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 <fcntl.h>
77 #include <errno.h>
78 #include <string.h>
79 #include <signal.h>
80 #include <pwd.h>
81
82 #include "test.h"
83 #include "safe_macros.h"
84
85 #define DIR_MODE S_IRWXU | S_IRWXG | S_IRWXO
86 #define PERMS 01777 /*
87 * Mode permissions of test directory with
88 * sticky bit set.
89 */
90 #define TESTDIR "testdir_4"
91
92 char *TCID = "chmod04";
93 int TST_TOTAL = 1;
94 char nobody_uid[] = "nobody";
95 struct passwd *ltpuser;
96
97 void setup();
98 void cleanup();
99
main(int ac,char ** av)100 int main(int ac, char **av)
101 {
102 struct stat stat_buf; /* stat struct. */
103 int lc;
104 mode_t dir_mode; /* mode permissions set on testdirectory */
105
106 tst_parse_opts(ac, av, NULL, NULL);
107
108 setup();
109
110 for (lc = 0; TEST_LOOPING(lc); lc++) {
111
112 tst_count = 0;
113
114 /*
115 * Call chmod(2) with mode argument to
116 * set sticky bit on TESTDIR
117 */
118 TEST(chmod(TESTDIR, PERMS));
119
120 if (TEST_RETURN == -1) {
121 tst_resm(TFAIL | TTERRNO, "chmod(%s, %#o) failed",
122 TESTDIR, PERMS);
123 continue;
124 }
125
126 /*
127 * Get the file information using
128 * stat(2).
129 */
130 if (stat(TESTDIR, &stat_buf) < 0) {
131 tst_brkm(TFAIL, cleanup,
132 "stat(2) of %s failed, errno:%d",
133 TESTDIR, TEST_ERRNO);
134 }
135 dir_mode = stat_buf.st_mode;
136
137 /* Verify STICKY BIT SET on directory */
138 if ((dir_mode & PERMS) == PERMS) {
139 tst_resm(TPASS, "Functionality of "
140 "chmod(%s, %#o) successful",
141 TESTDIR, PERMS);
142 } else {
143 tst_resm(TFAIL, "%s: Incorrect modes 0%03o, "
144 "Expected 0%03o",
145 TESTDIR, dir_mode, PERMS);
146 }
147 }
148
149 cleanup();
150 tst_exit();
151 }
152
153 /*
154 * void
155 * setup() - performs all ONE TIME setup for this test.
156 * Create a temporary directory and cd to it.
157 * Create another test directory under temporary directory.
158 */
setup(void)159 void setup(void)
160 {
161
162 tst_sig(NOFORK, DEF_HANDLER, cleanup);
163
164 tst_require_root();
165 ltpuser = getpwnam(nobody_uid);
166 if (setuid(ltpuser->pw_uid) == -1)
167 tst_resm(TINFO | TERRNO, "setuid(%u) failed", ltpuser->pw_uid);
168
169 TEST_PAUSE;
170
171 tst_tmpdir();
172
173 /*
174 * Create a test directory under temporary directory with specified
175 * mode permissios.
176 */
177 SAFE_MKDIR(cleanup, TESTDIR, DIR_MODE);
178 }
179
180 /*
181 * void
182 * cleanup() - performs all ONE TIME cleanup for this test at
183 * completion or premature exit.
184 * Remove the test directory and temporary directory created in setup().
185 */
cleanup(void)186 void cleanup(void)
187 {
188
189 tst_rmdir();
190
191 }
192