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Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Erik Andersen6f23cec1999-12-15 22:14:12 +00002/*
3 * Mini lsmod implementation for busybox
4 *
Erik Andersen61677fe2000-04-13 01:18:56 +00005 * Copyright (C) 1999,2000 by Lineo, inc.
Erik Andersen6f23cec1999-12-15 22:14:12 +00006 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include "internal.h"
Eric Andersenbe0dc0d2000-08-21 19:25:16 +000025#include <stdlib.h>
Erik Andersen6f23cec1999-12-15 22:14:12 +000026#include <stdio.h>
Eric Andersenbe0dc0d2000-08-21 19:25:16 +000027#include <stddef.h>
28#include <errno.h>
29#include <unistd.h>
30#include <dirent.h>
31#include <ctype.h>
32#include <assert.h>
33#include <getopt.h>
34#include <sys/utsname.h>
35
36
37
38struct module_info
39{
40 unsigned long addr;
41 unsigned long size;
42 unsigned long flags;
43 long usecount;
44};
45
46
47int query_module(const char *name, int which, void *buf, size_t bufsize,
48 size_t *ret);
49
50/* Values for query_module's which. */
51#define QM_MODULES 1
52#define QM_DEPS 2
53#define QM_REFS 3
54#define QM_SYMBOLS 4
55#define QM_INFO 5
56
Eric Andersende34e432000-09-10 16:16:00 +000057/* Bits of module.flags. */
58#define NEW_MOD_RUNNING 1
59#define NEW_MOD_DELETED 2
60#define NEW_MOD_AUTOCLEAN 4
61#define NEW_MOD_VISITED 8
62#define NEW_MOD_USED_ONCE 16
63#define NEW_MOD_INITIALIZING 64
Erik Andersen6f23cec1999-12-15 22:14:12 +000064
65
Erik Andersen6f23cec1999-12-15 22:14:12 +000066extern int lsmod_main(int argc, char **argv)
67{
Eric Andersenbe0dc0d2000-08-21 19:25:16 +000068 struct module_info info;
69 char *module_names, *mn, *deps, *dn;
70 size_t bufsize, nmod, count, i, j;
Erik Andersene49d5ec2000-02-08 19:58:47 +000071
Eric Andersenbe0dc0d2000-08-21 19:25:16 +000072 module_names = xmalloc(bufsize = 256);
73 deps = xmalloc(bufsize);
74 if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
75 fatalError("QM_MODULES: %s\n", strerror(errno));
76 }
77
78 printf("Module Size Used by\n");
79 for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
80 if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
81 if (errno == ENOENT) {
82 /* The module was removed out from underneath us. */
83 continue;
84 }
85 /* else choke */
86 fatalError("module %s: QM_INFO: %s\n", mn, strerror(errno));
87 }
88 while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
89 if (errno == ENOENT) {
90 /* The module was removed out from underneath us. */
91 continue;
92 }
93 if (errno != ENOSPC) {
94 fatalError("module %s: QM_REFS: %s", mn, strerror(errno));
95 }
96 deps = xrealloc(deps, bufsize = count);
97 }
98 printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
99 if (count) printf("[");
100 for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
101 printf("%s%s", dn, (j==count-1)? "":" ");
102 }
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000103 if (count) printf("] ");
Eric Andersende34e432000-09-10 16:16:00 +0000104
105 if (info.flags & NEW_MOD_DELETED)
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000106 printf("(deleted)");
Eric Andersende34e432000-09-10 16:16:00 +0000107 else if (info.flags & NEW_MOD_INITIALIZING)
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000108 printf("(initializing)");
Eric Andersende34e432000-09-10 16:16:00 +0000109 else if (!(info.flags & NEW_MOD_RUNNING))
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000110 printf("(uninitialized)");
Eric Andersende34e432000-09-10 16:16:00 +0000111 else {
112 if (info.flags & NEW_MOD_AUTOCLEAN)
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000113 printf("(autoclean)");
Eric Andersende34e432000-09-10 16:16:00 +0000114 if (!(info.flags & NEW_MOD_USED_ONCE))
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000115 printf("(unused)");
Eric Andersende34e432000-09-10 16:16:00 +0000116 }
Eric Andersenccb0a9b2000-09-12 16:20:49 +0000117 printf("\n");
Eric Andersenbe0dc0d2000-08-21 19:25:16 +0000118 }
119
120
121 return( 0);
Erik Andersen6f23cec1999-12-15 22:14:12 +0000122}