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 } 51 err = access(buf, F_OK); 52 } 53 /* check start working directory */ 54 if (err == -1 && tst_tmpdir_created()) { 55 free(buf); 56 if (asprintf(&buf, "%s/%s", tst_get_startwd(), 57 mod_name) == -1) { 58 tst_brkm(TBROK | TERRNO, cleanup_fn, 59 "asprintf failed at %s:%d", 60 __FILE__, __LINE__); 61 } 62 err = access(buf, F_OK); 63 } 64 65 if (err != 0) { 66 free(buf); 67 tst_brkm(TCONF, cleanup_fn, "Failed to find module '%s'", 68 mod_name); 69 } 70 71 if (mod_path != NULL) 72 *mod_path = buf; 73 else 74 free(buf); 75 } 76 77 void tst_module_load(void (cleanup_fn)(void), 78 const char *mod_name, char *const argv[]) 79 { 80 char *mod_path = NULL; 81 tst_module_exists(cleanup_fn, mod_name, &mod_path); 82 83 const int offset = 2; /* command name & module path */ 84 int size = 0; 85 while (argv && argv[size]) 86 ++size; 87 size += offset; 88 const char *mod_argv[size + 1]; /* + NULL in the end */ 89 mod_argv[size] = NULL; 90 mod_argv[0] = "insmod"; 91 mod_argv[1] = mod_path; 92 93 int i; 94 for (i = offset; i < size; ++i) 95 mod_argv[i] = argv[i - offset]; 96 97 tst_run_cmd(cleanup_fn, mod_argv, NULL, NULL, 0); 98 free(mod_path); 99 } 100 101 void tst_module_unload(void (cleanup_fn)(void), const char *mod_name) 102 { 103 int i, rc; 104 105 const char *const argv[] = { "rmmod", mod_name, NULL }; 106 107 rc = 1; 108 for (i = 0; i < 50; i++) { 109 rc = tst_run_cmd(NULL, argv, "/dev/null", "/dev/null", 1); 110 if (!rc) 111 break; 112 113 usleep(20000); 114 } 115 116 if (rc) { 117 tst_brkm(TBROK, cleanup_fn, 118 "could not unload %s module", mod_name); 119 } 120 } 121
