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 : munlockall02 20 * 21 * EXECUTED BY : root / superuser 22 * 23 * TEST TITLE : test for EPERM error value when run as non superuser 24 * 25 * TEST CASE TOTAL : 1 26 * 27 * AUTHOR : sowmya adiga<sowmya.adiga (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 munlockall(2) returns -1 and sets errno to EPERM 35 * if the effective userid of the caller is not super-user. 36 * $ 37 * Setup: 38 * Setup signal handling. 39 * Pause for SIGUSR1 if option specified. 40 * Change effective user id to "nobody" user 41 * $ 42 * Test: 43 * Loop if the proper options are given. 44 * Execute system call 45 * Check return code, if system call failed (return=-1) && 46 * (errno set == expected errno) 47 * Issue sys call pass with expected return value and errno. 48 * otherwise, 49 * Issue sys call fails with unexpected errno. 50 * 51 * 52 * Cleanup: 53 * change effective user id to root 54 * Print errno log and/or timing stats if options given 55 * 56 * USAGE: <for command-line> 57 * munlockall02 [-c n] [-e] [-i n] [-I x] [-p x] [-t] 58 * where, -c n : Run n copies concurrently 59 * -e : Turn on errno logging. 60 * -h : Show this help screen 61 * -i n : Execute test n times. 62 * -I x : Execute test for x seconds. 63 * -p : Pause for SIGUSR1 before starting 64 * -P x : Pause for x seconds between iterations. 65 * t : Turn on syscall timing. 66 * 67 * 68 *****************************************************************************/ 69 #include <errno.h> 70 #include <pwd.h> 71 #include <sys/mman.h> 72 #include "test.h" 73 74 void setup(); 75 void cleanup(); 76 77 char *TCID = "munlockall02"; 78 int TST_TOTAL = 1; 79 80 static char nobody_uid[] = "nobody"; 81 struct passwd *ltpuser; 82 83 #if !defined(UCLINUX) 84 85 int main(int ac, char **av) 86 { 87 int lc; 88 89 tst_parse_opts(ac, av, NULL, NULL); 90 91 setup(); 92 93 /* check looping state */ 94 for (lc = 0; TEST_LOOPING(lc); lc++) { 95 96 tst_count = 0; 97 98 TEST(munlockall()); 99 /* check return code */ 100 if ((TEST_RETURN == -1) && (TEST_ERRNO == EPERM)) { 101 tst_resm(TPASS, "munlockall() failed" 102 " as expected for non-superuser" ":GOT EPERM"); 103 } else { 104 tst_resm(TCONF, "munlockall() failed to produce " 105 "expected errno :%d Got : %d, %s. ***Some distros, such as Red Hat Enterprise Linux, support non-superuser munlockall calls.***", 106 EPERM, TEST_ERRNO, strerror(TEST_ERRNO)); 107 108 } 109 } 110 111 /* cleanup and exit */ 112 cleanup(); 113 tst_exit(); 114 115 } 116 117 /* setup() - performs all ONE TIME setup for this test. */ 118 void setup(void) 119 { 120 tst_require_root(); 121 122 tst_sig(NOFORK, DEF_HANDLER, cleanup); 123 124 /* switch to nobody user */ 125 if ((ltpuser = getpwnam(nobody_uid)) == NULL) { 126 tst_brkm(TBROK, NULL, "\"nobody\"user not present"); 127 } 128 129 if (seteuid(ltpuser->pw_uid) == -1) { 130 tst_brkm(TBROK, NULL, "seteuid failed to " 131 "to set the effective uid to %d", ltpuser->pw_uid); 132 } 133 134 TEST_PAUSE; 135 } 136 137 #else 138 139 int main(void) 140 { 141 tst_resm(TINFO, "test is not available on uClinux"); 142 tst_exit(); 143 } 144 145 #endif /* if !defined(UCLINUX) */ 146 147 /* 148 * cleanup() - performs all ONE TIME cleanup for this test at 149 * completion or premature exit. 150 */ 151 void cleanup(void) 152 { 153 if (seteuid(0) == -1) { 154 tst_resm(TWARN, "seteuid failed to " 155 "to set the effective uid to root"); 156 perror("setuid"); 157 } 158 159 } 160