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/* Checking macros for stdlib 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 _STDLIB_H
# error "Never include <bits/stdlib.h> directly; use <stdlib.h> instead."
#endif
extern char *__realpath_chk (const char *__restrict __name,
char *__restrict __resolved,
size_t __resolvedlen) __THROW __wur;
extern char *__REDIRECT_NTH (__realpath_alias,
(const char *__restrict __name,
char *__restrict __resolved), realpath) __wur;
extern char *__REDIRECT_NTH (__realpath_chk_warn,
(const char *__restrict __name,
char *__restrict __resolved,
size_t __resolvedlen), __realpath_chk) __wur
__warnattr ("second argument of realpath must be either NULL or at "
"least PATH_MAX bytes long buffer");
__fortify_function __wur char *
__NTH (realpath (const char *__restrict __name, char *__restrict __resolved))
{
size_t sz = __glibc_objsize (__resolved);
if (sz == (size_t) -1)
return __realpath_alias (__name, __resolved);
#if defined _LIBC_LIMITS_H_ && defined PATH_MAX
if (__glibc_unsafe_len (PATH_MAX, sizeof (char), sz))
return __realpath_chk_warn (__name, __resolved, sz);
#endif
return __realpath_chk (__name, __resolved, sz);
}
extern int __ptsname_r_chk (int __fd, char *__buf, size_t __buflen,
size_t __nreal) __THROW __nonnull ((2))
__attr_access ((__write_only__, 2, 3));
extern int __REDIRECT_NTH (__ptsname_r_alias, (int __fd, char *__buf,
size_t __buflen), ptsname_r)
__nonnull ((2)) __attr_access ((__write_only__, 2, 3));
extern int __REDIRECT_NTH (__ptsname_r_chk_warn,
(int __fd, char *__buf, size_t __buflen,
size_t __nreal), __ptsname_r_chk)
__nonnull ((2)) __warnattr ("ptsname_r called with buflen bigger than "
"size of buf");
__fortify_function int
__NTH (ptsname_r (int __fd, char *__buf, size_t __buflen))
{
return __glibc_fortify (ptsname_r, __buflen, sizeof (char),
__glibc_objsize (__buf),
__fd, __buf, __buflen);
}
extern int __wctomb_chk (char *__s, wchar_t __wchar, size_t __buflen)
__THROW __wur;
extern int __REDIRECT_NTH (__wctomb_alias, (char *__s, wchar_t __wchar),
wctomb) __wur;
__fortify_function __wur int
__NTH (wctomb (char *__s, wchar_t __wchar))
{
/* We would have to include <limits.h> to get a definition of MB_LEN_MAX.
But this would only disturb the namespace. So we define our own
version here. */
#define __STDLIB_MB_LEN_MAX 16
#if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX
# error "Assumed value of MB_LEN_MAX wrong"
#endif
if (__glibc_objsize (__s) != (size_t) -1
&& __STDLIB_MB_LEN_MAX > __glibc_objsize (__s))
return __wctomb_chk (__s, __wchar, __glibc_objsize (__s));
return __wctomb_alias (__s, __wchar);
}
extern size_t __mbstowcs_chk (wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len, size_t __dstlen) __THROW
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__mbstowcs_nulldst,
(wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len), mbstowcs)
__attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__mbstowcs_alias,
(wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len), mbstowcs)
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__mbstowcs_chk_warn,
(wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len, size_t __dstlen), __mbstowcs_chk)
__warnattr ("mbstowcs called with dst buffer smaller than len "
"* sizeof (wchar_t)");
__fortify_function size_t
__NTH (mbstowcs (wchar_t *__restrict __dst, const char *__restrict __src,
size_t __len))
{
if (__builtin_constant_p (__dst == NULL) && __dst == NULL)
return __mbstowcs_nulldst (__dst, __src, __len);
else
return __glibc_fortify_n (mbstowcs, __len, sizeof (wchar_t),
__glibc_objsize (__dst), __dst, __src, __len);
}
extern size_t __wcstombs_chk (char *__restrict __dst,
const wchar_t *__restrict __src,
size_t __len, size_t __dstlen) __THROW
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__wcstombs_alias,
(char *__restrict __dst,
const wchar_t *__restrict __src,
size_t __len), wcstombs)
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__wcstombs_chk_warn,
(char *__restrict __dst,
const wchar_t *__restrict __src,
size_t __len, size_t __dstlen), __wcstombs_chk)
__warnattr ("wcstombs called with dst buffer smaller than len");
__fortify_function size_t
__NTH (wcstombs (char *__restrict __dst, const wchar_t *__restrict __src,
size_t __len))
{
return __glibc_fortify (wcstombs, __len, sizeof (char),
__glibc_objsize (__dst),
__dst, __src, __len);
}