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