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>
43 #ifdef BB_FEATURE_NEW_MODULE_INTERFACE
54 int query_module(const char *name, int which, void *buf, size_t bufsize,
57 /* Values for query_module's which. */
58 static const int QM_MODULES = 1;
59 static const int QM_DEPS = 2;
60 static const int QM_REFS = 3;
61 static const int QM_SYMBOLS = 4;
62 static const int QM_INFO = 5;
64 /* Bits of module.flags. */
65 static const int NEW_MOD_RUNNING = 1;
66 static const int NEW_MOD_DELETED = 2;
67 static const int NEW_MOD_AUTOCLEAN = 4;
68 static const int NEW_MOD_VISITED = 8;
69 static const int NEW_MOD_USED_ONCE = 16;
70 static const int NEW_MOD_INITIALIZING = 64;
73 extern int lsmod_main(int argc, char **argv)
75 struct module_info info;
76 char *module_names, *mn, *deps, *dn;
77 size_t bufsize, nmod, count, i, j;
79 module_names = xmalloc(bufsize = 256);
80 deps = xmalloc(bufsize);
81 if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
82 perror_msg_and_die("QM_MODULES");
85 printf("Module Size Used by\n");
86 for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
87 if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
88 if (errno == ENOENT) {
89 /* The module was removed out from underneath us. */
93 perror_msg_and_die("module %s: QM_INFO", mn);
95 while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
96 if (errno == ENOENT) {
97 /* The module was removed out from underneath us. */
100 if (errno != ENOSPC) {
101 error_msg_and_die("module %s: QM_REFS", mn);
103 deps = xrealloc(deps, bufsize = count);
105 printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
106 if (count) printf("[");
107 for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
108 printf("%s%s", dn, (j==count-1)? "":" ");
110 if (count) printf("] ");
112 if (info.flags & NEW_MOD_DELETED)
114 else if (info.flags & NEW_MOD_INITIALIZING)
115 printf("(initializing)");
116 else if (!(info.flags & NEW_MOD_RUNNING))
117 printf("(uninitialized)");
119 if (info.flags & NEW_MOD_AUTOCLEAN)
120 printf("(autoclean) ");
121 if (!(info.flags & NEW_MOD_USED_ONCE))
131 #else /*BB_FEATURE_OLD_MODULE_INTERFACE*/
133 #if ! defined BB_FEATURE_USE_PROCFS
134 #error Sorry, I depend on the /proc filesystem right now.
137 extern int lsmod_main(int argc, char **argv)
142 puts("Module Size Used by");
145 if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {
146 while ((i = read(fd, line, sizeof(line))) > 0) {
147 write(fileno(stdout), line, i);
152 perror_msg_and_die("/proc/modules");
156 #endif /*BB_FEATURE_OLD_MODULE_INTERFACE*/