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 * getppid02.c
23 *
24 * DESCRIPTION
25 * Testcase to check the basic functionality of the getppid() syscall.
26 *
27 * USAGE: <for command-line>
28 * getppid02 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
29 * where, -c n : Run n copies concurrently.
30 * -f : Turn off functionality Testing.
31 * -i n : Execute test n times.
32 * -I x : Execute test for x seconds.
33 * -P x : Pause for x seconds between iterations.
34 * -t : Turn on syscall timing.
35 *
36 * HISTORY
37 * 07/2001 Ported by Wayne Boyer
38 *
39 * RESTRICTIONS
40 * None
41 */
42 #include <sys/types.h>
43 #include <sys/wait.h>
44 #include <err.h>
45 #include <errno.h>
46 #include "test.h"
47
48 char *TCID = "getppid02";
49 int TST_TOTAL = 1;
50
51 void setup(void);
52 void cleanup(void);
53
main(int ac,char ** av)54 int main(int ac, char **av)
55 {
56
57 int lc;
58 int status;
59 pid_t pid, ppid;
60
61 tst_parse_opts(ac, av, NULL, NULL);
62
63 setup();
64
65 for (lc = 0; TEST_LOOPING(lc); lc++) {
66 tst_count = 0;
67
68 ppid = getpid();
69 pid = FORK_OR_VFORK();
70 if (pid == -1)
71 tst_brkm(TBROK, cleanup, "fork failed");
72
73 if (pid == 0) {
74 TEST(getppid());
75
76 if (TEST_RETURN != ppid)
77 errx(1, "getppid failed (%ld != %d)",
78 TEST_RETURN, ppid);
79 else
80 printf("return value and parent's pid "
81 "value match\n");
82 exit(0);
83 } else {
84 if (wait(&status) == -1)
85 tst_brkm(TBROK | TERRNO, cleanup,
86 "wait failed");
87 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
88 tst_resm(TFAIL,
89 "getppid functionality incorrect");
90 }
91 }
92 cleanup();
93
94 tst_exit();
95 }
96
setup(void)97 void setup(void)
98 {
99
100 tst_sig(FORK, DEF_HANDLER, cleanup);
101
102 TEST_PAUSE;
103 }
104
cleanup(void)105 void cleanup(void)
106 {
107 }
108