NetBSD/sbin/mount_filecore/mount_filecore.c

192 lines
4.9 KiB
C

/* $NetBSD: mount_filecore.c,v 1.1 1998/08/14 03:38:51 mark Exp $ */
/*
* Copyright (c) 1998 Andrew McMurry
* Copyright (c) 1992, 1993, 1994 The Regents of the University of California.
* All rights reserved.
*
* This code is contains code contributed to the NetBSD project by
* Christopher G. Demetriou
*
* 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.
*
* mount_filecore.c 1.1 1998/6/26
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
The Regents of the University of California.\n\
Copyright (c) 1998 Andrew McMurry\n\
All rights reserved.\n");
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <filecorefs/filecore_mount.h>
#include "mntopts.h"
const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_UPDATE,
{ NULL }
};
int main __P((int, char *[]));
void usage __P((void));
gid_t a_gid __P((char *));
uid_t a_uid __P((char *));
int
main(argc, argv)
int argc;
char **argv;
{
struct filecore_args args;
int ch, mntflags, opts, useuid;
char *dev, *dir;
mntflags = opts = 0;
useuid = 1;
args.uid = 0;
args.gid = 0;
while ((ch = getopt(argc, argv, "anRfu:g:o:")) != -1)
switch (ch) {
case 'a':
args.flags |= FILECOREMNT_ALLACCESS;
break;
case 'n':
args.flags |= FILECOREMNT_OWNACCESS;
break;
case 'R':
args.flags |= FILECOREMNT_OWNREAD;
break;
case 'f':
args.flags |= FILECOREMNT_FILETYPE;
break;
case 'u':
args.uid = a_uid(optarg);
useuid = 0;
break;
case 'g':
args.gid = a_gid(optarg);
useuid = 0;
break;
case 'o':
getmntopts(optarg, mopts, &mntflags, 0);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
dev = argv[0];
dir = argv[1];
#define DEFAULT_ROOTUID -2
/*
* FILECORE filesystems are not writeable.
*/
mntflags |= MNT_RDONLY;
if (useuid) args.flags |= FILECOREMNT_USEUID;
args.export.ex_flags = MNT_EXRDONLY;
args.fspec = dev;
args.export.ex_root = DEFAULT_ROOTUID;
args.flags = opts;
if (mount(MOUNT_FILECORE, dir, mntflags, &args) < 0)
err(1, "%s", "");
exit(0);
}
void
usage()
{
(void)fprintf(stderr,
"usage: mount_filecore [-o options] special node\n");
exit(1);
}
gid_t
a_gid(s)
char *s;
{
struct group *gr;
char *gname;
gid_t gid;
if ((gr = getgrnam(s)) != NULL)
gid = gr->gr_gid;
else {
for (gname = s; *s && isdigit(*s); ++s);
if (!*s)
gid = atoi(gname);
else
errx(1, "unknown group id: %s", gname);
}
return (gid);
}
uid_t
a_uid(s)
char *s;
{
struct passwd *pw;
char *uname;
uid_t uid;
if ((pw = getpwnam(s)) != NULL)
uid = pw->pw_uid;
else {
for (uname = s; *s && isdigit(*s); ++s);
if (!*s)
uid = atoi(uname);
else
errx(1, "unknown user id: %s", uname);
}
return (uid);
}