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
|
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -9,6 +9,99 @@
#include "libbb.h"
#include "modutils.h"
+#include <sys/utsname.h>
+#ifndef CONFIG_FEATURE_2_4_MODULES
+#include <sys/mman.h>
+#include <asm/unistd.h>
+#include <sys/syscall.h>
+#endif
+
+static char *g_filename = NULL;
+
+static int FAST_FUNC check_module_name_match(const char *filename, struct stat *statbuf,
+ void *userdata, int depth)
+{
+ char *fullname = (char *) userdata;
+ char *tmp;
+
+ if (fullname[0] == '\0')
+ return FALSE;
+
+ tmp = bb_get_last_path_component_nostrip(filename);
+ if (strcmp(tmp, fullname) == 0) {
+ /* Stop searching if we find a match */
+ g_filename = xstrdup(filename);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static int find_module(char *filename)
+{
+ char *module_dir, real_module_dir[FILENAME_MAX];
+ int len, slen, ret = ENOENT, k_version;
+ struct utsname myuname;
+ const char *suffix;
+ struct stat st;
+
+ /* check the kernel version */
+ if ((uname(&myuname) != 0) || (myuname.release[0] != '2'))
+ return EINVAL;
+
+ k_version = myuname.release[2] - '0';
+#if ENABLE_FEATURE_2_4_MODULES
+ if (k_version <= 4)
+ suffix = ".o";
+ else
+#endif
+ suffix = ".ko";
+
+ len = strlen(filename);
+ slen = strlen(suffix);
+
+ /* check for suffix and absolute path first */
+ if ((len < slen + 2) || (strcmp(filename + len - slen, suffix) != 0)) {
+ filename = xasprintf("%s%s", filename, suffix);
+ } else {
+ filename = strdup(filename);
+ if ((stat(filename, &st) == 0) && S_ISREG(st.st_mode)) {
+ g_filename = filename;
+ return 0;
+ }
+ free(filename);
+ return ENOENT;
+ }
+
+ /* next: scan /lib/modules/<release> */
+ /* Jump through hoops in case /lib/modules/`uname -r`
+ * is a symlink. We do not want recursive_action to
+ * follow symlinks, but we do want to follow the
+ * /lib/modules/`uname -r` dir, So resolve it ourselves
+ * if it is a link... */
+ module_dir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, myuname.release);
+ if (realpath(module_dir, real_module_dir) != NULL) {
+ free(module_dir);
+ module_dir = real_module_dir;
+ }
+
+ recursive_action(module_dir, ACTION_RECURSE,
+ check_module_name_match, 0, filename, 0);
+
+ /* Check if we have a complete path */
+ if (g_filename == NULL)
+ goto done;
+
+ if ((stat(g_filename, &st) == 0) && S_ISREG(st.st_mode))
+ ret = 0;
+ else
+ free(g_filename);
+
+done:
+ free(filename);
+
+ return ret;
+}
int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int insmod_main(int argc UNUSED_PARAM, char **argv)
@@ -33,9 +126,15 @@ int insmod_main(int argc UNUSED_PARAM, c
if (!filename)
bb_show_usage();
- rc = bb_init_module(filename, parse_cmdline_module_options(argv));
+ rc = find_module(filename);
+ if (rc || (g_filename == NULL))
+ goto done;
+
+ rc = bb_init_module(g_filename, parse_cmdline_module_options(argv));
if (rc)
bb_error_msg("can't insert '%s': %s", filename, moderror(rc));
+ free (g_filename);
+done:
return rc;
}
--- a/modutils/Config.in
+++ b/modutils/Config.in
@@ -210,7 +210,7 @@ config FEATURE_MODUTILS_SYMBOLS
config DEFAULT_MODULES_DIR
string "Default directory containing modules"
default "/lib/modules"
- depends on DEPMOD || MODPROBE || MODPROBE_SMALL
+ depends on DEPMOD || INSMOD || MODPROBE || MODPROBE_SMALL
help
Directory that contains kernel modules.
Defaults to "/lib/modules"
|
