1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * NAME 22 * sysctl05.c 23 * 24 * DESCRIPTION 25 * Testcase to check that sysctl(2) sets errno to EFAULT 26 * 27 * ALGORITHM 28 * 1. Call sysctl(2) with the address of sc_oldname outside the address 29 * space of the process, and expect EFAULT. 30 * 2. Call sysctl(2) with the address of sc_oldval outside the address 31 * space of the process, and expect EFAULT. 32 * 33 * USAGE: <for command-line> 34 * sysctl05 [-c n] [-e] [-i n] [-I x] [-P x] [-t] 35 * where, -c n : Run n copies concurrently. 36 * -e : Turn on errno logging. 37 * -i n : Execute test n times. 38 * -I x : Execute test for x seconds. 39 * -P x : Pause for x seconds between iterations. 40 * -t : Turn on syscall timing. 41 * 42 * HISTORY 43 * 07/2001 Ported by Wayne Boyer 44 * 45 * RESTRICTIONS 46 * None 47 */ 48 49 #include "test.h" 50 #include <stdio.h> 51 #include <unistd.h> 52 #include <linux/unistd.h> 53 #include <linux/sysctl.h> 54 #include <linux/version.h> 55 #include <errno.h> 56 57 char *TCID = "sysctl05"; 58 59 /* This is an older/deprecated syscall that newer arches are omitting */ 60 #ifdef __NR_sysctl 61 62 int TST_TOTAL = 2; 63 64 int sysctl(int *name, int nlen, void *oldval, size_t * oldlenp, 65 void *newval, size_t newlen) 66 { 67 struct __sysctl_args args = 68 { name, nlen, oldval, oldlenp, newval, newlen }; 69 return syscall(__NR__sysctl, &args); 70 } 71 72 char osname[BUFSIZ]; 73 size_t osnamelth; 74 75 void setup(void); 76 void cleanup(void); 77 78 struct testcases { 79 char *desc; 80 int name[2]; 81 int size; 82 void *oldval; 83 size_t *oldlen; 84 void *newval; 85 int newlen; 86 int (*cleanup) (); 87 int exp_retval; 88 int exp_errno; 89 } testcases[] = { 90 { 91 "Test for EFAULT: invalid oldlen", { 92 CTL_KERN, KERN_OSRELEASE}, 93 2, osname, (void *)-1, NULL, 0, NULL, -1, EFAULT}, { 94 "Test for EFAULT: invalid oldval", { 95 CTL_KERN, KERN_VERSION}, 96 2, (void *)-1, &osnamelth, NULL, 0, NULL, -1, EFAULT} 97 }; 98 99 #if !defined(UCLINUX) 100 101 int main(int ac, char **av) 102 { 103 int lc; 104 int i; 105 int ret = 0; 106 107 tst_parse_opts(ac, av, NULL, NULL); 108 109 setup(); 110 111 for (lc = 0; TEST_LOOPING(lc); lc++) { 112 113 /* reset tst_count in case we are looping */ 114 tst_count = 0; 115 116 for (i = 0; i < TST_TOTAL; ++i) { 117 118 osnamelth = sizeof(osname); 119 120 TEST(sysctl(testcases[i].name, testcases[i].size, 121 testcases[i].oldval, testcases[i].oldlen, 122 testcases[i].newval, testcases[i].newlen)); 123 124 if (TEST_RETURN != testcases[i].exp_retval) { 125 tst_resm(TFAIL, "sysctl(2) returned unexpected " 126 "retval, expected: %d, got: %d", 127 testcases[i].exp_retval, ret); 128 continue; 129 } 130 131 if (TEST_ERRNO == ENOSYS) { 132 tst_resm(TCONF, 133 "You may need to make CONFIG_SYSCTL_SYSCALL=y" 134 " to your kernel config."); 135 } else if (TEST_ERRNO != testcases[i].exp_errno) { 136 tst_resm(TFAIL, "sysctl(2) returned unexpected " 137 "errno, expected: %d, got: %d", 138 testcases[i].exp_errno, errno); 139 } else { 140 tst_resm(TPASS, "sysctl(2) set errno correctly " 141 "to %d", testcases[i].exp_errno); 142 } 143 144 if (testcases[i].cleanup) { 145 (void)testcases[i].cleanup(); 146 } 147 } 148 } 149 cleanup(); 150 151 tst_exit(); 152 } 153 154 #else 155 156 int main(void) 157 { 158 tst_resm(TINFO, "test is not available on uClinux"); 159 tst_exit(); 160 } 161 162 #endif /* if !defined(UCLINUX) */ 163 164 /* 165 * setup() - performs all ONE TIME setup for this test. 166 */ 167 void setup(void) 168 { 169 170 tst_sig(NOFORK, DEF_HANDLER, cleanup); 171 172 TEST_PAUSE; 173 } 174 175 /* 176 * cleanup() - performs all ONE TIME cleanup for this test at 177 * completion or premature exit. 178 */ 179 void cleanup(void) 180 { 181 182 } 183 184 #else 185 int TST_TOTAL = 0; 186 187 int main(void) 188 { 189 190 tst_brkm(TCONF, NULL, 191 "This test needs a kernel that has sysctl syscall."); 192 } 193 #endif 194
