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 * dup202.c
23 *
24 * DESCRIPTION
25 * Is the access mode the same for both file descriptors?
26 * 0: read only ? "0444"
27 * 1: write only ? "0222"
28 * 2: read/write ? "0666"
29 *
30 * ALGORITHM
31 * Creat a file with each access mode; dup each file descriptor;
32 * stat each file descriptor and compare modes of each pair
33 *
34 * USAGE: <for command-line>
35 * dup202 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
36 * where, -c n : Run n copies concurrently.
37 * -f : Turn off functionality Testing.
38 * -i n : Execute test n times.
39 * -I x : Execute test for x seconds.
40 * -P x : Pause for x seconds between iterations.
41 * -t : Turn on syscall timing.
42 *
43 * HISTORY
44 * 07/2001 Ported by Wayne Boyer
45 *
46 * RESTRICTIONS
47 * None
48 */
49
50 #include <sys/types.h>
51 #include <sys/stat.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdio.h>
55 #include "test.h"
56 #include "safe_macros.h"
57
58 char *TCID = "dup202";
59 int TST_TOTAL = 3;
60
61 void setup(void);
62 void cleanup(void);
63
64 char testfile[40];
65 int fail;
66 int newfd;
67
68 /* set these to a known index into our local file descriptor table */
69 int duprdo = 10, dupwro = 20, duprdwr = 30;
70
71 struct test_case_t {
72 int *nfd;
73 mode_t mode;
74 } TC[] = {
75 /* The first test creat(es) a file with mode 0444 */
76 {
77 &duprdo, (S_IRUSR | S_IRGRP | S_IROTH)},
78 /* The second test creat(es) a file with mode 0222 */
79 {
80 &dupwro, (S_IWUSR | S_IWGRP | S_IWOTH)},
81 /* The third test creat(es) a file with mode 0666 */
82 {
83 &duprdwr,
84 (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH)}
85 };
86
main(int ac,char ** av)87 int main(int ac, char **av)
88 {
89 int lc;
90 int i, ofd;
91 struct stat oldbuf, newbuf;
92
93 tst_parse_opts(ac, av, NULL, NULL);
94
95 setup();
96
97 for (lc = 0; TEST_LOOPING(lc); lc++) {
98
99 tst_count = 0;
100
101 /* loop through the test cases */
102 for (i = 0; i < TST_TOTAL; i++) {
103
104 if ((ofd = creat(testfile, TC[i].mode)) == -1)
105 tst_brkm(TBROK | TERRNO, cleanup,
106 "creat failed");
107
108 TEST(dup2(ofd, *TC[i].nfd));
109
110 if (TEST_RETURN == -1) {
111 tst_resm(TFAIL | TERRNO,
112 "call failed unexpectedly");
113 continue;
114 }
115
116 /* stat the original file */
117 SAFE_FSTAT(cleanup, ofd, &oldbuf);
118
119 /* stat the duped file */
120 SAFE_FSTAT(cleanup, *TC[i].nfd, &newbuf);
121
122 if (oldbuf.st_mode != newbuf.st_mode)
123 tst_resm(TFAIL, "original and dup "
124 "modes do not match");
125 else
126 tst_resm(TPASS, "fstat shows new and "
127 "old modes are the same");
128
129 /* remove the file so that we can use it again */
130 if (close(*TC[i].nfd) == -1)
131 perror("close failed");
132 if (close(ofd) == -1)
133 perror("close failed");
134 if (unlink(testfile) == -1)
135 perror("unlink failed");
136 }
137 }
138
139 cleanup();
140 tst_exit();
141 }
142
143 /*
144 * setup() - performs all ONE TIME setup for this test.
145 */
setup(void)146 void setup(void)
147 {
148
149 tst_sig(NOFORK, DEF_HANDLER, cleanup);
150
151 TEST_PAUSE;
152
153 tst_tmpdir();
154
155 (void)umask(0);
156
157 sprintf(testfile, "dup202.%d", getpid());
158 }
159
160 /*
161 * cleanup() - performs all ONE TIME cleanup for this test at
162 * completion or premature exit.
163 */
cleanup(void)164 void cleanup(void)
165 {
166 tst_rmdir();
167 }
168