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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* vi: set sw=4 ts=4: */
/*
* Mini lsmod implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.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).
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
#ifndef CONFIG_FEATURE_CHECK_TAINTED_MODULE
static void check_tainted(void) { printf("\n"); }
#else
#define TAINT_FILENAME "/proc/sys/kernel/tainted"
#define TAINT_PROPRIETORY_MODULE (1<<0)
#define TAINT_FORCED_MODULE (1<<1)
#define TAINT_UNSAFE_SMP (1<<2)
static void check_tainted(void)
{
int tainted;
FILE *f;
tainted = 0;
if ((f = fopen(TAINT_FILENAME, "r"))) {
fscanf(f, "%d", &tainted);
fclose(f);
}
if (f && tainted) {
printf(" Tainted: %c%c%c\n",
tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G',
tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
tainted & TAINT_UNSAFE_SMP ? 'S' : ' ');
}
else {
printf(" Not tainted\n");
}
}
#endif
#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
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);
enum {
/* Values for query_module's which. */
QM_MODULES = 1,
QM_DEPS = 2,
QM_REFS = 3,
QM_SYMBOLS = 4,
QM_INFO = 5,
/* Bits of module.flags. */
NEW_MOD_RUNNING = 1,
NEW_MOD_DELETED = 2,
NEW_MOD_AUTOCLEAN = 4,
NEW_MOD_VISITED = 8,
NEW_MOD_USED_ONCE = 16,
NEW_MOD_INITIALIZING = 64
};
int lsmod_main(int argc, char **argv)
{
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, depsize, nmod, count, i, j;
module_names = deps = NULL;
bufsize = depsize = 0;
while(query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
if (errno != ENOSPC) bb_perror_msg_and_die("QM_MODULES");
module_names = xmalloc(bufsize = nmod);
}
deps = xmalloc(depsize = 256);
printf("Module\t\t\tSize Used by");
check_tainted();
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 */
bb_perror_msg_and_die("module %s: QM_INFO", mn);
}
while (query_module(mn, QM_REFS, deps, depsize, &count)) {
if (errno == ENOENT) {
/* The module was removed out from underneath us. */
continue;
} else if (errno != ENOSPC)
bb_perror_msg_and_die("module %s: QM_REFS", mn);
deps = xrealloc(deps, count);
}
printf("%-20s%8lu%4ld", mn, info.size, info.usecount);
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)");
}
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("]");
printf("\n");
}
#ifdef CONFIG_FEATURE_CLEAN_UP
free(module_names);
#endif
return( 0);
}
#else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
int lsmod_main(int argc, char **argv)
{
FILE *file = xfopen("/proc/modules", "r");
printf("Module Size Used by");
check_tainted();
#if defined(CONFIG_FEATURE_LSMOD_PRETTY_2_6_OUTPUT)
{
char line[4096];
while (fgets(line, sizeof(line), file)) {
char *tok;
tok = strtok(line, " \t");
printf("%-19s", tok);
tok = strtok(NULL, " \t\n");
printf(" %8s", tok);
tok = strtok(NULL, " \t\n");
/* Null if no module unloading support. */
if (tok) {
printf(" %s", tok);
tok = strtok(NULL, "\n");
if (!tok)
tok = "";
/* New-style has commas, or -. If so,
truncate (other fields might follow). */
else if (strchr(tok, ',')) {
tok = strtok(tok, "\t ");
/* Strip trailing comma. */
if (tok[strlen(tok)-1] == ',')
tok[strlen(tok)-1] = '\0';
} else if (tok[0] == '-'
&& (tok[1] == '\0' || isspace(tok[1])))
tok = "";
printf(" %s", tok);
}
printf("\n");
}
fclose(file);
}
#else
xprint_and_close_file(file);
#endif /* CONFIG_FEATURE_2_6_MODULES */
return EXIT_SUCCESS;
}
#endif /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
|
