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 * getpgid01.c
23 *
24 * DESCRIPTION
25 * Testcase to check the basic functionality of getpgid().
26 *
27 * ALGORITHM
28 * block1: Does getpgid(0), and checks for error.
29 * block2: Does getpgid(getpid()) and checks for error.
30 * block3: Does getpgid(getppid()) and checks for error.
31 * block4: Verifies that getpgid(getpgid(0)) == getpgid(0).
32 * block5: Does getpgid(1) and checks for error.
33 *
34 * USAGE
35 * getpgid01
36 *
37 * HISTORY
38 * 07/2001 Ported by Wayne Boyer
39 *
40 * RESTRICTIONS
41 * Expects that there are no EPERM limitations on getting the
42 * process group ID from proc 1 (init).
43 */
44 #define _GNU_SOURCE 1
45
46 #include <errno.h>
47 #include <unistd.h>
48 #include <stdarg.h>
49 #include <sys/wait.h>
50 #include <sys/types.h>
51 #include "test.h"
52
53 void setup(void);
54 void cleanup(void);
55
56 char *TCID = "getpgid01";
57 int TST_TOTAL = 1;
58
main(int ac,char ** av)59 int main(int ac, char **av)
60 {
61 int lc;
62
63 register int pgid_0, pgid_1;
64 register int my_pid, my_ppid;
65 int ex_stat;
66
67 tst_parse_opts(ac, av, NULL, NULL);
68
69 setup();
70
71 for (lc = 0; TEST_LOOPING(lc); lc++) {
72 tst_count = 0;
73
74 if ((pgid_0 = FORK_OR_VFORK()) == -1)
75 tst_brkm(TBROK, cleanup, "fork failed");
76 if (pgid_0 > 0) {
77 while ((pgid_0 = wait(&ex_stat)) != -1) ;
78
79 if (WEXITSTATUS(ex_stat) == 0)
80 tst_resm(TPASS, "%s PASSED", TCID);
81 else
82 tst_resm(TFAIL, "%s FAILED", TCID);
83
84 exit(0);
85 }
86
87 if ((pgid_0 = getpgid(0)) == -1)
88 tst_resm(TFAIL | TERRNO, "getpgid(0) failed");
89 else
90 tst_resm(TPASS, "getpgid(0) PASSED");
91
92 //block2:
93 my_pid = getpid();
94 if ((pgid_1 = getpgid(my_pid)) == -1)
95 tst_resm(TFAIL | TERRNO, "getpgid(%d) failed", my_pid);
96
97 if (pgid_0 != pgid_1) {
98 tst_resm(TFAIL, "getpgid(my_pid=%d) != getpgid(0) "
99 "[%d != %d]", my_pid, pgid_1, pgid_0);
100 } else
101 tst_resm(TPASS, "getpgid(getpid()) PASSED");
102
103 //block3:
104 my_ppid = getppid();
105 if ((pgid_1 = getpgid(my_ppid)) == -1)
106 tst_resm(TFAIL | TERRNO, "getpgid(%d) failed", my_ppid);
107
108 if (pgid_0 != pgid_1) {
109 tst_resm(TFAIL, "getpgid(%d) != getpgid(0) [%d != %d]",
110 my_ppid, pgid_1, pgid_0);
111 } else
112 tst_resm(TPASS, "getpgid(getppid()) PASSED");
113
114 //block4:
115 if ((pgid_1 = getpgid(pgid_0)) < 0)
116 tst_resm(TFAIL | TERRNO, "getpgid(%d) failed", pgid_0);
117
118 if (pgid_0 != pgid_1) {
119 tst_resm(TFAIL, "getpgid(%d) != getpgid(0) [%d != %d]",
120 pgid_0, pgid_1, pgid_0);
121 } else
122 tst_resm(TPASS, "getpgid(%d) PASSED", pgid_0);
123
124 //block5:
125 if (getpgid(1) < 0)
126 tst_resm(TFAIL | TERRNO, "getpgid(1) failed");
127 else
128 tst_resm(TPASS, "getpgid(1) PASSED");
129 }
130 cleanup();
131 tst_exit();
132
133 }
134
setup(void)135 void setup(void)
136 {
137
138 tst_sig(FORK, DEF_HANDLER, cleanup);
139
140 TEST_PAUSE;
141 }
142
cleanup(void)143 void cleanup(void)
144 {
145 }
146