/* Checking macros for stdlib functions.

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Copyright (C) 2005-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _STDLIB_H

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# error "Never include <bits/stdlib.h> directly; use <stdlib.h> instead."

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#endif

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extern char *__realpath_chk (const char *__restrict __name,

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char *__restrict __resolved,

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size_t __resolvedlen) __THROW __wur;

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extern char *__REDIRECT_NTH (__realpath_alias,

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(const char *__restrict __name,

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char *__restrict __resolved), realpath) __wur;

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extern char *__REDIRECT_NTH (__realpath_chk_warn,

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(const char *__restrict __name,

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char *__restrict __resolved,

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size_t __resolvedlen), __realpath_chk) __wur

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__warnattr ("second argument of realpath must be either NULL or at "

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"least PATH_MAX bytes long buffer");

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__fortify_function __wur char *

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__NTH (realpath (const char *__restrict __name, char *__restrict __resolved))

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{

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size_t sz = __glibc_objsize (__resolved);

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if (sz == (size_t) -1)

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return __realpath_alias (__name, __resolved);

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#if defined _LIBC_LIMITS_H_ && defined PATH_MAX

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if (__glibc_unsafe_len (PATH_MAX, sizeof (char), sz))

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return __realpath_chk_warn (__name, __resolved, sz);

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#endif

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return __realpath_chk (__name, __resolved, sz);

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}

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extern int __ptsname_r_chk (int __fd, char *__buf, size_t __buflen,

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size_t __nreal) __THROW __nonnull ((2));

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extern int __REDIRECT_NTH (__ptsname_r_alias, (int __fd, char *__buf,

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size_t __buflen), ptsname_r)

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__nonnull ((2));

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extern int __REDIRECT_NTH (__ptsname_r_chk_warn,

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(int __fd, char *__buf, size_t __buflen,

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size_t __nreal), __ptsname_r_chk)

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__nonnull ((2)) __warnattr ("ptsname_r called with buflen bigger than "

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"size of buf");

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__fortify_function int

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__NTH (ptsname_r (int __fd, char *__buf, size_t __buflen))

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{

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return __glibc_fortify (ptsname_r, __buflen, sizeof (char),

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__glibc_objsize (__buf),

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__fd, __buf, __buflen);

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}

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extern int __wctomb_chk (char *__s, wchar_t __wchar, size_t __buflen)

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__THROW __wur;

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extern int __REDIRECT_NTH (__wctomb_alias, (char *__s, wchar_t __wchar),

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wctomb) __wur;

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__fortify_function __wur int

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__NTH (wctomb (char *__s, wchar_t __wchar))

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{

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/* We would have to include <limits.h> to get a definition of MB_LEN_MAX.

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But this would only disturb the namespace. So we define our own

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version here. */

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#define __STDLIB_MB_LEN_MAX 16

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#if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX

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# error "Assumed value of MB_LEN_MAX wrong"

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#endif

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if (__glibc_objsize (__s) != (size_t) -1

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&& __STDLIB_MB_LEN_MAX > __glibc_objsize (__s))

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return __wctomb_chk (__s, __wchar, __glibc_objsize (__s));

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return __wctomb_alias (__s, __wchar);

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}

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extern size_t __mbstowcs_chk (wchar_t *__restrict __dst,

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const char *__restrict __src,

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size_t __len, size_t __dstlen) __THROW;

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extern size_t __REDIRECT_NTH (__mbstowcs_alias,

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(wchar_t *__restrict __dst,

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const char *__restrict __src,

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size_t __len), mbstowcs);

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extern size_t __REDIRECT_NTH (__mbstowcs_chk_warn,

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(wchar_t *__restrict __dst,

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const char *__restrict __src,

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size_t __len, size_t __dstlen), __mbstowcs_chk)

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__warnattr ("mbstowcs called with dst buffer smaller than len "

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"* sizeof (wchar_t)");

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__fortify_function size_t

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__NTH (mbstowcs (wchar_t *__restrict __dst, const char *__restrict __src,

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size_t __len))

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{

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return __glibc_fortify_n (mbstowcs, __len, sizeof (wchar_t),

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__glibc_objsize (__dst),

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__dst, __src, __len);

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}

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extern size_t __wcstombs_chk (char *__restrict __dst,

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const wchar_t *__restrict __src,

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size_t __len, size_t __dstlen) __THROW;

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extern size_t __REDIRECT_NTH (__wcstombs_alias,

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(char *__restrict __dst,

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const wchar_t *__restrict __src,

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size_t __len), wcstombs);

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extern size_t __REDIRECT_NTH (__wcstombs_chk_warn,

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(char *__restrict __dst,

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const wchar_t *__restrict __src,

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size_t __len, size_t __dstlen), __wcstombs_chk)

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__warnattr ("wcstombs called with dst buffer smaller than len");

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__fortify_function size_t

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__NTH (wcstombs (char *__restrict __dst, const wchar_t *__restrict __src,

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size_t __len))

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{

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return __glibc_fortify (wcstombs, __len, sizeof (char),

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__glibc_objsize (__dst),

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__dst, __src, __len);

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}

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