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 *	signal03.c
23 *
24 * DESCRIPTION
25 *	signal03 - set signals to be ignored
26 *
27 * ALGORITHM
28 *	loop if that option was specified
29 *	issue the system call
30 *	check the return value
31 *	  if return value == -1
32 *	    issue a FAIL message, break remaining tests and cleanup
33 *	  if we are doing functional testing
34 *	    send the signal with kill()
35 *	    if we catch the signal
36 *	      issue a FAIL message
37 *	    else
38 *	      issue a PASS message
39 *	call cleanup
40 *
41 * USAGE:  <for command-line>
42 *  signal01 [-c n] [-f] [-i n] [-I x] [-p x] [-t]
43 *	where,  -c n : Run n copies concurrently.
44 *		-f   : Turn off functionality Testing.
45 *		-i n : Execute test n times.
46 *		-I x : Execute test for x seconds.
47 *		-P x : Pause for x seconds between iterations.
48 *		-t   : Turn on syscall timing.
49 *
50 * History
51 *	07/2001 John George
52 *		-Ported
53 *
54 * Restrictions
55 *	none
56 */
57
58#include "test.h"
59
60#include <errno.h>
61#include <signal.h>
62
63void cleanup(void);
64void setup(void);
65void sighandler(int);
66
67int siglist[] = { SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGABRT, SIGIOT,
68	SIGBUS, SIGFPE, SIGUSR1, SIGSEGV, SIGUSR2, SIGPIPE, SIGALRM,
69	SIGTERM,
70#ifdef SIGSTKFLT
71	SIGSTKFLT,
72#endif
73	SIGCHLD, SIGCONT, SIGTSTP, SIGTTIN,
74	SIGTTOU, SIGURG, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF,
75	SIGWINCH, SIGIO, SIGPWR, SIGSYS,
76#ifdef SIGUNUSED
77	SIGUNUSED
78#endif
79};
80
81char *TCID = "signal03";
82int TST_TOTAL = ARRAY_SIZE(siglist);
83
84typedef void (*sighandler_t) (int);
85
86sighandler_t Tret;
87
88int fail = 0;
89
90int main(int ac, char **av)
91{
92	int lc;
93	pid_t pid;
94	int i, rval;
95
96	tst_parse_opts(ac, av, NULL, NULL);
97
98	setup();		/* global setup */
99
100	/* The following loop checks looping state if -i option given */
101
102	for (lc = 0; TEST_LOOPING(lc); lc++) {
103		/* reset tst_count in case we are looping */
104		tst_count = 0;
105
106		/*
107		 * loop through the list of signals and test each one
108		 */
109		for (i = 0; i < TST_TOTAL; i++) {
110
111			errno = 0;
112			Tret = signal(siglist[i], SIG_IGN);
113			TEST_ERRNO = errno;
114
115			if (Tret == SIG_ERR) {
116				tst_brkm(TFAIL, cleanup, "%s call failed - "
117					 "errno = %d : %s", TCID,
118					 TEST_ERRNO, strerror(TEST_ERRNO));
119			}
120
121			/*
122			 * Send the signal.  If the signal is truly set
123			 * to be ignored, then the signal handler will
124			 * never be invoked and the test will pass.
125			 */
126			pid = getpid();
127
128			if ((rval = kill(pid, siglist[i])) != 0) {
129				tst_brkm(TBROK, cleanup, "call to "
130					 "kill failed");
131			}
132
133			if (fail == 0) {
134				tst_resm(TPASS, "%s call succeeded",
135					 TCID);
136			} else {
137				/* the signal was caught so we fail */
138				tst_resm(TFAIL, "signal caught when "
139					 "suppose to be ignored");
140			}
141		}
142	}
143
144	cleanup();
145	tst_exit();
146}
147
148/*
149 * sighandler() - the test fails if we ever get here.
150 */
151void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
152{
153	fail = 1;
154}
155
156/*
157 * setup() - performs all the ONE TIME setup for this test.
158 */
159void setup(void)
160{
161	/* capture signals in our own handler */
162	tst_sig(NOFORK, sighandler, cleanup);
163
164	TEST_PAUSE;
165}
166
167/*
168 * cleanup() - performs all the ONE TIME cleanup for this test at completion
169 * 	       or premature exit.
170 */
171void cleanup(void)
172{
173
174}
175