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/* $OpenBSD: part.c,v 1.8 1998/02/19 20:48:08 deraadt Exp $ */
/*
* Copyright (c) 1997 Tobias Weingartner
* 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 by Tobias Weingartner.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 <err.h>
#include <util.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/disklabel.h>
#include <machine/param.h>
#include "disk.h"
#include "misc.h"
#include "mbr.h"
static struct part_type {
int type;
char *sname;
char *lname;
} part_types[] = {
{ 0x00, "unused ", "unused"},
{ 0x01, "DOS FAT-12 ", "Primary DOS with 12 bit FAT"},
{ 0x02, "XENIX / ", "XENIX / filesystem"},
{ 0x03, "XENIX /usr ", "XENIX /usr filesystem"},
{ 0x04, "DOS FAT-16 ", "Primary DOS with 16 bit FAT"},
{ 0x05, "Extended DOS", "Extended DOS"},
{ 0x06, "DOS > 32MB ", "Primary 'big' DOS (> 32MB)"},
{ 0x07, "HPFS/QNX/AUX", "OS/2 HPFS, QNX or Advanced UNIX"},
{ 0x08, "AIX fs ", "AIX filesystem"},
{ 0x09, "AIX/Coherent", "AIX boot partition or Coherent"},
{ 0x0A, "OS/2 Bootmgr", "OS/2 Boot Manager or OPUS"},
{ 0x0B, "Win95 FAT-32", "Primary Win95 w/ 32-bit FAT"},
{ 0x0E, "DOS FAT-16 ", "Primary DOS w/ 16-bit FAT, CHS-mapped"},
{ 0x10, "OPUS ", "OPUS"},
{ 0x12, "Compaq Diag.", "Compaq Diagnostics"},
{ 0x40, "VENIX 286 ", "VENIX 286"},
{ 0x50, "DM ", "DM"},
{ 0x51, "DM ", "DM"},
{ 0x52, "CP/M or SysV", "CP/M or Microport SysV/AT"},
{ 0x54, "Ontrack ", "Ontrack"},
{ 0x56, "GB ", "GB"},
{ 0x61, "Speed ", "Speed"},
{ 0x63, "ISC, HURD, *", "ISC, System V/386, GNU HURD or Mach"},
{ 0x64, "Netware 2.xx", "Novell Netware 2.xx"},
{ 0x65, "Netware 3.xx", "Novell Netware 3.xx"},
{ 0x75, "PCIX ", "PCIX"},
{ 0x80, "Minix (old) ", "Minix 1.1 ... 1.4a"},
{ 0x81, "Minix (new) ", "Minix 1.4b ... 1.5.10"},
{ 0x82, "Linux swap ", "Linux swap"},
{ 0x83, "Linux files*", "Linux filesystem"},
{ 0x93, "Amoeba file*", "Amoeba filesystem"},
{ 0x94, "Amoeba BBT ", "Amoeba bad block table"},
{ 0xA5, "FreeBSD", "FreeBSD"},
{ 0xA6, "OpenBSD ", "OpenBSD"},
{ 0xA7, "NEXTSTEP ", "NEXTSTEP"},
{ 0xA9, "NetBSD", "NetBSD"},
{ 0xB7, "BSDI filesy*", "BSDI BSD/386 filesystem"},
{ 0xB8, "BSDI swap ", "BSDI BSD/386 swap"},
{ 0xDB, "CPM/C.DOS/C*", "Concurrent CPM or C.DOS or CTOS"},
{ 0xE1, "Speed ", "Speed"},
{ 0xE3, "Speed ", "Speed"},
{ 0xE4, "Speed ", "Speed"},
{ 0xF1, "Speed ", "Speed"},
{ 0xF2, "DOS 3.3+ Sec", "DOS 3.3+ Secondary"},
{ 0xF4, "Speed ", "Speed"},
{ 0xFF, "BBT ", "BBT (Bad Blocks Table)"},
};
void
PRT_printall()
{
int i;
printf("Choose from the following Partition id values:\n");
for (i = 0; i < sizeof(part_types)/sizeof(struct part_type); i++) {
printf("%02X %s%s", part_types[i].type,
part_types[i].sname, (i+1) % 4 ? " " : "\n");
}
if (i % 4)
printf("\n");
}
char *
PRT_ascii_id(id)
int id;
{
static char unknown[] = "<Unknown ID>";
int i;
for (i = 0; i < sizeof(part_types)/sizeof(struct part_type); i++) {
if (part_types[i].type == id)
return (part_types[i].sname);
}
return (unknown);
}
void
PRT_parse(prt, offset, reloff, partn)
void *prt;
off_t offset;
off_t reloff;
prt_t *partn;
{
unsigned char *p = prt;
off_t off;
partn->flag = *p++;
partn->shead = *p++;
partn->ssect = (*p) & 0x3F;
partn->scyl = ((*p << 2) & 0xFF00) | (*(p+1));
p += 2;
partn->id = *p++;
partn->ehead = *p++;
partn->esect = (*p) & 0x3F;
partn->ecyl = ((*p << 2) & 0xFF00) | (*(p+1));
p += 2;
off = partn->id != DOSPTYP_EXTEND ? offset : reloff;
partn->bs = getlong(p) + off;
partn->ns = getlong(p+4);
}
void
PRT_make(partn, offset, reloff, prt)
prt_t *partn;
off_t offset;
off_t reloff;
void *prt;
{
unsigned char *p = prt;
off_t off = partn->id != DOSPTYP_EXTEND ? offset : reloff;
*p++ = partn->flag & 0xFF;
*p++ = partn->shead & 0xFF;
*p++ = (partn->ssect & 0x3F) | ((partn->scyl & 0x300) >> 2);
*p++ = partn->scyl & 0xFF;
*p++ = partn->id & 0xFF;
*p++ = partn->ehead & 0xFF;
*p++ = (partn->esect & 0x3F) | ((partn->ecyl & 0x300) >> 2);
*p++ = partn->ecyl & 0xFF;
putlong(p, partn->bs - off);
putlong(p+4, partn->ns);
}
void
PRT_print(num, partn)
int num;
prt_t *partn;
{
if (partn == NULL) {
printf(" Starting Ending\n");
printf(" #: id cyl hd sec - cyl hd sec [ start - size]\n");
printf("-------------------------------------------------------------------------\n");
} else {
printf("%c%1d: %.2X %4d %3d %3d - %4d %3d %3d [%10d - %10d] %s\n",
(partn->flag == 0x80)?'*':' ',
num, partn->id,
partn->scyl, partn->shead, partn->ssect,
partn->ecyl, partn->ehead, partn->esect,
partn->bs, partn->ns,
PRT_ascii_id(partn->id));
}
}
void
PRT_fix_BN(disk, part)
disk_t *disk;
prt_t *part;
{
int spt, tpc, spc;
int start = 0;
int end = 0;
/* Disk metrics */
spt = disk->real->sectors;
tpc = disk->real->heads;
spc = spt * tpc;
start += part->scyl * spc;
start += part->shead * spt;
start += part->ssect - 1;
end += part->ecyl * spc;
end += part->ehead * spt;
end += part->esect - 1;
/* XXX - Should handle this... */
if (start > end)
warn("Start of partition after end!");
part->bs = start;
part->ns = (end - start) + 1;
}
void
PRT_fix_CHS(disk, part)
disk_t *disk;
prt_t *part;
{
int spt, tpc, spc;
int start, end, size;
int cyl, head, sect;
/* Disk metrics */
spt = disk->real->sectors;
tpc = disk->real->heads;
spc = spt * tpc;
start = part->bs;
size = part->ns;
end = (start + size) - 1;
/* Figure out starting CHS values */
cyl = (start / spc); start -= (cyl * spc);
head = (start / spt); start -= (head * spt);
sect = (start + 1);
part->scyl = cyl;
part->shead = head;
part->ssect = sect;
/* Figure out ending CHS values */
cyl = (end / spc); end -= (cyl * spc);
head = (end / spt); end -= (head * spt);
sect = (end + 1);
part->ecyl = cyl;
part->ehead = head;
part->esect = sect;
}
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