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 : iopl02 20 * 21 * EXECUTED BY : superuser 22 * 23 * TEST TITLE : Tests for error conditions 24 * 25 * TEST CASE TOTAL : 2 26 * 27 * AUTHOR : Subhab Biwas <subhabrata.biswas (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) iopl(2) returns -1 and sets errno to EINVAL for privilege 36 * level greater than 3. 37 * 2) iopl(2) returns -1 and sets errno to EPERM if the current 38 * user is not the super-user. 39 * 40 * Setup: 41 * Setup signal handling. 42 * Test caller is superuser 43 * Set expected errnos for logging 44 * Pause for SIGUSR1 if option specified. 45 * 46 * Test: 47 * Loop if the proper options are given. 48 * Execute system call 49 * Check return code and error number, if matching, 50 * Issue PASS message 51 * Otherwise, 52 * Issue FAIL message 53 * Perform testcase specific cleanup (if needed) 54 * 55 * Cleanup: 56 * Print errno log and/or timing stats if options given 57 * 58 * USAGE: <for command-line> 59 * iopl02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] 60 * where, -c n : Run n copies concurrently. 61 * -e : Turn on errno logging. 62 * -h : Show help screen 63 * -f : Turn off functional testing 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 char *TCID = "iopl02"; 73 74 #if defined __i386__ || defined(__x86_64__) 75 76 #include <errno.h> 77 #include <unistd.h> 78 #include <sys/io.h> 79 #include <pwd.h> 80 #include "test.h" 81 #include "safe_macros.h" 82 83 #define INVALID_LEVEL 4 /* Invalid privilege level */ 84 #define EXP_RET_VAL -1 85 86 static void setup(); 87 static int setup1(void); 88 static void cleanup1(); 89 static void cleanup(); 90 91 static char nobody_uid[] = "nobody"; 92 struct passwd *ltpuser; 93 94 struct test_cases_t { 95 int level; /* I/O privilege level */ 96 char *desc; /* test case description */ 97 int exp_errno; /* expected error number */ 98 } test_cases[] = { 99 { 100 INVALID_LEVEL, "Invalid privilege level", EINVAL}, { 101 1, "Non super-user", EPERM} 102 }; 103 104 int TST_TOTAL = sizeof(test_cases) / sizeof(test_cases[0]); 105 106 int main(int ac, char **av) 107 { 108 109 int lc, i; 110 111 tst_parse_opts(ac, av, NULL, NULL); 112 113 setup(); 114 115 for (lc = 0; TEST_LOOPING(lc); lc++) { 116 117 tst_count = 0; 118 119 for (i = 0; i < TST_TOTAL; ++i) { 120 121 if (i == 1) { 122 /* setup Non super-user for second test */ 123 if (setup1()) { 124 /* setup1() failed, skip this test */ 125 continue; 126 } 127 } 128 129 /* 130 * Call iopl(2) 131 */ 132 TEST(iopl(test_cases[i].level)); 133 134 if ((TEST_RETURN == EXP_RET_VAL) && 135 (TEST_ERRNO == test_cases[i].exp_errno)) { 136 tst_resm(TPASS, "Expected failure for %s, " 137 "errno: %d", test_cases[i].desc, 138 TEST_ERRNO); 139 } else { 140 tst_resm(TFAIL, "Unexpected results for %s ; " 141 "returned %ld (expected %d), errno %d " 142 "(expected errno %d)", 143 test_cases[i].desc, 144 TEST_RETURN, EXP_RET_VAL, 145 TEST_ERRNO, test_cases[i].exp_errno); 146 } 147 148 if (i == 1) { 149 /* revert back to super user */ 150 cleanup1(); 151 } 152 153 } 154 } 155 156 /* cleanup and exit */ 157 cleanup(); 158 159 tst_exit(); 160 161 } 162 163 /* setup1() - set up non-super user for second test case */ 164 int setup1(void) 165 { 166 /* switch to "nobody" user */ 167 if (seteuid(ltpuser->pw_uid) == -1) { 168 tst_resm(TWARN, "Failed to set effective" 169 "uid to %d", ltpuser->pw_uid); 170 return 1; 171 } 172 return 0; 173 } 174 175 /* cleanup1() - reset to super user for first test case */ 176 void cleanup1(void) 177 { 178 /* reset user as root */ 179 SAFE_SETEUID(NULL, 0); 180 } 181 182 /* setup() - performs all ONE TIME setup for this test */ 183 void setup(void) 184 { 185 tst_require_root(); 186 187 tst_sig(NOFORK, DEF_HANDLER, cleanup); 188 189 /* Check if "nobody" user id exists */ 190 if ((ltpuser = getpwnam(nobody_uid)) == NULL) { 191 tst_brkm(TBROK, NULL, "\"nobody\" user id doesn't exist"); 192 } 193 194 TEST_PAUSE; 195 196 } 197 198 /* 199 *cleanup() - performs all ONE TIME cleanup for this test at 200 * completion or premature exit. 201 */ 202 void cleanup(void) 203 { 204 205 } 206 207 #else /* __i386__ */ 208 209 #include "test.h" 210 #include "safe_macros.h" 211 212 int TST_TOTAL = 0; 213 214 int main(void) 215 { 216 tst_resm(TPASS, 217 "LSB v1.3 does not specify iopl() for this architecture."); 218 tst_exit(); 219 } 220 221 #endif /* __i386__ */ 222
