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 : syslog11
20 *
21 * EXECUTED BY : root / superuser
22 *
23 * TEST TITLE : Basic tests for syslog(2)
24 *
25 * TEST CASE TOTAL : 11
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, syslog(2) is successful for type ranging from 1 to 8
35 *
36 * Setup:
37 * Setup signal handling.
38 * Test caller is superuser
39 * Check existence of user nobody
40 * Pause for SIGUSR1 if option specified.
41 *
42 * Test:
43 * Loop if the proper options are given.
44 * Execute system call
45 * Check return value, if not successful,
46 * Issue FAIL message
47 * Otherwise,
48 * Issue PASS message
49 *
50 * Cleanup:
51 * Print errno log and/or timing stats if options given
52 *
53 * USAGE: <for command-line>
54 * syslog11 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
55 * where, -c n : Run n copies concurrently.
56 * -e : Turn on errno logging.
57 * -f : Turn off functional testing
58 * -h : Show help screen
59 * -i n : Execute test n times.
60 * -I x : Execute test for x seconds.
61 * -p : Pause for SIGUSR1 before starting
62 * -P x : Pause for x seconds between iterations.
63 * -t : Turn on syscall timing.
64 *
65 ****************************************************************/
66
67 #include <errno.h>
68 #include <pwd.h>
69 #include <sys/types.h>
70 #include <unistd.h>
71 #include <linux/unistd.h>
72 #include <sys/syscall.h>
73 #include "test.h"
74 #include "safe_macros.h"
75
76 #define UNEXP_RET_VAL -1
77
78 struct test_case_t { /* test case structure */
79 int type; /* 1st arg. */
80 char *buf; /* 2nd arg. */
81 int len; /* 3rd arg. */
82 int (*setup) (void); /* Individual setup routine */
83 void (*cleanup) (void); /* Individual cleanup routine */
84 char *desc; /* Test description */
85 };
86
87 char *TCID = "syslog11";
88 static int testno;
89 static char buf;
90 static struct passwd *ltpuser;
91
92 static void setup(void);
93 static void cleanup(void);
94 static int setup1(void);
95 static void cleanup1(void);
96
97 #define syslog(arg1, arg2, arg3) syscall(__NR_syslog, arg1, arg2, arg3)
98
99 static struct test_case_t tdat[] = {
100 /* Type 0 and 1 are currently not implemented, always returns success */
101 {0, &buf, 0, NULL, NULL, "type 0/Close the log"},
102 {1, &buf, 0, NULL, NULL, "type 1/Open the log"},
103 {2, &buf, 0, NULL, NULL, "type 2/Read from the log"},
104 {3, &buf, 0, NULL, NULL, "type 3/Read ring buffer"},
105 {3, &buf, 0, setup1, cleanup1, "type 3/Read ring buffer for non-root "
106 "user"},
107 /* Next two lines will clear dmesg. Uncomment if that is okay. -Robbie Williamson */
108 /* { 4, &buf, 0, NULL, NULL, "type 4/Read and clear ring buffer" }, */
109 /* { 5, &buf, 0, NULL, NULL, "type 5/Clear ring buffer" }, */
110
111 {8, NULL, 1, NULL, NULL, "type 8/Set log level to 1"},
112 {8, NULL, 7, NULL, NULL, "type 8/Set log level to 7(default)"},
113 {6, NULL, 0, NULL, NULL, "type 6/Disable printk's to console"},
114 {7, NULL, 0, NULL, NULL, "type 7/Enable printk's to console"},
115 };
116
117 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
118
main(int argc,char ** argv)119 int main(int argc, char **argv)
120 {
121 int lc;
122
123 tst_parse_opts(argc, argv, NULL, NULL);
124 setup();
125
126 for (lc = 0; TEST_LOOPING(lc); lc++) {
127 /* reset tst_count in case we are looping */
128 tst_count = 0;
129
130 for (testno = 0; testno < TST_TOTAL; ++testno) {
131
132 if (tdat[testno].setup && tdat[testno].setup()) {
133 /* Setup failed, skip this testcase */
134 continue;
135 }
136
137 TEST(syslog(tdat[testno].type, tdat[testno].buf,
138 tdat[testno].len));
139
140 if (TEST_RETURN == UNEXP_RET_VAL) {
141 if (TEST_ERRNO == EPERM && geteuid() != 0) {
142 tst_resm(TPASS,
143 "syslog() passed for %s (non-root EPERM is OK)",
144 tdat[testno].desc);
145 } else {
146 tst_resm(TFAIL,
147 "syslog() failed for %s: errno "
148 "%d (%s)", tdat[testno].desc,
149 TEST_ERRNO, strerror(errno));
150 }
151 } else {
152 tst_resm(TPASS, "syslog() successful for %s",
153 tdat[testno].desc);
154 }
155
156 if (tdat[testno].cleanup) {
157 tdat[testno].cleanup();
158 }
159 }
160 }
161 cleanup();
162
163 tst_exit();
164 }
165
setup1(void)166 int setup1(void)
167 {
168 /* Change effective user id to nodody */
169 if (seteuid(ltpuser->pw_uid) == -1) {
170 tst_resm(TBROK, "seteuid failed to set the effective"
171 " uid to %d", ltpuser->pw_uid);
172 return 1;
173 }
174 return 0;
175 }
176
cleanup1(void)177 void cleanup1(void)
178 {
179 /* Change effective user id to root */
180 SAFE_SETEUID(NULL, 0);
181 }
182
183 /*
184 * setup()
185 * performs all ONE TIME setup for this test
186 */
setup(void)187 void setup(void)
188 {
189 tst_require_root();
190
191 tst_sig(NOFORK, DEF_HANDLER, cleanup);
192
193 /* Check for nobody_uid user id */
194 if ((ltpuser = getpwnam("nobody")) == NULL) {
195 tst_brkm(TBROK, NULL, "nobody user id doesn't exist");
196 }
197
198 /* Pause if that option was specified
199 * TEST_PAUSE contains the code to fork the test with the -c option.
200 */
201 TEST_PAUSE;
202 }
203
204 /*
205 * cleanup()
206 * performs all ONE TIME cleanup for this test at
207 * completion or premature exit
208 */
cleanup(void)209 void cleanup(void)
210 {
211
212 }
213