glibc/debug/vfprintf_chk.c
Ulrich Drepper 1b1d36792e Update.
2004-11-18  Ulrich Drepper  <drepper@redhat.com>
	* libio/libio.h (_IO_FLAGS2_FORTIFY): Renamed from
	_IO_FLAGS2_CHECK_PERCENT_N.
	* debug/fprintff_chk.c: Adjust all users.
	* debug/printf_chk.c: Likewise.
	* debug/vfprintf_chk.c: Likewise.
	* debug/vprintf_chk.c: Likewise.
	* debug/vsnprintf_chk.c: Likewise.
	* debug/vsprintf_chk.c: Likewise.
	* stdio-common/vfprintf.c: Likewise.  Detect missing %N$ formats.
	* debug/tst-chk1.c: Test detection of missing %N$ formats.
2004-11-18 23:25:46 +00:00

43 lines
1.3 KiB
C

/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdarg.h>
#include <stdio.h>
#include "../libio/libioP.h"
/* Write formatted output to FP from the format string FORMAT. */
int
__vfprintf_chk (FILE *fp, int flag, const char *format, va_list ap)
{
int done;
_IO_acquire_lock (fp);
if (flag > 0)
fp->_flags2 |= _IO_FLAGS2_FORTIFY;
done = vfprintf (fp, format, ap);
if (flag > 0)
fp->_flags2 &= ~_IO_FLAGS2_FORTIFY;
_IO_release_lock (fp);
return done;
}