1336 lines
31 KiB
C
1336 lines
31 KiB
C
/*
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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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#ifndef lint
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static char copyright[] =
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"@(#) 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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static char sccsid[] = "@(#)disklabel.c 8.2 (Berkeley) 1/7/94";
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/* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/signal.h>
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#include <sys/errno.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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#define DKTYPENAMES
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#include <sys/disklabel.h>
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#include <ufs/ffs/fs.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <ctype.h>
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#include "pathnames.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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#ifdef tahoe
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#define RAWPARTITION 'a'
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#else
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#define RAWPARTITION 'c'
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#endif
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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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#ifdef tahoe
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#define NUMBOOT 0
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#else
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#if defined(hp300) || defined(hp800)
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#define NUMBOOT 1
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#else
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#define NUMBOOT 2
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#endif
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#endif
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#define DEFEDITOR _PATH_VI
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#define streq(a,b) (strcmp(a,b) == 0)
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char *dkname;
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char *specname;
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char tmpfil[] = _PATH_TMP;
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extern int errno;
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char namebuf[BBSIZE], *np = namebuf;
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struct disklabel lab;
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struct disklabel *readlabel(), *makebootarea();
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char bootarea[BBSIZE];
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#if NUMBOOT > 0
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int installboot; /* non-zero if we should install a boot program */
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char *bootbuf; /* pointer to buffer with remainder of boot prog */
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int bootsize; /* size of remaining boot program */
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char *xxboot; /* primary boot */
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char *bootxx; /* secondary boot */
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char boot0[MAXPATHLEN];
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char boot1[MAXPATHLEN];
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#endif
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enum {
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UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT
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} op = UNSPEC;
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int rflag;
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#ifdef DEBUG
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int debug;
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#define OPTIONS "BNRWb:ders:w"
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#else
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#define OPTIONS "BNRWb:ers:w"
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#endif
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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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extern char *optarg;
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extern int optind;
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register struct disklabel *lp;
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FILE *t;
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int ch, f, flag, error = 0;
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char *name = 0;
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while ((ch = getopt(argc, argv, OPTIONS)) != EOF)
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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 'N':
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if (op != UNSPEC)
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usage();
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op = NOWRITE;
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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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op = WRITEABLE;
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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 '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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xxboot = bootxx = 0;
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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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if (dkname[0] != '/') {
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(void)sprintf(np, "%sr%s%c", _PATH_DEV, dkname, RAWPARTITION);
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specname = np;
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np += strlen(specname) + 1;
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} else
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specname = dkname;
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f = open(specname, op == READ ? O_RDONLY : O_RDWR);
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if (f < 0 && errno == ENOENT && dkname[0] != '/') {
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(void)sprintf(specname, "%sr%s", _PATH_DEV, dkname);
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np = namebuf + strlen(specname) + 1;
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f = open(specname, op == READ ? O_RDONLY : O_RDWR);
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}
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if (f < 0)
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Perror(specname);
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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 NOWRITE:
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flag = 0;
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if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
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Perror("ioctl DIOCWLABEL");
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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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display(stdout, lp);
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error = checklabel(lp);
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break;
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case RESTORE:
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#if NUMBOOT > 0
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if (installboot && argc == 3) {
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makelabel(argv[2], 0, &lab);
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argc--;
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}
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#endif
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if (argc != 2)
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usage();
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lp = makebootarea(bootarea, &lab, f);
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if (!(t = fopen(argv[1], "r")))
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Perror(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 WRITE:
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if (argc == 3) {
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name = argv[2];
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argc--;
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}
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if (argc != 2)
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usage();
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makelabel(argv[1], name, &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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break;
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case WRITEABLE:
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flag = 1;
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if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0)
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Perror("ioctl DIOCWLABEL");
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break;
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#if NUMBOOT > 0
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case WRITEBOOT:
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{
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struct disklabel tlab;
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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], 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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break;
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}
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#endif
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}
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exit(error);
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}
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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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makelabel(type, name, lp)
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char *type, *name;
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register struct disklabel *lp;
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{
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register struct disklabel *dp;
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char *strcpy();
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dp = getdiskbyname(type);
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if (dp == NULL) {
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fprintf(stderr, "%s: unknown disk type\n", type);
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exit(1);
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}
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*lp = *dp;
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#if NUMBOOT > 0
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/*
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* Set bootstrap name(s).
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* 1. If set from command line, use those,
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* 2. otherwise, check if disktab specifies them (b0 or b1),
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* 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
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*/
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if (!xxboot && lp->d_boot0) {
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if (*lp->d_boot0 != '/')
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(void)sprintf(boot0, "%s/%s",
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_PATH_BOOTDIR, lp->d_boot0);
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else
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(void)strcpy(boot0, lp->d_boot0);
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xxboot = boot0;
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}
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#if NUMBOOT > 1
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if (!bootxx && lp->d_boot1) {
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if (*lp->d_boot1 != '/')
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(void)sprintf(boot1, "%s/%s",
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_PATH_BOOTDIR, lp->d_boot1);
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else
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(void)strcpy(boot1, lp->d_boot1);
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bootxx = boot1;
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}
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#endif
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#endif
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/* d_packname is union d_boot[01], so zero */
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bzero(lp->d_packname, sizeof(lp->d_packname));
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if (name)
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(void)strncpy(lp->d_packname, name, sizeof(lp->d_packname));
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}
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writelabel(f, boot, lp)
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int f;
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char *boot;
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register struct disklabel *lp;
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{
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register int i;
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int flag;
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setbootflag(lp);
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (rflag) {
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/*
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* First set the kernel disk label,
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* then write a label to the raw disk.
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* If the SDINFO ioctl fails because it is unimplemented,
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* keep going; otherwise, the kernel consistency checks
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* may prevent us from changing the current (in-core)
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* label.
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*/
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if (ioctl(f, DIOCSDINFO, lp) < 0 &&
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errno != ENODEV && errno != ENOTTY) {
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l_perror("ioctl DIOCSDINFO");
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return (1);
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}
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(void)lseek(f, (off_t)0, SEEK_SET);
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/*
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* write enable label sector before write (if necessary),
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* disable after writing.
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*/
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flag = 1;
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if (ioctl(f, DIOCWLABEL, &flag) < 0)
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perror("ioctl DIOCWLABEL");
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if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
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perror("write");
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return (1);
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}
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#if NUMBOOT > 0
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/*
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* Output the remainder of the disklabel
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*/
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if (bootbuf && write(f, bootbuf, bootsize) != bootsize) {
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perror("write");
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return(1);
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}
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#endif
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flag = 0;
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(void) ioctl(f, DIOCWLABEL, &flag);
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} else if (ioctl(f, DIOCWDINFO, lp) < 0) {
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l_perror("ioctl DIOCWDINFO");
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return (1);
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}
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#ifdef vax
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if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
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daddr_t alt;
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alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
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for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
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(void)lseek(f, (off_t)((alt + i) * lp->d_secsize),
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SEEK_SET);
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if (write(f, boot, lp->d_secsize) < lp->d_secsize) {
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int oerrno = errno;
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fprintf(stderr, "alternate label %d ", i/2);
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errno = oerrno;
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perror("write");
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}
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}
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}
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#endif
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return (0);
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}
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l_perror(s)
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char *s;
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{
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int saverrno = errno;
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fprintf(stderr, "disklabel: %s: ", s);
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switch (saverrno) {
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case ESRCH:
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fprintf(stderr, "No disk label on disk;\n");
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fprintf(stderr,
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"use \"disklabel -r\" to install initial label\n");
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break;
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case EINVAL:
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fprintf(stderr, "Label magic number or checksum is wrong!\n");
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fprintf(stderr, "(disklabel or kernel is out of date?)\n");
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break;
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case EBUSY:
|
|
fprintf(stderr, "Open partition would move or shrink\n");
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break;
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|
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case EXDEV:
|
|
fprintf(stderr,
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"Labeled partition or 'a' partition must start at beginning of disk\n");
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break;
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default:
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errno = saverrno;
|
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perror((char *)NULL);
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break;
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}
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}
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|
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/*
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* Fetch disklabel for disk.
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* Use ioctl to get label unless -r flag is given.
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*/
|
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struct disklabel *
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readlabel(f)
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int f;
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{
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register struct disklabel *lp;
|
|
|
|
if (rflag) {
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if (read(f, bootarea, BBSIZE) < BBSIZE)
|
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Perror(specname);
|
|
for (lp = (struct disklabel *)bootarea;
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lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp));
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lp = (struct disklabel *)((char *)lp + 16))
|
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if (lp->d_magic == DISKMAGIC &&
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lp->d_magic2 == DISKMAGIC)
|
|
break;
|
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if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) ||
|
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lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC ||
|
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dkcksum(lp) != 0) {
|
|
fprintf(stderr,
|
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"Bad pack magic number (label is damaged, or pack is unlabeled)\n");
|
|
/* lp = (struct disklabel *)(bootarea + LABELOFFSET); */
|
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exit (1);
|
|
}
|
|
} else {
|
|
lp = &lab;
|
|
if (ioctl(f, DIOCGDINFO, lp) < 0)
|
|
Perror("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.
|
|
*/
|
|
struct disklabel *
|
|
makebootarea(boot, dp, f)
|
|
char *boot;
|
|
register struct disklabel *dp;
|
|
int f;
|
|
{
|
|
struct disklabel *lp;
|
|
register char *p;
|
|
int b;
|
|
#if NUMBOOT > 0
|
|
char *dkbasename;
|
|
struct stat sb;
|
|
#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);
|
|
bzero((char *)lp, sizeof *lp);
|
|
#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) {
|
|
if (read(f, boot, BBSIZE) < BBSIZE)
|
|
Perror(specname);
|
|
bzero((char *)lp, 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 = rindex(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)
|
|
fprintf(stderr, "bootstraps: xxboot = %s, bootxx = %s\n",
|
|
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)
|
|
Perror(xxboot);
|
|
#if NUMBOOT > 1
|
|
if (read(b, boot, (int)dp->d_secsize) < 0)
|
|
Perror(xxboot);
|
|
(void)close(b);
|
|
b = open(bootxx, O_RDONLY);
|
|
if (b < 0)
|
|
Perror(bootxx);
|
|
if (read(b, &boot[dp->d_secsize], (int)(dp->d_bbsize-dp->d_secsize)) < 0)
|
|
Perror(bootxx);
|
|
#else
|
|
if (read(b, boot, (int)dp->d_bbsize) < 0)
|
|
Perror(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)
|
|
Perror(xxboot);
|
|
if (read(b, bootbuf, bootsize) < 0) {
|
|
free(bootbuf);
|
|
Perror(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) {
|
|
fprintf(stderr,
|
|
"Bootstrap doesn't leave room for disk label\n");
|
|
exit(2);
|
|
}
|
|
return (lp);
|
|
}
|
|
|
|
display(f, lp)
|
|
FILE *f;
|
|
register struct disklabel *lp;
|
|
{
|
|
register int i, j;
|
|
register struct partition *pp;
|
|
|
|
fprintf(f, "# %s:\n", specname);
|
|
if ((unsigned) lp->d_type < DKMAXTYPES)
|
|
fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
|
|
else
|
|
fprintf(f, "type: %d\n", lp->d_type);
|
|
fprintf(f, "disk: %.*s\n", sizeof(lp->d_typename), lp->d_typename);
|
|
fprintf(f, "label: %.*s\n", sizeof(lp->d_packname), lp->d_packname);
|
|
fprintf(f, "flags:");
|
|
if (lp->d_flags & D_REMOVABLE)
|
|
fprintf(f, " removeable");
|
|
if (lp->d_flags & D_ECC)
|
|
fprintf(f, " ecc");
|
|
if (lp->d_flags & D_BADSECT)
|
|
fprintf(f, " badsect");
|
|
fprintf(f, "\n");
|
|
fprintf(f, "bytes/sector: %d\n", lp->d_secsize);
|
|
fprintf(f, "sectors/track: %d\n", lp->d_nsectors);
|
|
fprintf(f, "tracks/cylinder: %d\n", lp->d_ntracks);
|
|
fprintf(f, "sectors/cylinder: %d\n", lp->d_secpercyl);
|
|
fprintf(f, "cylinders: %d\n", lp->d_ncylinders);
|
|
fprintf(f, "rpm: %d\n", lp->d_rpm);
|
|
fprintf(f, "interleave: %d\n", lp->d_interleave);
|
|
fprintf(f, "trackskew: %d\n", lp->d_trackskew);
|
|
fprintf(f, "cylinderskew: %d\n", lp->d_cylskew);
|
|
fprintf(f, "headswitch: %d\t\t# milliseconds\n", lp->d_headswitch);
|
|
fprintf(f, "track-to-track seek: %d\t# milliseconds\n", lp->d_trkseek);
|
|
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++)
|
|
fprintf(f, "%d ", lp->d_drivedata[j]);
|
|
fprintf(f, "\n\n%d partitions:\n", lp->d_npartitions);
|
|
fprintf(f,
|
|
"# size offset fstype [fsize bsize bps/cpg]\n");
|
|
pp = lp->d_partitions;
|
|
for (i = 0; i < lp->d_npartitions; i++, pp++) {
|
|
if (pp->p_size) {
|
|
fprintf(f, " %c: %8d %8d ", 'a' + i,
|
|
pp->p_size, pp->p_offset);
|
|
if ((unsigned) pp->p_fstype < FSMAXTYPES)
|
|
fprintf(f, "%8.8s", fstypenames[pp->p_fstype]);
|
|
else
|
|
fprintf(f, "%8d", pp->p_fstype);
|
|
switch (pp->p_fstype) {
|
|
|
|
case FS_UNUSED: /* XXX */
|
|
fprintf(f, " %5d %5d %5.5s ",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag, "");
|
|
break;
|
|
|
|
case FS_BSDFFS:
|
|
fprintf(f, " %5d %5d %5d ",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag,
|
|
pp->p_cpg);
|
|
break;
|
|
|
|
case FS_BSDLFS:
|
|
fprintf(f, " %5d %5d %5d",
|
|
pp->p_fsize, pp->p_fsize * pp->p_frag,
|
|
pp->p_cpg);
|
|
break;
|
|
|
|
default:
|
|
fprintf(f, "%20.20s", "");
|
|
break;
|
|
}
|
|
fprintf(f, "\t# (Cyl. %4d",
|
|
pp->p_offset / lp->d_secpercyl);
|
|
if (pp->p_offset % lp->d_secpercyl)
|
|
putc('*', f);
|
|
else
|
|
putc(' ', f);
|
|
fprintf(f, "- %d",
|
|
(pp->p_offset +
|
|
pp->p_size + lp->d_secpercyl - 1) /
|
|
lp->d_secpercyl - 1);
|
|
if (pp->p_size % lp->d_secpercyl)
|
|
putc('*', f);
|
|
fprintf(f, ")\n");
|
|
}
|
|
}
|
|
fflush(f);
|
|
}
|
|
|
|
edit(lp, f)
|
|
struct disklabel *lp;
|
|
int f;
|
|
{
|
|
register int c;
|
|
struct disklabel label;
|
|
FILE *fd;
|
|
char *mktemp();
|
|
|
|
(void) mktemp(tmpfil);
|
|
fd = fopen(tmpfil, "w");
|
|
if (fd == NULL) {
|
|
fprintf(stderr, "%s: Can't create\n", tmpfil);
|
|
return (1);
|
|
}
|
|
(void)fchmod(fileno(fd), 0600);
|
|
display(fd, lp);
|
|
fclose(fd);
|
|
for (;;) {
|
|
if (!editit())
|
|
break;
|
|
fd = fopen(tmpfil, "r");
|
|
if (fd == NULL) {
|
|
fprintf(stderr, "%s: Can't reopen for reading\n",
|
|
tmpfil);
|
|
break;
|
|
}
|
|
bzero((char *)&label, sizeof(label));
|
|
if (getasciilabel(fd, &label)) {
|
|
*lp = label;
|
|
if (writelabel(f, bootarea, lp) == 0) {
|
|
(void) unlink(tmpfil);
|
|
return (0);
|
|
}
|
|
}
|
|
printf("re-edit the label? [y]: "); fflush(stdout);
|
|
c = getchar();
|
|
if (c != EOF && c != (int)'\n')
|
|
while (getchar() != (int)'\n')
|
|
;
|
|
if (c == (int)'n')
|
|
break;
|
|
}
|
|
(void) unlink(tmpfil);
|
|
return (1);
|
|
}
|
|
|
|
editit()
|
|
{
|
|
register int pid, xpid;
|
|
int stat, omask;
|
|
extern char *getenv();
|
|
|
|
omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
|
|
while ((pid = fork()) < 0) {
|
|
extern int errno;
|
|
|
|
if (errno == EPROCLIM) {
|
|
fprintf(stderr, "You have too many processes\n");
|
|
return(0);
|
|
}
|
|
if (errno != EAGAIN) {
|
|
perror("fork");
|
|
return(0);
|
|
}
|
|
sleep(1);
|
|
}
|
|
if (pid == 0) {
|
|
register char *ed;
|
|
|
|
sigsetmask(omask);
|
|
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;
|
|
sigsetmask(omask);
|
|
return(!stat);
|
|
}
|
|
|
|
char *
|
|
skip(cp)
|
|
register char *cp;
|
|
{
|
|
|
|
while (*cp != '\0' && isspace(*cp))
|
|
cp++;
|
|
if (*cp == '\0' || *cp == '#')
|
|
return ((char *)NULL);
|
|
return (cp);
|
|
}
|
|
|
|
char *
|
|
word(cp)
|
|
register char *cp;
|
|
{
|
|
register char c;
|
|
|
|
while (*cp != '\0' && !isspace(*cp) && *cp != '#')
|
|
cp++;
|
|
if ((c = *cp) != '\0') {
|
|
*cp++ = '\0';
|
|
if (c != '#')
|
|
return (skip(cp));
|
|
}
|
|
return ((char *)NULL);
|
|
}
|
|
|
|
/*
|
|
* Read an ascii label in from fd f,
|
|
* in the same format as that put out by display(),
|
|
* and fill in lp.
|
|
*/
|
|
getasciilabel(f, lp)
|
|
FILE *f;
|
|
register struct disklabel *lp;
|
|
{
|
|
register char **cpp, *cp;
|
|
register struct partition *pp;
|
|
char *tp, *s, 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 = index(line,'\n'))
|
|
*cp = '\0';
|
|
cp = skip(line);
|
|
if (cp == NULL)
|
|
continue;
|
|
tp = index(cp, ':');
|
|
if (tp == NULL) {
|
|
fprintf(stderr, "line %d: syntax error\n", lineno);
|
|
errors++;
|
|
continue;
|
|
}
|
|
*tp++ = '\0', tp = skip(tp);
|
|
if (streq(cp, "type")) {
|
|
if (tp == NULL)
|
|
tp = "unknown";
|
|
cpp = dktypenames;
|
|
for (; cpp < &dktypenames[DKMAXTYPES]; cpp++)
|
|
if ((s = *cpp) && streq(s, tp)) {
|
|
lp->d_type = cpp - dktypenames;
|
|
goto next;
|
|
}
|
|
v = atoi(tp);
|
|
if ((unsigned)v >= DKMAXTYPES)
|
|
fprintf(stderr, "line %d:%s %d\n", lineno,
|
|
"Warning, unknown disk type", v);
|
|
lp->d_type = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "flags")) {
|
|
for (v = 0; (cp = tp) && *cp != '\0';) {
|
|
tp = word(cp);
|
|
if (streq(cp, "removeable"))
|
|
v |= D_REMOVABLE;
|
|
else if (streq(cp, "ecc"))
|
|
v |= D_ECC;
|
|
else if (streq(cp, "badsect"))
|
|
v |= D_BADSECT;
|
|
else {
|
|
fprintf(stderr,
|
|
"line %d: %s: bad flag\n",
|
|
lineno, cp);
|
|
errors++;
|
|
}
|
|
}
|
|
lp->d_flags = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "drivedata")) {
|
|
register 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) {
|
|
fprintf(stderr,
|
|
"line %d: bad # of partitions\n", lineno);
|
|
lp->d_npartitions = MAXPARTITIONS;
|
|
errors++;
|
|
} else
|
|
lp->d_npartitions = v;
|
|
continue;
|
|
}
|
|
if (tp == NULL)
|
|
tp = "";
|
|
if (streq(cp, "disk")) {
|
|
strncpy(lp->d_typename, tp, sizeof (lp->d_typename));
|
|
continue;
|
|
}
|
|
if (streq(cp, "label")) {
|
|
strncpy(lp->d_packname, tp, sizeof (lp->d_packname));
|
|
continue;
|
|
}
|
|
if (streq(cp, "bytes/sector")) {
|
|
v = atoi(tp);
|
|
if (v <= 0 || (v % 512) != 0) {
|
|
fprintf(stderr,
|
|
"line %d: %s: bad sector size\n",
|
|
lineno, tp);
|
|
errors++;
|
|
} else
|
|
lp->d_secsize = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "sectors/track")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_nsectors = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "sectors/cylinder")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_secpercyl = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "tracks/cylinder")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_ntracks = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "cylinders")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_ncylinders = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "rpm")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_rpm = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "interleave")) {
|
|
v = atoi(tp);
|
|
if (v <= 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_interleave = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "trackskew")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_trackskew = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "cylinderskew")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_cylskew = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "headswitch")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_headswitch = v;
|
|
continue;
|
|
}
|
|
if (streq(cp, "track-to-track seek")) {
|
|
v = atoi(tp);
|
|
if (v < 0) {
|
|
fprintf(stderr, "line %d: %s: bad %s\n",
|
|
lineno, tp, cp);
|
|
errors++;
|
|
} else
|
|
lp->d_trkseek = v;
|
|
continue;
|
|
}
|
|
if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') {
|
|
unsigned part = *cp - 'a';
|
|
|
|
if (part > lp->d_npartitions) {
|
|
fprintf(stderr,
|
|
"line %d: bad partition name\n", lineno);
|
|
errors++;
|
|
continue;
|
|
}
|
|
pp = &lp->d_partitions[part];
|
|
#define NXTNUM(n) { \
|
|
if (tp == NULL) { \
|
|
fprintf(stderr, "line %d: too few numeric fields\n", lineno); \
|
|
errors++; \
|
|
break; \
|
|
} else { \
|
|
cp = tp, tp = word(cp); \
|
|
if (tp == NULL) \
|
|
tp = cp; \
|
|
(n) = atoi(cp); \
|
|
} \
|
|
}
|
|
|
|
NXTNUM(v);
|
|
if (v < 0) {
|
|
fprintf(stderr,
|
|
"line %d: %s: bad partition size\n",
|
|
lineno, cp);
|
|
errors++;
|
|
} else
|
|
pp->p_size = v;
|
|
NXTNUM(v);
|
|
if (v < 0) {
|
|
fprintf(stderr,
|
|
"line %d: %s: bad partition offset\n",
|
|
lineno, cp);
|
|
errors++;
|
|
} else
|
|
pp->p_offset = v;
|
|
cp = tp, tp = word(cp);
|
|
cpp = fstypenames;
|
|
for (; cpp < &fstypenames[FSMAXTYPES]; cpp++)
|
|
if ((s = *cpp) && streq(s, cp)) {
|
|
pp->p_fstype = cpp - fstypenames;
|
|
goto gottype;
|
|
}
|
|
if (isdigit(*cp))
|
|
v = atoi(cp);
|
|
else
|
|
v = FSMAXTYPES;
|
|
if ((unsigned)v >= FSMAXTYPES) {
|
|
fprintf(stderr, "line %d: %s %s\n", lineno,
|
|
"Warning, unknown filesystem type", 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:
|
|
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:
|
|
NXTNUM(pp->p_fsize);
|
|
if (pp->p_fsize == 0)
|
|
break;
|
|
NXTNUM(v);
|
|
pp->p_frag = v / pp->p_fsize;
|
|
NXTNUM(pp->p_cpg);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
fprintf(stderr, "line %d: %s: Unknown disklabel field\n",
|
|
lineno, cp);
|
|
errors++;
|
|
next:
|
|
;
|
|
}
|
|
errors += checklabel(lp);
|
|
return (errors == 0);
|
|
}
|
|
|
|
/*
|
|
* Check disklabel for errors and fill in
|
|
* derived fields according to supplied values.
|
|
*/
|
|
checklabel(lp)
|
|
register struct disklabel *lp;
|
|
{
|
|
register struct partition *pp;
|
|
int i, errors = 0;
|
|
char part;
|
|
|
|
if (lp->d_secsize == 0) {
|
|
fprintf(stderr, "sector size %d\n", lp->d_secsize);
|
|
return (1);
|
|
}
|
|
if (lp->d_nsectors == 0) {
|
|
fprintf(stderr, "sectors/track %d\n", lp->d_nsectors);
|
|
return (1);
|
|
}
|
|
if (lp->d_ntracks == 0) {
|
|
fprintf(stderr, "tracks/cylinder %d\n", lp->d_ntracks);
|
|
return (1);
|
|
}
|
|
if (lp->d_ncylinders == 0) {
|
|
fprintf(stderr, "cylinders/unit %d\n", lp->d_ncylinders);
|
|
errors++;
|
|
}
|
|
if (lp->d_rpm == 0)
|
|
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;
|
|
if (lp->d_bbsize == 0) {
|
|
fprintf(stderr, "boot block size %d\n", lp->d_bbsize);
|
|
errors++;
|
|
} else if (lp->d_bbsize % lp->d_secsize)
|
|
Warning("boot block size %% sector-size != 0");
|
|
if (lp->d_sbsize == 0) {
|
|
fprintf(stderr, "super block size %d\n", lp->d_sbsize);
|
|
errors++;
|
|
} else if (lp->d_sbsize % lp->d_secsize)
|
|
Warning("super block size %% sector-size != 0");
|
|
if (lp->d_npartitions > MAXPARTITIONS)
|
|
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)
|
|
Warning("partition %c: size 0, but offset %d",
|
|
part, pp->p_offset);
|
|
#ifdef notdef
|
|
if (pp->p_size % lp->d_secpercyl)
|
|
Warning("partition %c: size %% cylinder-size != 0",
|
|
part);
|
|
if (pp->p_offset % lp->d_secpercyl)
|
|
Warning("partition %c: offset %% cylinder-size != 0",
|
|
part);
|
|
#endif
|
|
if (pp->p_offset > lp->d_secperunit) {
|
|
fprintf(stderr,
|
|
"partition %c: offset past end of unit\n", part);
|
|
errors++;
|
|
}
|
|
if (pp->p_offset + pp->p_size > lp->d_secperunit) {
|
|
fprintf(stderr,
|
|
"partition %c: partition extends past end of unit\n",
|
|
part);
|
|
errors++;
|
|
}
|
|
}
|
|
for (; i < MAXPARTITIONS; i++) {
|
|
part = 'a' + i;
|
|
pp = &lp->d_partitions[i];
|
|
if (pp->p_size || pp->p_offset)
|
|
Warning("unused partition %c: size %d offset %d",
|
|
'a' + i, pp->p_size, pp->p_offset);
|
|
}
|
|
return (errors);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
setbootflag(lp)
|
|
register struct disklabel *lp;
|
|
{
|
|
register 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) {
|
|
fprintf(stderr,
|
|
"boot overlaps used partition %c\n",
|
|
part);
|
|
errors++;
|
|
} else {
|
|
pp->p_fstype = FS_BOOT;
|
|
Warning("boot overlaps partition %c, %s",
|
|
part, "marked as FS_BOOT");
|
|
}
|
|
}
|
|
}
|
|
if (errors) {
|
|
fprintf(stderr, "Cannot install boot program\n");
|
|
exit(4);
|
|
}
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
Warning(fmt, a1, a2, a3, a4, a5)
|
|
char *fmt;
|
|
{
|
|
|
|
fprintf(stderr, "Warning, ");
|
|
fprintf(stderr, fmt, a1, a2, a3, a4, a5);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
Perror(str)
|
|
char *str;
|
|
{
|
|
fputs("disklabel: ", stderr); perror(str);
|
|
exit(4);
|
|
}
|
|
|
|
usage()
|
|
{
|
|
#if NUMBOOT > 0
|
|
fprintf(stderr,
|
|
"%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n%s\n\t%s\n",
|
|
"usage: disklabel [-r] disk",
|
|
"(to read label)",
|
|
"or disklabel -w [-r] disk type [ packid ]",
|
|
"(to write label with existing boot program)",
|
|
"or disklabel -e [-r] disk",
|
|
"(to edit label)",
|
|
"or disklabel -R [-r] disk protofile",
|
|
"(to restore label with existing boot program)",
|
|
#if NUMBOOT > 1
|
|
"or disklabel -B [ -b boot1 [ -s boot2 ] ] disk [ type ]",
|
|
"(to install boot program with existing label)",
|
|
"or disklabel -w -B [ -b boot1 [ -s boot2 ] ] disk type [ packid ]",
|
|
"(to write label and boot program)",
|
|
"or disklabel -R -B [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]",
|
|
"(to restore label and boot program)",
|
|
#else
|
|
"or disklabel -B [ -b bootprog ] disk [ type ]",
|
|
"(to install boot program with existing on-disk label)",
|
|
"or disklabel -w -B [ -b bootprog ] disk type [ packid ]",
|
|
"(to write label and install boot program)",
|
|
"or disklabel -R -B [ -b bootprog ] disk protofile [ type ]",
|
|
"(to restore label and install boot program)",
|
|
#endif
|
|
"or disklabel [-NW] disk",
|
|
"(to write disable/enable label)");
|
|
#else
|
|
fprintf(stderr, "%-43s%s\n%-43s%s\n%-43s%s\n%-43s%s\n%-43s%s\n",
|
|
"usage: disklabel [-r] disk", "(to read label)",
|
|
"or disklabel -w [-r] disk type [ packid ]", "(to write label)",
|
|
"or disklabel -e [-r] disk", "(to edit label)",
|
|
"or disklabel -R [-r] disk protofile", "(to restore label)",
|
|
"or disklabel [-NW] disk", "(to write disable/enable label)");
|
|
#endif
|
|
exit(1);
|
|
}
|