NetBSD/sbin/mount_udf/mount_udf.c

213 lines
5.5 KiB
C

/* $NetBSD: mount_udf.c,v 1.14 2016/02/21 22:51:30 christos Exp $ */
/*
* Copyright (c) 2006 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_udf.c,v 1.14 2016/02/21 22:51:30 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/udf/udf_mount.h>
#include <mntopts.h>
#include "mountprog.h"
#include "mount_udf.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 [-g gid] [-o options] [-s session] "
"[-t gmtoff] [-u uid] special node\n", getprogname());
exit(EXIT_FAILURE);
}
#ifndef MOUNT_NOMAIN
int
main(int argc, char **argv)
{
setprogname(argv[0]);
return mount_udf(argc, argv);
}
#endif
/* main routine */
void
mount_udf_parseargs(int argc, char **argv,
struct udf_args *args, int *mntflags,
char *canon_dev, char *canon_dir)
{
struct tm *tm;
time_t now;
uid_t anon_uid, nobody_uid;
gid_t anon_gid, nobody_gid;
int ch, set_gmtoff;
uint32_t sector_size;
mntoptparse_t mp;
/* initialise */
(void)memset(args, 0, sizeof(*args));
set_gmtoff = *mntflags = 0;
sector_size = 0;
/* get nobody */
nobody_uid = anon_uid = a_uid("nobody");
nobody_gid = anon_gid = a_gid("nobody");
/* NEVER EVER allow nobody_uid:nobody_gid to be 0:0 */
assert(nobody_uid != 0);
assert(nobody_gid != 0);
while ((ch = getopt(argc, argv, "cg:o:s:t:u:")) != -1) {
switch (ch) {
case 'c' :
args->udfmflags |= UDFMNT_CLOSESESSION;
break;
case 'g' :
/* convert groupname or numeric equiv. */
anon_gid = a_gid(optarg);
break;
case 'u' :
/* convert username or numeric equiv. */
anon_uid = a_uid(optarg);
break;
case 'o' :
/* process generic mount options */
mp = getmntopts(optarg, mopts, mntflags, 0);
if (mp == NULL)
err(EXIT_FAILURE, "getmntopts");
freemntopts(mp);
break;
case 's' :
args->sessionnr = a_num(optarg, "session 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 = UDFMNT_VERSION;
args->fspec = canon_dev;
args->anon_uid = anon_uid;
args->anon_gid = anon_gid;
args->nobody_uid = nobody_uid;
args->nobody_gid = nobody_gid;
args->sector_size = sector_size; /* invalid */
}
int
mount_udf(int argc, char *argv[])
{
struct udf_args args;
char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
int mntflags;
mount_udf_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
/* mount it! :) */
if (mount(MOUNT_UDF, 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), UDFMNT_BITS,
(uint64_t)args.udfmflags);
(void)printf("gmtoffset=%d, sessionnr=%d, flags=%s\n",
args.gmtoff, args.sessionnr, buf);
}
return EXIT_SUCCESS;
}