NetBSD/sbin/mount_nilfs/mount_nilfs.c

185 lines
4.7 KiB
C

/* $NetBSD: mount_nilfs.c,v 1.3 2016/02/21 22:51:29 christos Exp $ */
/*
* Copyright (c) 2008, 2009 Reinoud Zandijk
* 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 for the
* NetBSD Project. See http://www.NetBSD.org/ for
* information about NetBSD.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: mount_nilfs.c,v 1.3 2016/02/21 22:51:29 christos Exp $");
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <util.h>
/* mount specific options */
#include <fs/nilfs/nilfs_mount.h>
#include <mntopts.h>
#include "mountprog.h"
#include "mount_nilfs.h"
/* options to pass on to the `mount' call */
static const struct mntopt mopts[] = {
MOPT_STDOPTS, /* `normal' options */
MOPT_ASYNC, /* default */
MOPT_NOATIME, /* dont update access times */
MOPT_RELATIME, /* update access times on change*/
MOPT_UPDATE, /* not yet supported */
MOPT_GETARGS, /* printing */
MOPT_NULL,
};
/* prototypes */
static void usage(void) __dead;
/* code */
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-o options] [-c cpno] "
"[-t gmtoff] special node\n", getprogname());
exit(EXIT_FAILURE);
}
#ifndef MOUNT_NOMAIN
int
main(int argc, char **argv)
{
setprogname(argv[0]);
return mount_nilfs(argc, argv);
}
#endif
/* main routine */
void
mount_nilfs_parseargs(int argc, char **argv,
struct nilfs_args *args, int *mntflags,
char *canon_dev, char *canon_dir)
{
struct tm *tm;
time_t now;
int ch, set_gmtoff;
mntoptparse_t mp;
/* initialise */
(void)memset(args, 0, sizeof(*args));
set_gmtoff = *mntflags = 0;
while ((ch = getopt(argc, argv, "c:o:t:")) != -1) {
switch (ch) {
case 'o' :
/* process generic mount options */
mp = getmntopts(optarg, mopts, mntflags, 0);
if (mp == NULL)
err(EXIT_FAILURE, "getmntopts");
freemntopts(mp);
break;
case 'c' :
args->cpno = a_num(optarg, "checkpoint number");
break;
case 't' :
args->gmtoff = a_num(optarg, "gmtoff");
set_gmtoff = 1;
break;
default :
usage();
/* NOTREACHED */
}
}
if (optind + 2 != argc)
usage();
if (!set_gmtoff) {
/* use user's time zone as default */
(void)time(&now);
tm = localtime(&now);
args->gmtoff = tm->tm_gmtoff;
}
/* get device and directory specifier */
pathadj(argv[optind], canon_dev);
pathadj(argv[optind+1], canon_dir);
args->version = NILFSMNT_VERSION;
args->fspec = canon_dev;
}
int
mount_nilfs(int argc, char *argv[])
{
struct nilfs_args args;
char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
int mntflags;
mount_nilfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
/* mount it! :) */
if (mount(MOUNT_NILFS, canon_dir, mntflags, &args, sizeof args) == -1)
err(EXIT_FAILURE, "Cannot mount %s on %s", canon_dev,canon_dir);
if (mntflags & MNT_GETARGS) {
char buf[1024];
(void)snprintb(buf, sizeof(buf), NILFSMNT_BITS,
(uint64_t)args.nilfsmflags);
(void)printf("gmtoffset = %d, cpno = %"PRIu64", flags = %s\n",
args.gmtoff, args.cpno, buf);
}
return EXIT_SUCCESS;
}