1 /* 2 * kmod-lsmod - list modules from linux kernel using libkmod. 3 * 4 * Copyright (C) 2011-2013 ProFUSION embedded systems 5 * 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include <errno.h> 21 #include <stddef.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <unistd.h> 26 27 #include <libkmod/libkmod.h> 28 29 #include "kmod.h" 30 31 static int do_lsmod(int argc, char *argv[]) 32 { 33 struct kmod_ctx *ctx; 34 const char *null_config = NULL; 35 struct kmod_list *list, *itr; 36 int err; 37 38 if (argc != 1) { 39 fprintf(stderr, "Usage: %s\n", argv[0]); 40 return EXIT_FAILURE; 41 } 42 43 ctx = kmod_new(NULL, &null_config); 44 if (ctx == NULL) { 45 fputs("Error: kmod_new() failed!\n", stderr); 46 return EXIT_FAILURE; 47 } 48 49 err = kmod_module_new_from_loaded(ctx, &list); 50 if (err < 0) { 51 fprintf(stderr, "Error: could not get list of modules: %s\n", 52 strerror(-err)); 53 kmod_unref(ctx); 54 return EXIT_FAILURE; 55 } 56 57 puts("Module Size Used by"); 58 59 kmod_list_foreach(itr, list) { 60 struct kmod_module *mod = kmod_module_get_module(itr); 61 const char *name = kmod_module_get_name(mod); 62 int use_count = kmod_module_get_refcnt(mod); 63 long size = kmod_module_get_size(mod); 64 struct kmod_list *holders, *hitr; 65 int first = 1; 66 67 printf("%-19s %8ld %d", name, size, use_count); 68 holders = kmod_module_get_holders(mod); 69 kmod_list_foreach(hitr, holders) { 70 struct kmod_module *hm = kmod_module_get_module(hitr); 71 72 if (!first) { 73 putchar(','); 74 } else { 75 putchar(' '); 76 first = 0; 77 } 78 79 fputs(kmod_module_get_name(hm), stdout); 80 kmod_module_unref(hm); 81 } 82 putchar('\n'); 83 kmod_module_unref_list(holders); 84 kmod_module_unref(mod); 85 } 86 kmod_module_unref_list(list); 87 kmod_unref(ctx); 88 89 return EXIT_SUCCESS; 90 } 91 92 const struct kmod_cmd kmod_cmd_compat_lsmod = { 93 .name = "lsmod", 94 .cmd = do_lsmod, 95 .help = "compat lsmod command", 96 }; 97 98 const struct kmod_cmd kmod_cmd_list = { 99 .name = "list", 100 .cmd = do_lsmod, 101 .help = "list currently loaded modules", 102 }; 103
