newboot

1 files changed, 0 insertions, 354 deletions

diff --git a/sys/src/boot/pc/part.c b/sys/src/boot/pc/part.c
deleted file mode 100644
index e7dfc72fc..000000000
--- a/sys/src/boot/pc/part.c
+++ /dev/null
@@ -1,354 +0,0 @@
-#include	"u.h"
-#include	"lib.h"
-#include	"mem.h"
-#include	"dat.h"
-#include	"fns.h"
-
-#include	"sd.h"
-#include	"fs.h"
-
-enum {
-	Npart = 32
-};
-
-uchar *mbrbuf, *partbuf;
-int nbuf;
-
-#define trace 0
-
-int
-tsdbio(SDunit *unit, SDpart *part, void *a, vlong off, int mbr)
-{
-	uchar *b;
-
-	if(sdbio(unit, part, a, unit->secsize, off) != unit->secsize){
-		if(trace)
-			print("%s: read %lud at %lld failed\n", unit->name,
-				unit->secsize, (vlong)part->start*unit->secsize+off);
-		return -1;
-	}
-	b = a;
-	if(mbr && (b[0x1FE] != 0x55 || b[0x1FF] != 0xAA)){
-		if(trace)
-			print("%s: bad magic %.2ux %.2ux at %lld\n",
-				unit->name, b[0x1FE], b[0x1FF],
-				(vlong)part->start*unit->secsize+off);
-		return -1;
-	}
-	return 0;
-}
-
-/*
- *  read partition table.  The partition table is just ascii strings.
- */
-#define MAGIC "plan9 partitions"
-static void
-oldp9part(SDunit *unit)
-{
-	SDpart *pp;
-	char *field[3], *line[Npart+1];
-	ulong n, start, end;
-	int i;
-
-	/*
-	 *  We have some partitions already.
-	 */
-	pp = &unit->part[unit->npart];
-
-	/*
-	 * We prefer partition tables on the second to last sector,
-	 * but some old disks use the last sector instead.
-	 */
-	strcpy(pp->name, "partition");
-	pp->start = unit->sectors - 2;
-	pp->end = unit->sectors - 1;
-
-	if(tsdbio(unit, pp, partbuf, 0, 0) < 0)
-		return;
-
-	if(strncmp((char*)partbuf, MAGIC, sizeof(MAGIC)-1) != 0) {
-		/* not found on 2nd last sector; look on last sector */
-		pp->start++;
-		pp->end++;
-		if(tsdbio(unit, pp, partbuf, 0, 0) < 0)
-			return;
-		if(strncmp((char*)partbuf, MAGIC, sizeof(MAGIC)-1) != 0)
-			return;
-		print("%s: using old plan9 partition table on last sector\n", unit->name);
-	}else
-		print("%s: using old plan9 partition table on 2nd-to-last sector\n", unit->name);
-
-	/* we found a partition table, so add a partition partition */
-	unit->npart++;
-	partbuf[unit->secsize-1] = '\0';
-
-	/*
-	 * parse partition table
-	 */
-	n = getfields((char*)partbuf, line, Npart+1, '\n');
-	if(n && strncmp(line[0], MAGIC, sizeof(MAGIC)-1) == 0){
-		for(i = 1; i < n && unit->npart < SDnpart; i++){
-			if(getfields(line[i], field, 3, ' ') != 3)
-				break;
-			start = strtoull(field[1], 0, 0);
-			end = strtoull(field[2], 0, 0);
-			if(start >= end || end > unit->sectors)
-				break;
-			sdaddpart(unit, field[0], start, end);
-		}
-	}	
-}
-
-static void
-p9part(SDunit *unit, char *name)
-{
-	SDpart *p;
-	char *field[4], *line[Npart+1];
-	uvlong start, end;
-	int i, n;
-
-	p = sdfindpart(unit, name);
-	if(p == nil)
-		return;
-
-	if(tsdbio(unit, p, partbuf, unit->secsize, 0) < 0)
-		return;
-	partbuf[unit->secsize-1] = '\0';
-
-	if(strncmp((char*)partbuf, "part ", 5) != 0)
-		return;
-
-	n = getfields((char*)partbuf, line, Npart+1, '\n');
-	if(n == 0)
-		return;
-	for(i = 0; i < n && unit->npart < SDnpart; i++){
-		if(strncmp(line[i], "part ", 5) != 0)
-			break;
-		if(getfields(line[i], field, 4, ' ') != 4)
-			break;
-		start = strtoull(field[2], 0, 0);
-		end   = strtoull(field[3], 0, 0);
-		if(start >= end || end > unit->sectors)
-			break;
-		sdaddpart(unit, field[1], p->start+start, p->start+end);
-	}
-}
-
-int
-isdos(int t)
-{
-	return t==FAT12 || t==FAT16 || t==FATHUGE || t==FAT32 || t==FAT32X;
-}
-
-int
-isextend(int t)
-{
-	return t==EXTEND || t==EXTHUGE || t==LEXTEND;
-}
-
-/* 
- * Fetch the first dos and all plan9 partitions out of the MBR partition table.
- * We return -1 if we did not find a plan9 partition.
- */
-static int
-mbrpart(SDunit *unit)
-{
-	Dospart *dp;
-	ulong taboffset, start, end;
-	ulong firstxpart, nxtxpart;
-	int havedos, i, nplan9;
-	char name[10];
-
-	taboffset = 0;
-	dp = (Dospart*)&mbrbuf[0x1BE];
-	{
-		/* get the MBR (allowing for DMDDO) */
-		if(tsdbio(unit, &unit->part[0], mbrbuf,
-		    (vlong)taboffset * unit->secsize, 1) < 0)
-			return -1;
-		for(i=0; i<4; i++)
-			if(dp[i].type == DMDDO) {
-				if(trace)
-					print("DMDDO partition found\n");
-				taboffset = 63;
-				if(tsdbio(unit, &unit->part[0], mbrbuf,
-				    (vlong)taboffset * unit->secsize, 1) < 0)
-					return -1;
-				i = -1;	/* start over */
-			}
-	}
-
-	/*
-	 * Read the partitions, first from the MBR and then
-	 * from successive extended partition tables.
-	 */
-	nplan9 = 0;
-	havedos = 0;
-	firstxpart = 0;
-	for(;;) {
-		if(tsdbio(unit, &unit->part[0], mbrbuf,
-		    (vlong)taboffset * unit->secsize, 1) < 0)
-			return -1;
-		if(trace) {
-			if(firstxpart)
-				print("%s ext %lud ", unit->name, taboffset);
-			else
-				print("%s mbr ", unit->name);
-		}
-		nxtxpart = 0;
-		for(i=0; i<4; i++) {
-			if(trace)
-				print("dp %d...", dp[i].type);
-			start = taboffset+GLONG(dp[i].start);
-			end = start+GLONG(dp[i].len);
-
-			if(dp[i].type == PLAN9) {
-				if(nplan9 == 0)
-					strcpy(name, "plan9");
-				else
-					sprint(name, "plan9.%d", nplan9);
-				sdaddpart(unit, name, start, end);
-				p9part(unit, name);
-				nplan9++;
-			}
-
-			/*
-			 * We used to take the active partition (and then the first
-			 * when none are active).  We have to take the first here,
-			 * so that the partition we call ``dos'' agrees with the
-			 * partition disk/fdisk calls ``dos''. 
-			 */
-			if(havedos==0 && isdos(dp[i].type)){
-				havedos = 1;
-				sdaddpart(unit, "dos", start, end);
-			}
-
-			/* nxtxpart is relative to firstxpart (or 0), not taboffset */
-			if(isextend(dp[i].type)){
-				nxtxpart = start-taboffset+firstxpart;
-				if(trace)
-					print("link %lud...", nxtxpart);
-			}
-		}
-		if(trace)
-			print("\n");
-
-		if(!nxtxpart)
-			break;
-		if(!firstxpart)
-			firstxpart = nxtxpart;
-		taboffset = nxtxpart;
-	}	
-	return nplan9 ? 0 : -1;
-}
-
-/*
- * To facilitate booting from CDs, we create a partition for
- * the boot floppy image embedded in a bootable CD.
- */
-static int
-part9660(SDunit *unit)
-{
-	uchar buf[2048];
-	ulong a, n;
-	uchar *p;
-
-	if(unit->secsize != 2048)
-		return -1;
-
-	if(sdbio(unit, &unit->part[0], buf, 2048, 17*2048) < 0)
-		return -1;
-
-	if(buf[0] || strcmp((char*)buf+1, "CD001\x01EL TORITO SPECIFICATION") != 0)
-		return -1;
-
-	
-	p = buf+0x47;
-	a = p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
-
-	if(sdbio(unit, &unit->part[0], buf, 2048, a*2048) < 0)
-		return -1;
-
-	if(memcmp(buf, "\x01\x00\x00\x00", 4) != 0
-	|| memcmp(buf+30, "\x55\xAA", 2) != 0
-	|| buf[0x20] != 0x88)
-		return -1;
-
-	p = buf+0x28;
-	a = p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
-
-	switch(buf[0x21]){
-	case 0x01:
-		n = 1200*1024;
-		break;
-	case 0x02:
-		n = 1440*1024;
-		break;
-	case 0x03:
-		n = 2880*1024;
-		break;
-	default:
-		return -1;
-	}
-	n /= 2048;
-
-	print("found partition %s!cdboot; %lud+%lud\n", unit->name, a, n);
-	sdaddpart(unit, "cdboot", a, a+n);
-	return 0;
-}
-
-enum {
-	NEW = 1<<0,
-	OLD = 1<<1
-};
-
-void
-partition(SDunit *unit)
-{
-	int type;
-	char *p;
-
-	if(unit->part == 0)
-		return;
-
-	if(part9660(unit) == 0)
-		return;
-
-	p = getconf("partition");
-	if(p == nil)
-		p = defaultpartition;
-
-	if(p != nil && strncmp(p, "new", 3) == 0)
-		type = NEW;
-	else if(p != nil && strncmp(p, "old", 3) == 0)
-		type = OLD;
-	else
-		type = NEW|OLD;
-
-	if(nbuf < unit->secsize) {
-		free(mbrbuf);
-		free(partbuf);
-		mbrbuf = malloc(unit->secsize);
-		partbuf = malloc(unit->secsize);
-		if(mbrbuf==nil || partbuf==nil) {
-			free(mbrbuf);
-			free(partbuf);
-			partbuf = mbrbuf = nil;
-			nbuf = 0;
-			return;
-		}
-		nbuf = unit->secsize;
-	}
-
-	/*
-	 * there might be no mbr (e.g. on a very large device), so look for
-	 * a bare plan 9 partition table if mbrpart fails.
-	 */
-	if((type & NEW) && mbrpart(unit) >= 0){
-		/* nothing to do */
-	}
-	else if (type & NEW)
-		p9part(unit, "data");
-	else if(type & OLD)
-		oldp9part(unit);
-}