freebsd-dev/sbin/mount/mount_fs.c
Craig Rodrigues 011b5486c5 Pass a char buffer parameter with name "errmsg" to nmount().
For filesystems which use vfs_mount_error() to log an error, this
char buffer will be populated with a string error message.
If nmount() fails, in addition to printing out strerror(errno),
print out the "errmsg" populated by vfs_mount_error().
2006-12-07 03:24:43 +00:00

139 lines
3.8 KiB
C

/*
* 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.
*/
#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
#if 0
static char sccsid[] = "@(#)mount_fs.c 8.6 (Berkeley) 4/26/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <err.h>
#include <getopt.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
#include "mntopts.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_END
};
static void
usage(void)
{
(void)fprintf(stderr,
"usage: mount [-t fstype] [-o options] target_fs mount_point\n");
exit(1);
}
int
mount_fs(const char *vfstype, int argc, char *argv[])
{
struct iovec *iov;
int iovlen;
int mntflags = 0;
int ch;
char *dev, *dir, mntpath[MAXPATHLEN];
char fstype[32];
char errmsg[255];
char *p, *val;
int ret;
strncpy(fstype, vfstype, sizeof(fstype));
memset(errmsg, 0, sizeof(errmsg));
getmnt_silent = 1;
iov = NULL;
iovlen = 0;
optind = optreset = 1; /* Reset for parse of new argv. */
while ((ch = getopt(argc, argv, "o:")) != -1) {
switch(ch) {
case 'o':
getmntopts(optarg, mopts, &mntflags, 0);
p = strchr(optarg, '=');
val = NULL;
if (p != NULL) {
*p = '\0';
val = p + 1;
}
build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
dev = argv[0];
dir = argv[1];
(void)checkpath(dir, mntpath);
(void)rmslashes(dev, dev);
build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
build_iovec(&iov, &iovlen, "from", dev, (size_t)-1);
build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
ret = nmount(iov, iovlen, mntflags);
if (ret < 0)
err(1, "%s %s", dev, errmsg);
return (ret);
}