1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * Authors: David Fenner, Jon Hendrickson
5 * Copyright (C) 2024 Andrea Cervesato <[email protected]>
6 */
7
8 /*\
9 * [Description]
10 *
11 * This test verifies that utime() is working correctly on symlink()
12 * generated files.
13 *
14 * Also verify if utime() fails with:
15 *
16 * - ENOENT when symlink points to nowhere
17 * - ELOOP when symlink is looping
18 */
19
20 #include <utime.h>
21 #include "tst_test.h"
22
23 #define TIME_DIFF 100
24
create_symlink(const char * path,const char * symname)25 static void create_symlink(const char *path, const char *symname)
26 {
27 struct stat asymlink;
28
29 SAFE_SYMLINK(path, symname);
30 SAFE_LSTAT(symname, &asymlink);
31
32 if ((asymlink.st_mode & S_IFMT) != S_IFLNK) {
33 tst_brk(TBROK, "symlink generated a non-symbolic link %s to %s",
34 symname, path);
35 }
36 }
37
test_utime(void)38 static void test_utime(void)
39 {
40 char *symname = "my_symlink0";
41 struct stat oldsym_stat;
42 struct stat newsym_stat;
43
44 tst_res(TINFO, "Test if utime() changes access time");
45
46 create_symlink(tst_get_tmpdir(), symname);
47 SAFE_STAT(symname, &oldsym_stat);
48
49 struct utimbuf utimes = {
50 .actime = oldsym_stat.st_atime + TIME_DIFF,
51 .modtime = oldsym_stat.st_mtime + TIME_DIFF
52 };
53
54 TST_EXP_PASS(utime(symname, &utimes));
55 SAFE_STAT(symname, &newsym_stat);
56
57 TST_EXP_EQ_LI(newsym_stat.st_atime - oldsym_stat.st_atime, TIME_DIFF);
58 TST_EXP_EQ_LI(newsym_stat.st_mtime - oldsym_stat.st_mtime, TIME_DIFF);
59
60 SAFE_UNLINK(symname);
61 }
62
test_utime_no_path(void)63 static void test_utime_no_path(void)
64 {
65 char *symname = "my_symlink1";
66 struct utimbuf utimes;
67
68 tst_res(TINFO, "Test if utime() raises ENOENT when symlink points to nowhere");
69
70 create_symlink("bc+eFhi!k", symname);
71 TST_EXP_FAIL(utime(symname, &utimes), ENOENT);
72
73 SAFE_UNLINK(symname);
74 }
75
test_utime_loop(void)76 static void test_utime_loop(void)
77 {
78 char *symname = "my_symlink2";
79 struct utimbuf utimes;
80
81 tst_res(TINFO, "Test if utime() raises ELOOP when symlink is looping");
82
83 create_symlink(symname, symname);
84 TST_EXP_FAIL(utime(symname, &utimes), ELOOP);
85
86 SAFE_UNLINK(symname);
87 }
88
run(void)89 static void run(void)
90 {
91 test_utime();
92 test_utime_no_path();
93 test_utime_loop();
94 }
95
96 static struct tst_test test = {
97 .test_all = run,
98 .needs_tmpdir = 1,
99 };
100