1 /* Determine whether two file names refer to the same file.
2 Copyright (C) 1997-2000, 2002-2003 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* written by Jim Meyering */
31 #include <sys/types.h>
50 #ifndef HAVE_DECL_FREE
51 "this configure-time declaration test was not run"
57 #define SAME_INODE(Stat_buf_1, Stat_buf_2) \
58 ((Stat_buf_1).st_ino == (Stat_buf_2).st_ino \
59 && (Stat_buf_1).st_dev == (Stat_buf_2).st_dev)
61 /* Return nonzero if SOURCE and DEST point to the same name in the same
65 same_name (const char *source, const char *dest)
67 char *source_basename, *dest_basename;
68 size_t source_baselen, dest_baselen;
70 /* Compare the basenames. */
71 source_basename = base_name (source);
72 dest_basename = base_name (dest);
73 source_baselen = base_len (source_basename);
74 dest_baselen = base_len (dest_basename);
75 if (source_baselen == dest_baselen
76 && memcmp (source_basename, dest_basename, dest_baselen) == 0)
78 struct stat source_dir_stats;
79 struct stat dest_dir_stats;
80 char *source_dirname, *dest_dirname;
82 /* Compare the parent directories (via the device and inode numbers). */
83 source_dirname = dir_name (source);
84 dest_dirname = dir_name (dest);
86 if (stat (source_dirname, &source_dir_stats))
88 /* Shouldn't happen. */
89 error (1, errno, "%s", source_dirname);
92 if (stat (dest_dirname, &dest_dir_stats))
94 /* Shouldn't happen. */
95 error (1, errno, "%s", dest_dirname);
98 free (source_dirname);
101 if (SAME_INODE (source_dir_stats, dest_dir_stats))