query_module02.c revision 354ebb48db8e66a853a58379a4808d5dcd1ceac3
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 : query_module02 20 * 21 * EXECUTED BY : anyone 22 * 23 * TEST TITLE : Checking error conditions for query_module(2) 24 * 25 * TEST CASE TOTAL : 5 26 * 27 * AUTHOR : Madhu T L <madhu.tarikere@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. query_module(2) returns -1 and sets errno to ENOENT for non-existing 36 * module. 37 * 2. query_module(2) returns -1 and sets errno to EINVAL for invalid 38 * which argument. 39 * 3. query_module(2) returns -1 and sets errno to EINVAL for NULL 40 * module name and valid which argument. 41 * 4. query_module(2) returns -1 and sets errno to EINVAL, if module 42 * name parameter is null terminated (zero length) string. 43 * 5. query_module(2) returns -1 and sets errno to ENAMETOOLONG for long 44 * module name. 45 * 46 * Setup: 47 * Setup signal handling. 48 * Initialize long module name 49 * Set expected errnos for logging 50 * Pause for SIGUSR1 if option specified. 51 * 52 * Test: 53 * Loop if the proper options are given. 54 * Execute system call 55 * Check return code and error number, if matching, 56 * Issue PASS message 57 * Otherwise, 58 * Issue FAIL message 59 * 60 * Cleanup: 61 * Print errno log and/or timing stats if options given 62 * 63 * USAGE: <for command-line> 64 * query_module02 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t] 65 * where, -c n : Run n copies concurrently. 66 * -e : Turn on errno logging. 67 * -f : Turn off functional testing 68 * -h : Show help screen 69 * -i n : Execute test n times. 70 * -I x : Execute test for x seconds. 71 * -p : Pause for SIGUSR1 before starting 72 * -P x : Pause for x seconds between iterations. 73 * -t : Turn on syscall timing. 74 * 75 ****************************************************************/ 76 77#include <errno.h> 78#include <pwd.h> 79#include <sys/types.h> 80#include <unistd.h> 81#include <limits.h> 82#include <asm/atomic.h> 83#include <linux/module.h> 84#include "test.h" 85#include "usctest.h" 86 87#ifndef PAGE_SIZE 88#define PAGE_SIZE sysconf(_SC_PAGE_SIZE) 89#endif 90 91#define NULLMODNAME "" 92#define LONGMODNAMECHAR 'm' /* Arbitrarily selected */ 93#define MODNAMEMAX (PAGE_SIZE + 1) 94#define EXP_RET_VAL -1 95#define QM_INVALID (QM_INFO + 100) 96 97struct test_case_t { /* test case structure */ 98 char *modname; 99 int which; 100 void *buf; 101 size_t bufsize; 102 int experrno; /* expected errno */ 103 char *desc; 104}; 105 106char *TCID = "query_module02"; 107static int exp_enos[] = { ENOENT, EINVAL, ENAMETOOLONG, 0 }; 108 109static char longmodname[MODNAMEMAX]; 110static int testno; 111static char out_buf[PAGE_SIZE]; 112static size_t ret_size; 113 114static void setup(void); 115static void cleanup(void); 116 117static struct test_case_t tdat[] = { 118 119 {"dummy_mod", QM_REFS, (void *)out_buf, sizeof(out_buf), ENOENT, 120 "results for non-existing module"} 121 , 122 123 {NULL, QM_INVALID, (void *)out_buf, sizeof(out_buf), EINVAL, 124 "results for invalid which argument"} 125 , 126 127 {NULL, QM_REFS, (void *)out_buf, sizeof(out_buf), EINVAL, 128 "results for NULL module name and valid which argument"} 129 , 130 131 {NULLMODNAME, QM_REFS, (void *)out_buf, sizeof(out_buf), EINVAL, 132 "results for null terminated (zero lenght) module name"} 133 , 134 135 {longmodname, QM_REFS, (void *)out_buf, sizeof(out_buf), ENAMETOOLONG, 136 "results for long module name"} 137 , 138}; 139 140int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); 141 142int main(int argc, char **argv) 143{ 144 int lc; 145 char *msg; 146 147 if ((msg = parse_opts(argc, argv, NULL, NULL)) != (char *)NULL) { 148 tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); 149 } 150 151 setup(); 152 153 for (lc = 0; TEST_LOOPING(lc); lc++) { 154 /* reset Tst_count in case we are looping */ 155 Tst_count = 0; 156 157 for (testno = 0; testno < TST_TOTAL; ++testno) { 158 159 TEST(query_module(tdat[testno].modname, 160 tdat[testno].which, tdat[testno].buf, 161 tdat[testno].bufsize, &ret_size)); 162 TEST_ERROR_LOG(TEST_ERRNO); 163 if ((TEST_RETURN == EXP_RET_VAL) && 164 (TEST_ERRNO == tdat[testno].experrno)) { 165 tst_resm(TPASS, "Expected %s, errno: %d", 166 tdat[testno].desc, TEST_ERRNO); 167 } else { 168 tst_resm(TFAIL, "Unexpected %s ; returned" 169 " %d (expected %d), errno %d (expected" 170 " %d)", tdat[testno].desc, 171 TEST_RETURN, EXP_RET_VAL, 172 TEST_ERRNO, tdat[testno].experrno); 173 } 174 } 175 } 176 cleanup(); 177 178 tst_exit(); 179} 180 181/* 182 * setup() 183 * performs all ONE TIME setup for this test 184 */ 185void setup(void) 186{ 187 188 tst_sig(FORK, DEF_HANDLER, cleanup); 189 190 if (tst_kvercmp(2, 5, 48) >= 0) 191 tst_brkm(TCONF, NULL, "This test will not work on " 192 "kernels after 2.5.48"); 193 194 /* Initialize longmodname to LONGMODNAMECHAR character */ 195 memset(longmodname, LONGMODNAMECHAR, MODNAMEMAX - 1); 196 197 /* set the expected errnos... */ 198 TEST_EXP_ENOS(exp_enos); 199 200 /* Pause if that option was specified 201 * TEST_PAUSE contains the code to fork the test with the -c option. 202 */ 203 TEST_PAUSE; 204} 205 206/* 207 * cleanup() 208 * performs all ONE TIME cleanup for this test at 209 * completion or premature exit 210 */ 211void cleanup(void) 212{ 213 /* 214 * print timing stats if that option was specified. 215 * print errno log if that option was specified. 216 */ 217 TEST_CLEANUP; 218 219} 220