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
51char *TCID = "pipe05";
52int TST_TOTAL = 1;
53
54intptr_t pipes;
55void setup(void);
56void cleanup(void);
57jmp_buf sig11_recover;
58void sig11_handler(int sig);
59
60int 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 */
112void 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 ******************************************************************/
123void 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 */
132void cleanup(void)
133{
134}
135