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 : syslog12 20 * 21 * EXECUTED BY : root / superuser 22 * 23 * TEST TITLE : Checking error conditions for syslog(2) 24 * 25 * TEST CASE TOTAL : 7 26 * 27 * AUTHOR : Madhu T L <madhu.tarikere (at) 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. syslog(2) fails with EINVAL for invalid type/command 36 * 2. syslog(2) fails with EFAULT for buffer outside program's accessible 37 * address space. 38 * 3. syslog(2) fails with EINVAL for NULL buffer argument. 39 * 4. syslog(2) fails with EINVAL for length arg. set to negative value. 40 * 5. syslog(2) fails with EPERM for non-root user. 41 * 6. syslog(2) fails with EINVAL for console level less than 0. 42 * 7. syslog(2) fails with EINVAL for console level greater than 8. 43 * 44 * Setup: 45 * Setup signal handling. 46 * Test caller is superuser 47 * Check existence of user nobody 48 * Set expected errnos 49 * Pause for SIGUSR1 if option specified. 50 * 51 * Test: 52 * Loop if the proper options are given. 53 * Execute system call 54 * Check return value and errno, if matching, 55 * Issue PASS message 56 * Otherwise, 57 * Issue FAIL message 58 * 59 * Cleanup: 60 * Print errno log and/or timing stats if options given 61 * 62 * USAGE: <for command-line> 63 * syslog12 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t] 64 * where, -c n : Run n copies concurrently. 65 * -e : Turn on errno logging. 66 * -f : Turn off functional testing 67 * -h : Show help screen 68 * -i n : Execute test n times. 69 * -I x : Execute test for x seconds. 70 * -p : Pause for SIGUSR1 before starting 71 * -P x : Pause for x seconds between iterations. 72 * -t : Turn on syscall timing. 73 * 74 ****************************************************************/ 75 76 #include <errno.h> 77 #include <pwd.h> 78 #include <sys/types.h> 79 #include <unistd.h> 80 #include <signal.h> 81 #include <linux/unistd.h> 82 #include <sys/syscall.h> 83 #include "test.h" 84 #include "safe_macros.h" 85 86 #define EXP_RET_VAL -1 87 88 struct test_case_t { /* test case structure */ 89 int type; /* 1st arg */ 90 char *buf; /* 2nd arg */ 91 int len; /* 3rd arg */ 92 int exp_errno; /* Expected errno */ 93 int (*setup) (void); /* Individual setup routine */ 94 void (*cleanup) (void); /* Individual cleanup routine */ 95 char *desc; /* Test description */ 96 }; 97 98 char *TCID = "syslog12"; 99 static int testno; 100 101 static char buf; 102 static struct passwd *ltpuser; 103 104 static void setup(void); 105 static void cleanup(void); 106 static int setup1(void); 107 static void cleanup1(void); 108 109 #define syslog(arg1, arg2, arg3) syscall(__NR_syslog, arg1, arg2, arg3) 110 111 static struct test_case_t tdat[] = { 112 {100, &buf, 0, EINVAL, NULL, NULL, "invalid type/command"}, 113 {2, NULL, 0, EINVAL, NULL, NULL, "NULL buffer argument"}, 114 {3, &buf, -1, EINVAL, NULL, NULL, "negative length argument"}, 115 {2, &buf, 0, EPERM, setup1, cleanup1, "non-root user"}, 116 {8, &buf, -1, EINVAL, NULL, NULL, "console level less than 0"}, 117 {8, &buf, 9, EINVAL, NULL, NULL, "console level greater than 8"}, 118 }; 119 120 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); 121 122 void timeout(int sig) 123 { 124 tst_resm(TWARN, "syslog() timeout after 1s" 125 " for %s", tdat[testno].desc); 126 } 127 128 int main(int argc, char **argv) 129 { 130 int lc; 131 struct sigaction sa; 132 int ret; 133 134 tst_parse_opts(argc, argv, NULL, NULL); 135 136 setup(); 137 138 memset(&sa, 0, sizeof(struct sigaction)); 139 sa.sa_handler = timeout; 140 sa.sa_flags = 0; 141 sigaction(SIGALRM, &sa, NULL); 142 143 for (lc = 0; TEST_LOOPING(lc); lc++) { 144 /* reset tst_count in case we are looping */ 145 tst_count = 0; 146 147 for (testno = 0; testno < TST_TOTAL; ++testno) { 148 149 if (tdat[testno].setup && tdat[testno].setup()) { 150 /* Setup failed, skip this testcase */ 151 continue; 152 } 153 154 alarm(1); 155 156 TEST(syslog(tdat[testno].type, tdat[testno].buf, 157 tdat[testno].len)); 158 159 alarm(0); 160 /* syslog returns an int, so we need to turn the long 161 * TEST_RETURN into an int to test with */ 162 ret = TEST_RETURN; 163 if ((ret == EXP_RET_VAL) && 164 (TEST_ERRNO == tdat[testno].exp_errno)) { 165 tst_resm(TPASS, "syslog() failed as expected" 166 " for %s : errno %d", 167 tdat[testno].desc, TEST_ERRNO); 168 } else { 169 tst_resm(TFAIL, "syslog() returned " 170 "unexpected results for %s ; returned" 171 " %d (expected %d), errno %d (expected" 172 " %d)", tdat[testno].desc, 173 ret, EXP_RET_VAL, TEST_ERRNO, 174 tdat[testno].exp_errno); 175 } 176 177 if (tdat[testno].cleanup) { 178 tdat[testno].cleanup(); 179 } 180 } 181 } 182 cleanup(); 183 184 tst_exit(); 185 } 186 187 int setup1(void) 188 { 189 /* Change effective user id to nodody */ 190 if (seteuid(ltpuser->pw_uid) == -1) { 191 tst_resm(TBROK, "seteuid failed to set the effective" 192 " uid to %d", ltpuser->pw_uid); 193 return 1; 194 } 195 return 0; 196 } 197 198 void cleanup1(void) 199 { 200 /* Change effective user id to root */ 201 SAFE_SETEUID(NULL, 0); 202 } 203 204 /* 205 * setup() 206 * performs all ONE TIME setup for this test 207 */ 208 void setup(void) 209 { 210 tst_require_root(); 211 212 tst_sig(NOFORK, DEF_HANDLER, cleanup); 213 214 /* Check for nobody_uid user id */ 215 if ((ltpuser = getpwnam("nobody")) == NULL) { 216 tst_brkm(TBROK, NULL, "nobody user id doesn't exist"); 217 } 218 219 /* Pause if that option was specified 220 * TEST_PAUSE contains the code to fork the test with the -c option. 221 */ 222 TEST_PAUSE; 223 } 224 225 /* 226 * cleanup() 227 * performs all ONE TIME cleanup for this test at 228 * completion or premature exit 229 */ 230 void cleanup(void) 231 { 232 233 } 234
