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/* Determine whether two stat buffers are known to refer to the same file.
Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef SAME_INODE_H
# define SAME_INODE_H 1
# include <sys/types.h>
# if defined __VMS && __CRTL_VER < 80200000
# define SAME_INODE(a, b) \
((a).st_ino[0] == (b).st_ino[0] \
&& (a).st_ino[1] == (b).st_ino[1] \
&& (a).st_ino[2] == (b).st_ino[2] \
&& (a).st_dev == (b).st_dev)
# elif defined _WIN32 && ! defined __CYGWIN__
/* Native Windows. */
# if _GL_WINDOWS_STAT_INODES
/* stat() and fstat() set st_dev and st_ino to 0 if information about
the inode is not available. */
# define SAME_INODE(a, b) \
(!((a).st_ino == 0 && (a).st_dev == 0) \
&& (a).st_ino == (b).st_ino && (a).st_dev == (b).st_dev)
# else
/* stat() and fstat() set st_ino to 0 always. */
# define SAME_INODE(a, b) 0
# endif
# else
# define SAME_INODE(a, b) \
((a).st_ino == (b).st_ino \
&& (a).st_dev == (b).st_dev)
# endif
#endif
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