131 lines
4.8 KiB
C
131 lines
4.8 KiB
C
/* Checking macros for unistd functions.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _UNISTD_H
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# error "Never include <bits/unistd.h> directly; use <unistd.h> instead."
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#endif
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extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes,
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size_t __buflen) __wur;
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extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf,
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size_t __nbytes), read) __wur;
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extern __always_inline __wur ssize_t
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read (int __fd, void *__buf, size_t __nbytes)
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{
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if (__bos0 (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
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return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf));
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return __read_alias (__fd, __buf, __nbytes);
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}
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#ifdef __USE_UNIX98
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extern ssize_t __pread_chk (int __fd, void *__buf, size_t __nbytes,
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__off_t __offset, size_t __bufsize) __wur;
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extern ssize_t __pread64_chk (int __fd, void *__buf, size_t __nbytes,
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__off64_t __offset, size_t __bufsize) __wur;
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extern ssize_t __REDIRECT (__pread_alias,
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(int __fd, void *__buf, size_t __nbytes,
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__off_t __offset), pread) __wur;
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extern ssize_t __REDIRECT (__pread64_alias,
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(int __fd, void *__buf, size_t __nbytes,
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__off64_t __offset), pread64) __wur;
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# ifndef __USE_FILE_OFFSET64
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extern __always_inline __wur ssize_t
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pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
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{
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if (__bos0 (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
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return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
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return __pread_alias (__fd, __buf, __nbytes, __offset);
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}
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# else
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extern __always_inline __wur ssize_t
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pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
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{
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if (__bos0 (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
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return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
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return __pread64_alias (__fd, __buf, __nbytes, __offset);
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}
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# endif
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# ifdef __USE_LARGEFILE64
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extern __always_inline __wur ssize_t
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pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
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{
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if (__bos0 (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
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return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
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return __pread64_alias (__fd, __buf, __nbytes, __offset);
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}
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# endif
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#endif
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
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extern int __readlink_chk (__const char *__restrict __path,
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char *__restrict __buf, size_t __len,
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size_t __buflen)
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__THROW __nonnull ((1, 2)) __wur;
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extern int __REDIRECT_NTH (__readlink_alias,
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(__const char *__restrict __path,
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char *__restrict __buf, size_t __len), readlink)
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__nonnull ((1, 2)) __wur;
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extern __always_inline __nonnull ((1, 2)) __wur int
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__NTH (readlink (__const char *__restrict __path, char *__restrict __buf,
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size_t __len))
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{
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if (__bos (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__len) || __len > __bos (__buf)))
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return __readlink_chk (__path, __buf, __len, __bos (__buf));
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return __readlink_alias (__path, __buf, __len);
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}
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#endif
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extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen)
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__THROW __wur;
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extern char *__REDIRECT_NTH (__getcwd_alias,
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(char *__buf, size_t __size), getcwd) __wur;
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extern __always_inline __wur char *
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__NTH (getcwd (char *__buf, size_t __size))
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{
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if (__bos (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__size) || __size > __bos (__buf)))
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return __getcwd_chk (__buf, __size, __bos (__buf));
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return __getcwd_alias (__buf, __size);
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}
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern char *__getwd_chk (char *__buf, size_t buflen)
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__THROW __nonnull ((1)) __wur;
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extern char *__REDIRECT_NTH (__getwd_alias, (char *__buf), getwd)
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__nonnull ((1)) __wur;
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extern __always_inline __nonnull ((1)) __attribute_deprecated__ __wur char *
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__NTH (getwd (char *__buf))
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{
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if (__bos (__buf) != (size_t) -1)
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return __getwd_chk (__buf, __bos (__buf));
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return __getwd_alias (__buf);
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}
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#endif
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