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