LXR busybox/modutils/insmod.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * Mini insmod implementation for busybox
   4 *
   5 * Copyright (C) 2008 Timo Teras <timo.teras@iki.fi>
   6 *
   7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8 */
   9//config:config INSMOD
  10//config:       bool "insmod (22 kb)"
  11//config:       default y
  12//config:       select PLATFORM_LINUX
  13//config:       help
  14//config:       insmod is used to load specified modules in the running kernel.
  15
  16//applet:IF_INSMOD(IF_NOT_MODPROBE_SMALL(APPLET_NOEXEC(insmod, insmod, BB_DIR_SBIN, BB_SUID_DROP, insmod)))
  17
  18//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
  19//kbuild:lib-$(CONFIG_INSMOD) += insmod.o modutils.o
  20//kbuild:endif
  21
  22#include "libbb.h"
  23#include "modutils.h"
  24
  25/* 2.6 style insmod has no options and required filename
  26 * (not module name - .ko can't be omitted) */
  27
  28//usage:#if !ENABLE_MODPROBE_SMALL
  29//usage:#define insmod_trivial_usage
  30//usage:        IF_FEATURE_2_4_MODULES("[OPTIONS] MODULE")
  31//usage:        IF_NOT_FEATURE_2_4_MODULES("FILE")
  32//usage:        IF_FEATURE_CMDLINE_MODULE_OPTIONS(" [SYMBOL=VALUE]...")
  33//usage:#define insmod_full_usage "\n\n"
  34//usage:       "Load kernel module"
  35//usage:        IF_FEATURE_2_4_MODULES( "\n"
  36//usage:     "\n        -f      Force module to load into the wrong kernel version"
  37//usage:     "\n        -k      Make module autoclean-able"
  38//usage:     "\n        -v      Verbose"
  39//usage:     "\n        -q      Quiet"
  40//usage:     "\n        -L      Lock: prevent simultaneous loads"
  41//usage:        IF_FEATURE_INSMOD_LOAD_MAP(
  42//usage:     "\n        -m      Output load map to stdout"
  43//usage:        )
  44//usage:     "\n        -x      Don't export externs"
  45//usage:        )
  46//usage:#endif
  47
  48int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  49int insmod_main(int argc UNUSED_PARAM, char **argv)
  50{
  51        char *filename;
  52        int rc;
  53
  54        /* Compat note:
  55         * 2.6 style insmod has no options and required filename
  56         * (not module name - .ko can't be omitted).
  57         * 2.4 style insmod can take module name without .o
  58         * and performs module search in default directories
  59         * or in $MODPATH.
  60         */
  61
  62        IF_FEATURE_2_4_MODULES(
  63                getopt32(argv, INSMOD_OPTS INSMOD_ARGS);
  64                argv += optind - 1;
  65        );
  66
  67        filename = *++argv;
  68        if (!filename)
  69                bb_show_usage();
  70
  71        rc = bb_init_module(filename, parse_cmdline_module_options(argv, /*quote_spaces:*/ 0));
  72        if (rc)
  73                bb_error_msg("can't insert '%s': %s", filename, moderror(rc));
  74
  75        return rc;
  76}
  77