1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2014 Fujitsu Ltd.
4 * Author: Xing Gu <gux.fnst@cn.fujitsu.com>
5 */
6 /*
7 * Description:
8 * Verify that,
9 * 1) tee() returns -1 and sets errno to EINVAL if fd_in does
10 * not refer to a pipe.
11 * 2) tee() returns -1 and sets errno to EINVAL if fd_out does
12 * not refer to a pipe.
13 * 3) tee() returns -1 and sets errno to EINVAL if fd_in and
14 * fd_out refer to the same pipe.
15 */
16
17 #define _GNU_SOURCE
18
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <fcntl.h>
22 #include <unistd.h>
23
24 #include "tst_test.h"
25 #include "lapi/tee.h"
26
27 #define TEST_FILE "testfile"
28
29 #define STR "abcdefghigklmnopqrstuvwxyz"
30 #define TEE_TEST_LEN 10
31
32 static int fd;
33 static int pipes[2];
34
35 static struct tcase {
36 int *fdin;
37 int *fdout;
38 int exp_errno;
39 } tcases[] = {
40 { &fd, &pipes[1], EINVAL },
41 { &pipes[0], &fd, EINVAL },
42 { &pipes[0], &pipes[1], EINVAL },
43 };
44
setup(void)45 static void setup(void)
46 {
47 fd = SAFE_OPEN(TEST_FILE, O_RDWR | O_CREAT, 0644);
48 SAFE_PIPE(pipes);
49 SAFE_WRITE(SAFE_WRITE_ALL, pipes[1], STR, sizeof(STR) - 1);
50 }
51
tee_verify(unsigned int n)52 static void tee_verify(unsigned int n)
53 {
54 struct tcase *tc = &tcases[n];
55
56 TEST(tee(*(tc->fdin), *(tc->fdout), TEE_TEST_LEN, 0));
57
58 if (TST_RET != -1) {
59 tst_res(TFAIL, "tee() returned %ld, "
60 "expected -1, errno:%d", TST_RET,
61 tc->exp_errno);
62 return;
63 }
64
65 if (TST_ERR != tc->exp_errno) {
66 tst_res(TFAIL | TTERRNO,
67 "tee() failed unexpectedly; expected: %d - %s",
68 tc->exp_errno, tst_strerrno(tc->exp_errno));
69 return;
70 }
71
72 tst_res(TPASS | TTERRNO, "tee() failed as expected");
73 }
74
cleanup(void)75 static void cleanup(void)
76 {
77 if (fd > 0)
78 SAFE_CLOSE(fd);
79
80 if (pipes[0] > 0)
81 SAFE_CLOSE(pipes[0]);
82
83 if (pipes[1] > 0)
84 SAFE_CLOSE(pipes[1]);
85 }
86
87 static struct tst_test test = {
88 .setup = setup,
89 .cleanup = cleanup,
90 .test = tee_verify,
91 .tcnt = ARRAY_SIZE(tcases),
92 .needs_tmpdir = 1,
93 };
94