blob: 4eb81103089be80425b03f31cff655acb4047a2b [file] [log] [blame]
/*
* kmod-insmod - insert modules into linux kernel using libkmod.
*
* Copyright (C) 2011-2012 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 <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <errno.h>
#include <string.h>
#include "libkmod.h"
static const char cmdopts_s[] = "psfVh";
static const struct option cmdopts[] = {
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{NULL, 0, 0, 0}
};
static void help(const char *progname)
{
fprintf(stderr,
"Usage:\n"
"\t%s [options] filename [args]\n"
"Options:\n"
"\t-V, --version show version\n"
"\t-h, --help show this help\n",
progname);
}
static const char *mod_strerror(int err)
{
switch (err) {
case ENOEXEC:
return "Invalid module format";
case ENOENT:
return "Unknown symbol in module";
case ESRCH:
return "Module has wrong symbol version";
case EINVAL:
return "Invalid parameters";
default:
return strerror(err);
}
}
static int do_insmod(int argc, char *argv[])
{
struct kmod_ctx *ctx;
struct kmod_module *mod;
const char *filename;
char *opts = NULL;
size_t optslen = 0;
int i, err;
const char *null_config = NULL;
for (;;) {
int c, idx = 0;
c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx);
if (c == -1)
break;
switch (c) {
case 'p':
case 's':
case 'f':
/* ignored, for compatibility only */
break;
case 'h':
help(basename(argv[0]));
return EXIT_SUCCESS;
case 'V':
puts(PACKAGE " version " VERSION);
return EXIT_SUCCESS;
case '?':
return EXIT_FAILURE;
default:
fprintf(stderr,
"Error: unexpected getopt_long() value '%c'.\n",
c);
return EXIT_FAILURE;
}
}
if (optind >= argc) {
fprintf(stderr, "Error: missing filename.\n");
return EXIT_FAILURE;
}
filename = argv[optind];
if (strcmp(filename, "-") == 0) {
fputs("Error: this tool does not support loading from stdin!\n",
stderr);
return EXIT_FAILURE;
}
for (i = optind + 1; i < argc; i++) {
size_t len = strlen(argv[i]);
void *tmp = realloc(opts, optslen + len + 2);
if (tmp == NULL) {
fputs("Error: out of memory\n", stderr);
free(opts);
return EXIT_FAILURE;
}
opts = tmp;
if (optslen > 0) {
opts[optslen] = ' ';
optslen++;
}
memcpy(opts + optslen, argv[i], len);
optslen += len;
opts[optslen] = '\0';
}
ctx = kmod_new(NULL, &null_config);
if (!ctx) {
fputs("Error: kmod_new() failed!\n", stderr);
free(opts);
return EXIT_FAILURE;
}
err = kmod_module_new_from_path(ctx, filename, &mod);
if (err < 0) {
fprintf(stderr, "Error: could not load module %s: %s\n",
filename, strerror(-err));
goto end;
}
err = kmod_module_insert_module(mod, 0, opts);
if (err < 0) {
fprintf(stderr, "Error: could not insert module %s: %s\n",
filename, mod_strerror(-err));
}
kmod_module_unref(mod);
end:
kmod_unref(ctx);
free(opts);
return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
#include "kmod.h"
const struct kmod_cmd kmod_cmd_compat_insmod = {
.name = "insmod",
.cmd = do_insmod,
.help = "compat insmod command",
};