blob: 3b3c166b9401f4030fd64f39c15340a25d53293a
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini lsmod implementation for busybox |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com> |
7 | * |
8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
9 | */ |
10 | |
11 | //applet:IF_LSMOD(APPLET(lsmod, BB_DIR_SBIN, BB_SUID_DROP)) |
12 | |
13 | //usage:#if !ENABLE_MODPROBE_SMALL |
14 | //usage:#define lsmod_trivial_usage |
15 | //usage: "" |
16 | //usage:#define lsmod_full_usage "\n\n" |
17 | //usage: "List the currently loaded kernel modules" |
18 | //usage:#endif |
19 | |
20 | #include "libbb.h" |
21 | #include "unicode.h" |
22 | |
23 | #if ENABLE_FEATURE_CHECK_TAINTED_MODULE |
24 | enum { |
25 | TAINT_PROPRIETORY_MODULE = (1 << 0), |
26 | TAINT_FORCED_MODULE = (1 << 1), |
27 | TAINT_UNSAFE_SMP = (1 << 2), |
28 | }; |
29 | |
30 | static void check_tainted(void) |
31 | { |
32 | int tainted = 0; |
33 | char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL); |
34 | if (buf) { |
35 | tainted = atoi(buf); |
36 | if (ENABLE_FEATURE_CLEAN_UP) |
37 | free(buf); |
38 | } |
39 | |
40 | if (tainted) { |
41 | printf(" Tainted: %c%c%c\n", |
42 | tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G', |
43 | tainted & TAINT_FORCED_MODULE ? 'F' : ' ', |
44 | tainted & TAINT_UNSAFE_SMP ? 'S' : ' '); |
45 | } else { |
46 | puts(" Not tainted"); |
47 | } |
48 | } |
49 | #else |
50 | static void check_tainted(void) { putchar('\n'); } |
51 | #endif |
52 | |
53 | int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
54 | int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) |
55 | { |
56 | #if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT |
57 | char *token[4]; |
58 | parser_t *parser = config_open("/proc/modules"); |
59 | init_unicode(); |
60 | |
61 | printf("%-24sSize Used by", "Module"); |
62 | check_tainted(); |
63 | |
64 | if (ENABLE_FEATURE_2_4_MODULES |
65 | && get_linux_version_code() < KERNEL_VERSION(2,6,0) |
66 | ) { |
67 | while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) { |
68 | if (token[3] != NULL && token[3][0] == '[') { |
69 | token[3]++; |
70 | token[3][strlen(token[3])-1] = '\0'; |
71 | } else |
72 | token[3] = (char *) ""; |
73 | # if ENABLE_UNICODE_SUPPORT |
74 | { |
75 | uni_stat_t uni_stat; |
76 | char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]); |
77 | unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width; |
78 | printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]); |
79 | free(uni_name); |
80 | } |
81 | # else |
82 | printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]); |
83 | # endif |
84 | } |
85 | } else { |
86 | while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) { |
87 | // N.B. token[3] is either '-' (module is not used by others) |
88 | // or comma-separated list ended by comma |
89 | // so trimming the trailing char is just what we need! |
90 | if (token[3][0]) |
91 | token[3][strlen(token[3]) - 1] = '\0'; |
92 | # if ENABLE_UNICODE_SUPPORT |
93 | { |
94 | uni_stat_t uni_stat; |
95 | char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]); |
96 | unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width; |
97 | printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]); |
98 | free(uni_name); |
99 | } |
100 | # else |
101 | printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]); |
102 | # endif |
103 | } |
104 | } |
105 | if (ENABLE_FEATURE_CLEAN_UP) |
106 | config_close(parser); |
107 | #else |
108 | check_tainted(); |
109 | xprint_and_close_file(xfopen_for_read("/proc/modules")); |
110 | #endif |
111 | return EXIT_SUCCESS; |
112 | } |
113 |