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85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/* Checking macros for unistd functions.
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Copyright (C) 2005, 2009 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _SSP_UNISTD_H
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#define _SSP_UNISTD_H 1
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#include <ssp.h>
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#include_next <unistd.h>
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#if __SSP_FORTIFY_LEVEL > 0
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#undef read
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#undef readlink
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#undef getcwd
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extern ssize_t __SSP_REDIRECT (__read_alias, (int __fd, void *__buf,
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size_t __nbytes), read);
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extern inline __attribute__((__always_inline__)) ssize_t
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read (int __fd, void *__buf, size_t __nbytes)
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{
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if (__ssp_bos0 (__buf) != (size_t) -1 && __nbytes > __ssp_bos0 (__buf))
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__chk_fail ();
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return __read_alias (__fd, __buf, __nbytes);
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}
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extern int __SSP_REDIRECT (__readlink_alias,
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(const char *__restrict__ __path,
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char *__restrict__ __buf, size_t __len),
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readlink);
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extern inline __attribute__((__always_inline__)) int
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readlink (const char *__restrict__ __path, char *__restrict__ __buf,
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size_t __len)
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{
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if (__ssp_bos (__buf) != (size_t) -1 && __len > __ssp_bos (__buf))
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__chk_fail ();
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return __readlink_alias (__path, __buf, __len);
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}
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extern char *__SSP_REDIRECT (__getcwd_alias,
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(char *__buf, size_t __size), getcwd);
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extern inline __attribute__((__always_inline__)) char *
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getcwd (char *__buf, size_t __size)
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{
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if (__ssp_bos (__buf) != (size_t) -1 && __size > __ssp_bos (__buf))
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__chk_fail ();
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return __getcwd_alias (__buf, __size);
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}
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#endif /* __SSP_FORTIFY_LEVEL > 0 */
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#endif /* _SSP_UNISTD_H */
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