52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
|
/* Invoke open, but avoid some glitches.
|
||
|
|
Copyright (C) 2005 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 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, write to the Free Software Foundation,
|
||
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
|
||
|
|
|
||
|
|
/* Written by Paul Eggert. */
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
# include <config.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "fcntl-safer.h"
|
||
|
|
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include "unistd-safer.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
open_safer (char const *file, int flags, ...)
|
||
|
|
{
|
||
|
|
mode_t mode = 0;
|
||
|
|
|
||
|
|
if (flags & O_CREAT)
|
||
|
|
{
|
||
|
|
va_list ap;
|
||
|
|
va_start (ap, flags);
|
||
|
|
|
||
|
|
/* Assume mode_t promotes to int if and only if it is smaller.
|
||
|
|
This assumption isn't guaranteed by the C standard, but we
|
||
|
|
don't know of any real-world counterexamples. */
|
||
|
|
mode = (sizeof (mode_t) < sizeof (int)
|
||
|
|
? va_arg (ap, int)
|
||
|
|
: va_arg (ap, mode_t));
|
||
|
|
|
||
|
|
va_end (ap);
|
||
|
|
}
|
||
|
|
|
||
|
|
return fd_safer (open (file, flags, mode));
|
||
|
|
}
|