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 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include <sys/syscall.h>
33 #ifdef CONFIG_FEATURE_2_6_MODULES
34 static inline void filename2modname(char *modname, const char *filename)
36 const char *afterslash;
39 afterslash = strrchr(filename, '/');
41 afterslash = filename;
45 /* Convert to underscores, stop at first . */
46 for (i = 0; afterslash[i] && afterslash[i] != '.'; i++) {
47 if (afterslash[i] == '-')
50 modname[i] = afterslash[i];
56 extern int rmmod_main(int argc, char **argv)
58 int n, ret = EXIT_SUCCESS;
59 size_t nmod = 0; /* number of modules */
60 size_t pnmod = -1; /* previous number of modules */
61 unsigned int flags = O_NONBLOCK|O_EXCL;
62 #ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
63 void *buf; /* hold the module names which we ignore but must get */
67 /* Parse command line. */
68 while ((n = getopt(argc, argv, "a")) != EOF) {
77 /* Unload _all_ unused modules via NULL delete_module() call */
78 /* until the number of modules does not change */
79 #ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
80 buf = xmalloc(bufsize = 256);
82 while (nmod != pnmod) {
83 if (syscall(__NR_delete_module, NULL, flags) < 0) {
86 bb_perror_msg_and_die("rmmod");
89 #ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
91 if (my_query_module(NULL, 1, &buf, &bufsize, &nmod)) {
92 bb_perror_msg_and_die("QM_MODULES");
96 #if defined CONFIG_FEATURE_CLEAN_UP && CONFIG_FEATURE_QUERY_MODULE_INTERFACE
109 for (n = optind; n < argc; n++) {
110 #ifdef CONFIG_FEATURE_2_6_MODULES
111 char module_name[strlen(argv[n]) + 1];
112 filename2modname(module_name, argv[n]);
114 #define module_name argv[n]
116 if (syscall(__NR_delete_module, module_name, flags) < 0) {
117 bb_perror_msg("%s", argv[n]);