busybox/modutils/lsmod.c

/* 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 tarball for details.
 */

#include "libbb.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");
	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 *) "";
			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
		}
	} 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!
			token[3][strlen(token[3])-1] = '\0';
			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
		}
	}
	if (ENABLE_FEATURE_CLEAN_UP)
		config_close(parser);
#else
	check_tainted();
	xprint_and_close_file(xfopen_for_read("/proc/modules"));
#endif
	return EXIT_SUCCESS;
}
1	niro	532	/* 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	niro	816	* Copyright (C) 2008 by Vladimir Dronnikov <dronnikov@gmail.com>
7	niro	532	*
8			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9			*/
10
11	niro	816	#include "libbb.h"
12	niro	532
13	niro	816	#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	niro	532
20			static void check_tainted(void)
21			{
22	niro	816	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	niro	532
30	niro	816	if (tainted) {
31	niro	532	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	niro	816	} else {
36			puts(" Not tainted");
37	niro	532	}
38			}
39	niro	816	#else
40			static void check_tainted(void) { putchar('\n'); }
41	niro	532	#endif
42
43	niro	816	int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
44			int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
45	niro	532	{
46	niro	816	#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
47			char *token[4];
48			parser_t *parser = config_open("/proc/modules");
49			printf("%-24sSize Used by", "Module");
50	niro	532	check_tainted();
51
52	niro	816	if (ENABLE_FEATURE_2_4_MODULES
53			&& get_linux_version_code() < KERNEL_VERSION(2,6,0)
54			) {
55			while (config_read(parser, token, 4, 3, "# \t", PARSE_NORMAL)) {
56			if (token[3] != NULL && token[3][0] == '[') {
57			token[3]++;
58			token[3][strlen(token[3])-1] = '\0';
59			} else
60			token[3] = (char *) "";
61			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
62	niro	532	}
63	niro	816	} else {
64			while (config_read(parser, token, 4, 4, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
65			// N.B. token[3] is either '-' (module is not used by others)
66			// or comma-separated list ended by comma
67			// so trimming the trailing char is just what we need!
68			token[3][strlen(token[3])-1] = '\0';
69			printf("%-19s %8s %2s %s\n", token[0], token[1], token[2], token[3]);
70	niro	532	}
71			}
72	niro	816	if (ENABLE_FEATURE_CLEAN_UP)
73			config_close(parser);
74			#else
75			check_tainted();
76			xprint_and_close_file(xfopen_for_read("/proc/modules"));
77	niro	532	#endif
78			return EXIT_SUCCESS;
79			}