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/* $OpenBSD: mount_tcfs.c,v 1.4 2000/06/21 05:28:25 fgsch Exp $ */
/*
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software donated to Berkeley by
* Jan-Simon Pendry.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#include <sys/param.h>
#include <sys/mount.h>
#include <miscfs/tcfs/tcfs.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mntopts.h"
#define ALTF_LABEL 0x1
#define ALTF_CIPHER 0x2
const struct mntopt mopts[] = {
MOPT_STDOPTS,
{ "label", 0, ALTF_LABEL, 1},
{ "cipher", 0, ALTF_CIPHER, 1},
{ NULL }
};
int subdir __P((const char *, const char *));
void tcfs_usage __P((void));
int
main(argc, argv)
int argc;
char * const argv[];
{
struct tcfs_args args;
int ch, mntflags, altflags;
char target[MAXPATHLEN];
char *fs_name, *errcause;
mntflags = 0;
altflags = 0;
args.cipher_num = -1;
while ((ch = getopt(argc, argv, "o:")) != -1)
switch(ch) {
case 'o':
getmntopts(optarg, mopts, &mntflags, &altflags);
if (altflags & ALTF_CIPHER) {
char *p, *cipherfield;
cipherfield = strstr(optarg, "cipher=") + 7;
args.cipher_num = strtol(cipherfield, &p, 0);
if (cipherfield == p)
args.cipher_num = -1;
}
altflags = 0;
break;
case '?':
default:
tcfs_usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
tcfs_usage();
if (realpath(argv[0], target) == 0)
err(1, "%s", target);
if (subdir(target, argv[1]) || subdir(argv[1], target))
errx(1, "%s (%s) and %s are not distinct paths",
argv[0], target, argv[1]);
if (args.cipher_num == -1)
errx(1, "cipher number not found for filesystem %s\n",
argv[1]);
args.target = target;
fs_name = argv[1];
if (mount(MOUNT_TCFS, fs_name, mntflags, &args) < 0) {
switch (errno) {
case EMFILE:
errcause = "mount table full";
break;
case EOPNOTSUPP:
errcause = "filesystem not supported by kernel";
break;
default:
errcause = strerror(errno);
break;
}
errx(1, "%s on %s: %s", argv[0], fs_name, errcause);
}
exit(0);
}
int
subdir(p, dir)
const char *p;
const char *dir;
{
int l;
l = strlen(dir);
if (l <= 1)
return (1);
if ((strncmp(p, dir, l) == 0) && (p[l] == '/' || p[l] == '\0'))
return (1);
return (0);
}
void
tcfs_usage()
{
(void)fprintf(stderr, "usage: mount_tcfs [-o options] path node\n");
exit(1);
}
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