/*
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* kmod-lsmod - list modules from linux kernel using libkmod.
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*
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* Copyright (C) 2011-2013 ProFUSION embedded systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libkmod/libkmod.h>
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#include "kmod.h"
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static int do_lsmod(int argc, char *argv[])
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{
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struct kmod_ctx *ctx;
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const char *null_config = NULL;
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struct kmod_list *list, *itr;
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int err;
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if (argc != 1) {
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fprintf(stderr, "Usage: %s\n", argv[0]);
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return EXIT_FAILURE;
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}
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ctx = kmod_new(NULL, &null_config);
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if (ctx == NULL) {
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fputs("Error: kmod_new() failed!\n", stderr);
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return EXIT_FAILURE;
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}
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err = kmod_module_new_from_loaded(ctx, &list);
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if (err < 0) {
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fprintf(stderr, "Error: could not get list of modules: %s\n",
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strerror(-err));
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kmod_unref(ctx);
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return EXIT_FAILURE;
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}
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puts("Module Size Used by");
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kmod_list_foreach(itr, list) {
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struct kmod_module *mod = kmod_module_get_module(itr);
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const char *name = kmod_module_get_name(mod);
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int use_count = kmod_module_get_refcnt(mod);
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long size = kmod_module_get_size(mod);
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struct kmod_list *holders, *hitr;
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int first = 1;
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printf("%-19s %8ld %d", name, size, use_count);
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holders = kmod_module_get_holders(mod);
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kmod_list_foreach(hitr, holders) {
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struct kmod_module *hm = kmod_module_get_module(hitr);
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if (!first) {
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putchar(',');
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} else {
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putchar(' ');
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first = 0;
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}
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fputs(kmod_module_get_name(hm), stdout);
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kmod_module_unref(hm);
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}
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putchar('\n');
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kmod_module_unref_list(holders);
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kmod_module_unref(mod);
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}
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kmod_module_unref_list(list);
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kmod_unref(ctx);
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return EXIT_SUCCESS;
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}
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const struct kmod_cmd kmod_cmd_compat_lsmod = {
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.name = "lsmod",
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.cmd = do_lsmod,
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.help = "compat lsmod command",
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};
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const struct kmod_cmd kmod_cmd_list = {
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.name = "list",
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.cmd = do_lsmod,
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.help = "list currently loaded modules",
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};
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