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 <sys/fcntl.h>
48 #include <sys/stat.h>
49 #include <errno.h>
50 #include <signal.h>
51 #include <string.h>
52 #include "test.h"
53
54 void setup();
55 void cleanup();
56
57 char *TCID = "dup204";
58 int TST_TOTAL = 2;
59
60 int fd[2];
61 int nfd[2];
62
main(int ac,char ** av)63 int main(int ac, char **av)
64 {
65 int lc;
66 int i;
67 struct stat oldbuf, newbuf;
68
69 tst_parse_opts(ac, av, NULL, NULL);
70
71 setup();
72
73 for (lc = 0; TEST_LOOPING(lc); lc++) {
74
75 tst_count = 0;
76
77 /* loop through the test cases */
78 for (i = 0; i < TST_TOTAL; i++) {
79 TEST(dup2(fd[i], nfd[i]));
80
81 if (TEST_RETURN == -1) {
82 tst_resm(TFAIL, "call failed unexpectedly");
83 continue;
84 }
85
86 if (fstat(fd[i], &oldbuf) == -1)
87 tst_brkm(TBROK, cleanup, "fstat() #1 "
88 "failed");
89 if (fstat(nfd[i], &newbuf) == -1)
90 tst_brkm(TBROK, cleanup, "fstat() #2 "
91 "failed");
92
93 if (oldbuf.st_ino != newbuf.st_ino)
94 tst_resm(TFAIL, "original and duped "
95 "inodes do not match");
96 else
97 tst_resm(TPASS, "original and duped "
98 "inodes are the same");
99
100 if (close(TEST_RETURN) == -1)
101 tst_brkm(TBROK | TERRNO, cleanup,
102 "close failed");
103 }
104 }
105
106 cleanup();
107 tst_exit();
108 }
109
setup(void)110 void setup(void)
111 {
112 fd[0] = -1;
113
114 tst_sig(FORK, DEF_HANDLER, cleanup);
115
116 TEST_PAUSE;
117
118 tst_tmpdir();
119
120 if (pipe(fd) == -1)
121 tst_brkm(TBROK | TERRNO, cleanup, "pipe failed");
122 }
123
cleanup(void)124 void cleanup(void)
125 {
126 int i;
127
128 for (i = 0; i < ARRAY_SIZE(fd); i++) {
129 close(fd[i]);
130 close(nfd[i]);
131 }
132
133 tst_rmdir();
134 }
135