kill08.c revision e1f008ec81a2828dfb2113ce97347946f42e9f3e 
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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#include "usctest.h"
61
62#include <signal.h>
63#include <errno.h>
64#include <sys/wait.h>
65
66void cleanup(void);
67void setup(void);
68void do_child(void);
69
70char *TCID = "kill08";
71int TST_TOTAL = 1;
72
73extern int Tst_count;
74
75#define TEST_SIG SIGKILL
76
77int main(int ac, char **av)
78{
79	int lc;			/* loop counter */
80	char *msg;		/* message returned from parse_opts */
81	pid_t pid1, pid2;
82	int exno, status, nsig, i;
83
84	/* parse standard options */
85	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) {
86		tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
87	}
88#ifdef UCLINUX
89	maybe_run_child(&do_child, "");
90#endif
91
92	setup();		/* global setup */
93
94	/* The following loop checks looping state if -i option given */
95	for (lc = 0; TEST_LOOPING(lc); lc++) {
96
97		/* reset Tst_count in case we are looping */
98		Tst_count = 0;
99		status = 1;
100		exno = 1;
101
102		/* Fork a process and set the process group so that */
103		/* it is different from this one.  Fork 5 more children. */
104
105		pid1 = FORK_OR_VFORK();
106		if (pid1 < 0) {
107			tst_brkm(TBROK, cleanup, "Fork of first child failed");
108		} else if (pid1 == 0) {
109			setpgrp();
110			for (i = 0; i < 5; i++) {
111				pid2 = FORK_OR_VFORK();
112				if (pid2 < 0) {
113					tst_brkm(TBROK, cleanup, "Fork failed");
114				} else if (pid2 == 0) {
115#ifdef UCLINUX
116					if (self_exec(av[0], "") < 0) {
117						tst_brkm(TBROK, cleanup,
118							 "self_exec of "
119							 "child failed");
120					}
121#else
122					do_child();
123#endif
124				}
125			}
126			/* Kill all processes in this process group */
127			TEST(kill(0, TEST_SIG));
128			pause();
129			 /*NOTREACHED*/ exit(exno);
130		} else {
131			waitpid(pid1, &status, 0);
132			if (TEST_RETURN != 0) {
133				tst_brkm(TFAIL, cleanup, "%s failed - errno = "
134					 "%d : %s", TCID, TEST_ERRNO,
135					 strerror(TEST_ERRNO));
136			}
137		}
138
139		if (STD_FUNCTIONAL_TEST) {
140			/*
141			 * Check to see if the process was terminated with the
142			 * expected signal.
143			 */
144			nsig = WTERMSIG(status);
145			if (nsig == TEST_SIG) {
146				tst_resm(TPASS, "received expected signal %d",
147					 nsig);
148			} else {
149				tst_resm(TFAIL,
150					 "expected signal %d received %d",
151					 TEST_SIG, nsig);
152			}
153		} else {
154			tst_resm(TPASS, "call succeeded");
155		}
156	}
157	cleanup();
158
159	 /*NOTREACHED*/ return 0;
160}
161
162/*
163 * do_child()
164 */
165void do_child()
166{
167	int exno = 1;
168
169	pause();
170	 /*NOTREACHED*/ exit(exno);
171}
172
173/*
174 * setup() - performs all ONE TIME setup for this test
175 */
176void setup(void)
177{
178	/* Pause if that option was specified */
179	TEST_PAUSE;
180}
181
182/*
183 * cleanup() - performs all the ONE TIME cleanup for this test at completion
184 * or premature exit.
185 */
186void cleanup(void)
187{
188	/*
189	 * print timing status if that option was specified.
190	 * print errno log if that option was specified
191	 */
192	TEST_CLEANUP;
193
194	/* exit with return code appropriate for results */
195	tst_exit();
196}
197