164 lines
4.5 KiB
C
164 lines
4.5 KiB
C
/*
|
|
* Copyright (c) 1990, 1992 Jan-Simon Pendry
|
|
* Copyright (c) 1992, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed 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.
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1992, 1993, 1994\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
|
|
#include "mntopts.h"
|
|
|
|
static struct mntopt mopts[] = {
|
|
MOPT_STDOPTS,
|
|
{ NULL }
|
|
};
|
|
|
|
static char *fsname;
|
|
static volatile sig_atomic_t caughtsig;
|
|
|
|
static void usage(void) __dead2;
|
|
|
|
static void
|
|
catchsig(int s)
|
|
{
|
|
caughtsig = 1;
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int ch, mntflags;
|
|
char mntpath[MAXPATHLEN];
|
|
struct iovec iov[4];
|
|
int error;
|
|
|
|
/*
|
|
* XXX
|
|
* mount(8) calls the mount programs with an argv[0] which is
|
|
* /just/ the file system name. So, if there is no underscore
|
|
* in argv[0], we assume that we are being called from mount(8)
|
|
* and that argv[0] is thus the name of the file system type.
|
|
*/
|
|
fsname = strrchr(argv[0], '_');
|
|
if (fsname) {
|
|
if (strcmp(fsname, "_std") == 0)
|
|
errx(EX_USAGE, "argv[0] must end in _fsname");
|
|
fsname++;
|
|
} else {
|
|
fsname = argv[0];
|
|
}
|
|
|
|
mntflags = 0;
|
|
while ((ch = getopt(argc, argv, "o:")) != -1)
|
|
switch (ch) {
|
|
case 'o':
|
|
getmntopts(optarg, mopts, &mntflags, 0);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 2)
|
|
usage();
|
|
|
|
/* resolve the mountpoint with realpath(3) */
|
|
(void)checkpath(argv[1], mntpath);
|
|
|
|
iov[0].iov_base = "fstype";
|
|
iov[0].iov_len = sizeof("fstype");
|
|
iov[1].iov_base = fsname;
|
|
iov[1].iov_len = strlen(iov[1].iov_base) + 1;
|
|
iov[2].iov_base = "fspath";
|
|
iov[2].iov_len = sizeof("fspath");
|
|
iov[3].iov_base = mntpath;
|
|
iov[3].iov_len = strlen(mntpath) + 1;
|
|
|
|
/*
|
|
* nmount(2) would kill us with SIGSYS if the kernel doesn't have it.
|
|
* This design bug is inconvenient. We must catch the signal and not
|
|
* just ignore it because of a plain bug: nmount(2) would return
|
|
* EINVAL instead of the correct ENOSYS if the kernel doesn't have it
|
|
* and we don't let the signal kill us. EINVAL is too ambiguous.
|
|
* This bug in 4.4BSD-Lite1 was fixed in 4.4BSD-Lite2 but is still in
|
|
* FreeBSD-5.0.
|
|
*/
|
|
signal(SIGSYS, catchsig);
|
|
error = nmount(iov, 4, mntflags);
|
|
signal(SIGSYS, SIG_DFL);
|
|
|
|
/*
|
|
* Try with the old mount syscall in the case
|
|
* this file system has not been converted yet,
|
|
* or the user didn't recompile his kernel.
|
|
*/
|
|
if (error && (errno == EOPNOTSUPP || errno == ENOSYS || caughtsig))
|
|
error = mount(fsname, mntpath, mntflags, NULL);
|
|
|
|
if (error)
|
|
err(EX_OSERR, NULL);
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: mount_%s [-o options] what_to_mount mount_point\n",
|
|
fsname);
|
|
exit(EX_USAGE);
|
|
}
|