1 /* vi: set sw=4 ts=4: */
3 * Mini rmmod implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 * Copyright (C) 2008 Timo Teras <timo.teras@iki.fi>
8 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 //config: bool "rmmod (3.6 kb)"
13 //config: select PLATFORM_LINUX
15 //config: rmmod is used to unload specified modules from the kernel.
17 //applet:IF_RMMOD(IF_NOT_MODPROBE_SMALL(APPLET(rmmod, BB_DIR_SBIN, BB_SUID_DROP)))
19 //kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
20 //kbuild:lib-$(CONFIG_RMMOD) += rmmod.o modutils.o
23 //usage:#if !ENABLE_MODPROBE_SMALL
24 //usage:#define rmmod_trivial_usage
25 //usage: "[-wfa] [MODULE]..."
26 //usage:#define rmmod_full_usage "\n\n"
27 //usage: "Unload kernel modules\n"
28 //usage: "\n -w Wait until the module is no longer used"
29 //usage: "\n -f Force unload"
30 //usage: "\n -a Remove all unused modules (recursively)"
31 //usage:#define rmmod_example_usage
32 //usage: "$ rmmod tulip\n"
38 int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
39 int rmmod_main(int argc UNUSED_PARAM, char **argv)
42 unsigned flags = O_NONBLOCK | O_EXCL;
44 /* Parse command line. */
45 n = getopt32(argv, "wfas"); // -s ignored
52 /* Unload _all_ unused modules via NULL delete_module() call */
53 err = bb_delete_module(NULL, flags);
54 if (err && err != EFAULT)
55 bb_perror_msg_and_die("rmmod");
62 n = ENABLE_FEATURE_2_4_MODULES && get_linux_version_code() < KERNEL_VERSION(2,6,0);
64 char modname[MODULE_NAME_LEN];
67 bname = bb_basename(*argv++);
69 safe_strncpy(modname, bname, MODULE_NAME_LEN);
71 filename2modname(bname, modname);
72 err = bb_delete_module(modname, flags);
74 bb_perror_msg_and_die("can't unload module '%s'",