1 /*
2  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of version 2 of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11  *
12  * You should have received a copy of the GNU General Public License along
13  * with this program; if not, write the Free Software Foundation, Inc.,
14  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15  *
16  */
17 /**********************************************************
18  *
19  *    TEST IDENTIFIER	: prctl01
20  *
21  *    EXECUTED BY	: anyone
22  *
23  *    TEST TITLE	: Basic test for prctl(2)
24  *
25  *    TEST CASE TOTAL	: 2
26  *
27  *    AUTHOR		: Saji Kumar.V.R <saji.kumar@wipro.com>
28  *
29  *    SIGNALS
30  * 	Uses SIGUSR1 to pause before test if option set.
31  * 	(See the parse_opts(3) man page).
32  *
33  *    DESCRIPTION
34  *	This is a Phase I test for the prctl(2) system call.
35  *	It is intended to provide a limited exposure of the system call.
36  *
37  * 	Setup:
38  * 	  Setup signal handling.
39  *	  Pause for SIGUSR1 if option specified.
40  *
41  * 	Test:
42  *	 Loop if the proper options are given.
43  *	 fork a child
44  *
45  *	 CHILD:
46  *		call prctl() with proper arguments
47  *		If call succeeds,
48  *			exit with 0
49  *		else
50  *			exit with 1
51  *	 PARENT:
52  *		wait() for child.
53  *		If child exits with exit value 0,
54  *			Test passed
55  *		else
56  *			Test Failed
57  *
58  * 	Cleanup:
59  * 	  Print errno log and/or timing stats if options given
60  *
61  * USAGE:  <for command-line>
62  *  prctl01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
63  *			where,  -c n : Run n copies concurrently.
64  *				-e   : Turn on errno logging.
65  *				-h   : Show help screen
66  *				-f   : Turn off functional testing
67  *				-i n : Execute test n times.
68  *				-I x : Execute test for x seconds.
69  *				-p   : Pause for SIGUSR1 before starting
70  *				-P x : Pause for x seconds between iterations.
71  *				-t   : Turn on syscall timing.
72  *
73  ****************************************************************/
74 
75 #include <errno.h>
76 #include <signal.h>
77 #include <sys/prctl.h>
78 #include <sys/wait.h>
79 
80 #include "test.h"
81 
82 static void setup(void);
83 static void cleanup(void);
84 
85 char *TCID = "prctl01";
86 
87 int option[2] = { PR_GET_PDEATHSIG, PR_SET_PDEATHSIG };
88 
89 int TST_TOTAL = 2;
90 
91 int main(int ac, char **av)
92 {
93 
94 	int lc, i;
95 	pid_t child_pid;
96 	int status, sig;
97 
98 	tst_parse_opts(ac, av, NULL, NULL);
99 
100 	setup();
101 
102 	for (lc = 0; TEST_LOOPING(lc); lc++) {
103 
104 		tst_count = 0;
105 
106 		for (i = 0; i < TST_TOTAL; ++i) {
107 
108 			switch (child_pid = FORK_OR_VFORK()) {
109 
110 			case -1:
111 				/* fork() failed */
112 				tst_resm(TFAIL, "fork() failed");
113 				continue;
114 
115 			case 0:
116 				/* Child */
117 				if (i == 1) {
118 					sig = SIGUSR2;
119 					TEST(prctl(option[i], sig));
120 				} else {
121 					TEST(prctl(option[i], &sig));
122 				}
123 
124 				if (TEST_RETURN == 0) {
125 					exit(0);
126 				} else {
127 					tst_resm(TWARN | TTERRNO,
128 						 "prctl() returned %ld",
129 						 TEST_RETURN);
130 					exit(1);
131 				}
132 
133 			default:
134 				/* Parent */
135 				if ((waitpid(child_pid, &status, 0)) < 0) {
136 					tst_resm(TFAIL, "waitpid() failed");
137 					continue;
138 				}
139 
140 				if ((WIFEXITED(status)) &&
141 				    (WEXITSTATUS(status) == 0)) {
142 					tst_resm(TPASS, "Test Passed");
143 				} else {
144 					tst_resm(TFAIL, "Test Failed");
145 				}
146 
147 			}
148 		}
149 	}
150 
151 	/* cleanup and exit */
152 	cleanup();
153 	tst_exit();
154 
155 }
156 
157 /* setup() - performs all ONE TIME setup for this test */
158 void setup(void)
159 {
160 
161 	tst_sig(FORK, DEF_HANDLER, cleanup);
162 
163 	TEST_PAUSE;
164 
165 }
166 
167 /*
168  *cleanup() -  performs all ONE TIME cleanup for this test at
169  *		completion or premature exit.
170  */
171 void cleanup(void)
172 {
173 
174 }
175