1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
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
13 * the GNU 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * NAME
22 * pipe05.c
23 *
24 * DESCRIPTION
25 * Check what happens when pipe is passed a bad file descriptor.
26 *
27 * ALGORITHM
28 * Issue the pipe call with a bad file descriptor.
29 * Check that we get EFAULT.
30 *
31 * USAGE: <for command-line>
32 * pipe05 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
33 * where, -c n : Run n copies concurrently.
34 * -e : Turn on errno logging.
35 * -i n : Execute test n times.
36 * -I x : Execute test for x seconds.
37 * -P x : Pause for x seconds between iterations.
38 * -t : Turn on syscall timing.
39 *
40 * HISTORY
41 * 07/2001 Ported by Wayne Boyer
42 *
43 * RESTRICTIONS
44 * None
45 */
46 #include <fcntl.h>
47 #include <errno.h>
48 #include <setjmp.h>
49 #include "test.h"
50
51 char *TCID = "pipe05";
52 int TST_TOTAL = 1;
53
54 intptr_t pipes;
55 void setup(void);
56 void cleanup(void);
57 jmp_buf sig11_recover;
58 void sig11_handler(int sig);
59
main(int ac,char ** av)60 int main(int ac, char **av)
61 {
62 volatile int lc;
63 struct sigaction sa, osa;
64
65 tst_parse_opts(ac, av, NULL, NULL);
66
67 setup();
68
69 for (lc = 0; TEST_LOOPING(lc); lc++) {
70
71 /* reset tst_count in case we are looping */
72 tst_count = 0;
73 /* special sig11 case */
74 sa.sa_handler = &sig11_handler;
75 sigemptyset(&sa.sa_mask);
76 sa.sa_flags = 0;
77
78 sigaction(SIGSEGV, NULL, &osa);
79 sigaction(SIGSEGV, &sa, NULL);
80
81 if (setjmp(sig11_recover)) {
82 TEST_RETURN = -1;
83 TEST_ERRNO = EFAULT;
84 } else {
85 TEST(pipe((int *)pipes));
86 }
87 sigaction(SIGSEGV, &osa, NULL);
88
89 if (TEST_RETURN != -1) {
90 tst_resm(TFAIL, "call succeeded unexpectedly");
91 }
92
93 if (TEST_ERRNO != EFAULT) {
94 tst_resm(TFAIL, "unexpected error - %d : %s - "
95 "expected EMFILE", TEST_ERRNO,
96 strerror(TEST_ERRNO));
97 } else {
98 tst_resm(TPASS, "expected failure - "
99 "errno = %d : %s", TEST_ERRNO,
100 strerror(TEST_ERRNO));
101 }
102
103 }
104 cleanup();
105 tst_exit();
106
107 }
108
109 /*
110 * setup() - performs all ONE TIME setup for this test.
111 */
setup(void)112 void setup(void)
113 {
114
115 tst_sig(NOFORK, DEF_HANDLER, cleanup);
116
117 TEST_PAUSE;
118 }
119
120 /******************************************************************
121 * sig11_handler() - our segfault recover hack
122 ******************************************************************/
sig11_handler(int sig LTP_ATTRIBUTE_UNUSED)123 void sig11_handler(int sig LTP_ATTRIBUTE_UNUSED)
124 {
125 longjmp(sig11_recover, 1);
126 }
127
128 /*
129 * cleanup() - performs all ONE TIME cleanup for this test at
130 * completion or premature exit.
131 */
cleanup(void)132 void cleanup(void)
133 {
134 }
135