1 /* vi: set sw=4 ts=4: */
3 * Mini rmmod implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
13 extern int delete_module(const char *module, unsigned int flags);
15 # include <sys/syscall.h>
16 # define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags)
19 #if ENABLE_FEATURE_2_6_MODULES
20 static inline void filename2modname(char *modname, const char *afterslash)
25 if (ENABLE_FEATURE_2_4_MODULES
26 && get_linux_version_code() <= KERNEL_VERSION(2,6,0))
29 /* Convert to underscores, stop at first . */
30 for (i = 0; afterslash[i] && afterslash[i] != '.'; i++) {
31 if (kr_chk && (afterslash[i] == '-'))
34 modname[i] = afterslash[i];
39 void filename2modname(char *modname, const char *afterslash);
42 // There really should be a header file for this...
44 int query_module(const char *name, int which, void *buf,
45 size_t bufsize, size_t *ret);
47 int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
48 int rmmod_main(int argc, char **argv)
50 int n, ret = EXIT_SUCCESS;
51 unsigned int flags = O_NONBLOCK|O_EXCL;
53 #define misc_buf bb_common_bufsiz1
55 /* Parse command line. */
56 n = getopt32(argv, "wfa");
62 /* Unload _all_ unused modules via NULL delete_module() call */
63 /* until the number of modules does not change */
64 size_t nmod = 0; /* number of modules */
65 size_t pnmod = -1; /* previous number of modules */
67 while (nmod != pnmod) {
68 if (delete_module(NULL, flags) != 0) {
71 bb_perror_msg_and_die("rmmod");
74 // the 1 here is QM_MODULES.
75 if (ENABLE_FEATURE_QUERY_MODULE_INTERFACE && query_module(NULL,
76 1, misc_buf, sizeof(misc_buf),
79 bb_perror_msg_and_die("QM_MODULES");
88 for (n = optind; n < argc; n++) {
89 if (ENABLE_FEATURE_2_6_MODULES) {
90 filename2modname(misc_buf, bb_basename(argv[n]));
93 if (delete_module(ENABLE_FEATURE_2_6_MODULES ? misc_buf : argv[n], flags)) {
94 bb_simple_perror_msg(argv[n]);