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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;
#define read(fd, buf, nbytes) \
(__bos0 (buf) != (size_t) -1 \
&& (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf)) \
? __read_chk (fd, buf, nbytes, __bos0 (buf)) \
: read (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;
# ifndef __USE_FILE_OFFSET64
# define pread(fd, buf, nbytes, offset) \
(__bos0 (buf) != (size_t) -1 \
&& (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf)) \
? __pread64_chk (fd, buf, nbytes, offset, __bos0 (buf)) \
: pread (fd, buf, nbytes, offset))
# else
# define pread(fd, buf, nbytes, offset) \
(__bos0 (buf) != (size_t) -1 \
&& (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf)) \
? __pread_chk (fd, buf, nbytes, offset, __bos0 (buf)) \
: pread (fd, buf, nbytes, offset))
# endif
# ifdef __USE_LARGEFILE64
# define pread64(fd, buf, nbytes, offset) \
(__bos0 (buf) != (size_t) -1 \
&& (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf)) \
? __pread64_chk (fd, buf, nbytes, offset, __bos0 (buf)) \
: pread64 (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;
# define readlink(path, buf, len) \
(__bos (buf) != (size_t) -1 \
&& (!__builtin_constant_p (len) || (len) > __bos (buf)) \
? __readlink_chk (path, buf, len, __bos (buf)) \
: readlink (path, buf, len))
#endif
extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen)
__THROW __wur;
#define getcwd(buf, size) \
(__bos (buf) != (size_t) -1 \
&& (!__builtin_constant_p (size) || (size) > __bos (buf)) \
? __getcwd_chk (buf, size, buflen) : getcwd (buf, size))
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern char *__getwd_chk (char *__buf, size_t buflen)
__THROW __nonnull ((1)) __attribute_deprecated__ __wur;
#define getwd(buf) \
(__bos (buf) != (size_t) -1 ? __getwd_chk (buf, buflen) : getwd (buf))
#endif
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