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mount_filecore.c revision 1.5 
      1 /* $NetBSD: mount_filecore.c,v 1.5 2002/09/21 18:43:34 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998 Andrew McMurry
      5  * Copyright (c) 1992, 1993, 1994 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is contains code contributed to the NetBSD project by
      9  * Christopher G. Demetriou
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *      mount_filecore.c	1.1	1998/6/26
     40  */
     41 
     42 #include <sys/cdefs.h>
     43 #ifndef lint
     44 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
     45         The Regents of the University of California.\n\
     46 	Copyright (c) 1998 Andrew McMurry\n\
     47 	All rights reserved.\n");
     48 #endif /* not lint */
     49 
     50 #include <sys/param.h>
     51 #include <sys/mount.h>
     52 
     53 #include <ctype.h>
     54 #include <err.h>
     55 #include <grp.h>
     56 #include <pwd.h>
     57 #include <stdlib.h>
     58 #include <stdio.h>
     59 #include <string.h>
     60 #include <unistd.h>
     61 #include <util.h>
     62 
     63 #include <filecorefs/filecore_mount.h>
     64 
     65 #include "mntopts.h"
     66 #include <fattr.h>
     67 
     68 static const struct mntopt mopts[] = {
     69 	MOPT_STDOPTS,
     70 	MOPT_UPDATE,
     71 	MOPT_GETARGS,
     72 	{ NULL }
     73 };
     74 
     75 int	main __P((int, char *[]));
     76 int	mount_filecore __P((int argc, char **argv));
     77 static void	usage __P((void));
     78 
     79 #ifndef MOUNT_NOMAIN
     80 int
     81 main(argc, argv)
     82 	int argc;
     83 	char **argv;
     84 {
     85 	return mount_filecore(argc, argv);
     86 }
     87 #endif
     88 
     89 int
     90 mount_filecore(argc, argv)
     91 	int argc;
     92 	char **argv;
     93 {
     94 	struct filecore_args args;
     95 	int ch, mntflags, opts, useuid;
     96 	char *dev, *dir;
     97 
     98 	mntflags = opts = 0;
     99 	useuid = 1;
    100 	args.uid = 0;
    101 	args.gid = 0;
    102 
    103 	while ((ch = getopt(argc, argv, "anRfu:g:o:")) != -1)
    104 		switch (ch) {
    105 		case 'a':
    106 			args.flags |= FILECOREMNT_ALLACCESS;
    107 			break;
    108 		case 'n':
    109 			args.flags |= FILECOREMNT_OWNACCESS;
    110 			break;
    111 		case 'R':
    112 			args.flags |= FILECOREMNT_OWNREAD;
    113 			break;
    114 		case 'f':
    115 			args.flags |= FILECOREMNT_FILETYPE;
    116 			break;
    117                 case 'u':
    118                         args.uid = a_uid(optarg);
    119 			useuid = 0;
    120                         break;
    121                 case 'g':
    122                         args.gid = a_gid(optarg);
    123 			useuid = 0;
    124                         break;
    125 		case 'o':
    126 			getmntopts(optarg, mopts, &mntflags, 0);
    127 			break;
    128 		case '?':
    129 		default:
    130 			usage();
    131 		}
    132 	argc -= optind;
    133 	argv += optind;
    134 
    135 	if (argc != 2)
    136 		usage();
    137 
    138 	dev = argv[0];
    139 	dir = argv[1];
    140 
    141 #define DEFAULT_ROOTUID	-2
    142 	/*
    143 	 * FILECORE filesystems are not writeable.
    144 	 */
    145 	mntflags |= MNT_RDONLY;
    146 	if (useuid) args.flags |= FILECOREMNT_USEUID;
    147 	args.export.ex_flags = MNT_EXRDONLY;
    148 	args.fspec = dev;
    149 	args.export.ex_root = DEFAULT_ROOTUID;
    150 	args.flags = opts;
    151 
    152 	if (mount(MOUNT_FILECORE, dir, mntflags, &args) < 0)
    153 		err(1, "%s on %s", dev, dir);
    154 	if (mntflags & MNT_GETARGS) {
    155 		char buf[1024];
    156 		(void)snprintb(buf, sizeof(buf), FILECOREMNT_BITS, args.flags);
    157 		printf("uid=%d, gid=%d, flags=%s\n", args.uid, args.gid, buf);
    158 	}
    159 	exit(0);
    160 }
    161 
    162 static void
    163 usage()
    164 {
    165 	(void)fprintf(stderr,
    166 		"usage: mount_filecore [-o options] special node\n");
    167 	exit(1);
    168 }
    169