/* Checking macros for stdlib functions. Copyright (C) 2005-2021 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); }