1 /* vi: set sw=4 ts=4: */
3 * Mini lsmod implementation for busybox
5 * Copyright (C) 1999,2000 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
8 * Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and
9 * Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels
10 * (which lack the query_module() interface).
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
38 #include <sys/utsname.h>
43 #if !defined(BB_FEATURE_LSMOD_NEW_KERNEL) && !defined(BB_FEATURE_LSMOD_OLD_KERNEL)
44 #error "Must have ether BB_FEATURE_LSMOD_NEW_KERNEL or BB_FEATURE_LSMOD_OLD_KERNEL defined"
47 #ifdef BB_FEATURE_LSMOD_NEW_KERNEL
58 int query_module(const char *name, int which, void *buf, size_t bufsize,
61 /* Values for query_module's which. */
68 /* Bits of module.flags. */
69 #define NEW_MOD_RUNNING 1
70 #define NEW_MOD_DELETED 2
71 #define NEW_MOD_AUTOCLEAN 4
72 #define NEW_MOD_VISITED 8
73 #define NEW_MOD_USED_ONCE 16
74 #define NEW_MOD_INITIALIZING 64
77 extern int lsmod_main(int argc, char **argv)
79 struct module_info info;
80 char *module_names, *mn, *deps, *dn;
81 size_t bufsize, nmod, count, i, j;
83 module_names = xmalloc(bufsize = 256);
84 deps = xmalloc(bufsize);
85 if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
86 error_msg_and_die("QM_MODULES: %s\n", strerror(errno));
89 printf("Module Size Used by\n");
90 for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
91 if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
92 if (errno == ENOENT) {
93 /* The module was removed out from underneath us. */
97 error_msg_and_die("module %s: QM_INFO: %s\n", mn, strerror(errno));
99 while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
100 if (errno == ENOENT) {
101 /* The module was removed out from underneath us. */
104 if (errno != ENOSPC) {
105 error_msg_and_die("module %s: QM_REFS: %s", mn, strerror(errno));
107 deps = xrealloc(deps, bufsize = count);
109 printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
110 if (count) printf("[");
111 for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
112 printf("%s%s", dn, (j==count-1)? "":" ");
114 if (count) printf("] ");
116 if (info.flags & NEW_MOD_DELETED)
118 else if (info.flags & NEW_MOD_INITIALIZING)
119 printf("(initializing)");
120 else if (!(info.flags & NEW_MOD_RUNNING))
121 printf("(uninitialized)");
123 if (info.flags & NEW_MOD_AUTOCLEAN)
124 printf("(autoclean) ");
125 if (!(info.flags & NEW_MOD_USED_ONCE))
135 #else /*BB_FEATURE_LSMOD_OLD_KERNEL*/
137 #if ! defined BB_FEATURE_USE_PROCFS
138 #error Sorry, I depend on the /proc filesystem right now.
141 extern int lsmod_main(int argc, char **argv)
146 puts("Module Size Used by");
149 if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {
150 while ((i = read(fd, line, sizeof(line))) > 0) {
151 write(fileno(stdout), line, i);
156 error_msg_and_die("/proc/modules: %s\n", strerror(errno));
160 #endif /*BB_FEATURE_LSMOD_OLD_KERNEL*/