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mount_lfs.c revision 1.10 
      1 /*	$NetBSD: mount_lfs.c,v 1.10 2000/09/09 04:49:56 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 1.10 2000/09/09 04:49:56 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, cleaner_bytes;
     76 char *nsegs;
     77 
     78 int
     79 main(argc, argv)
     80 	int argc;
     81 	char *argv[];
     82 {
     83 	struct ufs_args args;
     84 	int ch, mntflags, noclean;
     85 	char *fs_name, *options;
     86 	const char *errcause;
     87 
     88 	options = NULL;
     89 	nsegs = "4";
     90 	mntflags = noclean = 0;
     91 	cleaner_bytes = 1;
     92 	while ((ch = getopt(argc, argv, "dN:no:s")) != -1)
     93 		switch (ch) {
     94 		case 'b':
     95 			cleaner_bytes = !cleaner_bytes;
     96 			break;
     97 		case 'd':
     98 			cleaner_debug = 1;
     99 			break;
    100 		case 'n':
    101 			noclean = 1;
    102 			break;
    103 		case 'N':
    104 			nsegs = optarg;
    105 			break;
    106 		case 'o':
    107 			getmntopts(optarg, mopts, &mntflags, 0);
    108 			break;
    109 		case 's':
    110 			short_rds = 1;
    111 			break;
    112 		case '?':
    113 		default:
    114 			usage();
    115 		}
    116 	argc -= optind;
    117 	argv += optind;
    118 
    119 	if (argc != 2)
    120 		usage();
    121 
    122 	args.fspec = argv[0];	/* the name of the device file */
    123 	fs_name = argv[1];	/* the mount point */
    124 
    125 #define DEFAULT_ROOTUID	-2
    126 	args.export.ex_root = DEFAULT_ROOTUID;
    127 	if (mntflags & MNT_RDONLY) {
    128 		args.export.ex_flags = MNT_EXRDONLY;
    129 		noclean = 1;
    130 	} else
    131 		args.export.ex_flags = 0;
    132 
    133 	if (mount(MOUNT_LFS, fs_name, mntflags, &args)) {
    134 		switch (errno) {
    135 		case EMFILE:
    136 			errcause = "mount table full";
    137 			break;
    138 		case EINVAL:
    139 			if (mntflags & MNT_UPDATE)
    140 				errcause =
    141 			    "specified device does not match mounted device";
    142 			else
    143 				errcause = "incorrect super block";
    144 			break;
    145 		default:
    146 			errcause = strerror(errno);
    147 			break;
    148 		}
    149 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    150 	}
    151 
    152 	if (!noclean)
    153 		invoke_cleaner(fs_name);
    154 		/* NOTREACHED */
    155 
    156 	exit(0);
    157 }
    158 
    159 void
    160 invoke_cleaner(name)
    161 	char *name;
    162 {
    163 	char *args[6], **ap = args;
    164 
    165 	/* Build the argument list. */
    166 	*ap++ = _PATH_LFS_CLEANERD;
    167 	if (cleaner_bytes)
    168 		*ap++ = "-b";
    169 	if (nsegs) {
    170 		*ap++ = "-n";
    171 		*ap++ = nsegs;
    172 	}
    173 	if (short_rds)
    174 		*ap++ = "-s";
    175 	if (cleaner_debug)
    176 		*ap++ = "-d";
    177 	*ap++ = name;
    178 	*ap = NULL;
    179 
    180 	execv(args[0], args);
    181 	err(1, "exec %s", _PATH_LFS_CLEANERD);
    182 }
    183 
    184 void
    185 usage()
    186 {
    187 	(void)fprintf(stderr,
    188 		"usage: mount_lfs [-dns] [-o options] special node\n");
    189 	exit(1);
    190 }
    191