| 1 | /* provide a replacement openat function
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| 2 | Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software Foundation,
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| 16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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| 17 |
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| 18 | /* written by Jim Meyering */
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| 19 |
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| 20 | #include <fcntl.h>
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| 21 |
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| 22 | #include <sys/types.h>
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| 23 | #include <sys/stat.h>
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| 24 | #include <dirent.h>
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| 25 | #include <unistd.h>
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| 26 | #include <stdbool.h>
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| 27 |
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| 28 | #ifndef __attribute__
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| 29 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
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| 30 | # define __attribute__(x) /* empty */
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| 31 | # endif
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| 32 | #endif
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| 33 |
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| 34 | #ifndef ATTRIBUTE_NORETURN
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| 35 | # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
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| 36 | #endif
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| 37 |
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| 38 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
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| 39 | value exceeds INT_MAX, so its use as an int doesn't conform to the
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| 40 | C standard, and GCC and Sun C complain in some cases. If the bug
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| 41 | is present, undef AT_FDCWD here, so it can be redefined below. */
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| 42 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
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| 43 | # undef AT_FDCWD
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| 44 | #endif
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| 45 |
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| 46 | /* Use the same bit pattern as Solaris 9, but with the proper
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| 47 | signedness. The bit pattern is important, in case this actually is
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| 48 | Solaris with the above workaround. */
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| 49 | #ifndef AT_FDCWD
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| 50 | # define AT_FDCWD (-3041965)
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| 51 | #endif
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| 52 |
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| 53 | /* Use the same values as Solaris 9. This shouldn't matter, but
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| 54 | there's no real reason to differ. */
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| 55 | #ifndef AT_SYMLINK_NOFOLLOW
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| 56 | # define AT_SYMLINK_NOFOLLOW 4096
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