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 * dup204.c
23 *
24 * DESCRIPTION
25 * Testcase to check the basic functionality of dup2(2).
26 *
27 * ALGORITHM
28 * attempt to call dup2() on read/write ends of a pipe
29 *
30 * USAGE: <for command-line>
31 * dup204 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
32 * where, -c n : Run n copies concurrently.
33 * -f : Turn off functionality Testing.
34 * -i n : Execute test n times.
35 * -I x : Execute test for x seconds.
36 * -P x : Pause for x seconds between iterations.
37 * -t : Turn on syscall timing.
38 *
39 * RESTRICTION
40 * NONE
41 */
42
43 #ifndef _GNU_SOURCE
44 #define _GNU_SOURCE
45 #endif
46 #include <sys/types.h>
47 #include <fcntl.h>
48 #include <sys/stat.h>
49 #include <errno.h>
50 #include <signal.h>
51 #include <string.h>
52 #include "test.h"
53 #include "safe_macros.h"
54
55 void setup();
56 void cleanup();
57
58 char *TCID = "dup204";
59 int TST_TOTAL = 2;
60
61 int fd[2];
62 int nfd[2];
63
main(int ac,char ** av)64 int main(int ac, char **av)
65 {
66 int lc;
67 int i;
68 struct stat oldbuf, newbuf;
69
70 tst_parse_opts(ac, av, NULL, NULL);
71
72 setup();
73
74 for (lc = 0; TEST_LOOPING(lc); lc++) {
75
76 tst_count = 0;
77
78 /* loop through the test cases */
79 for (i = 0; i < TST_TOTAL; i++) {
80 TEST(dup2(fd[i], nfd[i]));
81
82 if (TEST_RETURN == -1) {
83 tst_resm(TFAIL, "call failed unexpectedly");
84 continue;
85 }
86
87 SAFE_FSTAT(cleanup, fd[i], &oldbuf);
88 SAFE_FSTAT(cleanup, nfd[i], &newbuf);
89
90 if (oldbuf.st_ino != newbuf.st_ino)
91 tst_resm(TFAIL, "original and duped "
92 "inodes do not match");
93 else
94 tst_resm(TPASS, "original and duped "
95 "inodes are the same");
96
97 SAFE_CLOSE(cleanup, TEST_RETURN);
98 }
99 }
100
101 cleanup();
102 tst_exit();
103 }
104
setup(void)105 void setup(void)
106 {
107 fd[0] = -1;
108
109 tst_sig(FORK, DEF_HANDLER, cleanup);
110
111 TEST_PAUSE;
112
113 tst_tmpdir();
114
115 SAFE_PIPE(cleanup, fd);
116 }
117
cleanup(void)118 void cleanup(void)
119 {
120 int i;
121
122 for (i = 0; i < ARRAY_SIZE(fd); i++) {
123 close(fd[i]);
124 close(nfd[i]);
125 }
126
127 tst_rmdir();
128 }
129