syslog: Improve fortify with clang

[thirdparty/glibc.git] / misc / bits / syslog.h

/* Checking macros for syslog functions.
   Copyright (C) 2005-2024 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/>.  */

#ifndef _SYS_SYSLOG_H
# error "Never include <bits/syslog.h> directly; use <sys/syslog.h> instead."
#endif

#include <bits/syslog-decl.h>

#include <bits/floatn.h>
#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# include <bits/syslog-ldbl.h>
#endif

/* The following functions must be used only after applying all asm
   redirections, e.g. long double asm redirections.  */

#ifdef __va_arg_pack
__fortify_function void
syslog (int __pri, const char *__fmt, ...)
{
  __syslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
#elif __fortify_use_clang && defined __USE_MISC
__fortify_function_error_function __attribute_overloadable__ void
syslog (int __pri, __fortify_clang_overload_arg (const char *, , __fmt), ...)
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  __vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __fortify_ap);
  __builtin_va_end (__fortify_ap);
}
#elif !defined __cplusplus
# define syslog(pri, ...) \
  __syslog_chk (pri, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#endif


#ifdef __USE_MISC
__fortify_function __attribute_overloadable__ void
vsyslog (int __pri, __fortify_clang_overload_arg (const char *, ,__fmt),
	 __gnuc_va_list __ap)
{
  __vsyslog_chk (__pri,  __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
#endif