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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 void __chk_fail (void) __attribute__((noreturn));
#define read(fd, buf, nbytes) \
(__extension__ \
({ size_t __nbytes_val = (nbytes); \
if (__bos0 (buf) != (size_t) -1 && __bos0 (buf) < __nbytes_val) \
__chk_fail (); \
read (fd, buf, __nbytes_val); }))
#ifdef __USE_UNIX98
# define pread(fd, buf, nbytes, offset) \
(__extension__ \
({ size_t __nbytes_val = (nbytes); \
if (__bos0 (buf) != (size_t) -1 && __bos0 (buf) < __nbytes_val) \
__chk_fail (); \
pread (fd, buf, __nbytes_val, offset); }))
# ifdef __USE_LARGEFILE64
# define pread64(fd, buf, nbytes, offset) \
(__extension__ \
({ size_t __nbytes_val = (nbytes); \
if (__bos0 (buf) != (size_t) -1 && __bos0 (buf) < __nbytes_val) \
__chk_fail (); \
pread64 (fd, buf, __nbytes_val, offset); }))
# endif
#endif
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
# define readlink(path, buf, len) \
(__extension__ \
({ size_t __len_val = (len); \
if (__bos (buf) != (size_t) -1 && __bos (buf) < __len_val) \
__chk_fail (); \
readlink (path, buf, __len_val); }))
#endif
#define getcwd(buf, size) \
(__extension__ \
({ size_t __size_val = (size); \
if (__bos (buf) != (size_t) -1 && __bos (buf) < __size_val) \
__chk_fail (); \
getcwd (buf, __size_val); }))
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