| 1 | /* Determine whether two stat buffers are known to refer to the same file. |
| 2 | |
| 3 | Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software: you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef SAME_INODE_H |
| 19 | # define SAME_INODE_H 1 |
| 20 | |
| 21 | # include <sys/types.h> |
| 22 | |
| 23 | # if defined __VMS && __CRTL_VER < 80200000 |
| 24 | # define SAME_INODE(a, b) \ |
| 25 | ((a).st_ino[0] == (b).st_ino[0] \ |
| 26 | && (a).st_ino[1] == (b).st_ino[1] \ |
| 27 | && (a).st_ino[2] == (b).st_ino[2] \ |
| 28 | && (a).st_dev == (b).st_dev) |
| 29 | # elif defined _WIN32 && ! defined __CYGWIN__ |
| 30 | /* Native Windows. */ |
| 31 | # if _GL_WINDOWS_STAT_INODES |
| 32 | /* stat() and fstat() set st_dev and st_ino to 0 if information about |
| 33 | the inode is not available. */ |
| 34 | # define SAME_INODE(a, b) \ |
| 35 | (!((a).st_ino == 0 && (a).st_dev == 0) \ |
| 36 | && (a).st_ino == (b).st_ino && (a).st_dev == (b).st_dev) |
| 37 | # else |
| 38 | /* stat() and fstat() set st_ino to 0 always. */ |
| 39 | # define SAME_INODE(a, b) 0 |
| 40 | # endif |
| 41 | # else |
| 42 | # define SAME_INODE(a, b) \ |
| 43 | ((a).st_ino == (b).st_ino \ |
| 44 | && (a).st_dev == (b).st_dev) |
| 45 | # endif |
| 46 | |
| 47 | #endif |