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    Contents of /tags/mkinitrd-6_3_4/busybox/modutils/lsmod.c

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    Revision 1189 - (show annotations) (download)
    Thu Dec 16 01:27:43 2010 UTC (13 years, 5 months ago) by niro
    File MIME type: text/plain
    File size: 2964 byte(s) 
    tagged 'mkinitrd-6_3_4'
    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 tarball for details.
    9 */
    10 #include "libbb.h"
    11 #include "unicode.h"
    12
    13 #if ENABLE_FEATURE_CHECK_TAINTED_MODULE
    14 enum {
    15 TAINT_PROPRIETORY_MODULE = (1 << 0),
    16 TAINT_FORCED_MODULE = (1 << 1),
    17 TAINT_UNSAFE_SMP = (1 << 2),
    18 };
    19
    20 static void check_tainted(void)
    21 {
    22 int tainted = 0;
    23 char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL);
    24 if (buf) {
    25 tainted = atoi(buf);
    26 if (ENABLE_FEATURE_CLEAN_UP)
    27 free(buf);
    28 }
    29
    30 if (tainted) {
    31 printf(" Tainted: %c%c%c\n",
    32 tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G',
    33 tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
    34 tainted & TAINT_UNSAFE_SMP ? 'S' : ' ');
    35 } else {
    36 puts(" Not tainted");
    37 }
    38 }
    39 #else
    40 static void check_tainted(void) { putchar('\n'); }
    41 #endif
    42
    43 int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
    44 int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
    45 {
    46 #if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
    47 char *token[4];
    48 parser_t *parser = config_open("/proc/modules");
    49 init_unicode();
    50
    51 printf("%-24sSize Used by", "Module");
    52 check_tainted();
    53
    54 if (ENABLE_FEATURE_2_4_MODULES
    55 && get_linux_version_code() < KERNEL_VERSION(2,6,0)
    56 ) {
    57 while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
    58 if (token[3] != NULL && token[3][0] == '[') {
    59 token[3]++;
    60 token[3][strlen(token[3])-1] = '\0';
    61 } else
    62 token[3] = (char *) "";
    63 # if ENABLE_UNICODE_SUPPORT
    64 {
    65 uni_stat_t uni_stat;
    66 char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
    67 unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
    68 printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
    69 free(uni_name);
    70 }
    71 # else
    72 printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
    73 # endif
    74 }
    75 } else {
    76 while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
    77 // N.B. token[3] is either '-' (module is not used by others)
    78 // or comma-separated list ended by comma
    79 // so trimming the trailing char is just what we need!
    80 token[3][strlen(token[3])-1] = '\0';
    81 # if ENABLE_UNICODE_SUPPORT
    82 {
    83 uni_stat_t uni_stat;
    84 char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
    85 unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
    86 printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
    87 free(uni_name);
    88 }
    89 # else
    90 printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
    91 # endif
    92 }
    93 }
    94 if (ENABLE_FEATURE_CLEAN_UP)
    95 config_close(parser);
    96 #else
    97 check_tainted();
    98 xprint_and_close_file(xfopen_for_read("/proc/modules"));
    99 #endif
    100 return EXIT_SUCCESS;
    101 }