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 * rename13
23 *
24 * DESCRIPTION
25 * Verify rename() return successfully and performs no other action
26 * when "old" file and "new" file link to the same file.
27 *
28 * ALGORITHM
29 * Setup:
30 * Setup signal handling.
31 * Create temporary directory.
32 * Pause for SIGUSR1 if option specified.
33 *
34 * Test:
35 * Loop if the proper options are given.
36 * create the "old" file
37 * link the "new" file to the "old" file
38 * rename the "old" to the "new" file
39 * verify the "new" file points to the original file
40 * verify the "old" file exists and points to
41 * the original file
42 * Cleanup:
43 * Print errno log and/or timing stats if options given
44 * Delete the temporary directory created.
45 *
46 * USAGE
47 * rename13 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
48 * where, -c n : Run n copies concurrently.
49 * -f : Turn off functionality Testing.
50 * -i n : Execute test n times.
51 * -I x : Execute test for x seconds.
52 * -P x : Pause for x seconds between iterations.
53 * -t : Turn on syscall timing.
54 *
55 * HISTORY
56 * 07/2001 Ported by Wayne Boyer
57 *
58 * RESTRICTIONS
59 * None.
60 */
61 #include <sys/types.h>
62 #include <fcntl.h>
63 #include <sys/stat.h>
64 #include <unistd.h>
65 #include <errno.h>
66
67 #include "test.h"
68 #include "safe_macros.h"
69
70 void setup();
71 void cleanup();
72
73 char *TCID = "rename13";
74 int TST_TOTAL = 1;
75
76 int fd;
77 char fname[255], mname[255];
78 struct stat buf1, buf2;
79 dev_t olddev;
80 ino_t oldino;
81
main(int ac,char ** av)82 int main(int ac, char **av)
83 {
84 int lc;
85
86 /*
87 * parse standard options
88 */
89 tst_parse_opts(ac, av, NULL, NULL);
90
91 /*
92 * perform global setup for test
93 */
94 setup();
95
96 /*
97 * check looping state if -i option given
98 */
99 for (lc = 0; TEST_LOOPING(lc); lc++) {
100
101 tst_count = 0;
102
103 /*
104 * TEST rename()works when
105 * both old file and new file link to the same file
106 */
107
108 /* Call rename(2) */
109 TEST(rename(fname, mname));
110
111 if (TEST_RETURN == -1) {
112 tst_resm(TFAIL, "rename(%s, %s) failed", fname, mname);
113 continue;
114 }
115
116 /* check the existence of "new", and get the status */
117 SAFE_STAT(cleanup, mname, &buf2);
118
119 /* check the existence of "old", and get the status */
120 SAFE_STAT(cleanup, fname, &buf1);
121
122 /* verify the new file is the same as the original */
123 if (buf2.st_dev != olddev || buf2.st_ino != oldino) {
124 tst_resm(TFAIL,
125 "rename() failed: new file does "
126 "not point to the same file as old "
127 "file");
128 continue;
129 }
130
131 /* verify the old file is unchanged */
132 if (buf1.st_dev != olddev || buf1.st_ino != oldino) {
133 tst_resm(TFAIL,
134 "rename() failed: old file does "
135 "not point to the original file");
136 continue;
137 }
138
139 tst_resm(TPASS, "functionality of rename() is correct");
140 }
141
142 cleanup();
143 tst_exit();
144 }
145
146 /*
147 * setup() - performs all ONE TIME setup for this test.
148 */
setup(void)149 void setup(void)
150 {
151
152 tst_sig(NOFORK, DEF_HANDLER, cleanup);
153
154 TEST_PAUSE;
155
156 /* Create a temporary directory and make it current. */
157 tst_tmpdir();
158
159 sprintf(fname, "./tfile_%d", getpid());
160 sprintf(mname, "./rnfile_%d", getpid());
161
162 SAFE_TOUCH(cleanup, fname, 0700, NULL);
163
164 SAFE_STAT(cleanup, fname, &buf1);
165
166 /* save the dev and inode */
167 olddev = buf1.st_dev;
168 oldino = buf1.st_ino;
169
170 /* link the "new" file to the "old" file */
171 SAFE_LINK(cleanup, fname, mname);
172 }
173
174 /*
175 * cleanup() - performs all ONE TIME cleanup for this test at
176 * completion or premature exit.
177 */
cleanup(void)178 void cleanup(void)
179 {
180
181 /*
182 * Remove the temporary directory.
183 */
184 tst_rmdir();
185
186 }
187