
+                {
+                  /* The input buffers of stream are no longer valid.  */
+                  if (lseek (fd, off, SEEK_SET) != (off_t)-1)
+                    result = 0;
+                  else
+                    /* The file position of fd has not changed.  */
+                    result = -EAFNOSUPPORT;
+                }
+              else
+                /* The file position of fd has not changed.  */
+                result = -EAFNOSUPPORT;
+            }
+          else
+            /* The file position of fd has not changed.  */
+            result = -EAFNOSUPPORT;
+       }
+    }
+  else
+    {
+      /* sendfile not possible, do a classic read-write loop.  */
+
+      /* Number of bytes to seek (backwards) in case of error.  */
+      off_t nseek = 0;
+
+      for (;;)
+        {
+          char buf[BLOCKSIZE];
+          /* When the stream is not seekable, start with a single-byte block,
+             so that we can use ungetc() in the case that send() fails.  */
+          size_t blocksize = (nseek == 0 && off < 0 ? 1 : BLOCKSIZE);
+          ssize_t size = fread (buf, 1, blocksize, stream);
+          if (size == 0)
+            {
+              /* On Linux < 4.9, the value for an empty stream is wrong (all 0).
+                 See <https://patchwork.kernel.org/patch/9308641/>.
+                 This was not fixed properly until November 2016,
+                 see <https://patchwork.kernel.org/patch/9434741/>.  */
+              result = ferror (stream) ? -EIO : nseek == 0 ? -EAFNOSUPPORT : 0;
+              break;
+            }
+          nseek -= size;
+          if (send (ofd, buf, size, MSG_MORE) != size)
+            {
+              if (nseek == -1)
+                {
+                  /* 1 byte of pushback buffer is guaranteed on stream, even
+                     if stream is not seekable.  */
+                  ungetc ((unsigned char) buf[0], stream);
+                  result = -EAFNOSUPPORT;
+                }
+              else if (fseeko (stream, nseek, SEEK_CUR) == 0)
+                /* The position of stream has been restored.  */
+                result = -EAFNOSUPPORT;
+              else
+                result = -EIO;
+              break;
+            }
+
+          /* Don't assume that EOF is sticky. See:
+             <https://sourceware.org/bugzilla/show_bug.cgi?id=19476>.  */
+          if (feof (stream))
+            {
+              result = 0;
+              break;
+            }
+        }
+
+      if (result == 0 && read (ofd, resblock, hashlen) != hashlen)
+        {
+          if (nseek == 0 || fseeko (stream, nseek, SEEK_CUR) == 0)
+            /* The position of stream has been restored.  */
+            result = -EAFNOSUPPORT;
+          else
+            result = -EIO;
+        }
+    }
+  close (ofd);
+  return result;
+}
+
+#endif

gl/af_alg.h

@@ -0,0 +1,115 @@
+/* af_alg.h - Compute message digests from file streams and buffers.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Matteo Croce <mcroce@redhat.com>, 2018.
+   Documentation by Bruno Haible <bruno@clisp.org>, 2018.  */
+
+/* Declare specific functions for computing message digests
+   using the Linux kernel crypto API, if available.  This kernel API gives
+   access to specialized crypto instructions (that would also be available
+   in user space) or to crypto devices (not directly available in user space).
+
+   For a more complete set of facilities that use the Linux kernel crypto API,
+   look at libkcapi.  */
+
+#ifndef AF_ALG_H
+# define AF_ALG_H 1
+
+# include <stdio.h>
+# include <errno.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if USE_LINUX_CRYPTO_API
+
+/* Compute a message digest of a memory region.
+
+   The memory region starts at BUFFER and is LEN bytes long.
+
+   ALG is the message digest algorithm; see the file /proc/crypto.
+
+   RESBLOCK points to a block of HASHLEN bytes, for the result.
+   HASHLEN must be the length of the message digest, in bytes, in particular:
+
+      alg    | hashlen
+      -------+--------
+      md5    | 16
+      sha1   | 20
+      sha224 | 28
+      sha256 | 32
+      sha384 | 48
+      sha512 | 64
+
+   If successful, fill RESBLOCK and return 0.
+   Upon failure, return a negated error number.  */
+int
+afalg_buffer (const char *buffer, size_t len, const char *alg,
+              void *resblock, ssize_t hashlen);
+
+/* Compute a message digest of data read from STREAM.
+
+   STREAM is an open file stream.  The last operation on STREAM should
+   not be 'ungetc', and if STREAM is also open for writing it should
+   have been fflushed since its last write.  Read from the current
+   position to the end of STREAM.  Handle regular files efficiently.
+
+   ALG is the message digest algorithm; see the file /proc/crypto.
+
+   RESBLOCK points to a block of HASHLEN bytes, for the result.
+   HASHLEN must be the length of the message digest, in bytes, in particular:
+
+      alg    | hashlen
+      -------+--------
+      md5    | 16
+      sha1   | 20
+      sha224 | 28
+      sha256 | 32
+      sha384 | 48
+      sha512 | 64
+
+   If successful, fill RESBLOCK and return 0.
+   Upon failure, return a negated error number.
+   Unless returning 0 or -EIO, restore STREAM's file position so that
+   the caller can fall back on some other method.  */
+int
+afalg_stream (FILE *stream, const char *alg,
+              void *resblock, ssize_t hashlen);
+
+# else
+
+static inline int
+afalg_buffer (const char *buffer, size_t len, const char *alg,
+              void *resblock, ssize_t hashlen)
+{
+  return -EAFNOSUPPORT;
+}
+
+static inline int
+afalg_stream (FILE *stream, const char *alg,
+              void *resblock, ssize_t hashlen)
+{
+  return -EAFNOSUPPORT;
+}
+
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif /* AF_ALG_H */

gl/alloca.in.h

@@ -1,22 +1,20 @@
 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001-2004, 2006-2013 Free Software Foundation,
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2023 Free Software Foundation,
    Inc.
 
-   This program is free software; you can redistribute it and/or modify it
+   This file is free software: you can redistribute it and/or modify
-   under the terms of the GNU General Public License as published
+   it under the terms of the GNU Lesser General Public License as
-   by the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public
+   You should have received a copy of the GNU Lesser General Public License
-   License along with this program; if not, see
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-   <http://www.gnu.org/licenses/>.
-  */
 
 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
    means there is a real alloca function.  */
@@ -35,7 +33,16 @@
  */
 
 #ifndef alloca
-# ifdef __GNUC__
+  /* Some version of mingw have an <alloca.h> that causes trouble when
+     included after 'alloca' gets defined as a macro.  As a workaround,
+     include this <alloca.h> first and define 'alloca' as a macro afterwards
+     if needed.  */
+# if defined __GNUC__ && (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@
+#  include_next <alloca.h>
+# endif
+#endif
+#ifndef alloca
+# if defined __GNUC__ || (__clang_major__ >= 4)
 #  define alloca __builtin_alloca
 # elif defined _AIX
 #  define alloca __alloca
@@ -51,6 +58,8 @@ extern "C"
 void *_alloca (unsigned short);
 #  pragma intrinsic (_alloca)
 #  define alloca _alloca
+# elif defined __MVS__
+#  include <stdlib.h>
 # else
 #  include <stddef.h>
 #  ifdef  __cplusplus

gl/arg-nonnull.h

@@ -1,24 +1,24 @@
 /* A C macro for declaring that specific arguments must not be NULL.
-   Copyright (C) 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
+   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
    that the values passed as arguments n, ..., m must be non-NULL pointers.
    n = 1 stands for the first argument, n = 2 for the second argument etc.  */
 #ifndef _GL_ARG_NONNULL
-# if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
 #  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
 # else
 #  define _GL_ARG_NONNULL(params)

gl/arpa_inet.in.h

@@ -1,19 +1,19 @@
 /* A GNU-like <arpa/inet.h>.
 
-   Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_ARPA_INET_H
 
@@ -49,6 +49,12 @@
 #ifndef _@GUARD_PREFIX@_ARPA_INET_H
 #define _@GUARD_PREFIX@_ARPA_INET_H
 
+/* Get all possible declarations of inet_ntop() and inet_pton().  */
+#if (@GNULIB_INET_NTOP@ || @GNULIB_INET_PTON@ || defined GNULIB_POSIXCHECK) \
+    && @HAVE_WS2TCPIP_H@
+# include <ws2tcpip.h>
+#endif
+
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
@@ -70,8 +76,8 @@
    the return value is NULL and errno is set to ENOSPC.  A good value
    for CNT is 46.
 
-   For more details, see the POSIX:2001 specification
+   For more details, see the POSIX:2008 specification
-   <http://www.opengroup.org/susv3xsh/inet_ntop.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/inet_ntop.html>.  */
 # if @REPLACE_INET_NTOP@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef inet_ntop
@@ -97,7 +103,9 @@ _GL_CXXALIAS_SYS_CAST (inet_ntop, const char *,
                        (int af, const void *restrict src,
                         char *restrict dst, socklen_t cnt));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (inet_ntop);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef inet_ntop
 # if HAVE_RAW_DECL_INET_NTOP
@@ -126,7 +134,9 @@ _GL_FUNCDECL_SYS (inet_pton, int,
 _GL_CXXALIAS_SYS (inet_pton, int,
                   (int af, const char *restrict src, void *restrict dst));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (inet_pton);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef inet_pton
 # if HAVE_RAW_DECL_INET_PTON

gl/asnprintf.c

@@ -1,18 +1,18 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
+   You should have received a copy of the GNU Lesser General Public License
-   with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/asprintf.c

@@ -1,19 +1,19 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2013 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
+   You should have received a copy of the GNU Lesser General Public License
-   with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/assert.in.h

@@ -0,0 +1,27 @@
+/* Substitute for and wrapper around <assert.h>
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Do not guard the include, since <assert.h> is supposed to define
+   the assert macro each time it is included.  */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#@INCLUDE_NEXT@ @NEXT_ASSERT_H@
+
+/* The definition of static_assert is copied here.  */

gl/attribute.h

@@ -0,0 +1,226 @@
+/* ATTRIBUTE_* macros for using attributes in GCC and similar compilers
+
+   Copyright 2020-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Provide public ATTRIBUTE_* names for the private _GL_ATTRIBUTE_*
+   macros used within Gnulib.  */
+
+/* These attributes can be placed in two ways:
+     - At the start of a declaration (i.e. even before storage-class
+       specifiers!); then they apply to all entities that are declared
+       by the declaration.
+     - Immediately after the name of an entity being declared by the
+       declaration; then they apply to that entity only.  */
+
+#ifndef _GL_ATTRIBUTE_H
+#define _GL_ATTRIBUTE_H
+
+
+/* This file defines two types of attributes:
+   * C23 standard attributes.  These have macro names that do not begin with
+     'ATTRIBUTE_'.
+   * Selected GCC attributes; see:
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html
+     These names begin with 'ATTRIBUTE_' to avoid name clashes.  */
+
+
+/* =============== Attributes for specific kinds of functions =============== */
+
+/* Attributes for functions that should not be used.  */
+
+/* Warn if the entity is used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: namespace, class, template specialization.  */
+#define DEPRECATED _GL_ATTRIBUTE_DEPRECATED
+
+/* If a function call is not optimized way, warn with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_WARNING(msg) _GL_ATTRIBUTE_WARNING (msg)
+
+/* If a function call is not optimized way, report an error with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_ERROR(msg) _GL_ATTRIBUTE_ERROR (msg)
+
+
+/* Attributes for memory-allocating functions.  */
+
+/* The function returns a pointer to freshly allocated memory.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_MALLOC _GL_ATTRIBUTE_MALLOC
+
+/* ATTRIBUTE_ALLOC_SIZE ((N)) - The Nth argument of the function
+   is the size of the returned memory block.
+   ATTRIBUTE_ALLOC_SIZE ((M, N)) - Multiply the Mth and Nth arguments
+   to determine the size of the returned memory block.  */
+/* Applies to: function, pointer to function, function types.  */
+#define ATTRIBUTE_ALLOC_SIZE(args) _GL_ATTRIBUTE_ALLOC_SIZE (args)
+
+/* ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
+   that can be freed by passing them as the Ith argument to the
+   function F.
+   ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
+   can be freed via 'free'; it can be used only after declaring 'free'.  */
+/* Applies to: functions.  Cannot be used on inline functions.  */
+#define ATTRIBUTE_DEALLOC(f, i) _GL_ATTRIBUTE_DEALLOC(f, i)
+#define ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC_FREE
+
+/* Attributes for variadic functions.  */
+
+/* The variadic function expects a trailing NULL argument.
+   ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
+   ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_SENTINEL(pos) _GL_ATTRIBUTE_SENTINEL (pos)
+
+
+/* ================== Attributes for compiler diagnostics ================== */
+
+/* Attributes that help the compiler diagnose programmer mistakes.
+   Some of them may also help for some compiler optimizations.  */
+
+/* ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) -
+   The STRING-INDEXth function argument is a format string of style
+   ARCHETYPE, which is one of:
+     printf, gnu_printf
+     scanf, gnu_scanf,
+     strftime, gnu_strftime,
+     strfmon,
+   or the same thing prefixed and suffixed with '__'.
+   If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
+   are suitable for the format string.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_FORMAT(spec) _GL_ATTRIBUTE_FORMAT (spec)
+
+/* ATTRIBUTE_NONNULL ((N1, N2,...)) - Arguments N1, N2,... must not be NULL.
+   ATTRIBUTE_NONNULL () - All pointer arguments must not be null.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NONNULL(args) _GL_ATTRIBUTE_NONNULL (args)
+
+/* The function's return value is a non-NULL pointer.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_RETURNS_NONNULL _GL_ATTRIBUTE_RETURNS_NONNULL
+
+/* Warn if the caller does not use the return value,
+   unless the caller uses something like ignore_value.  */
+/* Applies to: function, enumeration, class.  */
+#define NODISCARD _GL_ATTRIBUTE_NODISCARD
+
+
+/* Attributes that disable false alarms when the compiler diagnoses
+   programmer "mistakes".  */
+
+/* Do not warn if the entity is not used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: class.  */
+#define MAYBE_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+
+/* The contents of a character array is not meant to be NUL-terminated.  */
+/* Applies to: struct/union members and variables that are arrays of element
+   type '[[un]signed] char'.  */
+#define ATTRIBUTE_NONSTRING _GL_ATTRIBUTE_NONSTRING
+
+/* Do not warn if control flow falls through to the immediately
+   following 'case' or 'default' label.  */
+/* Applies to: Empty statement (;), inside a 'switch' statement.  */
+#define FALLTHROUGH _GL_ATTRIBUTE_FALLTHROUGH
+
+
+/* ================== Attributes for debugging information ================== */
+
+/* Attributes regarding debugging information emitted by the compiler.  */
+
+/* Omit the function from stack traces when debugging.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ARTIFICIAL _GL_ATTRIBUTE_ARTIFICIAL
+
+/* Make the entity visible to debuggers etc., even with '-fwhole-program'.  */
+/* Applies to: functions, variables.  */
+#define ATTRIBUTE_EXTERNALLY_VISIBLE _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+
+
+/* ========== Attributes that mainly direct compiler optimizations ========== */
+
+/* The function does not throw exceptions.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOTHROW _GL_ATTRIBUTE_NOTHROW
+
+/* Do not inline the function.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOINLINE _GL_ATTRIBUTE_NOINLINE
+
+/* Always inline the function, and report an error if the compiler
+   cannot inline.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_ALWAYS_INLINE
+
+/* It is OK for a compiler to omit duplicate calls with the same arguments.
+   This attribute is safe for a function that neither depends on
+   nor affects observable state, and always returns exactly once -
+   e.g., does not loop forever, and does not call longjmp.
+   (This attribute is stricter than ATTRIBUTE_PURE.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
+
+/* It is OK for a compiler to omit duplicate calls with the same
+   arguments if observable state is not changed between calls.
+   This attribute is safe for a function that does not affect
+   observable state, and always returns exactly once.
+   (This attribute is looser than ATTRIBUTE_CONST.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_PURE _GL_ATTRIBUTE_PURE
+
+/* The function is rarely executed.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_COLD _GL_ATTRIBUTE_COLD
+
+/* If called from some other compilation unit, the function executes
+   code from that unit only by return or by exception handling,
+   letting the compiler optimize that unit more aggressively.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_LEAF _GL_ATTRIBUTE_LEAF
+
+/* For struct members: The member has the smallest possible alignment.
+   For struct, union, class: All members have the smallest possible alignment,
+   minimizing the memory required.  */
+/* Applies to: struct members, struct, union,
+   in C++ also: class.  */
+#define ATTRIBUTE_PACKED _GL_ATTRIBUTE_PACKED
+
+
+/* ================ Attributes that make invalid code valid ================ */
+
+/* Attributes that prevent fatal compiler optimizations for code that is not
+   fully ISO C compliant.  */
+
+/* Pointers to the type may point to the same storage as pointers to
+   other types, thus disabling strict aliasing optimization.  */
+/* Applies to: types.  */
+#define ATTRIBUTE_MAY_ALIAS _GL_ATTRIBUTE_MAY_ALIAS
+
+
+#endif /* _GL_ATTRIBUTE_H */

gl/base64.c

@@ -1,24 +1,24 @@
 /* base64.c -- Encode binary data using printable characters.
-   Copyright (C) 1999-2001, 2004-2006, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Simon Josefsson.  Partially adapted from GNU MailUtils
  * (mailbox/filter_trans.c, as of 2004-11-28).  Improved by review
  * from Paul Eggert, Bruno Haible, and Stepan Kasal.
  *
- * See also RFC 4648 <http://www.ietf.org/rfc/rfc4648.txt>.
+ * See also RFC 4648 <https://www.ietf.org/rfc/rfc4648.txt>.
  *
  * Be careful with error checking.  Here is how you would typically
  * use these functions:
@@ -30,7 +30,7 @@
  *   FAIL: memory allocation error
  * OK: data in OUT/OUTLEN
  *
- * size_t outlen = base64_encode_alloc (in, inlen, &out);
+ * idx_t outlen = base64_encode_alloc (in, inlen, &out);
  * if (out == NULL && outlen == 0 && inlen != 0)
  *   FAIL: input too long
  * if (out == NULL)
@@ -44,51 +44,84 @@
 /* Get prototype. */
 #include "base64.h"
 
-/* Get malloc. */
+/* Get imalloc. */
-#include <stdlib.h>
+#include <ialloc.h>
+
+#include <intprops.h>
 
 /* Get UCHAR_MAX. */
 #include <limits.h>
 
 #include <string.h>
 
-/* C89 compliant way to cast 'char' to 'unsigned char'. */
+/* Convert 'char' to 'unsigned char' without casting.  */
 static unsigned char
 to_uchar (char ch)
 {
   return ch;
 }
 
+static const char b64c[64] =
+  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/* Base64 encode IN array of size INLEN into OUT array. OUT needs
+   to be of length >= BASE64_LENGTH(INLEN), and INLEN needs to be
+   a multiple of 3.  */
+static void
+base64_encode_fast (const char *restrict in, idx_t inlen, char *restrict out)
+{
+  while (inlen)
+    {
+      *out++ = b64c[(to_uchar (in[0]) >> 2) & 0x3f];
+      *out++ = b64c[((to_uchar (in[0]) << 4) + (to_uchar (in[1]) >> 4)) & 0x3f];
+      *out++ = b64c[((to_uchar (in[1]) << 2) + (to_uchar (in[2]) >> 6)) & 0x3f];
+      *out++ = b64c[to_uchar (in[2]) & 0x3f];
+
+      inlen -= 3;
+      in += 3;
+    }
+}
+
 /* Base64 encode IN array of size INLEN into OUT array of size OUTLEN.
    If OUTLEN is less than BASE64_LENGTH(INLEN), write as many bytes as
    possible.  If OUTLEN is larger than BASE64_LENGTH(INLEN), also zero
    terminate the output buffer. */
 void
-base64_encode (const char *restrict in, size_t inlen,
+base64_encode (const char *restrict in, idx_t inlen,
-               char *restrict out, size_t outlen)
+               char *restrict out, idx_t outlen)
 {
-  static const char b64str[64] =
+  /* Note this outlen constraint can be enforced at compile time.
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+     I.E. that the output buffer is exactly large enough to hold
+     the encoded inlen bytes.  The inlen constraints (of corresponding
+     to outlen, and being a multiple of 3) can change at runtime
+     at the end of input.  However the common case when reading
+     large inputs is to have both constraints satisfied, so we depend
+     on both in base_encode_fast().  */
+  if (outlen % 4 == 0 && inlen == (outlen >> 2) * 3)
+    {
+      base64_encode_fast (in, inlen, out);
+      return;
+    }
 
   while (inlen && outlen)
     {
-      *out++ = b64str[(to_uchar (in[0]) >> 2) & 0x3f];
+      *out++ = b64c[(to_uchar (in[0]) >> 2) & 0x3f];
       if (!--outlen)
         break;
-      *out++ = b64str[((to_uchar (in[0]) << 4)
+      *out++ = b64c[((to_uchar (in[0]) << 4)
                        + (--inlen ? to_uchar (in[1]) >> 4 : 0))
                       & 0x3f];
       if (!--outlen)
         break;
       *out++ =
         (inlen
-         ? b64str[((to_uchar (in[1]) << 2)
+         ? b64c[((to_uchar (in[1]) << 2)
                    + (--inlen ? to_uchar (in[2]) >> 6 : 0))
                   & 0x3f]
          : '=');
       if (!--outlen)
         break;
-      *out++ = inlen ? b64str[to_uchar (in[2]) & 0x3f] : '=';
+      *out++ = inlen ? b64c[to_uchar (in[2]) & 0x3f] : '=';
       if (!--outlen)
         break;
       if (inlen)
@@ -110,30 +143,21 @@ base64_encode (const char *restrict in, size_t inlen,
    memory allocation failed, OUT is set to NULL, and the return value
    indicates length of the requested memory block, i.e.,
    BASE64_LENGTH(inlen) + 1. */
-size_t
+idx_t
-base64_encode_alloc (const char *in, size_t inlen, char **out)
+base64_encode_alloc (const char *in, idx_t inlen, char **out)
 {
-  size_t outlen = 1 + BASE64_LENGTH (inlen);
-
   /* Check for overflow in outlen computation.
-   *
+     Treat negative INLEN as overflow, for better compatibility with
-   * If there is no overflow, outlen >= inlen.
+     pre-2021-08-27 API, which used size_t.  */
-   *
+  idx_t in_over_3 = inlen / 3 + (inlen % 3 != 0), outlen;
-   * If the operation (inlen + 2) overflows then it yields at most +1, so
+  if (! INT_MULTIPLY_OK (in_over_3, 4, &outlen) || inlen < 0)
-   * outlen is 0.
-   *
-   * If the multiplication overflows, we lose at least half of the
-   * correct value, so the result is < ((inlen + 2) / 3) * 2, which is
-   * less than (inlen + 2) * 0.66667, which is less than inlen as soon as
-   * (inlen > 4).
-   */
-  if (inlen > outlen)
     {
       *out = NULL;
       return 0;
     }
+  outlen++;
 
-  *out = malloc (outlen);
+  *out = imalloc (outlen);
   if (!*out)
     return outlen;
 
@@ -317,7 +341,7 @@ base64_decode_ctx_init (struct base64_decode_context *ctx)
 static char *
 get_4 (struct base64_decode_context *ctx,
        char const *restrict *in, char const *restrict in_end,
-       size_t *n_non_newline)
+       idx_t *n_non_newline)
 {
   if (ctx->i == 4)
     ctx->i = 0;
@@ -369,8 +393,8 @@ get_4 (struct base64_decode_context *ctx,
    *OUT to point to the byte after the last one written, and decrement
    *OUTLEN to reflect the number of bytes remaining in *OUT.  */
 static bool
-decode_4 (char const *restrict in, size_t inlen,
+decode_4 (char const *restrict in, idx_t inlen,
-          char *restrict *outp, size_t *outleft)
+          char *restrict *outp, idx_t *outleft)
 {
   char *out = *outp;
   if (inlen < 2)
@@ -455,10 +479,10 @@ decode_4 (char const *restrict in, size_t inlen,
 
 bool
 base64_decode_ctx (struct base64_decode_context *ctx,
-                   const char *restrict in, size_t inlen,
+                   const char *restrict in, idx_t inlen,
-                   char *restrict out, size_t *outlen)
+                   char *restrict out, idx_t *outlen)
 {
-  size_t outleft = *outlen;
+  idx_t outleft = *outlen;
   bool ignore_newlines = ctx != NULL;
   bool flush_ctx = false;
   unsigned int ctx_i = 0;
@@ -472,7 +496,7 @@ base64_decode_ctx (struct base64_decode_context *ctx,
 
   while (true)
     {
-      size_t outleft_save = outleft;
+      idx_t outleft_save = outleft;
       if (ctx_i == 0 && !flush_ctx)
         {
           while (true)
@@ -546,17 +570,17 @@ base64_decode_ctx (struct base64_decode_context *ctx,
    undefined. */
 bool
 base64_decode_alloc_ctx (struct base64_decode_context *ctx,
-                         const char *in, size_t inlen, char **out,
+                         const char *in, idx_t inlen, char **out,
-                         size_t *outlen)
+                         idx_t *outlen)
 {
   /* This may allocate a few bytes too many, depending on input,
      but it's not worth the extra CPU time to compute the exact size.
      The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the
      input ends with "=" and minus another 1 if the input ends with "==".
-     Dividing before multiplying avoids the possibility of overflow.  */
+     Shifting before multiplying avoids the possibility of overflow.  */
-  size_t needlen = 3 * (inlen / 4) + 3;
+  idx_t needlen = 3 * ((inlen >> 2) + 1);
 
-  *out = malloc (needlen);
+  *out = imalloc (needlen);
   if (!*out)
     return true;
 

gl/base64.h

@@ -1,28 +1,25 @@
 /* base64.h -- Encode binary data using printable characters.
-   Copyright (C) 2004-2006, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef BASE64_H
 # define BASE64_H
 
-/* Get size_t. */
+/* Get idx_t.  */
-# include <stddef.h>
+# include <idx.h>
-
-/* Get bool. */
-# include <stdbool.h>
 
 # ifdef __cplusplus
 extern "C" {
@@ -34,26 +31,26 @@ extern "C" {
 
 struct base64_decode_context
 {
-  unsigned int i;
+  int i;
   char buf[4];
 };
 
 extern bool isbase64 (char ch) _GL_ATTRIBUTE_CONST;
 
-extern void base64_encode (const char *restrict in, size_t inlen,
+extern void base64_encode (const char *restrict in, idx_t inlen,
-                           char *restrict out, size_t outlen);
+                           char *restrict out, idx_t outlen);
 
-extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
+extern idx_t base64_encode_alloc (const char *in, idx_t inlen, char **out);
 
 extern void base64_decode_ctx_init (struct base64_decode_context *ctx);
 
 extern bool base64_decode_ctx (struct base64_decode_context *ctx,
-                               const char *restrict in, size_t inlen,
+                               const char *restrict in, idx_t inlen,
-                               char *restrict out, size_t *outlen);
+                               char *restrict out, idx_t *outlen);
 
 extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx,
-                                     const char *in, size_t inlen,
+                                     const char *in, idx_t inlen,
-                                     char **out, size_t *outlen);
+                                     char **out, idx_t *outlen);
 
 #define base64_decode(in, inlen, out, outlen) \
         base64_decode_ctx (NULL, in, inlen, out, outlen)

gl/basename-lgpl.c

@@ -1,37 +1,36 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2013 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
-#include "dirname.h"
+/* Specification.  */
+#include "basename-lgpl.h"
 
 #include <string.h>
 
-/* Return the address of the last file name component of NAME.  If
+#include "filename.h"
-   NAME has no relative file name components because it is a file
-   system root, return the empty string.  */
 
 char *
 last_component (char const *name)
 {
   char const *base = name + FILE_SYSTEM_PREFIX_LEN (name);
   char const *p;
-  bool saw_slash = false;
+  bool last_was_slash = false;
 
   while (ISSLASH (*base))
     base++;
@@ -39,21 +38,17 @@ last_component (char const *name)
   for (p = base; *p; p++)
     {
       if (ISSLASH (*p))
-        saw_slash = true;
+        last_was_slash = true;
-      else if (saw_slash)
+      else if (last_was_slash)
         {
           base = p;
-          saw_slash = false;
+          last_was_slash = false;
         }
     }
 
   return (char *) base;
 }
 
-/* Return the length of the basename NAME.  Typically NAME is the
-   value returned by base_name or last_component.  Act like strlen
-   (NAME), except omit all trailing slashes.  */
-
 size_t
 base_len (char const *name)
 {

gl/basename-lgpl.h

@@ -0,0 +1,78 @@
+/* Extract the last component (base name) of a file name.
+
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BASENAME_LGPL_H
+#define _BASENAME_LGPL_H
+
+#include <stddef.h>
+
+#ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
+# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the address of the last file name component of FILENAME.
+   If FILENAME has some trailing slash(es), they are considered to be
+   part of the last component.
+   If FILENAME has no relative file name components because it is a file
+   system root, return the empty string.
+   Examples:
+              FILENAME      RESULT
+              "foo.c"       "foo.c"
+              "foo/bar.c"   "bar.c"
+              "/foo/bar.c"  "bar.c"
+              "foo/bar/"    "bar/"
+              "foo/bar//"   "bar//"
+              "/"           ""
+              "//"          ""
+              ""            ""
+   The return value is a tail of the given FILENAME; do NOT free() it!  */
+
+/* This function was traditionally called 'basename', but we avoid this
+   function name because
+     * Various platforms have different functions in their libc.
+       In particular, the glibc basename(), defined in <string.h>, does
+       not consider trailing slashes to be part of the component:
+              FILENAME      RESULT
+              "foo/bar/"    ""
+              "foo/bar//"   ""
+     * The 'basename' command eliminates trailing slashes and for a root
+       produces a non-empty result:
+              FILENAME      RESULT
+              "foo/bar/"    "bar"
+              "foo/bar//"   "bar"
+              "/"           "/"
+              "//"          "/"
+ */
+extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
+
+/* Return the length of the basename FILENAME.
+   Typically FILENAME is the value returned by base_name or last_component.
+   Act like strlen (FILENAME), except omit all trailing slashes.  */
+extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _BASENAME_LGPL_H */

gl/basename.c

@@ -1,11 +1,11 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2013 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,7 +14,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
@@ -22,37 +22,43 @@
 
 #include <string.h>
 #include "xalloc.h"
-#include "xstrndup.h"
 
 char *
 base_name (char const *name)
 {
   char const *base = last_component (name);
-  size_t length;
+  idx_t length;
-
+  int dotslash_len;
-  /* If there is no last component, then name is a file system root or the
+  if (*base)
-     empty string.  */
+    {
-  if (! *base)
+      length = base_len (base);
-    return xstrndup (name, base_len (name));
 
       /* Collapse a sequence of trailing slashes into one.  */
-  length = base_len (base);
+      length += ISSLASH (base[length]);
-  if (ISSLASH (base[length]))
-    length++;
 
       /* On systems with drive letters, "a/b:c" must return "./b:c" rather
          than "b:c" to avoid confusion with a drive letter.  On systems
          with pure POSIX semantics, this is not an issue.  */
-  if (FILE_SYSTEM_PREFIX_LEN (base))
+      dotslash_len = FILE_SYSTEM_PREFIX_LEN (base) != 0 ? 2 : 0;
+    }
+  else
+    {
+      /* There is no last component, so NAME is a file system root or
+         the empty string.  */
+      base = name;
+      length = base_len (base);
+      dotslash_len = 0;
+    }
+
+  char *p = ximalloc (dotslash_len + length + 1);
+  if (dotslash_len)
     {
-      char *p = xmalloc (length + 3);
       p[0] = '.';
       p[1] = '/';
-      memcpy (p + 2, base, length);
-      p[length + 2] = '\0';
-      return p;
     }
 
   /* Finally, copy the basename.  */
-  return xstrndup (base, length);
+  memcpy (p + dotslash_len, base, length);
+  p[dotslash_len + length] = '\0';
+  return p;
 }

gl/btowc.c

@@ -1,19 +1,19 @@
 /* Convert unibyte character to wide character.
-   Copyright (C) 2008, 2010-2013 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/byteswap.in.h

@@ -0,0 +1,44 @@
+/* byteswap.h - Byte swapping
+   Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
+   Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_BYTESWAP_H
+#define _GL_BYTESWAP_H
+
+/* Given an unsigned 16-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_16(x) ((((x) & 0x00FF) << 8) | \
+                     (((x) & 0xFF00) >> 8))
+
+/* Given an unsigned 32-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_32(x) ((((x) & 0x000000FF) << 24) | \
+                     (((x) & 0x0000FF00) << 8) | \
+                     (((x) & 0x00FF0000) >> 8) | \
+                     (((x) & 0xFF000000) >> 24))
+
+/* Given an unsigned 64-bit argument X, return the value corresponding to
+   X with reversed byte order.  */
+#define bswap_64(x) ((((x) & 0x00000000000000FFULL) << 56) | \
+                     (((x) & 0x000000000000FF00ULL) << 40) | \
+                     (((x) & 0x0000000000FF0000ULL) << 24) | \
+                     (((x) & 0x00000000FF000000ULL) << 8) | \
+                     (((x) & 0x000000FF00000000ULL) >> 8) | \
+                     (((x) & 0x0000FF0000000000ULL) >> 24) | \
+                     (((x) & 0x00FF000000000000ULL) >> 40) | \
+                     (((x) & 0xFF00000000000000ULL) >> 56))
+
+#endif /* _GL_BYTESWAP_H */

gl/c++defs.h

@@ -1,22 +1,31 @@
 /* C++ compatible function declaration macros.
-   Copyright (C) 2010-2013 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
+   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _GL_CXXDEFS_H
 #define _GL_CXXDEFS_H
 
+/* Begin/end the GNULIB_NAMESPACE namespace.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
 /* The three most frequent use cases of these macros are:
 
    * For providing a substitute for a function that is missing on some
@@ -111,14 +120,25 @@
    that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
    Example:
      _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
- */
+
+   Wrapping rpl_func in an object with an inline conversion operator
+   avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
 #define _GL_CXXALIAS_RPL(func,rettype,parameters) \
   _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
 #if defined __cplusplus && defined GNULIB_NAMESPACE
 # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
     namespace GNULIB_NAMESPACE                                \
     {                                                         \
-      rettype (*const func) parameters = ::rpl_func;          \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::rpl_func;                                  \
+        }                                                     \
+      } func = {};                                            \
     }                                                         \
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #else
@@ -126,6 +146,16 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
    is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
    except that the C function rpl_func may have a slightly different
@@ -135,8 +165,15 @@
 # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
     namespace GNULIB_NAMESPACE                                     \
     {                                                              \
-      rettype (*const func) parameters =                           \
+      static const struct _gl_ ## func ## _wrapper                 \
-        reinterpret_cast<rettype(*)parameters>(::rpl_func);        \
+      {                                                            \
+        typedef rettype (*type) parameters;                        \
+                                                                   \
+        inline operator type () const                              \
+        {                                                          \
+          return reinterpret_cast<type>(::rpl_func);               \
+        }                                                          \
+      } func = {};                                                 \
     }                                                              \
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #else
@@ -144,24 +181,37 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_SYS (func, rettype, parameters);
    declares a C++ alias called GNULIB_NAMESPACE::func
    that redirects to the system provided function func, if GNULIB_NAMESPACE
    is defined.
    Example:
      _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
- */
+
+   Wrapping func in an object with an inline conversion operator
+   avoids a reference to func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
 #if defined __cplusplus && defined GNULIB_NAMESPACE
-  /* If we were to write
-       rettype (*const func) parameters = ::func;
-     like above in _GL_CXXALIAS_RPL_1, the compiler could optimize calls
-     better (remove an indirection through a 'static' pointer variable),
-     but then the _GL_CXXALIASWARN macro below would cause a warning not only
-     for uses of ::func but also for uses of GNULIB_NAMESPACE::func.  */
 # define _GL_CXXALIAS_SYS(func,rettype,parameters)            \
     namespace GNULIB_NAMESPACE                                \
     {                                                         \
-      static rettype (*func) parameters = ::func;  \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::func;                                      \
+        }                                                     \
+      } func = {};                                            \
     }                                                         \
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #else
@@ -178,8 +228,15 @@
 # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
     namespace GNULIB_NAMESPACE                          \
     {                                                   \
-      static rettype (*func) parameters =               \
+      static const struct _gl_ ## func ## _wrapper      \
-        reinterpret_cast<rettype(*)parameters>(::func); \
+      {                                                 \
+        typedef rettype (*type) parameters;             \
+                                                        \
+        inline operator type () const                   \
+        {                                               \
+          return reinterpret_cast<type>(::func);        \
+        }                                               \
+      } func = {};                                      \
     }                                                   \
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #else
@@ -202,9 +259,15 @@
 # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
     namespace GNULIB_NAMESPACE                                                \
     {                                                                         \
-      static rettype (*func) parameters =                                     \
+      static const struct _gl_ ## func ## _wrapper                            \
-        reinterpret_cast<rettype(*)parameters>(                               \
+      {                                                                       \
-          (rettype2(*)parameters2)(::func));                                  \
+        typedef rettype (*type) parameters;                                   \
+                                                                              \
+        inline operator type () const                                         \
+        {                                                                     \
+          return reinterpret_cast<type>((rettype2 (*) parameters2)(::func));  \
+        }                                                                     \
+      } func = {};                                                            \
     }                                                                         \
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #else
@@ -221,9 +284,9 @@
    _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
 # define _GL_CXXALIASWARN_1(func,namespace) \
    _GL_CXXALIASWARN_2 (func, namespace)
-/* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN_2(func,namespace) \
     _GL_WARN_ON_USE (func, \
                      "The symbol ::" #func " refers to the system function. " \
@@ -249,16 +312,13 @@
                         GNULIB_NAMESPACE)
 # define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
    _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
-/* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
-    _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
                          "The symbol ::" #func " refers to the system function. " \
                          "Use " #namespace "::" #func " instead.")
-# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
-#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
-     extern __typeof__ (func) func
 # else
 #  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
      _GL_EXTERN_C int _gl_cxxalias_dummy

gl/calloc.c

@@ -0,0 +1,55 @@
+/* calloc() function that is glibc compatible.
+   This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
+   Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering and Bruno Haible */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+
+#include "xalloc-oversized.h"
+
+/* Call the system's calloc below.  */
+#undef calloc
+
+/* Allocate and zero-fill an NxS-byte block of memory from the heap,
+   even if N or S is zero.  */
+
+void *
+rpl_calloc (size_t n, size_t s)
+{
+  if (n == 0 || s == 0)
+    n = s = 1;
+
+  if (xalloc_oversized (n, s))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  void *result = calloc (n, s);
+
+#if !HAVE_MALLOC_POSIX
+  if (result == NULL)
+    errno = ENOMEM;
+#endif
+
+  return result;
+}

gl/cdefs.h

@@ -0,0 +1,707 @@
+/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
+   Copyright The GNU Toolchain Authors.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef	_SYS_CDEFS_H
+#define	_SYS_CDEFS_H	1
+
+/* We are almost always included from features.h. */
+#ifndef _FEATURES_H
+# include <features.h>
+#endif
+
+/* The GNU libc does not support any K&R compilers or the traditional mode
+   of ISO C compilers anymore.  Check for some of the combinations not
+   supported anymore.  */
+#if defined __GNUC__ && !defined __STDC__
+# error "You need a ISO C conforming compiler to use the glibc headers"
+#endif
+
+/* Some user header file might have defined this before.  */
+#undef	__P
+#undef	__PMT
+
+/* Compilers that lack __has_attribute may object to
+       #if defined __has_attribute && __has_attribute (...)
+   even though they do not need to evaluate the right-hand side of the &&.
+   Similarly for __has_builtin, etc.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || (defined __apple_build_version__ \
+             ? 6000000 <= __apple_build_version__ \
+             : 3 < __clang_major__ + (5 <= __clang_minor__))))
+# define __glibc_has_attribute(attr) __has_attribute (attr)
+#else
+# define __glibc_has_attribute(attr) 0
+#endif
+#ifdef __has_builtin
+# define __glibc_has_builtin(name) __has_builtin (name)
+#else
+# define __glibc_has_builtin(name) 0
+#endif
+#ifdef __has_extension
+# define __glibc_has_extension(ext) __has_extension (ext)
+#else
+# define __glibc_has_extension(ext) 0
+#endif
+
+#if defined __GNUC__ || defined __clang__
+
+/* All functions, except those with callbacks or those that
+   synchronize memory, are leaf functions.  */
+# if __GNUC_PREREQ (4, 6) && !defined _LIBC
+#  define __LEAF , __leaf__
+#  define __LEAF_ATTR __attribute__ ((__leaf__))
+# else
+#  define __LEAF
+#  define __LEAF_ATTR
+# endif
+
+/* GCC can always grok prototypes.  For C++ programs we add throw()
+   to help it optimize the function calls.  But this only works with
+   gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+   as non-throwing using a function attribute since programs can use
+   the -fexceptions options for C code as well.  */
+# if !defined __cplusplus \
+     && (__GNUC_PREREQ (3, 4) || __glibc_has_attribute (__nothrow__))
+#  define __THROW	__attribute__ ((__nothrow__ __LEAF))
+#  define __THROWNL	__attribute__ ((__nothrow__))
+#  define __NTH(fct)	__attribute__ ((__nothrow__ __LEAF)) fct
+#  define __NTHNL(fct)  __attribute__ ((__nothrow__)) fct
+# else
+#  if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major >= 4)
+#   if __cplusplus >= 201103L
+#    define __THROW	noexcept (true)
+#   else
+#    define __THROW	throw ()
+#   endif
+#   define __THROWNL	__THROW
+#   define __NTH(fct)	__LEAF_ATTR fct __THROW
+#   define __NTHNL(fct) fct __THROW
+#  else
+#   define __THROW
+#   define __THROWNL
+#   define __NTH(fct)	fct
+#   define __NTHNL(fct) fct
+#  endif
+# endif
+
+#else	/* Not GCC or clang.  */
+
+# if (defined __cplusplus						\
+      || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
+#  define __inline	inline
+# else
+#  define __inline		/* No inline functions.  */
+# endif
+
+# define __THROW
+# define __THROWNL
+# define __NTH(fct)	fct
+
+#endif	/* GCC || clang.  */
+
+/* These two macros are not used in glibc anymore.  They are kept here
+   only because some other projects expect the macros to be defined.  */
+#define __P(args)	args
+#define __PMT(args)	args
+
+/* For these things, GCC behaves the ANSI way normally,
+   and the non-ANSI way under -traditional.  */
+
+#define __CONCAT(x,y)	x ## y
+#define __STRING(x)	#x
+
+/* This is not a typedef so `const __ptr_t' does the right thing.  */
+#define __ptr_t void *
+
+
+/* C++ needs to know that types and declarations are C, not C++.  */
+#ifdef	__cplusplus
+# define __BEGIN_DECLS	extern "C" {
+# define __END_DECLS	}
+#else
+# define __BEGIN_DECLS
+# define __END_DECLS
+#endif
+
+
+/* Fortify support.  */
+#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
+#define __bos0(ptr) __builtin_object_size (ptr, 0)
+
+/* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.  */
+#if __USE_FORTIFY_LEVEL == 3 && (__glibc_clang_prereq (9, 0)		      \
+				 || __GNUC_PREREQ (12, 0))
+# define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
+# define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
+#else
+# define __glibc_objsize0(__o) __bos0 (__o)
+# define __glibc_objsize(__o) __bos (__o)
+#endif
+
+/* Compile time conditions to choose between the regular, _chk and _chk_warn
+   variants.  These conditions should get evaluated to constant and optimized
+   away.  */
+
+#define __glibc_safe_len_cond(__l, __s, __osz) ((__l) <= (__osz) / (__s))
+#define __glibc_unsigned_or_positive(__l) \
+  ((__typeof (__l)) 0 < (__typeof (__l)) -1				      \
+   || (__builtin_constant_p (__l) && (__l) > 0))
+
+/* Length is known to be safe at compile time if the __L * __S <= __OBJSZ
+   condition can be folded to a constant and if it is true, or unknown (-1) */
+#define __glibc_safe_or_unknown_len(__l, __s, __osz) \
+  ((__osz) == (__SIZE_TYPE__) -1					      \
+   || (__glibc_unsigned_or_positive (__l)				      \
+       && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
+						       (__s), (__osz)))	      \
+       && __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), (__s), (__osz))))
+
+/* Conversely, we know at compile time that the length is unsafe if the
+   __L * __S <= __OBJSZ condition can be folded to a constant and if it is
+   false.  */
+#define __glibc_unsafe_len(__l, __s, __osz) \
+  (__glibc_unsigned_or_positive (__l)					      \
+   && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l),     \
+						   __s, __osz))		      \
+   && !__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
+
+/* Fortify function f.  __f_alias, __f_chk and __f_chk_warn must be
+   declared.  */
+
+#define __glibc_fortify(f, __l, __s, __osz, ...) \
+  (__glibc_safe_or_unknown_len (__l, __s, __osz)			      \
+   ? __ ## f ## _alias (__VA_ARGS__)					      \
+   : (__glibc_unsafe_len (__l, __s, __osz)				      \
+      ? __ ## f ## _chk_warn (__VA_ARGS__, __osz)			      \
+      : __ ## f ## _chk (__VA_ARGS__, __osz)))			      \
+
+/* Fortify function f, where object size argument passed to f is the number of
+   elements and not total size.  */
+
+#define __glibc_fortify_n(f, __l, __s, __osz, ...) \
+  (__glibc_safe_or_unknown_len (__l, __s, __osz)			      \
+   ? __ ## f ## _alias (__VA_ARGS__)					      \
+   : (__glibc_unsafe_len (__l, __s, __osz)				      \
+      ? __ ## f ## _chk_warn (__VA_ARGS__, (__osz) / (__s))		      \
+      : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s))))		      \
+
+#if __GNUC_PREREQ (4,3)
+# define __warnattr(msg) __attribute__((__warning__ (msg)))
+# define __errordecl(name, msg) \
+  extern void name (void) __attribute__((__error__ (msg)))
+#else
+# define __warnattr(msg)
+# define __errordecl(name, msg) extern void name (void)
+#endif
+
+/* Support for flexible arrays.
+   Headers that should use flexible arrays only if they're "real"
+   (e.g. only if they won't affect sizeof()) should test
+   #if __glibc_c99_flexarr_available.  */
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L && !defined __HP_cc
+# define __flexarr	[]
+# define __glibc_c99_flexarr_available 1
+#elif __GNUC_PREREQ (2,97) || defined __clang__
+/* GCC 2.97 and clang support C99 flexible array members as an extension,
+   even when in C89 mode or compiling C++ (any version).  */
+# define __flexarr	[]
+# define __glibc_c99_flexarr_available 1
+#elif defined __GNUC__
+/* Pre-2.97 GCC did not support C99 flexible arrays but did have
+   an equivalent extension with slightly different notation.  */
+# define __flexarr	[0]
+# define __glibc_c99_flexarr_available 1
+#else
+/* Some other non-C99 compiler.  Approximate with [1].  */
+# define __flexarr	[1]
+# define __glibc_c99_flexarr_available 0
+#endif
+
+
+/* __asm__ ("xyz") is used throughout the headers to rename functions
+   at the assembly language level.  This is wrapped by the __REDIRECT
+   macro, in order to support compilers that can do this some other
+   way.  When compilers don't support asm-names at all, we have to do
+   preprocessor tricks instead (which don't have exactly the right
+   semantics, but it's the best we can do).
+
+   Example:
+   int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
+
+#if (defined __GNUC__ && __GNUC__ >= 2) || (__clang_major__ >= 4)
+
+# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+# ifdef __cplusplus
+#  define __REDIRECT_NTH(name, proto, alias) \
+     name proto __THROW __asm__ (__ASMNAME (#alias))
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __THROWNL __asm__ (__ASMNAME (#alias))
+# else
+#  define __REDIRECT_NTH(name, proto, alias) \
+     name proto __asm__ (__ASMNAME (#alias)) __THROW
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __asm__ (__ASMNAME (#alias)) __THROWNL
+# endif
+# define __ASMNAME(cname)  __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
+# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
+
+/*
+#elif __SOME_OTHER_COMPILER__
+
+# define __REDIRECT(name, proto, alias) name proto; \
+	_Pragma("let " #name " = " #alias)
+*/
+#endif
+
+/* GCC and clang have various useful declarations that can be made with
+   the '__attribute__' syntax.  All of the ways we use this do fine if
+   they are omitted for compilers that don't understand it.  */
+#if !(defined __GNUC__ || defined __clang__)
+# define __attribute__(xyz)	/* Ignore */
+#endif
+
+/* At some point during the gcc 2.96 development the `malloc' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__malloc__)
+# define __attribute_malloc__ __attribute__ ((__malloc__))
+#else
+# define __attribute_malloc__ /* Ignore */
+#endif
+
+/* Tell the compiler which arguments to an allocation function
+   indicate the size of the allocation.  */
+#if __GNUC_PREREQ (4, 3)
+# define __attribute_alloc_size__(params) \
+  __attribute__ ((__alloc_size__ params))
+#else
+# define __attribute_alloc_size__(params) /* Ignore.  */
+#endif
+
+/* Tell the compiler which argument to an allocation function
+   indicates the alignment of the allocation.  */
+#if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__alloc_align__)
+# define __attribute_alloc_align__(param) \
+  __attribute__ ((__alloc_align__ param))
+#else
+# define __attribute_alloc_align__(param) /* Ignore.  */
+#endif
+
+/* At some point during the gcc 2.96 development the `pure' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__pure__)
+# define __attribute_pure__ __attribute__ ((__pure__))
+#else
+# define __attribute_pure__ /* Ignore */
+#endif
+
+/* This declaration tells the compiler that the value is constant.  */
+#if __GNUC_PREREQ (2,5) || __glibc_has_attribute (__const__)
+# define __attribute_const__ __attribute__ ((__const__))
+#else
+# define __attribute_const__ /* Ignore */
+#endif
+
+#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
+# define __attribute_maybe_unused__ __attribute__ ((__unused__))
+#else
+# define __attribute_maybe_unused__ /* Ignore */
+#endif
+
+/* At some point during the gcc 3.1 development the `used' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (3,1) || __glibc_has_attribute (__used__)
+# define __attribute_used__ __attribute__ ((__used__))
+# define __attribute_noinline__ __attribute__ ((__noinline__))
+#else
+# define __attribute_used__ __attribute__ ((__unused__))
+# define __attribute_noinline__ /* Ignore */
+#endif
+
+/* Since version 3.2, gcc allows marking deprecated functions.  */
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__deprecated__)
+# define __attribute_deprecated__ __attribute__ ((__deprecated__))
+#else
+# define __attribute_deprecated__ /* Ignore */
+#endif
+
+/* Since version 4.5, gcc also allows one to specify the message printed
+   when a deprecated function is used.  clang claims to be gcc 4.2, but
+   may also support this feature.  */
+#if __GNUC_PREREQ (4,5) \
+    || __glibc_has_extension (__attribute_deprecated_with_message__)
+# define __attribute_deprecated_msg__(msg) \
+	 __attribute__ ((__deprecated__ (msg)))
+#else
+# define __attribute_deprecated_msg__(msg) __attribute_deprecated__
+#endif
+
+/* At some point during the gcc 2.8 development the `format_arg' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.
+   If several `format_arg' attributes are given for the same function, in
+   gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+   all designated arguments are considered.  */
+#if __GNUC_PREREQ (2,8) || __glibc_has_attribute (__format_arg__)
+# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
+#else
+# define __attribute_format_arg__(x) /* Ignore */
+#endif
+
+/* At some point during the gcc 2.97 development the `strfmon' format
+   attribute for functions was introduced.  We don't want to use it
+   unconditionally (although this would be possible) since it
+   generates warnings.  */
+#if __GNUC_PREREQ (2,97) || __glibc_has_attribute (__format__)
+# define __attribute_format_strfmon__(a,b) \
+  __attribute__ ((__format__ (__strfmon__, a, b)))
+#else
+# define __attribute_format_strfmon__(a,b) /* Ignore */
+#endif
+
+/* The nonnull function attribute marks pointer parameters that
+   must not be NULL.  This has the name __nonnull in glibc,
+   and __attribute_nonnull__ in files shared with Gnulib to avoid
+   collision with a different __nonnull in DragonFlyBSD 5.9.  */
+#ifndef __attribute_nonnull__
+# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
+#  define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
+# else
+#  define __attribute_nonnull__(params)
+# endif
+#endif
+#ifndef __nonnull
+# define __nonnull(params) __attribute_nonnull__ (params)
+#endif
+
+/* The returns_nonnull function attribute marks the return type of the function
+   as always being non-null.  */
+#ifndef __returns_nonnull
+# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__)
+# define __returns_nonnull __attribute__ ((__returns_nonnull__))
+# else
+# define __returns_nonnull
+# endif
+#endif
+
+/* If fortification mode, we warn about unused results of certain
+   function calls which can lead to problems.  */
+#if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__)
+# define __attribute_warn_unused_result__ \
+   __attribute__ ((__warn_unused_result__))
+# if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
+#  define __wur __attribute_warn_unused_result__
+# endif
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+#ifndef __wur
+# define __wur /* Ignore */
+#endif
+
+/* Forces a function to be always inlined.  */
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__always_inline__)
+/* The Linux kernel defines __always_inline in stddef.h (283d7573), and
+   it conflicts with this definition.  Therefore undefine it first to
+   allow either header to be included first.  */
+# undef __always_inline
+# define __always_inline __inline __attribute__ ((__always_inline__))
+#else
+# undef __always_inline
+# define __always_inline __inline
+#endif
+
+/* Associate error messages with the source location of the call site rather
+   than with the source location inside the function.  */
+#if __GNUC_PREREQ (4,3) || __glibc_has_attribute (__artificial__)
+# define __attribute_artificial__ __attribute__ ((__artificial__))
+#else
+# define __attribute_artificial__ /* Ignore */
+#endif
+
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+   or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+   older than 4.3 may define these macros and still not guarantee GNU inlining
+   semantics.
+
+   clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+   semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+   __GNUC_GNU_INLINE__ macro definitions.  */
+#if (!defined __cplusplus || __GNUC_PREREQ (4,3) \
+     || (defined __clang__ && (defined __GNUC_STDC_INLINE__ \
+			       || defined __GNUC_GNU_INLINE__)))
+# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
+#  define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
+#  define __extern_always_inline \
+  extern __always_inline __attribute__ ((__gnu_inline__))
+# else
+#  define __extern_inline extern __inline
+#  define __extern_always_inline extern __always_inline
+# endif
+#endif
+
+#ifdef __extern_always_inline
+# define __fortify_function __extern_always_inline __attribute_artificial__
+#endif
+
+/* GCC 4.3 and above allow passing all anonymous arguments of an
+   __extern_always_inline function to some other vararg function.  */
+#if __GNUC_PREREQ (4,3)
+# define __va_arg_pack() __builtin_va_arg_pack ()
+# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
+#endif
+
+/* It is possible to compile containing GCC extensions even if GCC is
+   run in pedantic mode if the uses are carefully marked using the
+   `__extension__' keyword.  But this is not generally available before
+   version 2.8.  */
+#if !(__GNUC_PREREQ (2,8) || defined __clang__)
+# define __extension__		/* Ignore */
+#endif
+
+/* __restrict is known in EGCS 1.2 and above, and in clang.
+   It works also in C++ mode (outside of arrays), but only when spelled
+   as '__restrict', not 'restrict'.  */
+#if !(__GNUC_PREREQ (2,92) || __clang_major__ >= 3)
+# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#  define __restrict	restrict
+# else
+#  define __restrict	/* Ignore */
+# endif
+#endif
+
+/* ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+     array_name[restrict]
+   GCC 3.1 and clang support this.
+   This syntax is not usable in C++ mode.  */
+#if (__GNUC_PREREQ (3,1) || __clang_major__ >= 3) && !defined __cplusplus
+# define __restrict_arr	__restrict
+#else
+# ifdef __GNUC__
+#  define __restrict_arr	/* Not supported in old GCC.  */
+# else
+#  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#   define __restrict_arr	restrict
+#  else
+/* Some other non-C99 compiler.  */
+#   define __restrict_arr	/* Not supported.  */
+#  endif
+# endif
+#endif
+
+#if (__GNUC__ >= 3) || __glibc_has_builtin (__builtin_expect)
+# define __glibc_unlikely(cond)	__builtin_expect ((cond), 0)
+# define __glibc_likely(cond)	__builtin_expect ((cond), 1)
+#else
+# define __glibc_unlikely(cond)	(cond)
+# define __glibc_likely(cond)	(cond)
+#endif
+
+#if (!defined _Noreturn \
+     && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+     &&  !(__GNUC_PREREQ (4,7) \
+           || (3 < __clang_major__ + (5 <= __clang_minor__))))
+# if __GNUC_PREREQ (2,8)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# else
+#  define _Noreturn
+# endif
+#endif
+
+#if __GNUC_PREREQ (8, 0)
+/* Describes a char array whose address can safely be passed as the first
+   argument to strncpy and strncat, as the char array is not necessarily
+   a NUL-terminated string.  */
+# define __attribute_nonstring__ __attribute__ ((__nonstring__))
+#else
+# define __attribute_nonstring__
+#endif
+
+/* Undefine (also defined in libc-symbols.h).  */
+#undef __attribute_copy__
+#if __GNUC_PREREQ (9, 0)
+/* Copies attributes from the declaration or type referenced by
+   the argument.  */
+# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg)))
+#else
+# define __attribute_copy__(arg)
+#endif
+
+#if (!defined _Static_assert && !defined __cplusplus \
+     && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+     && (!(__GNUC_PREREQ (4, 6) || __clang_major__ >= 4) \
+         || defined __STRICT_ANSI__))
+# define _Static_assert(expr, diagnostic) \
+    extern int (*__Static_assert_function (void)) \
+      [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
+#endif
+
+/* Gnulib avoids including these, as they don't work on non-glibc or
+   older glibc platforms.  */
+#ifndef __GNULIB_CDEFS
+# include <bits/wordsize.h>
+# include <bits/long-double.h>
+#endif
+
+#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# ifdef __REDIRECT
+
+/* Alias name defined automatically.  */
+#  define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
+#  define __LDBL_REDIR_DECL(name) \
+  extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined automatically, with leading underscores.  */
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name \
+    __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined manually.  */
+#  define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
+#  define __LDBL_REDIR1_DECL(name, alias) \
+  extern __typeof (name) name __asm (__ASMNAME (#alias));
+
+#  define __LDBL_REDIR1_NTH(name, proto, alias) \
+  __REDIRECT_NTH (name, proto, alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
+
+/* Unused.  */
+#  define __REDIRECT_LDBL(name, proto, alias) ... unused__redirect_ldbl
+#  define __LDBL_REDIR_NTH(name, proto) ... unused__ldbl_redir_nth
+
+# else
+_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
+# endif
+#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+# define __LDBL_COMPAT 1
+# ifdef __REDIRECT
+#  define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
+#  define __LDBL_REDIR(name, proto) \
+  __LDBL_REDIR1 (name, proto, __nldbl_##name)
+#  define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
+#  define __LDBL_REDIR_NTH(name, proto) \
+  __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
+#  define __LDBL_REDIR1_DECL(name, alias) \
+  extern __typeof (name) name __asm (__ASMNAME (#alias));
+#  define __LDBL_REDIR_DECL(name) \
+  extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
+#  define __REDIRECT_LDBL(name, proto, alias) \
+  __LDBL_REDIR1 (name, proto, __nldbl_##alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
+# endif
+#endif
+#if (!defined __LDBL_COMPAT && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0) \
+    || !defined __REDIRECT
+# define __LDBL_REDIR1(name, proto, alias) name proto
+# define __LDBL_REDIR(name, proto) name proto
+# define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
+# define __LDBL_REDIR_NTH(name, proto) name proto __THROW
+# define __LDBL_REDIR2_DECL(name)
+# define __LDBL_REDIR_DECL(name)
+# ifdef __REDIRECT
+#  define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __REDIRECT_NTH (name, proto, alias)
+# endif
+#endif
+
+/* __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+   intended for use in preprocessor macros.
+
+   Note: MESSAGE must be a _single_ string; concatenation of string
+   literals is not supported.  */
+#if __GNUC_PREREQ (4,8) || __glibc_clang_prereq (3,5)
+# define __glibc_macro_warning1(message) _Pragma (#message)
+# define __glibc_macro_warning(message) \
+  __glibc_macro_warning1 (GCC warning message)
+#else
+# define __glibc_macro_warning(msg)
+#endif
+
+/* Generic selection (ISO C11) is a C-only feature, available in GCC
+   since version 4.9.  Previous versions do not provide generic
+   selection, even though they might set __STDC_VERSION__ to 201112L,
+   when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+   when testing __STDC_VERSION__ for generic selection support.
+   On the other hand, Clang also defines __GNUC__, so a clang-specific
+   check is required to enable the use of generic selection.  */
+#if !defined __cplusplus \
+    && (__GNUC_PREREQ (4, 9) \
+	|| __glibc_has_extension (c_generic_selections) \
+	|| (!defined __GNUC__ && defined __STDC_VERSION__ \
+	    && __STDC_VERSION__ >= 201112L))
+# define __HAVE_GENERIC_SELECTION 1
+#else
+# define __HAVE_GENERIC_SELECTION 0
+#endif
+
+#if __GNUC_PREREQ (10, 0)
+/* Designates a 1-based positional argument ref-index of pointer type
+   that can be used to access size-index elements of the pointed-to
+   array according to access mode, or at least one element when
+   size-index is not provided:
+     access (access-mode, <ref-index> [, <size-index>])  */
+#  define __attr_access(x) __attribute__ ((__access__ x))
+/* For _FORTIFY_SOURCE == 3 we use __builtin_dynamic_object_size, which may
+   use the access attribute to get object sizes from function definition
+   arguments, so we can't use them on functions we fortify.  Drop the object
+   size hints for such functions.  */
+#  if __USE_FORTIFY_LEVEL == 3
+#    define __fortified_attr_access(a, o, s) __attribute__ ((__access__ (a, o)))
+#  else
+#    define __fortified_attr_access(a, o, s) __attr_access ((a, o, s))
+#  endif
+#  if __GNUC_PREREQ (11, 0)
+#    define __attr_access_none(argno) __attribute__ ((__access__ (__none__, argno)))
+#  else
+#    define __attr_access_none(argno)
+#  endif
+#else
+#  define __fortified_attr_access(a, o, s)
+#  define __attr_access(x)
+#  define __attr_access_none(argno)
+#endif
+
+#if __GNUC_PREREQ (11, 0)
+/* Designates dealloc as a function to call to deallocate objects
+   allocated by the declared function.  */
+# define __attr_dealloc(dealloc, argno) \
+    __attribute__ ((__malloc__ (dealloc, argno)))
+# define __attr_dealloc_free __attr_dealloc (__builtin_free, 1)
+#else
+# define __attr_dealloc(dealloc, argno)
+# define __attr_dealloc_free
+#endif
+
+/* Specify that a function such as setjmp or vfork may return
+   twice.  */
+#if __GNUC_PREREQ (4, 1)
+# define __attribute_returns_twice__ __attribute__ ((__returns_twice__))
+#else
+# define __attribute_returns_twice__ /* Ignore.  */
+#endif
+
+#endif	 /* sys/cdefs.h */

gl/cloexec.c

@@ -0,0 +1,83 @@
+/* cloexec.c - set or clear the close-on-exec descriptor flag
+
+   Copyright (C) 1991, 2004-2006, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* The code is taken from glibc/manual/llio.texi  */
+
+#include <config.h>
+
+#include "cloexec.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
+   or clear the flag if VALUE is false.
+   Return 0 on success, or -1 on error with 'errno' set.
+
+   Note that on MingW, this function does NOT protect DESC from being
+   inherited into spawned children.  Instead, either use dup_cloexec
+   followed by closing the original DESC, or use interfaces such as
+   open or pipe2 that accept flags like O_CLOEXEC to create DESC
+   non-inheritable in the first place.  */
+
+int
+set_cloexec_flag (int desc, bool value)
+{
+#ifdef F_SETFD
+
+  int flags = fcntl (desc, F_GETFD, 0);
+
+  if (0 <= flags)
+    {
+      int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC);
+
+      if (flags == newflags
+          || fcntl (desc, F_SETFD, newflags) != -1)
+        return 0;
+    }
+
+  return -1;
+
+#else /* !F_SETFD */
+
+  /* Use dup2 to reject invalid file descriptors; the cloexec flag
+     will be unaffected.  */
+  if (desc < 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  if (dup2 (desc, desc) < 0)
+    /* errno is EBADF here.  */
+    return -1;
+
+  /* There is nothing we can do on this kind of platform.  Punt.  */
+  return 0;
+#endif /* !F_SETFD */
+}
+
+
+/* Duplicates a file handle FD, while marking the copy to be closed
+   prior to exec or spawn.  Returns -1 and sets errno if FD could not
+   be duplicated.  */
+
+int
+dup_cloexec (int fd)
+{
+  return fcntl (fd, F_DUPFD_CLOEXEC, 0);
+}

gl/cloexec.h

@@ -0,0 +1,34 @@
+/* cloexec.c - set or clear the close-on-exec descriptor flag
+
+   Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
+   or clear the flag if VALUE is false.
+   Return 0 on success, or -1 on error with 'errno' set.
+
+   Note that on MingW, this function does NOT protect DESC from being
+   inherited into spawned children.  Instead, either use dup_cloexec
+   followed by closing the original DESC, or use interfaces such as
+   open or pipe2 that accept flags like O_CLOEXEC to create DESC
+   non-inheritable in the first place.  */
+
+int set_cloexec_flag (int desc, bool value);
+
+/* Duplicates a file handle FD, while marking the copy to be closed
+   prior to exec or spawn.  Returns -1 and sets errno if FD could not
+   be duplicated.  */
+
+int dup_cloexec (int fd);

gl/close.c

@@ -0,0 +1,75 @@
+/* close replacement.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+
+#include "fd-hook.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef close
+
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+close_nothrow (int fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _close (fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+      errno = EBADF;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define close_nothrow _close
+# endif
+#else
+# define close_nothrow close
+#endif
+
+/* Override close() to call into other gnulib modules.  */
+
+int
+rpl_close (int fd)
+{
+#if WINDOWS_SOCKETS
+  int retval = execute_all_close_hooks (close_nothrow, fd);
+#else
+  int retval = close_nothrow (fd);
+#endif
+
+#if REPLACE_FCHDIR
+  if (retval >= 0)
+    _gl_unregister_fd (fd);
+#endif
+
+  return retval;
+}

gl/config.charset

@@ -1,684 +0,0 @@
-#! /bin/sh
-# Output a system dependent table of character encoding aliases.
-#
-#   Copyright (C) 2000-2004, 2006-2013 Free Software Foundation, Inc.
-#
-#   This program is free software; you can redistribute it and/or modify
-#   it under the terms of the GNU General Public License as published by
-#   the Free Software Foundation; either version 3, or (at your option)
-#   any later version.
-#
-#   This program is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#   GNU General Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License along
-#   with this program; if not, see <http://www.gnu.org/licenses/>.
-#
-# The table consists of lines of the form
-#    ALIAS  CANONICAL
-#
-# ALIAS is the (system dependent) result of "nl_langinfo (CODESET)".
-# ALIAS is compared in a case sensitive way.
-#
-# CANONICAL is the GNU canonical name for this character encoding.
-# It must be an encoding supported by libiconv. Support by GNU libc is
-# also desirable. CANONICAL is case insensitive. Usually an upper case
-# MIME charset name is preferred.
-# The current list of GNU canonical charset names is as follows.
-#
-#       name              MIME?             used by which systems
-#                                    (darwin = Mac OS X, woe32 = native Windows)
-#
-#   ASCII, ANSI_X3.4-1968       glibc solaris freebsd netbsd darwin cygwin
-#   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
-#   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
-#   ISO-8859-3              Y   glibc solaris cygwin
-#   ISO-8859-4              Y   osf solaris freebsd netbsd openbsd darwin
-#   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
-#   ISO-8859-6              Y   glibc aix hpux solaris cygwin
-#   ISO-8859-7              Y   glibc aix hpux irix osf solaris netbsd openbsd darwin cygwin
-#   ISO-8859-8              Y   glibc aix hpux osf solaris cygwin
-#   ISO-8859-9              Y   glibc aix hpux irix osf solaris darwin cygwin
-#   ISO-8859-13                 glibc netbsd openbsd darwin cygwin
-#   ISO-8859-14                 glibc cygwin
-#   ISO-8859-15                 glibc aix osf solaris freebsd netbsd openbsd darwin cygwin
-#   KOI8-R                  Y   glibc solaris freebsd netbsd openbsd darwin
-#   KOI8-U                  Y   glibc freebsd netbsd openbsd darwin cygwin
-#   KOI8-T                      glibc
-#   CP437                       dos
-#   CP775                       dos
-#   CP850                       aix osf dos
-#   CP852                       dos
-#   CP855                       dos
-#   CP856                       aix
-#   CP857                       dos
-#   CP861                       dos
-#   CP862                       dos
-#   CP864                       dos
-#   CP865                       dos
-#   CP866                       freebsd netbsd openbsd darwin dos
-#   CP869                       dos
-#   CP874                       woe32 dos
-#   CP922                       aix
-#   CP932                       aix cygwin woe32 dos
-#   CP943                       aix
-#   CP949                       osf darwin woe32 dos
-#   CP950                       woe32 dos
-#   CP1046                      aix
-#   CP1124                      aix
-#   CP1125                      dos
-#   CP1129                      aix
-#   CP1131                      darwin
-#   CP1250                      woe32
-#   CP1251                      glibc solaris netbsd openbsd darwin cygwin woe32
-#   CP1252                      aix woe32
-#   CP1253                      woe32
-#   CP1254                      woe32
-#   CP1255                      glibc woe32
-#   CP1256                      woe32
-#   CP1257                      woe32
-#   GB2312                  Y   glibc aix hpux irix solaris freebsd netbsd darwin
-#   EUC-JP                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin
-#   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin
-#   EUC-TW                      glibc aix hpux irix osf solaris netbsd
-#   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin cygwin
-#   BIG5-HKSCS                  glibc solaris darwin
-#   GBK                         glibc aix osf solaris darwin cygwin woe32 dos
-#   GB18030                     glibc solaris netbsd darwin
-#   SHIFT_JIS               Y   hpux osf solaris freebsd netbsd darwin
-#   JOHAB                       glibc solaris woe32
-#   TIS-620                     glibc aix hpux osf solaris cygwin
-#   VISCII                  Y   glibc
-#   TCVN5712-1                  glibc
-#   ARMSCII-8                   glibc darwin
-#   GEORGIAN-PS                 glibc cygwin
-#   PT154                       glibc
-#   HP-ROMAN8                   hpux
-#   HP-ARABIC8                  hpux
-#   HP-GREEK8                   hpux
-#   HP-HEBREW8                  hpux
-#   HP-TURKISH8                 hpux
-#   HP-KANA8                    hpux
-#   DEC-KANJI                   osf
-#   DEC-HANYU                   osf
-#   UTF-8                   Y   glibc aix hpux osf solaris netbsd darwin cygwin
-#
-# Note: Names which are not marked as being a MIME name should not be used in
-# Internet protocols for information interchange (mail, news, etc.).
-#
-# Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names. Applications
-# must understand both names and treat them as equivalent.
-#
-# The first argument passed to this file is the canonical host specification,
-#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
-# or
-#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
-
-host="$1"
-os=`echo "$host" | sed -e 's/^[^-]*-[^-]*-\(.*\)$/\1/'`
-echo "# This file contains a table of character encoding aliases,"
-echo "# suitable for operating system '${os}'."
-echo "# It was automatically generated from config.charset."
-# List of references, updated during installation:
-echo "# Packages using this file: "
-case "$os" in
-  linux-gnulibc1*)
-    # Linux libc5 doesn't have nl_langinfo(CODESET); therefore
-    # localcharset.c falls back to using the full locale name
-    # from the environment variables.
-    echo "C ASCII"
-    echo "POSIX ASCII"
-    for l in af af_ZA ca ca_ES da da_DK de de_AT de_BE de_CH de_DE de_LU \
-             en en_AU en_BW en_CA en_DK en_GB en_IE en_NZ en_US en_ZA \
-             en_ZW es es_AR es_BO es_CL es_CO es_DO es_EC es_ES es_GT \
-             es_HN es_MX es_PA es_PE es_PY es_SV es_US es_UY es_VE et \
-             et_EE eu eu_ES fi fi_FI fo fo_FO fr fr_BE fr_CA fr_CH fr_FR \
-             fr_LU ga ga_IE gl gl_ES id id_ID in in_ID is is_IS it it_CH \
-             it_IT kl kl_GL nl nl_BE nl_NL no no_NO pt pt_BR pt_PT sv \
-             sv_FI sv_SE; do
-      echo "$l ISO-8859-1"
-      echo "$l.iso-8859-1 ISO-8859-1"
-      echo "$l.iso-8859-15 ISO-8859-15"
-      echo "$l.iso-8859-15@euro ISO-8859-15"
-      echo "$l@euro ISO-8859-15"
-      echo "$l.cp-437 CP437"
-      echo "$l.cp-850 CP850"
-      echo "$l.cp-1252 CP1252"
-      echo "$l.cp-1252@euro CP1252"
-      #echo "$l.atari-st ATARI-ST" # not a commonly used encoding
-      echo "$l.utf-8 UTF-8"
-      echo "$l.utf-8@euro UTF-8"
-    done
-    for l in cs cs_CZ hr hr_HR hu hu_HU pl pl_PL ro ro_RO sk sk_SK sl \
-             sl_SI sr sr_CS sr_YU; do
-      echo "$l ISO-8859-2"
-      echo "$l.iso-8859-2 ISO-8859-2"
-      echo "$l.cp-852 CP852"
-      echo "$l.cp-1250 CP1250"
-      echo "$l.utf-8 UTF-8"
-    done
-    for l in mk mk_MK ru ru_RU; do
-      echo "$l ISO-8859-5"
-      echo "$l.iso-8859-5 ISO-8859-5"
-      echo "$l.koi8-r KOI8-R"
-      echo "$l.cp-866 CP866"
-      echo "$l.cp-1251 CP1251"
-      echo "$l.utf-8 UTF-8"
-    done
-    for l in ar ar_SA; do
-      echo "$l ISO-8859-6"
-      echo "$l.iso-8859-6 ISO-8859-6"
-      echo "$l.cp-864 CP864"
-      #echo "$l.cp-868 CP868" # not a commonly used encoding
-      echo "$l.cp-1256 CP1256"
-      echo "$l.utf-8 UTF-8"
-    done
-    for l in el el_GR gr gr_GR; do
-      echo "$l ISO-8859-7"
-      echo "$l.iso-8859-7 ISO-8859-7"
-      echo "$l.cp-869 CP869"
-      echo "$l.cp-1253 CP1253"
-      echo "$l.cp-1253@euro CP1253"
-      echo "$l.utf-8 UTF-8"
-      echo "$l.utf-8@euro UTF-8"
-    done
-    for l in he he_IL iw iw_IL; do
-      echo "$l ISO-8859-8"
-      echo "$l.iso-8859-8 ISO-8859-8"
-      echo "$l.cp-862 CP862"
-      echo "$l.cp-1255 CP1255"
-      echo "$l.utf-8 UTF-8"
-    done
-    for l in tr tr_TR; do
-      echo "$l ISO-8859-9"
-      echo "$l.iso-8859-9 ISO-8859-9"
-      echo "$l.cp-857 CP857"
-      echo "$l.cp-1254 CP1254"
-      echo "$l.utf-8 UTF-8"
-    done
-    for l in lt lt_LT lv lv_LV; do
-      #echo "$l BALTIC" # not a commonly used encoding, wrong encoding name
-      echo "$l ISO-8859-13"
-    done
-    for l in ru_UA uk uk_UA; do
-      echo "$l KOI8-U"
-    done
-    for l in zh zh_CN; do
-      #echo "$l GB_2312-80" # not a commonly used encoding, wrong encoding name
-      echo "$l GB2312"
-    done
-    for l in ja ja_JP ja_JP.EUC; do
-      echo "$l EUC-JP"
-    done
-    for l in ko ko_KR; do
-      echo "$l EUC-KR"
-    done
-    for l in th th_TH; do
-      echo "$l TIS-620"
-    done
-    for l in fa fa_IR; do
-      #echo "$l ISIRI-3342" # a broken encoding
-      echo "$l.utf-8 UTF-8"
-    done
-    ;;
-  linux* | *-gnu*)
-    # With glibc-2.1 or newer, we don't need any canonicalization,
-    # because glibc has iconv and both glibc and libiconv support all
-    # GNU canonical names directly. Therefore, the Makefile does not
-    # need to install the alias file at all.
-    # The following applies only to glibc-2.0.x and older libcs.
-    echo "ISO_646.IRV:1983 ASCII"
-    ;;
-  aix*)
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-6 ISO-8859-6"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-8 ISO-8859-8"
-    echo "ISO8859-9 ISO-8859-9"
-    echo "ISO8859-15 ISO-8859-15"
-    echo "IBM-850 CP850"
-    echo "IBM-856 CP856"
-    echo "IBM-921 ISO-8859-13"
-    echo "IBM-922 CP922"
-    echo "IBM-932 CP932"
-    echo "IBM-943 CP943"
-    echo "IBM-1046 CP1046"
-    echo "IBM-1124 CP1124"
-    echo "IBM-1129 CP1129"
-    echo "IBM-1252 CP1252"
-    echo "IBM-eucCN GB2312"
-    echo "IBM-eucJP EUC-JP"
-    echo "IBM-eucKR EUC-KR"
-    echo "IBM-eucTW EUC-TW"
-    echo "big5 BIG5"
-    echo "GBK GBK"
-    echo "TIS-620 TIS-620"
-    echo "UTF-8 UTF-8"
-    ;;
-  hpux*)
-    echo "iso88591 ISO-8859-1"
-    echo "iso88592 ISO-8859-2"
-    echo "iso88595 ISO-8859-5"
-    echo "iso88596 ISO-8859-6"
-    echo "iso88597 ISO-8859-7"
-    echo "iso88598 ISO-8859-8"
-    echo "iso88599 ISO-8859-9"
-    echo "iso885915 ISO-8859-15"
-    echo "roman8 HP-ROMAN8"
-    echo "arabic8 HP-ARABIC8"
-    echo "greek8 HP-GREEK8"
-    echo "hebrew8 HP-HEBREW8"
-    echo "turkish8 HP-TURKISH8"
-    echo "kana8 HP-KANA8"
-    echo "tis620 TIS-620"
-    echo "big5 BIG5"
-    echo "eucJP EUC-JP"
-    echo "eucKR EUC-KR"
-    echo "eucTW EUC-TW"
-    echo "hp15CN GB2312"
-    #echo "ccdc ?" # what is this?
-    echo "SJIS SHIFT_JIS"
-    echo "utf8 UTF-8"
-    ;;
-  irix*)
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-9 ISO-8859-9"
-    echo "eucCN GB2312"
-    echo "eucJP EUC-JP"
-    echo "eucKR EUC-KR"
-    echo "eucTW EUC-TW"
-    ;;
-  osf*)
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-4 ISO-8859-4"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-8 ISO-8859-8"
-    echo "ISO8859-9 ISO-8859-9"
-    echo "ISO8859-15 ISO-8859-15"
-    echo "cp850 CP850"
-    echo "big5 BIG5"
-    echo "dechanyu DEC-HANYU"
-    echo "dechanzi GB2312"
-    echo "deckanji DEC-KANJI"
-    echo "deckorean EUC-KR"
-    echo "eucJP EUC-JP"
-    echo "eucKR EUC-KR"
-    echo "eucTW EUC-TW"
-    echo "GBK GBK"
-    echo "KSC5601 CP949"
-    echo "sdeckanji EUC-JP"
-    echo "SJIS SHIFT_JIS"
-    echo "TACTIS TIS-620"
-    echo "UTF-8 UTF-8"
-    ;;
-  solaris*)
-    echo "646 ASCII"
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-3 ISO-8859-3"
-    echo "ISO8859-4 ISO-8859-4"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-6 ISO-8859-6"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-8 ISO-8859-8"
-    echo "ISO8859-9 ISO-8859-9"
-    echo "ISO8859-15 ISO-8859-15"
-    echo "koi8-r KOI8-R"
-    echo "ansi-1251 CP1251"
-    echo "BIG5 BIG5"
-    echo "Big5-HKSCS BIG5-HKSCS"
-    echo "gb2312 GB2312"
-    echo "GBK GBK"
-    echo "GB18030 GB18030"
-    echo "cns11643 EUC-TW"
-    echo "5601 EUC-KR"
-    echo "ko_KR.johap92 JOHAB"
-    echo "eucJP EUC-JP"
-    echo "PCK SHIFT_JIS"
-    echo "TIS620.2533 TIS-620"
-    #echo "sun_eu_greek ?" # what is this?
-    echo "UTF-8 UTF-8"
-    ;;
-  freebsd* | os2*)
-    # FreeBSD 4.2 doesn't have nl_langinfo(CODESET); therefore
-    # localcharset.c falls back to using the full locale name
-    # from the environment variables.
-    # Likewise for OS/2. OS/2 has XFree86 just like FreeBSD. Just
-    # reuse FreeBSD's locale data for OS/2.
-    echo "C ASCII"
-    echo "US-ASCII ASCII"
-    for l in la_LN lt_LN; do
-      echo "$l.ASCII ASCII"
-    done
-    for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
-             fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT la_LN \
-             lt_LN nl_BE nl_NL no_NO pt_PT sv_SE; do
-      echo "$l.ISO_8859-1 ISO-8859-1"
-      echo "$l.DIS_8859-15 ISO-8859-15"
-    done
-    for l in cs_CZ hr_HR hu_HU la_LN lt_LN pl_PL sl_SI; do
-      echo "$l.ISO_8859-2 ISO-8859-2"
-    done
-    for l in la_LN lt_LT; do
-      echo "$l.ISO_8859-4 ISO-8859-4"
-    done
-    for l in ru_RU ru_SU; do
-      echo "$l.KOI8-R KOI8-R"
-      echo "$l.ISO_8859-5 ISO-8859-5"
-      echo "$l.CP866 CP866"
-    done
-    echo "uk_UA.KOI8-U KOI8-U"
-    echo "zh_TW.BIG5 BIG5"
-    echo "zh_TW.Big5 BIG5"
-    echo "zh_CN.EUC GB2312"
-    echo "ja_JP.EUC EUC-JP"
-    echo "ja_JP.SJIS SHIFT_JIS"
-    echo "ja_JP.Shift_JIS SHIFT_JIS"
-    echo "ko_KR.EUC EUC-KR"
-    ;;
-  netbsd*)
-    echo "646 ASCII"
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-4 ISO-8859-4"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-13 ISO-8859-13"
-    echo "ISO8859-15 ISO-8859-15"
-    echo "eucCN GB2312"
-    echo "eucJP EUC-JP"
-    echo "eucKR EUC-KR"
-    echo "eucTW EUC-TW"
-    echo "BIG5 BIG5"
-    echo "SJIS SHIFT_JIS"
-    ;;
-  openbsd*)
-    echo "646 ASCII"
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-4 ISO-8859-4"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-13 ISO-8859-13"
-    echo "ISO8859-15 ISO-8859-15"
-    ;;
-  darwin[56]*)
-    # Darwin 6.8 doesn't have nl_langinfo(CODESET); therefore
-    # localcharset.c falls back to using the full locale name
-    # from the environment variables.
-    echo "C ASCII"
-    for l in en_AU en_CA en_GB en_US la_LN; do
-      echo "$l.US-ASCII ASCII"
-    done
-    for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
-             fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT nl_BE \
-             nl_NL no_NO pt_PT sv_SE; do
-      echo "$l ISO-8859-1"
-      echo "$l.ISO8859-1 ISO-8859-1"
-      echo "$l.ISO8859-15 ISO-8859-15"
-    done
-    for l in la_LN; do
-      echo "$l.ISO8859-1 ISO-8859-1"
-      echo "$l.ISO8859-15 ISO-8859-15"
-    done
-    for l in cs_CZ hr_HR hu_HU la_LN pl_PL sl_SI; do
-      echo "$l.ISO8859-2 ISO-8859-2"
-    done
-    for l in la_LN lt_LT; do
-      echo "$l.ISO8859-4 ISO-8859-4"
-    done
-    for l in ru_RU; do
-      echo "$l.KOI8-R KOI8-R"
-      echo "$l.ISO8859-5 ISO-8859-5"
-      echo "$l.CP866 CP866"
-    done
-    for l in bg_BG; do
-      echo "$l.CP1251 CP1251"
-    done
-    echo "uk_UA.KOI8-U KOI8-U"
-    echo "zh_TW.BIG5 BIG5"
-    echo "zh_TW.Big5 BIG5"
-    echo "zh_CN.EUC GB2312"
-    echo "ja_JP.EUC EUC-JP"
-    echo "ja_JP.SJIS SHIFT_JIS"
-    echo "ko_KR.EUC EUC-KR"
-    ;;
-  darwin*)
-    # Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
-    # useless:
-    # - It returns the empty string when LANG is set to a locale of the
-    #   form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
-    #   LC_CTYPE file.
-    # - The environment variables LANG, LC_CTYPE, LC_ALL are not set by
-    #   the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
-    # - The documentation says:
-    #     "... all code that calls BSD system routines should ensure
-    #      that the const *char parameters of these routines are in UTF-8
-    #      encoding. All BSD system functions expect their string
-    #      parameters to be in UTF-8 encoding and nothing else."
-    #   It also says
-    #     "An additional caveat is that string parameters for files,
-    #      paths, and other file-system entities must be in canonical
-    #      UTF-8. In a canonical UTF-8 Unicode string, all decomposable
-    #      characters are decomposed ..."
-    #   but this is not true: You can pass non-decomposed UTF-8 strings
-    #   to file system functions, and it is the OS which will convert
-    #   them to decomposed UTF-8 before accessing the file system.
-    # - The Apple Terminal application displays UTF-8 by default.
-    # - However, other applications are free to use different encodings:
-    #   - xterm uses ISO-8859-1 by default.
-    #   - TextEdit uses MacRoman by default.
-    # We prefer UTF-8 over decomposed UTF-8-MAC because one should
-    # minimize the use of decomposed Unicode. Unfortunately, through the
-    # Darwin file system, decomposed UTF-8 strings are leaked into user
-    # space nevertheless.
-    # Then there are also the locales with encodings other than US-ASCII
-    # and UTF-8. These locales can be occasionally useful to users (e.g.
-    # when grepping through ISO-8859-1 encoded text files), when all their
-    # file names are in US-ASCII.
-    echo "ISO8859-1 ISO-8859-1"
-    echo "ISO8859-2 ISO-8859-2"
-    echo "ISO8859-4 ISO-8859-4"
-    echo "ISO8859-5 ISO-8859-5"
-    echo "ISO8859-7 ISO-8859-7"
-    echo "ISO8859-9 ISO-8859-9"
-    echo "ISO8859-13 ISO-8859-13"
-    echo "ISO8859-15 ISO-8859-15"
-    echo "KOI8-R KOI8-R"
-    echo "KOI8-U KOI8-U"
-    echo "CP866 CP866"
-    echo "CP949 CP949"
-    echo "CP1131 CP1131"
-    echo "CP1251 CP1251"
-    echo "eucCN GB2312"
-    echo "GB2312 GB2312"
-    echo "eucJP EUC-JP"
-    echo "eucKR EUC-KR"
-    echo "Big5 BIG5"
-    echo "Big5HKSCS BIG5-HKSCS"
-    echo "GBK GBK"
-    echo "GB18030 GB18030"
-    echo "SJIS SHIFT_JIS"
-    echo "ARMSCII-8 ARMSCII-8"
-    echo "PT154 PT154"
-    #echo "ISCII-DEV ?"
-    echo "* UTF-8"
-    ;;
-  beos* | haiku*)
-    # BeOS and Haiku have a single locale, and it has UTF-8 encoding.
-    echo "* UTF-8"
-    ;;
-  msdosdjgpp*)
-    # DJGPP 2.03 doesn't have nl_langinfo(CODESET); therefore
-    # localcharset.c falls back to using the full locale name
-    # from the environment variables.
-    echo "#"
-    echo "# The encodings given here may not all be correct."
-    echo "# If you find that the encoding given for your language and"
-    echo "# country is not the one your DOS machine actually uses, just"
-    echo "# correct it in this file, and send a mail to"
-    echo "# Juan Manuel Guerrero <juan.guerrero@gmx.de>"
-    echo "# and Bruno Haible <bruno@clisp.org>."
-    echo "#"
-    echo "C ASCII"
-    # ISO-8859-1 languages
-    echo "ca CP850"
-    echo "ca_ES CP850"
-    echo "da CP865"    # not CP850 ??
-    echo "da_DK CP865" # not CP850 ??
-    echo "de CP850"
-    echo "de_AT CP850"
-    echo "de_CH CP850"
-    echo "de_DE CP850"
-    echo "en CP850"
-    echo "en_AU CP850" # not CP437 ??
-    echo "en_CA CP850"
-    echo "en_GB CP850"
-    echo "en_NZ CP437"
-    echo "en_US CP437"
-    echo "en_ZA CP850" # not CP437 ??
-    echo "es CP850"
-    echo "es_AR CP850"
-    echo "es_BO CP850"
-    echo "es_CL CP850"
-    echo "es_CO CP850"
-    echo "es_CR CP850"
-    echo "es_CU CP850"
-    echo "es_DO CP850"
-    echo "es_EC CP850"
-    echo "es_ES CP850"
-    echo "es_GT CP850"
-    echo "es_HN CP850"
-    echo "es_MX CP850"
-    echo "es_NI CP850"
-    echo "es_PA CP850"
-    echo "es_PY CP850"
-    echo "es_PE CP850"
-    echo "es_SV CP850"
-    echo "es_UY CP850"
-    echo "es_VE CP850"
-    echo "et CP850"
-    echo "et_EE CP850"
-    echo "eu CP850"
-    echo "eu_ES CP850"
-    echo "fi CP850"
-    echo "fi_FI CP850"
-    echo "fr CP850"
-    echo "fr_BE CP850"
-    echo "fr_CA CP850"
-    echo "fr_CH CP850"
-    echo "fr_FR CP850"
-    echo "ga CP850"
-    echo "ga_IE CP850"
-    echo "gd CP850"
-    echo "gd_GB CP850"
-    echo "gl CP850"
-    echo "gl_ES CP850"
-    echo "id CP850"    # not CP437 ??
-    echo "id_ID CP850" # not CP437 ??
-    echo "is CP861"    # not CP850 ??
-    echo "is_IS CP861" # not CP850 ??
-    echo "it CP850"
-    echo "it_CH CP850"
-    echo "it_IT CP850"
-    echo "lt CP775"
-    echo "lt_LT CP775"
-    echo "lv CP775"
-    echo "lv_LV CP775"
-    echo "nb CP865"    # not CP850 ??
-    echo "nb_NO CP865" # not CP850 ??
-    echo "nl CP850"
-    echo "nl_BE CP850"
-    echo "nl_NL CP850"
-    echo "nn CP865"    # not CP850 ??
-    echo "nn_NO CP865" # not CP850 ??
-    echo "no CP865"    # not CP850 ??
-    echo "no_NO CP865" # not CP850 ??
-    echo "pt CP850"
-    echo "pt_BR CP850"
-    echo "pt_PT CP850"
-    echo "sv CP850"
-    echo "sv_SE CP850"
-    # ISO-8859-2 languages
-    echo "cs CP852"
-    echo "cs_CZ CP852"
-    echo "hr CP852"
-    echo "hr_HR CP852"
-    echo "hu CP852"
-    echo "hu_HU CP852"
-    echo "pl CP852"
-    echo "pl_PL CP852"
-    echo "ro CP852"
-    echo "ro_RO CP852"
-    echo "sk CP852"
-    echo "sk_SK CP852"
-    echo "sl CP852"
-    echo "sl_SI CP852"
-    echo "sq CP852"
-    echo "sq_AL CP852"
-    echo "sr CP852"    # CP852 or CP866 or CP855 ??
-    echo "sr_CS CP852" # CP852 or CP866 or CP855 ??
-    echo "sr_YU CP852" # CP852 or CP866 or CP855 ??
-    # ISO-8859-3 languages
-    echo "mt CP850"
-    echo "mt_MT CP850"
-    # ISO-8859-5 languages
-    echo "be CP866"
-    echo "be_BE CP866"
-    echo "bg CP866"    # not CP855 ??
-    echo "bg_BG CP866" # not CP855 ??
-    echo "mk CP866"    # not CP855 ??
-    echo "mk_MK CP866" # not CP855 ??
-    echo "ru CP866"
-    echo "ru_RU CP866"
-    echo "uk CP1125"
-    echo "uk_UA CP1125"
-    # ISO-8859-6 languages
-    echo "ar CP864"
-    echo "ar_AE CP864"
-    echo "ar_DZ CP864"
-    echo "ar_EG CP864"
-    echo "ar_IQ CP864"
-    echo "ar_IR CP864"
-    echo "ar_JO CP864"
-    echo "ar_KW CP864"
-    echo "ar_MA CP864"
-    echo "ar_OM CP864"
-    echo "ar_QA CP864"
-    echo "ar_SA CP864"
-    echo "ar_SY CP864"
-    # ISO-8859-7 languages
-    echo "el CP869"
-    echo "el_GR CP869"
-    # ISO-8859-8 languages
-    echo "he CP862"
-    echo "he_IL CP862"
-    # ISO-8859-9 languages
-    echo "tr CP857"
-    echo "tr_TR CP857"
-    # Japanese
-    echo "ja CP932"
-    echo "ja_JP CP932"
-    # Chinese
-    echo "zh_CN GBK"
-    echo "zh_TW CP950" # not CP938 ??
-    # Korean
-    echo "kr CP949"    # not CP934 ??
-    echo "kr_KR CP949" # not CP934 ??
-    # Thai
-    echo "th CP874"
-    echo "th_TH CP874"
-    # Other
-    echo "eo CP850"
-    echo "eo_EO CP850"
-    ;;
-esac

gl/dirname-lgpl.c

@@ -1,20 +1,20 @@
 /* dirname.c -- return all but the last element in a file name
 
-   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2013 Free Software
+   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/dirname.c

@@ -1,11 +1,11 @@
 /* dirname.c -- return all but the last element in a file name
 
-   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2013 Free Software
+   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,7 +14,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/dirname.h

@@ -1,46 +1,53 @@
 /* Take file names apart into directory and base names.
 
-    Copyright (C) 1998, 2001, 2003-2006, 2009-2013 Free Software Foundation,
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
    Inc.
 
-    This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-    the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-    (at your option) any later version.
+   License, or (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef DIRNAME_H_
 # define DIRNAME_H_ 1
 
-# include <stdbool.h>
+# include <stdlib.h>
-# include <stddef.h>
+# include "filename.h"
-# include "dosname.h"
+# include "basename-lgpl.h"
 
 # ifndef DIRECTORY_SEPARATOR
 #  define DIRECTORY_SEPARATOR '/'
 # endif
 
-# ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
+#ifdef __cplusplus
-#  define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+extern "C" {
 #endif
 
 # if GNULIB_DIRNAME
-char *base_name (char const *file);
+char *base_name (char const *file)
-char *dir_name (char const *file);
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
+char *dir_name (char const *file)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
 # endif
 
-char *mdir_name (char const *file);
+char *mdir_name (char const *file)
-size_t base_len (char const *file) _GL_ATTRIBUTE_PURE;
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
 size_t dir_len (char const *file) _GL_ATTRIBUTE_PURE;
-char *last_component (char const *file) _GL_ATTRIBUTE_PURE;
 
 bool strip_trailing_slashes (char *file);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* not DIRNAME_H_ */

gl/dosname.h

@@ -1,53 +0,0 @@
-/* File names on MS-DOS/Windows systems.
-
-   Copyright (C) 2000-2001, 2004-2006, 2009-2013 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-   From Paul Eggert and Jim Meyering.  */
-
-#ifndef _DOSNAME_H
-#define _DOSNAME_H
-
-#if (defined _WIN32 || defined __WIN32__ ||     \
-     defined __MSDOS__ || defined __CYGWIN__ || \
-     defined __EMX__ || defined __DJGPP__)
-   /* This internal macro assumes ASCII, but all hosts that support drive
-      letters use ASCII.  */
-# define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a'  \
-                              <= 'z' - 'a')
-# define FILE_SYSTEM_PREFIX_LEN(Filename) \
-          (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
-# ifndef __CYGWIN__
-#  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
-# endif
-# define ISSLASH(C) ((C) == '/' || (C) == '\\')
-#else
-# define FILE_SYSTEM_PREFIX_LEN(Filename) 0
-# define ISSLASH(C) ((C) == '/')
-#endif
-
-#ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
-# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
-#endif
-
-#if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
-#  define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
-# else
-#  define IS_ABSOLUTE_FILE_NAME(F)                              \
-     (ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0)
-#endif
-#define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
-
-#endif /* DOSNAME_H_ */

gl/dup2.c

@@ -0,0 +1,189 @@
+/* Duplicate an open file descriptor to a specified file descriptor.
+
+   Copyright (C) 1999, 2004-2007, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <errno.h>
+#include <fcntl.h>
+
+#undef dup2
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+dup2_nothrow (int fd, int desired_fd)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _dup2 (fd, desired_fd);
+    }
+  CATCH_MSVC_INVAL
+    {
+      errno = EBADF;
+      result = -1;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define dup2_nothrow _dup2
+# endif
+
+static int
+ms_windows_dup2 (int fd, int desired_fd)
+{
+  int result;
+
+  /* If fd is closed, mingw hangs on dup2 (fd, fd).  If fd is open,
+     dup2 (fd, fd) returns 0, but all further attempts to use fd in
+     future dup2 calls will hang.  */
+  if (fd == desired_fd)
+    {
+      if ((HANDLE) _get_osfhandle (fd) == INVALID_HANDLE_VALUE)
+        {
+          errno = EBADF;
+          return -1;
+        }
+      return fd;
+    }
+
+  /* Wine 1.0.1 return 0 when desired_fd is negative but not -1:
+     https://bugs.winehq.org/show_bug.cgi?id=21289 */
+  if (desired_fd < 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  result = dup2_nothrow (fd, desired_fd);
+
+  if (result == 0)
+    result = desired_fd;
+
+  return result;
+}
+
+# define dup2 ms_windows_dup2
+
+#elif defined __KLIBC__
+
+# include <InnoTekLIBC/backend.h>
+
+static int
+klibc_dup2dirfd (int fd, int desired_fd)
+{
+  int tempfd;
+  int dupfd;
+
+  tempfd = open ("NUL", O_RDONLY);
+  if (tempfd == -1)
+    return -1;
+
+  if (tempfd == desired_fd)
+    {
+      close (tempfd);
+
+      char path[_MAX_PATH];
+      if (__libc_Back_ioFHToPath (fd, path, sizeof (path)))
+        return -1;
+
+      return open(path, O_RDONLY);
+    }
+
+  dupfd = klibc_dup2dirfd (fd, desired_fd);
+
+  close (tempfd);
+
+  return dupfd;
+}
+
+static int
+klibc_dup2 (int fd, int desired_fd)
+{
+  int dupfd;
+  struct stat sbuf;
+
+  dupfd = dup2 (fd, desired_fd);
+  if (dupfd == -1 && errno == ENOTSUP \
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+    {
+      close (desired_fd);
+
+      return klibc_dup2dirfd (fd, desired_fd);
+    }
+
+  return dupfd;
+}
+
+# define dup2 klibc_dup2
+#endif
+
+int
+rpl_dup2 (int fd, int desired_fd)
+{
+  int result;
+
+#ifdef F_GETFL
+  /* On Linux kernels 2.6.26-2.6.29, dup2 (fd, fd) returns -EBADF.
+     On Cygwin 1.5.x, dup2 (1, 1) returns 0.
+     On Cygwin 1.7.17, dup2 (1, -1) dumps core.
+     On Cygwin 1.7.25, dup2 (1, 256) can dump core.
+     On Haiku, dup2 (fd, fd) mistakenly clears FD_CLOEXEC.  */
+# if HAVE_SETDTABLESIZE
+  setdtablesize (desired_fd + 1);
+# endif
+  if (desired_fd < 0)
+    fd = desired_fd;
+  if (fd == desired_fd)
+    return fcntl (fd, F_GETFL) == -1 ? -1 : fd;
+#endif
+
+  result = dup2 (fd, desired_fd);
+
+  /* Correct an errno value on FreeBSD 6.1 and Cygwin 1.5.x.  */
+  if (result == -1 && errno == EMFILE)
+    errno = EBADF;
+#if REPLACE_FCHDIR
+  if (fd != desired_fd && result != -1)
+    result = _gl_register_dup (fd, result);
+#endif
+  return result;
+}

gl/dynarray.h

@@ -0,0 +1,284 @@
+/* Type-safe arrays which grow dynamically.
+   Copyright 2021-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert and Bruno Haible, 2021.  */
+
+#ifndef _GL_DYNARRAY_H
+#define _GL_DYNARRAY_H
+
+/* Before including this file, you need to define:
+
+   DYNARRAY_STRUCT
+      The struct tag of dynamic array to be defined.
+
+   DYNARRAY_ELEMENT
+      The type name of the element type.  Elements are copied
+      as if by memcpy, and can change address as the dynamic
+      array grows.
+
+   DYNARRAY_PREFIX
+      The prefix of the functions which are defined.
+
+   The following parameters are optional:
+
+   DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (E) is evaluated to deallocate the
+      contents of elements. E is of type  DYNARRAY_ELEMENT *.
+
+   DYNARRAY_ELEMENT_INIT
+      DYNARRAY_ELEMENT_INIT (E) is evaluated to initialize a new
+      element.  E is of type  DYNARRAY_ELEMENT *.
+      If DYNARRAY_ELEMENT_FREE but not DYNARRAY_ELEMENT_INIT is
+      defined, new elements are automatically zero-initialized.
+      Otherwise, new elements have undefined contents.
+
+   DYNARRAY_INITIAL_SIZE
+      The size of the statically allocated array (default:
+      at least 2, more elements if they fit into 128 bytes).
+      Must be a preprocessor constant.  If DYNARRAY_INITIAL_SIZE is 0,
+      there is no statically allocated array at, and all non-empty
+      arrays are heap-allocated.
+
+   DYNARRAY_FINAL_TYPE
+      The name of the type which holds the final array.  If not
+      defined, is PREFIX##finalize not provided.  DYNARRAY_FINAL_TYPE
+      must be a struct type, with members of type DYNARRAY_ELEMENT and
+      size_t at the start (in this order).
+
+   These macros are undefined after this header file has been
+   included.
+
+   The following types are provided (their members are private to the
+   dynarray implementation):
+
+     struct DYNARRAY_STRUCT
+
+   The following functions are provided:
+ */
+
+/* Initialize a dynamic array object.  This must be called before any
+   use of the object.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##init (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Deallocate the dynamic array and its elements.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##free (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return true if the dynamic array is in an error state.  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Mark the dynamic array as failed.  All elements are deallocated as
+   a side effect.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return the number of elements which have been added to the dynamic
+   array.  */
+#if 0
+static size_t
+       DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer to the first array element, if any.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer one element past the last array element.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Return a pointer to the array element at INDEX.  Terminate the
+   process if INDEX is out of bounds.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *list, size_t index);
+#endif
+
+/* Add ITEM at the end of the array, enlarging it by one element.
+   Mark *LIST as failed if the dynamic array allocation size cannot be
+   increased.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *list,
+                             DYNARRAY_ELEMENT item);
+#endif
+
+/* Allocate a place for a new element in *LIST and return a pointer to
+   it.  The pointer can be NULL if the dynamic array cannot be
+   enlarged due to a memory allocation failure.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Change the size of *LIST to SIZE.  If SIZE is larger than the
+   existing size, new elements are added (which can be initialized).
+   Otherwise, the list is truncated, and elements are freed.  Return
+   false on memory allocation failure (and mark *LIST as failed).  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##resize (struct DYNARRAY_STRUCT *list, size_t size);
+#endif
+
+/* Remove the last element of LIST if it is present.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##remove_last (struct DYNARRAY_STRUCT *list);
+#endif
+
+/* Remove all elements from the list.  The elements are freed, but the
+   list itself is not.  */
+#if 0
+static void
+       DYNARRAY_PREFIX##clear (struct DYNARRAY_STRUCT *list);
+#endif
+
+#if defined DYNARRAY_FINAL_TYPE
+/* Transfer the dynamic array to a permanent location at *RESULT.
+   Returns true on success on false on allocation failure.  In either
+   case, *LIST is re-initialized and can be reused.  A NULL pointer is
+   stored in *RESULT if LIST refers to an empty list.  On success, the
+   pointer in *RESULT is heap-allocated and must be deallocated using
+   free.  */
+#if 0
+static bool
+       DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
+                                  DYNARRAY_FINAL_TYPE *result);
+#endif
+#else /* !defined DYNARRAY_FINAL_TYPE */
+/* Transfer the dynamic array to a heap-allocated array and return a
+   pointer to it.  The pointer is NULL if memory allocation fails, or
+   if the array is empty, so this function should be used only for
+   arrays which are known not be empty (usually because they always
+   have a sentinel at the end).  If LENGTHP is not NULL, the array
+   length is written to *LENGTHP.  *LIST is re-initialized and can be
+   reused.  */
+#if 0
+static DYNARRAY_ELEMENT *
+       DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
+                                  size_t *lengthp);
+#endif
+#endif
+
+/* A minimal example which provides a growing list of integers can be
+   defined like this:
+
+     struct int_array
+     {
+       // Pointer to result array followed by its length,
+       // as required by DYNARRAY_FINAL_TYPE.
+       int *array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_int
+     #define DYNARRAY_ELEMENT int
+     #define DYNARRAY_PREFIX dynarray_int_
+     #define DYNARRAY_FINAL_TYPE struct int_array
+     #include <malloc/dynarray-skeleton.c>
+
+   To create a three-element array with elements 1, 2, 3, use this
+   code:
+
+     struct dynarray_int dyn;
+     dynarray_int_init (&dyn);
+     for (int i = 1; i <= 3; ++i)
+       {
+         int *place = dynarray_int_emplace (&dyn);
+         assert (place != NULL);
+         *place = i;
+       }
+     struct int_array result;
+     bool ok = dynarray_int_finalize (&dyn, &result);
+     assert (ok);
+     assert (result.length == 3);
+     assert (result.array[0] == 1);
+     assert (result.array[1] == 2);
+     assert (result.array[2] == 3);
+     free (result.array);
+
+   If the elements contain resources which must be freed, define
+   DYNARRAY_ELEMENT_FREE appropriately, like this:
+
+     struct str_array
+     {
+       char **array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_str
+     #define DYNARRAY_ELEMENT char *
+     #define DYNARRAY_ELEMENT_FREE(ptr) free (*ptr)
+     #define DYNARRAY_PREFIX dynarray_str_
+     #define DYNARRAY_FINAL_TYPE struct str_array
+     #include <malloc/dynarray-skeleton.c>
+ */
+
+
+/* The implementation is imported from glibc.  */
+
+/* Avoid possible conflicts with symbols exported by the GNU libc.  */
+#define __libc_dynarray_at_failure gl_dynarray_at_failure
+#define __libc_dynarray_emplace_enlarge gl_dynarray_emplace_enlarge
+#define __libc_dynarray_finalize gl_dynarray_finalize
+#define __libc_dynarray_resize_clear gl_dynarray_resize_clear
+#define __libc_dynarray_resize gl_dynarray_resize
+
+#if defined DYNARRAY_STRUCT || defined DYNARRAY_ELEMENT || defined DYNARRAY_PREFIX
+
+# ifndef _GL_LIKELY
+/* Rely on __builtin_expect, as provided by the module 'builtin-expect'.  */
+#  define _GL_LIKELY(cond) __builtin_expect ((cond), 1)
+#  define _GL_UNLIKELY(cond) __builtin_expect ((cond), 0)
+# endif
+
+/* Define auxiliary structs and declare auxiliary functions, common to all
+   instantiations of dynarray.  */
+# include <malloc/dynarray.gl.h>
+
+/* Define the instantiation, specified through
+     DYNARRAY_STRUCT
+     DYNARRAY_ELEMENT
+     DYNARRAY_PREFIX
+   etc.  */
+# include <malloc/dynarray-skeleton.gl.h>
+
+#else
+
+/* This file is being included from one of the malloc/dynarray_*.c files.  */
+# include <malloc/dynarray.h>
+
+#endif
+
+#endif /* _GL_DYNARRAY_H */

gl/errno.in.h

@@ -1,19 +1,19 @@
 /* A POSIX-like <errno.h>.
 
-   Copyright (C) 2008-2013 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_ERRNO_H
 
@@ -30,7 +30,7 @@
 
 
 /* On native Windows platforms, many macros are not defined.  */
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# if defined _WIN32 && ! defined __CYGWIN__
 
 /* These are the same values as defined by MSVC 10, for interoperability.  */
 
@@ -248,7 +248,7 @@
        interoperability.  */
 #   define EOWNERDEAD      58
 #   define ENOTRECOVERABLE 59
-#  elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#  elif defined _WIN32 && ! defined __CYGWIN__
     /* We have a conflict here: pthreads-win32 defines these values
        differently than MSVC 10.  It's hairy to decide which one to use.  */
 #   if defined __MINGW32__ && !defined USE_WINDOWS_THREADS

gl/error.c

@@ -1,19 +1,19 @@
 /* Error handler for noninteractive utilities
-   Copyright (C) 1990-1998, 2000-2007, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 1990-1998, 2000-2007, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
 
@@ -39,6 +39,11 @@
 # include <stdint.h>
 # include <wchar.h>
 # define mbsrtowcs __mbsrtowcs
+# define USE_UNLOCKED_IO 0
+# define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(a, b)
+# define _GL_ARG_NONNULL(a)
+#else
+# include "getprogname.h"
 #endif
 
 #if USE_UNLOCKED_IO
@@ -72,14 +77,14 @@ extern void __error (int status, int errnum, const char *message, ...)
 extern void __error_at_line (int status, int errnum, const char *file_name,
                              unsigned int line_number, const char *message,
                              ...)
-     __attribute__ ((__format__ (__printf__, 5, 6)));;
+     __attribute__ ((__format__ (__printf__, 5, 6)));
 # define error __error
 # define error_at_line __error_at_line
 
 # include <libio/iolibio.h>
-# define fflush(s) INTUSE(_IO_fflush) (s)
+# define fflush(s) _IO_fflush (s)
 # undef putc
-# define putc(c, fp) INTUSE(_IO_putc) (c, fp)
+# define putc(c, fp) _IO_putc (c, fp)
 
 # include <bits/libc-lock.h>
 
@@ -88,35 +93,37 @@ extern void __error_at_line (int status, int errnum, const char *file_name,
 # include <fcntl.h>
 # include <unistd.h>
 
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# if defined _WIN32 && ! defined __CYGWIN__
 /* Get declarations of the native Windows API functions.  */
 #  define WIN32_LEAN_AND_MEAN
 #  include <windows.h>
 /* Get _get_osfhandle.  */
+#  if GNULIB_MSVC_NOTHROW
 #   include "msvc-nothrow.h"
+#  else
+#   include <io.h>
+#  endif
 # endif
 
 /* The gnulib override of fcntl is not needed in this file.  */
 # undef fcntl
 
-# if !HAVE_DECL_STRERROR_R
+# if !(GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R)
 #  ifndef HAVE_DECL_STRERROR_R
 "this configure-time declaration test was not run"
 #  endif
 #  if STRERROR_R_CHAR_P
-char *strerror_r ();
+char *strerror_r (int errnum, char *buf, size_t buflen);
 #  else
-int strerror_r ();
+int strerror_r (int errnum, char *buf, size_t buflen);
 #  endif
 # endif
 
-/* The calling program should define program_name and set it to the
+# define program_name getprogname ()
-   name of the executing program.  */
-extern char *program_name;
 
-# if HAVE_STRERROR_R || defined strerror_r
+# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
 #  define __strerror_r strerror_r
-# endif /* HAVE_STRERROR_R || defined strerror_r */
+# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
 #endif  /* not _LIBC */
 
 #if !_LIBC
@@ -124,7 +131,7 @@ extern char *program_name;
 static int
 is_open (int fd)
 {
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# if defined _WIN32 && ! defined __CYGWIN__
   /* On native Windows: The initial state of unassigned standard file
      descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
      There is no fcntl, and the gnulib replacement fcntl does not support
@@ -169,9 +176,9 @@ print_errno_message (int errnum)
 {
   char const *s;
 
-#if defined HAVE_STRERROR_R || _LIBC
+#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
   char errbuf[1024];
-# if STRERROR_R_CHAR_P || _LIBC
+# if _LIBC || (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
   s = __strerror_r (errnum, errbuf, sizeof errbuf);
 # else
   if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
@@ -195,13 +202,12 @@ print_errno_message (int errnum)
 #endif
 }
 
-static void
+static void _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 0) _GL_ARG_NONNULL ((3))
 error_tail (int status, int errnum, const char *message, va_list args)
 {
 #if _LIBC
   if (_IO_fwide (stderr, 0) > 0)
     {
-# define ALLOCA_LIMIT 2000
       size_t len = strlen (message) + 1;
       wchar_t *wmessage = NULL;
       mbstate_t st;
@@ -237,7 +243,7 @@ error_tail (int status, int errnum, const char *message, va_list args)
           if (res != len)
             break;
 
-          if (__builtin_expect (len >= SIZE_MAX / 2, 0))
+          if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
             {
               /* This really should not happen if everything is fine.  */
               res = (size_t) -1;
@@ -266,7 +272,6 @@ error_tail (int status, int errnum, const char *message, va_list args)
   else
 #endif
     vfprintf (stderr, message, args);
-  va_end (args);
 
   ++error_message_count;
   if (errnum)
@@ -316,6 +321,7 @@ error (int status, int errnum, const char *message, ...)
 
   va_start (args, message);
   error_tail (status, errnum, message, args);
+  va_end (args);
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);
@@ -342,7 +348,10 @@ error_at_line (int status, int errnum, const char *file_name,
 
       if (old_line_number == line_number
           && (file_name == old_file_name
-              || strcmp (old_file_name, file_name) == 0))
+              || (old_file_name != NULL
+                  && file_name != NULL
+                  && strcmp (old_file_name, file_name) == 0)))
+
         /* Simply return and print nothing.  */
         return;
 
@@ -374,15 +383,16 @@ error_at_line (int status, int errnum, const char *file_name,
     }
 
 #if _LIBC
-  __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
+  __fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
               file_name, line_number);
 #else
-  fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
+  fprintf (stderr, file_name != NULL ? "%s:%u: " : " ",
            file_name, line_number);
 #endif
 
   va_start (args, message);
   error_tail (status, errnum, message, args);
+  va_end (args);
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);

gl/error.h

@@ -1,35 +1,26 @@
 /* Declaration for error-reporting function
-   Copyright (C) 1995-1997, 2003, 2006, 2008-2013 Free Software Foundation,
+   Copyright (C) 1995-1997, 2003, 2006, 2008-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _ERROR_H
 #define _ERROR_H 1
 
-/* The __attribute__ feature is available in gcc versions 2.5 and later.
+/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM.  */
-   The __-protected variants of the attributes 'format' and 'printf' are
+#include <stdio.h>
-   accepted by gcc versions 2.6.4 (effectively 2.7) and later.
-   We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
-   gnulib and libintl do '#define printf __printf__' when they override
-   the 'printf' function.  */
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
-# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
-#else
-# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
-#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -40,11 +31,21 @@ extern "C" {
    If STATUS is nonzero, terminate the program with 'exit (STATUS)'.  */
 
 extern void error (int __status, int __errnum, const char *__format, ...)
-     _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4));
+#if GNULIB_VFPRINTF_POSIX
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4))
+#else
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 3, 4))
+#endif
+     ;
 
 extern void error_at_line (int __status, int __errnum, const char *__fname,
                            unsigned int __lineno, const char *__format, ...)
-     _GL_ATTRIBUTE_FORMAT ((__printf__, 5, 6));
+#if GNULIB_VFPRINTF_POSIX
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 5, 6))
+#else
+     _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 5, 6))
+#endif
+     ;
 
 /* If NULL, error will flush stdout, then print on stderr the program
    name, a colon and a space.  Otherwise, error will call this

gl/exitfail.c

@@ -1,19 +1,19 @@
 /* Failure exit status
 
-   Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/exitfail.h

@@ -1,18 +1,18 @@
 /* Failure exit status
 
-   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 extern int volatile exit_failure;

gl/fcntl.c

@@ -0,0 +1,629 @@
+/* Provide file descriptor control.
+
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <fcntl.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifdef __KLIBC__
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+
+/* Upper bound on getdtablesize().  See lib/getdtablesize.c.  */
+# define OPEN_MAX_MAX 0x10000
+
+/* Duplicate OLDFD into the first available slot of at least NEWFD,
+   which must be positive, with FLAGS determining whether the duplicate
+   will be inheritable.  */
+static int
+dupfd (int oldfd, int newfd, int flags)
+{
+  /* Mingw has no way to create an arbitrary fd.  Iterate until all
+     file descriptors less than newfd are filled up.  */
+  HANDLE curr_process = GetCurrentProcess ();
+  HANDLE old_handle = (HANDLE) _get_osfhandle (oldfd);
+  unsigned char fds_to_close[OPEN_MAX_MAX / CHAR_BIT];
+  unsigned int fds_to_close_bound = 0;
+  int result;
+  BOOL inherit = flags & O_CLOEXEC ? FALSE : TRUE;
+  int mode;
+
+  if (newfd < 0 || getdtablesize () <= newfd)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (old_handle == INVALID_HANDLE_VALUE
+      || (mode = _setmode (oldfd, O_BINARY)) == -1)
+    {
+      /* oldfd is not open, or is an unassigned standard file
+         descriptor.  */
+      errno = EBADF;
+      return -1;
+    }
+  _setmode (oldfd, mode);
+  flags |= mode;
+
+  for (;;)
+    {
+      HANDLE new_handle;
+      int duplicated_fd;
+      unsigned int index;
+
+      if (!DuplicateHandle (curr_process,           /* SourceProcessHandle */
+                            old_handle,             /* SourceHandle */
+                            curr_process,           /* TargetProcessHandle */
+                            (PHANDLE) &new_handle,  /* TargetHandle */
+                            (DWORD) 0,              /* DesiredAccess */
+                            inherit,                /* InheritHandle */
+                            DUPLICATE_SAME_ACCESS)) /* Options */
+        {
+          switch (GetLastError ())
+            {
+              case ERROR_TOO_MANY_OPEN_FILES:
+                errno = EMFILE;
+                break;
+              case ERROR_INVALID_HANDLE:
+              case ERROR_INVALID_TARGET_HANDLE:
+              case ERROR_DIRECT_ACCESS_HANDLE:
+                errno = EBADF;
+                break;
+              case ERROR_INVALID_PARAMETER:
+              case ERROR_INVALID_FUNCTION:
+              case ERROR_INVALID_ACCESS:
+                errno = EINVAL;
+                break;
+              default:
+                errno = EACCES;
+                break;
+            }
+          result = -1;
+          break;
+        }
+      duplicated_fd = _open_osfhandle ((intptr_t) new_handle, flags);
+      if (duplicated_fd < 0)
+        {
+          CloseHandle (new_handle);
+          result = -1;
+          break;
+        }
+      if (newfd <= duplicated_fd)
+        {
+          result = duplicated_fd;
+          break;
+        }
+
+      /* Set the bit duplicated_fd in fds_to_close[].  */
+      index = (unsigned int) duplicated_fd / CHAR_BIT;
+      if (fds_to_close_bound <= index)
+        {
+          if (sizeof fds_to_close <= index)
+            /* Need to increase OPEN_MAX_MAX.  */
+            abort ();
+          memset (fds_to_close + fds_to_close_bound, '\0',
+                  index + 1 - fds_to_close_bound);
+          fds_to_close_bound = index + 1;
+        }
+      fds_to_close[index] |= 1 << ((unsigned int) duplicated_fd % CHAR_BIT);
+    }
+
+  /* Close the previous fds that turned out to be too small.  */
+  {
+    int saved_errno = errno;
+    unsigned int duplicated_fd;
+
+    for (duplicated_fd = 0;
+         duplicated_fd < fds_to_close_bound * CHAR_BIT;
+         duplicated_fd++)
+      if ((fds_to_close[duplicated_fd / CHAR_BIT]
+           >> (duplicated_fd % CHAR_BIT))
+          & 1)
+        close (duplicated_fd);
+
+    errno = saved_errno;
+  }
+
+# if REPLACE_FCHDIR
+  if (0 <= result)
+    result = _gl_register_dup (oldfd, result);
+# endif
+  return result;
+}
+#endif /* W32 */
+
+/* Forward declarations, because we '#undef fcntl' in the middle of this
+   compilation unit.  */
+/* Our implementation of fcntl (fd, F_DUPFD, target).  */
+static int rpl_fcntl_DUPFD (int fd, int target);
+/* Our implementation of fcntl (fd, F_DUPFD_CLOEXEC, target).  */
+static int rpl_fcntl_DUPFD_CLOEXEC (int fd, int target);
+#ifdef __KLIBC__
+/* Adds support for fcntl on directories.  */
+static int klibc_fcntl (int fd, int action, /* arg */...);
+#endif
+
+
+/* Perform the specified ACTION on the file descriptor FD, possibly
+   using the argument ARG further described below.  This replacement
+   handles the following actions, and forwards all others on to the
+   native fcntl.  An unrecognized ACTION returns -1 with errno set to
+   EINVAL.
+
+   F_DUPFD - duplicate FD, with int ARG being the minimum target fd.
+   If successful, return the duplicate, which will be inheritable;
+   otherwise return -1 and set errno.
+
+   F_DUPFD_CLOEXEC - duplicate FD, with int ARG being the minimum
+   target fd.  If successful, return the duplicate, which will not be
+   inheritable; otherwise return -1 and set errno.
+
+   F_GETFD - ARG need not be present.  If successful, return a
+   non-negative value containing the descriptor flags of FD (only
+   FD_CLOEXEC is portable, but other flags may be present); otherwise
+   return -1 and set errno.  */
+
+int
+fcntl (int fd, int action, /* arg */...)
+#undef fcntl
+#ifdef __KLIBC__
+# define fcntl klibc_fcntl
+#endif
+{
+  va_list arg;
+  int result = -1;
+  va_start (arg, action);
+  switch (action)
+    {
+    case F_DUPFD:
+      {
+        int target = va_arg (arg, int);
+        result = rpl_fcntl_DUPFD (fd, target);
+        break;
+      }
+
+    case F_DUPFD_CLOEXEC:
+      {
+        int target = va_arg (arg, int);
+        result = rpl_fcntl_DUPFD_CLOEXEC (fd, target);
+        break;
+      }
+
+#if !HAVE_FCNTL
+    case F_GETFD:
+      {
+# if defined _WIN32 && ! defined __CYGWIN__
+        HANDLE handle = (HANDLE) _get_osfhandle (fd);
+        DWORD flags;
+        if (handle == INVALID_HANDLE_VALUE
+            || GetHandleInformation (handle, &flags) == 0)
+          errno = EBADF;
+        else
+          result = (flags & HANDLE_FLAG_INHERIT) ? 0 : FD_CLOEXEC;
+# else /* !W32 */
+        /* Use dup2 to reject invalid file descriptors.  No way to
+           access this information, so punt.  */
+        if (0 <= dup2 (fd, fd))
+          result = 0;
+# endif /* !W32 */
+        break;
+      } /* F_GETFD */
+#endif /* !HAVE_FCNTL */
+
+      /* Implementing F_SETFD on mingw is not trivial - there is no
+         API for changing the O_NOINHERIT bit on an fd, and merely
+         changing the HANDLE_FLAG_INHERIT bit on the underlying handle
+         can lead to odd state.  It may be possible by duplicating the
+         handle, using _open_osfhandle with the right flags, then
+         using dup2 to move the duplicate onto the original, but that
+         is not supported for now.  */
+
+    default:
+      {
+#if HAVE_FCNTL
+        switch (action)
+          {
+          #ifdef F_BARRIERFSYNC                  /* macOS */
+          case F_BARRIERFSYNC:
+          #endif
+          #ifdef F_CHKCLEAN                      /* macOS */
+          case F_CHKCLEAN:
+          #endif
+          #ifdef F_CLOSEM                        /* NetBSD, HP-UX */
+          case F_CLOSEM:
+          #endif
+          #ifdef F_FLUSH_DATA                    /* macOS */
+          case F_FLUSH_DATA:
+          #endif
+          #ifdef F_FREEZE_FS                     /* macOS */
+          case F_FREEZE_FS:
+          #endif
+          #ifdef F_FULLFSYNC                     /* macOS */
+          case F_FULLFSYNC:
+          #endif
+          #ifdef F_GETCONFINED                   /* macOS */
+          case F_GETCONFINED:
+          #endif
+          #ifdef F_GETDEFAULTPROTLEVEL           /* macOS */
+          case F_GETDEFAULTPROTLEVEL:
+          #endif
+          #ifdef F_GETFD                         /* POSIX */
+          case F_GETFD:
+          #endif
+          #ifdef F_GETFL                         /* POSIX */
+          case F_GETFL:
+          #endif
+          #ifdef F_GETLEASE                      /* Linux */
+          case F_GETLEASE:
+          #endif
+          #ifdef F_GETNOSIGPIPE                  /* macOS */
+          case F_GETNOSIGPIPE:
+          #endif
+          #ifdef F_GETOWN                        /* POSIX */
+          case F_GETOWN:
+          #endif
+          #ifdef F_GETPIPE_SZ                    /* Linux */
+          case F_GETPIPE_SZ:
+          #endif
+          #ifdef F_GETPROTECTIONCLASS            /* macOS */
+          case F_GETPROTECTIONCLASS:
+          #endif
+          #ifdef F_GETPROTECTIONLEVEL            /* macOS */
+          case F_GETPROTECTIONLEVEL:
+          #endif
+          #ifdef F_GET_SEALS                     /* Linux */
+          case F_GET_SEALS:
+          #endif
+          #ifdef F_GETSIG                        /* Linux */
+          case F_GETSIG:
+          #endif
+          #ifdef F_MAXFD                         /* NetBSD */
+          case F_MAXFD:
+          #endif
+          #ifdef F_RECYCLE                       /* macOS */
+          case F_RECYCLE:
+          #endif
+          #ifdef F_SETFIFOENH                    /* HP-UX */
+          case F_SETFIFOENH:
+          #endif
+          #ifdef F_THAW_FS                       /* macOS */
+          case F_THAW_FS:
+          #endif
+            /* These actions take no argument.  */
+            result = fcntl (fd, action);
+            break;
+
+          #ifdef F_ADD_SEALS                     /* Linux */
+          case F_ADD_SEALS:
+          #endif
+          #ifdef F_BADFD                         /* Solaris */
+          case F_BADFD:
+          #endif
+          #ifdef F_CHECK_OPENEVT                 /* macOS */
+          case F_CHECK_OPENEVT:
+          #endif
+          #ifdef F_DUP2FD                        /* FreeBSD, AIX, Solaris */
+          case F_DUP2FD:
+          #endif
+          #ifdef F_DUP2FD_CLOEXEC                /* FreeBSD, Solaris */
+          case F_DUP2FD_CLOEXEC:
+          #endif
+          #ifdef F_DUP2FD_CLOFORK                /* Solaris */
+          case F_DUP2FD_CLOFORK:
+          #endif
+          #ifdef F_DUPFD                         /* POSIX */
+          case F_DUPFD:
+          #endif
+          #ifdef F_DUPFD_CLOEXEC                 /* POSIX */
+          case F_DUPFD_CLOEXEC:
+          #endif
+          #ifdef F_DUPFD_CLOFORK                 /* Solaris */
+          case F_DUPFD_CLOFORK:
+          #endif
+          #ifdef F_GETXFL                        /* Solaris */
+          case F_GETXFL:
+          #endif
+          #ifdef F_GLOBAL_NOCACHE                /* macOS */
+          case F_GLOBAL_NOCACHE:
+          #endif
+          #ifdef F_MAKECOMPRESSED                /* macOS */
+          case F_MAKECOMPRESSED:
+          #endif
+          #ifdef F_MOVEDATAEXTENTS               /* macOS */
+          case F_MOVEDATAEXTENTS:
+          #endif
+          #ifdef F_NOCACHE                       /* macOS */
+          case F_NOCACHE:
+          #endif
+          #ifdef F_NODIRECT                      /* macOS */
+          case F_NODIRECT:
+          #endif
+          #ifdef F_NOTIFY                        /* Linux */
+          case F_NOTIFY:
+          #endif
+          #ifdef F_OPLKACK                       /* IRIX */
+          case F_OPLKACK:
+          #endif
+          #ifdef F_OPLKREG                       /* IRIX */
+          case F_OPLKREG:
+          #endif
+          #ifdef F_RDAHEAD                       /* macOS */
+          case F_RDAHEAD:
+          #endif
+          #ifdef F_SETBACKINGSTORE               /* macOS */
+          case F_SETBACKINGSTORE:
+          #endif
+          #ifdef F_SETCONFINED                   /* macOS */
+          case F_SETCONFINED:
+          #endif
+          #ifdef F_SETFD                         /* POSIX */
+          case F_SETFD:
+          #endif
+          #ifdef F_SETFL                         /* POSIX */
+          case F_SETFL:
+          #endif
+          #ifdef F_SETLEASE                      /* Linux */
+          case F_SETLEASE:
+          #endif
+          #ifdef F_SETNOSIGPIPE                  /* macOS */
+          case F_SETNOSIGPIPE:
+          #endif
+          #ifdef F_SETOWN                        /* POSIX */
+          case F_SETOWN:
+          #endif
+          #ifdef F_SETPIPE_SZ                    /* Linux */
+          case F_SETPIPE_SZ:
+          #endif
+          #ifdef F_SETPROTECTIONCLASS            /* macOS */
+          case F_SETPROTECTIONCLASS:
+          #endif
+          #ifdef F_SETSIG                        /* Linux */
+          case F_SETSIG:
+          #endif
+          #ifdef F_SINGLE_WRITER                 /* macOS */
+          case F_SINGLE_WRITER:
+          #endif
+            /* These actions take an 'int' argument.  */
+            {
+              int x = va_arg (arg, int);
+              result = fcntl (fd, action, x);
+            }
+            break;
+
+          default:
+            /* Other actions take a pointer argument.  */
+            {
+              void *p = va_arg (arg, void *);
+              result = fcntl (fd, action, p);
+            }
+            break;
+          }
+#else
+        errno = EINVAL;
+#endif
+        break;
+      }
+    }
+  va_end (arg);
+  return result;
+}
+
+static int
+rpl_fcntl_DUPFD (int fd, int target)
+{
+  int result;
+#if !HAVE_FCNTL
+  result = dupfd (fd, target, 0);
+#elif FCNTL_DUPFD_BUGGY || REPLACE_FCHDIR
+  /* Detect invalid target; needed for cygwin 1.5.x.  */
+  if (target < 0 || getdtablesize () <= target)
+    {
+      result = -1;
+      errno = EINVAL;
+    }
+  else
+    {
+      /* Haiku alpha 2 loses fd flags on original.  */
+      int flags = fcntl (fd, F_GETFD);
+      if (flags < 0)
+        result = -1;
+      else
+        {
+          result = fcntl (fd, F_DUPFD, target);
+          if (0 <= result && fcntl (fd, F_SETFD, flags) == -1)
+            {
+              int saved_errno = errno;
+              close (result);
+              result = -1;
+              errno = saved_errno;
+            }
+# if REPLACE_FCHDIR
+          if (0 <= result)
+            result = _gl_register_dup (fd, result);
+# endif
+        }
+    }
+#else
+  result = fcntl (fd, F_DUPFD, target);
+#endif
+  return result;
+}
+
+static int
+rpl_fcntl_DUPFD_CLOEXEC (int fd, int target)
+{
+  int result;
+#if !HAVE_FCNTL
+  result = dupfd (fd, target, O_CLOEXEC);
+#else /* HAVE_FCNTL */
+# if defined __NetBSD__ || defined __HAIKU__
+  /* On NetBSD 9.0, the system fcntl (fd, F_DUPFD_CLOEXEC, target)
+     has only the same effect as fcntl (fd, F_DUPFD, target).  */
+  /* On Haiku, the system fcntl (fd, F_DUPFD_CLOEXEC, target) sets
+     the FD_CLOEXEC flag on fd, not on target.  Therefore avoid the
+     system fcntl in this case.  */
+#  define have_dupfd_cloexec -1
+# else
+  /* Try the system call first, if the headers claim it exists
+     (that is, if GNULIB_defined_F_DUPFD_CLOEXEC is 0), since we
+     may be running with a glibc that has the macro but with an
+     older kernel that does not support it.  Cache the
+     information on whether the system call really works, but
+     avoid caching failure if the corresponding F_DUPFD fails
+     for any reason.  0 = unknown, 1 = yes, -1 = no.  */
+  static int have_dupfd_cloexec = GNULIB_defined_F_DUPFD_CLOEXEC ? -1 : 0;
+  if (0 <= have_dupfd_cloexec)
+    {
+      result = fcntl (fd, F_DUPFD_CLOEXEC, target);
+      if (0 <= result || errno != EINVAL)
+        {
+          have_dupfd_cloexec = 1;
+#  if REPLACE_FCHDIR
+          if (0 <= result)
+            result = _gl_register_dup (fd, result);
+#  endif
+        }
+      else
+        {
+          result = rpl_fcntl_DUPFD (fd, target);
+          if (result >= 0)
+            have_dupfd_cloexec = -1;
+        }
+    }
+  else
+# endif
+    result = rpl_fcntl_DUPFD (fd, target);
+  if (0 <= result && have_dupfd_cloexec == -1)
+    {
+      int flags = fcntl (result, F_GETFD);
+      if (flags < 0 || fcntl (result, F_SETFD, flags | FD_CLOEXEC) == -1)
+        {
+          int saved_errno = errno;
+          close (result);
+          errno = saved_errno;
+          result = -1;
+        }
+    }
+#endif /* HAVE_FCNTL */
+  return result;
+}
+
+#undef fcntl
+
+#ifdef __KLIBC__
+
+static int
+klibc_fcntl (int fd, int action, /* arg */...)
+{
+  va_list arg_ptr;
+  int arg;
+  struct stat sbuf;
+  int result;
+
+  va_start (arg_ptr, action);
+  arg = va_arg (arg_ptr, int);
+  result = fcntl (fd, action, arg);
+  /* EPERM for F_DUPFD, ENOTSUP for others */
+  if (result == -1 && (errno == EPERM || errno == ENOTSUP)
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+    {
+      ULONG ulMode;
+
+      switch (action)
+        {
+        case F_DUPFD:
+          /* Find available fd */
+          while (fcntl (arg, F_GETFL) != -1 || errno != EBADF)
+            arg++;
+
+          result = dup2 (fd, arg);
+          break;
+
+        /* Using underlying APIs is right ? */
+        case F_GETFD:
+          if (DosQueryFHState (fd, &ulMode))
+            break;
+
+          result = (ulMode & OPEN_FLAGS_NOINHERIT) ? FD_CLOEXEC : 0;
+          break;
+
+        case F_SETFD:
+          if (arg & ~FD_CLOEXEC)
+            break;
+
+          if (DosQueryFHState (fd, &ulMode))
+            break;
+
+          if (arg & FD_CLOEXEC)
+            ulMode |= OPEN_FLAGS_NOINHERIT;
+          else
+            ulMode &= ~OPEN_FLAGS_NOINHERIT;
+
+          /* Filter supported flags.  */
+          ulMode &= (OPEN_FLAGS_WRITE_THROUGH | OPEN_FLAGS_FAIL_ON_ERROR
+                     | OPEN_FLAGS_NO_CACHE | OPEN_FLAGS_NOINHERIT);
+
+          if (DosSetFHState (fd, ulMode))
+            break;
+
+          result = 0;
+          break;
+
+        case F_GETFL:
+          result = 0;
+          break;
+
+        case F_SETFL:
+          if (arg != 0)
+            break;
+
+          result = 0;
+          break;
+
+        default:
+          errno = EINVAL;
+          break;
+        }
+    }
+
+  va_end (arg_ptr);
+
+  return result;
+}
+
+#endif

gl/fcntl.in.h

@@ -0,0 +1,445 @@
+/* Like <fcntl.h>, but with non-working flags defined to 0.
+
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_system_fcntl_h
+/* Special invocation convention.  */
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
+# include <sys/stat.h>
+#endif
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
+# include <sys/stat.h>
+#endif
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+#define _@GUARD_PREFIX@_FCNTL_H
+
+#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
+# include <unistd.h>
+#endif
+
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#if @GNULIB_CREAT@
+# if @REPLACE_CREAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat rpl_creat
+#  endif
+_GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat _creat
+#  endif
+_GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (creat);
+#elif defined GNULIB_POSIXCHECK
+# undef creat
+/* Assume creat is always declared.  */
+_GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
+                 "use gnulib module creat for portability");
+#elif @GNULIB_MDA_CREAT@
+/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::creat always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat _creat
+#  endif
+/* Need to cast, because in mingw the last argument is 'int mode'.  */
+_GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (creat);
+#endif
+
+#if @GNULIB_FCNTL@
+# if @REPLACE_FCNTL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fcntl
+#   define fcntl rpl_fcntl
+#  endif
+_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
+_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
+#  if !GNULIB_defined_rpl_fcntl
+#   define GNULIB_defined_rpl_fcntl 1
+#  endif
+# else
+#  if !@HAVE_FCNTL@
+_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
+#   if !GNULIB_defined_fcntl
+#    define GNULIB_defined_fcntl 1
+#   endif
+#  endif
+_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
+# endif
+_GL_CXXALIASWARN (fcntl);
+#elif defined GNULIB_POSIXCHECK
+# undef fcntl
+# if HAVE_RAW_DECL_FCNTL
+_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
+                 "use gnulib module fcntl for portability");
+# endif
+#endif
+
+#if @GNULIB_OPEN@
+# if @REPLACE_OPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open rpl_open
+#  endif
+_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+# elif defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open _open
+#  endif
+_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+# else
+_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+# endif
+/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
+   default argument.  _GL_CXXALIASWARN does not work in this case.  */
+# if !defined __hpux
+_GL_CXXALIASWARN (open);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef open
+/* Assume open is always declared.  */
+_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
+                 "use gnulib module open for portability");
+#elif @GNULIB_MDA_OPEN@
+/* On native Windows, map 'open' to '_open', so that -loldnames is not
+   required.  In C++ with GNULIB_NAMESPACE, avoid differences between
+   platforms by defining GNULIB_NAMESPACE::open always.  */
+# if defined _WIN32 && !defined __CYGWIN__
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open _open
+#  endif
+_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+# else
+_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+# endif
+# if !defined __hpux
+_GL_CXXALIASWARN (open);
+# endif
+#endif
+
+#if @GNULIB_OPENAT@
+# if @REPLACE_OPENAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef openat
+#   define openat rpl_openat
+#  endif
+_GL_FUNCDECL_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# else
+#  if !@HAVE_OPENAT@
+_GL_FUNCDECL_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# endif
+_GL_CXXALIASWARN (openat);
+#elif defined GNULIB_POSIXCHECK
+# undef openat
+# if HAVE_RAW_DECL_OPENAT
+_GL_WARN_ON_USE (openat, "openat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+/* Fix up the FD_* macros, only known to be missing on mingw.  */
+
+#ifndef FD_CLOEXEC
+# define FD_CLOEXEC 1
+#endif
+
+/* Fix up the supported F_* macros.  Intentionally leave other F_*
+   macros undefined.  Only known to be missing on mingw.  */
+
+#ifndef F_DUPFD_CLOEXEC
+# define F_DUPFD_CLOEXEC 0x40000000
+/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise.  */
+# define GNULIB_defined_F_DUPFD_CLOEXEC 1
+#else
+# define GNULIB_defined_F_DUPFD_CLOEXEC 0
+#endif
+
+#ifndef F_DUPFD
+# define F_DUPFD 1
+#endif
+
+#ifndef F_GETFD
+# define F_GETFD 2
+#endif
+
+/* Fix up the O_* macros.  */
+
+/* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
+   to values outside 'int' range, so omit these misdefinitions.
+   But avoid namespace pollution on non-AIX systems.  */
+#ifdef _AIX
+# include <limits.h>
+# if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
+#  undef O_CLOEXEC
+# endif
+# if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
+#  undef O_NOFOLLOW
+# endif
+# if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
+#  undef O_TTY_INIT
+# endif
+#endif
+
+#if !defined O_DIRECT && defined O_DIRECTIO
+/* Tru64 spells it 'O_DIRECTIO'.  */
+# define O_DIRECT O_DIRECTIO
+#endif
+
+#if !defined O_CLOEXEC && defined O_NOINHERIT
+/* Mingw spells it 'O_NOINHERIT'.  */
+# define O_CLOEXEC O_NOINHERIT
+#endif
+
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags.  */
+# define GNULIB_defined_O_CLOEXEC 1
+#else
+# define GNULIB_defined_O_CLOEXEC 0
+#endif
+
+#ifndef O_DIRECT
+# define O_DIRECT 0
+#endif
+
+#ifndef O_DIRECTORY
+# define O_DIRECTORY 0
+#endif
+
+#ifndef O_DSYNC
+# define O_DSYNC 0
+#endif
+
+#ifndef O_EXEC
+# define O_EXEC O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_IGNORE_CTTY
+# define O_IGNORE_CTTY 0
+#endif
+
+#ifndef O_NDELAY
+# define O_NDELAY 0
+#endif
+
+#ifndef O_NOATIME
+# define O_NOATIME 0
+#endif
+
+#ifndef O_NONBLOCK
+# define O_NONBLOCK O_NDELAY
+#endif
+
+/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
+   value of O_NONBLOCK.  Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
+   or to 0 as fallback.  */
+#if @GNULIB_NONBLOCKING@
+# if O_NONBLOCK
+#  define GNULIB_defined_O_NONBLOCK 0
+# else
+#  define GNULIB_defined_O_NONBLOCK 1
+#  undef O_NONBLOCK
+#  define O_NONBLOCK 0x40000000
+# endif
+#endif
+
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+#ifndef O_NOLINK
+# define O_NOLINK 0
+#endif
+
+#ifndef O_NOLINKS
+# define O_NOLINKS 0
+#endif
+
+#ifndef O_NOTRANS
+# define O_NOTRANS 0
+#endif
+
+#ifndef O_RSYNC
+# define O_RSYNC 0
+#endif
+
+#ifndef O_SEARCH
+# define O_SEARCH O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_SYNC
+# define O_SYNC 0
+#endif
+
+#ifndef O_TTY_INIT
+# define O_TTY_INIT 0
+#endif
+
+#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+# undef O_ACCMODE
+# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+#endif
+
+/* For systems that distinguish between text and binary I/O.
+   O_BINARY is usually declared in fcntl.h  */
+#if !defined O_BINARY && defined _O_BINARY
+  /* For MSC-compatible compilers.  */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+
+#if defined __BEOS__ || defined __HAIKU__
+  /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect.  */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+
+#ifndef O_BINARY
+# define O_BINARY 0
+# define O_TEXT 0
+#endif
+
+/* Fix up the AT_* macros.  */
+
+/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
+   value exceeds INT_MAX, so its use as an int doesn't conform to the
+   C standard, and GCC and Sun C complain in some cases.  If the bug
+   is present, undef AT_FDCWD here, so it can be redefined below.  */
+#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
+# undef AT_FDCWD
+#endif
+
+/* Use the same bit pattern as Solaris 9, but with the proper
+   signedness.  The bit pattern is important, in case this actually is
+   Solaris with the above workaround.  */
+#ifndef AT_FDCWD
+# define AT_FDCWD (-3041965)
+#endif
+
+/* Use the same values as Solaris 9.  This shouldn't matter, but
+   there's no real reason to differ.  */
+#ifndef AT_SYMLINK_NOFOLLOW
+# define AT_SYMLINK_NOFOLLOW 4096
+#endif
+
+#ifndef AT_REMOVEDIR
+# define AT_REMOVEDIR 1
+#endif
+
+/* Solaris 9 lacks these two, so just pick unique values.  */
+#ifndef AT_SYMLINK_FOLLOW
+# define AT_SYMLINK_FOLLOW 2
+#endif
+
+#ifndef AT_EACCESS
+# define AT_EACCESS 4
+#endif
+
+/* Ignore this flag if not supported.  */
+#ifndef AT_NO_AUTOMOUNT
+# define AT_NO_AUTOMOUNT 0
+#endif
+
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif

gl/fd-hook.c

@@ -1,19 +1,19 @@
-/* Hook for making making file descriptor functions close(), ioctl() extensible.
+/* Hook for making file descriptor functions close(), ioctl() extensible.
-   Copyright (C) 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
+   This file is free software: you can redistribute it and/or modify
-   under the terms of the GNU General Public License as published
+   it under the terms of the GNU Lesser General Public License as
-   by the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/fd-hook.h

@@ -1,18 +1,18 @@
-/* Hook for making making file descriptor functions close(), ioctl() extensible.
+/* Hook for making file descriptor functions close(), ioctl() extensible.
-   Copyright (C) 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify it
+   This file is free software: you can redistribute it and/or modify
-   under the terms of the GNU General Public License as published
+   it under the terms of the GNU Lesser General Public License as
-   by the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 
 #ifndef FD_HOOK_H

gl/fflush.c

@@ -0,0 +1,233 @@
+/* fflush.c -- allow flushing input streams
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake. */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "freading.h"
+
+#include "stdio-impl.h"
+
+#undef fflush
+
+
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+/* GNU libc, BeOS, Haiku, Linux libc5 */
+
+/* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
+static void
+clear_ungetc_buffer_preserving_position (FILE *fp)
+{
+  if (fp->_flags & _IO_IN_BACKUP)
+    /* _IO_free_backup_area is a bit complicated.  Simply call fseek.  */
+    fseeko (fp, 0, SEEK_CUR);
+}
+
+#else
+
+/* Clear the stream's ungetc buffer.  May modify the value of ftello (fp).  */
+static void
+clear_ungetc_buffer (FILE *fp)
+{
+# if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+  if (HASUB (fp))
+    {
+      fp_->_p += fp_->_r;
+      fp_->_r = 0;
+    }
+# elif defined __EMX__              /* emx+gcc */
+  if (fp->_ungetc_count > 0)
+    {
+      fp->_ungetc_count = 0;
+      fp->_rcount = - fp->_rcount;
+    }
+# elif defined _IOERR               /* Minix, AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+  /* Nothing to do.  */
+# else                              /* other implementations */
+  fseeko (fp, 0, SEEK_CUR);
+# endif
+}
+
+#endif
+
+#if ! (defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1)
+/* GNU libc, BeOS, Haiku, Linux libc5 */
+
+# if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+
+static int
+disable_seek_optimization (FILE *fp)
+{
+  int saved_flags = fp_->_flags & (__SOPT | __SNPT);
+  fp_->_flags = (fp_->_flags & ~__SOPT) | __SNPT;
+  return saved_flags;
+}
+
+static void
+restore_seek_optimization (FILE *fp, int saved_flags)
+{
+  fp_->_flags = (fp_->_flags & ~(__SOPT | __SNPT)) | saved_flags;
+}
+
+# else
+
+static void
+update_fpos_cache (_GL_ATTRIBUTE_MAYBE_UNUSED FILE *fp,
+                   _GL_ATTRIBUTE_MAYBE_UNUSED off_t pos)
+{
+#  if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+#   if defined __CYGWIN__ || defined __ANDROID__
+  /* fp_->_offset is typed as an integer.  */
+  fp_->_offset = pos;
+#   else
+  /* fp_->_offset is an fpos_t.  */
+  /* Use a union, since on NetBSD, the compilation flags determine
+     whether fpos_t is typedef'd to off_t or a struct containing a
+     single off_t member.  */
+  union
+    {
+      fpos_t f;
+      off_t o;
+    } u;
+  u.o = pos;
+  fp_->_offset = u.f;
+#   endif
+  fp_->_flags |= __SOFF;
+#  endif
+}
+# endif
+#endif
+
+/* Flush all pending data on STREAM according to POSIX rules.  Both
+   output and seekable input streams are supported.  */
+int
+rpl_fflush (FILE *stream)
+{
+  /* When stream is NULL, POSIX and C99 only require flushing of "output
+     streams and update streams in which the most recent operation was not
+     input", and all implementations do this.
+
+     When stream is "an output stream or an update stream in which the most
+     recent operation was not input", POSIX and C99 requires that fflush
+     writes out any buffered data, and all implementations do this.
+
+     When stream is, however, an input stream or an update stream in
+     which the most recent operation was input, C99 specifies nothing,
+     and POSIX only specifies behavior if the stream is seekable.
+     mingw, in particular, drops the input buffer, leaving the file
+     descriptor positioned at the end of the input buffer. I.e. ftell
+     (stream) is lost.  We don't want to call the implementation's
+     fflush in this case.
+
+     We test ! freading (stream) here, rather than fwriting (stream), because
+     what we need to know is whether the stream holds a "read buffer", and on
+     mingw this is indicated by _IOREAD, regardless of _IOWRT.  */
+  if (stream == NULL || ! freading (stream))
+    return fflush (stream);
+
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
+
+  clear_ungetc_buffer_preserving_position (stream);
+
+  return fflush (stream);
+
+#else
+  {
+    /* What POSIX says:
+       1) About the file-position indicator (-> fseeko, ftello):
+          The file position indicator is incremented by fgetc() and decremented
+          by ungetc():
+          <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fgetc.html>
+            "... the fgetc() function shall ... advance the associated file
+             position indicator for the stream ..."
+          <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ungetc.html>
+            "The file-position indicator is decremented by each successful
+             call to ungetc()..."
+       2) fflush discards bytes pushed back by ungetc:
+          <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fflush.html>
+            "...any characters pushed back onto the stream by ungetc()
+             or ungetwc() that have not subsequently been read from the
+             stream shall be discarded..."
+          This implies implicitly: fflush does not change the file position
+          indicator.
+       3) Effects on the file descriptor, if the file descriptor is capable of
+          seeking:
+          <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fflush.html>
+            "...the file offset of the underlying open file description shall
+             be set to the file position of the stream..."  */
+
+    /* POSIX does not specify fflush behavior for non-seekable input
+       streams.  Some implementations purge unread data, some return
+       EBADF, some do nothing.  */
+    off_t pos = ftello (stream);
+    if (pos == -1)
+      {
+        errno = EBADF;
+        return EOF;
+      }
+
+    /* Clear the ungetc buffer.  */
+    clear_ungetc_buffer (stream);
+
+    /* To get here, we must be flushing a seekable input stream, so the
+       semantics of fpurge are now appropriate to clear the buffer.  To
+       avoid losing data, the lseek is also necessary.  */
+    {
+      int result = fpurge (stream);
+      if (result != 0)
+        return result;
+    }
+
+# if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+    /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+
+    {
+      /* Disable seek optimization for the next fseeko call.  This tells the
+         following fseeko call to seek to the desired position directly, rather
+         than to seek to a block-aligned boundary.  */
+      int saved_flags = disable_seek_optimization (stream);
+      int result = fseeko (stream, pos, SEEK_SET);
+
+      restore_seek_optimization (stream, saved_flags);
+      return result;
+    }
+
+# else
+
+    pos = lseek (fileno (stream), pos, SEEK_SET);
+    if (pos == -1)
+      return EOF;
+    /* After a successful lseek, update the file descriptor's position cache
+       in the stream.  */
+    update_fpos_cache (stream, pos);
+
+    return 0;
+
+# endif
+  }
+#endif
+}

gl/filename.h

@@ -0,0 +1,112 @@
+/* Basic filename support macros.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* From Paul Eggert and Jim Meyering.  */
+
+#ifndef _FILENAME_H
+#define _FILENAME_H
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Filename support.
+   ISSLASH(C)                  tests whether C is a directory separator
+                               character.
+   HAS_DEVICE(Filename)        tests whether Filename contains a device
+                               specification.
+   FILE_SYSTEM_PREFIX_LEN(Filename)  length of the device specification
+                                     at the beginning of Filename,
+                                     index of the part consisting of
+                                     alternating components and slashes.
+   FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+                               1 when a non-empty device specification
+                               can be followed by an empty or relative
+                               part,
+                               0 when a non-empty device specification
+                               must be followed by a slash,
+                               0 when device specification don't exist.
+   IS_ABSOLUTE_FILE_NAME(Filename)
+                               tests whether Filename is independent of
+                               any notion of "current directory".
+   IS_RELATIVE_FILE_NAME(Filename)
+                               tests whether Filename may be concatenated
+                               to a directory filename.
+   Note: On native Windows, OS/2, DOS, "c:" is neither an absolute nor a
+   relative file name!
+   IS_FILE_NAME_WITH_DIR(Filename)  tests whether Filename contains a device
+                                    or directory specification.
+ */
+#if defined _WIN32 || defined __CYGWIN__ \
+    || defined __EMX__ || defined __MSDOS__ || defined __DJGPP__
+  /* Native Windows, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+  /* Internal macro: Tests whether a character is a drive letter.  */
+# define _IS_DRIVE_LETTER(C) \
+    (((C) >= 'A' && (C) <= 'Z') || ((C) >= 'a' && (C) <= 'z'))
+  /* Help the compiler optimizing it.  This assumes ASCII.  */
+# undef _IS_DRIVE_LETTER
+# define _IS_DRIVE_LETTER(C) \
+    (((unsigned int) (C) | ('a' - 'A')) - 'a' <= 'z' - 'a')
+# define HAS_DEVICE(Filename) \
+    (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':')
+# define FILE_SYSTEM_PREFIX_LEN(Filename) (HAS_DEVICE (Filename) ? 2 : 0)
+# ifdef __CYGWIN__
+#  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# else
+   /* On native Windows, OS/2, DOS, the system has the notion of a
+      "current directory" on each drive.  */
+#  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
+# endif
+# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+#  define IS_ABSOLUTE_FILE_NAME(Filename) \
+     ISSLASH ((Filename)[FILE_SYSTEM_PREFIX_LEN (Filename)])
+# else
+#  define IS_ABSOLUTE_FILE_NAME(Filename) \
+     (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename))
+# endif
+# define IS_RELATIVE_FILE_NAME(Filename) \
+    (! (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename)))
+# define IS_FILE_NAME_WITH_DIR(Filename) \
+    (strchr ((Filename), '/') != NULL || strchr ((Filename), '\\') != NULL \
+     || HAS_DEVICE (Filename))
+#else
+  /* Unix */
+# define ISSLASH(C) ((C) == '/')
+# define HAS_DEVICE(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_PREFIX_LEN(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# define IS_ABSOLUTE_FILE_NAME(Filename) ISSLASH ((Filename)[0])
+# define IS_RELATIVE_FILE_NAME(Filename) (! ISSLASH ((Filename)[0]))
+# define IS_FILE_NAME_WITH_DIR(Filename) (strchr ((Filename), '/') != NULL)
+#endif
+
+/* Deprecated macros.  For backward compatibility with old users of the
+   'filename' module.  */
+#define IS_ABSOLUTE_PATH IS_ABSOLUTE_FILE_NAME
+#define IS_PATH_WITH_DIR IS_FILE_NAME_WITH_DIR
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FILENAME_H */

gl/float+.h

@@ -1,19 +1,19 @@
 /* Supplemental information about the floating-point formats.
-   Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _FLOATPLUS_H
 #define _FLOATPLUS_H

gl/float.c

@@ -1,19 +1,19 @@
 /* Auxiliary definitions for <float.h>.
-   Copyright (C) 2011-2013 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

gl/float.in.h

@@ -1,19 +1,19 @@
 /* A correct <float.h>.
 
-   Copyright (C) 2007-2013 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_FLOAT_H
 
@@ -62,8 +62,8 @@
 
 /* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
    precision in the compiler but 64 bits of precision at runtime.  See
-   <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>.  */
+   <https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>.  */
-#if defined __i386__ && defined __FreeBSD__
+#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
 /* Number of mantissa units, in base FLT_RADIX.  */
 # undef LDBL_MANT_DIG
 # define LDBL_MANT_DIG   64
@@ -81,7 +81,7 @@
 # define LDBL_MAX_EXP    16384
 /* Minimum positive normalized number.  */
 # undef LDBL_MIN
-# define LDBL_MIN        3.3621031431120935E-4932L /* = 0x1p-16382L */
+# define LDBL_MIN        3.362103143112093506262677817321752E-4932L /* = 0x1p-16382L */
 /* Maximum representable finite number.  */
 # undef LDBL_MAX
 /* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
@@ -93,11 +93,14 @@
      extern const long double LDBL_MAX;
 
    Unfortunately, this is not a constant expression.  */
+# if !GNULIB_defined_long_double_union
 union gl_long_double_union
   {
     struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
     long double ld;
   };
+#  define GNULIB_defined_long_double_union 1
+# endif
 extern const union gl_long_double_union gl_LDBL_MAX;
 # define LDBL_MAX (gl_LDBL_MAX.ld)
 /* Minimum e such that 10^e is in the range of normalized numbers.  */
@@ -146,11 +149,14 @@ extern const union gl_long_double_union gl_LDBL_MAX;
 
    Unfortunately, this is not a constant expression, and the latter expression
    does not work well when GCC is optimizing..  */
+# if !GNULIB_defined_long_double_union
 union gl_long_double_union
   {
     struct { double hi; double lo; } dd;
     long double ld;
   };
+#  define GNULIB_defined_long_double_union 1
+# endif
 extern const union gl_long_double_union gl_LDBL_MAX;
 # define LDBL_MAX (gl_LDBL_MAX.ld)
 #endif

gl/floor.c

@@ -1,18 +1,18 @@
 /* Round towards negative infinity.
-   Copyright (C) 2007, 2010-2013 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation, either version 3 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
@@ -44,7 +44,7 @@
 
 /* MSVC with option -fp:strict refuses to compile constant initializers that
    contain floating-point operations.  Pacify this compiler.  */
-#ifdef _MSC_VER
+#if defined _MSC_VER && !defined __clang__
 # pragma fenv_access (off)
 #endif
 

gl/floorf.c

@@ -1,18 +1,18 @@
 /* Round towards negative infinity.
-   Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation, either version 3 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 

gl/fopen.c

@@ -0,0 +1,229 @@
+/* Open a stream to a file.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* If the user's config.h happens to include <stdio.h>, let it include only
+   the system's <stdio.h> here, so that orig_fopen doesn't recurse to
+   rpl_fopen.  */
+#define _GL_ALREADY_INCLUDING_STDIO_H
+#include <config.h>
+
+/* Get the original definition of fopen.  It might be defined as a macro.  */
+#include <stdio.h>
+#undef _GL_ALREADY_INCLUDING_STDIO_H
+
+static FILE *
+orig_fopen (const char *filename, const char *mode)
+{
+  return fopen (filename, mode);
+}
+
+/* Specification.  */
+/* Write "stdio.h" here, not <stdio.h>, otherwise OSF/1 5.1 DTK cc eliminates
+   this include because of the preliminary #include <stdio.h> above.  */
+#include "stdio.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+FILE *
+rpl_fopen (const char *filename, const char *mode)
+{
+  int open_direction;
+  int open_flags;
+#if GNULIB_FOPEN_GNU
+  bool open_flags_gnu;
+# define BUF_SIZE 80
+  char fdopen_mode_buf[BUF_SIZE + 1];
+#endif
+
+#if defined _WIN32 && ! defined __CYGWIN__
+  if (strcmp (filename, "/dev/null") == 0)
+    filename = "NUL";
+#endif
+
+  /* Parse the mode.  */
+  open_direction = 0;
+  open_flags = 0;
+#if GNULIB_FOPEN_GNU
+  open_flags_gnu = false;
+#endif
+  {
+    const char *p = mode;
+#if GNULIB_FOPEN_GNU
+    char *q = fdopen_mode_buf;
+#endif
+
+    for (; *p != '\0'; p++)
+      {
+        switch (*p)
+          {
+          case 'r':
+            open_direction = O_RDONLY;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'w':
+            open_direction = O_WRONLY;
+            open_flags |= O_CREAT | O_TRUNC;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'a':
+            open_direction = O_WRONLY;
+            open_flags |= O_CREAT | O_APPEND;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case 'b':
+            /* While it is non-standard, O_BINARY is guaranteed by
+               gnulib <fcntl.h>.  We can also assume that orig_fopen
+               supports the 'b' flag.  */
+            open_flags |= O_BINARY;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+          case '+':
+            open_direction = O_RDWR;
+#if GNULIB_FOPEN_GNU
+            if (q < fdopen_mode_buf + BUF_SIZE)
+              *q++ = *p;
+#endif
+            continue;
+#if GNULIB_FOPEN_GNU
+          case 'x':
+            open_flags |= O_EXCL;
+            open_flags_gnu = true;
+            continue;
+          case 'e':
+            open_flags |= O_CLOEXEC;
+            open_flags_gnu = true;
+            continue;
+#endif
+          default:
+            break;
+          }
+#if GNULIB_FOPEN_GNU
+        /* The rest of the mode string can be a platform-dependent extension.
+           Copy it unmodified.  */
+        {
+          size_t len = strlen (p);
+          if (len > fdopen_mode_buf + BUF_SIZE - q)
+            len = fdopen_mode_buf + BUF_SIZE - q;
+          memcpy (q, p, len);
+          q += len;
+        }
+#endif
+        break;
+      }
+#if GNULIB_FOPEN_GNU
+    *q = '\0';
+#endif
+  }
+
+#if FOPEN_TRAILING_SLASH_BUG
+  /* Fail if the mode requires write access and the filename ends in a slash,
+     as POSIX says such a filename must name a directory
+     <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
+       "A pathname that contains at least one non-<slash> character and that
+        ends with one or more trailing <slash> characters shall not be resolved
+        successfully unless the last pathname component before the trailing
+        <slash> characters names an existing directory"
+     If the named file already exists as a directory, then if a mode that
+     requires write access is specified, fopen() must fail because POSIX
+     <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html>
+     says that it fails with errno = EISDIR in this case.
+     If the named file does not exist or does not name a directory, then
+     fopen() must fail since the file does not contain a '.' directory.  */
+  {
+    size_t len = strlen (filename);
+    if (len > 0 && filename[len - 1] == '/')
+      {
+        int fd;
+        struct stat statbuf;
+        FILE *fp;
+
+        if (open_direction != O_RDONLY)
+          {
+            errno = EISDIR;
+            return NULL;
+          }
+
+        fd = open (filename, open_direction | open_flags,
+                   S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+        if (fd < 0)
+          return NULL;
+
+        if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+          {
+            close (fd);
+            errno = ENOTDIR;
+            return NULL;
+          }
+
+# if GNULIB_FOPEN_GNU
+        fp = fdopen (fd, fdopen_mode_buf);
+# else
+        fp = fdopen (fd, mode);
+# endif
+        if (fp == NULL)
+          {
+            int saved_errno = errno;
+            close (fd);
+            errno = saved_errno;
+          }
+        return fp;
+      }
+  }
+#endif
+
+#if GNULIB_FOPEN_GNU
+  if (open_flags_gnu)
+    {
+      int fd;
+      FILE *fp;
+
+      fd = open (filename, open_direction | open_flags,
+                 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+      if (fd < 0)
+        return NULL;
+
+      fp = fdopen (fd, fdopen_mode_buf);
+      if (fp == NULL)
+        {
+          int saved_errno = errno;
+          close (fd);
+          errno = saved_errno;
+        }
+      return fp;
+    }
+#endif
+
+  return orig_fopen (filename, mode);
+}

gl/fpurge.c

@@ -0,0 +1,150 @@
+/* Flushing buffers of a FILE stream.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#if HAVE___FPURGE                   /* glibc >= 2.2, Haiku, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.10, Android API >= 23, musl libc */
+# if HAVE_STDIO_EXT_H
+#  include <stdio_ext.h>
+# endif
+#endif
+#include <stdlib.h>
+
+#include "stdio-impl.h"
+
+int
+fpurge (FILE *fp)
+{
+#if HAVE___FPURGE                   /* glibc >= 2.2, Haiku, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.10, Android API >= 23, musl libc */
+
+  __fpurge (fp);
+  /* The __fpurge function does not have a return value.  */
+  return 0;
+
+#elif HAVE_FPURGE                   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin >= 1.7 */
+
+  /* Call the system's fpurge function.  */
+# undef fpurge
+# if !HAVE_DECL_FPURGE
+  extern int fpurge (FILE *);
+# endif
+  int result = fpurge (fp);
+# if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+  if (result == 0)
+    /* Correct the invariants that fpurge broke.
+       <stdio.h> on BSD systems says:
+         "The following always hold: if _flags & __SRD, _w is 0."
+       If this invariant is not fulfilled and the stream is read-write but
+       currently reading, subsequent putc or fputc calls will write directly
+       into the buffer, although they shouldn't be allowed to.  */
+    if ((fp_->_flags & __SRD) != 0)
+      fp_->_w = 0;
+# endif
+  return result;
+
+#else
+
+  /* Most systems provide FILE as a struct and the necessary bitmask in
+     <stdio.h>, because they need it for implementing getc() and putc() as
+     fast macros.  */
+# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
+  fp->_IO_read_end = fp->_IO_read_ptr;
+  fp->_IO_write_ptr = fp->_IO_write_base;
+  /* Avoid memory leak when there is an active ungetc buffer.  */
+  if (fp->_IO_save_base != NULL)
+    {
+      free (fp->_IO_save_base);
+      fp->_IO_save_base = NULL;
+    }
+  return 0;
+# elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+  fp_->_p = fp_->_bf._base;
+  fp_->_r = 0;
+  fp_->_w = ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
+             ? fp_->_bf._size
+             : 0);
+  /* Avoid memory leak when there is an active ungetc buffer.  */
+  if (fp_ub._base != NULL)
+    {
+      if (fp_ub._base != fp_->_ubuf)
+        free (fp_ub._base);
+      fp_ub._base = NULL;
+    }
+  return 0;
+# elif defined __EMX__              /* emx+gcc */
+  fp->_ptr = fp->_buffer;
+  fp->_rcount = 0;
+  fp->_wcount = 0;
+  fp->_ungetc_count = 0;
+  return 0;
+# elif defined __minix              /* Minix */
+  fp->_ptr = fp->_buf;
+  if (fp->_ptr != NULL)
+    fp->_count = 0;
+  return 0;
+# elif defined _IOERR               /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+  fp_->_ptr = fp_->_base;
+  if (fp_->_ptr != NULL)
+    fp_->_cnt = 0;
+  return 0;
+# elif defined __UCLIBC__           /* uClibc */
+#  ifdef __STDIO_BUFFERS
+  if (fp->__modeflags & __FLAG_WRITING)
+    fp->__bufpos = fp->__bufstart;
+  else if (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING))
+    fp->__bufpos = fp->__bufread;
+#  endif
+  return 0;
+# elif defined __QNX__              /* QNX */
+  fp->_Rback = fp->_Back + sizeof (fp->_Back);
+  fp->_Rsave = NULL;
+  if (fp->_Mode & 0x2000 /* _MWRITE */)
+    /* fp->_Buf <= fp->_Next <= fp->_Wend */
+    fp->_Next = fp->_Buf;
+  else
+    /* fp->_Buf <= fp->_Next <= fp->_Rend */
+    fp->_Rend = fp->_Next;
+  return 0;
+# elif defined __MINT__             /* Atari FreeMiNT */
+  if (fp->__pushed_back)
+    {
+      fp->__bufp = fp->__pushback_bufp;
+      fp->__pushed_back = 0;
+    }
+  /* Preserve the current file position.  */
+  if (fp->__target != -1)
+    fp->__target += fp->__bufp - fp->__buffer;
+  fp->__bufp = fp->__buffer;
+  /* Nothing in the buffer, next getc is nontrivial.  */
+  fp->__get_limit = fp->__bufp;
+  /* Nothing in the buffer, next putc is nontrivial.  */
+  fp->__put_limit = fp->__buffer;
+  return 0;
+# elif defined EPLAN9               /* Plan9 */
+  fp->rp = fp->wp = fp->lp = fp->buf;
+  return 0;
+# else
+#  error "Please port gnulib fpurge.c to your platform! Look at the definitions of fflush, setvbuf and ungetc on your system, then report this to bug-gnulib."
+# endif
+
+#endif
+}

gl/freading.c

@@ -0,0 +1,76 @@
+/* Retrieve information about a FILE stream.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "freading.h"
+
+#include "stdio-impl.h"
+
+/* Don't use glibc's __freading function in glibc < 2.7, see
+   <https://sourceware.org/bugzilla/show_bug.cgi?id=4359>  */
+#if !(HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)))
+
+bool
+freading (FILE *fp)
+{
+  /* Most systems provide FILE as a struct and the necessary bitmask in
+     <stdio.h>, because they need it for implementing getc() and putc() as
+     fast macros.  */
+# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
+  return ((fp->_flags & _IO_NO_WRITES) != 0
+          || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+              && fp->_IO_read_base != NULL));
+# elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin < 1.7.34, Minix 3, Android */
+  return (fp_->_flags & __SRD) != 0;
+# elif defined __EMX__               /* emx+gcc */
+  return (fp->_flags & _IOREAD) != 0;
+# elif defined __minix               /* Minix */
+  return (fp->_flags & _IOREADING) != 0;
+# elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+#  if defined __sun                  /* Solaris */
+  return (fp_->_flag & _IOREAD) != 0 && (fp_->_flag & _IOWRT) == 0;
+#  else
+  return (fp_->_flag & _IOREAD) != 0;
+#  endif
+# elif defined __UCLIBC__            /* uClibc */
+  return (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) != 0;
+# elif defined __QNX__               /* QNX */
+  return ((fp->_Mode & 0x2 /* _MOPENW */) == 0
+          || (fp->_Mode & 0x1000 /* _MREAD */) != 0);
+# elif defined __MINT__              /* Atari FreeMiNT */
+  if (!fp->__mode.__write)
+    return 1;
+  if (!fp->__mode.__read)
+    return 0;
+#  ifdef _IO_CURRENTLY_GETTING /* Flag added on 2009-02-28 */
+  return (fp->__flags & _IO_CURRENTLY_GETTING) != 0;
+#  else
+  return (fp->__buffer < fp->__get_limit /*|| fp->__bufp == fp->__put_limit ??*/);
+#  endif
+# elif defined EPLAN9                /* Plan9 */
+  if (fp->state == 0 /* CLOSED */ || fp->state == 4 /* WR */)
+    return 0;
+  return (fp->state == 3 /* RD */ && (fp->bufl == 0 || fp->rp < fp->wp));
+# else
+#  error "Please port gnulib freading.c to your platform!"
+# endif
+}
+
+#endif

gl/freading.h

@@ -0,0 +1,54 @@
+/* Retrieve information about a FILE stream.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+
+/* Return true if the stream STREAM is opened read-only, or if the
+   last operation on the stream was a read operation.  Return false if
+   the stream is opened write-only or append-only, or if it supports
+   writing and there is no current read operation (such as fgetc).
+
+   freading and fwriting will never both be true.  If STREAM supports
+   both reads and writes, then:
+     - both freading and fwriting might be false when the stream is first
+       opened, after read encounters EOF, or after fflush,
+     - freading might be false or true and fwriting might be false
+       after repositioning (such as fseek, fsetpos, or rewind),
+   depending on the underlying implementation.
+
+   STREAM must not be wide-character oriented.  */
+
+#if HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+/* Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.34, Android API >= 29, not glibc >= 2.2, but glibc >= 2.7, or musl libc  */
+
+# if HAVE_STDIO_EXT_H
+#  include <stdio_ext.h>
+# endif
+# define freading(stream) (__freading (stream) != 0)
+
+#else
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+extern bool freading (FILE *stream) _GL_ATTRIBUTE_PURE;
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif

gl/free.c

@@ -0,0 +1,53 @@
+/* Make free() preserve errno.
+
+   Copyright (C) 2003, 2006, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+/* A function definition is only needed if HAVE_FREE_POSIX is not defined.  */
+#if !HAVE_FREE_POSIX
+
+# include <errno.h>
+
+void
+rpl_free (void *p)
+# undef free
+{
+# if defined __GNUC__ && !defined __clang__
+  /* An invalid GCC optimization
+     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98396>
+     would optimize away the assignments in the code below, when link-time
+     optimization (LTO) is enabled.  Make the code more complicated, so that
+     GCC does not grok how to optimize it.  */
+  int err[2];
+  err[0] = errno;
+  err[1] = errno;
+  errno = 0;
+  free (p);
+  errno = err[errno == 0];
+# else
+  int err = errno;
+  free (p);
+  errno = err;
+# endif
+}
+
+#endif

gl/fseek.c

@@ -0,0 +1,30 @@
+/* An fseek() function that, together with fflush(), is POSIX compliant.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+/* Get off_t.  */
+#include <unistd.h>
+
+int
+fseek (FILE *fp, long offset, int whence)
+{
+  /* Use the replacement fseeko function with all its workarounds.  */
+  return fseeko (fp, (off_t)offset, whence);
+}

gl/fseeko.c

@@ -0,0 +1,164 @@
+/* An fseeko() function that, together with fflush(), is POSIX compliant.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+/* Get off_t, lseek, _POSIX_VERSION.  */
+#include <unistd.h>
+
+#include "stdio-impl.h"
+
+int
+fseeko (FILE *fp, off_t offset, int whence)
+#undef fseeko
+#if !HAVE_FSEEKO
+# undef fseek
+# define fseeko fseek
+#endif
+#if _GL_WINDOWS_64_BIT_OFF_T
+# undef fseeko
+# if HAVE__FSEEKI64 && HAVE_DECL__FSEEKI64 /* msvc, mingw since msvcrt8.0, mingw64 */
+#  define fseeko _fseeki64
+# else /* mingw before msvcrt8.0 */
+#  define fseeko fseeko64
+# endif
+#endif
+{
+#if LSEEK_PIPE_BROKEN
+  /* mingw gives bogus answers rather than failure on non-seekable files.  */
+  if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
+    return EOF;
+#endif
+
+  /* These tests are based on fpurge.c.  */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
+  if (fp->_IO_read_end == fp->_IO_read_ptr
+      && fp->_IO_write_ptr == fp->_IO_write_base
+      && fp->_IO_save_base == NULL)
+#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+# if defined __SL64 && defined __SCLE /* Cygwin */
+  if ((fp->_flags & __SL64) == 0)
+    {
+      /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
+         mode; but has an fseeko that requires 64-bit mode.  */
+      FILE *tmp = fopen ("/dev/null", "r");
+      if (!tmp)
+        return -1;
+      fp->_flags |= __SL64;
+      fp->_seek64 = tmp->_seek64;
+      fclose (tmp);
+    }
+# endif
+  if (fp_->_p == fp_->_bf._base
+      && fp_->_r == 0
+      && fp_->_w == ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
+                     ? fp_->_bf._size
+                     : 0)
+      && fp_ub._base == NULL)
+#elif defined __EMX__               /* emx+gcc */
+  if (fp->_ptr == fp->_buffer
+      && fp->_rcount == 0
+      && fp->_wcount == 0
+      && fp->_ungetc_count == 0)
+#elif defined __minix               /* Minix */
+  if (fp_->_ptr == fp_->_buf
+      && (fp_->_ptr == NULL || fp_->_count == 0))
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+  if (fp_->_ptr == fp_->_base
+      && (fp_->_ptr == NULL || fp_->_cnt == 0))
+#elif defined __UCLIBC__            /* uClibc */
+  if (((fp->__modeflags & __FLAG_WRITING) == 0
+       || fp->__bufpos == fp->__bufstart)
+      && ((fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) == 0
+          || fp->__bufpos == fp->__bufread))
+#elif defined __QNX__               /* QNX */
+  if ((fp->_Mode & 0x2000 /* _MWRITE */ ? fp->_Next == fp->_Buf : fp->_Next == fp->_Rend)
+      && fp->_Rback == fp->_Back + sizeof (fp->_Back)
+      && fp->_Rsave == NULL)
+#elif defined __MINT__              /* Atari FreeMiNT */
+  if (fp->__bufp == fp->__buffer
+      && fp->__get_limit == fp->__bufp
+      && fp->__put_limit == fp->__bufp
+      && !fp->__pushed_back)
+#elif defined EPLAN9                /* Plan9 */
+  if (fp->rp == fp->buf
+      && fp->wp == fp->buf)
+#elif FUNC_FFLUSH_STDIN < 0 && 200809 <= _POSIX_VERSION
+  /* Cross-compiling to some other system advertising conformance to
+     POSIX.1-2008 or later.  Assume fseeko and fflush work as advertised.
+     If this assumption is incorrect, please report the bug to
+     bug-gnulib.  */
+  if (0)
+#else
+  #error "Please port gnulib fseeko.c to your platform! Look at the code in fseeko.c, then report this to bug-gnulib."
+#endif
+    {
+      /* We get here when an fflush() call immediately preceded this one (or
+         if ftell() has created buffers but no I/O has occurred on a
+         newly-opened stream).  We know there are no buffers.  */
+      off_t pos = lseek (fileno (fp), offset, whence);
+      if (pos == -1)
+        {
+#if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+          /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+          fp_->_flags &= ~__SOFF;
+#endif
+          return -1;
+        }
+
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+      /* GNU libc, BeOS, Haiku, Linux libc5 */
+      fp->_flags &= ~_IO_EOF_SEEN;
+      fp->_offset = pos;
+#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+      /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+# if defined __CYGWIN__ || (defined __NetBSD__ && __NetBSD_Version__ >= 600000000) || defined __minix
+      /* fp_->_offset is typed as an integer.  */
+      fp_->_offset = pos;
+# else
+      /* fp_->_offset is an fpos_t.  */
+      {
+        /* Use a union, since on NetBSD, the compilation flags
+           determine whether fpos_t is typedef'd to off_t or a struct
+           containing a single off_t member.  */
+        union
+          {
+            fpos_t f;
+            off_t o;
+          } u;
+        u.o = pos;
+        fp_->_offset = u.f;
+      }
+# endif
+      fp_->_flags |= __SOFF;
+      fp_->_flags &= ~__SEOF;
+#elif defined __EMX__               /* emx+gcc */
+      fp->_flags &= ~_IOEOF;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
+      fp_->_flag &= ~_IOEOF;
+#elif defined __MINT__              /* Atari FreeMiNT */
+      fp->__offset = pos;
+      fp->__eof = 0;
+#endif
+      return 0;
+    }
+  return fseeko (fp, offset, whence);
+}

gl/fstat.c

@@ -0,0 +1,94 @@
+/* fstat() replacement.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+   the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to
+   rpl_fstat.  */
+#define __need_system_sys_stat_h
+#include <config.h>
+
+/* Get the original definition of fstat.  It might be defined as a macro.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#undef __need_system_sys_stat_h
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WINDOWS_NATIVE
+#endif
+
+#if !defined WINDOWS_NATIVE
+
+static int
+orig_fstat (int fd, struct stat *buf)
+{
+  return fstat (fd, buf);
+}
+
+#endif
+
+/* Specification.  */
+#ifdef __osf__
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+   eliminates this include because of the preliminary #include <sys/stat.h>
+   above.  */
+# include "sys/stat.h"
+#else
+# include <sys/stat.h>
+#endif
+
+#include "stat-time.h"
+
+#include <errno.h>
+#include <unistd.h>
+#ifdef WINDOWS_NATIVE
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+# include "stat-w32.h"
+#endif
+
+int
+rpl_fstat (int fd, struct stat *buf)
+{
+#if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY
+  /* Handle the case when rpl_open() used a dummy file descriptor to work
+     around an open() that can't normally visit directories.  */
+  const char *name = _gl_directory_name (fd);
+  if (name != NULL)
+    return stat (name, buf);
+#endif
+
+#ifdef WINDOWS_NATIVE
+  /* Fill the fields ourselves, because the original fstat function returns
+     values for st_atime, st_mtime, st_ctime that depend on the current time
+     zone.  See
+     <https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html>  */
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+
+  if (h == INVALID_HANDLE_VALUE)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  return _gl_fstat_by_handle (h, NULL, buf);
+#else
+  return stat_time_normalize (orig_fstat (fd, buf), buf);
+#endif
+}

gl/fsusage.c

@@ -1,20 +1,20 @@
 /* fsusage.c -- return space usage of mounted file systems
 
-   Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2013 Free Software
+   Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2023 Free Software
    Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation, either version 3 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
@@ -43,22 +43,10 @@
 # if HAVE_SYS_FS_S5PARAM_H      /* Fujitsu UXP/V */
 #  include <sys/fs/s5param.h>
 # endif
-# if defined HAVE_SYS_FILSYS_H && !defined _CRAY
-#  include <sys/filsys.h>       /* SVR2 */
-# endif
 # if HAVE_SYS_STATFS_H
 #  include <sys/statfs.h>
 # endif
-# if HAVE_DUSTAT_H              /* AIX PS/2 */
-#  include <sys/dustat.h>
 #endif
-# include "full-read.h"
-#endif
-
-/* The results of open() in this file are not used with fchdir,
-   therefore save some unnecessary work in fchdir.c.  */
-#undef open
-#undef close
 
 /* Many space usage primitives use all 1 bits to denote a value that is
    not applicable or unknown.  Propagate this information by returning
@@ -143,7 +131,6 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
       fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (vfsd.f_bavail) != 0;
       fsp->fsu_files = PROPAGATE_ALL_ONES (vfsd.f_files);
       fsp->fsu_ffree = PROPAGATE_ALL_ONES (vfsd.f_ffree);
-      fsp->fsu_favail = PROPAGATE_ALL_ONES (vfsd.f_favail);
       return 0;
     }
 
@@ -161,58 +148,6 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
                         ? PROPAGATE_ALL_ONES (fsd.f_frsize)
                         : PROPAGATE_ALL_ONES (fsd.f_bsize));
 
-#elif defined STAT_STATFS2_FS_DATA      /* Ultrix */
-
-  struct fs_data fsd;
-
-  if (statfs (file, &fsd) != 1)
-    return -1;
-
-  fsp->fsu_blocksize = 1024;
-  fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
-  fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
-  fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
-  fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
-  fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
-  fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
-  fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
-
-#elif defined STAT_READ_FILSYS          /* SVR2 */
-# ifndef SUPERBOFF
-#  define SUPERBOFF (SUPERB * 512)
-# endif
-
-  struct filsys fsd;
-  int fd;
-
-  if (! disk)
-    {
-      errno = 0;
-      return -1;
-    }
-
-  fd = open (disk, O_RDONLY);
-  if (fd < 0)
-    return -1;
-  lseek (fd, (off_t) SUPERBOFF, 0);
-  if (full_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
-    {
-      close (fd);
-      return -1;
-    }
-  close (fd);
-
-  fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
-  fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
-  fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
-  fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
-  fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
-  fsp->fsu_files = (fsd.s_isize == -1
-                    ? UINTMAX_MAX
-                    : (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
-  fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
-  fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.s_tinode);
-
 #elif defined STAT_STATFS3_OSF1         /* OSF/1 */
 
   struct statfs fsd;
@@ -266,12 +201,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
 
   fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
 
-#elif defined STAT_STATFS4              /* SVR3, Dynix, old Irix, old AIX, \
+#elif defined STAT_STATFS4              /* SVR3, old Irix */
-                                           Dolphin */
-
-# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
-#  define f_bavail f_bfree
-# endif
 
   struct statfs fsd;
 
@@ -281,11 +211,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
   /* Empirically, the block counts on most SVR3 and SVR3-derived
      systems seem to always be in terms of 512-byte blocks,
      no matter what value f_bsize has.  */
-# if _AIX || defined _CRAY
-   fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
-# else
    fsp->fsu_blocksize = 512;
-# endif
 
 #endif
 
@@ -299,38 +225,9 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
   fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
   fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
   fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
-  fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.f_ffree);
 
 #endif
 
   (void) disk;  /* avoid argument-unused warning */
   return 0;
 }
-
-#if defined _AIX && defined _I386
-/* AIX PS/2 does not supply statfs.  */
-
-int
-statfs (char *file, struct statfs *fsb)
-{
-  struct stat stats;
-  struct dustat fsd;
-
-  if (stat (file, &stats) != 0)
-    return -1;
-  if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
-    return -1;
-  fsb->f_type   = 0;
-  fsb->f_bsize  = fsd.du_bsize;
-  fsb->f_blocks = fsd.du_fsize - fsd.du_isize;
-  fsb->f_bfree  = fsd.du_tfree;
-  fsb->f_bavail = fsd.du_tfree;
-  fsb->f_files  = (fsd.du_isize - 2) * fsd.du_inopb;
-  fsb->f_ffree  = fsd.du_tinode;
-  fsb->f_favail  = fsd.du_tinode;
-  fsb->f_fsid.val[0] = fsd.du_site;
-  fsb->f_fsid.val[1] = fsd.du_pckno;
-  return 0;
-}
-
-#endif /* _AIX && _I386 */

gl/fsusage.h

@@ -1,20 +1,20 @@
 /* fsusage.h -- declarations for file system space usage info
 
-   Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2013 Free Software
+   Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation, either version 3 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Space usage statistics for a file system.  Blocks are 512-byte. */
 
@@ -22,7 +22,6 @@
 # define FSUSAGE_H_
 
 # include <stdint.h>
-# include <stdbool.h>
 
 struct fs_usage
 {
@@ -32,8 +31,7 @@ struct fs_usage
   uintmax_t fsu_bavail;         /* Free blocks available to non-superuser. */
   bool fsu_bavail_top_bit_set;  /* 1 if fsu_bavail represents a value < 0.  */
   uintmax_t fsu_files;          /* Total file nodes. */
-  uintmax_t fsu_ffree;          /* Free file nodes to superuser. */
+  uintmax_t fsu_ffree;          /* Free file nodes. */
-  uintmax_t fsu_favail;         /* Free file nodes to non-superuser. */
 };
 
 int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp);

gl/ftell.c

@@ -0,0 +1,37 @@
+/* An ftell() function that works around platform bugs.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <limits.h>
+
+long
+ftell (FILE *fp)
+{
+  /* Use the replacement ftello function with all its workarounds.  */
+  off_t offset = ftello (fp);
+  if (LONG_MIN <= offset && offset <= LONG_MAX)
+    return /* (long) */ offset;
+  else
+    {
+      errno = EOVERFLOW;
+      return -1;
+    }
+}

gl/ftello.c

@@ -0,0 +1,157 @@
+/* An ftello() function that works around platform bugs.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include "intprops.h"
+
+/* Get lseek.  */
+#include <unistd.h>
+
+#include "stdio-impl.h"
+
+off_t
+ftello (FILE *fp)
+#undef ftello
+#if !HAVE_FTELLO
+# undef ftell
+# define ftello ftell
+#endif
+#if _GL_WINDOWS_64_BIT_OFF_T
+# undef ftello
+# if HAVE__FTELLI64 /* msvc, mingw64 */
+#  define ftello _ftelli64
+# else /* mingw */
+#  define ftello ftello64
+# endif
+#endif
+{
+#if FTELLO_BROKEN_AFTER_UNGETC /* macOS >= 10.15 */
+  /* The system's ftello() is completely broken, because it calls __sflush,
+     which makes side effects on the stream.  */
+
+  /* Handle non-seekable files first.  */
+  if (fp->_file < 0 || fp->_seek == NULL)
+    {
+      errno = ESPIPE;
+      return -1;
+    }
+
+  /* Determine the current offset, ignoring buffered and pushed-back bytes.  */
+  off_t pos;
+
+  if (fp->_flags & __SOFF)
+    pos = fp->_offset;
+  else
+    {
+      pos = fp->_seek (fp->_cookie, 0, SEEK_CUR);
+      if (pos < 0)
+        return -1;
+      if (fp->_flags & __SOPT)
+        {
+          fp->_offset = pos;
+          fp->_flags |= __SOFF;
+        }
+    }
+
+  if (fp->_flags & __SRD)
+    {
+      /* Now consider buffered and pushed-back bytes from ungetc.  */
+      if (fp->_ub._base != NULL)
+        /* Considering the buffered bytes, we are at position
+             pos - fp->_ur.
+           Considering also the pushed-back bytes, we are at position
+             pos - fp->_ur - fp->_r.  */
+        pos = pos - fp->_ur - fp->_r;
+      else
+        /* Considering the buffered bytes, we are at position
+             pos - fp->_r.  */
+        pos = pos - fp->_r;
+      if (pos < 0)
+        {
+          errno = EIO;
+          return -1;
+        }
+    }
+  else if ((fp->_flags & __SWR) && fp->_p != NULL)
+    {
+      /* Consider the buffered bytes.  */
+      off_t buffered = fp->_p - fp->_bf._base;
+
+      /* Compute pos + buffered, with overflow check.  */
+      off_t sum;
+      if (! INT_ADD_OK (pos, buffered, &sum))
+        {
+          errno = EOVERFLOW;
+          return -1;
+        }
+      pos = sum;
+    }
+
+  return pos;
+
+#else
+
+# if LSEEK_PIPE_BROKEN
+  /* mingw gives bogus answers rather than failure on non-seekable files.  */
+  if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
+    return -1;
+# endif
+
+# if FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE /* Solaris */
+  /* The Solaris stdio leaves the _IOREAD flag set after reading from a file
+     reaches EOF and the program then starts writing to the file.  ftello
+     gets confused by this.  */
+  if (fp_->_flag & _IOWRT)
+    {
+      off_t pos;
+
+      /* Call ftello nevertheless, for the side effects that it does on fp.  */
+      ftello (fp);
+
+      /* Compute the file position ourselves.  */
+      pos = lseek (fileno (fp), (off_t) 0, SEEK_CUR);
+      if (pos >= 0)
+        {
+          if ((fp_->_flag & _IONBF) == 0 && fp_->_base != NULL)
+            pos += fp_->_ptr - fp_->_base;
+        }
+      return pos;
+    }
+# endif
+
+# if defined __SL64 && defined __SCLE /* Cygwin */
+  if ((fp->_flags & __SL64) == 0)
+    {
+      /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
+         mode; but has an ftello that requires 64-bit mode.  */
+      FILE *tmp = fopen ("/dev/null", "r");
+      if (!tmp)
+        return -1;
+      fp->_flags |= __SL64;
+      fp->_seek64 = tmp->_seek64;
+      fclose (tmp);
+    }
+# endif
+
+  return ftello (fp);
+
+#endif
+}

gl/full-read.c

@@ -1,18 +0,0 @@
-/* An interface to read that retries after partial reads and interrupts.
-   Copyright (C) 2002-2003, 2009-2013 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#define FULL_READ
-#include "full-write.c"

gl/full-read.h

@@ -1,24 +0,0 @@
-/* An interface to read() that reads all it is asked to read.
-
-   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, read to the Free Software Foundation,
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#include <stddef.h>
-
-/* Read COUNT bytes at BUF to descriptor FD, retrying if interrupted
-   or if partial reads occur.  Return the number of bytes successfully
-   read, setting errno if that is less than COUNT.  errno = 0 means EOF.  */
-extern size_t full_read (int fd, void *buf, size_t count);

gl/full-write.c

@@ -1,79 +0,0 @@
-/* An interface to read and write that retries (if necessary) until complete.
-
-   Copyright (C) 1993-1994, 1997-2006, 2009-2013 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#include <config.h>
-
-/* Specification.  */
-#ifdef FULL_READ
-# include "full-read.h"
-#else
-# include "full-write.h"
-#endif
-
-#include <errno.h>
-
-#ifdef FULL_READ
-# include "safe-read.h"
-# define safe_rw safe_read
-# define full_rw full_read
-# undef const
-# define const /* empty */
-#else
-# include "safe-write.h"
-# define safe_rw safe_write
-# define full_rw full_write
-#endif
-
-#ifdef FULL_READ
-/* Set errno to zero upon EOF.  */
-# define ZERO_BYTE_TRANSFER_ERRNO 0
-#else
-/* Some buggy drivers return 0 when one tries to write beyond
-   a device's end.  (Example: Linux 1.2.13 on /dev/fd0.)
-   Set errno to ENOSPC so they get a sensible diagnostic.  */
-# define ZERO_BYTE_TRANSFER_ERRNO ENOSPC
-#endif
-
-/* Write(read) COUNT bytes at BUF to(from) descriptor FD, retrying if
-   interrupted or if a partial write(read) occurs.  Return the number
-   of bytes transferred.
-   When writing, set errno if fewer than COUNT bytes are written.
-   When reading, if fewer than COUNT bytes are read, you must examine
-   errno to distinguish failure from EOF (errno == 0).  */
-size_t
-full_rw (int fd, const void *buf, size_t count)
-{
-  size_t total = 0;
-  const char *ptr = (const char *) buf;
-
-  while (count > 0)
-    {
-      size_t n_rw = safe_rw (fd, ptr, count);
-      if (n_rw == (size_t) -1)
-        break;
-      if (n_rw == 0)
-        {
-          errno = ZERO_BYTE_TRANSFER_ERRNO;
-          break;
-        }
-      total += n_rw;
-      ptr += n_rw;
-      count -= n_rw;
-    }
-
-  return total;
-}

gl/gai_strerror.c

@@ -1,20 +1,20 @@
-/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2013 Free Software
+/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Philip Blundell <pjb27@cam.ac.uk>, 1997.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _LIBC
 # include <config.h>

gl/getaddrinfo.c

@@ -1,19 +1,19 @@
 /* Get address information (partial implementation).
-   Copyright (C) 1997, 2001-2002, 2004-2013 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2001-2002, 2004-2023 Free Software Foundation, Inc.
    Contributed by Simon Josefsson <simon@josefsson.org>.
 
-   This program is free software; you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3, or (at your option)
+   published by the Free Software Foundation; either version 2.1 of the
-   any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
    optimizes away the sa == NULL test below.  */
@@ -39,8 +39,6 @@
 /* Get snprintf. */
 #include <stdio.h>
 
-#include <stdbool.h>
-
 #include "gettext.h"
 #define _(String) gettext (String)
 #define N_(String) String
@@ -54,7 +52,30 @@
 # define PF_UNSPEC 0
 #endif
 
-#if defined _WIN32 || defined __WIN32__
+#if HAVE_GETADDRINFO
+
+/* Override with cdecl calling convention.  */
+
+int
+getaddrinfo (const char *restrict nodename,
+             const char *restrict servname,
+             const struct addrinfo *restrict hints,
+             struct addrinfo **restrict res)
+# undef getaddrinfo
+{
+  return getaddrinfo (nodename, servname, hints, res);
+}
+
+void
+freeaddrinfo (struct addrinfo *ai)
+# undef freeaddrinfo
+{
+  freeaddrinfo (ai);
+}
+
+#else
+
+# if defined _WIN32 && !defined __CYGWIN__
 #  define WINDOWS_NATIVE
 # endif
 
@@ -62,6 +83,17 @@
 # include "sockets.h"
 
 # ifdef WINDOWS_NATIVE
+
+/* Don't assume that UNICODE is not defined.  */
+#  undef GetModuleHandle
+#  define GetModuleHandle GetModuleHandleA
+
+#  if !(_WIN32_WINNT >= _WIN32_WINNT_WINXP)
+
+/* Avoid warnings from gcc -Wcast-function-type.  */
+#   define GetProcAddress \
+     (void *) GetProcAddress
+
 typedef int (WSAAPI *getaddrinfo_func) (const char*, const char*,
                                         const struct addrinfo*,
                                         struct addrinfo**);
@@ -107,6 +139,29 @@ use_win32_p (void)
 
   return 1;
 }
+
+#  else
+
+static int
+use_win32_p (void)
+{
+  static int done = 0;
+
+  if (!done)
+    {
+      done = 1;
+
+      gl_sockets_startup (SOCKETS_1_1);
+    }
+
+  return 1;
+}
+
+#   define getaddrinfo_ptr getaddrinfo
+#   define freeaddrinfo_ptr freeaddrinfo
+#   define getnameinfo_ptr getnameinfo
+
+#  endif
 # endif
 
 static bool
@@ -133,6 +188,7 @@ getaddrinfo (const char *restrict nodename,
              const char *restrict servname,
              const struct addrinfo *restrict hints,
              struct addrinfo **restrict res)
+#undef getaddrinfo
 {
   struct addrinfo *tmp;
   int port = 0;
@@ -334,6 +390,7 @@ getaddrinfo (const char *restrict nodename,
 /* Free 'addrinfo' structure AI including associated storage.  */
 void
 freeaddrinfo (struct addrinfo *ai)
+#undef freeaddrinfo
 {
 # ifdef WINDOWS_NATIVE
   if (use_win32_p ())
@@ -360,6 +417,7 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
              char *restrict node, socklen_t nodelen,
              char *restrict service, socklen_t servicelen,
              int flags)
+#undef getnameinfo
 {
 # ifdef WINDOWS_NATIVE
   if (use_win32_p ())
@@ -441,3 +499,5 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
 
   return 0;
 }
+
+#endif

gl/getdelim.c

@@ -0,0 +1,147 @@
+/* getdelim.c --- Implementation of replacement getdelim function.
+   Copyright (C) 1994, 1996-1998, 2001, 2003, 2005-2023 Free Software
+   Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Ported from glibc by Simon Josefsson. */
+
+/* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
+   optimizes away the lineptr == NULL || n == NULL || fp == NULL tests below.  */
+#define _GL_ARG_NONNULL(params)
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifndef SSIZE_MAX
+# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
+#endif
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+# define getc_maybe_unlocked(fp)        getc(fp)
+#elif !HAVE_FLOCKFILE || !HAVE_FUNLOCKFILE || !HAVE_DECL_GETC_UNLOCKED
+# undef flockfile
+# undef funlockfile
+# define flockfile(x) ((void) 0)
+# define funlockfile(x) ((void) 0)
+# define getc_maybe_unlocked(fp)        getc(fp)
+#else
+# define getc_maybe_unlocked(fp)        getc_unlocked(fp)
+#endif
+
+static void
+alloc_failed (void)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* Avoid errno problem without using the realloc module; see:
+     https://lists.gnu.org/r/bug-gnulib/2016-08/msg00025.html  */
+  errno = ENOMEM;
+#endif
+}
+
+/* Read up to (and including) a DELIMITER from FP into *LINEPTR (and
+   NUL-terminate it).  *LINEPTR is a pointer returned from malloc (or
+   NULL), pointing to *N characters of space.  It is realloc'ed as
+   necessary.  Returns the number of characters read (not including
+   the null terminator), or -1 on error or EOF.  */
+
+ssize_t
+getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
+{
+  ssize_t result;
+  size_t cur_len = 0;
+
+  if (lineptr == NULL || n == NULL || fp == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  flockfile (fp);
+
+  if (*lineptr == NULL || *n == 0)
+    {
+      char *new_lineptr;
+      *n = 120;
+      new_lineptr = (char *) realloc (*lineptr, *n);
+      if (new_lineptr == NULL)
+        {
+          alloc_failed ();
+          result = -1;
+          goto unlock_return;
+        }
+      *lineptr = new_lineptr;
+    }
+
+  for (;;)
+    {
+      int i;
+
+      i = getc_maybe_unlocked (fp);
+      if (i == EOF)
+        {
+          result = -1;
+          break;
+        }
+
+      /* Make enough space for len+1 (for final NUL) bytes.  */
+      if (cur_len + 1 >= *n)
+        {
+          size_t needed_max =
+            SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
+          size_t needed = 2 * *n + 1;   /* Be generous. */
+          char *new_lineptr;
+
+          if (needed_max < needed)
+            needed = needed_max;
+          if (cur_len + 1 >= needed)
+            {
+              result = -1;
+              errno = EOVERFLOW;
+              goto unlock_return;
+            }
+
+          new_lineptr = (char *) realloc (*lineptr, needed);
+          if (new_lineptr == NULL)
+            {
+              alloc_failed ();
+              result = -1;
+              goto unlock_return;
+            }
+
+          *lineptr = new_lineptr;
+          *n = needed;
+        }
+
+      (*lineptr)[cur_len] = i;
+      cur_len++;
+
+      if (i == delimiter)
+        break;
+    }
+  (*lineptr)[cur_len] = '\0';
+  result = cur_len ? cur_len : result;
+
+ unlock_return:
+  funlockfile (fp); /* doesn't set errno */
+
+  return result;
+}

gl/getdtablesize.c

@@ -0,0 +1,124 @@
+/* getdtablesize() function: Return maximum possible file descriptor value + 1.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+
+# include <stdio.h>
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#  include "msvc-inval.h"
+# endif
+
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+_setmaxstdio_nothrow (int newmax)
+{
+  int result;
+
+  TRY_MSVC_INVAL
+    {
+      result = _setmaxstdio (newmax);
+    }
+  CATCH_MSVC_INVAL
+    {
+      result = -1;
+    }
+  DONE_MSVC_INVAL;
+
+  return result;
+}
+# else
+#  define _setmaxstdio_nothrow _setmaxstdio
+# endif
+
+/* Cache for the previous getdtablesize () result.  Safe to cache because
+   Windows also lacks setrlimit.  */
+static int dtablesize;
+
+int
+getdtablesize (void)
+{
+  if (dtablesize == 0)
+    {
+      /* We are looking for the number N such that the valid file descriptors
+         are 0..N-1.  It can be obtained through a loop as follows:
+           {
+             int fd;
+             for (fd = 3; fd < 65536; fd++)
+               if (dup2 (0, fd) == -1)
+                 break;
+             return fd;
+           }
+         On Windows XP, the result is 2048.
+         The drawback of this loop is that it allocates memory for a libc
+         internal array that is never freed.
+
+         The number N can also be obtained as the upper bound for
+         _getmaxstdio ().  _getmaxstdio () returns the maximum number of open
+         FILE objects.  The sanity check in _setmaxstdio reveals the maximum
+         number of file descriptors.  This too allocates memory, but it is
+         freed when we call _setmaxstdio with the original value.  */
+      int orig_max_stdio = _getmaxstdio ();
+      unsigned int bound;
+      for (bound = 0x10000; _setmaxstdio_nothrow (bound) < 0; bound = bound / 2)
+        ;
+      _setmaxstdio_nothrow (orig_max_stdio);
+      dtablesize = bound;
+    }
+  return dtablesize;
+}
+
+#else
+
+# include <limits.h>
+# include <sys/resource.h>
+
+# ifndef RLIM_SAVED_CUR
+#  define RLIM_SAVED_CUR RLIM_INFINITY
+# endif
+# ifndef RLIM_SAVED_MAX
+#  define RLIM_SAVED_MAX RLIM_INFINITY
+# endif
+
+# ifdef __CYGWIN__
+  /* Cygwin 1.7.25 auto-increases the RLIMIT_NOFILE soft limit until it
+     hits the compile-time constant hard limit of 3200.  We might as
+     well just report the hard limit.  */
+#  define rlim_cur rlim_max
+# endif
+
+int
+getdtablesize (void)
+{
+  struct rlimit lim;
+
+  if (getrlimit (RLIMIT_NOFILE, &lim) == 0
+      && 0 <= lim.rlim_cur && lim.rlim_cur <= INT_MAX
+      && lim.rlim_cur != RLIM_INFINITY
+      && lim.rlim_cur != RLIM_SAVED_CUR
+      && lim.rlim_cur != RLIM_SAVED_MAX)
+    return lim.rlim_cur;
+
+  return INT_MAX;
+}
+
+#endif

gl/gethostname.c

@@ -1,26 +1,26 @@
 /* gethostname emulation for SysV and POSIX.1.
 
-   Copyright (C) 1992, 2003, 2006, 2008-2013 Free Software Foundation, Inc.
+   Copyright (C) 1992, 2003, 2006, 2008-2023 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* David MacKenzie <djm@gnu.ai.mit.edu>
    Windows port by Simon Josefsson <simon@josefsson.org> */
 
 #include <config.h>
 
-#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
+#if !(defined _WIN32 && !defined __CYGWIN__)
 /* Unix API.  */
 
 /* Specification.  */

gl/getline.c

@@ -0,0 +1,27 @@
+/* getline.c --- Implementation of replacement getline function.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Simon Josefsson. */
+
+#include <config.h>
+
+#include <stdio.h>
+
+ssize_t
+getline (char **lineptr, size_t *n, FILE *stream)
+{
+  return getdelim (lineptr, n, '\n', stream);
+}

gl/getloadavg.c

@@ -1,6 +1,6 @@
 /* Get the system load averages.
 
-   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2013 Free Software
+   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with gnulib.
@@ -8,7 +8,7 @@
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -17,7 +17,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Compile-time symbols that this file uses:
 
@@ -47,29 +47,25 @@
    N_NAME_POINTER               The nlist n_name element is a pointer,
                                 not an array.
    HAVE_STRUCT_NLIST_N_UN_N_NAME 'n_un.n_name' is member of 'struct nlist'.
-   LINUX_LDAV_FILE              [__linux__, __CYGWIN__]: File containing
+   LINUX_LDAV_FILE              [__linux__, __ANDROID__, __CYGWIN__]: File
-                                load averages.
+                                containing load averages.
 
    Specific system predefines this file uses, aside from setting
    default values if not emacs:
 
    apollo
    BSD                          Real BSD, not just BSD-like.
-   convex
    DGUX
    eunice                       UNIX emulator under VMS.
    hpux
    __MSDOS__                    No-op for MSDOS.
    NeXT
    sgi
-   sequent                      Sequent Dynix 3.x.x (BSD)
-   _SEQUENT_                    Sequent DYNIX/ptx 1.x.x (SYSV)
-   sony_news                    NEWS-OS (works at least for 4.1C)
    UMAX
    UMAX4_3
    VMS
-   WINDOWS32                    No-op for Windows95/NT.
+   _WIN32                       Native Windows (possibly also defined on Cygwin)
-   __linux__                    Linux: assumes /proc file system mounted.
+   __linux__, __ANDROID__       Linux: assumes /proc file system mounted.
                                 Support from Michael K. Johnson.
    __CYGWIN__                   Cygwin emulates linux /proc/loadavg.
    __NetBSD__                   NetBSD: assumes /kern file system mounted.
@@ -86,7 +82,6 @@
 #include <stdlib.h>
 
 #include <errno.h>
-#include <stdbool.h>
 #include <stdio.h>
 
 # include <sys/types.h>
@@ -97,9 +92,8 @@
 
 # include "intprops.h"
 
-# if !defined (BSD) && defined (ultrix)
+# if defined _WIN32 && ! defined __CYGWIN__ && ! defined WINDOWS32
-/* Ultrix behaves like BSD on Vaxen.  */
+#  define WINDOWS32
-#  define BSD
 # endif
 
 # ifdef NeXT
@@ -141,10 +135,6 @@
 #  define MORE_BSD
 # endif
 
-# if defined (ultrix) && defined (mips)
-#  define decstation
-# endif
-
 # if defined (__SVR4) && !defined (SVR4)
 #  define SVR4
 # endif
@@ -168,13 +158,6 @@
 #  include <sys/table.h>
 # endif
 
-/* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
-   default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>.  Combine
-   that with a couple of other things and we'll have a unique match.  */
-# if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
-#  define tek4300                       /* Define by emacs, but not by other users.  */
-# endif
-
 
 /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars.  */
 # ifndef LOAD_AVE_TYPE
@@ -187,14 +170,6 @@
 #   define LOAD_AVE_TYPE long
 #  endif
 
-#  ifdef decstation
-#   define LOAD_AVE_TYPE long
-#  endif
-
-#  ifdef _SEQUENT_
-#   define LOAD_AVE_TYPE long
-#  endif
-
 #  ifdef sgi
 #   define LOAD_AVE_TYPE long
 #  endif
@@ -203,41 +178,14 @@
 #   define LOAD_AVE_TYPE long
 #  endif
 
-#  ifdef sony_news
-#   define LOAD_AVE_TYPE long
-#  endif
-
-#  ifdef sequent
-#   define LOAD_AVE_TYPE long
-#  endif
-
 #  ifdef OSF_ALPHA
 #   define LOAD_AVE_TYPE long
 #  endif
 
-#  if defined (ardent) && defined (titan)
-#   define LOAD_AVE_TYPE long
-#  endif
-
-#  ifdef tek4300
-#   define LOAD_AVE_TYPE long
-#  endif
-
-#  if defined (alliant) && defined (i860) /* Alliant FX/2800 */
-#   define LOAD_AVE_TYPE long
-#  endif
-
 #  if defined _AIX && ! defined HAVE_LIBPERFSTAT
 #   define LOAD_AVE_TYPE long
 #  endif
 
-#  ifdef convex
-#   define LOAD_AVE_TYPE double
-#   ifndef LDAV_CVT
-#    define LDAV_CVT(n) (n)
-#   endif
-#  endif
-
 # endif /* No LOAD_AVE_TYPE.  */
 
 # ifdef OSF_ALPHA
@@ -247,13 +195,6 @@
 #  define FSCALE 1024.0
 # endif
 
-# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
-/* <sys/param.h> defines an incorrect value for FSCALE on an
-   Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu.  */
-#  undef FSCALE
-#  define FSCALE 100.0
-# endif
-
 
 # ifndef FSCALE
 
@@ -263,25 +204,17 @@
 #   define FSCALE 2048.0
 #  endif
 
-#  if defined (MIPS) || defined (SVR4) || defined (decstation)
+#  if defined (MIPS) || defined (SVR4)
 #   define FSCALE 256
 #  endif
 
-#  if defined (sgi) || defined (sequent)
+#  if defined (sgi)
 /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
    above under #ifdef MIPS.  But we want the sgi value.  */
 #   undef FSCALE
 #   define FSCALE 1000.0
 #  endif
 
-#  if defined (ardent) && defined (titan)
-#   define FSCALE 65536.0
-#  endif
-
-#  ifdef tek4300
-#   define FSCALE 100.0
-#  endif
-
 #  if defined _AIX && !defined HAVE_LIBPERFSTAT
 #   define FSCALE 65536.0
 #  endif
@@ -303,28 +236,22 @@
 # endif
 
 
-# if !defined (KERNEL_FILE) && defined (sequent)
-#  define KERNEL_FILE "/dynix"
-# endif
-
 # if !defined (KERNEL_FILE) && defined (hpux)
 #  define KERNEL_FILE "/hp-ux"
 # endif
 
-# if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
+# if !defined (KERNEL_FILE) && (defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi))
 #  define KERNEL_FILE "/unix"
 # endif
 
 
-# if !defined (LDAV_SYMBOL) && defined (alliant)
+# if !defined (LDAV_SYMBOL) && (defined (hpux) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
-#  define LDAV_SYMBOL "_Loadavg"
-# endif
-
-# if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
 #  define LDAV_SYMBOL "avenrun"
 # endif
 
+# ifdef HAVE_UNISTD_H
 #  include <unistd.h>
+# endif
 
 /* LOAD_AVE_TYPE should only get defined if we're going to use the
    nlist method.  */
@@ -335,7 +262,7 @@
 # ifdef LOAD_AVE_TYPE
 
 #  ifndef __VMS
-#   ifndef __linux__
+#   if !(defined __linux__ || defined __ANDROID__)
 #    ifndef NLIST_STRUCT
 #     include <a.out.h>
 #    else /* NLIST_STRUCT */
@@ -358,7 +285,7 @@
 #    ifndef LDAV_SYMBOL
 #     define LDAV_SYMBOL "_avenrun"
 #    endif /* LDAV_SYMBOL */
-#   endif /* __linux__ */
+#   endif /* __linux__ || __ANDROID__ */
 
 #  else /* __VMS */
 
@@ -431,7 +358,8 @@
 #  include <sys/dg_sys_info.h>
 # endif
 
-# if (defined __linux__ || defined __CYGWIN__ || defined SUNOS_5        \
+# if (defined __linux__ || defined __ANDROID__ \
+      || defined __CYGWIN__ || defined SUNOS_5 \
       || (defined LOAD_AVE_TYPE && ! defined __VMS))
 #  include <fcntl.h>
 # endif
@@ -460,7 +388,7 @@ static bool getloadavg_initialized;
 /* Offset in kmem to seek to read load average, or 0 means invalid.  */
 static long offset;
 
-#  if ! defined __VMS && ! defined sgi && ! defined __linux__
+#  if ! defined __VMS && ! defined sgi && ! (defined __linux__ || defined __ANDROID__)
 static struct nlist name_list[2];
 #  endif
 
@@ -495,17 +423,17 @@ getloadavg (double loadavg[], int nelem)
   int saved_errno;
 
   kc = kstat_open ();
-  if (kc == 0)
+  if (kc == NULL)
     return -1;
   ksp = kstat_lookup (kc, "unix", 0, "system_misc");
-  if (ksp == 0)
+  if (ksp == NULL)
     return -1;
   if (kstat_read (kc, ksp, 0) == -1)
     return -1;
 
 
   kn = kstat_data_lookup (ksp, "avenrun_1min");
-  if (kn == 0)
+  if (kn == NULL)
     {
       /* Return -1 if no load average information is available.  */
       nelem = 0;
@@ -518,14 +446,14 @@ getloadavg (double loadavg[], int nelem)
   if (nelem >= 2)
     {
       kn = kstat_data_lookup (ksp, "avenrun_5min");
-      if (kn != 0)
+      if (kn != NULL)
         {
           loadavg[elem++] = (double) kn->value.ul / FSCALE;
 
           if (nelem >= 3)
             {
               kn = kstat_data_lookup (ksp, "avenrun_15min");
-              if (kn != 0)
+              if (kn != NULL)
                 loadavg[elem++] = (double) kn->value.ul / FSCALE;
             }
         }
@@ -570,8 +498,8 @@ getloadavg (double loadavg[], int nelem)
   }
 # endif
 
-# if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__))
+# if !defined (LDAV_DONE) && (defined __linux__ || defined __ANDROID__ || defined __CYGWIN__)
-                                              /* Linux without glibc, Cygwin */
+                                      /* Linux without glibc, Android, Cygwin */
 #  define LDAV_DONE
 #  undef LOAD_AVE_TYPE
 
@@ -583,7 +511,7 @@ getloadavg (double loadavg[], int nelem)
   char const *ptr = ldavgbuf;
   int fd, count, saved_errno;
 
-  fd = open (LINUX_LDAV_FILE, O_RDONLY);
+  fd = open (LINUX_LDAV_FILE, O_RDONLY | O_CLOEXEC);
   if (fd == -1)
     return -1;
   count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
@@ -621,12 +549,12 @@ getloadavg (double loadavg[], int nelem)
         for (ptr++; '0' <= *ptr && *ptr <= '9'; ptr++)
           numerator = 10 * numerator + (*ptr - '0'), denominator *= 10;
 
-      loadavg[elem++] = numerator / denominator;
+      loadavg[elem] = numerator / denominator;
     }
 
   return elem;
 
-# endif /* __linux__ || __CYGWIN__ */
+# endif /* __linux__ || __ANDROID__ || __CYGWIN__ */
 
 # if !defined (LDAV_DONE) && defined (__NetBSD__)          /* NetBSD < 0.9 */
 #  define LDAV_DONE
@@ -638,15 +566,22 @@ getloadavg (double loadavg[], int nelem)
 
   unsigned long int load_ave[3], scale;
   int count;
-  FILE *fp;
+  char readbuf[4 * INT_BUFSIZE_BOUND (unsigned long int) + 1];
-
+  int fd = open (NETBSD_LDAV_FILE, O_RDONLY | O_CLOEXEC);
-  fp = fopen (NETBSD_LDAV_FILE, "r");
+  if (fd < 0)
-  if (fp == NULL)
+    return fd;
+  int nread = read (fd, readbuf, sizeof readbuf - 1);
+  int err = errno;
+  close (fd);
+  if (nread < 0)
+    {
+      errno = err;
       return -1;
-  count = fscanf (fp, "%lu %lu %lu %lu\n",
+    }
+  readbuf[nread] = '\0';
+  count = sscanf (readbuf, "%lu %lu %lu %lu\n",
                   &load_ave[0], &load_ave[1], &load_ave[2],
                   &scale);
-  (void) fclose (fp);
   if (count != 4)
     {
       errno = ENOTSUP;
@@ -915,7 +850,7 @@ getloadavg (double loadavg[], int nelem)
 
 #   ifndef SUNOS_5
       if (
-#    if !(defined (_AIX) && !defined (ps2))
+#    if !defined (_AIX)
           nlist (KERNEL_FILE, name_list)
 #    else  /* _AIX */
           knlist (name_list, 1, sizeof (name_list[0]))
@@ -940,33 +875,17 @@ getloadavg (double loadavg[], int nelem)
   if (!getloadavg_initialized)
     {
 #  ifndef SUNOS_5
-      /* Set the channel to close on exec, so it does not
-         litter any child's descriptor table.  */
-#   ifndef O_CLOEXEC
-#    define O_CLOEXEC 0
-#   endif
       int fd = open ("/dev/kmem", O_RDONLY | O_CLOEXEC);
       if (0 <= fd)
         {
-#   if F_DUPFD_CLOEXEC
-          if (fd <= STDERR_FILENO)
-            {
-              int fd1 = fcntl (fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
-              close (fd);
-              fd = fd1;
-            }
-#   endif
-          if (0 <= fd)
-            {
           channel = fd;
           getloadavg_initialized = true;
         }
-        }
 #  else /* SUNOS_5 */
       /* We pass 0 for the kernel, corefile, and swapfile names
          to use the currently running kernel.  */
       kd = kvm_open (0, 0, 0, O_RDONLY, 0);
-      if (kd != 0)
+      if (kd != NULL)
         {
           /* nlist the currently running kernel.  */
           kvm_nlist (kd, name_list);

gl/getopt-cdefs.in.h

@@ -0,0 +1,66 @@
+/* getopt-on-non-glibc compatibility macros.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CDEFS_H
+#define _GETOPT_CDEFS_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
+   a number of the internal macros supplied to GNU libc's headers by
+   sys/cdefs.h.  Provide fallback definitions for all of them.  */
+#if @HAVE_SYS_CDEFS_H@
+# include <sys/cdefs.h>
+#endif
+
+#ifndef __BEGIN_DECLS
+# ifdef __cplusplus
+#  define __BEGIN_DECLS extern "C" {
+# else
+#  define __BEGIN_DECLS /* nothing */
+# endif
+#endif
+#ifndef __END_DECLS
+# ifdef __cplusplus
+#  define __END_DECLS }
+# else
+#  define __END_DECLS /* nothing */
+# endif
+#endif
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_VERSION__
+# define __GNUC_PREREQ(maj, min) \
+        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __THROW
+# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
+#  define __THROW       throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#endif /* _GETOPT_CDEFS_H */

gl/getopt-core.h

@@ -0,0 +1,96 @@
+/* Declarations for getopt (basic, portable features only).
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CORE_H
+#define _GETOPT_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  Unlike most bits headers, it does not have
+   a protective #error, because the guard macro for getopt.h in
+   gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* For communication from 'getopt' to the caller.
+   When 'getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when 'ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to 'getopt'.
+
+   On entry to 'getopt', zero means this is the first call; initialize.
+
+   When 'getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, 'optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message 'getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, 'optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in 'optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU 'getopt'.
+
+   The argument '--' causes premature termination of argument
+   scanning, explicitly telling 'getopt' that there are no more
+   options.
+
+   If OPTS begins with '-', then non-option arguments are treated as
+   arguments to the option '\1'.  This behavior is specific to the GNU
+   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
+   the environment, then do not permute arguments.
+
+   For standards compliance, the 'argv' argument has the type
+   char *const *, but this is inaccurate; if argument permutation is
+   enabled, the argv array (not the strings it points to) must be
+   writable.  */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_CORE_H */

gl/getopt-ext.h

@@ -0,0 +1,77 @@
+/* Declarations for getopt (GNU extensions).
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_EXT_H
+#define _GETOPT_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   Unlike most bits headers, it does not have a protective #error,
+   because the guard macro for getopt.h in gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of 'struct option' terminated by an element containing a name which is
+   zero.
+
+   The field 'has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field 'flag' is not NULL, it points to a variable that is set
+   to the value given in the field 'val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an 'int' to
+   a compiled-in constant, such as set a value from 'optarg', set the
+   option's 'flag' field to zero and its 'val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero 'flag' field, 'getopt'
+   returns the contents of the 'val' field.  */
+
+struct option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the 'has_arg' field of 'struct option'.  */
+
+#define no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+			const char *__shortopts,
+		        const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_EXT_H */

gl/getopt-pfx-core.h

@@ -0,0 +1,66 @@
+/* getopt (basic, portable features) gnulib wrapper header.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_CORE_H
+#define _GETOPT_PFX_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define getopt __GETOPT_ID (getopt)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+
+/* Work around a a problem on macOS, which declares getopt with a
+   trailing __DARWIN_ALIAS(getopt) that would expand to something like
+   __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
+   hack to suppress the macOS declaration <https://bugs.gnu.org/40205>.  */
+# ifdef __APPLE__
+#  define _GETOPT
+# endif
+
+/* The system's getopt.h may have already included getopt-core.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_CORE_H so that
+   getopt-core.h declares them with prefixes.  */
+# undef _GETOPT_CORE_H
+#endif
+
+#include <getopt-core.h>
+
+#endif /* _GETOPT_PFX_CORE_H */

gl/getopt-pfx-ext.h

@@ -0,0 +1,70 @@
+/* getopt (GNU extensions) gnulib wrapper header.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_EXT_H
+#define _GETOPT_PFX_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   It does not have a protective #error, because the guard macro for
+   getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt_long
+# undef getopt_long_only
+# undef option
+# undef _getopt_internal
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define option __GETOPT_ID (option)
+# define _getopt_internal __GETOPT_ID (getopt_internal)
+
+/* The system's getopt.h may have already included getopt-ext.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_EXT_H so that
+   getopt-ext.h declares them with prefixes.  */
+# undef _GETOPT_EXT_H
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+   getopt_long_only; they declare "char **argv".  For backward
+   compatibility with old applications, if __GETOPT_PREFIX is not
+   defined, we supply GNU-libc-compatible, but incorrect, prototypes
+   using "char *const *argv".  (GNU libc is stuck with the incorrect
+   prototypes, as they are baked into older versions of LSB.)  */
+#ifndef __getopt_argv_const
+# if defined __GETOPT_PREFIX
+#  define __getopt_argv_const /* empty */
+# else
+#  define __getopt_argv_const const
+# endif
+#endif
+
+#include <getopt-ext.h>
+
+#endif /* _GETOPT_PFX_EXT_H */

gl/getopt.in.h

@@ -1,20 +1,22 @@
 /* Declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2007, 2009-2013 Free Software
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   Foundation, Inc.
+   This file is part of gnulib.
-   This file is part of the GNU C Library.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library, which supplies a different version of
+   this file.
 
-   This program is free software: you can redistribute it and/or modify
+   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   it under the terms of the GNU Lesser General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 2.1 of the
-   (at your option) any later version.
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_GETOPT_H
 
@@ -32,22 +34,15 @@
 # undef _GL_SYSTEM_GETOPT
 #endif
 
-#ifndef _@GUARD_PREFIX@_GETOPT_H
-
-#ifndef __need_getopt
 #define _@GUARD_PREFIX@_GETOPT_H 1
-#endif
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
-   defined in this header.  When this happens, include the
+   defined in getopt-core.h and getopt-ext.h.  When this happens,
-   headers that might declare getopt so that they will not cause
+   include the headers that might declare getopt so that they will not
-   confusion if included after this file (if the system had <getopt.h>,
+   cause confusion if included after this file (if the system had
-   we have already included it).  Then systematically rename
+   <getopt.h>, we have already included it).  */
-   identifiers so that they do not collide with the system functions
+#if defined __GETOPT_PREFIX
-   and variables.  Renaming avoids problems with some compilers and
-   linkers.  */
-#if defined __GETOPT_PREFIX && !defined __need_getopt
 # if !@HAVE_GETOPT_H@
 #  define __need_system_stdlib_h
 #  include <stdlib.h>
@@ -55,201 +50,12 @@
 #  include <stdio.h>
 #  include <unistd.h>
 # endif
-# undef __need_getopt
-# undef getopt
-# undef getopt_long
-# undef getopt_long_only
-# undef optarg
-# undef opterr
-# undef optind
-# undef optopt
-# undef option
-# define __GETOPT_CONCAT(x, y) x ## y
-# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
-# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
-# define getopt __GETOPT_ID (getopt)
-# define getopt_long __GETOPT_ID (getopt_long)
-# define getopt_long_only __GETOPT_ID (getopt_long_only)
-# define optarg __GETOPT_ID (optarg)
-# define opterr __GETOPT_ID (opterr)
-# define optind __GETOPT_ID (optind)
-# define optopt __GETOPT_ID (optopt)
-# define option __GETOPT_ID (option)
-# define _getopt_internal __GETOPT_ID (getopt_internal)
-#endif
-
-/* Standalone applications get correct prototypes for getopt_long and
-   getopt_long_only; they declare "char **argv".  libc uses prototypes
-   with "char *const *argv" that are incorrect because getopt_long and
-   getopt_long_only can permute argv; this is required for backward
-   compatibility (e.g., for LSB 2.0.1).
-
-   This used to be '#if defined __GETOPT_PREFIX && !defined __need_getopt',
-   but it caused redefinition warnings if both unistd.h and getopt.h were
-   included, since unistd.h includes getopt.h having previously defined
-   __need_getopt.
-
-   The only place where __getopt_argv_const is used is in definitions
-   of getopt_long and getopt_long_only below, but these are visible
-   only if __need_getopt is not defined, so it is quite safe to rewrite
-   the conditional as follows:
-*/
-#if !defined __need_getopt
-# if defined __GETOPT_PREFIX
-#  define __getopt_argv_const /* empty */
-# else
-#  define __getopt_argv_const const
-# endif
-#endif
-
-/* If __GNU_LIBRARY__ is not already defined, either we are being used
-   standalone, or this is the first header included in the source file.
-   If we are being used with glibc, we need to include <features.h>, but
-   that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
-   not defined, include <ctype.h>, which will pull in <features.h> for us
-   if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
-   doesn't flood the namespace with stuff the way some other headers do.)  */
-#if !defined __GNU_LIBRARY__
-# include <ctype.h>
-#endif
-
-#ifndef __THROW
-# ifndef __GNUC_PREREQ
-#  define __GNUC_PREREQ(maj, min) (0)
-# endif
-# if defined __cplusplus && __GNUC_PREREQ (2,8)
-#  define __THROW       throw ()
-# else
-#  define __THROW
-# endif
 #endif
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
-#ifdef __cplusplus
+#include <getopt-cdefs.h>
-extern "C" {
+#include <getopt-pfx-core.h>
-#endif
+#include <getopt-pfx-ext.h>
-
-/* For communication from 'getopt' to the caller.
-   When 'getopt' finds an option that takes an argument,
-   the argument value is returned here.
-   Also, when 'ordering' is RETURN_IN_ORDER,
-   each non-option ARGV-element is returned here.  */
-
-extern char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
-   This is used for communication to and from the caller
-   and for communication between successive calls to 'getopt'.
-
-   On entry to 'getopt', zero means this is the first call; initialize.
-
-   When 'getopt' returns -1, this is the index of the first of the
-   non-option elements that the caller should itself scan.
-
-   Otherwise, 'optind' communicates from one call to the next
-   how much of ARGV has been scanned so far.  */
-
-extern int optind;
-
-/* Callers store zero here to inhibit the error message 'getopt' prints
-   for unrecognized options.  */
-
-extern int opterr;
-
-/* Set to an option character which was unrecognized.  */
-
-extern int optopt;
-
-#ifndef __need_getopt
-/* Describe the long-named options requested by the application.
-   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
-   of 'struct option' terminated by an element containing a name which is
-   zero.
-
-   The field 'has_arg' is:
-   no_argument          (or 0) if the option does not take an argument,
-   required_argument    (or 1) if the option requires an argument,
-   optional_argument    (or 2) if the option takes an optional argument.
-
-   If the field 'flag' is not NULL, it points to a variable that is set
-   to the value given in the field 'val' when the option is found, but
-   left unchanged if the option is not found.
-
-   To have a long-named option do something other than set an 'int' to
-   a compiled-in constant, such as set a value from 'optarg', set the
-   option's 'flag' field to zero and its 'val' field to a nonzero
-   value (the equivalent single-letter option character, if there is
-   one).  For long options that have a zero 'flag' field, 'getopt'
-   returns the contents of the 'val' field.  */
-
-# if !GNULIB_defined_struct_option
-struct option
-{
-  const char *name;
-  /* has_arg can't be an enum because some compilers complain about
-     type mismatches in all the code that assumes it is an int.  */
-  int has_arg;
-  int *flag;
-  int val;
-};
-#  define GNULIB_defined_struct_option 1
-# endif
-
-/* Names for the values of the 'has_arg' field of 'struct option'.  */
-
-# define no_argument            0
-# define required_argument      1
-# define optional_argument      2
-#endif  /* need getopt */
-
-
-/* Get definitions and prototypes for functions to process the
-   arguments in ARGV (ARGC of them, minus the program name) for
-   options given in OPTS.
-
-   Return the option character from OPTS just read.  Return -1 when
-   there are no more options.  For unrecognized options, or options
-   missing arguments, 'optopt' is set to the option letter, and '?' is
-   returned.
-
-   The OPTS string is a list of characters which are recognized option
-   letters, optionally followed by colons, specifying that that letter
-   takes an argument, to be placed in 'optarg'.
-
-   If a letter in OPTS is followed by two colons, its argument is
-   optional.  This behavior is specific to the GNU 'getopt'.
-
-   The argument '--' causes premature termination of argument
-   scanning, explicitly telling 'getopt' that there are no more
-   options.
-
-   If OPTS begins with '-', then non-option arguments are treated as
-   arguments to the option '\1'.  This behavior is specific to the GNU
-   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
-   the environment, then do not permute arguments.  */
-
-extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-#ifndef __need_getopt
-extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
-                        const char *__shortopts,
-                        const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
-                             const char *__shortopts,
-                             const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-/* Make sure we later can get all the definitions and declarations.  */
-#undef __need_getopt
 
 #endif /* _@GUARD_PREFIX@_GETOPT_H */
-#endif /* _@GUARD_PREFIX@_GETOPT_H */

gl/getopt1.c

@@ -1,41 +1,29 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2013 Free Software
+   Copyright (C) 1987-2023 Free Software Foundation, Inc.
-   Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
-   This file is part of the GNU C Library.
+   Patches to this file should be submitted to both projects.
 
-   This program is free software: you can redistribute it and/or modify
+   The GNU C Library is free software; you can redistribute it and/or
-   it under the terms of the GNU General Public License as published by
+   modify it under the terms of the GNU Lesser General Public
-   the Free Software Foundation; either version 3 of the License, or
+   License as published by the Free Software Foundation; either
-   (at your option) any later version.
+   version 2.1 of the License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   GNU General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
-#ifdef _LIBC
+#ifndef _LIBC
-# include <getopt.h>
-#else
 # include <config.h>
+#endif
+
 #include "getopt.h"
-#endif
 #include "getopt_int.h"
 
-#include <stdio.h>
-
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#ifdef __GNU_LIBRARY__
-#include <stdlib.h>
-#endif
-
-#ifndef NULL
-#define NULL 0
-#endif
-
 int
 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
 	     const struct option *long_options, int *opt_index)
@@ -80,6 +68,7 @@ _getopt_long_only_r (int argc, char **argv, const char *options,
 #ifdef TEST
 
 #include <stdio.h>
+#include <stdlib.h>
 
 int
 main (int argc, char **argv)