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 : munlock02 20 * 21 * EXECUTED BY : root / superuser 22 * 23 * TEST TITLE : Test for checking basic error conditions for 24 * munlock(2) 25 * 26 * TEST CASE TOTAL : 2 27 * 28 * AUTHOR : Nirmala Devi Dhanasekar <nirmala.devi (at) wipro.com> 29 * 30 * SIGNALS 31 * Uses SIGUSR1 to pause before test if option set. 32 * (See the parse_opts(3) man page). 33 * 34 * DESCRIPTION 35 * Check for basic errors returned by munlock(2) system call. 36 * 37 * Verify that munlock(2) returns -1 and sets errno to 38 * 39 * 1) ENOMEM - Some of the specified address range does not correspond to 40 * mapped pages in the address space of the process. 41 * 42 * Setup: 43 * Setup signal handling. 44 * Pause for SIGUSR1 if option specified. 45 * 46 * Test: 47 * Loop if the proper options are given. 48 * Do necessary setup for each test. 49 * Execute system call 50 * Check return code, if system call failed (return=-1) 51 * Log the errno and Issue a FAIL message. 52 * Otherwise, Issue a PASS message. 53 * 54 * Cleanup: 55 * Print errno log and/or timing stats if options given 56 * 57 * USAGE: <for command-line> 58 * munlock02 [-c n] [-e] [-i n] [-I x] [-p x] [-t] 59 * where, -c n : Run n copies concurrently 60 * -e : Turn on errno logging. 61 * -h : Show this help screen 62 * -i n : Execute test n times. 63 * -I x : Execute test for x seconds. 64 * -p : Pause for SIGUSR1 before starting 65 * -P x : Pause for x seconds between iterations. 66 * -t : Turn on syscall timing. 67 * 68 * RESTRICTIONS 69 * Test must run as root. 70 *****************************************************************************/ 71 #include <errno.h> 72 #include <unistd.h> 73 #include <sys/mman.h> 74 #include <pwd.h> 75 #include "test.h" 76 77 void setup(); 78 void cleanup(); 79 80 char *TCID = "munlock02"; 81 int TST_TOTAL = 1; 82 83 #define LEN 1024 84 85 void *addr1; 86 87 struct test_case_t { 88 void *addr; 89 int len; 90 int error; 91 char *edesc; 92 } TC[] = { 93 { 94 NULL, 0, ENOMEM, "address range out of address space"},}; 95 96 #if !defined(UCLINUX) 97 98 int main(int ac, char **av) 99 { 100 int lc, i; 101 102 tst_parse_opts(ac, av, NULL, NULL); 103 104 setup(); 105 106 /* check looping state */ 107 for (lc = 0; TEST_LOOPING(lc); lc++) { 108 109 tst_count = 0; 110 for (i = 0; i < TST_TOTAL; i++) { 111 #ifdef __ia64__ 112 TC[0].len = 8 * getpagesize(); 113 #endif 114 TEST(munlock(TC[i].addr, TC[i].len)); 115 116 /* check return code */ 117 if (TEST_RETURN == -1) { 118 if (TEST_ERRNO != TC[i].error) 119 tst_brkm(TFAIL, cleanup, 120 "munlock() Failed with wrong " 121 "errno, expected errno=%s, " 122 "got errno=%d : %s", 123 TC[i].edesc, TEST_ERRNO, 124 strerror(TEST_ERRNO)); 125 else 126 tst_resm(TPASS, 127 "expected failure - errno " 128 "= %d : %s", 129 TEST_ERRNO, 130 strerror(TEST_ERRNO)); 131 } else { 132 tst_brkm(TFAIL, cleanup, 133 "munlock() Failed, expected " 134 "return value=-1, got %ld", 135 TEST_RETURN); 136 } 137 } 138 } 139 140 /* cleanup and exit */ 141 cleanup(); 142 143 tst_exit(); 144 } 145 146 /* setup() - performs all ONE TIME setup for this test. */ 147 148 void setup(void) 149 { 150 151 char *address; 152 153 tst_sig(FORK, DEF_HANDLER, cleanup); 154 155 TC[0].len = 8 * getpagesize(); 156 address = mmap(0, TC[0].len, PROT_READ | PROT_WRITE, 157 MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); 158 if (address == MAP_FAILED) 159 tst_brkm(TFAIL, cleanup, "mmap_failed"); 160 memset(address, 0x20, TC[0].len); 161 TEST(mlock(address, TC[0].len)); 162 163 /* check return code */ 164 if (TEST_RETURN == -1) { 165 tst_brkm(TFAIL | TTERRNO, cleanup, 166 "mlock(%p, %d) Failed with return=%ld", address, 167 TC[0].len, TEST_RETURN); 168 } 169 TC[0].addr = address; 170 /* 171 * unmap part of the area, to create the condition for ENOMEM 172 */ 173 address += 2 * getpagesize(); 174 munmap(address, 4 * getpagesize()); 175 176 TEST_PAUSE; 177 178 return; 179 } 180 181 #else 182 183 int main(void) 184 { 185 tst_resm(TINFO, "test is not available on uClinux"); 186 tst_exit(); 187 } 188 189 #endif /* if !defined(UCLINUX) */ 190 191 /* 192 * cleanup() - performs all ONE TIME cleanup for this test at 193 * completion or premature exit. 194 */ 195 void cleanup(void) 196 { 197 return; 198 } 199
