/* vi: set sw=4 ts=4: *//* * Mini lsmod implementation for busybox * * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org> * * Modified by Alcove, Julien Gaulmin <julien.gaulmin@alcove.fr> and * Nicolas Ferre <nicolas.ferre@alcove.fr> to support pre 2.1 kernels * (which lack the query_module() interface). * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */#include <stdlib.h>#include <stdio.h>#include <string.h>#include <stddef.h>#include <errno.h>#include <unistd.h>#include <dirent.h>#include <ctype.h>#include <assert.h>#include <getopt.h>#include <sys/utsname.h>#include <sys/file.h>#include "busybox.h"#define TAINT_FILENAME                  "/proc/sys/kernel/tainted"#define TAINT_PROPRIETORY_MODULE        (1<<0)#define TAINT_FORCED_MODULE             (1<<1)#define TAINT_UNSAFE_SMP                (1<<2)void check_tainted(void) {	int tainted;	FILE *f;	tainted = 0;	if ((f = fopen(TAINT_FILENAME, "r"))) {		fscanf(f, "%d", &tainted);		fclose(f);	}	if (f && tainted) {		printf("    Tainted: %c%c%c\n",				tainted & TAINT_PROPRIETORY_MODULE      ? 'P' : 'G',				tainted & TAINT_FORCED_MODULE           ? 'F' : ' ',				tainted & TAINT_UNSAFE_SMP              ? 'S' : ' ');	}	else {		printf("    Not tainted\n");	}}#ifdef BB_FEATURE_NEW_MODULE_INTERFACEstruct module_info{	unsigned long addr;	unsigned long size;	unsigned long flags;	long usecount;};int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret);/* Values for query_module's which.  */static const int QM_MODULES = 1;static const int QM_DEPS = 2;static const int QM_REFS = 3;static const int QM_SYMBOLS = 4;static const int QM_INFO = 5;/* Bits of module.flags.  */static const int NEW_MOD_RUNNING = 1;static const int NEW_MOD_DELETED = 2;static const int NEW_MOD_AUTOCLEAN = 4;static const int NEW_MOD_VISITED = 8;static const int NEW_MOD_USED_ONCE = 16;static const int NEW_MOD_INITIALIZING = 64;static int my_query_module(const char *name, int which, void **buf,		size_t *bufsize, size_t *ret){	int my_ret;	my_ret = query_module(name, which, *buf, *bufsize, ret);	if (my_ret == -1 && errno == ENOSPC) {		*buf = xrealloc(*buf, *ret);		*bufsize = *ret;		my_ret = query_module(name, which, *buf, *bufsize, ret);	}	return my_ret;}extern int lsmod_main(int argc, char **argv){	struct module_info info;	char *module_names, *mn, *deps, *dn;	size_t bufsize, depsize, nmod, count, i, j;	module_names = xmalloc(bufsize = 256);	if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize,				&nmod)) {		perror_msg_and_die("QM_MODULES");	}	deps = xmalloc(depsize = 256);	printf("Module                  Size  Used by");	check_tainted();	for (i = 0, mn = module_names; i < nmod; mn += strlen(mn) + 1, i++) {		if (query_module(mn, QM_INFO, &info, sizeof(info), &count)) {			if (errno == ENOENT) {				/* The module was removed out from underneath us. */				continue;			}			/* else choke */			perror_msg_and_die("module %s: QM_INFO", mn);		}		if (my_query_module(mn, QM_REFS, (void **)&deps, &depsize, &count)) {			if (errno == ENOENT) {				/* The module was removed out from underneath us. */				continue;			}			perror_msg_and_die("module %s: QM_REFS", mn);		}		printf("%-20s%8lu%4ld", mn, info.size, info.usecount);		if (info.flags & NEW_MOD_DELETED)			printf(" (deleted)");		else if (info.flags & NEW_MOD_INITIALIZING)			printf(" (initializing)");		else if (!(info.flags & NEW_MOD_RUNNING))			printf(" (uninitialized)");		else {			if (info.flags & NEW_MOD_AUTOCLEAN)				printf(" (autoclean) ");			if (!(info.flags & NEW_MOD_USED_ONCE))				printf(" (unused)");		}		if (count) printf(" [");		for (j = 0, dn = deps; j < count; dn += strlen(dn) + 1, j++) {			printf("%s%s", dn, (j==count-1)? "":" ");		}		if (count) printf("]");		printf("\n");	}	return( 0);}#else /*BB_FEATURE_OLD_MODULE_INTERFACE*/extern int lsmod_main(int argc, char **argv){	int fd, i;	char line[128];	printf("Module                  Size  Used by");	check_tainted();	fflush(stdout);	if ((fd = open("/proc/modules", O_RDONLY)) >= 0 ) {		while ((i = read(fd, line, sizeof(line))) > 0) {			write(fileno(stdout), line, i);		}		close(fd);		return 0;	}	perror_msg_and_die("/proc/modules");	return 1;}#endif /*BB_FEATURE_OLD_MODULE_INTERFACE*/