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 *
6 */
7
8 /*\
9 * [Description]
10 *
11 * Tests for failures:
12 *
13 * - ENOTDIR A component of the pathname, which is not a directory.
14 * - ENOENT A filename which doesn't exist.
15 * - ENAMETOOLONG A pathname which is longer than MAXNAMLEN.
16 * - EFAULT A pathname pointer outside the address space of the process.
17 * - EFAULT A buf pointer outside the address space of the process.
18 * - ELOOP A filename which has too many symbolic links.
19 */
20
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <stdlib.h>
24 #include <sys/statfs.h>
25 #include <sys/wait.h>
26 #include "tst_test.h"
27 #include "tst_safe_macros.h"
28
29 #define TEST_FILE "statfs_file"
30 #define TEST_FILE1 TEST_FILE"/statfs_file1"
31 #define TEST_NOEXIST "statfs_noexist"
32 #define TEST_SYMLINK "statfs_symlink"
33
34 static int fd;
35 static char test_toolong[PATH_MAX+2];
36 static struct statfs buf;
37
38 static struct test_case_t {
39 char *path;
40 struct statfs *buf;
41 int exp_error;
42 } tests[] = {
43 {TEST_FILE1, &buf, ENOTDIR},
44 {TEST_NOEXIST, &buf, ENOENT},
45 {test_toolong, &buf, ENAMETOOLONG},
46 {(char *)-1, &buf, EFAULT},
47 {TEST_FILE, (struct statfs *)-1, EFAULT},
48 {TEST_SYMLINK, &buf, ELOOP},
49 };
50
statfs_verify(unsigned int n)51 static void statfs_verify(unsigned int n)
52 {
53 int pid, status;
54
55 pid = SAFE_FORK();
56 if (!pid) {
57 TST_EXP_FAIL(statfs(tests[n].path, tests[n].buf), tests[n].exp_error, "statfs()");
58 exit(0);
59 }
60
61 SAFE_WAITPID(pid, &status, 0);
62
63 if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
64 return;
65
66 if (tests[n].exp_error == EFAULT &&
67 WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) {
68 tst_res(TPASS, "Got SIGSEGV instead of EFAULT");
69 return;
70 }
71
72 tst_res(TFAIL, "Child %s", tst_strstatus(status));
73 }
74
setup(void)75 static void setup(void)
76 {
77 unsigned int i;
78
79 fd = SAFE_CREAT(TEST_FILE, 0444);
80
81 memset(test_toolong, 'a', PATH_MAX+1);
82
83 for (i = 0; i < ARRAY_SIZE(tests); i++) {
84 if (tests[i].path == (char *)-1)
85 tests[i].path = tst_get_bad_addr(NULL);
86 }
87
88 SAFE_SYMLINK(TEST_SYMLINK, "statfs_symlink_2");
89 SAFE_SYMLINK("statfs_symlink_2", TEST_SYMLINK);
90 }
91
cleanup(void)92 static void cleanup(void)
93 {
94 if (fd > 0)
95 close(fd);
96 }
97
98 static struct tst_test test = {
99 .test = statfs_verify,
100 .tcnt = ARRAY_SIZE(tests),
101 .setup = setup,
102 .cleanup = cleanup,
103 .needs_tmpdir = 1,
104 .forks_child = 1,
105 };
106