diff options
Diffstat (limited to 'tools/insmod.c')
-rw-r--r-- | tools/insmod.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/tools/insmod.c b/tools/insmod.c new file mode 100644 index 0000000..c422971 --- /dev/null +++ b/tools/insmod.c @@ -0,0 +1,166 @@ +/* + * kmod-insmod - insert modules into 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 <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 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(void) +{ + printf("Usage:\n" + "\t%s [options] filename [args]\n" + "Options:\n" + "\t-V, --version show version\n" + "\t-h, --help show this help\n", + program_invocation_short_name); +} + +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; + unsigned int flags = 0; + + for (;;) { + int c, idx = 0; + c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); + if (c == -1) + break; + switch (c) { + case 'p': + case 's': + /* ignored, for compatibility only */ + break; + case 'f': + flags |= KMOD_PROBE_FORCE_MODVERSION; + flags |= KMOD_PROBE_FORCE_VERMAGIC; + break; + case 'h': + help(); + return EXIT_SUCCESS; + case 'V': + puts(PACKAGE " version " VERSION); + puts(KMOD_FEATURES); + return EXIT_SUCCESS; + case '?': + return EXIT_FAILURE; + default: + ERR("unexpected getopt_long() value '%c'.\n", + c); + return EXIT_FAILURE; + } + } + + if (optind >= argc) { + ERR("missing filename.\n"); + return EXIT_FAILURE; + } + + filename = argv[optind]; + if (streq(filename, "-")) { + ERR("this tool does not support loading from stdin!\n"); + 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) { + ERR("out of memory\n"); + 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) { + ERR("kmod_new() failed!\n"); + free(opts); + return EXIT_FAILURE; + } + + err = kmod_module_new_from_path(ctx, filename, &mod); + if (err < 0) { + ERR("could not load module %s: %s\n", filename, + strerror(-err)); + goto end; + } + + err = kmod_module_insert_module(mod, flags, opts); + if (err < 0) { + ERR("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; +} + +const struct kmod_cmd kmod_cmd_compat_insmod = { + .name = "insmod", + .cmd = do_insmod, + .help = "compat insmod command", +}; |