1 /*
2 * Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /* Description:
20 * Verify that:
21 * 1) kcmp fails with bad pid
22 * 2) kcmp fails with invalid flag
23 * 3) kcmp fails with invalid flag
24 * 4) kcmp fails with invalid flag
25 * 5) kcmp fails with invalid flag
26 * 6) kcmp fails with invalid fd
27 */
28
29 #define _GNU_SOURCE
30
31 #include "tst_test.h"
32 #include "lapi/fcntl.h"
33 #include "kcmp.h"
34
35 #define TEST_FILE "test_file"
36 #define TEST_FILE2 "test_file2"
37
38 static int fd1;
39 static int fd2;
40 static int fd_fake;
41 static int pid1;
42 static int pid_unused;
43 static int fd_fake = -1;
44
45 #include <sys/types.h>
46 #include <sys/wait.h>
47 #include <limits.h>
48
49 static struct test_case {
50 int *pid1;
51 int *pid2;
52 int type;
53 int *fd1;
54 int *fd2;
55 int exp_errno;
56 } test_cases[] = {
57 {&pid1, &pid_unused, KCMP_FILE, &fd1, &fd2, ESRCH},
58 {&pid1, &pid1, KCMP_TYPES + 1, &fd1, &fd2, EINVAL},
59 {&pid1, &pid1, -1, &fd1, &fd2, EINVAL},
60 {&pid1, &pid1, INT_MIN, &fd1, &fd2, EINVAL},
61 {&pid1, &pid1, INT_MAX, &fd1, &fd2, EINVAL},
62 {&pid1, &pid1, KCMP_FILE, &fd1, &fd_fake, EBADF}
63 };
64
setup(void)65 static void setup(void)
66 {
67 pid1 = getpid();
68 pid_unused = tst_get_unused_pid();
69
70 fd1 = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR | O_TRUNC);
71 fd2 = SAFE_OPEN(TEST_FILE2, O_CREAT | O_RDWR | O_TRUNC);
72 }
73
cleanup(void)74 static void cleanup(void)
75 {
76 if (fd1 > 0)
77 SAFE_CLOSE(fd1);
78
79 if (fd2 > 0)
80 SAFE_CLOSE(fd2);
81 }
82
verify_kcmp(unsigned int n)83 static void verify_kcmp(unsigned int n)
84 {
85 struct test_case *test = &test_cases[n];
86
87 TEST(kcmp(*(test->pid1), *(test->pid2), test->type,
88 *(test->fd1), *(test->fd2)));
89
90 if (TEST_RETURN != -1) {
91 tst_res(TFAIL, "kcmp() succeeded unexpectedly");
92 return;
93 }
94
95 if (test->exp_errno == TEST_ERRNO) {
96 tst_res(TPASS | TTERRNO, "kcmp() returned the expected value");
97 return;
98 }
99
100 tst_res(TFAIL | TTERRNO,
101 "kcmp() got unexpected return value: expected: %d - %s",
102 test->exp_errno, tst_strerrno(test->exp_errno));
103 }
104
105 static struct tst_test test = {
106 .tcnt = ARRAY_SIZE(test_cases),
107 .setup = setup,
108 .cleanup = cleanup,
109 .test = verify_kcmp,
110 .min_kver = "3.5.0",
111 .needs_tmpdir = 1
112 };
113