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/*
* kmod - one tool to rule them all
*
* 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 <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <shared/util.h>
#include <libkmod/libkmod.h>
#include "kmod.h"
static const char options_s[] = "+hV";
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{}
};
static const struct kmod_cmd kmod_cmd_help;
static const struct kmod_cmd *kmod_cmds[] = {
&kmod_cmd_help,
&kmod_cmd_list,
&kmod_cmd_static_nodes,
};
static const struct kmod_cmd *kmod_compat_cmds[] = {
&kmod_cmd_compat_lsmod,
&kmod_cmd_compat_rmmod,
&kmod_cmd_compat_insmod,
&kmod_cmd_compat_modinfo,
&kmod_cmd_compat_modprobe,
&kmod_cmd_compat_depmod,
};
static int kmod_help(int argc, char *argv[])
{
size_t i;
printf("kmod - Manage kernel modules: list, load, unload, etc\n"
"Usage:\n"
"\t%s [options] command [command_options]\n\n"
"Options:\n"
"\t-V, --version show version\n"
"\t-h, --help show this help\n\n"
"Commands:\n", basename(argv[0]));
for (i = 0; i < ARRAY_SIZE(kmod_cmds); i++) {
if (kmod_cmds[i]->help != NULL) {
printf(" %-12s %s\n", kmod_cmds[i]->name,
kmod_cmds[i]->help);
}
}
puts("\nkmod also handles gracefully if called from following symlinks:");
for (i = 0; i < ARRAY_SIZE(kmod_compat_cmds); i++) {
if (kmod_compat_cmds[i]->help != NULL) {
printf(" %-12s %s\n", kmod_compat_cmds[i]->name,
kmod_compat_cmds[i]->help);
}
}
return EXIT_SUCCESS;
}
static const struct kmod_cmd kmod_cmd_help = {
.name = "help",
.cmd = kmod_help,
.help = "Show help message",
};
static int handle_kmod_commands(int argc, char *argv[])
{
const char *cmd;
int err = 0;
size_t i;
for (;;) {
int c;
c = getopt_long(argc, argv, options_s, options, NULL);
if (c == -1)
break;
switch (c) {
case 'h':
kmod_help(argc, argv);
return EXIT_SUCCESS;
case 'V':
puts(PACKAGE " version " VERSION);
puts(KMOD_FEATURES);
return EXIT_SUCCESS;
case '?':
return EXIT_FAILURE;
default:
fprintf(stderr, "Error: unexpected getopt_long() value '%c'.\n", c);
return EXIT_FAILURE;
}
}
if (optind >= argc) {
fputs("missing command\n", stderr);
goto fail;
}
cmd = argv[optind];
for (i = 0, err = -EINVAL; i < ARRAY_SIZE(kmod_cmds); i++) {
if (streq(kmod_cmds[i]->name, cmd)) {
err = kmod_cmds[i]->cmd(--argc, ++argv);
break;
}
}
if (err < 0) {
fprintf(stderr, "invalid command '%s'\n", cmd);
goto fail;
}
return err;
fail:
kmod_help(argc, argv);
return EXIT_FAILURE;
}
static int handle_kmod_compat_commands(int argc, char *argv[])
{
const char *cmd;
size_t i;
cmd = basename(argv[0]);
for (i = 0; i < ARRAY_SIZE(kmod_compat_cmds); i++) {
if (streq(kmod_compat_cmds[i]->name, cmd))
return kmod_compat_cmds[i]->cmd(argc, argv);
}
return -ENOENT;
}
int main(int argc, char *argv[])
{
int err;
if (streq(program_invocation_short_name, "kmod"))
err = handle_kmod_commands(argc, argv);
else
err = handle_kmod_compat_commands(argc, argv);
return err;
}
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