48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
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/* Determine whether two stat buffers are known to refer to the same file.
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Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef SAME_INODE_H
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# define SAME_INODE_H 1
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# include <sys/types.h>
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# if defined __VMS && __CRTL_VER < 80200000
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# define SAME_INODE(a, b) \
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((a).st_ino[0] == (b).st_ino[0] \
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&& (a).st_ino[1] == (b).st_ino[1] \
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&& (a).st_ino[2] == (b).st_ino[2] \
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&& (a).st_dev == (b).st_dev)
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# elif defined _WIN32 && ! defined __CYGWIN__
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/* Native Windows. */
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# if _GL_WINDOWS_STAT_INODES
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/* stat() and fstat() set st_dev and st_ino to 0 if information about
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the inode is not available. */
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# define SAME_INODE(a, b) \
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(!((a).st_ino == 0 && (a).st_dev == 0) \
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&& (a).st_ino == (b).st_ino && (a).st_dev == (b).st_dev)
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# else
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/* stat() and fstat() set st_ino to 0 always. */
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# define SAME_INODE(a, b) 0
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# endif
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# else
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# define SAME_INODE(a, b) \
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((a).st_ino == (b).st_ino \
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&& (a).st_dev == (b).st_dev)
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# endif
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#endif
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