46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Copyright (C) 1991-2022 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/>. */
|
|
|
|
#include <stdarg.h>
|
|
#include <libio/libioP.h>
|
|
|
|
|
|
/* Write formatted output into S, according to the format string FORMAT. */
|
|
int
|
|
___sprintf_chk (char *s, int flag, size_t slen, const char *format, ...)
|
|
{
|
|
/* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
|
|
can only come from read-only format strings. */
|
|
unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
|
|
va_list ap;
|
|
int ret;
|
|
|
|
/* Regardless of the value of flag, let __vsprintf_internal know that
|
|
this is a call from *printf_chk. */
|
|
mode |= PRINTF_CHK;
|
|
|
|
if (slen == 0)
|
|
__chk_fail ();
|
|
|
|
va_start (ap, format);
|
|
ret = __vsprintf_internal (s, slen, format, ap, mode);
|
|
va_end (ap);
|
|
|
|
return ret;
|
|
}
|
|
ldbl_strong_alias (___sprintf_chk, __sprintf_chk)
|