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/* Checking macros for unistd functions.
Copyright (C) 2005 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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 __inline __wur ssize_t
read (int __fd, void *__buf, size_t __nbytes)
{
if (__bos0 (__buf) != (size_t) -1
&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
return __read_chk (__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;
# ifndef __USE_FILE_OFFSET64
extern __inline __wur ssize_t
pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
{
if (__bos0 (__buf) != (size_t) -1
&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
return __pread_alias (__fd, __buf, __nbytes, __offset);
}
# else
extern __inline __wur ssize_t
pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
{
if (__bos0 (__buf) != (size_t) -1
&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
return __pread64_alias (__fd, __buf, __nbytes, __offset);
}
# endif
# ifdef __USE_LARGEFILE64
extern __inline __wur ssize_t
pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
{
if (__bos0 (__buf) != (size_t) -1
&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
return __pread64_alias (__fd, __buf, __nbytes, __offset);
}
# endif
#endif
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
extern int __readlink_chk (__const char *__restrict __path,
char *__restrict __buf, size_t __len,
size_t __buflen)
__THROW __nonnull ((1, 2)) __wur;
extern int __REDIRECT_NTH (__readlink_alias,
(__const char *__restrict __path,
char *__restrict __buf, size_t __len), readlink)
__nonnull ((1, 2)) __wur;
extern __inline __nonnull ((1, 2)) __wur int
__NTH (readlink (__const char *__restrict __path, char *__restrict __buf,
size_t __len))
{
if (__bos (__buf) != (size_t) -1
&& (!__builtin_constant_p (__len) || __len > __bos (__buf)))
return __readlink_chk (__path, __buf, __len, __bos (__buf));
return __readlink_alias (__path, __buf, __len);
}
#endif
extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen)
__THROW __wur;
extern char *__REDIRECT_NTH (__getcwd_alias,
(char *__buf, size_t __size), getcwd) __wur;
extern __inline __wur char *
__NTH (getcwd (char *__buf, size_t __size))
{
if (__bos (__buf) != (size_t) -1
&& (!__builtin_constant_p (__size) || __size > __bos (__buf)))
return __getcwd_chk (__buf, __size, __bos (__buf));
return __getcwd_alias (__buf, __size);
}
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern char *__getwd_chk (char *__buf, size_t buflen)
__THROW __nonnull ((1)) __wur;
extern char *__REDIRECT_NTH (__getwd_alias, (char *__buf), getwd)
__nonnull ((1)) __wur;
extern __inline __nonnull ((1)) __attribute_deprecated__ __wur char *
__NTH (getwd (char *__buf))
{
if (__bos (__buf) != (size_t) -1)
return __getwd_chk (__buf, __bos (__buf));
return __getwd_alias (__buf);
}
#endif
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