1 /* vi: set sw=4 ts=4: */
3 * Mini lsmod implementation for busybox
5 * Copyright (C) 1999,2000,2001 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>
44 #ifdef BB_FEATURE_NEW_MODULE_INTERFACE
55 int query_module(const char *name, int which, void *buf, size_t bufsize,
58 /* Values for query_module's which. */
59 static const int QM_MODULES = 1;
60 static const int QM_DEPS = 2;
61 static const int QM_REFS = 3;
62 static const int QM_SYMBOLS = 4;
63 static const int QM_INFO = 5;
65 /* Bits of module.flags. */
66 static const int NEW_MOD_RUNNING = 1;
67 static const int NEW_MOD_DELETED = 2;
68 static const int NEW_MOD_AUTOCLEAN = 4;
69 static const int NEW_MOD_VISITED = 8;
70 static const int NEW_MOD_USED_ONCE = 16;
71 static const int NEW_MOD_INITIALIZING = 64;
74 extern int lsmod_main(int argc, char **argv)
76 struct module_info info;
77 char *module_names, *mn, *deps, *dn;
78 size_t bufsize, nmod, count, i, j;
80 module_names = xmalloc(bufsize = 256);
81 deps = xmalloc(bufsize);
82 if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
83 perror_msg_and_die("QM_MODULES");
86 printf("Module Size Used by\n");
87 for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
88 if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
89 if (errno == ENOENT) {
90 /* The module was removed out from underneath us. */
94 perror_msg_and_die("module %s: QM_INFO", mn);
96 while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
97 if (errno == ENOENT) {
98 /* The module was removed out from underneath us. */
101 if (errno != ENOSPC) {
102 error_msg_and_die("module %s: QM_REFS", mn);
104 deps = xrealloc(deps, bufsize = count);
106 printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
107 if (info.flags & NEW_MOD_DELETED)
109 else if (info.flags & NEW_MOD_INITIALIZING)
110 printf("(initializing)");
111 else if (!(info.flags & NEW_MOD_RUNNING))
112 printf("(uninitialized)");
114 if (info.flags & NEW_MOD_AUTOCLEAN)
115 printf("(autoclean) ");
116 if (!(info.flags & NEW_MOD_USED_ONCE))
119 if (count) printf("[");
120 for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
121 printf("%s%s", dn, (j==count-1)? "":" ");
123 if (count) printf("] ");
132 #else /*BB_FEATURE_OLD_MODULE_INTERFACE*/
134 extern int lsmod_main(int argc, char **argv)
139 puts("Module Size Used by");
142 if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {
143 while ((i = read(fd, line, sizeof(line))) > 0) {
144 write(fileno(stdout), line, i);
149 perror_msg_and_die("/proc/modules");
153 #endif /*BB_FEATURE_OLD_MODULE_INTERFACE*/