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 * Test Name: chmod04
22 *
23 * Test Description:
24 * Verify that, chmod(2) will succeed to change the mode of a directory
25 * and set the sticky bit on it if invoked by non-root (uid != 0) process
26 * with the following constraints,
27 * - the process is the owner of the directory.
28 * - the effective group ID or one of the supplementary group ID's of the
29 * process is equal to the group ID of the directory.
30 *
31 * Expected Result:
32 * chmod() should return value 0 on success and succeeds to set sticky bit
33 * on the specified directory.
34 *
35 * Algorithm:
36 * Setup:
37 * Setup signal handling.
38 * Create temporary directory.
39 * Pause for SIGUSR1 if option specified.
40 *
41 * Test:
42 * Loop if the proper options are given.
43 * Execute system call
44 * Check return code, if system call failed (return=-1)
45 * Log the errno and Issue a FAIL message.
46 * Otherwise,
47 * Verify the Functionality of system call
48 * if successful,
49 * Issue Functionality-Pass message.
50 * Otherwise,
51 * Issue Functionality-Fail message.
52 * Cleanup:
53 * Print errno log and/or timing stats if options given
54 * Delete the temporary directory created.
55 *
56 * Usage: <for command-line>
57 * chmod04 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
58 * where, -c n : Run n copies concurrently.
59 * -f : Turn off functionality Testing.
60 * -i n : Execute test n times.
61 * -I x : Execute test for x seconds.
62 * -P x : Pause for x seconds between iterations.
63 * -t : Turn on syscall timing.
64 *
65 * HISTORY
66 * 07/2001 Ported by Wayne Boyer
67 *
68 * RESTRICTIONS:
69 * This test should be run by 'non-super-user' only.
70 *
71 */
72
73 #include <stdio.h>
74 #include <sys/types.h>
75 #include <sys/stat.h>
76 #include <sys/fcntl.h>
77 #include <errno.h>
78 #include <string.h>
79 #include <signal.h>
80 #include <pwd.h>
81
82 #include "test.h"
83
84 #define DIR_MODE S_IRWXU | S_IRWXG | S_IRWXO
85 #define PERMS 01777 /*
86 * Mode permissions of test directory with
87 * sticky bit set.
88 */
89 #define TESTDIR "testdir_4"
90
91 char *TCID = "chmod04";
92 int TST_TOTAL = 1;
93 char nobody_uid[] = "nobody";
94 struct passwd *ltpuser;
95
96 void setup();
97 void cleanup();
98
main(int ac,char ** av)99 int main(int ac, char **av)
100 {
101 struct stat stat_buf; /* stat struct. */
102 int lc;
103 mode_t dir_mode; /* mode permissions set on testdirectory */
104
105 tst_parse_opts(ac, av, NULL, NULL);
106
107 setup();
108
109 for (lc = 0; TEST_LOOPING(lc); lc++) {
110
111 tst_count = 0;
112
113 /*
114 * Call chmod(2) with mode argument to
115 * set sticky bit on TESTDIR
116 */
117 TEST(chmod(TESTDIR, PERMS));
118
119 if (TEST_RETURN == -1) {
120 tst_resm(TFAIL | TTERRNO, "chmod(%s, %#o) failed",
121 TESTDIR, PERMS);
122 continue;
123 }
124
125 /*
126 * Get the file information using
127 * stat(2).
128 */
129 if (stat(TESTDIR, &stat_buf) < 0) {
130 tst_brkm(TFAIL, cleanup,
131 "stat(2) of %s failed, errno:%d",
132 TESTDIR, TEST_ERRNO);
133 }
134 dir_mode = stat_buf.st_mode;
135
136 /* Verify STICKY BIT SET on directory */
137 if ((dir_mode & PERMS) == PERMS) {
138 tst_resm(TPASS, "Functionality of "
139 "chmod(%s, %#o) successful",
140 TESTDIR, PERMS);
141 } else {
142 tst_resm(TFAIL, "%s: Incorrect modes 0%03o, "
143 "Expected 0%03o",
144 TESTDIR, dir_mode, PERMS);
145 }
146 }
147
148 cleanup();
149 tst_exit();
150 }
151
152 /*
153 * void
154 * setup() - performs all ONE TIME setup for this test.
155 * Create a temporary directory and cd to it.
156 * Create another test directory under temporary directory.
157 */
setup(void)158 void setup(void)
159 {
160
161 tst_sig(NOFORK, DEF_HANDLER, cleanup);
162
163 tst_require_root();
164 ltpuser = getpwnam(nobody_uid);
165 if (setuid(ltpuser->pw_uid) == -1)
166 tst_resm(TINFO | TERRNO, "setuid(%u) failed", ltpuser->pw_uid);
167
168 TEST_PAUSE;
169
170 tst_tmpdir();
171
172 /*
173 * Create a test directory under temporary directory with specified
174 * mode permissios.
175 */
176 if (mkdir(TESTDIR, DIR_MODE) < 0) {
177 tst_brkm(TBROK, cleanup, "mkdir(2) of %s failed", TESTDIR);
178 }
179 }
180
181 /*
182 * void
183 * cleanup() - performs all ONE TIME cleanup for this test at
184 * completion or premature exit.
185 * Remove the test directory and temporary directory created in setup().
186 */
cleanup(void)187 void cleanup(void)
188 {
189
190 tst_rmdir();
191
192 }
193