BSD 4.4 Lite usr.sbin Sources

3 files changed, 855 insertions, 0 deletions

diff --git a/usr.sbin/bad144/Makefile b/usr.sbin/bad144/Makefile
new file mode 100644
index 0000000..f3e10da
--- /dev/null
+++ b/usr.sbin/bad144/Makefile
@@ -0,0 +1,7 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	bad144
+MAN8=	bad144.0
+MANSUBDIR=/vax
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/bad144/bad144.8 b/usr.sbin/bad144/bad144.8
new file mode 100644
index 0000000..9ea8c88
--- /dev/null
+++ b/usr.sbin/bad144/bad144.8
@@ -0,0 +1,186 @@
+.\" Copyright (c) 1980, 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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.
+.\"
+.\"     @(#)bad144.8	8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt BAD144 8
+.Os BSD 4
+.Sh NAME
+.Nm bad144
+.Nd read/write dec standard 144 bad sector information
+.Sh SYNOPSIS
+.Nm bad144
+.Op Fl c
+.Op Fl f
+.Op Fl v
+.Ar disk
+.Oo
+.Ar sno
+.Op Ar bad ...
+.Oc
+.Nm bad144
+.Fl a
+.Op Fl c
+.Op Fl f
+.Op Fl v
+.Ar disk
+.Op Ar bad ...
+.Sh DESCRIPTION
+.Nm Bad144
+can be used to inspect the information stored on a disk that is used by
+the disk drivers to implement bad sector forwarding.
+.Pp
+Available options:
+.Pp
+.Bl -tag -width Ds
+.It Fl a
+The argument list consists of new bad sectors to be added to an existing
+list.
+The new sectors are sorted into the list,
+which must have been in order.
+Replacement sectors are moved to accommodate the additions;
+the new replacement sectors are cleared.
+.It Fl c
+Forces an attempt to copy the old sector to the replacement,
+and may be useful when replacing an unreliable sector.
+.It Fl f
+For a RP06, RM03, RM05, Fujitsu Eagle,
+or
+.Tn SMD
+disk on a Massbus, the
+.Fl f
+option may be used to mark the new bad sectors as ``bad''
+by reformatting them as unusable sectors.
+This option is
+.Em required unless
+the sectors have already been marked bad,
+or the system will not be notified that it should use the replacement sector.
+This option may be used while running multiuser; it is no longer necessary
+to perform format operations while running single-user.
+.It Fl v
+The entire process is described as it happens in gory detail if
+.Fl v
+(verbose) is given.
+.El
+.Pp
+The format of
+the information is specified by
+.Tn DEC
+standard 144, as follows.
+The bad sector information is located in the first 5 even numbered sectors
+of the last track of the disk pack.  There are five identical copies of
+the information, described by the
+.Ar dkbad
+structure.
+.Pp
+Replacement sectors are allocated starting with the first sector before
+the bad sector information and working backwards towards the beginning
+of the disk.  A maximum of 126 bad sectors are supported.  The position
+of the bad sector in the bad sector table determines the replacement
+sector to which it corresponds.
+The bad sectors must be listed in ascending order.
+.Pp
+The bad sector information and replacement sectors are conventionally
+only accessible through the ``c'' file system partition of the disk.  If
+that partition is used for a file system, the user is responsible for
+making sure that it does not overlap the bad sector information or any
+replacement sectors.
+Thus, one track plus 126 sectors must be reserved to allow use
+of all of the possible bad sector replacements.
+.Pp
+The bad sector structure is as follows:
+.Bd -literal
+struct dkbad {
+	long	bt_csn;		 /* cartridge serial number */
+	u_short	bt_mbz;		 /* unused; should be 0 */
+	u_short	bt_flag;	 /* -1 => alignment cartridge */
+	struct bt_bad {
+	      u_short bt_cyl;    /* bad sector cylinder number */
+	      u_short bt_trksec; /* track and sector number */
+	} bt_bad[126];
+};
+.Ed
+.Pp
+Unused slots in the
+.Ar bt_bad
+array are filled with all bits set, a putatively
+illegal value.
+.Pp
+.Nm Bad144
+is invoked by giving a device name (e.g. hk0, hp1, etc.).
+With no optional arguments
+it reads the first sector of the last track
+of the corresponding disk and prints out the bad sector information.
+It issues a warning if the bad sectors are out of order.
+.Nm Bad144
+may also be invoked with a serial number for the pack and a list
+of bad sectors.
+It will write the supplied information into all copies
+of the bad-sector file, replacing any previous information.
+Note, however, that 
+.Nm bad144
+does not arrange for the specified sectors to be marked bad in this case.
+This procedure should only be used to restore known bad sector information which
+was destroyed.
+.Pp
+It is no longer necessary to reboot to allow the kernel
+to reread the bad-sector table from the drive.
+.Sh SEE ALSO
+.Xr badsect 8 ,
+.Xr format 8
+.Sh BUGS
+It should be possible to format disks on-line under
+.Tn UNIX .
+.Pp
+It should be possible to mark bad sectors on drives of all type.
+.Pp
+On an 11/750,
+the standard bootstrap drivers used to boot the system do
+not understand bad sectors,
+handle
+.Tn ECC
+errors, or the special
+.Tn SSE
+(skip sector) errors of RM80-type disks.
+This means that none of these errors can occur when reading the file
+.Pa /vmunix
+to boot.  Sectors 0-15 of the disk drive
+must also not have any of these errors.
+.Pp
+The drivers which write a system core image on disk after a crash do not
+handle errors; thus the crash dump area must be free of errors and bad
+sectors.
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.1 .
diff --git a/usr.sbin/bad144/bad144.c b/usr.sbin/bad144/bad144.c
new file mode 100644
index 0000000..0afa9e4
--- /dev/null
+++ b/usr.sbin/bad144/bad144.c
@@ -0,0 +1,662 @@
+/*
+ * Copyright (c) 1993, 198019861988
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1993, 198019861988\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif not lint
+
+#ifndef lint
+static char sccsid[] = "@(#)bad144.c	8.1 (Berkeley) 6/6/93";
+#endif not lint
+
+/*
+ * bad144
+ *
+ * This program prints and/or initializes a bad block record for a pack,
+ * in the format used by the DEC standard 144.
+ * It can also add bad sector(s) to the record, moving the sector
+ * replacements as necessary.
+ *
+ * It is preferable to write the bad information with a standard formatter,
+ * but this program will do.
+ * 
+ * RP06 sectors are marked as bad by inverting the format bit in the
+ * header; on other drives the valid-sector bit is cleared.
+ */
+#include <sys/param.h>
+#include <sys/dkbad.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <sys/disklabel.h>
+#include <ufs/ffs/fs.h>
+
+#include <stdio.h>
+#include <paths.h>
+
+#define RETRIES	10		/* number of retries on reading old sectors */
+#define	RAWPART	"c"		/* disk partition containing badsector tables */
+
+int	fflag, add, copy, verbose, nflag;
+int	compare();
+int	dups;
+int	badfile = -1;		/* copy of badsector table to use, -1 if any */
+#define MAXSECSIZE	1024
+struct	dkbad curbad, oldbad;
+#define	DKBAD_MAGIC	0
+
+char	label[BBSIZE];
+daddr_t	size, getold(), badsn();
+struct	disklabel *dp;
+char	name[BUFSIZ];
+char	*malloc();
+off_t	lseek();
+
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	register struct bt_bad *bt;
+	daddr_t	sn, bn[126];
+	int i, f, nbad, new, bad, errs;
+
+	argc--, argv++;
+	while (argc > 0 && **argv == '-') {
+		(*argv)++;
+		while (**argv) {
+			switch (**argv) {
+#if vax
+			    case 'f':
+				fflag++;
+				break;
+#endif
+			    case 'a':
+				add++;
+				break;
+			    case 'c':
+				copy++;
+				break;
+			    case 'v':
+				verbose++;
+				break;
+			    case 'n':
+				nflag++;
+				verbose++;
+				break;
+			    default:
+				if (**argv >= '0' && **argv <= '4') {
+					badfile = **argv - '0';
+					break;
+				}
+				goto usage;
+			}
+			(*argv)++;
+		}
+		argc--, argv++;
+	}
+	if (argc < 1) {
+usage:
+		fprintf(stderr,
+		  "usage: bad144 [ -f ] disk [ snum [ bn ... ] ]\n");
+		fprintf(stderr,
+	      "to read or overwrite bad-sector table, e.g.: bad144 hp0\n");
+		fprintf(stderr,
+		  "or bad144 -a [ -f ] [ -c ] disk  bn ...\n");
+		fprintf(stderr, "where options are:\n");
+		fprintf(stderr, "\t-a  add new bad sectors to the table\n");
+		fprintf(stderr, "\t-f  reformat listed sectors as bad\n");
+		fprintf(stderr, "\t-c  copy original sector to replacement\n");
+		exit(1);
+	}
+	if (argv[0][0] != '/')
+		(void)sprintf(name, "%s/r%s%s", _PATH_DEV, argv[0], RAWPART);
+	else
+		strcpy(name, argv[0]);
+	f = open(name, argc == 1? O_RDONLY : O_RDWR);
+	if (f < 0)
+		Perror(name);
+	if (read(f, label, sizeof(label)) < 0) 
+		Perror("read");
+	for (dp = (struct disklabel *)(label + LABELOFFSET);
+	    dp < (struct disklabel *)
+		(label + sizeof(label) - sizeof(struct disklabel));
+	    dp = (struct disklabel *)((char *)dp + 64))
+		if (dp->d_magic == DISKMAGIC && dp->d_magic2 == DISKMAGIC)
+			break;
+	if (dp->d_magic != DISKMAGIC || dp->d_magic2 != DISKMAGIC) {
+		fprintf(stderr, "Bad pack magic number (pack is unlabeled)\n");
+		exit(1);
+	}
+	if (dp->d_secsize > MAXSECSIZE || dp->d_secsize <= 0) {
+		fprintf(stderr, "Disk sector size too large/small (%d)\n",
+			dp->d_secsize);
+		exit(7);
+	}
+	size = dp->d_nsectors * dp->d_ntracks * dp->d_ncylinders; 
+	argc--;
+	argv++;
+	if (argc == 0) {
+		sn = getold(f, &oldbad);
+		printf("bad block information at sector %d in %s:\n",
+		    sn, name);
+		printf("cartridge serial number: %d(10)\n", oldbad.bt_csn);
+		switch (oldbad.bt_flag) {
+
+		case (u_short)-1:
+			printf("alignment cartridge\n");
+			break;
+
+		case DKBAD_MAGIC:
+			break;
+
+		default:
+			printf("bt_flag=%x(16)?\n", oldbad.bt_flag);
+			break;
+		}
+		bt = oldbad.bt_bad;
+		for (i = 0; i < 126; i++) {
+			bad = (bt->bt_cyl<<16) + bt->bt_trksec;
+			if (bad < 0)
+				break;
+			printf("sn=%d, cn=%d, tn=%d, sn=%d\n", badsn(bt),
+			    bt->bt_cyl, bt->bt_trksec>>8, bt->bt_trksec&0xff);
+			bt++;
+		}
+		(void) checkold(&oldbad);
+		exit(0);
+	}
+	if (add) {
+		/*
+		 * Read in the old badsector table.
+		 * Verify that it makes sense, and the bad sectors
+		 * are in order.  Copy the old table to the new one.
+		 */
+		(void) getold(f, &oldbad);
+		i = checkold(&oldbad);
+		if (verbose)
+			printf("Had %d bad sectors, adding %d\n", i, argc);
+		if (i + argc > 126) {
+			printf("bad144: not enough room for %d more sectors\n",
+				argc);
+			printf("limited to 126 by information format\n");
+			exit(1);
+		}
+		curbad = oldbad;
+	} else {
+		curbad.bt_csn = atoi(*argv++);
+		argc--;
+		curbad.bt_mbz = 0;
+		curbad.bt_flag = DKBAD_MAGIC;
+		if (argc > 126) {
+			printf("bad144: too many bad sectors specified\n");
+			printf("limited to 126 by information format\n");
+			exit(1);
+		}
+		i = 0;
+	}
+	errs = 0;
+	new = argc;
+	while (argc > 0) {
+		daddr_t sn = atoi(*argv++);
+		argc--;
+		if (sn < 0 || sn >= size) {
+			printf("%d: out of range [0,%d) for disk %s\n",
+			    sn, size, dp->d_typename);
+			errs++;
+			continue;
+		}
+		bn[i] = sn;
+		curbad.bt_bad[i].bt_cyl = sn / (dp->d_nsectors*dp->d_ntracks);
+		sn %= (dp->d_nsectors*dp->d_ntracks);
+		curbad.bt_bad[i].bt_trksec =
+		    ((sn/dp->d_nsectors) << 8) + (sn%dp->d_nsectors);
+		i++;
+	}
+	if (errs)
+		exit(1);
+	nbad = i;
+	while (i < 126) {
+		curbad.bt_bad[i].bt_trksec = -1;
+		curbad.bt_bad[i].bt_cyl = -1;
+		i++;
+	}
+	if (add) {
+		/*
+		 * Sort the new bad sectors into the list.
+		 * Then shuffle the replacement sectors so that
+		 * the previous bad sectors get the same replacement data.
+		 */
+		qsort((char *)curbad.bt_bad, nbad, sizeof (struct bt_bad),
+		    compare);
+		if (dups) {
+			fprintf(stderr,
+"bad144: bad sectors have been duplicated; can't add existing sectors\n");
+			exit(3);
+		}
+		shift(f, nbad, nbad-new);
+	}
+	if (badfile == -1)
+		i = 0;
+	else
+		i = badfile * 2;
+	for (; i < 10 && i < dp->d_nsectors; i += 2) {
+		if (lseek(f, dp->d_secsize * (size - dp->d_nsectors + i),
+		    L_SET) < 0)
+			Perror("lseek");
+		if (verbose)
+			printf("write badsect file at %d\n",
+				size - dp->d_nsectors + i);
+		if (nflag == 0 && write(f, (caddr_t)&curbad, sizeof(curbad)) !=
+		    sizeof(curbad)) {
+			char msg[80];
+			(void)sprintf(msg, "bad144: write bad sector file %d",
+			    i/2);
+			perror(msg);
+		}
+		if (badfile != -1)
+			break;
+	}
+#ifdef vax
+	if (nflag == 0 && fflag)
+		for (i = nbad - new; i < nbad; i++)
+			format(f, bn[i]);
+#endif
+#ifdef DIOCSBAD
+	if (nflag == 0 && ioctl(f, DIOCSBAD, (caddr_t)&curbad) < 0)
+		fprintf(stderr,
+	"Can't sync bad-sector file; reboot for changes to take effect\n");
+#endif
+	exit(0);
+}
+
+daddr_t
+getold(f, bad)
+struct dkbad *bad;
+{
+	register int i;
+	daddr_t sn;
+	char msg[80];
+
+	if (badfile == -1)
+		i = 0;
+	else
+		i = badfile * 2;
+	for (; i < 10 && i < dp->d_nsectors; i += 2) {
+		sn = size - dp->d_nsectors + i;
+		if (lseek(f, sn * dp->d_secsize, L_SET) < 0)
+			Perror("lseek");
+		if (read(f, (char *) bad, dp->d_secsize) == dp->d_secsize) {
+			if (i > 0)
+				printf("Using bad-sector file %d\n", i/2);
+			return(sn);
+		}
+		(void)sprintf(msg, "bad144: read bad sector file at sn %d", sn);
+		perror(msg);
+		if (badfile != -1)
+			break;
+	}
+	fprintf(stderr, "bad144: %s: can't read bad block info\n", name);
+	exit(1);
+	/*NOTREACHED*/
+}
+
+checkold()
+{
+	register int i;
+	register struct bt_bad *bt;
+	daddr_t sn, lsn;
+	int errors = 0, warned = 0;
+
+	if (oldbad.bt_flag != DKBAD_MAGIC) {
+		fprintf(stderr, "bad144: %s: bad flag in bad-sector table\n",
+			name);
+		errors++;
+	}
+	if (oldbad.bt_mbz != 0) {
+		fprintf(stderr, "bad144: %s: bad magic number\n", name);
+		errors++;
+	}
+	bt = oldbad.bt_bad;
+	for (i = 0; i < 126; i++, bt++) {
+		if (bt->bt_cyl == 0xffff && bt->bt_trksec == 0xffff)
+			break;
+		if ((bt->bt_cyl >= dp->d_ncylinders) ||
+		    ((bt->bt_trksec >> 8) >= dp->d_ntracks) ||
+		    ((bt->bt_trksec & 0xff) >= dp->d_nsectors)) {
+			fprintf(stderr,
+		     "bad144: cyl/trk/sect out of range in existing entry: ");
+			fprintf(stderr, "sn=%d, cn=%d, tn=%d, sn=%d\n",
+				badsn(bt), bt->bt_cyl, bt->bt_trksec>>8,
+				bt->bt_trksec & 0xff);
+			errors++;
+		}
+		sn = (bt->bt_cyl * dp->d_ntracks +
+		    (bt->bt_trksec >> 8)) *
+		    dp->d_nsectors + (bt->bt_trksec & 0xff);
+		if (i > 0 && sn < lsn && !warned) {
+		    fprintf(stderr,
+			"bad144: bad sector file is out of order\n");
+		    errors++;
+		    warned++;
+		}
+		if (i > 0 && sn == lsn) {
+		    fprintf(stderr,
+			"bad144: bad sector file contains duplicates (sn %d)\n",
+			sn);
+		    errors++;
+		}
+		lsn = sn;
+	}
+	if (errors)
+		exit(1);
+	return (i);
+}
+
+/*
+ * Move the bad sector replacements
+ * to make room for the new bad sectors.
+ * new is the new number of bad sectors, old is the previous count.
+ */
+shift(f, new, old)
+{
+	daddr_t repl;
+
+	/*
+	 * First replacement is last sector of second-to-last track.
+	 */
+	repl = size - dp->d_nsectors - 1;
+	new--; old--;
+	while (new >= 0 && new != old) {
+		if (old < 0 ||
+		    compare(&curbad.bt_bad[new], &oldbad.bt_bad[old]) > 0) {
+			/*
+			 * Insert new replacement here-- copy original
+			 * sector if requested and possible,
+			 * otherwise write a zero block.
+			 */
+			if (!copy ||
+			    !blkcopy(f, badsn(&curbad.bt_bad[new]), repl - new))
+				blkzero(f, repl - new);
+		} else {
+			if (blkcopy(f, repl - old, repl - new) == 0)
+			    fprintf(stderr,
+				"Can't copy replacement sector %d to %d\n",
+				repl-old, repl-new);
+			old--;
+		}
+		new--;
+	}
+}
+
+char *buf;
+
+/*
+ *  Copy disk sector s1 to s2.
+ */
+blkcopy(f, s1, s2)
+daddr_t s1, s2;
+{
+	register tries, n;
+
+	if (buf == (char *)NULL) {
+		buf = malloc((unsigned)dp->d_secsize);
+		if (buf == (char *)NULL) {
+			fprintf(stderr, "Out of memory\n");
+			exit(20);
+		}
+	}
+	for (tries = 0; tries < RETRIES; tries++) {
+		if (lseek(f, dp->d_secsize * s1, L_SET) < 0)
+			Perror("lseek");
+		if ((n = read(f, buf, dp->d_secsize)) == dp->d_secsize)
+			break;
+	}
+	if (n != dp->d_secsize) {
+		fprintf(stderr, "bad144: can't read sector, %d: ", s1);
+		if (n < 0)
+			perror((char *)0);
+		return(0);
+	}
+	if (lseek(f, dp->d_secsize * s2, L_SET) < 0)
+		Perror("lseek");
+	if (verbose)
+		printf("copying %d to %d\n", s1, s2);
+	if (nflag == 0 && write(f, buf, dp->d_secsize) != dp->d_secsize) {
+		fprintf(stderr,
+		    "bad144: can't write replacement sector, %d: ", s2);
+		perror((char *)0);
+		return(0);
+	}
+	return(1);
+}
+
+char *zbuf;
+
+blkzero(f, sn)
+daddr_t sn;
+{
+
+	if (zbuf == (char *)NULL) {
+		zbuf = malloc((unsigned)dp->d_secsize);
+		if (zbuf == (char *)NULL) {
+			fprintf(stderr, "Out of memory\n");
+			exit(20);
+		}
+	}
+	if (lseek(f, dp->d_secsize * sn, L_SET) < 0)
+		Perror("lseek");
+	if (verbose)
+		printf("zeroing %d\n", sn);
+	if (nflag == 0 && write(f, zbuf, dp->d_secsize) != dp->d_secsize) {
+		fprintf(stderr,
+		    "bad144: can't write replacement sector, %d: ", sn);
+		perror((char *)0);
+	}
+}
+
+compare(b1, b2)
+register struct bt_bad *b1, *b2;
+{
+	if (b1->bt_cyl > b2->bt_cyl)
+		return(1);
+	if (b1->bt_cyl < b2->bt_cyl)
+		return(-1);
+	if (b1->bt_trksec == b2->bt_trksec)
+		dups++;
+	return (b1->bt_trksec - b2->bt_trksec);
+}
+
+daddr_t
+badsn(bt)
+register struct bt_bad *bt;
+{
+	return ((bt->bt_cyl*dp->d_ntracks + (bt->bt_trksec>>8)) * dp->d_nsectors
+		+ (bt->bt_trksec&0xff));
+}
+
+#ifdef vax
+
+struct rp06hdr {
+	short	h_cyl;
+	short	h_trksec;
+	short	h_key1;
+	short	h_key2;
+	char	h_data[512];
+#define	RP06_FMT	010000		/* 1 == 16 bit, 0 == 18 bit */
+};
+
+/*
+ * Most massbus and unibus drives
+ * have headers of this form
+ */
+struct hpuphdr {
+	u_short	hpup_cyl;
+	u_char	hpup_sect;
+	u_char	hpup_track;
+	char	hpup_data[512];
+#define	HPUP_OKSECT	0xc000		/* this normally means sector is good */
+#define	HPUP_16BIT	0x1000		/* 1 == 16 bit format */
+};
+int rp06format(), hpupformat();
+
+struct	formats {
+	char	*f_name;		/* disk name */
+	int	f_bufsize;		/* size of sector + header */
+	int	f_bic;			/* value to bic in hpup_cyl */
+	int	(*f_routine)();		/* routine for special handling */
+} formats[] = {
+	{ "rp06",	sizeof (struct rp06hdr), RP06_FMT,	rp06format },
+	{ "eagle",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ "capricorn",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ "rm03",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ "rm05",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ "9300",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ "9766",	sizeof (struct hpuphdr), HPUP_OKSECT,	hpupformat },
+	{ 0, 0, 0, 0 }
+};
+
+/*ARGSUSED*/
+hpupformat(fp, dp, blk, buf, count)
+	struct formats *fp;
+	struct disklabel *dp;
+	daddr_t blk;
+	char *buf;
+	int count;
+{
+	struct hpuphdr *hdr = (struct hpuphdr *)buf;
+	int sect;
+
+	if (count < sizeof(struct hpuphdr)) {
+		hdr->hpup_cyl = (HPUP_OKSECT | HPUP_16BIT) |
+			(blk / (dp->d_nsectors * dp->d_ntracks));
+		sect = blk % (dp->d_nsectors * dp->d_ntracks);
+		hdr->hpup_track = (u_char)(sect / dp->d_nsectors);
+		hdr->hpup_sect = (u_char)(sect % dp->d_nsectors);
+	}
+	return (0);
+}
+
+/*ARGSUSED*/
+rp06format(fp, dp, blk, buf, count)
+	struct formats *fp;
+	struct disklabel *dp;
+	daddr_t blk;
+	char *buf;
+	int count;
+{
+
+	if (count < sizeof(struct rp06hdr)) {
+		fprintf(stderr, "Can't read header on blk %d, can't reformat\n",
+			blk);
+		return (-1);
+	}
+	return (0);
+}
+
+format(fd, blk)
+	int fd;
+	daddr_t blk;
+{
+	register struct formats *fp;
+	static char *buf;
+	static char bufsize;
+	struct format_op fop;
+	int n;
+
+	for (fp = formats; fp->f_name; fp++)
+		if (strcmp(dp->d_typename, fp->f_name) == 0)
+			break;
+	if (fp->f_name == 0) {
+		fprintf(stderr, "bad144: don't know how to format %s disks\n",
+			dp->d_typename);
+		exit(2);
+	}
+	if (buf && bufsize < fp->f_bufsize) {
+		free(buf);
+		buf = NULL;
+	}
+	if (buf == NULL)
+		buf = malloc((unsigned)fp->f_bufsize);
+	if (buf == NULL) {
+		fprintf(stderr, "bad144: can't allocate sector buffer\n");
+		exit(3);
+	}
+	bufsize = fp->f_bufsize;
+	/*
+	 * Here we do the actual formatting.  All we really
+	 * do is rewrite the sector header and flag the bad sector
+	 * according to the format table description.  If a special
+	 * purpose format routine is specified, we allow it to
+	 * process the sector as well.
+	 */
+	if (verbose)
+		printf("format blk %d\n", blk);
+	bzero((char *)&fop, sizeof(fop));
+	fop.df_buf = buf;
+	fop.df_count = fp->f_bufsize;
+	fop.df_startblk = blk;
+	bzero(buf, fp->f_bufsize);
+	if (ioctl(fd, DIOCRFORMAT, &fop) < 0)
+		perror("bad144: read format");
+	if (fp->f_routine &&
+	    (*fp->f_routine)(fp, dp, blk, buf, fop.df_count) != 0)
+		return;
+	if (fp->f_bic) {
+		struct hpuphdr *xp = (struct hpuphdr *)buf;
+
+		xp->hpup_cyl &= ~fp->f_bic;
+	}
+	if (nflag)
+		return;
+	bzero((char *)&fop, sizeof(fop));
+	fop.df_buf = buf;
+	fop.df_count = fp->f_bufsize;
+	fop.df_startblk = blk;
+	if (ioctl(fd, DIOCWFORMAT, &fop) < 0)
+		Perror("write format");
+	if (fop.df_count != fp->f_bufsize) {
+		char msg[80];
+		(void)sprintf(msg, "bad144: write format %d", blk);
+		perror(msg);
+	}
+}
+#endif
+
+Perror(op)
+	char *op;
+{
+
+	fprintf(stderr, "bad144: "); perror(op);
+	exit(4);
+}