New upstream version 2.3.4
This commit is contained in:
parent
e7bdd1c6c6
commit
de72f6f588
556 changed files with 90432 additions and 53391 deletions
460
gl/stat-w32.c
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460
gl/stat-w32.c
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/* Core of implementation of fstat and stat for native Windows.
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Copyright (C) 2017-2023 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible. */
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#include <config.h>
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#if defined _WIN32 && ! defined __CYGWIN__
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/* Attempt to make <windows.h> define FILE_ID_INFO.
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But ensure that the redefinition of _WIN32_WINNT does not make us assume
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Windows Vista or newer when building for an older version of Windows. */
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#if HAVE_SDKDDKVER_H
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# include <sdkddkver.h>
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# if _WIN32_WINNT >= _WIN32_WINNT_VISTA
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# define WIN32_ASSUME_VISTA 1
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# else
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# define WIN32_ASSUME_VISTA 0
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# endif
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# if !defined _WIN32_WINNT || (_WIN32_WINNT < _WIN32_WINNT_WIN8)
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# undef _WIN32_WINNT
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# define _WIN32_WINNT _WIN32_WINNT_WIN8
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# endif
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#else
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# define WIN32_ASSUME_VISTA (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <limits.h>
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#include <string.h>
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#include <unistd.h>
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#include <windows.h>
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/* Specification. */
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#include "stat-w32.h"
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#include "pathmax.h"
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/* Don't assume that UNICODE is not defined. */
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#undef LoadLibrary
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#define LoadLibrary LoadLibraryA
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#undef GetFinalPathNameByHandle
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#define GetFinalPathNameByHandle GetFinalPathNameByHandleA
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/* Older mingw headers do not define VOLUME_NAME_NONE. */
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#ifndef VOLUME_NAME_NONE
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# define VOLUME_NAME_NONE 4
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#endif
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#if !WIN32_ASSUME_VISTA
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/* Avoid warnings from gcc -Wcast-function-type. */
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# define GetProcAddress \
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(void *) GetProcAddress
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# if _GL_WINDOWS_STAT_INODES == 2
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/* GetFileInformationByHandleEx was introduced only in Windows Vista. */
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typedef DWORD (WINAPI * GetFileInformationByHandleExFuncType) (HANDLE hFile,
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FILE_INFO_BY_HANDLE_CLASS fiClass,
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LPVOID lpBuffer,
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DWORD dwBufferSize);
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static GetFileInformationByHandleExFuncType GetFileInformationByHandleExFunc = NULL;
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# endif
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/* GetFinalPathNameByHandle was introduced only in Windows Vista. */
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typedef DWORD (WINAPI * GetFinalPathNameByHandleFuncType) (HANDLE hFile,
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LPSTR lpFilePath,
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DWORD lenFilePath,
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DWORD dwFlags);
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static GetFinalPathNameByHandleFuncType GetFinalPathNameByHandleFunc = NULL;
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static BOOL initialized = FALSE;
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static void
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initialize (void)
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{
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HMODULE kernel32 = LoadLibrary ("kernel32.dll");
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if (kernel32 != NULL)
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{
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# if _GL_WINDOWS_STAT_INODES == 2
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GetFileInformationByHandleExFunc =
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(GetFileInformationByHandleExFuncType) GetProcAddress (kernel32, "GetFileInformationByHandleEx");
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# endif
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GetFinalPathNameByHandleFunc =
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(GetFinalPathNameByHandleFuncType) GetProcAddress (kernel32, "GetFinalPathNameByHandleA");
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}
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initialized = TRUE;
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}
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#else
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# define GetFileInformationByHandleExFunc GetFileInformationByHandleEx
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# define GetFinalPathNameByHandleFunc GetFinalPathNameByHandle
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#endif
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/* Converts a FILETIME to GMT time since 1970-01-01 00:00:00. */
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#if _GL_WINDOWS_STAT_TIMESPEC
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struct timespec
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_gl_convert_FILETIME_to_timespec (const FILETIME *ft)
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{
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struct timespec result;
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/* FILETIME: <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-filetime> */
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unsigned long long since_1601 =
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((unsigned long long) ft->dwHighDateTime << 32)
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| (unsigned long long) ft->dwLowDateTime;
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if (since_1601 == 0)
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{
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result.tv_sec = 0;
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result.tv_nsec = 0;
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}
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else
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{
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/* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
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leap years, in total 134774 days. */
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unsigned long long since_1970 =
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since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
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result.tv_sec = since_1970 / (unsigned long long) 10000000;
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result.tv_nsec = (unsigned long) (since_1970 % (unsigned long long) 10000000) * 100;
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}
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return result;
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}
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#else
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time_t
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_gl_convert_FILETIME_to_POSIX (const FILETIME *ft)
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{
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/* FILETIME: <https://docs.microsoft.com/en-us/windows/desktop/api/minwinbase/ns-minwinbase-filetime> */
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unsigned long long since_1601 =
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((unsigned long long) ft->dwHighDateTime << 32)
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| (unsigned long long) ft->dwLowDateTime;
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if (since_1601 == 0)
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return 0;
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else
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{
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/* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
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leap years, in total 134774 days. */
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unsigned long long since_1970 =
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since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
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return since_1970 / (unsigned long long) 10000000;
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}
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}
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#endif
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/* Fill *BUF with information about the file designated by H.
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PATH is the file name, if known, otherwise NULL.
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Return 0 if successful, or -1 with errno set upon failure. */
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int
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_gl_fstat_by_handle (HANDLE h, const char *path, struct stat *buf)
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{
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/* GetFileType
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfiletype> */
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DWORD type = GetFileType (h);
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if (type == FILE_TYPE_DISK)
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{
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#if !WIN32_ASSUME_VISTA
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if (!initialized)
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initialize ();
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#endif
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/* st_mode can be determined through
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GetFileAttributesEx
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
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or through
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GetFileInformationByHandle
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
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or through
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GetFileInformationByHandleEx with argument FileBasicInfo
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_basic_info>
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The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher. */
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BY_HANDLE_FILE_INFORMATION info;
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if (! GetFileInformationByHandle (h, &info))
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goto failed;
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/* Test for error conditions before starting to fill *buf. */
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if (sizeof (buf->st_size) <= 4 && info.nFileSizeHigh > 0)
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{
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errno = EOVERFLOW;
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return -1;
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}
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#if _GL_WINDOWS_STAT_INODES
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/* st_ino can be determined through
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GetFileInformationByHandle
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
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as 64 bits, or through
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GetFileInformationByHandleEx with argument FileIdInfo
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_id_info>
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as 128 bits.
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The latter requires -D_WIN32_WINNT=_WIN32_WINNT_WIN8 or higher. */
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/* Experiments show that GetFileInformationByHandleEx does not provide
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much more information than GetFileInformationByHandle:
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* The dwVolumeSerialNumber from GetFileInformationByHandle is equal
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to the low 32 bits of the 64-bit VolumeSerialNumber from
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GetFileInformationByHandleEx, and is apparently sufficient for
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identifying the device.
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* The nFileIndex from GetFileInformationByHandle is equal to the low
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64 bits of the 128-bit FileId from GetFileInformationByHandleEx,
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and the high 64 bits of this 128-bit FileId are zero.
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* On a FAT file system, GetFileInformationByHandleEx fails with error
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ERROR_INVALID_PARAMETER, whereas GetFileInformationByHandle
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succeeds.
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* On a CIFS/SMB file system, GetFileInformationByHandleEx fails with
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error ERROR_INVALID_LEVEL, whereas GetFileInformationByHandle
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succeeds. */
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# if _GL_WINDOWS_STAT_INODES == 2
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if (GetFileInformationByHandleExFunc != NULL)
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{
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FILE_ID_INFO id;
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if (GetFileInformationByHandleExFunc (h, FileIdInfo, &id, sizeof (id)))
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{
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buf->st_dev = id.VolumeSerialNumber;
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static_assert (sizeof (ino_t) == sizeof (id.FileId));
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memcpy (&buf->st_ino, &id.FileId, sizeof (ino_t));
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goto ino_done;
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}
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else
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{
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switch (GetLastError ())
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{
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case ERROR_INVALID_PARAMETER: /* older Windows version, or FAT */
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case ERROR_INVALID_LEVEL: /* CIFS/SMB file system */
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goto fallback;
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default:
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goto failed;
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}
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}
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}
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fallback: ;
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/* Fallback for older Windows versions. */
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buf->st_dev = info.dwVolumeSerialNumber;
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buf->st_ino._gl_ino[0] = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
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buf->st_ino._gl_ino[1] = 0;
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ino_done: ;
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# else /* _GL_WINDOWS_STAT_INODES == 1 */
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buf->st_dev = info.dwVolumeSerialNumber;
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buf->st_ino = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
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# endif
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#else
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/* st_ino is not wide enough for identifying a file on a device.
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Without st_ino, st_dev is pointless. */
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buf->st_dev = 0;
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buf->st_ino = 0;
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#endif
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/* st_mode. */
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unsigned int mode =
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/* XXX How to handle FILE_ATTRIBUTE_REPARSE_POINT ? */
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((info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? _S_IFDIR | S_IEXEC_UGO : _S_IFREG)
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| S_IREAD_UGO
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| ((info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) ? 0 : S_IWRITE_UGO);
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if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
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{
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/* Determine whether the file is executable by looking at the file
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name suffix.
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If the file name is already known, use it. Otherwise, for
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non-empty files, it can be determined through
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GetFinalPathNameByHandle
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfinalpathnamebyhandlea>
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or through
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GetFileInformationByHandleEx with argument FileNameInfo
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_name_info>
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Both require -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher. */
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if (info.nFileSizeHigh > 0 || info.nFileSizeLow > 0)
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{
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char fpath[PATH_MAX];
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if (path != NULL
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|| (GetFinalPathNameByHandleFunc != NULL
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&& GetFinalPathNameByHandleFunc (h, fpath, sizeof (fpath), VOLUME_NAME_NONE)
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< sizeof (fpath)
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&& (path = fpath, 1)))
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{
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const char *last_dot = NULL;
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const char *p;
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for (p = path; *p != '\0'; p++)
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if (*p == '.')
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last_dot = p;
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if (last_dot != NULL)
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{
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const char *suffix = last_dot + 1;
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if (_stricmp (suffix, "exe") == 0
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|| _stricmp (suffix, "bat") == 0
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|| _stricmp (suffix, "cmd") == 0
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|| _stricmp (suffix, "com") == 0)
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mode |= S_IEXEC_UGO;
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}
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}
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else
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/* Cannot determine file name. Pretend that it is executable. */
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mode |= S_IEXEC_UGO;
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}
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}
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buf->st_mode = mode;
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/* st_nlink can be determined through
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GetFileInformationByHandle
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
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or through
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GetFileInformationByHandleEx with argument FileStandardInfo
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
|
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<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_standard_info>
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The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher. */
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buf->st_nlink = (info.nNumberOfLinks > SHRT_MAX ? SHRT_MAX : info.nNumberOfLinks);
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|
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/* There's no easy way to map the Windows SID concept to an integer. */
|
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buf->st_uid = 0;
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buf->st_gid = 0;
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|
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/* st_rdev is irrelevant for normal files and directories. */
|
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buf->st_rdev = 0;
|
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|
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/* st_size can be determined through
|
||||
GetFileSizeEx
|
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfilesizeex>
|
||||
or through
|
||||
GetFileAttributesEx
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
|
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
|
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or through
|
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GetFileInformationByHandle
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
|
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<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
|
||||
or through
|
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GetFileInformationByHandleEx with argument FileStandardInfo
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_standard_info>
|
||||
The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher. */
|
||||
if (sizeof (buf->st_size) <= 4)
|
||||
/* Range check already done above. */
|
||||
buf->st_size = info.nFileSizeLow;
|
||||
else
|
||||
buf->st_size = ((long long) info.nFileSizeHigh << 32) | (long long) info.nFileSizeLow;
|
||||
|
||||
/* st_atime, st_mtime, st_ctime can be determined through
|
||||
GetFileTime
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfiletime>
|
||||
or through
|
||||
GetFileAttributesEx
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileattributesexa>
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_win32_file_attribute_data>
|
||||
or through
|
||||
GetFileInformationByHandle
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-getfileinformationbyhandle>
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/ns-fileapi-_by_handle_file_information>
|
||||
or through
|
||||
GetFileInformationByHandleEx with argument FileBasicInfo
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-getfileinformationbyhandleex>
|
||||
<https://docs.microsoft.com/en-us/windows/desktop/api/winbase/ns-winbase-_file_basic_info>
|
||||
The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher. */
|
||||
#if _GL_WINDOWS_STAT_TIMESPEC
|
||||
buf->st_atim = _gl_convert_FILETIME_to_timespec (&info.ftLastAccessTime);
|
||||
buf->st_mtim = _gl_convert_FILETIME_to_timespec (&info.ftLastWriteTime);
|
||||
buf->st_ctim = _gl_convert_FILETIME_to_timespec (&info.ftCreationTime);
|
||||
#else
|
||||
buf->st_atime = _gl_convert_FILETIME_to_POSIX (&info.ftLastAccessTime);
|
||||
buf->st_mtime = _gl_convert_FILETIME_to_POSIX (&info.ftLastWriteTime);
|
||||
buf->st_ctime = _gl_convert_FILETIME_to_POSIX (&info.ftCreationTime);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
else if (type == FILE_TYPE_CHAR || type == FILE_TYPE_PIPE)
|
||||
{
|
||||
buf->st_dev = 0;
|
||||
#if _GL_WINDOWS_STAT_INODES == 2
|
||||
buf->st_ino._gl_ino[0] = buf->st_ino._gl_ino[1] = 0;
|
||||
#else
|
||||
buf->st_ino = 0;
|
||||
#endif
|
||||
buf->st_mode = (type == FILE_TYPE_PIPE ? _S_IFIFO : _S_IFCHR);
|
||||
buf->st_nlink = 1;
|
||||
buf->st_uid = 0;
|
||||
buf->st_gid = 0;
|
||||
buf->st_rdev = 0;
|
||||
if (type == FILE_TYPE_PIPE)
|
||||
{
|
||||
/* PeekNamedPipe
|
||||
<https://msdn.microsoft.com/en-us/library/aa365779.aspx> */
|
||||
DWORD bytes_available;
|
||||
if (PeekNamedPipe (h, NULL, 0, NULL, &bytes_available, NULL))
|
||||
buf->st_size = bytes_available;
|
||||
else
|
||||
buf->st_size = 0;
|
||||
}
|
||||
else
|
||||
buf->st_size = 0;
|
||||
#if _GL_WINDOWS_STAT_TIMESPEC
|
||||
buf->st_atim.tv_sec = 0; buf->st_atim.tv_nsec = 0;
|
||||
buf->st_mtim.tv_sec = 0; buf->st_mtim.tv_nsec = 0;
|
||||
buf->st_ctim.tv_sec = 0; buf->st_ctim.tv_nsec = 0;
|
||||
#else
|
||||
buf->st_atime = 0;
|
||||
buf->st_mtime = 0;
|
||||
buf->st_ctime = 0;
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
failed:
|
||||
{
|
||||
DWORD error = GetLastError ();
|
||||
#if 0
|
||||
fprintf (stderr, "_gl_fstat_by_handle error 0x%x\n", (unsigned int) error);
|
||||
#endif
|
||||
switch (error)
|
||||
{
|
||||
case ERROR_ACCESS_DENIED:
|
||||
case ERROR_SHARING_VIOLATION:
|
||||
errno = EACCES;
|
||||
break;
|
||||
|
||||
case ERROR_OUTOFMEMORY:
|
||||
errno = ENOMEM;
|
||||
break;
|
||||
|
||||
case ERROR_WRITE_FAULT:
|
||||
case ERROR_READ_FAULT:
|
||||
case ERROR_GEN_FAILURE:
|
||||
errno = EIO;
|
||||
break;
|
||||
|
||||
default:
|
||||
errno = EINVAL;
|
||||
break;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
/* This declaration is solely to ensure that after preprocessing
|
||||
this file is never empty. */
|
||||
typedef int dummy;
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue