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
19static int fd;
20static struct stat buf1, buf2;
21
22static 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
32static void setup(void)
33{
34	fd = SAFE_OPEN("dupfile", O_RDWR | O_CREAT, 0700);
35	SAFE_FSTAT(fd, &buf1);
36}
37
38static void cleanup(void)
39{
40	if (fd > 0)
41		SAFE_CLOSE(fd);
42}
43
44static struct tst_test test = {
45	.test_all = verify_dup,
46	.setup = setup,
47	.cleanup = cleanup,
48	.needs_tmpdir = 1,
49};
50