1 /* 2 * kmod-insert - insert a module into the kernel. 3 * 4 * Copyright (C) 2015 Intel Corporation. All rights reserved. 5 * Copyright (C) 2011-2013 ProFUSION embedded systems 6 * 7 * This program is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation, either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include <errno.h> 22 #include <getopt.h> 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include <libkmod/libkmod.h> 27 28 #include "kmod.h" 29 30 static const char cmdopts_s[] = "h"; 31 static const struct option cmdopts[] = { 32 {"help", no_argument, 0, 'h'}, 33 { } 34 }; 35 36 static void help(void) 37 { 38 printf("Usage:\n" 39 "\t%s insert [options] module\n" 40 "Options:\n" 41 "\t-h, --help show this help\n", 42 program_invocation_short_name); 43 } 44 45 static const char *mod_strerror(int err) 46 { 47 switch (err) { 48 case KMOD_PROBE_APPLY_BLACKLIST: 49 return "Module is blacklisted"; 50 case -EEXIST: 51 return "Module already in kernel"; 52 case -ENOENT: 53 return "Unknown symbol in module or unknown parameter (see dmesg)"; 54 default: 55 return strerror(-err); 56 } 57 } 58 59 static int do_insert(int argc, char *argv[]) 60 { 61 struct kmod_ctx *ctx; 62 struct kmod_list *list = NULL, *l; 63 const char *name; 64 int err, r = EXIT_SUCCESS; 65 66 for (;;) { 67 int c, idx = 0; 68 c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); 69 if (c == -1) 70 break; 71 switch (c) { 72 case 'h': 73 help(); 74 return EXIT_SUCCESS; 75 default: 76 ERR("Unexpected getopt_long() value '%c'.\n", c); 77 return EXIT_FAILURE; 78 } 79 } 80 81 if (optind >= argc) { 82 ERR("Missing module name\n"); 83 return EXIT_FAILURE; 84 } 85 86 ctx = kmod_new(NULL, NULL); 87 if (!ctx) { 88 ERR("kmod_new() failed!\n"); 89 return EXIT_FAILURE; 90 } 91 92 name = argv[optind]; 93 err = kmod_module_new_from_lookup(ctx, name, &list); 94 if (err < 0) { 95 ERR("Could not lookup module matching '%s': %s\n", name, strerror(-err)); 96 r = EXIT_FAILURE; 97 goto end; 98 } 99 100 if (list == NULL) { 101 ERR("No module matches '%s'\n", name); 102 r = EXIT_FAILURE; 103 goto end; 104 } 105 106 kmod_list_foreach(l, list) { 107 struct kmod_module *mod = kmod_module_get_module(l); 108 109 err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL); 110 if (err != 0) { 111 r = EXIT_FAILURE; 112 ERR("Could not insert '%s': %s\n", kmod_module_get_name(mod), mod_strerror(err)); 113 } 114 115 kmod_module_unref(mod); 116 } 117 118 kmod_module_unref_list(list); 119 end: 120 kmod_unref(ctx); 121 return r; 122 } 123 124 const struct kmod_cmd kmod_cmd_insert = { 125 .name = "insert", 126 .cmd = do_insert, 127 .help = "insert a module into the kernel", 128 }; 129
