477 lines
11 KiB
C
477 lines
11 KiB
C
/* $NetBSD: label.c,v 1.21 2002/07/29 01:30:25 grant Exp $ */
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/*
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* Copyright 1997 Jonathan Stone
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* All rights reserved.
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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 for the NetBSD Project by
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* Jonathan Stone.
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* 4. The name of Jonathan Stone may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JONATHAN STONE ``AS IS''
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* AND 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 PIERMONT INFORMATION SYSTEMS INC. BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: label.c,v 1.21 2002/07/29 01:30:25 grant Exp $");
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#endif
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <util.h>
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#include <unistd.h>
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#include <sys/dkio.h>
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#include <sys/ioctl.h>
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#include "defs.h"
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#include "msg_defs.h"
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#include "menu_defs.h"
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/*
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* local prototypes
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*/
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static int boringpart (partinfo *lp, int i, int rawpart, int bsdpart);
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int checklabel (partinfo *lp, int nparts, int rawpart, int bsdpart,
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int *bad1, int *bad2);
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void translate_partinfo (partinfo *lp, struct partition *pp);
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void atofsb (const char *, int *, int *);
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/*
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* Return 1 if partition i in lp should be ignored when checking
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* for overlapping partitions.
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*/
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static int
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boringpart(lp, i, rawpart, bsdpart)
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partinfo *lp;
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int i;
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int rawpart;
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int bsdpart;
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{
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if (i == rawpart || i == bsdpart ||
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lp[i].pi_fstype == FS_UNUSED || lp[i].pi_size == 0)
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return 1;
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return 0;
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}
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/*
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* Check a sysinst label structure for overlapping partitions.
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* Returns 0 if no overlapping partition found, nonzero otherwise.
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* Sets reference arguments ovly1 and ovly2 to the indices of
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* overlapping partitions if any are found.
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*/
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int
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checklabel(lp, nparts, rawpart, bsdpart, ovly1, ovly2)
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partinfo *lp;
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int nparts;
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int rawpart;
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int bsdpart;
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int *ovly1;
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int *ovly2;
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{
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int i;
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int j;
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*ovly1 = -1;
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*ovly2 = -1;
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for (i = 0; i < nparts - 1; i ++ ) {
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partinfo *ip = &lp[i];
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int istart, istop;
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/* skip unused or reserved partitions */
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if (boringpart(lp, i, rawpart, bsdpart))
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continue;
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/*
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* check succeding partitions for overlap.
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* O(n^2), but n is small (currently <= 16).
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*/
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istart = ip->pi_offset;
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istop = istart + ip->pi_size;
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for (j = i+1; j < nparts; j++) {
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partinfo *jp = &lp[j];
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int jstart, jstop;
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/* skip unused or reserved partitions */
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if (boringpart(lp, j, rawpart, bsdpart))
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continue;
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jstart = jp->pi_offset;
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jstop = jstart + jp->pi_size;
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/* overlap? */
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if ((istart <= jstart && jstart < istop) ||
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(jstart <= istart && istart < jstop)) {
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*ovly1 = i;
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*ovly2 = j;
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return (1);
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}
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}
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}
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return (0);
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}
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/*
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* Check a disklabel.
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* If there are overlapping active parititons,
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* Ask the user if they want to edit the parittion or give up.
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*/
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int
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edit_and_check_label(lp, nparts, rawpart, bsdpart)
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partinfo *lp;
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int nparts;
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int rawpart;
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int bsdpart;
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{
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while (1) {
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int i, j;
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/* first give the user the option to edit the label... */
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process_menu(MENU_fspartok);
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/* User thinks the label is OK. check for overlaps */
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if (checklabel(lp, nparts, rawpart, bsdpart, &i, &j) == 0) {
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/* partitions are OK */
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return (1);
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}
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/* partitions overlap */
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msg_display(MSG_partitions_overlap, 'a' + i, 'a' + j);
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/*XXX*/
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msg_display_add(MSG_edit_partitions_again);
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process_menu(MENU_yesno);
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if (!yesno)
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return(0);
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}
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/*NOTREACHED*/
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}
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void
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emptylabel(lp)
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partinfo *lp;
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{
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register int i, maxpart;
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maxpart = getmaxpartitions();
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for (i = 0; i < maxpart; i++) {
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lp[i].pi_fstype = FS_UNUSED;
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lp[i].pi_offset = 0;
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lp[i].pi_size = 0;
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lp[i].pi_bsize = 0;
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lp[i].pi_fsize = 0;
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}
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}
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int
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savenewlabel(lp, nparts)
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partinfo *lp;
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int nparts;
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{
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FILE *f;
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int i;
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#ifdef DEBUG
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f = fopen("/tmp/disktab", "a");
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#else
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/* Create the disktab.preinstall */
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f = fopen("/etc/disktab", "w");
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#endif
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if (logging)
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(void)fprintf(log, "Creating disklabel %s\n", bsddiskname);
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scripting_fprintf(NULL, "cat <<EOF >>/etc/disktab\n");
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if (f == NULL) {
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endwin();
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(void)fprintf(stderr, "Could not open /etc/disktab");
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if (logging)
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(void)fprintf(log, "Failed to open /etc/diskabel for appending.\n");
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exit (1);
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}
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scripting_fprintf(f, "%s|NetBSD installation generated:\\\n", bsddiskname);
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scripting_fprintf(f, "\t:dt=%s:ty=winchester:\\\n", disktype);
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scripting_fprintf(f, "\t:nc#%d:nt#%d:ns#%d:\\\n", dlcyl, dlhead, dlsec);
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scripting_fprintf(f, "\t:sc#%d:su#%d:\\\n", dlhead*dlsec, dlsize);
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scripting_fprintf(f, "\t:se#%d:%s\\\n", sectorsize, doessf);
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for (i = 0; i < nparts; i++) {
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scripting_fprintf(f, "\t:p%c#%d:o%c#%d:t%c=%s:",
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'a'+i, bsdlabel[i].pi_size,
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'a'+i, bsdlabel[i].pi_offset,
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'a'+i, fstypenames[bsdlabel[i].pi_fstype]);
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if (PI_ISBSDFS(&bsdlabel[i]))
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scripting_fprintf (f, "b%c#%d:f%c#%d:ta=4.2BSD:",
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'a'+i, bsdlabel[i].pi_bsize,
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'a'+i, bsdlabel[i].pi_fsize);
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if (i < nparts - 1)
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scripting_fprintf(f, "\\\n");
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else
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scripting_fprintf(f, "\n");
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}
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fclose (f);
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scripting_fprintf(NULL, "EOF\n");
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fflush(NULL);
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return(0);
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}
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/*
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* XXX MSDOS?
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*/
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void
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translate_partinfo(lp, pp)
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partinfo *lp;
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struct partition *pp;
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{
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lp->pi_fstype = pp->p_fstype;
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switch (pp->p_fstype) {
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case FS_UNUSED: /* XXX */
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case FS_SWAP:
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break;
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case FS_BSDLFS:
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case FS_BSDFFS:
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(*lp).pi_offset = 0;
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(*lp).pi_size = 0;
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(*lp).pi_bsize = pp->p_fsize * pp->p_frag;
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(*lp).pi_fsize = pp->p_fsize;
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break;
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case FS_EX2FS:
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(*lp).pi_fstype = FS_UNUSED; /* XXX why? */
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(*lp).pi_bsize = pp->p_fsize * pp->p_frag;
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(*lp).pi_fsize = pp->p_fsize;
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break;
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default:
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(*lp).pi_fstype = FS_UNUSED;
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break;
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}
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}
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/*
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* Read a label from disk into a sysist label structure.
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*/
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int
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incorelabel(dkname, lp)
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const char *dkname;
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partinfo *lp;
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{
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struct disklabel lab;
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int fd;
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int i, maxpart;
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struct partition *pp;
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char nambuf[STRSIZE];
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fd = opendisk(dkname, O_RDONLY, nambuf, STRSIZE, 0);
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if (ioctl(fd, DIOCGDINFO, &lab) < 0) {
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/*XXX err(4, "ioctl DIOCGDINFO");*/
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return(errno);
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}
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close(fd);
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touchwin(stdscr);
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maxpart = getmaxpartitions();
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if (maxpart > 16)
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maxpart = 16;
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/* XXX set globals used by MD code to compute disk size? */
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pp = &lab.d_partitions[0];
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emptylabel(lp);
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for (i = 0; i < maxpart; i++) {
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translate_partinfo(lp+i, pp+i);
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}
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return (0);
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}
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/* Ask for a partition offset, check bounds and do the needed roundups */
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int
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getpartoff(msg_no, defpartstart)
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msg msg_no;
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int defpartstart;
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{
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char isize[20], maxpartc;
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int i, localsizemult, partn;
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maxpartc = 'a' + getmaxpartitions() - 1;
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while (1) {
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msg_table_add(MSG_label_offset_special, maxpartc);
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snprintf (isize, 20, "%d", (defpartstart)/sizemult);
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msg_prompt_add(msg_no, (defpartstart > 0) ? isize : NULL,
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isize, 20);
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if (isize[1] == '\0' && isize[0] >= 'a' &&
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isize[0] <= maxpartc) {
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partn = isize[0] - 'a';
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i = bsdlabel[partn].pi_size + bsdlabel[partn].pi_offset;
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localsizemult = 1;
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} else if (atoi(isize) == -1) {
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i = ptstart;
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localsizemult = 1;
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} else
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atofsb(isize, &i, &localsizemult);
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if (i < 0)
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continue;
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/* round to cylinder size if localsizemult != 1 */
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i = NUMSEC(i/localsizemult, localsizemult, dlcylsize);
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/* Adjust to start of slice if needed */
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if ((i < ptstart && (ptstart - i) < localsizemult) ||
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(i > ptstart && (i - ptstart) < localsizemult)) {
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i = ptstart;
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}
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if (i > fsdsize) {
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msg_display(MSG_startoutsidedisk);
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continue;
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}
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return i;
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}
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/* NOTREACHED */
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}
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/* Ask for a partition size, check bounds and does the needed roundups */
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int
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getpartsize(msg_no, partstart, defpartsize)
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msg msg_no;
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int partstart;
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int defpartsize;
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{
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char isize[20], maxpartc;
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int i, partend, localsizemult;
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int fsptend = ptstart + fsptsize;
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int partn;
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maxpartc = 'a' + getmaxpartitions() - 1;
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while (1) {
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msg_table_add(MSG_label_size_special, maxpartc);
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snprintf (isize, 20, "%d", (defpartsize)/sizemult);
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msg_prompt_add (msg_no, (defpartsize != 0) ? isize : 0,
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isize, 20);
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if (isize[1] == '\0' && isize[0] >= 'a' &&
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isize[0] <= maxpartc) {
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partn = isize[0] - 'a';
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i = bsdlabel[partn].pi_offset - partstart;
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localsizemult = 1;
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} else if (atoi(isize) == -1) {
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i = fsptend - partstart;
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localsizemult = 1;
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} else
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atofsb(isize, &i, &localsizemult);
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if (i < 0)
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continue;
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/*
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* partend is aligned to a cylinder if localsizemult
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* is not 1 sector
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*/
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partend = NUMSEC((partstart + i) / localsizemult,
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localsizemult, dlcylsize);
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/* Align to end-of-disk or end-of-slice if close enough */
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if (fsdsize > partend && (fsdsize - partend) < localsizemult)
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partend = fsdsize;
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if (fsptend > partend && (fsptend - partend) < localsizemult)
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partend = fsptend;
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/* sanity checks */
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if (partend > fsdsize) {
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partend = fsdsize;
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msg_display(MSG_endoutsidedisk,
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(partend - partstart) / sizemult, multname);
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process_menu(MENU_ok);
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}
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/* return value */
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return (partend - partstart);
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}
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/* NOTREACHED */
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}
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/*
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* convert a string to a number of sectors, with a possible unit
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* 150M = 150 Megabytes
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* 2000c = 2000 cylinders
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* 150256s = 150256 sectors
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* Without units, use the default (sizemult)
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* returns the number of sectors, and the unit used (for roundups).
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*/
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void
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atofsb(str, val, localsizemult)
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const char *str;
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int *val;
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int *localsizemult;
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{
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int i;
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*localsizemult = sizemult;
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if (str[0] == '\0') {
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*val = -1;
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return;
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}
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*val = 0;
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for (i = 0; str[i] != '\0'; i++) {
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if (str[i] >= '0' && str[i] <= '9') {
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*val = (*val) * 10 + str[i] - '0';
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continue;
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}
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if (str[i + 1] != '\0') {
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/* A non-digit caracter, not at the end */
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*val = -1;
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return;
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}
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if (str[i] == 'M') {
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*localsizemult = MEG / sectorsize;
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break;
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}
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if (str[i] == 'c') {
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*localsizemult = dlcylsize;
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break;
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}
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if (str[i] == 's') {
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*localsizemult = 1;
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break;
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}
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/* not a known unit */
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*val = -1;
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return;
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}
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*val = (*val) * (*localsizemult);
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return;
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}
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