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 <sys/fcntl.h>
63 #include <sys/stat.h>
64 #include <unistd.h>
65 #include <errno.h>
66
67 #include "test.h"
68
69 void setup();
70 void cleanup();
71
72 char *TCID = "rename13";
73 int TST_TOTAL = 1;
74
75 int fd;
76 char fname[255], mname[255];
77 struct stat buf1, buf2;
78 dev_t olddev;
79 ino_t oldino;
80
main(int ac,char ** av)81 int main(int ac, char **av)
82 {
83 int lc;
84
85 /*
86 * parse standard options
87 */
88 tst_parse_opts(ac, av, NULL, NULL);
89
90 /*
91 * perform global setup for test
92 */
93 setup();
94
95 /*
96 * check looping state if -i option given
97 */
98 for (lc = 0; TEST_LOOPING(lc); lc++) {
99
100 tst_count = 0;
101
102 /*
103 * TEST rename()works when
104 * both old file and new file link to the same file
105 */
106
107 /* Call rename(2) */
108 TEST(rename(fname, mname));
109
110 if (TEST_RETURN == -1) {
111 tst_resm(TFAIL, "rename(%s, %s) failed", fname, mname);
112 continue;
113 }
114
115 /* check the existence of "new", and get the status */
116 if (stat(mname, &buf2) == -1) {
117 tst_brkm(TBROK, cleanup, "failed to stat file "
118 "%s in rename()", mname);
119
120 }
121
122 /* check the existence of "old", and get the status */
123 if (stat(fname, &buf1) == -1) {
124 tst_brkm(TBROK, cleanup, "failed to stat file "
125 "%s in rename()", fname);
126
127 }
128
129 /* verify the new file is the same as the original */
130 if (buf2.st_dev != olddev || buf2.st_ino != oldino) {
131 tst_resm(TFAIL,
132 "rename() failed: new file does "
133 "not point to the same file as old "
134 "file");
135 continue;
136 }
137
138 /* verify the old file is unchanged */
139 if (buf1.st_dev != olddev || buf1.st_ino != oldino) {
140 tst_resm(TFAIL,
141 "rename() failed: old file does "
142 "not point to the original file");
143 continue;
144 }
145
146 tst_resm(TPASS, "functionality of rename() is correct");
147 }
148
149 cleanup();
150 tst_exit();
151 }
152
153 /*
154 * setup() - performs all ONE TIME setup for this test.
155 */
setup(void)156 void setup(void)
157 {
158
159 tst_sig(NOFORK, DEF_HANDLER, cleanup);
160
161 TEST_PAUSE;
162
163 /* Create a temporary directory and make it current. */
164 tst_tmpdir();
165
166 sprintf(fname, "./tfile_%d", getpid());
167 sprintf(mname, "./rnfile_%d", getpid());
168
169 SAFE_TOUCH(cleanup, fname, 0700, NULL);
170
171 if (stat(fname, &buf1) == -1) {
172 tst_brkm(TBROK, cleanup, "failed to stat file %s"
173 "in rename()", fname);
174
175 }
176
177 /* save the dev and inode */
178 olddev = buf1.st_dev;
179 oldino = buf1.st_ino;
180
181 /* link the "new" file to the "old" file */
182 if (link(fname, mname) == -1) {
183 tst_brkm(TBROK, cleanup,
184 "link from %s to %s failed!", fname, mname);
185 }
186 }
187
188 /*
189 * cleanup() - performs all ONE TIME cleanup for this test at
190 * completion or premature exit.
191 */
cleanup(void)192 void cleanup(void)
193 {
194
195 /*
196 * Remove the temporary directory.
197 */
198 tst_rmdir();
199
200 }
201