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, size_t *ret);
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;
72 static int my_query_module(const char *name, int which, void **buf,
73 size_t *bufsize, size_t *ret)
77 my_ret = query_module(name, which, *buf, *bufsize, ret);
79 if (my_ret == -1 && errno == ENOSPC) {
80 *buf = xrealloc(*buf, *ret);
83 my_ret = query_module(name, which, *buf, *bufsize, ret);
89 extern int lsmod_main(int argc, char **argv)
91 struct module_info info;
92 char *module_names, *mn, *deps, *dn;
93 size_t bufsize, depsize, nmod, count, i, j;
95 module_names = xmalloc(bufsize = 256);
96 if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize,
98 perror_msg_and_die("QM_MODULES");
101 deps = xmalloc(depsize = 256);
102 printf("Module Size Used by\n");
103 for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
104 if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
105 if (errno == ENOENT) {
106 /* The module was removed out from underneath us. */
110 perror_msg_and_die("module %s: QM_INFO", mn);
112 if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) {
113 if (errno == ENOENT) {
114 /* The module was removed out from underneath us. */
117 perror_msg_and_die("module %s: QM_REFS", mn);
119 printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
120 if (info.flags & NEW_MOD_DELETED)
122 else if (info.flags & NEW_MOD_INITIALIZING)
123 printf("(initializing)");
124 else if (!(info.flags & NEW_MOD_RUNNING))
125 printf("(uninitialized)");
127 if (info.flags & NEW_MOD_AUTOCLEAN)
128 printf("(autoclean) ");
129 if (!(info.flags & NEW_MOD_USED_ONCE))
132 if (count) printf("[");
133 for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
134 printf("%s%s", dn, (j==count-1)? "":" ");
136 if (count) printf("] ");
145 #else /*BB_FEATURE_OLD_MODULE_INTERFACE*/
147 extern int lsmod_main(int argc, char **argv)
152 puts("Module Size Used by");
155 if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {
156 while ((i = read(fd, line, sizeof(line))) > 0) {
157 write(fileno(stdout), line, i);
162 perror_msg_and_die("/proc/modules");
166 #endif /*BB_FEATURE_OLD_MODULE_INTERFACE*/