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/*
* Mini lsmod implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.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).
*
* Modified by Colin Watson <cjwatson@debian.org> based on lsmod from
* module-init-tools (Copyright (C) 2002 Rusty Russell, IBM Corporation)
* to support 2.6 kernels.
*
* 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"
#include "modutils.h"
#include "obj/module.h"
#ifdef CONFIG_FEATURE_2_4_MODULES
#ifdef CONFIG_FEATURE_CHECK_TAINTED_MODULE
static inline 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");
}
}
#else
static inline void check_tainted(void)
{
printf("\n");
}
#endif
static inline int query_2_4_modules(void)
{
#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, depsize, nmod, count, i, j;
#endif
check_tainted();
#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
if (getuid() != 0)
{
#endif
if (bb_xprint_file_by_name("/proc/modules") < 0) {
return 0;
}
return 1;
#ifdef CONFIG_FEATURE_QUERY_MODULE_INTERFACE
}
module_names = xmalloc(bufsize = 256);
if (my_query_module(NULL, QM_MODULES, (void **)&module_names, &bufsize, &nmod)) {
bb_perror_msg_and_die("QM_MODULES");
}
deps = xmalloc(depsize = 256);
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 */
bb_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;
}
bb_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;
#endif
}
#endif /* CONFIG_FEATURE_2_4_MODULES */
#ifdef CONFIG_FEATURE_2_6_MODULES
static inline int query_2_6_modules(void)
{
char line[4096];
FILE *file;
if ((file = fopen("/proc/modules", "r")) == NULL)
bb_perror_msg_and_die("Can't read /proc/modules");
while (fgets(line, sizeof(line), file)) {
char *mn, *size, *usecount, *deps;
mn = strtok(line, " \t");
size = strtok(NULL, " \t");
printf("%-20s%8s", mn, size);
usecount = strtok(NULL, " \t");
/* NULL if no module unloading support. */
if (usecount) {
deps = strtok(NULL, "\n");
if (!deps)
deps = "";
/* New-style has commas, or -. If so,
* truncate (other fields might follow). */
else if (strchr(deps, ',')) {
deps = strtok(deps, " \t");
/* Strip trailing comma. */
if (deps[strlen(deps) - 1] == ',')
deps[strlen(deps) - 1] = '\0';
} else if (deps[0] == '-' &&
(deps[1] == '\0' || isspace(deps[1])))
deps = "";
printf("%4s %s", usecount, deps);
}
putchar('\n');
}
fclose(file);
return 0;
}
#endif /* CONFIG_FEATURE_2_6_MODULES */
extern int lsmod_main(int argc, char **argv)
{
printf("Module Size Used by");
if (get_kernel_revision() > MODUTILS_MINIMAL_VERSION_2_6) {
#ifdef CONFIG_FEATURE_2_6_MODULES
return query_2_6_modules();
#else
return EXIT_FAILURE;
#endif
}
else if (get_kernel_revision() > MODUTILS_MINIMAL_VERSION_2_4) {
#ifdef CONFIG_FEATURE_2_4_MODULES
return query_2_4_modules();
#else
return EXIT_FAILURE;
#endif
}
return EXIT_FAILURE;
}
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