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/* vi: set sw=4 ts=4: */
/*
* Mini lsmod implementation for busybox
*
* Copyright (C) 1999,2000 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <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 "busybox.h"
#include <stdlib.h>
#include <stdio.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>
#if !defined(BB_FEATURE_LSMOD_NEW_KERNEL) && !defined(BB_FEATURE_LSMOD_OLD_KERNEL)
#error "Must have ether BB_FEATURE_LSMOD_NEW_KERNEL or BB_FEATURE_LSMOD_OLD_KERNEL defined"
#endif
#ifdef BB_FEATURE_LSMOD_NEW_KERNEL
struct 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. */
#define QM_MODULES 1
#define QM_DEPS 2
#define QM_REFS 3
#define QM_SYMBOLS 4
#define QM_INFO 5
/* Bits of module.flags. */
#define NEW_MOD_RUNNING 1
#define NEW_MOD_DELETED 2
#define NEW_MOD_AUTOCLEAN 4
#define NEW_MOD_VISITED 8
#define NEW_MOD_USED_ONCE 16
#define NEW_MOD_INITIALIZING 64
extern int lsmod_main(int argc, char **argv)
{
struct module_info info;
char *module_names, *mn, *deps, *dn;
size_t bufsize, nmod, count, i, j;
module_names = xmalloc(bufsize = 256);
deps = xmalloc(bufsize);
if (query_module(NULL, QM_MODULES, module_names, bufsize, &nmod)) {
perror_msg_and_die("QM_MODULES");
}
printf("Module Size Used by\n");
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);
}
while (query_module(mn, QM_REFS, deps, bufsize, &count)) {
if (errno == ENOENT) {
/* The module was removed out from underneath us. */
continue;
}
if (errno != ENOSPC) {
error_msg_and_die("module %s: QM_REFS", mn);
}
deps = xrealloc(deps, bufsize = count);
}
printf("%-20s%8lu%4ld ", mn, info.size, info.usecount);
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("] ");
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)");
}
printf("\n");
}
return( 0);
}
#else /*BB_FEATURE_LSMOD_OLD_KERNEL*/
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#endif
extern int lsmod_main(int argc, char **argv)
{
int fd, i;
char line[128];
puts("Module Size Used by");
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_LSMOD_OLD_KERNEL*/
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