2023-05-14 14:20:04 +02:00
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/* $OpenBSD: disklabel.c,v 1.249 2023/05/13 18:13:42 krw Exp $ */
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2023-04-30 03:15:27 +02:00
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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. 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/param.h> /* DEV_BSIZE */
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#include <sys/sysctl.h>
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#include <sys/ioctl.h>
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#include <sys/dkio.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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#include <sys/disklabel.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 <fcntl.h>
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#include <limits.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 <fstab.h>
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#include "pathnames.h"
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#include "extern.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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char *dkname, *specname, *fstabfile;
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char tmpfil[] = _PATH_TMPFILE;
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char *mountpoints[MAXPARTITIONS];
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struct disklabel lab;
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enum {
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UNSPEC, EDIT, EDITOR, READ, RESTORE, WRITE
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} op = UNSPEC;
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int aflag;
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int cflag;
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int dflag;
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int tflag;
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int uidflag;
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int verbose;
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int quiet;
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int donothing;
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void makedisktab(FILE *, struct disklabel *);
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int checklabel(struct disklabel *);
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void readlabel(int);
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void parsefstab(void);
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void parsedisktab(char *, struct disklabel *);
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int edit(struct disklabel *, int);
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int editit(const char *);
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char *skip(char *);
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char *word(char *);
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int getasciilabel(FILE *, struct disklabel *);
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int cmplabel(struct disklabel *, struct disklabel *);
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void usage(void);
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u_int64_t getnum(char *, u_int64_t, u_int64_t, const char **);
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int64_t physmem;
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void
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getphysmem(void)
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{
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size_t sz = sizeof(physmem);
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int mib[] = { CTL_HW, HW_PHYSMEM64 };
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if (sysctl(mib, 2, &physmem, &sz, NULL, (size_t)0) == -1)
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errx(4, "can't get mem size");
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}
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int
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main(int argc, char *argv[])
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{
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FILE *t;
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char *autotable = NULL;
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int ch, f, error = 0;
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char print_unit = '\0';
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getphysmem();
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while ((ch = getopt(argc, argv, "AEf:F:hRcdenp:tT:vw")) != -1)
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switch (ch) {
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case 'A':
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aflag = 1;
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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 'c':
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cflag = 1;
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break;
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case 'd':
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dflag = 1;
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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 'E':
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if (op != UNSPEC)
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usage();
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op = EDITOR;
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break;
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case 'f':
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fstabfile = optarg;
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uidflag = 0;
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break;
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case 'F':
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fstabfile = optarg;
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uidflag = 1;
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break;
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case 'h':
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print_unit = '*';
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break;
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case 't':
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tflag = 1;
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break;
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case 'T':
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autotable = optarg;
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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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case 'p':
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if (strchr("bckmgtBCKMGT", optarg[0]) == NULL ||
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optarg[1] != '\0') {
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fprintf(stderr, "Valid units are bckmgt\n");
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return 1;
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}
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print_unit = tolower((unsigned char)optarg[0]);
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break;
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case 'n':
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donothing = 1;
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break;
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case 'v':
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verbose = 1;
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break;
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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 (op == UNSPEC)
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op = READ;
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if (argc < 1 || (fstabfile && !(op == EDITOR || op == RESTORE ||
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aflag)))
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usage();
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if (argv[0] == NULL)
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usage();
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dkname = argv[0];
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f = opendev(dkname, (op == READ ? O_RDONLY : O_RDWR), OPENDEV_PART,
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&specname);
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if (f == -1)
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err(4, "%s", specname);
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if (op != WRITE || aflag || dflag) {
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readlabel(f);
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if (op == EDIT || op == EDITOR || aflag) {
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if (pledge("stdio rpath wpath cpath disklabel proc "
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"exec", NULL) == -1)
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err(1, "pledge");
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} else if (fstabfile) {
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if (pledge("stdio rpath wpath cpath disklabel", NULL)
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== -1)
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err(1, "pledge");
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} else {
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if (pledge("stdio rpath wpath disklabel", NULL) == -1)
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err(1, "pledge");
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}
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if (autotable != NULL)
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parse_autotable(autotable);
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parsefstab();
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error = aflag ? editor_allocspace(&lab) : 0;
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if (op == WRITE && error)
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errx(1, "autoalloc failed");
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} else if (argc == 2 || argc == 3) {
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/* Ensure f is a disk device before pledging. */
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if (ioctl(f, DIOCGDINFO, &lab) == -1)
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err(4, "DIOCGDINFO");
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if (pledge("stdio rpath wpath disklabel", NULL) == -1)
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err(1, "pledge");
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parsedisktab(argv[1], &lab);
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if (argc == 3)
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strncpy(lab.d_packname, argv[2], sizeof(lab.d_packname));
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} else
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usage();
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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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error = edit(&lab, f);
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break;
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case EDITOR:
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if (argc != 1)
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usage();
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error = editor(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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if (pledge("stdio", NULL) == -1)
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err(1, "pledge");
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if (tflag)
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makedisktab(stdout, &lab);
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else
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display(stdout, &lab, print_unit, 1);
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error = checklabel(&lab);
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break;
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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 (!(t = fopen(argv[1], "r")))
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err(4, "%s", argv[1]);
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error = getasciilabel(t, &lab);
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if (error == 0) {
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memset(&lab.d_uid, 0, sizeof(lab.d_uid));
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error = writelabel(f, &lab);
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}
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fclose(t);
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break;
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case WRITE:
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error = checklabel(&lab);
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if (error == 0)
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error = writelabel(f, &lab);
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break;
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default:
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break;
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}
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return error;
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}
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/*
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* Construct a prototype disklabel from /etc/disktab.
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*/
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void
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parsedisktab(char *type, struct disklabel *lp)
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{
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struct disklabel *dp;
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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;
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}
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int
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writelabel(int f, struct disklabel *lp)
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{
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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 (!donothing) {
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/* Write new label to disk. */
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if (ioctl(f, DIOCWDINFO, lp) == -1) {
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warn("DIOCWDINFO");
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return (1);
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}
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/* Refresh our copy of the on-disk current label to get UID. */
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if (ioctl(f, DIOCGDINFO, &lab) == -1)
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err(4, "DIOCGDINFO");
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/* Finally, write out any mount point information. */
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mpsave(lp);
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}
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return (0);
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}
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/*
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* Fetch requested disklabel into 'lab' using ioctl.
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*/
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void
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readlabel(int f)
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{
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struct disklabel dl;
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if (cflag && ioctl(f, DIOCRLDINFO) == -1)
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err(4, "DIOCRLDINFO");
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if ((op == RESTORE) || dflag || aflag) {
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if (ioctl(f, DIOCGPDINFO, &lab) == -1)
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err(4, "DIOCGPDINFO");
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} else {
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if (ioctl(f, DIOCGDINFO, &lab) == -1)
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err(4, "DIOCGDINFO");
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if (ioctl(f, DIOCGPDINFO, &dl) == -1)
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err(4, "DIOCGPDINFO");
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lab.d_secsize = dl.d_secsize;
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lab.d_nsectors = dl.d_nsectors;
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lab.d_ntracks = dl.d_ntracks;
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lab.d_secpercyl = dl.d_secpercyl;
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lab.d_ncylinders = dl.d_ncylinders;
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2023-05-14 14:20:04 +02:00
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lab.d_type = dl.d_type;
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2023-04-30 03:15:27 +02:00
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}
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}
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void
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parsefstab(void)
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{
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char *partname, *partduid;
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struct fstab *fsent;
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int i;
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i = asprintf(&partname, "/dev/%s%c", dkname, 'a');
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if (i == -1)
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err(4, NULL);
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i = asprintf(&partduid,
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"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.a",
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lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3],
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lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7]);
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if (i == -1)
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err(4, NULL);
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setfsent();
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for (i = 0; i < MAXPARTITIONS; i++) {
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partname[strlen(dkname) + 5] = 'a' + i;
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partduid[strlen(partduid) - 1] = 'a' + i;
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fsent = getfsspec(partname);
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if (fsent == NULL)
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fsent = getfsspec(partduid);
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|
|
if (fsent)
|
|
|
|
mountpoints[i] = strdup(fsent->fs_file);
|
|
|
|
}
|
|
|
|
endfsent();
|
|
|
|
free(partduid);
|
|
|
|
free(partname);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
makedisktab(FILE *f, struct disklabel *lp)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct partition *pp;
|
|
|
|
|
|
|
|
if (lp->d_packname[0])
|
|
|
|
(void)fprintf(f, "%.*s|", (int)sizeof(lp->d_packname),
|
|
|
|
lp->d_packname);
|
|
|
|
if (lp->d_typename[0])
|
|
|
|
(void)fprintf(f, "%.*s|", (int)sizeof(lp->d_typename),
|
|
|
|
lp->d_typename);
|
|
|
|
(void)fputs("Automatically generated label:\\\n\t:dt=", f);
|
|
|
|
if (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#%u:", lp->d_secsize);
|
|
|
|
(void)fprintf(f, "ns#%u:", lp->d_nsectors);
|
|
|
|
(void)fprintf(f, "nt#%u:", lp->d_ntracks);
|
|
|
|
(void)fprintf(f, "nc#%u:", lp->d_ncylinders);
|
|
|
|
(void)fprintf(f, "sc#%u:", lp->d_secpercyl);
|
|
|
|
(void)fprintf(f, "su#%llu:", DL_GETDSIZE(lp));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX We do not print have disktab information yet for
|
|
|
|
* XXX DL_GETBSTART DL_GETBEND
|
|
|
|
*/
|
|
|
|
pp = lp->d_partitions;
|
|
|
|
for (i = 0; i < lp->d_npartitions; i++, pp++) {
|
|
|
|
if (DL_GETPSIZE(pp)) {
|
|
|
|
char c = 'a' + i;
|
|
|
|
|
|
|
|
(void)fprintf(f, "\\\n\t:");
|
|
|
|
(void)fprintf(f, "p%c#%llu:", c, DL_GETPSIZE(pp));
|
|
|
|
(void)fprintf(f, "o%c#%llu:", c, DL_GETPOFFSET(pp));
|
|
|
|
if (pp->p_fstype != FS_UNUSED) {
|
|
|
|
if (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:
|
|
|
|
(void)fprintf(f, "b%c#%u:", c,
|
|
|
|
DISKLABELV1_FFS_BSIZE(pp->p_fragblock));
|
|
|
|
(void)fprintf(f, "f%c#%u:", c,
|
|
|
|
DISKLABELV1_FFS_FSIZE(pp->p_fragblock));
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
(void)fputc('\n', f);
|
|
|
|
(void)fflush(f);
|
|
|
|
}
|
|
|
|
|
|
|
|
double
|
|
|
|
scale(u_int64_t sz, char unit, const struct disklabel *lp)
|
|
|
|
{
|
|
|
|
double fsz;
|
|
|
|
|
|
|
|
fsz = (double)sz * lp->d_secsize;
|
|
|
|
|
|
|
|
switch (unit) {
|
|
|
|
case 'B':
|
|
|
|
return fsz;
|
|
|
|
case 'C':
|
|
|
|
return fsz / lp->d_secsize / lp->d_secpercyl;
|
|
|
|
case 'K':
|
|
|
|
return fsz / 1024;
|
|
|
|
case 'M':
|
|
|
|
return fsz / (1024 * 1024);
|
|
|
|
case 'G':
|
|
|
|
return fsz / (1024 * 1024 * 1024);
|
|
|
|
case 'T':
|
|
|
|
return fsz / (1024ULL * 1024 * 1024 * 1024);
|
|
|
|
default:
|
|
|
|
return -1.0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Display a particular partition.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
display_partition(FILE *f, const struct disklabel *lp, int i, char unit)
|
|
|
|
{
|
|
|
|
const struct partition *pp = &lp->d_partitions[i];
|
|
|
|
double p_size;
|
|
|
|
|
|
|
|
p_size = scale(DL_GETPSIZE(pp), unit, lp);
|
|
|
|
if (DL_GETPSIZE(pp)) {
|
|
|
|
u_int32_t frag = DISKLABELV1_FFS_FRAG(pp->p_fragblock);
|
|
|
|
u_int32_t fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock);
|
|
|
|
|
|
|
|
if (p_size < 0)
|
|
|
|
fprintf(f, " %c: %16llu %16llu ", 'a' + i,
|
|
|
|
DL_GETPSIZE(pp), DL_GETPOFFSET(pp));
|
|
|
|
else
|
|
|
|
fprintf(f, " %c: %15.*f%c %16llu ", 'a' + i,
|
|
|
|
unit == 'B' ? 0 : 1, p_size, unit,
|
|
|
|
DL_GETPOFFSET(pp));
|
|
|
|
if (pp->p_fstype < FSMAXTYPES)
|
|
|
|
fprintf(f, "%7.7s", fstypenames[pp->p_fstype]);
|
|
|
|
else
|
|
|
|
fprintf(f, "%7d", pp->p_fstype);
|
|
|
|
|
|
|
|
switch (pp->p_fstype) {
|
|
|
|
case FS_BSDFFS:
|
|
|
|
fprintf(f, " %5u %5u %5hu ",
|
|
|
|
fsize, fsize * frag,
|
|
|
|
pp->p_cpg);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fprintf(f, "%20.20s", "");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mountpoints[i] != NULL)
|
|
|
|
fprintf(f, "# %s", mountpoints[i]);
|
|
|
|
putc('\n', f);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
char
|
|
|
|
canonical_unit(const struct disklabel *lp, char unit)
|
|
|
|
{
|
|
|
|
const struct partition *pp;
|
|
|
|
u_int64_t small;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (unit == '*') {
|
|
|
|
small = DL_GETDSIZE(lp);
|
|
|
|
pp = &lp->d_partitions[0];
|
|
|
|
for (i = 0; i < lp->d_npartitions; i++, pp++)
|
|
|
|
if (DL_GETPSIZE(pp) > 0 && DL_GETPSIZE(pp) < small)
|
|
|
|
small = DL_GETPSIZE(pp);
|
|
|
|
if (small < DL_BLKTOSEC(lp, MEG(1)))
|
|
|
|
unit = 'K';
|
|
|
|
else if (small < DL_BLKTOSEC(lp, MEG(1024)))
|
|
|
|
unit = 'M';
|
|
|
|
else if (small < DL_BLKTOSEC(lp, GIG(1024)))
|
|
|
|
unit = 'G';
|
|
|
|
else
|
|
|
|
unit = 'T';
|
|
|
|
}
|
|
|
|
unit = toupper((unsigned char)unit);
|
|
|
|
|
|
|
|
return (unit);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
display(FILE *f, const struct disklabel *lp, char unit, int all)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
double d;
|
|
|
|
|
|
|
|
unit = canonical_unit(lp, unit);
|
|
|
|
|
|
|
|
fprintf(f, "# %s:\n", specname);
|
|
|
|
|
|
|
|
if (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", (int)sizeof(lp->d_typename),
|
|
|
|
lp->d_typename);
|
|
|
|
fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname),
|
|
|
|
lp->d_packname);
|
|
|
|
fprintf(f, "duid: %02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx\n",
|
|
|
|
lp->d_uid[0], lp->d_uid[1], lp->d_uid[2], lp->d_uid[3],
|
|
|
|
lp->d_uid[4], lp->d_uid[5], lp->d_uid[6], lp->d_uid[7]);
|
|
|
|
fprintf(f, "flags:");
|
|
|
|
if (lp->d_flags & D_VENDOR)
|
|
|
|
fprintf(f, " vendor");
|
|
|
|
putc('\n', f);
|
|
|
|
|
|
|
|
fprintf(f, "bytes/sector: %u\n", lp->d_secsize);
|
|
|
|
fprintf(f, "sectors/track: %u\n", lp->d_nsectors);
|
|
|
|
fprintf(f, "tracks/cylinder: %u\n", lp->d_ntracks);
|
|
|
|
fprintf(f, "sectors/cylinder: %u\n", lp->d_secpercyl);
|
|
|
|
fprintf(f, "cylinders: %u\n", lp->d_ncylinders);
|
|
|
|
fprintf(f, "total sectors: %llu", DL_GETDSIZE(lp));
|
|
|
|
d = scale(DL_GETDSIZE(lp), unit, lp);
|
|
|
|
if (d > 0)
|
|
|
|
fprintf(f, " # total bytes: %.*f%c", unit == 'B' ? 0 : 1,
|
|
|
|
d, unit);
|
|
|
|
fprintf(f, "\n");
|
|
|
|
|
|
|
|
fprintf(f, "boundstart: %llu\n", DL_GETBSTART(lp));
|
|
|
|
fprintf(f, "boundend: %llu\n", DL_GETBEND(lp));
|
|
|
|
if (all) {
|
|
|
|
fprintf(f, "\n%hu partitions:\n", lp->d_npartitions);
|
|
|
|
fprintf(f, "# %16.16s %16.16s fstype [fsize bsize cpg]\n",
|
|
|
|
"size", "offset");
|
|
|
|
for (i = 0; i < lp->d_npartitions; i++)
|
|
|
|
display_partition(f, lp, i, unit);
|
|
|
|
}
|
|
|
|
fflush(f);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
edit(struct disklabel *lp, int f)
|
|
|
|
{
|
|
|
|
int first, ch, fd, error = 0;
|
|
|
|
struct disklabel label;
|
|
|
|
FILE *fp;
|
|
|
|
|
|
|
|
if ((fd = mkstemp(tmpfil)) == -1 || (fp = fdopen(fd, "w")) == NULL) {
|
|
|
|
warn("%s", tmpfil);
|
|
|
|
if (fd != -1)
|
|
|
|
close(fd);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
display(fp, lp, 0, 1);
|
|
|
|
fprintf(fp, "\n# Notes:\n");
|
|
|
|
fprintf(fp,
|
|
|
|
"# Up to 16 partitions are valid, named from 'a' to 'p'. Partition 'a' is\n"
|
|
|
|
"# your root filesystem, 'b' is your swap, and 'c' should cover your whole\n"
|
|
|
|
"# disk. Any other partition is free for any use. 'size' and 'offset' are\n"
|
|
|
|
"# in 512-byte blocks. fstype should be '4.2BSD', 'swap', or 'none' or some\n"
|
|
|
|
"# other values. fsize/bsize/cpg should typically be '2048 16384 16' for a\n"
|
|
|
|
"# 4.2BSD filesystem (or '512 4096 16' except on alpha, sun4, ...)\n");
|
|
|
|
fclose(fp);
|
|
|
|
for (;;) {
|
|
|
|
if (editit(tmpfil) == -1)
|
|
|
|
break;
|
|
|
|
fp = fopen(tmpfil, "r");
|
|
|
|
if (fp == NULL) {
|
|
|
|
warn("%s", tmpfil);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* Start with the kernel's idea of the default label. */
|
|
|
|
if (ioctl(f, DIOCGPDINFO, &label) == -1)
|
|
|
|
err(4, "DIOCGPDINFO");
|
|
|
|
error = getasciilabel(fp, &label);
|
|
|
|
if (error == 0) {
|
|
|
|
if (cmplabel(lp, &label) == 0) {
|
|
|
|
puts("No changes.");
|
|
|
|
fclose(fp);
|
|
|
|
(void) unlink(tmpfil);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
*lp = label;
|
|
|
|
if (writelabel(f, lp) == 0) {
|
|
|
|
fclose(fp);
|
|
|
|
(void) unlink(tmpfil);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
printf("re-edit the label? [y]: ");
|
|
|
|
fflush(stdout);
|
|
|
|
first = ch = getchar();
|
|
|
|
while (ch != '\n' && ch != EOF)
|
|
|
|
ch = getchar();
|
|
|
|
if (first == 'n' || first == 'N')
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
(void)unlink(tmpfil);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Execute an editor on the specified pathname, which is interpreted
|
|
|
|
* from the shell. This means flags may be included.
|
|
|
|
*
|
|
|
|
* Returns -1 on error, or the exit value on success.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
editit(const char *pathname)
|
|
|
|
{
|
|
|
|
char *argp[] = {"sh", "-c", NULL, NULL}, *ed, *p;
|
|
|
|
sig_t sighup, sigint, sigquit, sigchld;
|
|
|
|
pid_t pid;
|
|
|
|
int saved_errno, st, ret = -1;
|
|
|
|
|
|
|
|
ed = getenv("VISUAL");
|
|
|
|
if (ed == NULL || ed[0] == '\0')
|
|
|
|
ed = getenv("EDITOR");
|
|
|
|
if (ed == NULL || ed[0] == '\0')
|
|
|
|
ed = _PATH_VI;
|
|
|
|
if (asprintf(&p, "%s %s", ed, pathname) == -1)
|
|
|
|
return (-1);
|
|
|
|
argp[2] = p;
|
|
|
|
|
|
|
|
sighup = signal(SIGHUP, SIG_IGN);
|
|
|
|
sigint = signal(SIGINT, SIG_IGN);
|
|
|
|
sigquit = signal(SIGQUIT, SIG_IGN);
|
|
|
|
sigchld = signal(SIGCHLD, SIG_DFL);
|
|
|
|
if ((pid = fork()) == -1)
|
|
|
|
goto fail;
|
|
|
|
if (pid == 0) {
|
|
|
|
execv(_PATH_BSHELL, argp);
|
|
|
|
_exit(127);
|
|
|
|
}
|
|
|
|
while (waitpid(pid, &st, 0) == -1)
|
|
|
|
if (errno != EINTR)
|
|
|
|
goto fail;
|
|
|
|
if (!WIFEXITED(st))
|
|
|
|
errno = EINTR;
|
|
|
|
else
|
|
|
|
ret = WEXITSTATUS(st);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
saved_errno = errno;
|
|
|
|
(void)signal(SIGHUP, sighup);
|
|
|
|
(void)signal(SIGINT, sigint);
|
|
|
|
(void)signal(SIGQUIT, sigquit);
|
|
|
|
(void)signal(SIGCHLD, sigchld);
|
|
|
|
free(p);
|
|
|
|
errno = saved_errno;
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
char *
|
|
|
|
skip(char *cp)
|
|
|
|
{
|
|
|
|
|
|
|
|
cp += strspn(cp, " \t");
|
|
|
|
if (*cp == '\0')
|
|
|
|
return (NULL);
|
|
|
|
return (cp);
|
|
|
|
}
|
|
|
|
|
|
|
|
char *
|
|
|
|
word(char *cp)
|
|
|
|
{
|
|
|
|
|
|
|
|
cp += strcspn(cp, " \t");
|
|
|
|
if (*cp == '\0')
|
|
|
|
return (NULL);
|
|
|
|
*cp++ = '\0';
|
|
|
|
cp += strspn(cp, " \t");
|
|
|
|
if (*cp == '\0')
|
|
|
|
return (NULL);
|
|
|
|
return (cp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Base the max value on the sizeof of the value we are reading */
|
|
|
|
#define GETNUM(field, nptr, min, errstr) \
|
|
|
|
getnum((nptr), (min), \
|
|
|
|
sizeof(field) == 8 ? LLONG_MAX : \
|
|
|
|
(sizeof(field) == 4 ? UINT_MAX : \
|
|
|
|
(sizeof(field) == 2 ? USHRT_MAX : UCHAR_MAX)), (errstr))
|
|
|
|
|
|
|
|
u_int64_t
|
|
|
|
getnum(char *nptr, u_int64_t min, u_int64_t max, const char **errstr)
|
|
|
|
{
|
|
|
|
char *p, c;
|
|
|
|
u_int64_t ret;
|
|
|
|
|
|
|
|
for (p = nptr; *p != '\0' && !isspace((unsigned char)*p); p++)
|
|
|
|
;
|
|
|
|
c = *p;
|
|
|
|
*p = '\0';
|
|
|
|
ret = strtonum(nptr, min, max, errstr);
|
|
|
|
*p = c;
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
duid_parse(struct disklabel *lp, char *s)
|
|
|
|
{
|
|
|
|
u_char duid[8];
|
|
|
|
char c;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (strlen(s) != 16)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
memset(duid, 0, sizeof(duid));
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
|
|
c = s[i];
|
|
|
|
if (c >= '0' && c <= '9')
|
|
|
|
c -= '0';
|
|
|
|
else if (c >= 'a' && c <= 'f')
|
|
|
|
c -= ('a' - 10);
|
|
|
|
else if (c >= 'A' && c <= 'F')
|
|
|
|
c -= ('A' - 10);
|
|
|
|
else
|
|
|
|
return -1;
|
|
|
|
duid[i / 2] <<= 4;
|
|
|
|
duid[i / 2] |= c & 0xf;
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(lp->d_uid, &duid, sizeof(lp->d_uid));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read an ascii label in from FILE f,
|
|
|
|
* in the same format as that put out by display(),
|
|
|
|
* and fill in lp.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
getasciilabel(FILE *f, struct disklabel *lp)
|
|
|
|
{
|
|
|
|
const char * const *cpp;
|
|
|
|
const char *s;
|
|
|
|
char *cp;
|
|
|
|
const char *errstr;
|
|
|
|
struct partition *pp;
|
|
|
|
char *mp, *tp, line[BUFSIZ];
|
|
|
|
char **omountpoints = NULL;
|
|
|
|
int lineno = 0, errors = 0;
|
|
|
|
u_int32_t v, fsize;
|
|
|
|
u_int64_t lv;
|
|
|
|
unsigned int part;
|
|
|
|
|
|
|
|
lp->d_version = 1;
|
|
|
|
|
|
|
|
if (!(omountpoints = calloc(MAXPARTITIONS, sizeof(char *))))
|
|
|
|
errx(4, "out of memory");
|
|
|
|
|
|
|
|
mpcopy(omountpoints, mountpoints);
|
|
|
|
for (part = 0; part < MAXPARTITIONS; part++) {
|
|
|
|
free(mountpoints[part]);
|
|
|
|
mountpoints[part] = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (fgets(line, sizeof(line), f)) {
|
|
|
|
lineno++;
|
|
|
|
mp = NULL;
|
|
|
|
if ((cp = strpbrk(line, "\r\n")))
|
|
|
|
*cp = '\0';
|
|
|
|
if ((cp = strpbrk(line, "#"))) {
|
|
|
|
*cp = '\0';
|
|
|
|
mp = skip(cp+1);
|
|
|
|
if (mp && *mp != '/')
|
|
|
|
mp = NULL;
|
|
|
|
}
|
|
|
|
cp = skip(line);
|
|
|
|
if (cp == NULL)
|
|
|
|
continue;
|
|
|
|
tp = strchr(cp, ':');
|
|
|
|
if (tp == NULL) {
|
|
|
|
warnx("line %d: syntax error", lineno);
|
|
|
|
errors++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
*tp++ = '\0', tp = skip(tp);
|
|
|
|
if (!strcmp(cp, "flags")) {
|
|
|
|
for (v = 0; (cp = tp) && *cp != '\0';) {
|
|
|
|
tp = word(cp);
|
|
|
|
if (!strcmp(cp, "badsect"))
|
|
|
|
; /* Ignore obsolete flag. */
|
|
|
|
else if (!strcmp(cp, "vendor"))
|
|
|
|
v |= D_VENDOR;
|
|
|
|
else {
|
|
|
|
warnx("line %d: bad flag: %s",
|
|
|
|
lineno, cp);
|
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
lp->d_flags = v;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (sscanf(cp, "%d partitions", &v) == 1) {
|
|
|
|
if (v == 0 || 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, "duid")) {
|
|
|
|
if (duid_parse(lp, tp) != 0) {
|
|
|
|
warnx("line %d: bad %s: %s", lineno, cp, tp);
|
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Ignore fields that are no longer used. */
|
|
|
|
if (!strcmp(cp, "rpm") ||
|
|
|
|
!strcmp(cp, "interleave") ||
|
|
|
|
!strcmp(cp, "trackskew") ||
|
|
|
|
!strcmp(cp, "cylinderskew") ||
|
|
|
|
!strcmp(cp, "headswitch") ||
|
|
|
|
!strcmp(cp, "track-to-track seek") ||
|
|
|
|
!strcmp(cp, "drivedata"))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Ignore fields that are forcibly set when label is read. */
|
|
|
|
if (!strcmp(cp, "total sectors") ||
|
|
|
|
!strcmp(cp, "boundstart") ||
|
|
|
|
!strcmp(cp, "boundend") ||
|
|
|
|
!strcmp(cp, "bytes/sector") ||
|
|
|
|
!strcmp(cp, "sectors/track") ||
|
|
|
|
!strcmp(cp, "sectors/cylinder") ||
|
|
|
|
!strcmp(cp, "tracks/cylinder") ||
|
2023-05-14 14:20:04 +02:00
|
|
|
!strcmp(cp, "cylinders") ||
|
|
|
|
!strcmp(cp, "type"))
|
2023-04-30 03:15:27 +02:00
|
|
|
continue;
|
|
|
|
|
|
|
|
if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') {
|
|
|
|
unsigned int part = *cp - 'a';
|
|
|
|
|
|
|
|
if (part >= lp->d_npartitions) {
|
|
|
|
if (part >= MAXPARTITIONS) {
|
|
|
|
warnx("line %d: bad partition name: %s",
|
|
|
|
lineno, cp);
|
|
|
|
errors++;
|
|
|
|
continue;
|
|
|
|
} else {
|
|
|
|
lp->d_npartitions = part + 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pp = &lp->d_partitions[part];
|
|
|
|
#define NXTNUM(n, field, errstr) { \
|
|
|
|
if (tp == NULL) { \
|
|
|
|
warnx("line %d: too few fields", lineno); \
|
|
|
|
errors++; \
|
|
|
|
break; \
|
|
|
|
} else \
|
|
|
|
cp = tp, tp = word(cp), (n) = GETNUM(field, cp, 0, errstr); \
|
|
|
|
}
|
|
|
|
NXTNUM(lv, lv, &errstr);
|
|
|
|
if (errstr) {
|
|
|
|
warnx("line %d: bad partition size: %s",
|
|
|
|
lineno, cp);
|
|
|
|
errors++;
|
|
|
|
} else {
|
|
|
|
DL_SETPSIZE(pp, lv);
|
|
|
|
}
|
|
|
|
NXTNUM(lv, lv, &errstr);
|
|
|
|
if (errstr) {
|
|
|
|
warnx("line %d: bad partition offset: %s",
|
|
|
|
lineno, cp);
|
|
|
|
errors++;
|
|
|
|
} else {
|
|
|
|
DL_SETPOFFSET(pp, lv);
|
|
|
|
}
|
|
|
|
if (tp == NULL) {
|
|
|
|
pp->p_fstype = FS_UNUSED;
|
|
|
|
goto gottype;
|
|
|
|
}
|
|
|
|
cp = tp, tp = word(cp);
|
|
|
|
cpp = fstypenames;
|
|
|
|
for (; cpp < &fstypenames[FSMAXTYPES]; cpp++)
|
|
|
|
if ((s = *cpp) && !strcasecmp(s, cp)) {
|
|
|
|
pp->p_fstype = cpp - fstypenames;
|
|
|
|
goto gottype;
|
|
|
|
}
|
|
|
|
if (isdigit((unsigned char)*cp))
|
|
|
|
v = GETNUM(pp->p_fstype, cp, 0, &errstr);
|
|
|
|
else
|
|
|
|
v = FSMAXTYPES;
|
|
|
|
if (errstr || 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 */
|
|
|
|
if (tp == NULL) /* ok to skip fsize/bsize */
|
|
|
|
break;
|
|
|
|
NXTNUM(fsize, fsize, &errstr);
|
|
|
|
if (fsize == 0)
|
|
|
|
break;
|
|
|
|
NXTNUM(v, v, &errstr);
|
|
|
|
pp->p_fragblock =
|
|
|
|
DISKLABELV1_FFS_FRAGBLOCK(fsize, v / fsize);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case FS_BSDFFS:
|
|
|
|
NXTNUM(fsize, fsize, &errstr);
|
|
|
|
if (fsize == 0)
|
|
|
|
break;
|
|
|
|
NXTNUM(v, v, &errstr);
|
|
|
|
pp->p_fragblock =
|
|
|
|
DISKLABELV1_FFS_FRAGBLOCK(fsize, v / fsize);
|
|
|
|
NXTNUM(pp->p_cpg, pp->p_cpg, &errstr);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (mp)
|
|
|
|
mountpoints[part] = strdup(mp);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
warnx("line %d: unknown field: %s", lineno, cp);
|
|
|
|
errors++;
|
|
|
|
next:
|
|
|
|
;
|
|
|
|
}
|
|
|
|
errors += checklabel(lp);
|
|
|
|
|
|
|
|
if (errors > 0)
|
|
|
|
mpcopy(mountpoints, omountpoints);
|
|
|
|
mpfree(omountpoints);
|
|
|
|
|
|
|
|
return (errors > 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check disklabel for errors and fill in
|
|
|
|
* derived fields according to supplied values.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
checklabel(struct disklabel *lp)
|
|
|
|
{
|
|
|
|
struct partition *pp;
|
|
|
|
int i, errors = 0;
|
|
|
|
char part;
|
|
|
|
|
|
|
|
if (lp->d_secsize == 0) {
|
2023-05-13 16:25:18 +02:00
|
|
|
warnx("sector size 0");
|
2023-04-30 03:15:27 +02:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
if (lp->d_nsectors == 0) {
|
2023-05-13 16:25:18 +02:00
|
|
|
warnx("sectors/track 0");
|
2023-04-30 03:15:27 +02:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
if (lp->d_ntracks == 0) {
|
2023-05-13 16:25:18 +02:00
|
|
|
warnx("tracks/cylinder 0");
|
2023-04-30 03:15:27 +02:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
if (lp->d_ncylinders == 0) {
|
2023-05-13 16:25:18 +02:00
|
|
|
warnx("cylinders/unit 0");
|
2023-04-30 03:15:27 +02:00
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
if (lp->d_secpercyl == 0)
|
|
|
|
lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
|
|
|
|
if (DL_GETDSIZE(lp) == 0)
|
|
|
|
DL_SETDSIZE(lp, (u_int64_t)lp->d_secpercyl * lp->d_ncylinders);
|
|
|
|
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 (DL_GETPSIZE(pp) == 0 && DL_GETPOFFSET(pp) != 0)
|
|
|
|
warnx("warning, partition %c: size 0, but offset %llu",
|
|
|
|
part, DL_GETPOFFSET(pp));
|
|
|
|
#ifdef SUN_CYLCHECK
|
|
|
|
if (lp->d_flags & D_VENDOR) {
|
|
|
|
if (i != RAW_PART && DL_GETPSIZE(pp) % lp->d_secpercyl)
|
|
|
|
warnx("warning, partition %c: size %% "
|
|
|
|
"cylinder-size != 0", part);
|
|
|
|
if (i != RAW_PART && DL_GETPOFFSET(pp) % lp->d_secpercyl)
|
|
|
|
warnx("warning, partition %c: offset %% "
|
|
|
|
"cylinder-size != 0", part);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef SUN_AAT0
|
|
|
|
if ((lp->d_flags & D_VENDOR) &&
|
|
|
|
i == 0 && DL_GETPSIZE(pp) != 0 && DL_GETPOFFSET(pp) != 0) {
|
|
|
|
warnx("this architecture requires partition 'a' to "
|
|
|
|
"start at sector 0");
|
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
if (DL_GETPOFFSET(pp) > DL_GETDSIZE(lp)) {
|
|
|
|
warnx("partition %c: offset past end of unit", part);
|
|
|
|
errors++;
|
|
|
|
} else if (DL_GETPOFFSET(pp) + DL_GETPSIZE(pp) >
|
|
|
|
DL_GETDSIZE(lp)) {
|
|
|
|
warnx("partition %c: extends past end of unit",
|
|
|
|
part);
|
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
#if 0
|
|
|
|
if (pp->p_frag == 0 && pp->p_fsize != 0) {
|
|
|
|
warnx("partition %c: block size < fragment size", part);
|
|
|
|
errors++;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
for (; i < MAXPARTITIONS; i++) {
|
|
|
|
part = 'a' + i;
|
|
|
|
pp = &lp->d_partitions[i];
|
|
|
|
if (DL_GETPSIZE(pp) || DL_GETPOFFSET(pp))
|
|
|
|
warnx("warning, unused partition %c: size %llu "
|
|
|
|
"offset %llu", part, DL_GETPSIZE(pp),
|
|
|
|
DL_GETPOFFSET(pp));
|
|
|
|
}
|
|
|
|
return (errors > 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
cmplabel(struct disklabel *lp1, struct disklabel *lp2)
|
|
|
|
{
|
|
|
|
struct disklabel lab1 = *lp1;
|
|
|
|
struct disklabel lab2 = *lp2;
|
|
|
|
|
|
|
|
/* We don't compare these fields */
|
|
|
|
lab1.d_magic = lab2.d_magic;
|
|
|
|
lab1.d_magic2 = lab2.d_magic2;
|
|
|
|
lab1.d_checksum = lab2.d_checksum;
|
|
|
|
lab1.d_bstart = lab2.d_bstart;
|
|
|
|
lab1.d_bstarth = lab2.d_bstarth;
|
|
|
|
lab1.d_bend = lab2.d_bend;
|
|
|
|
lab1.d_bendh = lab2.d_bendh;
|
|
|
|
|
|
|
|
return (memcmp(&lab1, &lab2, sizeof(struct disklabel)));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
usage(void)
|
|
|
|
{
|
|
|
|
fprintf(stderr,
|
|
|
|
"usage: disklabel [-Acdtv] [-h | -p unit] [-T file] disk\n");
|
|
|
|
fprintf(stderr,
|
|
|
|
" disklabel -w [-Acdnv] [-T file] disk disktype [packid]\n");
|
|
|
|
fprintf(stderr,
|
|
|
|
" disklabel -e [-Acdnv] [-T file] disk\n");
|
|
|
|
fprintf(stderr,
|
|
|
|
" disklabel -E [-Acdnv] [-F|-f file] [-T file] disk\n");
|
|
|
|
fprintf(stderr,
|
|
|
|
" disklabel -R [-nv] [-F|-f file] disk protofile\n");
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
}
|