f8bb0b05f3
some (hopefully) less offensive stupidity: If we detect that a user has loaded a module that fails to initialize itself correctly, panic. There really isn't a safe way to recover from something like this; we can't know that the module is bad until after the entry point is called, by which time it's too late to do anything about it.
179 lines
4.1 KiB
C
179 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 1993 Terrence R. Lambert.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Terrence R. Lambert.
|
|
* 4. The name Terrence R. Lambert may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id: modstat.c,v 1.2 1995/04/18 02:19:17 wpaul Exp $
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <err.h>
|
|
#include <string.h>
|
|
#include <a.out.h>
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/lkm.h>
|
|
#include <sys/file.h>
|
|
#include <sys/errno.h>
|
|
#include "pathnames.h"
|
|
|
|
void
|
|
usage()
|
|
{
|
|
|
|
fprintf(stderr, "usage:\n");
|
|
fprintf(stderr, "modstat [-i <module id>] [-n <module name>]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static char *type_names[] = {
|
|
"SYSCALL",
|
|
"VFS",
|
|
"DEV",
|
|
"STRMOD",
|
|
"EXEC",
|
|
"MISC"
|
|
};
|
|
|
|
int
|
|
dostat(devfd, modnum, modname)
|
|
int devfd;
|
|
int modnum;
|
|
char *modname;
|
|
{
|
|
struct lmc_stat sbuf;
|
|
|
|
if (modname != NULL)
|
|
strcpy(sbuf.name, modname);
|
|
|
|
sbuf.id = modnum;
|
|
|
|
if (ioctl(devfd, LMSTAT, &sbuf) == -1) {
|
|
switch (errno) {
|
|
case EINVAL: /* out of range */
|
|
return 2;
|
|
case ENOENT: /* no such entry */
|
|
return 1;
|
|
default: /* other error (EFAULT, etc) */
|
|
warn("LMSTAT");
|
|
return 4;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Decode this stat buffer...
|
|
*/
|
|
printf("%-7s %3d %3d %08x %04x %8x %3d %s\n",
|
|
type_names[sbuf.type],
|
|
sbuf.id, /* module id */
|
|
sbuf.offset, /* offset into modtype struct */
|
|
sbuf.area, /* address module loaded at */
|
|
sbuf.size, /* size in pages(K) */
|
|
sbuf.private, /* kernel address of private area */
|
|
sbuf.ver, /* Version; always 1 for now */
|
|
sbuf.name /* name from private area */
|
|
);
|
|
|
|
/*
|
|
* Done (success).
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
int devfd;
|
|
|
|
void
|
|
cleanup()
|
|
{
|
|
|
|
close(devfd);
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int c;
|
|
int modnum = -1;
|
|
char *modname = NULL;
|
|
|
|
while ((c = getopt(argc, argv, "i:n:")) != EOF) {
|
|
switch (c) {
|
|
case 'i':
|
|
modnum = atoi(optarg);
|
|
break; /* number */
|
|
case 'n':
|
|
modname = optarg;
|
|
break; /* name */
|
|
case '?':
|
|
usage();
|
|
default:
|
|
printf("default!\n");
|
|
break;
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 0)
|
|
usage();
|
|
|
|
/*
|
|
* Open the virtual device device driver for exclusive use (needed
|
|
* to ioctl() to retrive the loaded module(s) status).
|
|
*/
|
|
if ((devfd = open(_PATH_LKM, O_RDONLY, 0)) == -1)
|
|
err(2, _PATH_LKM);
|
|
|
|
atexit(cleanup);
|
|
|
|
printf("Type Id Off Loadaddr Size Info Rev Module Name\n");
|
|
|
|
/*
|
|
* Oneshot?
|
|
*/
|
|
if (modnum != -1 || modname != NULL) {
|
|
if (dostat(devfd, modnum, modname))
|
|
exit(3);
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* Start at 0 and work up until "EINVAL".
|
|
*/
|
|
for (modnum = 0; dostat(devfd, modnum, NULL) < 2; modnum++)
|
|
;
|
|
|
|
exit(0);
|
|
}
|