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 #include "safe_macros.h"
48
49 char *TCID = "getppid02";
50 int TST_TOTAL = 1;
51
52 void setup(void);
53 void cleanup(void);
54
main(int ac,char ** av)55 int main(int ac, char **av)
56 {
57
58 int lc;
59 int status;
60 pid_t pid, ppid;
61
62 tst_parse_opts(ac, av, NULL, NULL);
63
64 setup();
65
66 for (lc = 0; TEST_LOOPING(lc); lc++) {
67 tst_count = 0;
68
69 ppid = getpid();
70 pid = FORK_OR_VFORK();
71 if (pid == -1)
72 tst_brkm(TBROK, cleanup, "fork failed");
73
74 if (pid == 0) {
75 TEST(getppid());
76
77 if (TEST_RETURN != ppid)
78 errx(1, "getppid failed (%ld != %d)",
79 TEST_RETURN, ppid);
80 else
81 printf("return value and parent's pid "
82 "value match\n");
83 exit(0);
84 } else {
85 SAFE_WAIT(cleanup, &status);
86 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
87 tst_resm(TFAIL,
88 "getppid functionality incorrect");
89 }
90 }
91 cleanup();
92
93 tst_exit();
94 }
95
setup(void)96 void setup(void)
97 {
98
99 tst_sig(FORK, DEF_HANDLER, cleanup);
100
101 TEST_PAUSE;
102 }
103
cleanup(void)104 void cleanup(void)
105 {
106 }
107