1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * 07/2001 Ported by Wayne Boyer
5 * 05/2019 Ported to new library: Christian Amann <[email protected]>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Tests if fstat() returns correctly and reports correct file information
12 * using the stat structure.
13 */
14
15 #include "tst_test.h"
16
17 #define TESTFILE "test_file"
18 #define LINK_TESTFILE "link_test_file"
19 #define FILE_SIZE 1024
20 #define FILE_MODE 0644
21 #define NLINK 2
22
23 static struct stat stat_buf;
24 static uid_t user_id;
25 static gid_t group_id;
26 static int fildes;
27
run(void)28 static void run(void)
29 {
30 TST_EXP_PASS(fstat(fildes, &stat_buf));
31 TST_EXP_EQ_LU(stat_buf.st_uid, user_id);
32 TST_EXP_EQ_LU(stat_buf.st_gid, group_id);
33 TST_EXP_EQ_LI(stat_buf.st_size, FILE_SIZE);
34 TST_EXP_EQ_LU(stat_buf.st_mode & 0777, FILE_MODE);
35 TST_EXP_EQ_LU(stat_buf.st_nlink, NLINK);
36 }
37
setup(void)38 static void setup(void)
39 {
40 user_id = getuid();
41 group_id = getgid();
42
43 umask(0);
44
45 fildes = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, FILE_MODE);
46
47 if (tst_fill_file(TESTFILE, 'a', FILE_SIZE, 1))
48 tst_brk(TBROK, "Could not fill test file");
49
50 SAFE_LINK(TESTFILE, LINK_TESTFILE);
51 }
52
cleanup(void)53 static void cleanup(void)
54 {
55 if (fildes > 0)
56 SAFE_CLOSE(fildes);
57 }
58
59 static struct tst_test test = {
60 .test_all = run,
61 .setup = setup,
62 .cleanup = cleanup,
63 .needs_tmpdir = 1,
64 };
65