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/* vi: set sw=4 ts=4: */
/*
* Mini lsmod implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config LSMOD
//config: bool "lsmod (4.3 kb)"
//config: default y
//config: select PLATFORM_LINUX
//config: help
//config: lsmod is used to display a list of loaded modules.
//config:
//config:config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
//config: bool "Pretty output"
//config: default y
//config: depends on LSMOD && !MODPROBE_SMALL
//config: help
//config: This option makes output format of lsmod adjusted to
//config: the format of module-init-tools for Linux kernel 2.6.
//config: Increases size somewhat.
//applet:IF_LSMOD(IF_NOT_MODPROBE_SMALL(APPLET(lsmod, BB_DIR_SBIN, BB_SUID_DROP)))
//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
//kbuild:lib-$(CONFIG_LSMOD) += lsmod.o modutils.o
//kbuild:endif
//usage:#if !ENABLE_MODPROBE_SMALL
//usage:#define lsmod_trivial_usage
//usage: ""
//usage:#define lsmod_full_usage "\n\n"
//usage: "List loaded kernel modules"
//usage:#endif
#include "libbb.h"
#include "unicode.h"
#if ENABLE_FEATURE_CHECK_TAINTED_MODULE
enum {
TAINT_PROPRIETORY_MODULE = (1 << 0),
TAINT_FORCED_MODULE = (1 << 1),
TAINT_UNSAFE_SMP = (1 << 2),
};
static void check_tainted(void)
{
int tainted = 0;
char *buf = xmalloc_open_read_close("/proc/sys/kernel/tainted", NULL);
if (buf) {
tainted = atoi(buf);
if (ENABLE_FEATURE_CLEAN_UP)
free(buf);
}
if (tainted) {
printf(" Tainted: %c%c%c\n",
tainted & TAINT_PROPRIETORY_MODULE ? 'P' : 'G',
tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
tainted & TAINT_UNSAFE_SMP ? 'S' : ' ');
} else {
puts(" Not tainted");
}
}
#else
static void check_tainted(void) { putchar('\n'); }
#endif
int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
char *token[4];
parser_t *parser = config_open("/proc/modules");
init_unicode();
printf("%-24sSize Used by", "Module");
check_tainted();
if (ENABLE_FEATURE_2_4_MODULES
&& get_linux_version_code() < KERNEL_VERSION(2,6,0)
) {
while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
if (token[3] != NULL && token[3][0] == '[') {
token[3]++;
token[3][strlen(token[3])-1] = '\0';
} else
token[3] = (char *) "";
# if ENABLE_UNICODE_SUPPORT
{
uni_stat_t uni_stat;
char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
free(uni_name);
}
# else
printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
# endif
}
} else {
while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
// N.B. token[3] is either '-' (module is not used by others)
// or comma-separated list ended by comma
// so trimming the trailing char is just what we need!
if (token[3][0])
token[3][strlen(token[3]) - 1] = '\0';
# if ENABLE_UNICODE_SUPPORT
{
uni_stat_t uni_stat;
char *uni_name = unicode_conv_to_printable(&uni_stat, token[0]);
unsigned pad_len = (uni_stat.unicode_width > 19) ? 0 : 19 - uni_stat.unicode_width;
printf("%s%*s %8s %2s %s\n", uni_name, pad_len, "", token[1], token[2], token[3]);
free(uni_name);
}
# else
printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
# endif
}
}
if (ENABLE_FEATURE_CLEAN_UP)
config_close(parser);
#else
check_tainted();
xprint_and_close_file(xfopen_for_read("/proc/modules"));
#endif
return EXIT_SUCCESS;
}
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