NetBSD/distrib/utils/sysinst/label.c

477 lines
11 KiB
C

/* $NetBSD: label.c,v 1.19 2001/01/14 02:38:14 mrg Exp $ */
/*
* Copyright 1997 Jonathan Stone
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Jonathan Stone.
* 4. The name of Jonathan Stone may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY JONATHAN STONE ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: label.c,v 1.19 2001/01/14 02:38:14 mrg Exp $");
#endif
#include <sys/types.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <util.h>
#include <unistd.h>
#include <sys/dkio.h>
#include <sys/ioctl.h>
#include "defs.h"
#include "msg_defs.h"
#include "menu_defs.h"
/*
* local prototypes
*/
static int boringpart (partinfo *lp, int i, int rawpart, int bsdpart);
int checklabel (partinfo *lp, int nparts, int rawpart, int bsdpart,
int *bad1, int *bad2);
void translate_partinfo (partinfo *lp, struct partition *pp);
void atofsb (const char *, int *, int *);
/*
* Return 1 iff partition i in lp should be ignored when checking
* for overlapping partitions.
*/
static int
boringpart(lp, i, rawpart, bsdpart)
partinfo *lp;
int i;
int rawpart;
int bsdpart;
{
if (i == rawpart || i == bsdpart ||
lp[i].pi_fstype == FS_UNUSED || lp[i].pi_size == 0)
return 1;
return 0;
}
/*
* Check a sysinst label structure for overlapping partitions.
* Returns 0 if no overlapping partition found, nonzero otherwise.
* Sets reference arguments ovly1 and ovly2 to the indices of
* overlapping partitions if any are found.
*/
int
checklabel(lp, nparts, rawpart, bsdpart, ovly1, ovly2)
partinfo *lp;
int nparts;
int rawpart;
int bsdpart;
int *ovly1;
int *ovly2;
{
int i;
int j;
*ovly1 = -1;
*ovly2 = -1;
for (i = 0; i < nparts - 1; i ++ ) {
partinfo *ip = &lp[i];
int istart, istop;
/* skip unused or reserved partitions */
if (boringpart(lp, i, rawpart, bsdpart))
continue;
/*
* check succeding partitions for overlap.
* O(n^2), but n is small (currently <= 16).
*/
istart = ip->pi_offset;
istop = istart + ip->pi_size;
for (j = i+1; j < nparts; j++) {
partinfo *jp = &lp[j];
int jstart, jstop;
/* skip unused or reserved partitions */
if (boringpart(lp, j, rawpart, bsdpart))
continue;
jstart = jp->pi_offset;
jstop = jstart + jp->pi_size;
/* overlap? */
if ((istart <= jstart && jstart < istop) ||
(jstart <= istart && istart < jstop)) {
*ovly1 = i;
*ovly2 = j;
return (1);
}
}
}
return (0);
}
/*
* Check a disklabel.
* If there are overlapping active parititons,
* Ask the user if they want to edit the parittion or give up.
*/
int
edit_and_check_label(lp, nparts, rawpart, bsdpart)
partinfo *lp;
int nparts;
int rawpart;
int bsdpart;
{
while (1) {
int i, j;
/* first give the user the option to edit the label... */
process_menu(MENU_fspartok);
/* User thinks the label is OK. check for overlaps.*/
if (checklabel(lp, nparts, rawpart, bsdpart, &i, &j) == 0) {
/* partitions are OK. */
return (1);
}
/* partitions overlap. */
msg_display(MSG_partitions_overlap, 'a' + i, 'a' + j);
/*XXX*/
msg_display_add(MSG_edit_partitions_again);
process_menu(MENU_yesno);
if (!yesno)
return(0);
}
/*NOTREACHED*/
}
void
emptylabel(lp)
partinfo *lp;
{
register int i, maxpart;
maxpart = getmaxpartitions();
for (i = 0; i < maxpart; i++) {
lp[i].pi_fstype = FS_UNUSED;
lp[i].pi_offset = 0;
lp[i].pi_size = 0;
lp[i].pi_bsize = 0;
lp[i].pi_fsize = 0;
}
}
int
savenewlabel(lp, nparts)
partinfo *lp;
int nparts;
{
FILE *f;
int i;
#ifdef DEBUG
f = fopen("/tmp/disktab", "a");
#else
/* Create the disktab.preinstall */
f = fopen("/etc/disktab", "w");
#endif
if (logging)
(void)fprintf(log, "Creating disklabel %s\n", bsddiskname);
scripting_fprintf(NULL, "cat <<EOF >>/etc/disktab\n");
if (f == NULL) {
endwin();
(void)fprintf(stderr, "Could not open /etc/disktab");
if (logging)
(void)fprintf(log, "Failed to open /etc/diskabel for appending.\n");
exit (1);
}
scripting_fprintf(f, "%s|NetBSD installation generated:\\\n", bsddiskname);
scripting_fprintf(f, "\t:dt=%s:ty=winchester:\\\n", disktype);
scripting_fprintf(f, "\t:nc#%d:nt#%d:ns#%d:\\\n", dlcyl, dlhead, dlsec);
scripting_fprintf(f, "\t:sc#%d:su#%d:\\\n", dlhead*dlsec, dlsize);
scripting_fprintf(f, "\t:se#%d:%s\\\n", sectorsize, doessf);
for (i = 0; i < nparts; i++) {
scripting_fprintf(f, "\t:p%c#%d:o%c#%d:t%c=%s:",
'a'+i, bsdlabel[i].pi_size,
'a'+i, bsdlabel[i].pi_offset,
'a'+i, fstypenames[bsdlabel[i].pi_fstype]);
if (PI_ISBSDFS(&bsdlabel[i]))
scripting_fprintf (f, "b%c#%d:f%c#%d:ta=4.2BSD:",
'a'+i, bsdlabel[i].pi_bsize,
'a'+i, bsdlabel[i].pi_fsize);
if (i < nparts - 1)
scripting_fprintf(f, "\\\n");
else
scripting_fprintf(f, "\n");
}
fclose (f);
scripting_fprintf(NULL, "EOF\n");
fflush(NULL);
return(0);
}
/*
* XXX MSDOS?
*/
void
translate_partinfo(lp, pp)
partinfo *lp;
struct partition *pp;
{
lp->pi_fstype = pp->p_fstype;
switch (pp->p_fstype) {
case FS_UNUSED: /* XXX */
case FS_SWAP:
break;
case FS_BSDLFS:
case FS_BSDFFS:
(*lp).pi_offset = 0;
(*lp).pi_size = 0;
(*lp).pi_bsize = pp->p_fsize * pp->p_frag;
(*lp).pi_fsize = pp->p_fsize;
break;
case FS_EX2FS:
(*lp).pi_fstype = FS_UNUSED; /* XXX why? */
(*lp).pi_bsize = pp->p_fsize * pp->p_frag;
(*lp).pi_fsize = pp->p_fsize;
break;
default:
(*lp).pi_fstype = FS_UNUSED;
break;
}
}
/*
* Read a label from disk into a sysist label structure.
*/
int
incorelabel(dkname, lp)
const char *dkname;
partinfo *lp;
{
struct disklabel lab;
int fd;
int i, maxpart;
struct partition *pp;
char nambuf[STRSIZE];
fd = opendisk(dkname, O_RDONLY, nambuf, STRSIZE, 0);
if (ioctl(fd, DIOCGDINFO, &lab) < 0) {
/*XXX err(4, "ioctl DIOCGDINFO");*/
return(errno);
}
close(fd);
touchwin(stdscr);
maxpart = getmaxpartitions();
if (maxpart > 16)
maxpart = 16;
/* XXX set globals used by MD code to compute disk size? */
pp = &lab.d_partitions[0];
emptylabel(lp);
for (i = 0; i < maxpart; i++) {
translate_partinfo(lp+i, pp+i);
}
return (0);
}
/* Ask for a partition offset, check bounds and do the needed roudups */
int
getpartoff(msg_no, defpartstart)
msg msg_no;
int defpartstart;
{
char isize[20], maxpartc;
int i, localsizemult, partn;
maxpartc = 'a' + getmaxpartitions() - 1;
while (1) {
msg_table_add(MSG_label_offset_special, maxpartc);
snprintf (isize, 20, "%d", (defpartstart)/sizemult);
msg_prompt_add(msg_no, (defpartstart > 0) ? isize : NULL,
isize, 20);
if (isize[1] == '\0' && isize[0] >= 'a' &&
isize[0] <= maxpartc) {
partn = isize[0] - 'a';
i = bsdlabel[partn].pi_size + bsdlabel[partn].pi_offset;
localsizemult = 1;
} else if (atoi(isize) == -1) {
i = ptstart;
localsizemult = 1;
} else
atofsb(isize, &i, &localsizemult);
if (i < 0)
continue;
/* round to cylinder size if localsizemult != 1 */
i = NUMSEC(i/localsizemult, localsizemult, dlcylsize);
/* Adjust to start of slice if needed */
if ((i < ptstart && (ptstart - i) < localsizemult) ||
(i > ptstart && (i - ptstart) < localsizemult)) {
i = ptstart;
}
if (i > fsdsize) {
msg_display(MSG_startoutsidedisk);
continue;
}
return i;
}
/* NOTREACHED */
}
/* Ask for a partition size, check bounds and does the needed roudups */
int
getpartsize(msg_no, partstart, defpartsize)
msg msg_no;
int partstart;
int defpartsize;
{
char isize[20], maxpartc;
int i, partend, localsizemult;
int fsptend = ptstart + fsptsize;
int partn;
maxpartc = 'a' + getmaxpartitions() - 1;
while (1) {
msg_table_add(MSG_label_size_special, maxpartc);
snprintf (isize, 20, "%d", (defpartsize)/sizemult);
msg_prompt_add (msg_no, (defpartsize != 0) ? isize : 0,
isize, 20);
if (isize[1] == '\0' && isize[0] >= 'a' &&
isize[0] <= maxpartc) {
partn = isize[0] - 'a';
i = bsdlabel[partn].pi_offset - partstart;
localsizemult = 1;
} else if (atoi(isize) == -1) {
i = fsptend - partstart;
localsizemult = 1;
} else
atofsb(isize, &i, &localsizemult);
if (i < 0)
continue;
/*
* partend is aligned to a cylinder if localsizemult
* is not 1 sector
*/
partend = NUMSEC((partstart + i) / localsizemult,
localsizemult, dlcylsize);
/* Align to end-of-disk or end-of-slice if close enouth */
if (fsdsize > partend && (fsdsize - partend) < localsizemult)
partend = fsdsize;
if (fsptend > partend && (fsptend - partend) < localsizemult)
partend = fsptend;
/* sanity checks */
if (partend > fsdsize) {
partend = fsdsize;
msg_display(MSG_endoutsidedisk,
(partend - partstart) / sizemult, multname);
process_menu(MENU_ok);
}
/* return value */
return (partend - partstart);
}
/* NOTREACHED */
}
/*
* convert a string to a number of sectors, with a possible unit
* 150M = 150 Megabytes
* 2000c = 2000 cylinders
* 150256s = 150256 sectors
* Without units, use the default (sizemult)
* returns the number of sectors, and the unit used (for roudups).
*/
void
atofsb(str, val, localsizemult)
const char *str;
int *val;
int *localsizemult;
{
int i;
*localsizemult = sizemult;
if (str[0] == '\0') {
*val = -1;
return;
}
*val = 0;
for (i = 0; str[i] != '\0'; i++) {
if (str[i] >= '0' && str[i] <= '9') {
*val = (*val) * 10 + str[i] - '0';
continue;
}
if (str[i + 1] != '\0') {
/* A non-digit caracter, not at the end */
*val = -1;
return;
}
if (str[i] == 'M') {
*localsizemult = MEG / sectorsize;
break;
}
if (str[i] == 'c') {
*localsizemult = dlcylsize;
break;
}
if (str[i] == 's') {
*localsizemult = 1;
break;
}
/* not a known unit */
*val = -1;
return;
}
*val = (*val) * (*localsizemult);
return;
}