bsdlabel.c revision 26542 
1/*
2 * Copyright (c) 1987, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Symmetric Computer Systems.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *		$Id$
37 */
38
39#ifndef lint
40static char copyright[] =
41"@(#) Copyright (c) 1987, 1993\n\
42	The Regents of the University of California.  All rights reserved.\n";
43#endif /* not lint */
44
45#ifndef lint
46static char sccsid[] = "@(#)disklabel.c	8.2 (Berkeley) 1/7/94";
47/* from static char sccsid[] = "@(#)disklabel.c	1.2 (Symmetric) 11/28/85"; */
48#endif /* not lint */
49
50#include <sys/param.h>
51#include <sys/signal.h>
52#include <sys/errno.h>
53#include <sys/file.h>
54#include <sys/ioctl.h>
55#include <sys/stat.h>
56#include <sys/wait.h>
57#define DKTYPENAMES
58#include <sys/disklabel.h>
59#include <ufs/ffs/fs.h>
60#include <unistd.h>
61#include <string.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <signal.h>
65#include <stdarg.h>
66#include <ctype.h>
67#include <err.h>
68#include "pathnames.h"
69
70/*
71 * Disklabel: read and write disklabels.
72 * The label is usually placed on one of the first sectors of the disk.
73 * Many machines also place a bootstrap in the same area,
74 * in which case the label is embedded in the bootstrap.
75 * The bootstrap source must leave space at the proper offset
76 * for the label on such machines.
77 */
78
79#ifdef tahoe
80#define RAWPARTITION	'a'
81#else
82#define RAWPARTITION	'c'
83#endif
84
85#ifndef BBSIZE
86#define	BBSIZE	8192			/* size of boot area, with label */
87#endif
88
89#ifdef tahoe
90#define	NUMBOOT	0
91#else
92#if defined(hp300) || defined(hp800)
93#define	NUMBOOT	1
94#else
95#define	NUMBOOT	2
96#endif
97#endif
98
99void	makelabel	__P((char *, char *, struct disklabel *));
100int	writelabel	__P((int, char *, struct disklabel *));
101void	l_perror	__P((char *));
102struct disklabel * readlabel __P((int));
103struct disklabel * makebootarea __P((char *, struct disklabel *, int));
104void	display		__P((FILE *, struct disklabel *));
105int	edit		__P((struct disklabel *, int));
106int	editit		__P((void));
107char *	skip		__P((char *));
108char *	word		__P((char *));
109int	getasciilabel	__P((FILE *, struct disklabel *));
110int	checklabel	__P((struct disklabel *));
111void	setbootflag	__P((struct disklabel *));
112void	Warning		(char *, ...);
113void	usage		__P((void));
114extern	u_short dkcksum __P((struct disklabel *));
115struct disklabel * getvirginlabel __P((void));
116
117#define	DEFEDITOR	_PATH_VI
118#define	streq(a,b)	(strcmp(a,b) == 0)
119
120char	*dkname;
121char	*specname;
122char	tmpfil[] = _PATH_TMP;
123
124extern	int errno;
125char	namebuf[BBSIZE], *np = namebuf;
126struct	disklabel lab;
127struct	disklabel *readlabel(), *makebootarea();
128char	bootarea[BBSIZE];
129
130#if NUMBOOT > 0
131int	installboot;	/* non-zero if we should install a boot program */
132char	*bootbuf;	/* pointer to buffer with remainder of boot prog */
133int	bootsize;	/* size of remaining boot program */
134char	*xxboot;	/* primary boot */
135char	*bootxx;	/* secondary boot */
136char	boot0[MAXPATHLEN];
137char	boot1[MAXPATHLEN];
138#endif
139
140enum	{
141	UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT
142} op = UNSPEC;
143
144int	rflag;
145
146#ifdef DEBUG
147int	debug;
148#define OPTIONS	"BNRWb:ders:w"
149#else
150#define OPTIONS	"BNRWb:ers:w"
151#endif
152
153int
154main(argc, argv)
155	int argc;
156	char *argv[];
157{
158	extern char *optarg;
159	extern int optind;
160	register struct disklabel *lp;
161	FILE *t;
162	int ch, f, flag, error = 0;
163	char *name = 0;
164
165	while ((ch = getopt(argc, argv, OPTIONS)) != -1)
166		switch (ch) {
167#if NUMBOOT > 0
168			case 'B':
169				++installboot;
170				break;
171			case 'b':
172				xxboot = optarg;
173				break;
174#if NUMBOOT > 1
175			case 's':
176				bootxx = optarg;
177				break;
178#endif
179#endif
180			case 'N':
181				if (op != UNSPEC)
182					usage();
183				op = NOWRITE;
184				break;
185			case 'R':
186				if (op != UNSPEC)
187					usage();
188				op = RESTORE;
189				break;
190			case 'W':
191				if (op != UNSPEC)
192					usage();
193				op = WRITEABLE;
194				break;
195			case 'e':
196				if (op != UNSPEC)
197					usage();
198				op = EDIT;
199				break;
200			case 'r':
201				++rflag;
202				break;
203			case 'w':
204				if (op != UNSPEC)
205					usage();
206				op = WRITE;
207				break;
208#ifdef DEBUG
209			case 'd':
210				debug++;
211				break;
212#endif
213			case '?':
214			default:
215				usage();
216		}
217	argc -= optind;
218	argv += optind;
219#if NUMBOOT > 0
220	if (installboot) {
221		rflag++;
222		if (op == UNSPEC)
223			op = WRITEBOOT;
224	} else {
225		if (op == UNSPEC)
226			op = READ;
227		xxboot = bootxx = 0;
228	}
229#else
230	if (op == UNSPEC)
231		op = READ;
232#endif
233	if (argc < 1)
234		usage();
235
236	dkname = argv[0];
237	if (dkname[0] != '/') {
238		(void)sprintf(np, "%sr%s%c", _PATH_DEV, dkname, RAWPARTITION);
239		specname = np;
240		np += strlen(specname) + 1;
241	} else
242		specname = dkname;
243	f = open(specname, op == READ ? O_RDONLY : O_RDWR);
244	if (f < 0 && errno == ENOENT && dkname[0] != '/') {
245		(void)sprintf(specname, "%sr%s", _PATH_DEV, dkname);
246		np = namebuf + strlen(specname) + 1;
247		f = open(specname, op == READ ? O_RDONLY : O_RDWR);
248	}
249	if (f < 0)
250		err(4, "%s", specname);
251
252	switch(op) {
253
254	case EDIT:
255		if (argc != 1)
256			usage();
257		lp = readlabel(f);
258		error = edit(lp, f);
259		break;
260
261	case NOWRITE:
262		flag = 0;
263		if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
264			err(4, "ioctl DIOCWLABEL");
265		break;
266
267	case READ:
268		if (argc != 1)
269			usage();
270		lp = readlabel(f);
271		display(stdout, lp);
272		error = checklabel(lp);
273		break;
274
275	case RESTORE:
276#if NUMBOOT > 0
277		if (installboot && argc == 3) {
278			makelabel(argv[2], 0, &lab);
279			argc--;
280		}
281#endif
282		if (argc != 2)
283			usage();
284		lp = makebootarea(bootarea, &lab, f);
285		if (!(t = fopen(argv[1], "r")))
286			err(4, "%s", argv[1]);
287		if (getasciilabel(t, lp))
288			error = writelabel(f, bootarea, lp);
289		break;
290
291	case WRITE:
292		if (argc == 3) {
293			name = argv[2];
294			argc--;
295		}
296		if (argc != 2)
297			usage();
298		makelabel(argv[1], name, &lab);
299		lp = makebootarea(bootarea, &lab, f);
300		*lp = lab;
301		if (checklabel(lp) == 0)
302			error = writelabel(f, bootarea, lp);
303		break;
304
305	case WRITEABLE:
306		flag = 1;
307		if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
308			err(4, "ioctl DIOCWLABEL");
309		break;
310
311#if NUMBOOT > 0
312	case WRITEBOOT:
313	{
314		struct disklabel tlab;
315
316		lp = readlabel(f);
317		tlab = *lp;
318		if (argc == 2)
319			makelabel(argv[1], 0, &lab);
320		lp = makebootarea(bootarea, &lab, f);
321		*lp = tlab;
322		if (checklabel(lp) == 0)
323			error = writelabel(f, bootarea, lp);
324		break;
325	}
326#endif
327	}
328	exit(error);
329}
330
331/*
332 * Construct a prototype disklabel from /etc/disktab.  As a side
333 * effect, set the names of the primary and secondary boot files
334 * if specified.
335 */
336void
337makelabel(type, name, lp)
338	char *type, *name;
339	register struct disklabel *lp;
340{
341	register struct disklabel *dp;
342
343	if (strcmp(type, "auto") == 0)
344		dp = getvirginlabel();
345	else
346		dp = getdiskbyname(type);
347	if (dp == NULL) {
348		fprintf(stderr, "%s: unknown disk type\n", type);
349		exit(1);
350	}
351	*lp = *dp;
352#if NUMBOOT > 0
353	/*
354	 * Set bootstrap name(s).
355	 * 1. If set from command line, use those,
356	 * 2. otherwise, check if disktab specifies them (b0 or b1),
357	 * 3. otherwise, makebootarea() will choose ones based on the name
358	 *    of the disk special file. E.g. /dev/ra0 -> raboot, bootra
359	 */
360	if (!xxboot && lp->d_boot0) {
361		if (*lp->d_boot0 != '/')
362			(void)sprintf(boot0, "%s/%s",
363				      _PATH_BOOTDIR, lp->d_boot0);
364		else
365			(void)strcpy(boot0, lp->d_boot0);
366		xxboot = boot0;
367	}
368#if NUMBOOT > 1
369	if (!bootxx && lp->d_boot1) {
370		if (*lp->d_boot1 != '/')
371			(void)sprintf(boot1, "%s/%s",
372				      _PATH_BOOTDIR, lp->d_boot1);
373		else
374			(void)strcpy(boot1, lp->d_boot1);
375		bootxx = boot1;
376	}
377#endif
378#endif
379	/* d_packname is union d_boot[01], so zero */
380	bzero(lp->d_packname, sizeof(lp->d_packname));
381	if (name)
382		(void)strncpy(lp->d_packname, name, sizeof(lp->d_packname));
383}
384
385int
386writelabel(f, boot, lp)
387	int f;
388	char *boot;
389	register struct disklabel *lp;
390{
391#ifdef vax
392	register int i;
393#endif
394	int flag;
395
396	setbootflag(lp);
397	lp->d_magic = DISKMAGIC;
398	lp->d_magic2 = DISKMAGIC;
399	lp->d_checksum = 0;
400	lp->d_checksum = dkcksum(lp);
401	if (rflag) {
402		/*
403		 * First set the kernel disk label,
404		 * then write a label to the raw disk.
405		 * If the SDINFO ioctl fails because it is unimplemented,
406		 * keep going; otherwise, the kernel consistency checks
407		 * may prevent us from changing the current (in-core)
408		 * label.
409		 */
410		if (ioctl(f, DIOCSDINFO, lp) < 0 &&
411		    errno != ENODEV && errno != ENOTTY) {
412			l_perror("ioctl DIOCSDINFO");
413			return (1);
414		}
415		(void)lseek(f, (off_t)0, SEEK_SET);
416		/*
417		 * write enable label sector before write (if necessary),
418		 * disable after writing.
419		 */
420		flag = 1;
421		if (ioctl(f, DIOCWLABEL, &flag) < 0)
422			perror("ioctl DIOCWLABEL");
423		if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
424			perror("write");
425			return (1);
426		}
427#if NUMBOOT > 0
428		/*
429		 * Output the remainder of the disklabel
430		 */
431		if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
432			perror("write");
433			return(1);
434		}
435#endif
436		flag = 0;
437		(void) ioctl(f, DIOCWLABEL, &flag);
438	} else if (ioctl(f, DIOCWDINFO, lp) < 0) {
439		l_perror("ioctl DIOCWDINFO");
440		return (1);
441	}
442#ifdef vax
443	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
444		daddr_t alt;
445
446		alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
447		for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
448			(void)lseek(f, (off_t)((alt + i) * lp->d_secsize),
449			    SEEK_SET);
450			if (write(f, boot, lp->d_secsize) < lp->d_secsize) {
451				int oerrno = errno;
452				fprintf(stderr, "alternate label %d ", i/2);
453				errno = oerrno;
454				perror("write");
455			}
456		}
457	}
458#endif
459	return (0);
460}
461
462void
463l_perror(s)
464	char *s;
465{
466	int saverrno = errno;
467
468	fprintf(stderr, "disklabel: %s: ", s);
469
470	switch (saverrno) {
471
472	case ESRCH:
473		fprintf(stderr, "No disk label on disk;\n");
474		fprintf(stderr,
475		    "use \"disklabel -r\" to install initial label\n");
476		break;
477
478	case EINVAL:
479		fprintf(stderr, "Label magic number or checksum is wrong!\n");
480		fprintf(stderr, "(disklabel or kernel is out of date?)\n");
481		break;
482
483	case EBUSY:
484		fprintf(stderr, "Open partition would move or shrink\n");
485		break;
486
487	case EXDEV:
488		fprintf(stderr,
489	"Labeled partition or 'a' partition must start at beginning of disk\n");
490		break;
491
492	default:
493		errno = saverrno;
494		perror((char *)NULL);
495		break;
496	}
497}
498
499/*
500 * Fetch disklabel for disk.
501 * Use ioctl to get label unless -r flag is given.
502 */
503struct disklabel *
504readlabel(f)
505	int f;
506{
507	register struct disklabel *lp;
508
509	if (rflag) {
510		if (read(f, bootarea, BBSIZE) < BBSIZE)
511			err(4, "%s", specname);
512		for (lp = (struct disklabel *)bootarea;
513		    lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
514		    lp = (struct disklabel *)((char *)lp + 16))
515			if (lp->d_magic == DISKMAGIC &&
516			    lp->d_magic2 == DISKMAGIC)
517				break;
518		if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) ||
519		    lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC ||
520		    dkcksum(lp) != 0) {
521			fprintf(stderr,
522	"Bad pack magic number (label is damaged, or pack is unlabeled)\n");
523			/* lp = (struct disklabel *)(bootarea + LABELOFFSET); */
524			exit (1);
525		}
526	} else {
527		lp = &lab;
528		if (ioctl(f, DIOCGDINFO, lp) < 0)
529			err(4, "ioctl DIOCGDINFO");
530	}
531	return (lp);
532}
533
534/*
535 * Construct a bootarea (d_bbsize bytes) in the specified buffer ``boot''
536 * Returns a pointer to the disklabel portion of the bootarea.
537 */
538struct disklabel *
539makebootarea(boot, dp, f)
540	char *boot;
541	register struct disklabel *dp;
542	int f;
543{
544	struct disklabel *lp;
545	register char *p;
546	int b;
547#if NUMBOOT > 0
548	char *dkbasename;
549#if NUMBOOT == 1
550	struct stat sb;
551#endif
552#ifdef __i386__
553	char *tmpbuf;
554	int i, found;
555#endif /* i386 */
556#endif
557
558	/* XXX */
559	if (dp->d_secsize == 0) {
560		dp->d_secsize = DEV_BSIZE;
561		dp->d_bbsize = BBSIZE;
562	}
563	lp = (struct disklabel *)
564		(boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET);
565	bzero((char *)lp, sizeof *lp);
566#if NUMBOOT > 0
567	/*
568	 * If we are not installing a boot program but we are installing a
569	 * label on disk then we must read the current bootarea so we don't
570	 * clobber the existing boot.
571	 */
572	if (!installboot) {
573		if (rflag) {
574			if (read(f, boot, BBSIZE) < BBSIZE)
575				err(4, "%s", specname);
576			bzero((char *)lp, sizeof *lp);
577		}
578		return (lp);
579	}
580	/*
581	 * We are installing a boot program.  Determine the name(s) and
582	 * read them into the appropriate places in the boot area.
583	 */
584	if (!xxboot || !bootxx) {
585		dkbasename = np;
586		if ((p = rindex(dkname, '/')) == NULL)
587			p = dkname;
588		else
589			p++;
590		while (*p && !isdigit(*p))
591			*np++ = *p++;
592		*np++ = '\0';
593
594		if (!xxboot) {
595			(void)sprintf(np, "%s/%sboot",
596				      _PATH_BOOTDIR, dkbasename);
597			if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
598				dkbasename++;
599			xxboot = np;
600			(void)sprintf(xxboot, "%s/%sboot",
601				      _PATH_BOOTDIR, dkbasename);
602			np += strlen(xxboot) + 1;
603		}
604#if NUMBOOT > 1
605		if (!bootxx) {
606			(void)sprintf(np, "%s/boot%s",
607				      _PATH_BOOTDIR, dkbasename);
608			if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
609				dkbasename++;
610			bootxx = np;
611			(void)sprintf(bootxx, "%s/boot%s",
612				      _PATH_BOOTDIR, dkbasename);
613			np += strlen(bootxx) + 1;
614		}
615#endif
616	}
617#ifdef DEBUG
618	if (debug)
619		fprintf(stderr, "bootstraps: xxboot = %s, bootxx = %s\n",
620			xxboot, bootxx ? bootxx : "NONE");
621#endif
622
623	/*
624	 * Strange rules:
625	 * 1. One-piece bootstrap (hp300/hp800)
626	 *	up to d_bbsize bytes of ``xxboot'' go in bootarea, the rest
627	 *	is remembered and written later following the bootarea.
628	 * 2. Two-piece bootstraps (vax/i386?/mips?)
629	 *	up to d_secsize bytes of ``xxboot'' go in first d_secsize
630	 *	bytes of bootarea, remaining d_bbsize-d_secsize filled
631	 *	from ``bootxx''.
632	 */
633	b = open(xxboot, O_RDONLY);
634	if (b < 0)
635		err(4, "%s", xxboot);
636#if NUMBOOT > 1
637#ifdef __i386__
638	/*
639	 * XXX Botch alert.
640	 * The i386 has the so-called fdisk table embedded into the
641	 * primary bootstrap.  We take care to not clobber it, but
642	 * only if it does already contain some data.  (Otherwise,
643	 * the xxboot provides a template.)
644	 */
645	if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0)
646		err(4, "%s", xxboot);
647	memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize);
648#endif /* i386 */
649	if (read(b, boot, (int)dp->d_secsize) < 0)
650		err(4, "%s", xxboot);
651	(void)close(b);
652#ifdef __i386__
653	for (i = DOSPARTOFF, found = 0;
654	     !found && i < DOSPARTOFF + NDOSPART*sizeof(struct dos_partition);
655	     i++)
656		found = tmpbuf[i] != 0;
657	if (found)
658		memcpy((void *)&boot[DOSPARTOFF],
659		       (void *)&tmpbuf[DOSPARTOFF],
660		       NDOSPART * sizeof(struct dos_partition));
661	free(tmpbuf);
662#endif /* i386 */
663	b = open(bootxx, O_RDONLY);
664	if (b < 0)
665		err(4, "%s", bootxx);
666	if (read(b, &boot[dp->d_secsize],
667		 (int)(dp->d_bbsize-dp->d_secsize)) < 0)
668		err(4, "%s", bootxx);
669#else
670	if (read(b, boot, (int)dp->d_bbsize) < 0)
671		err(4, "%s", xxboot);
672	(void)fstat(b, &sb);
673	bootsize = (int)sb.st_size - dp->d_bbsize;
674	if (bootsize > 0) {
675		/* XXX assume d_secsize is a power of two */
676		bootsize = (bootsize + dp->d_secsize-1) & ~(dp->d_secsize-1);
677		bootbuf = (char *)malloc((size_t)bootsize);
678		if (bootbuf == 0)
679			err(4, "%s", xxboot);
680		if (read(b, bootbuf, bootsize) < 0) {
681			free(bootbuf);
682			err(4, "%s", xxboot);
683		}
684	}
685#endif
686	(void)close(b);
687#endif
688	/*
689	 * Make sure no part of the bootstrap is written in the area
690	 * reserved for the label.
691	 */
692	for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel); p++)
693		if (*p) {
694			fprintf(stderr,
695			    "Bootstrap doesn't leave room for disk label\n");
696			exit(2);
697		}
698	return (lp);
699}
700
701void
702display(f, lp)
703	FILE *f;
704	register struct disklabel *lp;
705{
706	register int i, j;
707	register struct partition *pp;
708
709	fprintf(f, "# %s:\n", specname);
710	if ((unsigned) lp->d_type < DKMAXTYPES)
711		fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
712	else
713		fprintf(f, "type: %d\n", lp->d_type);
714	fprintf(f, "disk: %.*s\n", (int)sizeof(lp->d_typename),
715		lp->d_typename);
716	fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname),
717		lp->d_packname);
718	fprintf(f, "flags:");
719	if (lp->d_flags & D_REMOVABLE)
720		fprintf(f, " removeable");
721	if (lp->d_flags & D_ECC)
722		fprintf(f, " ecc");
723	if (lp->d_flags & D_BADSECT)
724		fprintf(f, " badsect");
725	fprintf(f, "\n");
726	fprintf(f, "bytes/sector: %ld\n", lp->d_secsize);
727	fprintf(f, "sectors/track: %ld\n", lp->d_nsectors);
728	fprintf(f, "tracks/cylinder: %ld\n", lp->d_ntracks);
729	fprintf(f, "sectors/cylinder: %ld\n", lp->d_secpercyl);
730	fprintf(f, "cylinders: %ld\n", lp->d_ncylinders);
731	fprintf(f, "sectors/unit: %ld\n", lp->d_secperunit);
732	fprintf(f, "rpm: %d\n", lp->d_rpm);
733	fprintf(f, "interleave: %d\n", lp->d_interleave);
734	fprintf(f, "trackskew: %d\n", lp->d_trackskew);
735	fprintf(f, "cylinderskew: %d\n", lp->d_cylskew);
736	fprintf(f, "headswitch: %ld\t\t# milliseconds\n", lp->d_headswitch);
737	fprintf(f, "track-to-track seek: %ld\t# milliseconds\n",
738		lp->d_trkseek);
739	fprintf(f, "drivedata: ");
740	for (i = NDDATA - 1; i >= 0; i--)
741		if (lp->d_drivedata[i])
742			break;
743	if (i < 0)
744		i = 0;
745	for (j = 0; j <= i; j++)
746		fprintf(f, "%ld ", lp->d_drivedata[j]);
747	fprintf(f, "\n\n%d partitions:\n", lp->d_npartitions);
748	fprintf(f,
749	    "#        size   offset    fstype   [fsize bsize bps/cpg]\n");
750	pp = lp->d_partitions;
751	for (i = 0; i < lp->d_npartitions; i++, pp++) {
752		if (pp->p_size) {
753			fprintf(f, "  %c: %8ld %8ld  ", 'a' + i,
754			   pp->p_size, pp->p_offset);
755			if ((unsigned) pp->p_fstype < FSMAXTYPES)
756				fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
757			else
758				fprintf(f, "%8d", pp->p_fstype);
759			switch (pp->p_fstype) {
760
761			case FS_UNUSED:				/* XXX */
762				fprintf(f, "    %5ld %5ld %5.5s ",
763				    pp->p_fsize, pp->p_fsize * pp->p_frag, "");
764				break;
765
766			case FS_BSDFFS:
767				fprintf(f, "    %5ld %5ld %5d ",
768				    pp->p_fsize, pp->p_fsize * pp->p_frag,
769				    pp->p_cpg);
770				break;
771
772			case FS_BSDLFS:
773				fprintf(f, "    %5ld %5ld %5d",
774				    pp->p_fsize, pp->p_fsize * pp->p_frag,
775				    pp->p_cpg);
776				break;
777
778			default:
779				fprintf(f, "%20.20s", "");
780				break;
781			}
782			fprintf(f, "\t# (Cyl. %4ld",
783			    pp->p_offset / lp->d_secpercyl);
784			if (pp->p_offset % lp->d_secpercyl)
785			    putc('*', f);
786			else
787			    putc(' ', f);
788			fprintf(f, "- %ld",
789			    (pp->p_offset +
790			    pp->p_size + lp->d_secpercyl - 1) /
791			    lp->d_secpercyl - 1);
792			if (pp->p_size % lp->d_secpercyl)
793			    putc('*', f);
794			fprintf(f, ")\n");
795		}
796	}
797	fflush(f);
798}
799
800int
801edit(lp, f)
802	struct disklabel *lp;
803	int f;
804{
805	register int c, fd;
806	struct disklabel label;
807	FILE *fp;
808
809	if ((fd = mkstemp(tmpfil)) == -1 ||
810	    (fp = fdopen(fd, "w")) == NULL) {
811		fprintf(stderr, "%s: Can't create\n", tmpfil);
812		return (1);
813	}
814	display(fp, lp);
815	fclose(fp);
816	for (;;) {
817		if (!editit())
818			break;
819		fp = fopen(tmpfil, "r");
820		if (fp == NULL) {
821			fprintf(stderr, "%s: Can't reopen for reading\n",
822				tmpfil);
823			break;
824		}
825		bzero((char *)&label, sizeof(label));
826		if (getasciilabel(fp, &label)) {
827			*lp = label;
828			if (writelabel(f, bootarea, lp) == 0) {
829				fclose(fp);
830				(void) unlink(tmpfil);
831				return (0);
832			}
833		}
834		fclose(fp);
835		printf("re-edit the label? [y]: "); fflush(stdout);
836		c = getchar();
837		if (c != EOF && c != (int)'\n')
838			while (getchar() != (int)'\n')
839				;
840		if  (c == (int)'n')
841			break;
842	}
843	(void) unlink(tmpfil);
844	return (1);
845}
846
847int
848editit()
849{
850	register int pid, xpid;
851	int stat, omask;
852	extern char *getenv();
853
854	omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
855	while ((pid = fork()) < 0) {
856		extern int errno;
857
858		if (errno == EPROCLIM) {
859			fprintf(stderr, "You have too many processes\n");
860			return(0);
861		}
862		if (errno != EAGAIN) {
863			perror("fork");
864			return(0);
865		}
866		sleep(1);
867	}
868	if (pid == 0) {
869		register char *ed;
870
871		sigsetmask(omask);
872		setgid(getgid());
873		setuid(getuid());
874		if ((ed = getenv("EDITOR")) == (char *)0)
875			ed = DEFEDITOR;
876		execlp(ed, ed, tmpfil, 0);
877		perror(ed);
878		exit(1);
879	}
880	while ((xpid = wait(&stat)) >= 0)
881		if (xpid == pid)
882			break;
883	sigsetmask(omask);
884	return(!stat);
885}
886
887char *
888skip(cp)
889	register char *cp;
890{
891
892	while (*cp != '\0' && isspace(*cp))
893		cp++;
894	if (*cp == '\0' || *cp == '#')
895		return ((char *)NULL);
896	return (cp);
897}
898
899char *
900word(cp)
901	register char *cp;
902{
903	register char c;
904
905	while (*cp != '\0' && !isspace(*cp) && *cp != '#')
906		cp++;
907	if ((c = *cp) != '\0') {
908		*cp++ = '\0';
909		if (c != '#')
910			return (skip(cp));
911	}
912	return ((char *)NULL);
913}
914
915/*
916 * Read an ascii label in from fd f,
917 * in the same format as that put out by display(),
918 * and fill in lp.
919 */
920int
921getasciilabel(f, lp)
922	FILE	*f;
923	register struct disklabel *lp;
924{
925	register char **cpp, *cp;
926	register struct partition *pp;
927	char *tp, *s, line[BUFSIZ];
928	int v, lineno = 0, errors = 0;
929
930	lp->d_bbsize = BBSIZE;				/* XXX */
931	lp->d_sbsize = SBSIZE;				/* XXX */
932	while (fgets(line, sizeof(line) - 1, f)) {
933		lineno++;
934		if ((cp = index(line,'\n')) != 0)
935			*cp = '\0';
936		cp = skip(line);
937		if (cp == NULL)
938			continue;
939		tp = index(cp, ':');
940		if (tp == NULL) {
941			fprintf(stderr, "line %d: syntax error\n", lineno);
942			errors++;
943			continue;
944		}
945		*tp++ = '\0', tp = skip(tp);
946		if (streq(cp, "type")) {
947			if (tp == NULL)
948				tp = "unknown";
949			cpp = dktypenames;
950			for (; cpp < &dktypenames[DKMAXTYPES]; cpp++)
951				if ((s = *cpp) && streq(s, tp)) {
952					lp->d_type = cpp - dktypenames;
953					goto next;
954				}
955			v = atoi(tp);
956			if ((unsigned)v >= DKMAXTYPES)
957				fprintf(stderr, "line %d:%s %d\n", lineno,
958				    "Warning, unknown disk type", v);
959			lp->d_type = v;
960			continue;
961		}
962		if (streq(cp, "flags")) {
963			for (v = 0; (cp = tp) && *cp != '\0';) {
964				tp = word(cp);
965				if (streq(cp, "removeable"))
966					v |= D_REMOVABLE;
967				else if (streq(cp, "ecc"))
968					v |= D_ECC;
969				else if (streq(cp, "badsect"))
970					v |= D_BADSECT;
971				else {
972					fprintf(stderr,
973					    "line %d: %s: bad flag\n",
974					    lineno, cp);
975					errors++;
976				}
977			}
978			lp->d_flags = v;
979			continue;
980		}
981		if (streq(cp, "drivedata")) {
982			register int i;
983
984			for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) {
985				lp->d_drivedata[i++] = atoi(cp);
986				tp = word(cp);
987			}
988			continue;
989		}
990		if (sscanf(cp, "%d partitions", &v) == 1) {
991			if (v == 0 || (unsigned)v > MAXPARTITIONS) {
992				fprintf(stderr,
993				    "line %d: bad # of partitions\n", lineno);
994				lp->d_npartitions = MAXPARTITIONS;
995				errors++;
996			} else
997				lp->d_npartitions = v;
998			continue;
999		}
1000		if (tp == NULL)
1001			tp = "";
1002		if (streq(cp, "disk")) {
1003			strncpy(lp->d_typename, tp, sizeof (lp->d_typename));
1004			continue;
1005		}
1006		if (streq(cp, "label")) {
1007			strncpy(lp->d_packname, tp, sizeof (lp->d_packname));
1008			continue;
1009		}
1010		if (streq(cp, "bytes/sector")) {
1011			v = atoi(tp);
1012			if (v <= 0 || (v % 512) != 0) {
1013				fprintf(stderr,
1014				    "line %d: %s: bad sector size\n",
1015				    lineno, tp);
1016				errors++;
1017			} else
1018				lp->d_secsize = v;
1019			continue;
1020		}
1021		if (streq(cp, "sectors/track")) {
1022			v = atoi(tp);
1023			if (v <= 0) {
1024				fprintf(stderr, "line %d: %s: bad %s\n",
1025				    lineno, tp, cp);
1026				errors++;
1027			} else
1028				lp->d_nsectors = v;
1029			continue;
1030		}
1031		if (streq(cp, "sectors/cylinder")) {
1032			v = atoi(tp);
1033			if (v <= 0) {
1034				fprintf(stderr, "line %d: %s: bad %s\n",
1035				    lineno, tp, cp);
1036				errors++;
1037			} else
1038				lp->d_secpercyl = v;
1039			continue;
1040		}
1041		if (streq(cp, "tracks/cylinder")) {
1042			v = atoi(tp);
1043			if (v <= 0) {
1044				fprintf(stderr, "line %d: %s: bad %s\n",
1045				    lineno, tp, cp);
1046				errors++;
1047			} else
1048				lp->d_ntracks = v;
1049			continue;
1050		}
1051		if (streq(cp, "cylinders")) {
1052			v = atoi(tp);
1053			if (v <= 0) {
1054				fprintf(stderr, "line %d: %s: bad %s\n",
1055				    lineno, tp, cp);
1056				errors++;
1057			} else
1058				lp->d_ncylinders = v;
1059			continue;
1060		}
1061		if (streq(cp, "sectors/unit")) {
1062			v = atoi(tp);
1063			if (v <= 0) {
1064				fprintf(stderr, "line %d: %s: bad %s\n",
1065				    lineno, tp, cp);
1066				errors++;
1067			} else
1068				lp->d_secperunit = v;
1069			continue;
1070		}
1071		if (streq(cp, "rpm")) {
1072			v = atoi(tp);
1073			if (v <= 0) {
1074				fprintf(stderr, "line %d: %s: bad %s\n",
1075				    lineno, tp, cp);
1076				errors++;
1077			} else
1078				lp->d_rpm = v;
1079			continue;
1080		}
1081		if (streq(cp, "interleave")) {
1082			v = atoi(tp);
1083			if (v <= 0) {
1084				fprintf(stderr, "line %d: %s: bad %s\n",
1085				    lineno, tp, cp);
1086				errors++;
1087			} else
1088				lp->d_interleave = v;
1089			continue;
1090		}
1091		if (streq(cp, "trackskew")) {
1092			v = atoi(tp);
1093			if (v < 0) {
1094				fprintf(stderr, "line %d: %s: bad %s\n",
1095				    lineno, tp, cp);
1096				errors++;
1097			} else
1098				lp->d_trackskew = v;
1099			continue;
1100		}
1101		if (streq(cp, "cylinderskew")) {
1102			v = atoi(tp);
1103			if (v < 0) {
1104				fprintf(stderr, "line %d: %s: bad %s\n",
1105				    lineno, tp, cp);
1106				errors++;
1107			} else
1108				lp->d_cylskew = v;
1109			continue;
1110		}
1111		if (streq(cp, "headswitch")) {
1112			v = atoi(tp);
1113			if (v < 0) {
1114				fprintf(stderr, "line %d: %s: bad %s\n",
1115				    lineno, tp, cp);
1116				errors++;
1117			} else
1118				lp->d_headswitch = v;
1119			continue;
1120		}
1121		if (streq(cp, "track-to-track seek")) {
1122			v = atoi(tp);
1123			if (v < 0) {
1124				fprintf(stderr, "line %d: %s: bad %s\n",
1125				    lineno, tp, cp);
1126				errors++;
1127			} else
1128				lp->d_trkseek = v;
1129			continue;
1130		}
1131		if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') {
1132			unsigned part = *cp - 'a';
1133
1134			if (part > lp->d_npartitions) {
1135				fprintf(stderr,
1136				    "line %d: bad partition name\n", lineno);
1137				errors++;
1138				continue;
1139			}
1140			pp = &lp->d_partitions[part];
1141#define NXTNUM(n) { \
1142	if (tp == NULL) { \
1143		fprintf(stderr, "line %d: too few numeric fields\n", lineno); \
1144		errors++; \
1145		break; \
1146	} else { \
1147		cp = tp, tp = word(cp); \
1148		if (tp == NULL) \
1149			tp = cp; \
1150		(n) = atoi(cp); \
1151	} \
1152     }
1153
1154			NXTNUM(v);
1155			if (v < 0) {
1156				fprintf(stderr,
1157				    "line %d: %s: bad partition size\n",
1158				    lineno, cp);
1159				errors++;
1160			} else
1161				pp->p_size = v;
1162			NXTNUM(v);
1163			if (v < 0) {
1164				fprintf(stderr,
1165				    "line %d: %s: bad partition offset\n",
1166				    lineno, cp);
1167				errors++;
1168			} else
1169				pp->p_offset = v;
1170			cp = tp, tp = word(cp);
1171			cpp = fstypenames;
1172			for (; cpp < &fstypenames[FSMAXTYPES]; cpp++)
1173				if ((s = *cpp) && streq(s, cp)) {
1174					pp->p_fstype = cpp - fstypenames;
1175					goto gottype;
1176				}
1177			if (isdigit(*cp))
1178				v = atoi(cp);
1179			else
1180				v = FSMAXTYPES;
1181			if ((unsigned)v >= FSMAXTYPES) {
1182				fprintf(stderr, "line %d: %s %s\n", lineno,
1183				    "Warning, unknown filesystem type", cp);
1184				v = FS_UNUSED;
1185			}
1186			pp->p_fstype = v;
1187	gottype:
1188
1189			switch (pp->p_fstype) {
1190
1191			case FS_UNUSED:				/* XXX */
1192				NXTNUM(pp->p_fsize);
1193				if (pp->p_fsize == 0)
1194					break;
1195				NXTNUM(v);
1196				pp->p_frag = v / pp->p_fsize;
1197				break;
1198
1199			case FS_BSDFFS:
1200				NXTNUM(pp->p_fsize);
1201				if (pp->p_fsize == 0)
1202					break;
1203				NXTNUM(v);
1204				pp->p_frag = v / pp->p_fsize;
1205				NXTNUM(pp->p_cpg);
1206				break;
1207
1208			case FS_BSDLFS:
1209				NXTNUM(pp->p_fsize);
1210				if (pp->p_fsize == 0)
1211					break;
1212				NXTNUM(v);
1213				pp->p_frag = v / pp->p_fsize;
1214				NXTNUM(pp->p_cpg);
1215				break;
1216
1217			default:
1218				break;
1219			}
1220			continue;
1221		}
1222		fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
1223		    lineno, cp);
1224		errors++;
1225	next:
1226		;
1227	}
1228	errors += checklabel(lp);
1229	return (errors == 0);
1230}
1231
1232/*
1233 * Check disklabel for errors and fill in
1234 * derived fields according to supplied values.
1235 */
1236int
1237checklabel(lp)
1238	register struct disklabel *lp;
1239{
1240	register struct partition *pp;
1241	int i, errors = 0;
1242	char part;
1243
1244	if (lp->d_secsize == 0) {
1245		fprintf(stderr, "sector size %ld\n", lp->d_secsize);
1246		return (1);
1247	}
1248	if (lp->d_nsectors == 0) {
1249		fprintf(stderr, "sectors/track %ld\n", lp->d_nsectors);
1250		return (1);
1251	}
1252	if (lp->d_ntracks == 0) {
1253		fprintf(stderr, "tracks/cylinder %ld\n", lp->d_ntracks);
1254		return (1);
1255	}
1256	if  (lp->d_ncylinders == 0) {
1257		fprintf(stderr, "cylinders/unit %ld\n", lp->d_ncylinders);
1258		errors++;
1259	}
1260	if (lp->d_rpm == 0)
1261		Warning("revolutions/minute %d", lp->d_rpm);
1262	if (lp->d_secpercyl == 0)
1263		lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
1264	if (lp->d_secperunit == 0)
1265		lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders;
1266	if (lp->d_bbsize == 0) {
1267		fprintf(stderr, "boot block size %ld\n", lp->d_bbsize);
1268		errors++;
1269	} else if (lp->d_bbsize % lp->d_secsize)
1270		Warning("boot block size %% sector-size != 0");
1271	if (lp->d_sbsize == 0) {
1272		fprintf(stderr, "super block size %ld\n", lp->d_sbsize);
1273		errors++;
1274	} else if (lp->d_sbsize % lp->d_secsize)
1275		Warning("super block size %% sector-size != 0");
1276	if (lp->d_npartitions > MAXPARTITIONS)
1277		Warning("number of partitions (%d) > MAXPARTITIONS (%d)",
1278		    lp->d_npartitions, MAXPARTITIONS);
1279	for (i = 0; i < lp->d_npartitions; i++) {
1280		part = 'a' + i;
1281		pp = &lp->d_partitions[i];
1282		if (pp->p_size == 0 && pp->p_offset != 0)
1283			Warning("partition %c: size 0, but offset %d",
1284			    part, pp->p_offset);
1285#ifdef notdef
1286		if (pp->p_size % lp->d_secpercyl)
1287			Warning("partition %c: size %% cylinder-size != 0",
1288			    part);
1289		if (pp->p_offset % lp->d_secpercyl)
1290			Warning("partition %c: offset %% cylinder-size != 0",
1291			    part);
1292#endif
1293		if (pp->p_offset > lp->d_secperunit) {
1294			fprintf(stderr,
1295			    "partition %c: offset past end of unit\n", part);
1296			errors++;
1297		}
1298		if (pp->p_offset + pp->p_size > lp->d_secperunit) {
1299			fprintf(stderr,
1300			"partition %c: partition extends past end of unit\n",
1301			    part);
1302			errors++;
1303		}
1304	}
1305	for (; i < MAXPARTITIONS; i++) {
1306		part = 'a' + i;
1307		pp = &lp->d_partitions[i];
1308		if (pp->p_size || pp->p_offset)
1309			Warning("unused partition %c: size %d offset %d",
1310			    'a' + i, pp->p_size, pp->p_offset);
1311	}
1312	return (errors);
1313}
1314
1315/*
1316 * When operating on a "virgin" disk, try getting an initial label
1317 * from the associated device driver.  This might work for all device
1318 * drivers that are able to fetch some initial device parameters
1319 * without even having access to a (BSD) disklabel, like SCSI disks,
1320 * most IDE drives, or vn devices.
1321 *
1322 * The device name must be given in its "canonical" form.
1323 */
1324struct disklabel *
1325getvirginlabel(void)
1326{
1327	static struct disklabel lab;
1328	char namebuf[BBSIZE];
1329	int f;
1330
1331	if (dkname[0] == '/') {
1332		fprintf(stderr,
1333		"\"auto\" requires the usage of a canonical disk name.\n");
1334		return (NULL);
1335	}
1336	(void)snprintf(namebuf, BBSIZE, "%sr%s", _PATH_DEV, dkname);
1337	if ((f = open(namebuf, O_RDONLY, 0)) == -1) {
1338		err(4, "open()");
1339		return (NULL);
1340	}
1341	if (ioctl(f, DIOCGDINFO, &lab) < 0) {
1342		err(4, "ioctl DIOCGDINFO");
1343		close(f);
1344		return (NULL);
1345	}
1346	close(f);
1347	return (&lab);
1348}
1349
1350
1351/*
1352 * If we are installing a boot program that doesn't fit in d_bbsize
1353 * we need to mark those partitions that the boot overflows into.
1354 * This allows newfs to prevent creation of a filesystem where it might
1355 * clobber bootstrap code.
1356 */
1357void
1358setbootflag(lp)
1359	register struct disklabel *lp;
1360{
1361	register struct partition *pp;
1362	int i, errors = 0;
1363	char part;
1364	u_long boffset;
1365
1366	if (bootbuf == 0)
1367		return;
1368	boffset = bootsize / lp->d_secsize;
1369	for (i = 0; i < lp->d_npartitions; i++) {
1370		part = 'a' + i;
1371		pp = &lp->d_partitions[i];
1372		if (pp->p_size == 0)
1373			continue;
1374		if (boffset <= pp->p_offset) {
1375			if (pp->p_fstype == FS_BOOT)
1376				pp->p_fstype = FS_UNUSED;
1377		} else if (pp->p_fstype != FS_BOOT) {
1378			if (pp->p_fstype != FS_UNUSED) {
1379				fprintf(stderr,
1380					"boot overlaps used partition %c\n",
1381					part);
1382				errors++;
1383			} else {
1384				pp->p_fstype = FS_BOOT;
1385				Warning("boot overlaps partition %c, %s",
1386					part, "marked as FS_BOOT");
1387			}
1388		}
1389	}
1390	if (errors) {
1391		fprintf(stderr, "Cannot install boot program\n");
1392		exit(4);
1393	}
1394}
1395
1396/*VARARGS1*/
1397void
1398Warning(char *fmt, ...)
1399{
1400	va_list ap;
1401
1402	fprintf(stderr, "Warning, ");
1403	va_start(ap, fmt);
1404	vfprintf(stderr, fmt, ap);
1405	fprintf(stderr, "\n");
1406	va_end(ap);
1407}
1408
1409void
1410usage()
1411{
1412#if NUMBOOT > 0
1413	fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
1414		"usage: disklabel [-r] disk",
1415		"\t\t(to read label)",
1416		"       disklabel -w [-r] disk type [ packid ]",
1417		"\t\t(to write label with existing boot program)",
1418		"       disklabel -e [-r] disk",
1419		"\t\t(to edit label)",
1420		"       disklabel -R [-r] disk protofile",
1421		"\t\t(to restore label with existing boot program)",
1422#if NUMBOOT > 1
1423		"       disklabel -B [ -b boot1 [ -s boot2 ] ] disk [ type ]",
1424		"\t\t(to install boot program with existing label)",
1425		"       disklabel -w -B [ -b boot1 [ -s boot2 ] ] disk type [ packid ]",
1426		"\t\t(to write label and boot program)",
1427		"       disklabel -R -B [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]",
1428		"\t\t(to restore label and boot program)",
1429#else
1430		"       disklabel -B [ -b bootprog ] disk [ type ]",
1431		"\t\t(to install boot program with existing on-disk label)",
1432		"       disklabel -w -B [ -b bootprog ] disk type [ packid ]",
1433		"\t\t(to write label and install boot program)",
1434		"       disklabel -R -B [ -b bootprog ] disk protofile [ type ]",
1435		"\t\t(to restore label and install boot program)",
1436#endif
1437		"       disklabel [-NW] disk",
1438		"\t\t(to write disable/enable label)");
1439#else
1440	fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
1441		"usage: disklabel [-r] disk", "(to read label)",
1442		"       disklabel -w [-r] disk type [ packid ]",
1443		"\t\t(to write label)",
1444		"       disklabel -e [-r] disk",
1445		"\t\t(to edit label)",
1446		"       disklabel -R [-r] disk protofile",
1447		"\t\t(to restore label)",
1448		"       disklabel [-NW] disk",
1449		"\t\t(to write disable/enable label)");
1450#endif
1451	exit(1);
1452}
1453