1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 */
5
6 /*\
7 * [Description]
8 *
9 * Test whether the inode number are the same for both file descriptors.
10 */
11
12 #include <unistd.h>
13 #include "tst_test.h"
14 #include "tst_safe_macros.h"
15
16 static int fd[2] = {-1, -1};
17 static int nfd[2] = {10, 20};
18
setup(void)19 static void setup(void)
20 {
21 SAFE_PIPE(fd);
22 }
23
cleanup(void)24 static void cleanup(void)
25 {
26 unsigned int i;
27
28 for (i = 0; i < ARRAY_SIZE(fd); i++) {
29 close(fd[i]);
30 close(nfd[i]);
31 }
32 }
33
run(unsigned int i)34 static void run(unsigned int i)
35 {
36 struct stat oldbuf, newbuf;
37
38 TST_EXP_VAL(dup2(fd[i], nfd[i]), nfd[i]);
39 if (TST_RET == -1)
40 return;
41
42 SAFE_FSTAT(fd[i], &oldbuf);
43 SAFE_FSTAT(nfd[i], &newbuf);
44
45 TST_EXP_EQ_LU(oldbuf.st_ino, newbuf.st_ino);
46
47 SAFE_CLOSE(TST_RET);
48 }
49
50 static struct tst_test test = {
51 .tcnt = ARRAY_SIZE(fd),
52 .test = run,
53 .setup = setup,
54 .cleanup = cleanup,
55 };
56