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/* $OpenBSD: vnconfig.c,v 1.16 2004/09/14 22:35:51 deraadt Exp $ */
/*
* Copyright (c) 1993 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah $Hdr: vnconfig.c 1.1 93/12/15$
*
* @(#)vnconfig.c 8.1 (Berkeley) 12/15/93
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <dev/vndioctl.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#define DEFAULT_VND "vnd0"
#define VND_CONFIG 1
#define VND_UNCONFIG 2
#define VND_GET 3
int verbose = 0;
__dead void usage(void);
int config(char *, char *, int, char *);
int getinfo(const char *);
int
main(int argc, char **argv)
{
int ch, rv, action = VND_CONFIG;
char *key = NULL;
while ((ch = getopt(argc, argv, "cluvk")) != -1) {
switch (ch) {
case 'c':
action = VND_CONFIG;
break;
case 'l':
action = VND_GET;
break;
case 'u':
action = VND_UNCONFIG;
break;
case 'v':
verbose = 1;
break;
case 'k':
key = getpass("Encryption key: ");
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (action == VND_CONFIG && argc == 2)
rv = config(argv[0], argv[1], action, key);
else if (action == VND_UNCONFIG && argc == 1)
rv = config(argv[0], NULL, action, key);
else if (action == VND_GET)
rv = getinfo(argc ? argv[0] : NULL);
else
usage();
exit(rv);
}
int
getinfo(const char *vname)
{
int vd, print_all = 0;
struct vnd_user vnu;
if (vname == NULL) {
vname = DEFAULT_VND;
print_all = 1;
}
vd = opendev((char *)vname, O_RDONLY, OPENDEV_PART, NULL);
if (vd < 0)
err(1, "open: %s", vname);
vnu.vnu_unit = -1;
query:
if (ioctl(vd, VNDIOCGET, &vnu) == -1) {
close(vd);
return (!(errno == ENXIO && print_all));
}
fprintf(stdout, "vnd%d: ", vnu.vnu_unit);
if (!vnu.vnu_ino)
fprintf(stdout, "not in use\n");
else
fprintf(stdout, "covering %s on %s, inode %d\n", vnu.vnu_file,
devname(vnu.vnu_dev, S_IFBLK), vnu.vnu_ino);
if (print_all) {
vnu.vnu_unit++;
goto query;
}
close(vd);
return (0);
}
int
config(char *dev, char *file, int action, char *key)
{
struct vnd_ioctl vndio;
FILE *f;
char *rdev;
int rv;
if (opendev(dev, O_RDWR, OPENDEV_PART, &rdev) < 0)
err(4, "%s", rdev);
f = fopen(rdev, "rw");
if (f == NULL) {
warn("%s", rdev);
rv = -1;
goto out;
}
vndio.vnd_file = file;
vndio.vnd_key = (u_char *)key;
vndio.vnd_keylen = key == NULL ? 0 : strlen(key);
/*
* Clear (un-configure) the device
*/
if (action == VND_UNCONFIG) {
rv = ioctl(fileno(f), VNDIOCCLR, &vndio);
if (rv)
warn("VNDIOCCLR");
else if (verbose)
printf("%s: cleared\n", dev);
}
/*
* Configure the device
*/
if (action == VND_CONFIG) {
rv = ioctl(fileno(f), VNDIOCSET, &vndio);
if (rv)
warn("VNDIOCSET");
else if (verbose)
printf("%s: %llu bytes on %s\n", dev, vndio.vnd_size,
file);
}
fclose(f);
fflush(stdout);
out:
if (key)
memset(key, 0, strlen(key));
return (rv < 0);
}
__dead void
usage(void)
{
extern char *__progname;
(void)fprintf(stderr,
"usage: %s [-c] [-vk] rawdev regular-file\n"
" %s -u [-v] rawdev\n"
" %s -l [rawdev]\n", __progname, __progname, __progname);
exit(1);
}
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