mirror of
https://github.com/topjohnwu/ndk-busybox.git
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80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini lsmod implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
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enum {
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TAINT_PROPRIETORY_MODULE = (1 << 0),
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TAINT_FORCED_MODULE = (1 << 1),
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TAINT_UNSAFE_SMP = (1 << 2),
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};
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static void check_tainted(void)
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{
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int tainted = 0;
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char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL);
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if (buf) {
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tainted = atoi(buf);
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if (ENABLE_FEATURE_CLEAN_UP)
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free(buf);
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}
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if (tainted) {
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printf(" Tainted: %c%c%c\n",
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tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G',
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tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
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tainted & TAINT_UNSAFE_SMP ? 'S' : ' ');
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} else {
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puts(" Not tainted");
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}
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}
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#else
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static void check_tainted(void) { putchar('\n'); }
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#endif
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int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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{
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#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
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char *token[4];
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parser_t *parser = config_open("/proc/modules");
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printf("%-24sSize Used by", "Module");
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check_tainted();
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if (ENABLE_FEATURE_2_4_MODULES
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&& get_linux_version_code() < KERNEL_VERSION(2,6,0)
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) {
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while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
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if (token[3] != NULL && token[3][0] == '[') {
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token[3]++;
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token[3][strlen(token[3])-1] = '\0';
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} else
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token[3] = (char *) "";
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printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
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}
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} else {
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while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
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// N.B. token[3] is either '-' (module is not used by others)
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// or comma-separated list ended by comma
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// so trimming the trailing char is just what we need!
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token[3][strlen(token[3])-1] = '\0';
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printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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config_close(parser);
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#else
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check_tainted();
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xprint_and_close_file(xfopen_for_read("/proc/modules"));
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#endif
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return EXIT_SUCCESS;
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}
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