mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-30 12:04:07 +00:00
126 lines
3.2 KiB
C
126 lines
3.2 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$Id$";
|
|
#endif /* not lint */
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/lkm.h>
|
|
#include <sys/file.h>
|
|
#include <sys/errno.h>
|
|
#include "pathnames.h"
|
|
|
|
void
|
|
usage()
|
|
{
|
|
|
|
fprintf(stderr, "usage: modunload [-i <module id>] [-n <module name>]\n");
|
|
exit(1);
|
|
}
|
|
|
|
int devfd;
|
|
|
|
void
|
|
cleanup()
|
|
{
|
|
|
|
close(devfd);
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int c;
|
|
int modnum = -1;
|
|
char *modname = NULL;
|
|
struct lmc_unload ulbuf;
|
|
|
|
while ((c = getopt(argc, argv, "i:n:")) != -1) {
|
|
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 || (modnum == -1 && modname == NULL))
|
|
usage();
|
|
|
|
|
|
/*
|
|
* Open the virtual device device driver for exclusive use (needed
|
|
* to ioctl() to retrieve the loaded module(s) status).
|
|
*/
|
|
if ((devfd = open(_PATH_LKM, O_RDWR, 0)) == -1)
|
|
err(2, _PATH_LKM);
|
|
|
|
atexit(cleanup);
|
|
|
|
/*
|
|
* Unload the requested module.
|
|
*/
|
|
ulbuf.name = modname;
|
|
ulbuf.id = modnum;
|
|
|
|
if (ioctl(devfd, LMUNLOAD, &ulbuf) == -1) {
|
|
switch (errno) {
|
|
case EINVAL: /* out of range */
|
|
errx(3, "id out of range");
|
|
case ENOENT: /* no such entry */
|
|
errx(3, "no such module");
|
|
default: /* other error (EFAULT, etc) */
|
|
err(5, "LMUNLOAD");
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|