68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
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/* -*- C -*-
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* Copyright (c) 1998-2006 Motoyuki Kasahara
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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/*
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* If the files `file_name1' and `file_name2' are identical (i.e. the are
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* written on a same device and a same i-node is assigned to them), 1 is
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* returned. Otherwise, 0 is returned.
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*/
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int
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is_same_file(const char *file_name1, const char *file_name2)
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{
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struct stat st1, st2;
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if (stat(file_name1, &st1) != 0 || stat(file_name2, &st2) != 0)
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return 0;
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#ifndef DOS_FILE_PATH
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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return 0;
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#else /* DOS_FILE_PATH */
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/* Can't rely on st_ino and st_dev, use other fields: */
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if (st1.st_mode != st2.st_mode
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|| st1.st_uid != st2.st_uid
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|| st1.st_gid != st2.st_gid
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|| st1.st_size != st2.st_size
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|| st1.st_atime != st2.st_atime
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|| st1.st_mtime != st2.st_mtime
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|| st1.st_ctime != st2.st_ctime)
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return 0;
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#endif /* DOS_FILE_PATH */
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return 1;
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}
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