1 /*
2  * Copyright (c) 2014 Fujitsu Ltd.
3  * Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
4  *
5  * This program is free software;  you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  *
19  */
20 /*
21  * Test Description:
22  *  Verify that,
23  *   1. pselect() fails with -1 return value and sets errno to EBADF
24  *      if a file descriptor that was already closed.
25  *   2. pselect() fails with -1 return value and sets errno to EINVAL
26  *      if nfds was negative.
27  *   3. pselect() fails with -1 return value and sets errno to EINVAL
28  *      if the value contained within timeout was invalid.
29  */
30 
31 #include <errno.h>
32 #include "test.h"
33 #include "safe_macros.h"
34 
35 TCID_DEFINE(pselect02);
36 
37 static fd_set read_fds;
38 static struct timespec time_buf;
39 
40 static struct test_case_t {
41 	int nfds;
42 	fd_set *readfds;
43 	struct timespec *timeout;
44 	int exp_errno;
45 } test_cases[] = {
46 	{128, &read_fds, NULL, EBADF},
47 	{-1, NULL, NULL, EINVAL},
48 	{128, NULL, &time_buf, EINVAL},
49 };
50 
51 int TST_TOTAL = ARRAY_SIZE(test_cases);
52 
53 static void setup(void);
54 static void cleanup(void);
55 static void pselect_verify(const struct test_case_t *);
56 
57 int main(int argc, char **argv)
58 {
59 	int lc, i;
60 
61 	tst_parse_opts(argc, argv, NULL, NULL);
62 
63 	setup();
64 
65 	for (lc = 0; TEST_LOOPING(lc); lc++) {
66 		tst_count = 0;
67 		for (i = 0; i < TST_TOTAL; i++)
68 			pselect_verify(&test_cases[i]);
69 	}
70 
71 	cleanup();
72 	tst_exit();
73 }
74 
75 static void setup(void)
76 {
77 	int fd;
78 
79 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
80 
81 	TEST_PAUSE;
82 
83 	tst_tmpdir();
84 
85 	fd = SAFE_OPEN(cleanup, "test_file", O_RDWR | O_CREAT, 0777);
86 
87 	FD_ZERO(&read_fds);
88 	FD_SET(fd, &read_fds);
89 
90 	SAFE_CLOSE(cleanup, fd);
91 
92 	time_buf.tv_sec = -1;
93 	time_buf.tv_nsec = 0;
94 }
95 
96 static void pselect_verify(const struct test_case_t *test)
97 {
98 	TEST(pselect(test->nfds, test->readfds, NULL, NULL, test->timeout,
99 	     NULL));
100 
101 	if (TEST_RETURN != -1) {
102 		tst_resm(TFAIL, "pselect() succeeded unexpectedly");
103 		return;
104 	}
105 
106 	if (TEST_ERRNO == test->exp_errno) {
107 		tst_resm(TPASS | TTERRNO, "pselect() failed as expected");
108 	} else {
109 		tst_resm(TFAIL | TTERRNO,
110 			 "pselect() failed unexpectedly; expected: %d - %s",
111 			 test->exp_errno, strerror(test->exp_errno));
112 	}
113 }
114 
115 static void cleanup(void)
116 {
117 	tst_rmdir();
118 }
119