1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * Copyright (c) 2020 SUSE LLC
5 *
6 * 03/30/1992 AUTHOR: William Roske CO-PILOT: Dave Fenner
7 *
8 */
9
10 /*\
11 * [Description]
12 *
13 * Verify that dup(2) syscall executes successfully and allocates
14 * a new file descriptor which refers to the same open file as oldfd.
15 */
16
17 #include "tst_test.h"
18
19 static int fd;
20 static struct stat buf1, buf2;
21
verify_dup(void)22 static void verify_dup(void)
23 {
24 TST_EXP_FD(dup(fd));
25
26 SAFE_FSTAT(TST_RET, &buf2);
27 TST_EXP_EQ_LU(buf1.st_ino, buf2.st_ino);
28
29 SAFE_CLOSE(TST_RET);
30 }
31
setup(void)32 static void setup(void)
33 {
34 fd = SAFE_OPEN("dupfile", O_RDWR | O_CREAT, 0700);
35 SAFE_FSTAT(fd, &buf1);
36 }
37
cleanup(void)38 static void cleanup(void)
39 {
40 if (fd > 0)
41 SAFE_CLOSE(fd);
42 }
43
44 static struct tst_test test = {
45 .test_all = verify_dup,
46 .setup = setup,
47 .cleanup = cleanup,
48 .needs_tmpdir = 1,
49 };
50