1 /*
2 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * You should have received a copy of the GNU General Public License along
13 * with this program; if not, write the Free Software Foundation, Inc.,
14 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15 *
16 */
17 /**********************************************************
18 *
19 * TEST IDENTIFIER : setresgid01
20 *
21 * EXECUTED BY : root / superuser
22 *
23 * TEST TITLE : Checking functionality of setresgid(2)
24 *
25 * TEST CASE TOTAL : 5
26 *
27 * AUTHOR : Madhu T L <madhu.tarikere@wipro.com>
28 *
29 * SIGNALS
30 * Uses SIGUSR1 to pause before test if option set.
31 * (See the parse_opts(3) man page).
32 *
33 * DESCRIPTION
34 * Verify that,
35 * 1. setresgid(2) is successful for setresgid(-1, -1, -1)
36 * 2. setresgid(2) is successful for setresgid(-1, -1, nobody)
37 * 3. setresgid(2) is successful for setresgid(-1, nobody, -1)
38 * 4. setresgid(2) is successful for setresgid(nobody, -1, -1)
39 * 5. setresgid(2) is successful for setresgid(root, root, root)
40 *
41 * Setup:
42 * Setup signal handling.
43 * Test caller is superuser
44 * Check existence of root and nobody user id's
45 * Pause for SIGUSR1 if option specified.
46 *
47 * Test:
48 * Loop if the proper options are given.
49 * Execute system call
50 * Check return value and functionality, if success,
51 * Issue PASS message
52 * Otherwise,
53 * Issue FAIL message
54 *
55 * Cleanup:
56 * Print errno log and/or timing stats if options given
57 *
58 * USAGE: <for command-line>
59 * setresgid01 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
60 * where, -c n : Run n copies concurrently.
61 * -e : Turn on errno logging.
62 * -f : Turn off functional testing
63 * -h : Show help screen
64 * -i n : Execute test n times.
65 * -I x : Execute test for x seconds.
66 * -p : Pause for SIGUSR1 before starting
67 * -P x : Pause for x seconds between iterations.
68 * -t : Turn on syscall timing.
69 *
70 ****************************************************************/
71
72 #define _GNU_SOURCE 1
73 #include <errno.h>
74 #include <pwd.h>
75 #include <sys/types.h>
76 #include <unistd.h>
77 #include "test.h"
78 #include "compat_16.h"
79
80 #define EXP_RET_VAL 0
81
82 struct test_case_t { /* test case structure */
83 uid_t *rgid; /* real GID */
84 uid_t *egid; /* effective GID */
85 uid_t *sgid; /* saved GID */
86 struct passwd *exp_rgid; /* Expected real GID */
87 struct passwd *exp_egid; /* Expected effective GID */
88 struct passwd *exp_sgid; /* Expected saved GID */
89 char *desc; /* Test description */
90 };
91
92 TCID_DEFINE(setresgid01);
93 static int testno;
94 static struct passwd nobody, root;
95 static uid_t nobody_gid, root_gid, neg = -1;
96
97 static int test_functionality(uid_t, uid_t, uid_t);
98 static void setup(void);
99 static void cleanup(void);
100
101 /* Don't change order of these test cases */
102 static struct test_case_t tdat[] = {
103 {&neg, &neg, &neg, &root, &root, &root,
104 "setresgid(-1, -1, -1)"},
105 {&neg, &neg, &nobody.pw_gid, &root, &root, &nobody,
106 "setresgid(-1, -1, nobody)"},
107 {&neg, &nobody.pw_gid, &neg, &root, &nobody, &nobody,
108 "setresgid(-1, nobody, -1)"},
109 {&nobody.pw_gid, &neg, &neg, &nobody, &nobody, &nobody,
110 "setresgid(nobody, -1, -1)"},
111 {&root.pw_gid, &root.pw_gid, &root.pw_gid, &root, &root, &root,
112 "setresgid(root, root, root)"},
113 };
114
115 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
116
main(int argc,char ** argv)117 int main(int argc, char **argv)
118 {
119 int lc;
120
121 tst_parse_opts(argc, argv, NULL, NULL);
122
123 setup();
124
125 for (lc = 0; TEST_LOOPING(lc); lc++) {
126 /* reset tst_count in case we are looping */
127 tst_count = 0;
128
129 for (testno = 0; testno < TST_TOTAL; ++testno) {
130
131 TEST(SETRESGID(cleanup, *tdat[testno].rgid, *tdat[testno].egid,
132 *tdat[testno].sgid));
133
134 if (TEST_RETURN == EXP_RET_VAL) {
135 if (!test_functionality
136 (tdat[testno].exp_rgid->pw_gid,
137 tdat[testno].exp_egid->pw_gid,
138 tdat[testno].exp_sgid->pw_gid)) {
139
140 tst_resm(TPASS, "Test for %s "
141 "successful",
142 tdat[testno].desc);
143 } else {
144 tst_resm(TFAIL, "Functionality test "
145 "for %s failed",
146 tdat[testno].desc);
147 }
148 } else {
149 tst_resm(TFAIL, "Test for %s failed; returned"
150 " %ld (expected %d), errno %d (expected"
151 " 0)", tdat[testno].desc,
152 TEST_RETURN, EXP_RET_VAL, TEST_ERRNO);
153 }
154 }
155 }
156 cleanup();
157
158 tst_exit();
159 }
160
test_functionality(uid_t exp_rgid,uid_t exp_egid,uid_t exp_sgid)161 static int test_functionality(uid_t exp_rgid, uid_t exp_egid, uid_t exp_sgid)
162 {
163 uid_t cur_rgid, cur_egid, cur_sgid;
164
165 /* Get current real, effective and saved group id's */
166 if (getresgid(&cur_rgid, &cur_egid, &cur_sgid) == -1) {
167 tst_brkm(TBROK, cleanup, "getresgid() failed");
168
169 }
170
171 if ((cur_rgid == exp_rgid) && (cur_egid == exp_egid)
172 && (cur_sgid == exp_sgid)) {
173 return 0;
174 }
175 return 1;
176 }
177
178 /*
179 * setup()
180 * performs all ONE TIME setup for this test
181 */
setup(void)182 void setup(void)
183 {
184 struct passwd *passwd_p;
185
186 tst_require_root();
187
188 tst_sig(NOFORK, DEF_HANDLER, cleanup);
189
190 if ((passwd_p = getpwnam("root")) == NULL) {
191 tst_brkm(TBROK, NULL, "getpwnam() failed for root");
192
193 }
194 root = *passwd_p;
195 GID16_CHECK((root_gid = root.pw_gid), "setresgid", cleanup)
196
197 if ((passwd_p = getpwnam("nobody")) == NULL) {
198 tst_brkm(TBROK, NULL, "nobody user id doesn't exist");
199
200 }
201 nobody = *passwd_p;
202 GID16_CHECK((nobody_gid = nobody.pw_gid), "setresgid", cleanup)
203
204 /* Pause if that option was specified
205 * TEST_PAUSE contains the code to fork the test with the -c option.
206 */
207 TEST_PAUSE;
208 }
209
210 /*
211 * cleanup()
212 * performs all ONE TIME cleanup for this test at
213 * completion or premature exit
214 */
cleanup(void)215 void cleanup(void)
216 {
217
218 }
219