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    Contents of /trunk/mkinitrd-magellan/busybox/modutils/lsmod.c

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    Revision 984 - (show annotations) (download)
    Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
    File MIME type: text/plain
    File size: 2797 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    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 # if ENABLE_FEATURE_ASSUME_UNICODE
    50 size_t name_len;
    51 # endif
    52 init_unicode();
    53
    54 printf("%-24sSize Used by", "Module");
    55 check_tainted();
    56
    57 if (ENABLE_FEATURE_2_4_MODULES
    58 && get_linux_version_code() < KERNEL_VERSION(2,6,0)
    59 ) {
    60 while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
    61 if (token[3] != NULL && token[3][0] == '[') {
    62 token[3]++;
    63 token[3][strlen(token[3])-1] = '\0';
    64 } else
    65 token[3] = (char *) "";
    66 # if ENABLE_FEATURE_ASSUME_UNICODE
    67 name_len = unicode_strlen(token[0]);
    68 name_len = (name_len > 19) ? 0 : 19 - name_len;
    69 printf("%s%*s %8s %2s %s\n", token[0], name_len, "", token[1], token[2], token[3]);
    70 # else
    71 printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
    72 # endif
    73 }
    74 } else {
    75 while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
    76 // N.B. token[3] is either '-' (module is not used by others)
    77 // or comma-separated list ended by comma
    78 // so trimming the trailing char is just what we need!
    79 token[3][strlen(token[3])-1] = '\0';
    80 # if ENABLE_FEATURE_ASSUME_UNICODE
    81 name_len = unicode_strlen(token[0]);
    82 name_len = (name_len > 19) ? 0 : 19 - name_len;
    83 printf("%s%*s %8s %2s %s\n", token[0], name_len, "", token[1], token[2], token[3]);
    84 # else
    85 printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
    86 # endif
    87 }
    88 }
    89 if (ENABLE_FEATURE_CLEAN_UP)
    90 config_close(parser);
    91 #else
    92 check_tainted();
    93 xprint_and_close_file(xfopen_for_read("/proc/modules"));
    94 #endif
    95 return EXIT_SUCCESS;
    96 }