1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* vi: set sw=4 ts=4: */
/*
* Mini lsmod implementation for busybox
*
* Copyright (C) 1999,2000 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and
* Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels
* (which lack the query_module() interface).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <errno.h>
#include <unistd.h>
#include <dirent.h>
#include <ctype.h>
#include <assert.h>
#include <getopt.h>
#include <sys/utsname.h>
#include <sys/file.h>
#if !defined(BB_FEATURE_LSMOD_NEW_KERNEL) && !defined(BB_FEATURE_LSMOD_OLD_KERNEL)
#error "Must have ether BB_FEATURE_LSMOD_NEW_KERNEL or BB_FEATURE_LSMOD_OLD_KERNEL defined"
#endif
#ifdef BB_FEATURE_LSMOD_NEW_KERNEL
struct module_info
{
unsigned long addr;
unsigned long size;
unsigned long flags;
long usecount;
};
int query_module(const char *name, int which, void *buf, size_t bufsize,
size_t *ret);
/* Values for query_module's which. */
#define QM_MODULES 1
#define QM_DEPS 2
#define QM_REFS 3
#define QM_SYMBOLS 4
#define QM_INFO 5
/* Bits of module.flags. */
#define NEW_MOD_RUNNING 1
#define NEW_MOD_DELETED 2
#define NEW_MOD_AUTOCLEAN 4
#define NEW_MOD_VISITED 8
#define NEW_MOD_USED_ONCE 16
#define NEW_MOD_INITIALIZING 64
extern int lsmod_main(int argc, char **argv)
{
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, nmod, count, i, j;
module_names = xmalloc(bufsize = 256);
deps = xmalloc(bufsize);
if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
fatalError("QM_MODULES: %s\n", strerror(errno));
}
printf("Module Size Used by\n");
for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {
if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {
if (errno == ENOENT) {
/* The module was removed out from underneath us. */
continue;
}
/* else choke */
fatalError("module %s: QM_INFO: %s\n", mn, strerror(errno));
}
while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
if (errno == ENOENT) {
/* The module was removed out from underneath us. */
continue;
}
if (errno != ENOSPC) {
fatalError("module %s: QM_REFS: %s", mn, strerror(errno));
}
deps = xrealloc(deps, bufsize = count);
}
printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
if (count) printf("[");
for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {
printf("%s%s", dn, (j==count-1)? "":" ");
}
if (count) printf("] ");
if (info.flags & NEW_MOD_DELETED)
printf("(deleted)");
else if (info.flags & NEW_MOD_INITIALIZING)
printf("(initializing)");
else if (!(info.flags & NEW_MOD_RUNNING))
printf("(uninitialized)");
else {
if (info.flags & NEW_MOD_AUTOCLEAN)
printf("(autoclean) ");
if (!(info.flags & NEW_MOD_USED_ONCE))
printf("(unused)");
}
printf("\n");
}
return( 0);
}
#else /*BB_FEATURE_LSMOD_OLD_KERNEL*/
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#endif
extern int lsmod_main(int argc, char **argv)
{
int fd, i;
char line[128];
puts("Module Size Used by");
fflush(stdout);
if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {
while ((i = read(fd, line, sizeof(line))) > 0) {
write(fileno(stdout), line, i);
}
close(fd);
return 0;
}
fatalError("/proc/modules: %s\n", strerror(errno));
return 1;
}
#endif /*BB_FEATURE_LSMOD_OLD_KERNEL*/
|
