1 /*
2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "tests.h"
29 #include <assert.h>
30 #include <unistd.h>
31 #include <sys/stat.h>
32
33 #define N_FDS 3
34
35 /*
36 * Do not print any messages, indicate errors with return codes.
37 */
38 static int
check_fd(int fd,const char * fname)39 check_fd(int fd, const char *fname)
40 {
41 const int should_be_closed = (fname[0] == '\0');
42
43 struct stat st_fd, st_fn;
44
45 if (fstat(fd, &st_fd)) {
46 if (!should_be_closed)
47 return 10 + fd;
48 } else {
49 if (should_be_closed)
50 return 20 + fd;
51
52 if (stat(fname, &st_fn))
53 return 30 + fd;
54
55 if (st_fd.st_dev != st_fn.st_dev
56 || st_fd.st_ino != st_fn.st_ino)
57 return 40 + fd;
58 }
59
60 return 0;
61 }
62
63 int
main(int ac,char ** av)64 main(int ac, char **av)
65 {
66 assert(ac == 1 + N_FDS);
67
68 int rc = 0, fd;
69 for (fd = 1; fd < 1 + N_FDS; ++fd)
70 if ((rc = check_fd(fd - 1, av[fd])))
71 break;
72
73 return rc;
74 }
75