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/*
* Copyright (C) 2015-2016 Dimitris Papastamos <sin@2f30.org>
* Copyright (C) 2022 q66 <q66@chimera-linux.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _FORTIFY_UNISTD_H
#define _FORTIFY_UNISTD_H
#if !defined(__cplusplus) && !defined(__clang__)
__extension__
#endif
#include_next <unistd.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
#include "fortify-headers.h"
#ifdef __cplusplus
extern "C" {
#endif
#undef confstr
#undef getcwd
#undef getgroups
#undef gethostname
#undef getlogin_r
#undef pread
#undef read
#undef readlink
#undef readlinkat
#undef ttyname_r
#undef write
__access(write_only, 2, 3)
_FORTIFY_FN(confstr) size_t confstr(int __n, char * _FORTIFY_POS0 __s, size_t __l)
{
size_t __b = __bos(__s, 0);
size_t __r = __orig_confstr(__n, __s, __b > __l ? __l : __b);
if (__l > __b && __r > __b)
__builtin_trap();
return __r;
}
__access(write_only, 1, 2)
_FORTIFY_FN(getcwd) char *getcwd(char * _FORTIFY_POS0 __s, size_t __l)
{
size_t __b = __bos(__s, 0);
if (__l > __b)
__builtin_trap();
return __orig_getcwd(__s, __l);
}
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#undef getdomainname
__access(write_only, 1, 2)
_FORTIFY_FN(getdomainname) int getdomainname(char * _FORTIFY_POS0 __s, size_t __l)
{
size_t __b = __bos(__s, 0);
if (__l > __b)
__builtin_trap();
return __orig_getdomainname(__s, __l);
}
#endif
_FORTIFY_FN(getgroups) int getgroups(int __l, gid_t * _FORTIFY_POS0 __s)
{
size_t __b = __bos(__s, 0);
if (__l > 0 && (unsigned)__l > __b / sizeof(gid_t))
__builtin_trap();
return __orig_getgroups(__l, __s);
}
__access(write_only, 1, 2)
_FORTIFY_FN(gethostname) int gethostname(char * _FORTIFY_POS0 __s, size_t __l)
{
size_t __b = __bos(__s, 0);
if (__l > __b)
__builtin_trap();
return __orig_gethostname(__s, __l);
}
__access(write_only, 1, 2)
_FORTIFY_FN(getlogin_r) int getlogin_r(char * _FORTIFY_POS0 __s, size_t __l)
{
size_t __b = __bos(__s, 0);
if (__l > __b)
__builtin_trap();
return __orig_getlogin_r(__s, __l);
}
_FORTIFY_FN(pread) ssize_t pread(int __f, void * _FORTIFY_POS0 __s,
size_t __n, off_t __o)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_pread(__f, __s, __n, __o);
}
__access(write_only, 2, 3)
_FORTIFY_FN(read) ssize_t read(int __f, void * _FORTIFY_POS0 __s, size_t __n)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_read(__f, __s, __n);
}
__access(write_only, 2, 3)
_FORTIFY_FN(readlink) ssize_t readlink(const char *__p,
char * _FORTIFY_POS0 __s, size_t __n)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_readlink(__p, __s, __n);
}
__access(write_only, 3, 4)
_FORTIFY_FN(readlinkat) ssize_t readlinkat(int __f, const char *__p,
char * _FORTIFY_POS0 __s, size_t __n)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_readlinkat(__f, __p, __s, __n);
}
__access(write_only, 2, 3)
_FORTIFY_FN(ttyname_r) int ttyname_r(int __f, char * _FORTIFY_POS0 __s,
size_t __n)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_ttyname_r(__f, __s, __n);
}
__access(read_only, 2, 3)
_FORTIFY_FN(write) ssize_t write(int __f, const void * _FORTIFY_POS0 __s,
size_t __n)
{
size_t __b = __bos(__s, 0);
if (__n > __b)
__builtin_trap();
return __orig_write(__f, __s, __n);
}
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#undef swab
_FORTIFY_FN(swab) void swab(const void * _FORTIFY_POS0 __os,
void * _FORTIFY_POS0 __od, ssize_t __n)
{
size_t __bs = __bos(__os, 0);
size_t __bd = __bos(__od, 0);
if ((size_t)__n > __bs || (size_t)__n > __bd)
__builtin_trap();
return __orig_swab(__os, __od, __n);
}
#endif
#ifdef __cplusplus
}
#endif
#endif
#endif
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