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 *	kill08.c
23 *
24 * DESCRIPTION
25 *	Test case to check the basic functionality of kill() when kill an
26 *	entire process group.
27 *
28 * ALGORITHM
29 *	call setup
30 *	loop if the -i option was given
31 *	fork 5 childeren
32 *	execute the kill system call
33 *	check the return value
34 *	if return value is -1
35 *		issue a FAIL message, break remaining tests and cleanup
36 *	if we are doing functional testing
37 *		if the processes were terminated with the expected signal.
38 *			issue a PASS message
39 *		otherwise
40 *			issue a FAIL message
41 *	call cleanup
42 *
43 * USAGE
44 *  kill08 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
45 *     where,  -c n : Run n copies concurrently.
46 *             -f   : Turn off functionality Testing.
47 *             -i n : Execute test n times.
48 *             -I x : Execute test for x seconds.
49 *             -P x : Pause for x seconds between iterations.
50 *             -t   : Turn on syscall timing.
51 *
52 * HISTORY
53 *	07/2001 Ported by Wayne Boyer
54 *
55 * RESTRICTIONS
56 *	This test should be run as a non-root user.
57 */
58
59#include "test.h"
60
61#include <signal.h>
62#include <errno.h>
63#include <sys/wait.h>
64
65void cleanup(void);
66void setup(void);
67void do_child(void);
68
69char *TCID = "kill08";
70int TST_TOTAL = 1;
71
72#define TEST_SIG SIGKILL
73
74int main(int ac, char **av)
75{
76	int lc;
77	pid_t pid1, pid2;
78	int exno, status, nsig, i;
79
80	tst_parse_opts(ac, av, NULL, NULL);
81#ifdef UCLINUX
82	maybe_run_child(&do_child, "");
83#endif
84
85	setup();		/* global setup */
86
87	/* The following loop checks looping state if -i option given */
88	for (lc = 0; TEST_LOOPING(lc); lc++) {
89
90		/* reset tst_count in case we are looping */
91		tst_count = 0;
92		status = 1;
93		exno = 1;
94
95		/* Fork a process and set the process group so that */
96		/* it is different from this one.  Fork 5 more children. */
97
98		pid1 = FORK_OR_VFORK();
99		if (pid1 < 0) {
100			tst_brkm(TBROK, cleanup, "Fork of first child failed");
101		} else if (pid1 == 0) {
102			setpgrp();
103			for (i = 0; i < 5; i++) {
104				pid2 = FORK_OR_VFORK();
105				if (pid2 < 0) {
106					tst_brkm(TBROK, cleanup, "Fork failed");
107				} else if (pid2 == 0) {
108#ifdef UCLINUX
109					if (self_exec(av[0], "") < 0) {
110						tst_brkm(TBROK, cleanup,
111							 "self_exec of "
112							 "child failed");
113					}
114#else
115					do_child();
116#endif
117				}
118			}
119			/* Kill all processes in this process group */
120			TEST(kill(0, TEST_SIG));
121			pause();
122			exit(exno);
123		} else {
124			waitpid(pid1, &status, 0);
125			if (TEST_RETURN != 0) {
126				tst_brkm(TFAIL, cleanup, "%s failed - errno = "
127					 "%d : %s", TCID, TEST_ERRNO,
128					 strerror(TEST_ERRNO));
129			}
130		}
131
132		/*
133		 * Check to see if the process was terminated with the
134		 * expected signal.
135		 */
136		nsig = WTERMSIG(status);
137		if (nsig == TEST_SIG) {
138			tst_resm(TPASS, "received expected signal %d",
139				 nsig);
140		} else {
141			tst_resm(TFAIL,
142				 "expected signal %d received %d",
143				 TEST_SIG, nsig);
144		}
145	}
146
147	cleanup();
148	tst_exit();
149}
150
151/*
152 * do_child()
153 */
154void do_child(void)
155{
156	int exno = 1;
157
158	pause();
159	exit(exno);
160}
161
162/*
163 * setup() - performs all ONE TIME setup for this test
164 */
165void setup(void)
166{
167
168	TEST_PAUSE;
169}
170
171/*
172 * cleanup() - performs all the ONE TIME cleanup for this test at completion
173 * or premature exit.
174 */
175void cleanup(void)
176{
177
178}
179