a895e91016
field. According to disklabel.h, its LFS semantics are "segment shift" (log2(segment size)), but in the code it is used nowhere, and there are even plans to allow non-poweroftwo segment sizes, so it won't ever work. While at this, simplify the disktab-like output routine... here, currently, BSDFFS, BSDLFS, EX2FS and ADOS do the same, so don't duplicate the code.
1898 lines
45 KiB
C
1898 lines
45 KiB
C
/* $NetBSD: disklabel.c,v 1.73 1999/06/04 19:02:34 is Exp $ */
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/*
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* Copyright (c) 1987, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Symmetric Computer Systems.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1987, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)disklabel.c 8.4 (Berkeley) 5/4/95";
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/* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */
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#else
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__RCSID("$NetBSD: disklabel.c,v 1.73 1999/06/04 19:02:34 is Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#define DKTYPENAMES
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#define FSTYPENAMES
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#include <sys/disklabel.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <unistd.h>
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#include <signal.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <util.h>
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#include <disktab.h>
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#include "pathnames.h"
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#include "extern.h"
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#include "dkcksum.h"
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/*
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* Disklabel: read and write disklabels.
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* The label is usually placed on one of the first sectors of the disk.
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* Many machines also place a bootstrap in the same area,
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* in which case the label is embedded in the bootstrap.
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* The bootstrap source must leave space at the proper offset
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* for the label on such machines.
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*/
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#ifndef BBSIZE
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#define BBSIZE 8192 /* size of boot area, with label */
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#endif
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#ifndef NUMBOOT
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#define NUMBOOT 0
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#endif
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extern char *__progname;
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|
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#define DEFEDITOR _PATH_VI
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static char *dkname;
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static char *specname;
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static char tmpfil[] = _PATH_TMP;
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static char namebuf[BBSIZE], *np = namebuf;
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static struct disklabel lab;
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char bootarea[BBSIZE];
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#if NUMBOOT > 0
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static int installboot; /* non-zero if we should install a boot program */
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static char *bootbuf; /* pointer to buffer with remainder of boot prog */
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static int bootsize; /* size of remaining boot program */
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static char *xxboot; /* primary boot */
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static char *bootxx; /* secondary boot */
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static char boot0[MAXPATHLEN];
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#if NUMBOOT > 1
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static char boot1[MAXPATHLEN];
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#endif
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#endif
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static enum {
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UNSPEC, EDIT, READ, RESTORE, SETWRITEABLE, WRITE, WRITEBOOT, INTERACT
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} op = UNSPEC;
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static int rflag;
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static int tflag;
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static int Cflag;
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#ifdef DEBUG
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static int debug;
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#define OPTIONS "BCNRWb:def:irs:tw"
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#else
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#define OPTIONS "BCNRWb:ef:irs:tw"
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#endif
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#ifdef __i386__
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static struct mbr_partition *dosdp; /* i386 DOS partition, if found */
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static int mbrpt_nobsd; /* MBR partition table exists, but no BSD partition */
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static struct mbr_partition *readmbr __P((int));
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#endif
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#ifdef __arm32__
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static u_int filecore_partition_offset;
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static u_int get_filecore_partition __P((int));
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static int filecore_checksum __P((u_char *));
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#endif /* __arm32__ */
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#if defined(__i386__) || (defined(__arm32__) && defined(notyet))
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static void confirm __P((const char *));
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#endif
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int main __P((int, char *[]));
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static void makedisktab __P((FILE *, struct disklabel *));
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static void makelabel __P((char *, char *, struct disklabel *));
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static void l_perror __P((char *));
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static struct disklabel *readlabel __P((int));
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static struct disklabel *makebootarea __P((char *, struct disklabel *, int));
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static void showinfo __P((FILE *, struct disklabel *));
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static int edit __P((struct disklabel *, int));
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static int editit __P((void));
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static char *skip __P((char *));
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static char *word __P((char *));
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static int getasciilabel __P((FILE *, struct disklabel *));
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#if NUMBOOT > 0
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static void setbootflag __P((struct disklabel *));
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#endif
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct disklabel *lp;
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FILE *t;
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int ch, f, writeable, error = 0;
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while ((ch = getopt(argc, argv, OPTIONS)) != -1)
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switch (ch) {
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#if NUMBOOT > 0
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case 'B':
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++installboot;
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break;
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case 'b':
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xxboot = optarg;
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break;
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#if NUMBOOT > 1
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case 's':
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bootxx = optarg;
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break;
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#endif
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#endif
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case 'C':
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++Cflag;
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break;
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case 'N':
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if (op != UNSPEC)
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usage();
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writeable = 0;
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op = SETWRITEABLE;
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break;
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case 'R':
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if (op != UNSPEC)
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usage();
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op = RESTORE;
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break;
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case 'W':
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if (op != UNSPEC)
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usage();
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writeable = 1;
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op = SETWRITEABLE;
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break;
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case 'e':
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if (op != UNSPEC)
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usage();
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op = EDIT;
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break;
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case 'f':
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if (setdisktab(optarg) == -1)
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usage();
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break;
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case 'i':
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if (op != UNSPEC)
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usage();
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op = INTERACT;
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break;
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case 't':
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++tflag;
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break;
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case 'r':
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++rflag;
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break;
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case 'w':
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if (op != UNSPEC)
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usage();
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op = WRITE;
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break;
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#ifdef DEBUG
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case 'd':
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debug++;
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break;
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#endif
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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#if NUMBOOT > 0
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if (installboot) {
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rflag++;
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if (op == UNSPEC)
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op = WRITEBOOT;
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} else {
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if (op == UNSPEC)
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op = READ;
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}
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#else
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if (op == UNSPEC)
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op = READ;
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#endif
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if (argc < 1)
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usage();
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dkname = argv[0];
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f = opendisk(dkname, op == READ ? O_RDONLY : O_RDWR, np, MAXPATHLEN, 0);
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specname = np;
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np += strlen(specname) + 1;
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if (f < 0)
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err(4, "%s", specname);
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#ifdef __i386__
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/*
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|
* Check for presence of DOS partition table in
|
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* master boot record. Return pointer to NetBSD/i386
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* partition, if present.
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*/
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dosdp = readmbr(f);
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#endif
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#ifdef __arm32__
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/*
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* Check for the presence of a RiscOS filecore boot block
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* indicating an ADFS file system on the disc.
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* Return the offset to the NetBSD part of the disc if
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* this can be determined.
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* This routine will terminate disklabel if the disc
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* is found to be ADFS only.
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*/
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filecore_partition_offset = get_filecore_partition(f);
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#endif /* __arm32__ */
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switch (op) {
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case EDIT:
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if (argc != 1)
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usage();
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lp = readlabel(f);
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error = edit(lp, f);
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break;
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case INTERACT:
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if (argc != 1)
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usage();
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lp = readlabel(f);
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/*
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* XXX: Fill some default values so checklabel does not fail
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*/
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if (lp->d_bbsize == 0)
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lp->d_bbsize = BBSIZE;
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if (lp->d_sbsize == 0)
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lp->d_sbsize = SBSIZE;
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interact(lp, f);
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break;
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case READ:
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if (argc != 1)
|
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usage();
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lp = readlabel(f);
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if (tflag)
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makedisktab(stdout, lp);
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else {
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showinfo(stdout, lp);
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showpartitions(stdout, lp);
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}
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error = checklabel(lp);
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break;
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|
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case RESTORE:
|
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if (argc < 2 || argc > 3)
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usage();
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#if NUMBOOT > 0
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if (installboot && argc == 3)
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makelabel(argv[2], (char *)0, &lab);
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#endif
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lp = makebootarea(bootarea, &lab, f);
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if (!(t = fopen(argv[1], "r")))
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err(4, "%s", argv[1]);
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if (getasciilabel(t, lp))
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error = writelabel(f, bootarea, lp);
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break;
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|
|
case SETWRITEABLE:
|
|
if (ioctl(f, DIOCWLABEL, (char *)&writeable) < 0)
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|
err(4, "ioctl DIOCWLABEL");
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break;
|
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|
|
case WRITE:
|
|
if (argc < 2 || argc > 3)
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usage();
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|
makelabel(argv[1], argc == 3 ? argv[2] : (char *)0, &lab);
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lp = makebootarea(bootarea, &lab, f);
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*lp = lab;
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if (checklabel(lp) == 0)
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error = writelabel(f, bootarea, lp);
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else
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error = 1;
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break;
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|
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case WRITEBOOT:
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#if NUMBOOT > 0
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{
|
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struct disklabel tlab;
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|
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lp = readlabel(f);
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tlab = *lp;
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if (argc == 2)
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makelabel(argv[1], (char *)0, &lab);
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lp = makebootarea(bootarea, &lab, f);
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*lp = tlab;
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if (checklabel(lp) == 0)
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error = writelabel(f, bootarea, lp);
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else
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error = 1;
|
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break;
|
|
}
|
|
#endif
|
|
case UNSPEC:
|
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usage();
|
|
}
|
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exit(error);
|
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}
|
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|
|
/*
|
|
* Construct a prototype disklabel from /etc/disktab. As a side
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* effect, set the names of the primary and secondary boot files
|
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* if specified.
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*/
|
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static void
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makelabel(type, name, lp)
|
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char *type, *name;
|
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struct disklabel *lp;
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{
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struct disklabel *dp;
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|
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dp = getdiskbyname(type);
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if (dp == NULL)
|
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errx(1, "unknown disk type: %s", type);
|
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*lp = *dp;
|
|
#if NUMBOOT > 0
|
|
/*
|
|
* Set bootstrap name(s).
|
|
* 1. If set from command line, use those,
|
|
* 2. otherwise, check if disktab specifies them (b0 or b1),
|
|
* 3. otherwise, makebootarea() will choose ones based on the name
|
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* of the disk special file. E.g. /dev/ra0 -> raboot, bootra
|
|
*/
|
|
if (!xxboot && lp->d_boot0) {
|
|
if (*lp->d_boot0 != '/')
|
|
(void)sprintf(boot0, "%s/%s",
|
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_PATH_BOOTDIR, lp->d_boot0);
|
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else
|
|
(void)strcpy(boot0, lp->d_boot0);
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xxboot = boot0;
|
|
}
|
|
#if NUMBOOT > 1
|
|
if (!bootxx && lp->d_boot1) {
|
|
if (*lp->d_boot1 != '/')
|
|
(void)sprintf(boot1, "%s/%s",
|
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_PATH_BOOTDIR, lp->d_boot1);
|
|
else
|
|
(void)strcpy(boot1, lp->d_boot1);
|
|
bootxx = boot1;
|
|
}
|
|
#endif
|
|
#endif
|
|
/* d_packname is union d_boot[01], so zero */
|
|
(void) memset(lp->d_packname, 0, sizeof(lp->d_packname));
|
|
if (name)
|
|
(void)strncpy(lp->d_packname, name, sizeof(lp->d_packname));
|
|
}
|
|
|
|
#if defined(__i386__) || (defined(__arm32__) && defined(notyet))
|
|
static void
|
|
confirm(txt)
|
|
const char *txt;
|
|
{
|
|
int first, ch;
|
|
|
|
(void) printf("%s? [n]: ", txt);
|
|
(void) fflush(stdout);
|
|
first = ch = getchar();
|
|
while (ch != '\n' && ch != EOF)
|
|
ch = getchar();
|
|
if (first != 'y' && first != 'Y')
|
|
exit(0);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
writelabel(f, boot, lp)
|
|
int f;
|
|
char *boot;
|
|
struct disklabel *lp;
|
|
{
|
|
int writeable;
|
|
off_t sectoffset = 0;
|
|
|
|
#if NUMBOOT > 0
|
|
setbootflag(lp);
|
|
#endif
|
|
lp->d_magic = DISKMAGIC;
|
|
lp->d_magic2 = DISKMAGIC;
|
|
lp->d_checksum = 0;
|
|
lp->d_checksum = dkcksum(lp);
|
|
|
|
#ifdef __sparc__
|
|
/* Let the kernel deal with SunOS disklabel compatibility */
|
|
if (0) {
|
|
#else
|
|
if (rflag) {
|
|
#endif
|
|
#ifdef __i386__
|
|
struct partition *pp = &lp->d_partitions[2];
|
|
|
|
/*
|
|
* If NetBSD/i386 DOS partition is missing, or if
|
|
* the label to be written is not within partition,
|
|
* prompt first. Need to allow this in case operator
|
|
* wants to convert the drive for dedicated use.
|
|
*/
|
|
if (dosdp) {
|
|
if (dosdp->mbrp_start != pp->p_offset)
|
|
confirm("Write outside MBR partition");
|
|
sectoffset = (off_t)pp->p_offset * lp->d_secsize;
|
|
} else {
|
|
if (mbrpt_nobsd)
|
|
confirm("Erase the previous contents"
|
|
" of the disk");
|
|
sectoffset = 0;
|
|
}
|
|
#endif
|
|
#ifdef __arm32__
|
|
/* XXX */
|
|
sectoffset = (off_t)filecore_partition_offset * DEV_BSIZE;
|
|
#endif /* __arm32__ */
|
|
/*
|
|
* First set the kernel disk label,
|
|
* then write a label to the raw disk.
|
|
* If the SDINFO ioctl fails because it is unimplemented,
|
|
* keep going; otherwise, the kernel consistency checks
|
|
* may prevent us from changing the current (in-core)
|
|
* label.
|
|
*/
|
|
if (ioctl(f, DIOCSDINFO, lp) < 0 &&
|
|
errno != ENODEV && errno != ENOTTY) {
|
|
l_perror("ioctl DIOCSDINFO");
|
|
return (1);
|
|
}
|
|
if (lseek(f, sectoffset, SEEK_SET) < 0) {
|
|
perror("lseek");
|
|
return (1);
|
|
}
|
|
/*
|
|
* write enable label sector before write (if necessary),
|
|
* disable after writing.
|
|
*/
|
|
writeable = 1;
|
|
if (ioctl(f, DIOCWLABEL, &writeable) < 0)
|
|
perror("ioctl DIOCWLABEL");
|
|
#ifdef __alpha__
|
|
/*
|
|
* The Alpha requires that the boot block be checksummed.
|
|
* The NetBSD/alpha disklabel.h provides a macro to do it.
|
|
*/
|
|
{
|
|
struct boot_block *bb = (struct boot_block *)boot;
|
|
|
|
CHECKSUM_BOOT_BLOCK(bb, &bb->bb_cksum);
|
|
}
|
|
#endif
|
|
|
|
if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
|
|
perror("write");
|
|
return (1);
|
|
}
|
|
#if NUMBOOT > 0
|
|
/*
|
|
* Output the remainder of the disklabel
|
|
*/
|
|
if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
|
|
perror("write");
|
|
return(1);
|
|
}
|
|
#endif
|
|
|
|
writeable = 0;
|
|
if (ioctl(f, DIOCWLABEL, &writeable) < 0)
|
|
perror("ioctl DIOCWLABEL");
|
|
} else {
|
|
if (ioctl(f, DIOCWDINFO, lp) < 0) {
|
|
l_perror("ioctl DIOCWDINFO");
|
|
return (1);
|
|
}
|
|
}
|
|
#ifdef __vax__
|
|
if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
|
|
daddr_t alt;
|
|
int i;
|
|
|
|
alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
|
|
for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
|
|
(void)lseek(f, (off_t)(alt + i) * lp->d_secsize,
|
|
SEEK_SET);
|
|
if (write(f, boot, lp->d_secsize) < lp->d_secsize)
|
|
warn("alternate label %d write", i/2);
|
|
}
|
|
}
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
l_perror(s)
|
|
char *s;
|
|
{
|
|
|
|
switch (errno) {
|
|
|
|
case ESRCH:
|
|
warnx("%s: No disk label on disk;\n"
|
|
"use \"disklabel -r\" to install initial label", s);
|
|
break;
|
|
|
|
case EINVAL:
|
|
warnx("%s: Label magic number or checksum is wrong!\n"
|
|
"(disklabel or kernel is out of date?)", s);
|
|
break;
|
|
|
|
case EBUSY:
|
|
warnx("%s: Open partition would move or shrink", s);
|
|
break;
|
|
|
|
case EXDEV:
|
|
warnx("%s: Labeled partition or 'a' partition must start"
|
|
" at beginning of disk", s);
|
|
break;
|
|
|
|
default:
|
|
warn("%s", s);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef __i386__
|
|
/*
|
|
* Fetch DOS partition table from disk.
|
|
*/
|
|
static struct mbr_partition *
|
|
readmbr(f)
|
|
int f;
|
|
{
|
|
static char mbr[DEV_BSIZE];
|
|
struct mbr_partition *dp = (struct mbr_partition *)&mbr[MBR_PARTOFF];
|
|
u_int16_t *mbrmagicp;
|
|
int part;
|
|
|
|
if (lseek(f, (off_t)MBR_BBSECTOR * DEV_BSIZE, SEEK_SET) < 0 ||
|
|
read(f, mbr, sizeof(mbr)) < sizeof(mbr))
|
|
err(4, "can't read master boot record");
|
|
|
|
/*
|
|
* Don't (yet) know disk geometry (BIOS), use
|
|
* partition table to find NetBSD/i386 partition, and obtain
|
|
* disklabel from there.
|
|
*/
|
|
/* Check if table is valid. */
|
|
mbrmagicp = (u_int16_t *)(&mbr[MBR_MAGICOFF]);
|
|
if (*mbrmagicp != MBR_MAGIC)
|
|
return (0);
|
|
/* Find NetBSD partition. */
|
|
for (part = 0; part < NMBRPART; part++) {
|
|
if (dp[part].mbrp_typ == MBR_PTYPE_NETBSD)
|
|
return (&dp[part]);
|
|
}
|
|
#ifdef COMPAT_386BSD_MBRPART
|
|
/* didn't find it -- look for 386BSD partition */
|
|
for (part = 0; part < NMBRPART; part++) {
|
|
if (dp[part].mbrp_typ == MBR_PTYPE_386BSD) {
|
|
warnx("old BSD partition ID!");
|
|
return (&dp[part]);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Table doesn't contain a partition for us. Keep a flag
|
|
* remembering us to warn before it is destroyed.
|
|
*/
|
|
mbrpt_nobsd = 1;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
#ifdef __arm32__
|
|
/*
|
|
* static int filecore_checksum(u_char *bootblock)
|
|
*
|
|
* Calculates the filecore boot block checksum. This is used to validate
|
|
* a filecore boot block on the disk. If a boot block is validated then
|
|
* it is used to locate the partition table. If the boot block is not
|
|
* validated, it is assumed that the whole disk is NetBSD.
|
|
*
|
|
* The basic algorithm is:
|
|
*
|
|
* for (each byte in block, excluding checksum) {
|
|
* sum += byte;
|
|
* if (sum > 255)
|
|
* sum -= 255;
|
|
* }
|
|
*
|
|
* That's equivalent to summing all of the bytes in the block
|
|
* (excluding the checksum byte, of course), then calculating the
|
|
* checksum as "cksum = sum - ((sum - 1) / 255) * 255)". That
|
|
* expression may or may not yield a faster checksum function,
|
|
* but it's easier to reason about.
|
|
*
|
|
* Note that if you have a block filled with bytes of a single
|
|
* value "X" (regardless of that value!) and calculate the cksum
|
|
* of the block (excluding the checksum byte), you will _always_
|
|
* end up with a checksum of X. (Do the math; that can be derived
|
|
* from the checksum calculation function!) That means that
|
|
* blocks which contain bytes which all have the same value will
|
|
* always checksum properly. That's a _very_ unlikely occurence
|
|
* (probably impossible, actually) for a valid filecore boot block,
|
|
* so we treat such blocks as invalid.
|
|
*/
|
|
static int
|
|
filecore_checksum(bootblock)
|
|
u_char *bootblock;
|
|
{
|
|
u_char byte0, accum_diff;
|
|
u_int sum;
|
|
int i;
|
|
|
|
sum = 0;
|
|
accum_diff = 0;
|
|
byte0 = bootblock[0];
|
|
|
|
/*
|
|
* Sum the contents of the block, keeping track of whether
|
|
* or not all bytes are the same. If 'accum_diff' ends up
|
|
* being zero, all of the bytes are, in fact, the same.
|
|
*/
|
|
for (i = 0; i < 511; ++i) {
|
|
sum += bootblock[i];
|
|
accum_diff |= bootblock[i] ^ byte0;
|
|
}
|
|
|
|
/*
|
|
* Check to see if the checksum byte is the same as the
|
|
* rest of the bytes, too. (Note that if all of the bytes
|
|
* are the same except the checksum, a checksum compare
|
|
* won't succeed, but that's not our problem.)
|
|
*/
|
|
accum_diff |= bootblock[i] ^ byte0;
|
|
|
|
/* All bytes in block are the same; call it invalid. */
|
|
if (accum_diff == 0)
|
|
return (-1);
|
|
|
|
return (sum - ((sum - 1) / 255) * 255);
|
|
}
|
|
|
|
/*
|
|
* Fetch filecore bootblock from disk and analyse it
|
|
*/
|
|
|
|
static u_int
|
|
get_filecore_partition(f)
|
|
int f;
|
|
{
|
|
static char bb[DEV_BSIZE];
|
|
struct filecore_bootblock *fcbb;
|
|
u_int offset;
|
|
|
|
if (lseek(f, (off_t)FILECORE_BOOT_SECTOR * DEV_BSIZE, SEEK_SET) < 0 ||
|
|
read(f, bb, sizeof(bb)) < sizeof(bb))
|
|
err(4, "can't read filecore boot block");
|
|
fcbb = (struct filecore_bootblock *)bb;
|
|
|
|
/* Check if table is valid. */
|
|
if (filecore_checksum(bb) != fcbb->checksum)
|
|
return (0);
|
|
|
|
/*
|
|
* Check for NetBSD/arm32 (RiscBSD) partition marker.
|
|
* If found the NetBSD disklabel location is easy.
|
|
*/
|
|
offset = (fcbb->partition_cyl_low + (fcbb->partition_cyl_high << 8))
|
|
* fcbb->heads * fcbb->secspertrack;
|
|
if (fcbb->partition_type == PARTITION_FORMAT_RISCBSD)
|
|
return (offset);
|
|
else if (fcbb->partition_type == PARTITION_FORMAT_RISCIX) {
|
|
struct riscix_partition_table *riscix_part;
|
|
int loop;
|
|
|
|
/*
|
|
* Read the RISCiX partition table and search for the
|
|
* first partition named "RiscBSD", "NetBSD", or "Empty:"
|
|
*
|
|
* XXX is use of 'Empty:' really desirable?! -- cgd
|
|
*/
|
|
|
|
if (lseek(f, (off_t)offset * DEV_BSIZE, SEEK_SET) < 0 ||
|
|
read(f, bb, sizeof(bb)) < sizeof(bb))
|
|
err(4, "can't read riscix partition table");
|
|
riscix_part = (struct riscix_partition_table *)bb;
|
|
|
|
for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) {
|
|
if (strcmp(riscix_part->partitions[loop].rp_name,
|
|
"RiscBSD") == 0 ||
|
|
strcmp(riscix_part->partitions[loop].rp_name,
|
|
"NetBSD") == 0 ||
|
|
strcmp(riscix_part->partitions[loop].rp_name,
|
|
"Empty:") == 0) {
|
|
offset = riscix_part->partitions[loop].rp_start;
|
|
break;
|
|
}
|
|
}
|
|
if (loop == NRISCIX_PARTITIONS) {
|
|
/*
|
|
* Valid filecore boot block, RISCiX partition table
|
|
* but no NetBSD partition. We should leave this
|
|
* disc alone.
|
|
*/
|
|
errx(4, "cannot label: no NetBSD partition found"
|
|
" in RISCiX partition table");
|
|
}
|
|
return (offset);
|
|
} else {
|
|
/*
|
|
* Valid filecore boot block and no non-ADFS partition.
|
|
* This means that the whole disc is allocated for ADFS
|
|
* so do not trash ! If the user really wants to put a
|
|
* NetBSD disklabel on the disc then they should remove
|
|
* the filecore boot block first with dd.
|
|
*/
|
|
errx(4, "cannot label: filecore-only disk"
|
|
" (no non-ADFS partition)");
|
|
}
|
|
return (0);
|
|
}
|
|
#endif /* __arm32__ */
|
|
|
|
/*
|
|
* Fetch disklabel for disk.
|
|
* Use ioctl to get label unless -r flag is given.
|
|
*/
|
|
static struct disklabel *
|
|
readlabel(f)
|
|
int f;
|
|
{
|
|
struct disklabel *lp;
|
|
|
|
if (rflag) {
|
|
char *msg;
|
|
off_t sectoffset = 0;
|
|
|
|
#ifdef __i386__
|
|
if (dosdp)
|
|
sectoffset = (off_t)dosdp->mbrp_start * DEV_BSIZE;
|
|
#endif
|
|
#ifdef __arm32__
|
|
/* XXX */
|
|
sectoffset = (off_t)filecore_partition_offset * DEV_BSIZE;
|
|
#endif /* __arm32__ */
|
|
if (lseek(f, sectoffset, SEEK_SET) < 0 ||
|
|
read(f, bootarea, BBSIZE) < BBSIZE)
|
|
err(4, "%s", specname);
|
|
msg = "no disk label";
|
|
for (lp = (struct disklabel *)bootarea;
|
|
lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
|
|
lp = (struct disklabel *)((char *)lp + sizeof(long))) {
|
|
if (lp->d_magic == DISKMAGIC &&
|
|
lp->d_magic2 == DISKMAGIC) {
|
|
if (lp->d_npartitions <= MAXPARTITIONS &&
|
|
dkcksum(lp) == 0)
|
|
return (lp);
|
|
msg = "disk label corrupted";
|
|
}
|
|
}
|
|
/* lp = (struct disklabel *)(bootarea + LABELOFFSET); */
|
|
errx(1, msg);
|
|
} else {
|
|
lp = &lab;
|
|
if (ioctl(f, DIOCGDINFO, lp) < 0)
|
|
err(4, "ioctl DIOCGDINFO");
|
|
}
|
|
return (lp);
|
|
}
|
|
|
|
/*
|
|
* Construct a bootarea (d_bbsize bytes) in the specified buffer ``boot''
|
|
* Returns a pointer to the disklabel portion of the bootarea.
|
|
*/
|
|
static struct disklabel *
|
|
makebootarea(boot, dp, f)
|
|
char *boot;
|
|
struct disklabel *dp;
|
|
int f;
|
|
{
|
|
struct disklabel *lp;
|
|
char *p;
|
|
#if NUMBOOT > 0
|
|
int b;
|
|
char *dkbasename;
|
|
# if NUMBOOT <= 1
|
|
struct stat sb;
|
|
# endif
|
|
#endif
|
|
|
|
/* XXX */
|
|
if (dp->d_secsize == 0) {
|
|
dp->d_secsize = DEV_BSIZE;
|
|
dp->d_bbsize = BBSIZE;
|
|
}
|
|
lp = (struct disklabel *)
|
|
(boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET);
|
|
(void) memset(lp, 0, sizeof *lp);
|
|
#ifdef SAVEBOOTAREA
|
|
/*
|
|
* We must read the current bootarea so we don't clobber the
|
|
* existing boot block, if any.
|
|
*/
|
|
if (rflag) {
|
|
off_t sectoffset = 0;
|
|
|
|
if (lseek(f, sectoffset, SEEK_SET) < 0 ||
|
|
read(f, boot, BBSIZE) < BBSIZE)
|
|
err(4, "%s", specname);
|
|
(void) memset(lp, 0, sizeof *lp);
|
|
}
|
|
#endif
|
|
#if NUMBOOT > 0
|
|
/*
|
|
* If we are not installing a boot program but we are installing a
|
|
* label on disk then we must read the current bootarea so we don't
|
|
* clobber the existing boot.
|
|
*/
|
|
if (!installboot) {
|
|
if (rflag) {
|
|
off_t sectoffset = 0;
|
|
|
|
#ifdef __i386__
|
|
if (dosdp)
|
|
sectoffset = (off_t)dosdp->mbrp_start * DEV_BSIZE;
|
|
#endif
|
|
#ifdef __arm32__
|
|
/* XXX */
|
|
sectoffset = (off_t)filecore_partition_offset
|
|
* DEV_BSIZE;
|
|
#endif /* __arm32__ */
|
|
if (lseek(f, sectoffset, SEEK_SET) < 0 ||
|
|
read(f, boot, BBSIZE) < BBSIZE)
|
|
err(4, "%s", specname);
|
|
(void) memset(lp, 0, sizeof *lp);
|
|
}
|
|
return (lp);
|
|
}
|
|
/*
|
|
* We are installing a boot program. Determine the name(s) and
|
|
* read them into the appropriate places in the boot area.
|
|
*/
|
|
if (!xxboot || !bootxx) {
|
|
dkbasename = np;
|
|
if ((p = strrchr(dkname, '/')) == NULL)
|
|
p = dkname;
|
|
else
|
|
p++;
|
|
while (*p && !isdigit(*p))
|
|
*np++ = *p++;
|
|
*np++ = '\0';
|
|
|
|
if (!xxboot) {
|
|
(void)sprintf(np, "%s/%sboot",
|
|
_PATH_BOOTDIR, dkbasename);
|
|
if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
|
|
dkbasename++;
|
|
xxboot = np;
|
|
(void)sprintf(xxboot, "%s/%sboot",
|
|
_PATH_BOOTDIR, dkbasename);
|
|
np += strlen(xxboot) + 1;
|
|
}
|
|
#if NUMBOOT > 1
|
|
if (!bootxx) {
|
|
(void)sprintf(np, "%s/boot%s",
|
|
_PATH_BOOTDIR, dkbasename);
|
|
if (access(np, F_OK) < 0 && dkbasename[0] == 'r')
|
|
dkbasename++;
|
|
bootxx = np;
|
|
(void)sprintf(bootxx, "%s/boot%s",
|
|
_PATH_BOOTDIR, dkbasename);
|
|
np += strlen(bootxx) + 1;
|
|
}
|
|
#endif
|
|
}
|
|
#ifdef DEBUG
|
|
if (debug)
|
|
warnx("bootstraps: xxboot = %s, bootxx = %s", xxboot,
|
|
bootxx ? bootxx : "NONE");
|
|
#endif
|
|
|
|
/*
|
|
* Strange rules:
|
|
* 1. One-piece bootstrap (hp300/hp800)
|
|
* up to d_bbsize bytes of ``xxboot'' go in bootarea, the rest
|
|
* is remembered and written later following the bootarea.
|
|
* 2. Two-piece bootstraps (vax/i386?/mips?)
|
|
* up to d_secsize bytes of ``xxboot'' go in first d_secsize
|
|
* bytes of bootarea, remaining d_bbsize-d_secsize filled
|
|
* from ``bootxx''.
|
|
*/
|
|
b = open(xxboot, O_RDONLY);
|
|
if (b < 0)
|
|
err(4, "%s", xxboot);
|
|
#if NUMBOOT > 1
|
|
if (read(b, boot, (int)dp->d_secsize) < 0)
|
|
err(4, "%s", xxboot);
|
|
(void)close(b);
|
|
b = open(bootxx, O_RDONLY);
|
|
if (b < 0)
|
|
err(4, "%s", bootxx);
|
|
if (read(b, &boot[dp->d_secsize],
|
|
(int)(dp->d_bbsize-dp->d_secsize)) < 0)
|
|
err(4, "%s", bootxx);
|
|
#else
|
|
if (read(b, boot, (int)dp->d_bbsize) < 0)
|
|
err(4, "%s", xxboot);
|
|
(void)fstat(b, &sb);
|
|
bootsize = (int)sb.st_size - dp->d_bbsize;
|
|
if (bootsize > 0) {
|
|
/* XXX assume d_secsize is a power of two */
|
|
bootsize = (bootsize + dp->d_secsize-1) & ~(dp->d_secsize-1);
|
|
bootbuf = (char *)malloc((size_t)bootsize);
|
|
if (bootbuf == 0)
|
|
err(4, "%s", xxboot);
|
|
if (read(b, bootbuf, bootsize) < 0) {
|
|
free(bootbuf);
|
|
err(4, "%s", xxboot);
|
|
}
|
|
}
|
|
#endif
|
|
(void)close(b);
|
|
#endif
|
|
/*
|
|
* Make sure no part of the bootstrap is written in the area
|
|
* reserved for the label.
|
|
*/
|
|
for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel); p++)
|
|
if (*p)
|
|
errx(2, "Bootstrap doesn't leave room for disk label");
|
|
return (lp);
|
|
}
|
|
|
|
static void
|
|
makedisktab(f, lp)
|
|
FILE *f;
|
|
struct disklabel *lp;
|
|
{
|
|
int i;
|
|
char *did = "\\\n\t:";
|
|
struct partition *pp;
|
|
|
|
(void) fprintf(f, "%.*s|Automatically generated label:\\\n\t:dt=",
|
|
(int) sizeof(lp->d_typename), lp->d_typename);
|
|
if ((unsigned) lp->d_type < DKMAXTYPES)
|
|
(void) fprintf(f, "%s:", dktypenames[lp->d_type]);
|
|
else
|
|
(void) fprintf(f, "unknown%d:", lp->d_type);
|
|
|
|
(void) fprintf(f, "se#%d:", lp->d_secsize);
|
|
(void) fprintf(f, "ns#%d:", lp->d_nsectors);
|
|
(void) fprintf(f, "nt#%d:", lp->d_ntracks);
|
|
(void) fprintf(f, "sc#%d:", lp->d_secpercyl);
|
|
(void) fprintf(f, "nc#%d:", lp->d_ncylinders);
|
|
|
|
if ((lp->d_secpercyl * lp->d_ncylinders) != lp->d_secperunit) {
|
|
(void) fprintf(f, "%ssu#%d:", did, lp->d_secperunit);
|
|
did = "";
|
|
}
|
|
if (lp->d_rpm != 3600) {
|
|
(void) fprintf(f, "%srm#%d:", did, lp->d_rpm);
|
|
did = "";
|
|
}
|
|
if (lp->d_interleave != 1) {
|
|
(void) fprintf(f, "%sil#%d:", did, lp->d_interleave);
|
|
did = "";
|
|
}
|
|
if (lp->d_trackskew != 0) {
|
|
(void) fprintf(f, "%ssk#%d:", did, lp->d_trackskew);
|
|
did = "";
|
|
}
|
|
if (lp->d_cylskew != 0) {
|
|
(void) fprintf(f, "%scs#%d:", did, lp->d_cylskew);
|
|
did = "";
|
|
}
|
|
if (lp->d_headswitch != 0) {
|
|
(void) fprintf(f, "%shs#%d:", did, lp->d_headswitch);
|
|
did = "";
|
|
}
|
|
if (lp->d_trkseek != 0) {
|
|
(void) fprintf(f, "%sts#%d:", did, lp->d_trkseek);
|
|
did = "";
|
|
}
|
|
#ifdef notyet
|
|
(void) fprintf(f, "drivedata: ");
|
|
for (i = NDDATA - 1; i >= 0; i--)
|
|
if (lp->d_drivedata[i])
|
|
break;
|
|
if (i < 0)
|
|
i = 0;
|
|
for (j = 0; j <= i; j++)
|
|
(void) fprintf(f, "%d ", lp->d_drivedata[j]);
|
|
#endif
|
|
pp = lp->d_partitions;
|
|
for (i = 0; i < lp->d_npartitions; i++, pp++) {
|
|
if (pp->p_size) {
|
|
char c = 'a' + i;
|
|
(void) fprintf(f, "\\\n\t:");
|
|
(void) fprintf(f, "p%c#%d:", c, pp->p_size);
|
|
(void) fprintf(f, "o%c#%d:", c, pp->p_offset);
|
|
if (pp->p_fstype != FS_UNUSED) {
|
|
if ((unsigned) pp->p_fstype < FSMAXTYPES)
|
|
(void) fprintf(f, "t%c=%s:", c,
|
|
fstypenames[pp->p_fstype]);
|
|
else
|
|
(void) fprintf(f, "t%c=unknown%d:",
|
|
c, pp->p_fstype);
|
|
}
|
|
switch (pp->p_fstype) {
|
|
|
|
case FS_UNUSED:
|
|
break;
|
|
|
|
case FS_BSDFFS:
|
|
case FS_BSDLFS:
|
|
case FS_EX2FS:
|
|
case FS_ADOS:
|
|
(void) fprintf(f, "b%c#%d:", c,
|
|
pp->p_fsize * pp->p_frag);
|
|
(void) fprintf(f, "f%c#%d:", c, pp->p_fsize);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
(void) fprintf(f, "\n");
|
|
(void) fflush(f);
|
|
}
|
|
|
|
static void
|
|
showinfo(f, lp)
|
|
FILE *f;
|
|
struct disklabel *lp;
|
|
{
|
|
int i, j;
|
|
|
|
(void) fprintf(f, "# %s:\n", specname);
|
|
if ((unsigned) lp->d_type < DKMAXTYPES)
|
|
(void) fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
|
|
else
|
|
(void) fprintf(f, "type: %d\n", lp->d_type);
|
|
(void) fprintf(f, "disk: %.*s\n", (int) sizeof(lp->d_typename),
|
|
lp->d_typename);
|
|
(void) fprintf(f, "label: %.*s\n", (int) sizeof(lp->d_packname),
|
|
lp->d_packname);
|
|
(void) fprintf(f, "flags:");
|
|
if (lp->d_flags & D_REMOVABLE)
|
|
(void) fprintf(f, " removable");
|
|
if (lp->d_flags & D_ECC)
|
|
(void) fprintf(f, " ecc");
|
|
if (lp->d_flags & D_BADSECT)
|
|
(void) fprintf(f, " badsect");
|
|
(void) fprintf(f, "\n");
|
|
(void) fprintf(f, "bytes/sector: %ld\n", (long) lp->d_secsize);
|
|
(void) fprintf(f, "sectors/track: %ld\n", (long) lp->d_nsectors);
|
|
(void) fprintf(f, "tracks/cylinder: %ld\n", (long) lp->d_ntracks);
|
|
(void) fprintf(f, "sectors/cylinder: %ld\n", (long) lp->d_secpercyl);
|
|
(void) fprintf(f, "cylinders: %ld\n", (long) lp->d_ncylinders);
|
|
(void) fprintf(f, "total sectors: %ld\n", (long) lp->d_secperunit);
|
|
(void) fprintf(f, "rpm: %ld\n", (long) lp->d_rpm);
|
|
(void) fprintf(f, "interleave: %ld\n", (long) lp->d_interleave);
|
|
(void) fprintf(f, "trackskew: %ld\n", (long) lp->d_trackskew);
|
|
(void) fprintf(f, "cylinderskew: %ld\n", (long) lp->d_cylskew);
|
|
(void) fprintf(f, "headswitch: %ld\t\t# milliseconds\n",
|
|
(long) lp->d_headswitch);
|
|
(void) fprintf(f, "track-to-track seek: %ld\t# milliseconds\n",
|
|
(long) lp->d_trkseek);
|
|
(void) fprintf(f, "drivedata: ");
|
|
for (i = NDDATA - 1; i >= 0; i--)
|
|
if (lp->d_drivedata[i])
|
|
break;
|
|
if (i < 0)
|
|
i = 0;
|
|
for (j = 0; j <= i; j++)
|
|
(void) fprintf(f, "%d ", lp->d_drivedata[j]);
|
|
(void) fprintf(f, "\n\n");
|
|
(void) fflush(f);
|
|
}
|
|
|
|
void
|
|
showpartitions(f, lp)
|
|
FILE *f;
|
|
struct disklabel *lp;
|
|
{
|
|
int i;
|
|
struct partition *pp;
|
|
|
|
(void) fprintf(f, "%d partitions:\n", lp->d_npartitions);
|
|
(void) fprintf(f,
|
|
"# size offset fstype [fsize bsize cpg]\n");
|
|
pp = lp->d_partitions;
|
|
for (i = 0; i < lp->d_npartitions; i++, pp++) {
|
|
if (pp->p_size) {
|
|
if (Cflag && lp->d_secpercyl && lp->d_nsectors) {
|
|
char sbuf[32], obuf[32];
|
|
sprintf(sbuf, "%d/%d/%d",
|
|
pp->p_size/lp->d_secpercyl,
|
|
(pp->p_size%lp->d_secpercyl) /
|
|
lp->d_nsectors,
|
|
pp->p_size%lp->d_nsectors);
|
|
|
|
sprintf(obuf, "%d/%d/%d",
|
|
pp->p_offset/lp->d_secpercyl,
|
|
(pp->p_offset%lp->d_secpercyl) /
|
|
lp->d_nsectors,
|
|
pp->p_offset%lp->d_nsectors);
|
|
(void) fprintf(f, " %c: %8s %8s ",
|
|
'a' + i, sbuf, obuf);
|
|
} else
|
|
(void) fprintf(f, " %c: %8d %8d ", 'a' + i,
|
|
pp->p_size, pp->p_offset);
|
|
if ((unsigned) pp->p_fstype < FSMAXTYPES)
|
|
(void) fprintf(f, "%10.10s",
|
|
fstypenames[pp->p_fstype]);
|
|
else
|
|
(void) fprintf(f, "%10d", pp->p_fstype);
|
|
switch (pp->p_fstype) {
|
|
|
|
case FS_UNUSED: /* XXX */
|
|
(void) fprintf(f, " %5d %5d %5.5s ",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag, "");
|
|
break;
|
|
|
|
case FS_BSDFFS:
|
|
case FS_ADOS:
|
|
(void) fprintf(f, " %5d %5d %5d ",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag,
|
|
pp->p_cpg);
|
|
break;
|
|
|
|
case FS_BSDLFS:
|
|
case FS_EX2FS:
|
|
(void) fprintf(f, " %5d %5d ",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag);
|
|
break;
|
|
|
|
default:
|
|
(void) fprintf(f, "%22.22s", "");
|
|
break;
|
|
}
|
|
if (lp->d_secpercyl != 0) {
|
|
(void) fprintf(f, " # (Cyl. %4d",
|
|
pp->p_offset / lp->d_secpercyl);
|
|
if (pp->p_offset % lp->d_secpercyl)
|
|
putc('*', f);
|
|
else
|
|
putc(' ', f);
|
|
(void) fprintf(f, "- %d",
|
|
(pp->p_offset +
|
|
pp->p_size + lp->d_secpercyl - 1) /
|
|
lp->d_secpercyl - 1);
|
|
if ((pp->p_offset + pp->p_size)
|
|
% lp->d_secpercyl)
|
|
putc('*', f);
|
|
(void) fprintf(f, ")\n");
|
|
} else
|
|
(void) fprintf(f, "\n");
|
|
}
|
|
}
|
|
(void) fflush(f);
|
|
}
|
|
|
|
static int
|
|
edit(lp, f)
|
|
struct disklabel *lp;
|
|
int f;
|
|
{
|
|
int first, ch, fd;
|
|
struct disklabel label;
|
|
FILE *fp;
|
|
|
|
if ((fd = mkstemp(tmpfil)) == -1 || (fp = fdopen(fd, "w")) == NULL) {
|
|
warn("%s", tmpfil);
|
|
return (1);
|
|
}
|
|
(void)fchmod(fd, 0600);
|
|
showinfo(fp, lp);
|
|
showpartitions(fp, lp);
|
|
(void) fclose(fp);
|
|
for (;;) {
|
|
if (!editit())
|
|
break;
|
|
fp = fopen(tmpfil, "r");
|
|
if (fp == NULL) {
|
|
warn("%s", tmpfil);
|
|
break;
|
|
}
|
|
(void) memset(&label, 0, sizeof(label));
|
|
if (getasciilabel(fp, &label)) {
|
|
*lp = label;
|
|
if (writelabel(f, bootarea, lp) == 0) {
|
|
(void) unlink(tmpfil);
|
|
return (0);
|
|
}
|
|
}
|
|
(void) printf("re-edit the label? [y]: ");
|
|
(void) fflush(stdout);
|
|
first = ch = getchar();
|
|
while (ch != '\n' && ch != EOF)
|
|
ch = getchar();
|
|
if (first == 'n' || first == 'N')
|
|
break;
|
|
}
|
|
(void)unlink(tmpfil);
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
editit()
|
|
{
|
|
int pid, xpid;
|
|
int stat;
|
|
sigset_t sigset, osigset;
|
|
|
|
sigemptyset(&sigset);
|
|
sigaddset(&sigset, SIGINT);
|
|
sigaddset(&sigset, SIGQUIT);
|
|
sigaddset(&sigset, SIGHUP);
|
|
sigprocmask(SIG_BLOCK, &sigset, &osigset);
|
|
while ((pid = fork()) < 0) {
|
|
if (errno != EAGAIN) {
|
|
sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
|
|
warn("fork");
|
|
return (0);
|
|
}
|
|
sleep(1);
|
|
}
|
|
if (pid == 0) {
|
|
char *ed;
|
|
|
|
sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
|
|
setgid(getgid());
|
|
setuid(getuid());
|
|
if ((ed = getenv("EDITOR")) == (char *)0)
|
|
ed = DEFEDITOR;
|
|
execlp(ed, ed, tmpfil, 0);
|
|
perror(ed);
|
|
exit(1);
|
|
}
|
|
while ((xpid = wait(&stat)) >= 0)
|
|
if (xpid == pid)
|
|
break;
|
|
sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
|
|
return(!stat);
|
|
}
|
|
|
|
static char *
|
|
skip(cp)
|
|
char *cp;
|
|
{
|
|
|
|
cp += strspn(cp, " \t");
|
|
if (*cp == '\0')
|
|
return (NULL);
|
|
return (cp);
|
|
}
|
|
|
|
static char *
|
|
word(cp)
|
|
char *cp;
|
|
{
|
|
if (cp == NULL || *cp == '\0')
|
|
return (NULL);
|
|
|
|
cp += strcspn(cp, " \t");
|
|
if (*cp == '\0')
|
|
return (NULL);
|
|
*cp++ = '\0';
|
|
cp += strspn(cp, " \t");
|
|
if (*cp == '\0')
|
|
return (NULL);
|
|
return (cp);
|
|
}
|
|
|
|
/*
|
|
* Read an ascii label in from fd f,
|
|
* in the same format as that put out by showinfo() and showpartitions(),
|
|
* and fill in lp.
|
|
*/
|
|
static int
|
|
getasciilabel(f, lp)
|
|
FILE *f;
|
|
struct disklabel *lp;
|
|
{
|
|
const char *const *cpp, *s;
|
|
char *cp;
|
|
struct partition *pp;
|
|
char *tp, line[BUFSIZ];
|
|
int v, lineno = 0, errors = 0;
|
|
|
|
lp->d_bbsize = BBSIZE; /* XXX */
|
|
lp->d_sbsize = SBSIZE; /* XXX */
|
|
while (fgets(line, sizeof(line) - 1, f)) {
|
|
lineno++;
|
|
if ((cp = strpbrk(line, "#\r\n")) != NULL)
|
|
*cp = '\0';
|
|
cp = skip(line);
|
|
if (cp == NULL) /* blank line or comment line */
|
|
continue;
|
|
tp = strchr(cp, ':'); /* everything has a colon in it */
|
|
if (tp == NULL) {
|
|
warnx("line %d: syntax error", lineno);
|
|
errors++;
|
|
continue;
|
|
}
|
|
*tp++ = '\0', tp = skip(tp);
|
|
if (!strcmp(cp, "type")) {
|
|
if (tp == NULL)
|
|
tp = "unknown";
|
|
cpp = dktypenames;
|
|
for (; cpp < &dktypenames[DKMAXTYPES]; cpp++)
|
|
if ((s = *cpp) && !strcmp(s, tp)) {
|
|
lp->d_type = cpp - dktypenames;
|
|
goto next;
|
|
}
|
|
v = atoi(tp);
|
|
if ((unsigned)v >= DKMAXTYPES)
|
|
warnx("line %d: warning, unknown disk type: %s",
|
|
lineno, tp);
|
|
lp->d_type = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "flags")) {
|
|
for (v = 0; (cp = tp) && *cp != '\0';) {
|
|
tp = word(cp);
|
|
if (!strcmp(cp, "removable"))
|
|
v |= D_REMOVABLE;
|
|
else if (!strcmp(cp, "ecc"))
|
|
v |= D_ECC;
|
|
else if (!strcmp(cp, "badsect"))
|
|
v |= D_BADSECT;
|
|
else {
|
|
warnx("line %d: bad flag: %s",
|
|
lineno, cp);
|
|
errors++;
|
|
}
|
|
}
|
|
lp->d_flags = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "drivedata")) {
|
|
int i;
|
|
|
|
for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) {
|
|
lp->d_drivedata[i++] = atoi(cp);
|
|
tp = word(cp);
|
|
}
|
|
continue;
|
|
}
|
|
if (sscanf(cp, "%d partitions", &v) == 1) {
|
|
if (v == 0 || (unsigned)v > MAXPARTITIONS) {
|
|
warnx("line %d: bad # of partitions", lineno);
|
|
lp->d_npartitions = MAXPARTITIONS;
|
|
errors++;
|
|
} else
|
|
lp->d_npartitions = v;
|
|
continue;
|
|
}
|
|
if (tp == NULL)
|
|
tp = "";
|
|
if (!strcmp(cp, "disk")) {
|
|
strncpy(lp->d_typename, tp, sizeof (lp->d_typename));
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "label")) {
|
|
strncpy(lp->d_packname, tp, sizeof (lp->d_packname));
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "bytes/sector")) {
|
|
v = atoi(tp);
|
|
if (v <= 0 || (v % 512) != 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_secsize = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "sectors/track")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_nsectors = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "sectors/cylinder")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_secpercyl = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "tracks/cylinder")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_ntracks = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "cylinders")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_ncylinders = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "total sectors")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_secperunit = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "rpm")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_rpm = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "interleave")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_interleave = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "trackskew")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_trackskew = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "cylinderskew")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_cylskew = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "headswitch")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_headswitch = v;
|
|
continue;
|
|
}
|
|
if (!strcmp(cp, "track-to-track seek")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_trkseek = v;
|
|
continue;
|
|
}
|
|
if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') {
|
|
unsigned part = *cp - 'a';
|
|
|
|
if (part > lp->d_npartitions) {
|
|
warnx("line %d: bad partition name: %s",
|
|
lineno, cp);
|
|
errors++;
|
|
continue;
|
|
}
|
|
pp = &lp->d_partitions[part];
|
|
#define _CHECKLINE \
|
|
if (tp == NULL || *tp == '\0') { \
|
|
warnx("line %d: too few fields", lineno); \
|
|
errors++; \
|
|
break; \
|
|
}
|
|
#define NXTNUM(n) { \
|
|
_CHECKLINE \
|
|
cp = tp, tp = word(cp), (n) = (cp != NULL ? atoi(cp) : 0); \
|
|
}
|
|
#define NXTXNUM(n) { \
|
|
char *ptr; \
|
|
int m; \
|
|
_CHECKLINE \
|
|
cp = tp, tp = word(cp); \
|
|
m = (int)strtol(cp, &ptr, 10); \
|
|
if (*ptr == '\0') \
|
|
(n) = m; \
|
|
else { \
|
|
if (*ptr++ != '/') { \
|
|
warnx("line %d: invalid format", lineno); \
|
|
errors++; \
|
|
break; \
|
|
} \
|
|
(n) = m * lp->d_secpercyl; \
|
|
m = (int)strtol(ptr, &ptr, 10); \
|
|
if (*ptr++ != '/') { \
|
|
warnx("line %d: invalid format", lineno); \
|
|
errors++; \
|
|
break; \
|
|
} \
|
|
(n) += m * lp->d_nsectors; \
|
|
m = (int)strtol(ptr, &ptr, 10); \
|
|
(n) += m; \
|
|
} \
|
|
}
|
|
NXTXNUM(v);
|
|
if (v < 0) {
|
|
warnx("line %d: bad partition size: %s",
|
|
lineno, cp);
|
|
errors++;
|
|
} else
|
|
pp->p_size = v;
|
|
NXTXNUM(v);
|
|
if (v < 0) {
|
|
warnx("line %d: bad partition offset: %s",
|
|
lineno, cp);
|
|
errors++;
|
|
} else
|
|
pp->p_offset = v;
|
|
/* can't use word() here because of blanks
|
|
in fstypenames[] */
|
|
cp = tp;
|
|
cpp = fstypenames;
|
|
for (; cpp < &fstypenames[FSMAXTYPES]; cpp++) {
|
|
s = *cpp;
|
|
if (s == NULL ||
|
|
(cp[strlen(s)] != ' ' &&
|
|
cp[strlen(s)] != '\t' &&
|
|
cp[strlen(s)] != '\0'))
|
|
continue;
|
|
if (!memcmp(s, cp, strlen(s))) {
|
|
pp->p_fstype = cpp - fstypenames;
|
|
tp += strlen(s);
|
|
if (*tp == '\0')
|
|
tp = NULL;
|
|
else {
|
|
tp += strspn(tp, " \t");
|
|
if (*tp == '\0')
|
|
tp = NULL;
|
|
}
|
|
goto gottype;
|
|
}
|
|
}
|
|
tp = word(cp);
|
|
if (isdigit(*cp))
|
|
v = atoi(cp);
|
|
else
|
|
v = FSMAXTYPES;
|
|
if ((unsigned)v >= FSMAXTYPES) {
|
|
warnx("line %d: warning, unknown"
|
|
" filesystem type: %s",
|
|
lineno, cp);
|
|
v = FS_UNUSED;
|
|
}
|
|
pp->p_fstype = v;
|
|
gottype:
|
|
switch (pp->p_fstype) {
|
|
|
|
case FS_UNUSED: /* XXX */
|
|
NXTNUM(pp->p_fsize);
|
|
if (pp->p_fsize == 0)
|
|
break;
|
|
NXTNUM(v);
|
|
pp->p_frag = v / pp->p_fsize;
|
|
break;
|
|
|
|
case FS_BSDFFS:
|
|
case FS_ADOS:
|
|
NXTNUM(pp->p_fsize);
|
|
if (pp->p_fsize == 0)
|
|
break;
|
|
NXTNUM(v);
|
|
pp->p_frag = v / pp->p_fsize;
|
|
NXTNUM(pp->p_cpg);
|
|
break;
|
|
case FS_BSDLFS:
|
|
case FS_EX2FS:
|
|
NXTNUM(pp->p_fsize);
|
|
if (pp->p_fsize == 0)
|
|
break;
|
|
NXTNUM(v);
|
|
pp->p_frag = v / pp->p_fsize;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
warnx("line %d: unknown field: %s", lineno, cp);
|
|
errors++;
|
|
next:
|
|
;
|
|
}
|
|
errors += checklabel(lp);
|
|
return (errors == 0);
|
|
}
|
|
|
|
/*
|
|
* Check disklabel for errors and fill in
|
|
* derived fields according to supplied values.
|
|
*/
|
|
int
|
|
checklabel(lp)
|
|
struct disklabel *lp;
|
|
{
|
|
struct partition *pp;
|
|
int i, errors = 0;
|
|
char part;
|
|
|
|
if (lp->d_secsize == 0) {
|
|
warnx("sector size %d", lp->d_secsize);
|
|
return (1);
|
|
}
|
|
if (lp->d_nsectors == 0) {
|
|
warnx("sectors/track %d", lp->d_nsectors);
|
|
return (1);
|
|
}
|
|
if (lp->d_ntracks == 0) {
|
|
warnx("tracks/cylinder %d", lp->d_ntracks);
|
|
return (1);
|
|
}
|
|
if (lp->d_ncylinders == 0) {
|
|
warnx("cylinders/unit %d", lp->d_ncylinders);
|
|
errors++;
|
|
}
|
|
if (lp->d_rpm == 0)
|
|
warnx("warning, revolutions/minute %d", lp->d_rpm);
|
|
if (lp->d_secpercyl == 0)
|
|
lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
|
|
if (lp->d_secperunit == 0)
|
|
lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders;
|
|
#ifdef __i386__notyet__
|
|
if (dosdp && lp->d_secperunit > dosdp->mbrp_start + dosdp->mbrp_size) {
|
|
warnx("exceeds DOS partition size");
|
|
errors++;
|
|
lp->d_secperunit = dosdp->mbrp_start + dosdp->mbrp_size;
|
|
}
|
|
/* XXX should also check geometry against BIOS's idea */
|
|
#endif
|
|
#ifdef __arm32__notyet__
|
|
/* XXX similar code as for i386 */
|
|
#endif
|
|
if (lp->d_bbsize == 0) {
|
|
warnx("boot block size %d", lp->d_bbsize);
|
|
errors++;
|
|
} else if (lp->d_bbsize % lp->d_secsize)
|
|
warnx("warning, boot block size %% sector-size != 0");
|
|
if (lp->d_sbsize == 0) {
|
|
warnx("super block size %d", lp->d_sbsize);
|
|
errors++;
|
|
} else if (lp->d_sbsize % lp->d_secsize)
|
|
warnx("warning, super block size %% sector-size != 0");
|
|
if (lp->d_npartitions > MAXPARTITIONS)
|
|
warnx("warning, number of partitions (%d) > MAXPARTITIONS (%d)",
|
|
lp->d_npartitions, MAXPARTITIONS);
|
|
for (i = 0; i < lp->d_npartitions; i++) {
|
|
part = 'a' + i;
|
|
pp = &lp->d_partitions[i];
|
|
if (pp->p_size == 0 && pp->p_offset != 0)
|
|
warnx("warning, partition %c: size 0, but offset %d",
|
|
part, pp->p_offset);
|
|
#ifdef STRICT_CYLINDER_ALIGNMENT
|
|
if (pp->p_offset % lp->d_secpercyl) {
|
|
warnx("warning, partition %c:"
|
|
" offset %% cylinder-size != 0",
|
|
part);
|
|
errors++;
|
|
}
|
|
#endif
|
|
if (pp->p_offset > lp->d_secperunit) {
|
|
warnx("partition %c: offset past end of unit", part);
|
|
errors++;
|
|
}
|
|
if (pp->p_offset + pp->p_size > lp->d_secperunit) {
|
|
warnx("partition %c: partition extends"
|
|
" past end of unit",
|
|
part);
|
|
errors++;
|
|
}
|
|
}
|
|
for (; i < MAXPARTITIONS; i++) {
|
|
part = 'a' + i;
|
|
pp = &lp->d_partitions[i];
|
|
if (pp->p_size || pp->p_offset)
|
|
warnx("warning, unused partition %c: size %d offset %d",
|
|
'a' + i, pp->p_size, pp->p_offset);
|
|
}
|
|
return (errors);
|
|
}
|
|
|
|
#if NUMBOOT > 0
|
|
/*
|
|
* If we are installing a boot program that doesn't fit in d_bbsize
|
|
* we need to mark those partitions that the boot overflows into.
|
|
* This allows newfs to prevent creation of a filesystem where it might
|
|
* clobber bootstrap code.
|
|
*/
|
|
static void
|
|
setbootflag(lp)
|
|
struct disklabel *lp;
|
|
{
|
|
struct partition *pp;
|
|
int i, errors = 0;
|
|
char part;
|
|
u_long boffset;
|
|
|
|
if (bootbuf == 0)
|
|
return;
|
|
boffset = bootsize / lp->d_secsize;
|
|
for (i = 0; i < lp->d_npartitions; i++) {
|
|
part = 'a' + i;
|
|
pp = &lp->d_partitions[i];
|
|
if (pp->p_size == 0)
|
|
continue;
|
|
if (boffset <= pp->p_offset) {
|
|
if (pp->p_fstype == FS_BOOT)
|
|
pp->p_fstype = FS_UNUSED;
|
|
} else if (pp->p_fstype != FS_BOOT) {
|
|
if (pp->p_fstype != FS_UNUSED) {
|
|
warnx("boot overlaps used partition %c",
|
|
part);
|
|
errors++;
|
|
} else {
|
|
pp->p_fstype = FS_BOOT;
|
|
warnx("warning, boot overlaps partition %c, %s",
|
|
part, "marked as FS_BOOT");
|
|
}
|
|
}
|
|
}
|
|
if (errors)
|
|
errx(4, "cannot install boot program");
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
static const struct {
|
|
char *name;
|
|
char *expn;
|
|
} usages[] = {
|
|
{ "%s [-rt] [-C] disk",
|
|
"(to read label)" },
|
|
{ "%s -w [-r] [-f disktab] disk type [ packid ]",
|
|
#if NUMBOOT > 0
|
|
"(to write label with existing boot program)"
|
|
#else
|
|
"(to write label)"
|
|
#endif
|
|
},
|
|
{ "%s -e [-r] [-C] disk",
|
|
"(to edit label)" },
|
|
{ "%s -i [-r] disk",
|
|
"(to create a label interactively)" },
|
|
{ "%s -R [-r] disk protofile",
|
|
#if NUMBOOT > 0
|
|
"(to restore label with existing boot program)"
|
|
#else
|
|
"(to restore label)"
|
|
#endif
|
|
},
|
|
#if NUMBOOT > 0
|
|
# if NUMBOOT > 1
|
|
{ "%s -B [-f disktab] [ -b xxboot [ -s bootxx ] ] disk [ type ]",
|
|
"(to install boot program with existing label)" },
|
|
{ "%s -w -B [-f disktab] [ -b xxboot [ -s bootxx ] ] disk type [ packid ]",
|
|
"(to write label and boot program)" },
|
|
{ "%s -R -B [-f disktab] [ -b xxboot [ -s bootxx ] ] disk protofile [ type ]",
|
|
"(to restore label and boot program)" },
|
|
# else
|
|
{ "%s -B [-f disktab] [ -b bootprog ] disk [ type ]",
|
|
"(to install boot program with existing on-disk label)" },
|
|
{ "%s -w -B [-f disktab] [ -b bootprog ] disk type [ packid ]",
|
|
"(to write label and install boot program)" },
|
|
{ "%s -R -B [-f disktab] [ -b bootprog ] disk protofile [ type ]",
|
|
"(to restore label and install boot program)" },
|
|
# endif
|
|
#endif
|
|
{ "%s [-NW] disk",
|
|
"(to write disable/enable label)" },
|
|
{ NULL,
|
|
NULL }
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; usages[i].name; i++) {
|
|
(void) fputs(i ? "or " : "Usage: ", stderr);
|
|
(void) fprintf(stderr, usages[i].name, __progname);
|
|
(void) fputs("\n\t", stderr);
|
|
(void) fprintf(stderr, usages[i].expn, __progname);
|
|
(void) fputs("\n", stderr);
|
|
}
|
|
exit(1);
|
|
}
|