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 */ 21 22 #define _GNU_SOURCE 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <unistd.h> 26 27 #include "test.h" 28 #include "ltp_priv.h" 29 #include "old_module.h" 30 31 void tst_module_exists(void (cleanup_fn)(void), 32 const char *mod_name, char **mod_path) 33 { 34 /* check current working directory */ 35 if (access(mod_name, F_OK) == 0) { 36 if (mod_path != NULL) 37 *mod_path = strdup(mod_name); 38 return; 39 } 40 char *buf = NULL; 41 int err = -1; 42 /* check LTP installation path */ 43 const char *ltproot = getenv("LTPROOT"); 44 if (ltproot != NULL) { 45 if (asprintf(&buf, "%s/testcases/bin/%s", 46 ltproot, mod_name) == -1) { 47 tst_brkm(TBROK | TERRNO, cleanup_fn, 48 "asprintf failed at %s:%d", 49 __FILE__, __LINE__); 50 return; 51 } 52 err = access(buf, F_OK); 53 } 54 /* check start working directory */ 55 if (err == -1 && tst_tmpdir_created()) { 56 free(buf); 57 if (asprintf(&buf, "%s/%s", tst_get_startwd(), 58 mod_name) == -1) { 59 tst_brkm(TBROK | TERRNO, cleanup_fn, 60 "asprintf failed at %s:%d", 61 __FILE__, __LINE__); 62 return; 63 } 64 err = access(buf, F_OK); 65 } 66 67 if (err != 0) { 68 free(buf); 69 tst_brkm(TCONF, cleanup_fn, "Failed to find module '%s'", 70 mod_name); 71 return; 72 } 73 74 if (mod_path != NULL) 75 *mod_path = buf; 76 else 77 free(buf); 78 } 79 80 void tst_module_load(void (cleanup_fn)(void), 81 const char *mod_name, char *const argv[]) 82 { 83 char *mod_path = NULL; 84 tst_module_exists(cleanup_fn, mod_name, &mod_path); 85 86 const int offset = 2; /* command name & module path */ 87 int size = 0; 88 while (argv && argv[size]) 89 ++size; 90 size += offset; 91 const char *mod_argv[size + 1]; /* + NULL in the end */ 92 mod_argv[size] = NULL; 93 mod_argv[0] = "insmod"; 94 mod_argv[1] = mod_path; 95 96 int i; 97 for (i = offset; i < size; ++i) 98 mod_argv[i] = argv[i - offset]; 99 100 tst_run_cmd(cleanup_fn, mod_argv, NULL, NULL, 0); 101 free(mod_path); 102 } 103 104 void tst_module_unload(void (cleanup_fn)(void), const char *mod_name) 105 { 106 int i, rc; 107 108 const char *const argv[] = { "rmmod", mod_name, NULL }; 109 110 rc = 1; 111 for (i = 0; i < 50; i++) { 112 rc = tst_run_cmd(NULL, argv, "/dev/null", "/dev/null", 1); 113 if (!rc) 114 break; 115 116 usleep(20000); 117 } 118 119 if (rc) { 120 tst_brkm(TBROK, cleanup_fn, 121 "could not unload %s module", mod_name); 122 } 123 } 124
