135 lines
3.8 KiB
C
135 lines
3.8 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 source tree.
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*/
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//config:config LSMOD
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//config: bool "lsmod (1.9 kb)"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: lsmod is used to display a list of loaded modules.
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//config:
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//config:config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
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//config: bool "Pretty output"
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//config: default y
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//config: depends on LSMOD && !MODPROBE_SMALL
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//config: help
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//config: This option makes output format of lsmod adjusted to
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//config: the format of module-init-tools for Linux kernel 2.6.
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//config: Increases size somewhat.
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//applet:IF_LSMOD(IF_NOT_MODPROBE_SMALL(APPLET_NOEXEC(lsmod, lsmod, BB_DIR_SBIN, BB_SUID_DROP, lsmod)))
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//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
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//kbuild:lib-$(CONFIG_LSMOD) += lsmod.o modutils.o
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//kbuild:endif
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//usage:#if !ENABLE_MODPROBE_SMALL
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//usage:#define lsmod_trivial_usage
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//usage: ""
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//usage:#define lsmod_full_usage "\n\n"
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//usage: "List loaded kernel modules"
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//usage:#endif
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#include "libbb.h"
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#include "unicode.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 ALWAYS_INLINE void check_tainted(void)
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{
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putchar('\n');
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}
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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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init_unicode();
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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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# if ENABLE_UNICODE_SUPPORT
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{
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uni_stat_t uni_stat;
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char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
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unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
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printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
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free(uni_name);
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}
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# else
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printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
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# endif
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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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if (token[3][0])
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token[3][strlen(token[3]) - 1] = '\0';
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# if ENABLE_UNICODE_SUPPORT
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{
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uni_stat_t uni_stat;
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char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
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unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
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printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
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free(uni_name);
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}
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# else
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printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
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# endif
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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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