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mount_lfs.c revision 1.9 
      1 /*	$NetBSD: mount_lfs.c,v 1.9 1999/12/08 22:39:25 perseant Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1993, 1994\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)mount_lfs.c	8.4 (Berkeley) 4/26/95";
     45 #else
     46 __RCSID("$NetBSD: mount_lfs.c,v 1.9 1999/12/08 22:39:25 perseant Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <sys/param.h>
     51 #include <sys/mount.h>
     52 
     53 #include <ufs/ufs/ufsmount.h>
     54 
     55 #include <err.h>
     56 #include <errno.h>
     57 #include <stdio.h>
     58 #include <stdlib.h>
     59 #include <string.h>
     60 #include <unistd.h>
     61 
     62 #include "mntopts.h"
     63 #include "pathnames.h"
     64 
     65 const struct mntopt mopts[] = {
     66 	MOPT_STDOPTS,
     67 	MOPT_UPDATE,
     68 	{ NULL }
     69 };
     70 
     71 int	main __P((int, char *[]));
     72 void	invoke_cleaner __P((char *));
     73 void	usage __P((void));
     74 
     75 int short_rds, cleaner_debug;
     76 
     77 int
     78 main(argc, argv)
     79 	int argc;
     80 	char *argv[];
     81 {
     82 	struct ufs_args args;
     83 	int ch, mntflags, noclean;
     84 	char *fs_name, *options;
     85 	const char *errcause;
     86 
     87 	options = NULL;
     88 	mntflags = noclean = 0;
     89 	while ((ch = getopt(argc, argv, "dno:s")) != -1)
     90 		switch (ch) {
     91 		case 'd':
     92 			cleaner_debug = 1;
     93 			break;
     94 		case 'n':
     95 			noclean = 1;
     96 			break;
     97 		case 'o':
     98 			getmntopts(optarg, mopts, &mntflags, 0);
     99 			break;
    100 		case 's':
    101 			short_rds = 1;
    102 			break;
    103 		case '?':
    104 		default:
    105 			usage();
    106 		}
    107 	argc -= optind;
    108 	argv += optind;
    109 
    110 	if (argc != 2)
    111 		usage();
    112 
    113 	args.fspec = argv[0];	/* the name of the device file */
    114 	fs_name = argv[1];	/* the mount point */
    115 
    116 #define DEFAULT_ROOTUID	-2
    117 	args.export.ex_root = DEFAULT_ROOTUID;
    118 	if (mntflags & MNT_RDONLY) {
    119 		args.export.ex_flags = MNT_EXRDONLY;
    120 		noclean = 1;
    121 	} else
    122 		args.export.ex_flags = 0;
    123 
    124 	if (mount(MOUNT_LFS, fs_name, mntflags, &args)) {
    125 		switch (errno) {
    126 		case EMFILE:
    127 			errcause = "mount table full";
    128 			break;
    129 		case EINVAL:
    130 			if (mntflags & MNT_UPDATE)
    131 				errcause =
    132 			    "specified device does not match mounted device";
    133 			else
    134 				errcause = "incorrect super block";
    135 			break;
    136 		default:
    137 			errcause = strerror(errno);
    138 			break;
    139 		}
    140 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    141 	}
    142 
    143 	if (!noclean)
    144 		invoke_cleaner(fs_name);
    145 		/* NOTREACHED */
    146 
    147 	exit(0);
    148 }
    149 
    150 void
    151 invoke_cleaner(name)
    152 	char *name;
    153 {
    154 	char *args[6], **ap = args;
    155 
    156 	/* Build the argument list. */
    157 	*ap++ = _PATH_LFS_CLEANERD;
    158 	if (short_rds)
    159 		*ap++ = "-s";
    160 	if (cleaner_debug)
    161 		*ap++ = "-d";
    162 	*ap++ = name;
    163 	*ap = NULL;
    164 
    165 	execv(args[0], args);
    166 	err(1, "exec %s", _PATH_LFS_CLEANERD);
    167 }
    168 
    169 void
    170 usage()
    171 {
    172 	(void)fprintf(stderr,
    173 		"usage: mount_lfs [-dns] [-o options] special node\n");
    174 	exit(1);
    175 }
    176