80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini rmmod implementation for busybox
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
* Copyright (C) 2008 Timo Teras <timo.teras@iki.fi>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config RMMOD
|
|
//config: bool "rmmod (3.6 kb)"
|
|
//config: default y
|
|
//config: select PLATFORM_LINUX
|
|
//config: help
|
|
//config: rmmod is used to unload specified modules from the kernel.
|
|
|
|
//applet:IF_RMMOD(IF_NOT_MODPROBE_SMALL(APPLET(rmmod, BB_DIR_SBIN, BB_SUID_DROP)))
|
|
|
|
//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
|
|
//kbuild:lib-$(CONFIG_RMMOD) += rmmod.o modutils.o
|
|
//kbuild:endif
|
|
|
|
//usage:#if !ENABLE_MODPROBE_SMALL
|
|
//usage:#define rmmod_trivial_usage
|
|
//usage: "[-wfa] [MODULE]..."
|
|
//usage:#define rmmod_full_usage "\n\n"
|
|
//usage: "Unload kernel modules\n"
|
|
//usage: "\n -w Wait until the module is no longer used"
|
|
//usage: "\n -f Force unload"
|
|
//usage: "\n -a Remove all unused modules (recursively)"
|
|
//usage:#define rmmod_example_usage
|
|
//usage: "$ rmmod tulip\n"
|
|
//usage:#endif
|
|
|
|
#include "libbb.h"
|
|
#include "modutils.h"
|
|
|
|
int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int rmmod_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
int n, err;
|
|
unsigned flags = O_NONBLOCK | O_EXCL;
|
|
|
|
/* Parse command line. */
|
|
n = getopt32(argv, "wfas"); // -s ignored
|
|
argv += optind;
|
|
if (n & 1) // --wait
|
|
flags &= ~O_NONBLOCK;
|
|
if (n & 2) // --force
|
|
flags |= O_TRUNC;
|
|
if (n & 4) {
|
|
/* Unload _all_ unused modules via NULL delete_module() call */
|
|
err = bb_delete_module(NULL, flags);
|
|
if (err && err != EFAULT)
|
|
bb_perror_msg_and_die("rmmod");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
if (!*argv)
|
|
bb_show_usage();
|
|
|
|
n = ENABLE_FEATURE_2_4_MODULES && get_linux_version_code() < KERNEL_VERSION(2,6,0);
|
|
while (*argv) {
|
|
char modname[MODULE_NAME_LEN];
|
|
const char *bname;
|
|
|
|
bname = bb_basename(*argv++);
|
|
if (n)
|
|
safe_strncpy(modname, bname, MODULE_NAME_LEN);
|
|
else
|
|
filename2modname(bname, modname);
|
|
err = bb_delete_module(modname, flags);
|
|
if (err)
|
|
bb_perror_msg_and_die("can't unload module '%s'",
|
|
modname);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|