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/* Checking macros for unistd functions.
Copyright (C) 2005-2016 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
<http://www.gnu.org/licenses/>. */
#ifndef _UNISTD_H
# error "Never include <bits/unistd.h> directly; use <unistd.h> instead."
#endif
extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes,
size_t __buflen) __wur;
extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf,
size_t __nbytes), read) __wur;
extern ssize_t __REDIRECT (__read_chk_warn,
(int __fd, void *__buf, size_t __nbytes,
size_t __buflen), __read_chk)
__wur __warnattr ("read called with bigger length than size of "
"the destination buffer");
__fortify_function __wur ssize_t
read (int __fd, void *__buf, size_t __nbytes)
{
if (__bos0 (__buf) != (size_t) -1)
{
if (!__builtin_constant_p (__nbytes))
return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf));
if (__nbytes > __bos0 (__buf))
return __read_chk_warn (__fd, __buf, __nbytes, __bos0 (__buf));
}
return __read_alias (__fd, __buf, __nbytes);
}
#ifdef __USE_UNIX98
extern ssize_t __pread_chk (int __fd, void *__buf, size_t __nbytes,
__off_t __offset, size_t __bufsize) __wur;
extern ssize_t __pread64_chk (int __fd, void *__buf, size_t __nbytes,
__off64_t __offset, size_t __bufsize) __wur;
extern ssize_t __REDIRECT (__pread_alias,
(int __fd, void *__buf, size_t __nbytes,
__off_t __offset), pread) __wur;
extern ssize_t __REDIRECT (__pread64_alias,
(int __fd, void *__buf, size_t __nbytes,
__off64_t __offset), pread64) __wur;
extern ssize_t __REDIRECT (__pread_chk_warn,
(int __fd, void *__buf, size_t __nbytes,
__off_t __offset, size_t __bufsize), __pread_chk)
__wur __warnattr ("pread called with bigger length than size of "
"the destination buffer");
extern ssize_t __REDIRECT (__pread64_chk_warn,
(int __fd, void *__buf, size_t __nbytes,
__off64_t __offset, size_t __bufsize),
__pread64_chk)
__wur __warnattr ("pread64 called with bigger length than size of "
"the destination buffer");
# ifndef __USE_FILE_OFFSET64
__fortify_function __wur ssize_t
pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
{
if (__bos0 (__buf) != (size_t) -1)
{
if (!__builtin_constant_p (__nbytes))
return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
if ( __nbytes > __bos0 (__buf))
return __pread_chk_warn (__fd, __buf, __nbytes, __offset,
__bos0 (__buf));
}
return __pread_alias (__fd, __buf, __nbytes, __offset);
}
# else
__fortify_function __wur ssize_t
pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
{
if (__bos0 (__buf) != (size_t) -1)
{
if (!__builtin_constant_p (__nbytes))
return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
if ( __nbytes > __bos0 (__buf))
return __pread64_chk_warn (__fd, __buf, __nbytes, __offset,
__bos0 (__buf));
}
return __pread64_alias (__fd, __buf, __nbytes, __offset);
}
# endif
# ifdef __USE_LARGEFILE64
__fortify_function __wur ssize_t
pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
{
if (__bos0 (__buf) != (size_t) -1)
{
if (!__builtin_constant_p (__nbytes))
return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
if ( __nbytes > __bos0 (__buf))
return __pread64_chk_warn (__fd, __buf, __nbytes
|
