1 /* 2 * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 * 18 * Author: Alexey Kodanev <alexey.kodanev (at) oracle.com> 19 * 20 * Test checks block device kernel API. 21 */ 22 23 #define _GNU_SOURCE 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <unistd.h> 27 #include <string.h> 28 29 #include "test.h" 30 #include "safe_macros.h" 31 #include "old_module.h" 32 33 char *TCID = "block_dev"; 34 int TST_TOTAL = 9; 35 36 static const char module_name[] = "ltp_block_dev.ko"; 37 static const char dev_result[] = "/sys/devices/ltp_block_dev/result"; 38 static const char dev_tcase[] = "/sys/devices/ltp_block_dev/tcase"; 39 static int module_loaded; 40 41 static int run_all_testcases; 42 static const option_t options[] = { 43 {"a", &run_all_testcases, NULL}, 44 {NULL, NULL, NULL} 45 }; 46 47 static void cleanup(void) 48 { 49 if (module_loaded) 50 tst_module_unload(NULL, module_name); 51 } 52 53 static void help(void) 54 { 55 printf(" -a Run all test-cases (can crash the kernel)\n"); 56 } 57 58 void setup(int argc, char *argv[]) 59 { 60 tst_parse_opts(argc, argv, options, help); 61 62 tst_require_root(); 63 64 if (tst_kvercmp(2, 6, 0) < 0) { 65 tst_brkm(TCONF, NULL, 66 "Test must be run with kernel 2.6 or newer"); 67 } 68 69 tst_sig(FORK, DEF_HANDLER, cleanup); 70 } 71 72 static void test_run(void) 73 { 74 int off = 0; 75 /* 76 * test-cases #8 and #9 can crash the kernel. 77 * We have to wait for kernel fix where register_blkdev() & 78 * unregister_blkdev() checks the input device name parameter 79 * against NULL pointer. 80 */ 81 if (!run_all_testcases) 82 off = 2; 83 84 tst_module_load(cleanup, module_name, NULL); 85 module_loaded = 1; 86 87 int i, pass = 0; 88 for (i = 0; i < TST_TOTAL - off; ++i) { 89 SAFE_FILE_PRINTF(cleanup, dev_tcase, "%d", i + 1); 90 SAFE_FILE_SCANF(cleanup, dev_result, "%d", &pass); 91 tst_resm((pass) ? TPASS : TFAIL, "Test-case '%d'", i + 1); 92 } 93 } 94 95 int main(int argc, char *argv[]) 96 { 97 setup(argc, argv); 98 99 test_run(); 100 101 cleanup(); 102 103 tst_exit(); 104 } 105
