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/* $OpenBSD: modstat.c,v 1.17 2002/01/09 18:19:28 ericj Exp $ */
/*
* 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.
*
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/mount.h>
#include <sys/lkm.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>
#include <fcntl.h>
#include <string.h>
#include <a.out.h>
#include <errno.h>
#include "pathnames.h"
#define POINTERSIZE ((int)(2 * sizeof(void*)))
static char *type_names[] = {
"SYSCALL",
"VFS",
"DEV",
"EXEC",
"MISC"
};
static int devfd;
static void
usage()
{
extern char *__progname;
(void)fprintf(stderr, "usage: %s [-i id] [-n name]\n", __progname);
exit(1);
}
static int
dostat(int devfd, int modnum, char *modname)
{
char name[MAXLKMNAME];
struct lmc_stat sbuf;
bzero(&name, sizeof name);
bzero(&sbuf, sizeof sbuf);
sbuf.id = modnum;
sbuf.name = name;
if (modname != NULL) {
if (strlen(modname) >= sizeof(name))
return 4;
strlcpy(sbuf.name, modname, sizeof(name));
}
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 %3ld %0*lx %04lx %0*lx %3ld %s\n",
type_names[sbuf.type], sbuf.id, sbuf.offset, POINTERSIZE,
(long)sbuf.area, (long)sbuf.size, POINTERSIZE,
(long)sbuf.private, (long)sbuf.ver, sbuf.name);
return 0;
}
int
main(argc, argv)
int argc;
char *argv[];
{
int c, modnum = -1;
char *modname = NULL;
char *endptr;
while ((c = getopt(argc, argv, "i:n:")) != -1) {
switch (c) {
case 'i':
modnum = (int)strtol(optarg, &endptr, 0);
if (modnum < 0 || modnum > INT_MAX || *endptr != '\0')
errx(1, "%s: not a valid number", optarg);
modnum = atoi(optarg);
break;
case 'n':
modname = optarg;
break;
default:
usage();
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)) == -1)
err(2, _PATH_LKM);
setegid(getgid());
setgid(getgid());
printf("Type Id Off %-*s Size %-*s Rev Module Name\n",
POINTERSIZE, "Loadaddr", POINTERSIZE, "Info");
if (modnum != -1 || modname != NULL) {
if (dostat(devfd, modnum, modname))
exit(3);
exit(0);
}
/* Start at 0 and work up until we receive EINVAL. */
for (modnum = 0; dostat(devfd, modnum, NULL) < 2; modnum++)
;
exit(0);
}
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