These are same between arm32 & arm26.
This commit is contained in:
matt
parent
6755bfc8c1
commit
79efd2285e
|
|
@ -0,0 +1,439 @@
|
|||
/* $NetBSD: disksubr.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
|
||||
* for the NetBSD Project.
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
|
||||
* Copyright (c) 1995 Mark Brinicombe
|
||||
* 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 the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
||||
*
|
||||
* from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/buf.h>
|
||||
#include <sys/dkbad.h>
|
||||
#include <sys/disklabel.h>
|
||||
#include <sys/syslog.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/disk.h>
|
||||
|
||||
/*
|
||||
* Attempt to read a disk label from a device
|
||||
* using the indicated stategy routine.
|
||||
* The label must be partly set up before this:
|
||||
* secpercyl, secsize and anything required for a block i/o read
|
||||
* operation in the driver's strategy/start routines
|
||||
* must be filled in before calling us.
|
||||
*
|
||||
* If dos partition table requested, attempt to load it and
|
||||
* find disklabel inside a DOS partition. Also, if bad block
|
||||
* table needed, attempt to extract it as well. Return buffer
|
||||
* for use in signalling errors if requested.
|
||||
*
|
||||
* Returns null on success and an error string on failure.
|
||||
*/
|
||||
|
||||
char *
|
||||
readdisklabel(dev, strat, lp, osdep)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
{
|
||||
struct buf *bp;
|
||||
struct disklabel *dlp;
|
||||
char *msg = NULL;
|
||||
int cyl, netbsdpartoff, i;
|
||||
|
||||
/* printf("Reading disclabel for %04x\n", dev);*/
|
||||
|
||||
/* minimal requirements for archtypal disk label */
|
||||
|
||||
if (lp->d_secsize == 0)
|
||||
lp->d_secsize = DEV_BSIZE;
|
||||
|
||||
if (lp->d_secperunit == 0)
|
||||
lp->d_secperunit = 0x1fffffff;
|
||||
|
||||
lp->d_npartitions = MAXPARTITIONS;
|
||||
for (i = 0; i < MAXPARTITIONS; i++) {
|
||||
if (i == RAW_PART) continue;
|
||||
lp->d_partitions[i].p_offset = 0;
|
||||
lp->d_partitions[i].p_fstype = FS_UNUSED;
|
||||
lp->d_partitions[i].p_size = 0;
|
||||
}
|
||||
|
||||
if (lp->d_partitions[RAW_PART].p_size == 0) {
|
||||
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
|
||||
lp->d_partitions[RAW_PART].p_offset = 0;
|
||||
lp->d_partitions[RAW_PART].p_size = 0x1fffffff;
|
||||
}
|
||||
|
||||
/* obtain buffer to probe drive with */
|
||||
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
|
||||
/* request no partition relocation by driver on I/O operations */
|
||||
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* do netbsd partitions in the process of getting disklabel? */
|
||||
|
||||
netbsdpartoff = 0;
|
||||
cyl = LABELSECTOR / lp->d_secpercyl;
|
||||
|
||||
if (osdep) {
|
||||
if (filecore_label_read(dev, strat,lp, osdep, &msg, &cyl,
|
||||
&netbsdpartoff) ||
|
||||
mbr_label_read(dev, strat, lp, osdep, &msg, &cyl,
|
||||
&netbsdpartoff)) {
|
||||
if (msg != NULL)
|
||||
goto done;
|
||||
} else {
|
||||
/*
|
||||
* We didn't find anything we like; NetBSD native.
|
||||
* netbsdpartoff and cyl should be unchanged.
|
||||
*/
|
||||
KASSERT(netbsdpartoff == 0);
|
||||
KASSERT(cyl == (LABELSECTOR / lp->d_secpercyl));
|
||||
}
|
||||
}
|
||||
|
||||
/* next, dig out disk label */
|
||||
|
||||
/* printf("Reading disklabel addr=%08x\n", netbsdpartoff * DEV_BSIZE);*/
|
||||
|
||||
bp->b_blkno = netbsdpartoff + LABELSECTOR;
|
||||
bp->b_cylinder = bp->b_blkno / lp->d_secpercyl;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags |= B_READ;
|
||||
(*strat)(bp);
|
||||
|
||||
/* if successful, locate disk label within block and validate */
|
||||
|
||||
if (biowait(bp)) {
|
||||
msg = "disk label I/O error";
|
||||
goto done;
|
||||
}
|
||||
for (dlp = (struct disklabel *)bp->b_data;
|
||||
dlp <= (struct disklabel *)(bp->b_data + lp->d_secsize - sizeof(*dlp));
|
||||
dlp = (struct disklabel *)((char *)dlp + sizeof(long))) {
|
||||
if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) {
|
||||
if (msg == NULL)
|
||||
msg = "no disk label";
|
||||
} else if (dlp->d_npartitions > MAXPARTITIONS ||
|
||||
dkcksum(dlp) != 0)
|
||||
msg = "disk label corrupted";
|
||||
else {
|
||||
*lp = *dlp;
|
||||
msg = NULL;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (msg)
|
||||
goto done;
|
||||
|
||||
/* obtain bad sector table if requested and present */
|
||||
if (osdep && (lp->d_flags & D_BADSECT)) {
|
||||
struct dkbad *bdp = &osdep->bad;
|
||||
struct dkbad *db;
|
||||
|
||||
i = 0;
|
||||
do {
|
||||
/* read a bad sector table */
|
||||
bp->b_flags &= ~(B_DONE);
|
||||
bp->b_flags |= B_READ;
|
||||
bp->b_blkno = lp->d_secperunit - lp->d_nsectors + i;
|
||||
if (lp->d_secsize > DEV_BSIZE)
|
||||
bp->b_blkno *= lp->d_secsize / DEV_BSIZE;
|
||||
else
|
||||
bp->b_blkno /= DEV_BSIZE / lp->d_secsize;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_cylinder = lp->d_ncylinders - 1;
|
||||
(*strat)(bp);
|
||||
|
||||
/* if successful, validate, otherwise try another */
|
||||
if (biowait(bp)) {
|
||||
msg = "bad sector table I/O error";
|
||||
} else {
|
||||
db = (struct dkbad *)(bp->b_data);
|
||||
#define DKBAD_MAGIC 0x4321
|
||||
if (db->bt_mbz == 0
|
||||
&& db->bt_flag == DKBAD_MAGIC) {
|
||||
msg = NULL;
|
||||
*bdp = *db;
|
||||
break;
|
||||
} else
|
||||
msg = "bad sector table corrupted";
|
||||
}
|
||||
} while ((bp->b_flags & B_ERROR) && (i += 2) < 10 &&
|
||||
i < lp->d_nsectors);
|
||||
}
|
||||
|
||||
done:
|
||||
brelse(bp);
|
||||
return (msg);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Check new disk label for sensibility
|
||||
* before setting it.
|
||||
*/
|
||||
|
||||
int
|
||||
setdisklabel(olp, nlp, openmask, osdep)
|
||||
struct disklabel *olp;
|
||||
struct disklabel *nlp;
|
||||
u_long openmask;
|
||||
struct cpu_disklabel *osdep;
|
||||
{
|
||||
int i;
|
||||
struct partition *opp, *npp;
|
||||
|
||||
/* sanity clause */
|
||||
|
||||
if (nlp->d_secpercyl == 0 || nlp->d_secsize == 0
|
||||
|| (nlp->d_secsize % DEV_BSIZE) != 0)
|
||||
return(EINVAL);
|
||||
|
||||
/* special case to allow disklabel to be invalidated */
|
||||
|
||||
if (nlp->d_magic == 0xffffffff) {
|
||||
*olp = *nlp;
|
||||
return (0);
|
||||
}
|
||||
|
||||
if (nlp->d_magic != DISKMAGIC || nlp->d_magic2 != DISKMAGIC
|
||||
|| dkcksum(nlp) != 0)
|
||||
return (EINVAL);
|
||||
|
||||
/* XXX missing check if other acorn/dos partitions will be overwritten */
|
||||
|
||||
while (openmask != 0) {
|
||||
i = ffs(openmask) - 1;
|
||||
openmask &= ~(1 << i);
|
||||
if (nlp->d_npartitions <= i)
|
||||
return (EBUSY);
|
||||
opp = &olp->d_partitions[i];
|
||||
npp = &nlp->d_partitions[i];
|
||||
if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size)
|
||||
return (EBUSY);
|
||||
/*
|
||||
* Copy internally-set partition information
|
||||
* if new label doesn't include it. XXX
|
||||
*/
|
||||
if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) {
|
||||
npp->p_fstype = opp->p_fstype;
|
||||
npp->p_fsize = opp->p_fsize;
|
||||
npp->p_frag = opp->p_frag;
|
||||
npp->p_cpg = opp->p_cpg;
|
||||
}
|
||||
}
|
||||
|
||||
nlp->d_checksum = 0;
|
||||
nlp->d_checksum = dkcksum(nlp);
|
||||
*olp = *nlp;
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Write disk label back to device after modification.
|
||||
*/
|
||||
|
||||
int
|
||||
writedisklabel(dev, strat, lp, osdep)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
{
|
||||
struct buf *bp;
|
||||
struct disklabel *dlp;
|
||||
int cyl, netbsdpartoff;
|
||||
int error = 0, rv;
|
||||
|
||||
/* get a buffer and initialize it */
|
||||
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* do netbsd partitions in the process of getting disklabel? */
|
||||
|
||||
netbsdpartoff = 0;
|
||||
cyl = LABELSECTOR / lp->d_secpercyl;
|
||||
|
||||
if (osdep) {
|
||||
if ((rv = filecore_label_locate(dev, strat,lp, osdep, &cyl,
|
||||
&netbsdpartoff)) != 0||
|
||||
(rv = mbr_label_locate(dev, strat, lp, osdep, &cyl,
|
||||
&netbsdpartoff)) != 0) {
|
||||
if (rv < 0) {
|
||||
error = -rv;
|
||||
goto done;
|
||||
}
|
||||
} else {
|
||||
/*
|
||||
* We didn't find anything we like; NetBSD native.
|
||||
* netbsdpartoff and cyl should be unchanged.
|
||||
*/
|
||||
KASSERT(netbsdpartoff == 0);
|
||||
KASSERT(cyl == (LABELSECTOR / lp->d_secpercyl));
|
||||
}
|
||||
}
|
||||
|
||||
/* writelabel: */
|
||||
|
||||
/* printf("writedisklabel: Reading disklabel addr=%08x\n",
|
||||
netbsdpartoff * DEV_BSIZE);*/
|
||||
|
||||
/* next, dig out disk label */
|
||||
|
||||
bp->b_blkno = netbsdpartoff + LABELSECTOR;
|
||||
bp->b_cylinder = cyl;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags &= ~(B_DONE);
|
||||
bp->b_flags |= B_READ;
|
||||
(*strat)(bp);
|
||||
|
||||
/* if successful, locate disk label within block and validate */
|
||||
|
||||
if ((error = biowait(bp)))
|
||||
goto done;
|
||||
for (dlp = (struct disklabel *)bp->b_data;
|
||||
dlp <= (struct disklabel *)(bp->b_data + lp->d_secsize - sizeof(*dlp));
|
||||
dlp = (struct disklabel *)((char *)dlp + sizeof(long))) {
|
||||
if (dlp->d_magic == DISKMAGIC && dlp->d_magic2 == DISKMAGIC &&
|
||||
dkcksum(dlp) == 0) {
|
||||
*dlp = *lp;
|
||||
bp->b_flags &= ~(B_READ|B_DONE);
|
||||
bp->b_flags |= B_WRITE;
|
||||
(*strat)(bp);
|
||||
error = biowait(bp);
|
||||
goto done;
|
||||
}
|
||||
}
|
||||
|
||||
error = ESRCH;
|
||||
|
||||
done:
|
||||
brelse(bp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Determine the size of the transfer, and make sure it is
|
||||
* within the boundaries of the partition. Adjust transfer
|
||||
* if needed, and signal errors or early completion.
|
||||
*/
|
||||
int
|
||||
bounds_check_with_label(bp, lp, wlabel)
|
||||
struct buf *bp;
|
||||
struct disklabel *lp;
|
||||
int wlabel;
|
||||
{
|
||||
struct partition *p = lp->d_partitions + DISKPART(bp->b_dev);
|
||||
int labelsector = lp->d_partitions[0].p_offset + LABELSECTOR;
|
||||
int sz;
|
||||
|
||||
sz = howmany(bp->b_bcount, lp->d_secsize);
|
||||
|
||||
if (bp->b_blkno + sz > p->p_size) {
|
||||
sz = p->p_size - bp->b_blkno;
|
||||
if (sz == 0) {
|
||||
/* If exactly at end of disk, return EOF. */
|
||||
bp->b_resid = bp->b_bcount;
|
||||
goto done;
|
||||
}
|
||||
if (sz < 0) {
|
||||
/* If past end of disk, return EINVAL. */
|
||||
bp->b_error = EINVAL;
|
||||
goto bad;
|
||||
}
|
||||
/* Otherwise, truncate request. */
|
||||
bp->b_bcount = sz << DEV_BSHIFT;
|
||||
}
|
||||
|
||||
/* Overwriting disk label? */
|
||||
if (bp->b_blkno + p->p_offset <= labelsector &&
|
||||
#if LABELSECTOR != 0
|
||||
bp->b_blkno + p->p_offset + sz > labelsector &&
|
||||
#endif
|
||||
(bp->b_flags & B_READ) == 0 && !wlabel) {
|
||||
bp->b_error = EROFS;
|
||||
goto bad;
|
||||
}
|
||||
|
||||
/* calculate cylinder for disksort to order transfers with */
|
||||
bp->b_cylinder = (bp->b_blkno + p->p_offset) /
|
||||
(lp->d_secsize / DEV_BSIZE) / lp->d_secpercyl;
|
||||
return (1);
|
||||
|
||||
bad:
|
||||
bp->b_flags |= B_ERROR;
|
||||
done:
|
||||
return (0);
|
||||
}
|
||||
|
||||
/* End of disksubr.c */
|
||||
|
|
@ -0,0 +1,358 @@
|
|||
/* $NetBSD: disksubr_acorn.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
|
||||
* for the NetBSD Project.
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
|
||||
* Copyright (c) 1995 Mark Brinicombe
|
||||
* 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 the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
||||
*
|
||||
* from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/buf.h>
|
||||
#include <sys/disklabel.h>
|
||||
|
||||
static int filecore_checksum __P((u_char *));
|
||||
|
||||
/*
|
||||
* static int filecore_checksum(u_char *bootblock)
|
||||
*
|
||||
* Calculates the filecore boot block checksum. This is used to validate
|
||||
* a filecore boot block on the disk. If a boot block is validated then
|
||||
* it is used to locate the partition table. If the boot block is not
|
||||
* validated, it is assumed that the whole disk is NetBSD.
|
||||
*
|
||||
* The basic algorithm is:
|
||||
*
|
||||
* for (each byte in block, excluding checksum) {
|
||||
* sum += byte;
|
||||
* if (sum > 255)
|
||||
* sum -= 255;
|
||||
* }
|
||||
*
|
||||
* That's equivalent to summing all of the bytes in the block
|
||||
* (excluding the checksum byte, of course), then calculating the
|
||||
* checksum as "cksum = sum - ((sum - 1) / 255) * 255)". That
|
||||
* expression may or may not yield a faster checksum function,
|
||||
* but it's easier to reason about.
|
||||
*
|
||||
* Note that if you have a block filled with bytes of a single
|
||||
* value "X" (regardless of that value!) and calculate the cksum
|
||||
* of the block (excluding the checksum byte), you will _always_
|
||||
* end up with a checksum of X. (Do the math; that can be derived
|
||||
* from the checksum calculation function!) That means that
|
||||
* blocks which contain bytes which all have the same value will
|
||||
* always checksum properly. That's a _very_ unlikely occurence
|
||||
* (probably impossible, actually) for a valid filecore boot block,
|
||||
* so we treat such blocks as invalid.
|
||||
*/
|
||||
static int
|
||||
filecore_checksum(bootblock)
|
||||
u_char *bootblock;
|
||||
{
|
||||
u_char byte0, accum_diff;
|
||||
u_int sum;
|
||||
int i;
|
||||
|
||||
sum = 0;
|
||||
accum_diff = 0;
|
||||
byte0 = bootblock[0];
|
||||
|
||||
/*
|
||||
* Sum the contents of the block, keeping track of whether
|
||||
* or not all bytes are the same. If 'accum_diff' ends up
|
||||
* being zero, all of the bytes are, in fact, the same.
|
||||
*/
|
||||
for (i = 0; i < 511; ++i) {
|
||||
sum += bootblock[i];
|
||||
accum_diff |= bootblock[i] ^ byte0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check to see if the checksum byte is the same as the
|
||||
* rest of the bytes, too. (Note that if all of the bytes
|
||||
* are the same except the checksum, a checksum compare
|
||||
* won't succeed, but that's not our problem.)
|
||||
*/
|
||||
accum_diff |= bootblock[i] ^ byte0;
|
||||
|
||||
/* All bytes in block are the same; call it invalid. */
|
||||
if (accum_diff == 0)
|
||||
return (-1);
|
||||
|
||||
return (sum - ((sum - 1) / 255) * 255);
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
filecore_label_read(dev, strat, lp, osdep, msgp, cylp, netbsd_label_offp)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
char **msgp;
|
||||
int *cylp, *netbsd_label_offp;
|
||||
{
|
||||
struct filecore_bootblock *bb;
|
||||
int heads;
|
||||
int sectors;
|
||||
int rv = 1;
|
||||
int cyl, netbsdpartoff;
|
||||
struct buf *bp;
|
||||
|
||||
#ifdef __GNUC__
|
||||
netbsdpartoff = 0; /* XXX -Wuninitialized */
|
||||
#endif
|
||||
|
||||
/* get a buffer and initialize it */
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* read the Acorn filecore boot block */
|
||||
|
||||
bp->b_blkno = FILECORE_BOOT_SECTOR;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags |= B_READ;
|
||||
bp->b_cylinder = bp->b_blkno / lp->d_secpercyl;
|
||||
(*strat)(bp);
|
||||
|
||||
/*
|
||||
* if successful, validate boot block and
|
||||
* locate partition table
|
||||
*/
|
||||
|
||||
if (biowait(bp)) {
|
||||
*msgp = "filecore boot block I/O error";
|
||||
goto out;
|
||||
}
|
||||
|
||||
bb = (struct filecore_bootblock *)bp->b_data;
|
||||
|
||||
/* Validate boot block */
|
||||
|
||||
if (bb->checksum != filecore_checksum((u_char *)bb)) {
|
||||
/*
|
||||
* Invalid boot block so lets assume the
|
||||
* entire disc is NetBSD
|
||||
*/
|
||||
rv = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Get some information from the boot block */
|
||||
|
||||
cyl = bb->partition_cyl_low + (bb->partition_cyl_high << 8);
|
||||
|
||||
heads = bb->heads;
|
||||
sectors = bb->secspertrack;
|
||||
|
||||
/* Do we have a NETBSD partition table ? */
|
||||
|
||||
if (bb->partition_type == PARTITION_FORMAT_RISCBSD) {
|
||||
/* printf("heads = %d nsectors = %d\n", heads, sectors);*/
|
||||
netbsdpartoff = cyl * heads * sectors;
|
||||
} else if (bb->partition_type == PARTITION_FORMAT_RISCIX) {
|
||||
struct riscix_partition_table *rpt;
|
||||
int loop;
|
||||
|
||||
/*
|
||||
* We have a RISCiX partition table :-( groan
|
||||
*
|
||||
* Read the RISCiX partition table and see if
|
||||
* there is a NetBSD partition
|
||||
*/
|
||||
|
||||
bp->b_blkno = cyl * heads * sectors;
|
||||
/* printf("Found RiscIX partition table @ %08x\n",
|
||||
bp->b_blkno);*/
|
||||
bp->b_cylinder = bp->b_blkno / lp->d_secpercyl;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags &= ~(B_DONE);
|
||||
bp->b_flags |= B_READ;
|
||||
(*strat)(bp);
|
||||
|
||||
/*
|
||||
* if successful, locate disk label within block
|
||||
* and validate
|
||||
*/
|
||||
|
||||
if (biowait(bp)) {
|
||||
*msgp = "disk label I/O error";
|
||||
goto out;
|
||||
}
|
||||
|
||||
rpt = (struct riscix_partition_table *)bp->b_data;
|
||||
/* for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop)
|
||||
printf("p%d: %16s %08x %08x %08x\n", loop,
|
||||
rpt->partitions[loop].rp_name,
|
||||
rpt->partitions[loop].rp_start,
|
||||
rpt->partitions[loop].rp_length,
|
||||
rpt->partitions[loop].rp_type);
|
||||
*/
|
||||
for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) {
|
||||
if (strcmp(rpt->partitions[loop].rp_name,
|
||||
"RiscBSD") == 0 ||
|
||||
strcmp(rpt->partitions[loop].rp_name,
|
||||
"NetBSD") == 0 ||
|
||||
strcmp(rpt->partitions[loop].rp_name,
|
||||
"Empty:") == 0) {
|
||||
netbsdpartoff =
|
||||
rpt->partitions[loop].rp_start;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (loop == NRISCIX_PARTITIONS) {
|
||||
*msgp = "NetBSD partition identifier string not found.";
|
||||
goto out;
|
||||
}
|
||||
} else {
|
||||
*msgp = "Invalid partition format";
|
||||
goto out;
|
||||
}
|
||||
|
||||
*cylp = cyl;
|
||||
*netbsd_label_offp = netbsdpartoff;
|
||||
*msgp = NULL;
|
||||
out:
|
||||
brelse(bp);
|
||||
return (rv);
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
filecore_label_locate(dev, strat, lp, osdep, cylp, netbsd_label_offp)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
int *cylp, *netbsd_label_offp;
|
||||
{
|
||||
struct filecore_bootblock *bb;
|
||||
int heads;
|
||||
int sectors;
|
||||
int rv;
|
||||
int cyl, netbsdpartoff;
|
||||
struct buf *bp;
|
||||
|
||||
/* get a buffer and initialize it */
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* read the filecore boot block */
|
||||
|
||||
/* printf("writedisklabel: Reading boot block\n");*/
|
||||
|
||||
bp->b_blkno = FILECORE_BOOT_SECTOR;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags |= B_READ;
|
||||
bp->b_cylinder = bp->b_blkno / lp->d_secpercyl;
|
||||
(*strat)(bp);
|
||||
|
||||
/*
|
||||
* if successful, validate boot block and locate
|
||||
* partition table
|
||||
*/
|
||||
|
||||
if ((rv = biowait(bp)) != 0) {
|
||||
rv = -rv;
|
||||
goto out;
|
||||
}
|
||||
|
||||
bb = (struct filecore_bootblock *)bp->b_data;
|
||||
rv = 1;
|
||||
|
||||
/* Validate boot block */
|
||||
|
||||
if (bb->checksum != filecore_checksum((u_char *)bb)) {
|
||||
/*
|
||||
* Invalid boot block so lets assume the
|
||||
* entire disc is NetBSD
|
||||
*/
|
||||
|
||||
/* printf("writedisklabel: Invalid filecore boot block (incorrect checksum)\n");*/
|
||||
rv = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Do we have a NetBSD partition ? */
|
||||
|
||||
if (bb->partition_type != PARTITION_FORMAT_RISCBSD) {
|
||||
printf("writedisklabel: Invalid partition format\n");
|
||||
rv = -1;
|
||||
goto out;
|
||||
}
|
||||
|
||||
cyl = bb->partition_cyl_low + (bb->partition_cyl_high << 8);
|
||||
|
||||
heads = bb->heads;
|
||||
sectors = bb->secspertrack;
|
||||
|
||||
/*printf("heads = %d nsectors = %d\n", heads, sectors);*/
|
||||
|
||||
netbsdpartoff = cyl * heads * sectors;
|
||||
|
||||
*cylp = cyl;
|
||||
*netbsd_label_offp = netbsdpartoff;
|
||||
out:
|
||||
brelse(bp);
|
||||
return (rv);
|
||||
}
|
||||
|
|
@ -0,0 +1,276 @@
|
|||
/* $NetBSD: disksubr_mbr.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
|
||||
* for the NetBSD Project.
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
|
||||
* 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 the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
||||
*
|
||||
* @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
|
||||
*/
|
||||
|
||||
/*
|
||||
* From i386 disklabel.c rev 1.29, with cleanups and modifications to
|
||||
* make it easier to use on the arm32 and to use as MI code (not quite
|
||||
* clean enough, yet).
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/buf.h>
|
||||
#include <sys/disklabel.h>
|
||||
|
||||
#include "opt_mbr.h"
|
||||
|
||||
#define MBRSIGOFS 0x1fe
|
||||
static char mbrsig[2] = {0x55, 0xaa};
|
||||
|
||||
int fat_types[] = {
|
||||
MBR_PTYPE_FAT12, MBR_PTYPE_FAT16S,
|
||||
MBR_PTYPE_FAT16B, MBR_PTYPE_FAT32,
|
||||
MBR_PTYPE_FAT32L, MBR_PTYPE_FAT16L,
|
||||
-1
|
||||
};
|
||||
|
||||
int
|
||||
mbr_label_read(dev, strat, lp, osdep, msgp, cylp, netbsd_label_offp)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
char **msgp;
|
||||
int *cylp, *netbsd_label_offp;
|
||||
{
|
||||
struct mbr_partition *mbrp;
|
||||
struct partition *pp;
|
||||
int cyl, mbrpartoff, i, *ip;
|
||||
struct buf *bp;
|
||||
int rv = 1;
|
||||
|
||||
/* get a buffer and initialize it */
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* In case nothing sets them */
|
||||
mbrpartoff = 0;
|
||||
cyl = LABELSECTOR / lp->d_secpercyl;
|
||||
|
||||
mbrp = osdep->mbrparts;
|
||||
|
||||
/* read master boot record */
|
||||
bp->b_blkno = MBR_BBSECTOR;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags |= B_READ;
|
||||
bp->b_cylinder = MBR_BBSECTOR / lp->d_secpercyl;
|
||||
(*strat)(bp);
|
||||
|
||||
/* if successful, wander through dos partition table */
|
||||
if (biowait(bp)) {
|
||||
*msgp = "dos partition I/O error";
|
||||
goto out;
|
||||
} else {
|
||||
struct mbr_partition *ourmbrp = NULL;
|
||||
|
||||
/* XXX "there has to be a better check than this." */
|
||||
if (bcmp(bp->b_data + MBRSIGOFS, mbrsig, sizeof(mbrsig))) {
|
||||
rv = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* XXX how do we check veracity/bounds of this? */
|
||||
bcopy(bp->b_data + MBR_PARTOFF, mbrp,
|
||||
NMBRPART * sizeof(*mbrp));
|
||||
|
||||
/* look for NetBSD partition */
|
||||
ourmbrp = NULL;
|
||||
for (i = 0; !ourmbrp && i < NMBRPART; i++) {
|
||||
if (mbrp[i].mbrp_typ == MBR_PTYPE_NETBSD)
|
||||
ourmbrp = &mbrp[i];
|
||||
}
|
||||
#ifdef COMPAT_386BSD_MBRPART
|
||||
/* didn't find it -- look for 386BSD partition */
|
||||
for (i = 0; !ourmbrp && i < NMBRPART; i++) {
|
||||
if (mbrp[i].mbrp_typ == MBR_PTYPE_386BSD) {
|
||||
printf("WARNING: old BSD partition ID!\n");
|
||||
ourmbrp = &mbrp[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
for (i = 0; i < NMBRPART; i++, mbrp++) {
|
||||
|
||||
strncpy(lp->d_packname, "fictitious-MBR",
|
||||
sizeof lp->d_packname);
|
||||
|
||||
/* Install in partition e, f, g, or h. */
|
||||
pp = &lp->d_partitions['e' - 'a' + i];
|
||||
pp->p_offset = mbrp->mbrp_start;
|
||||
pp->p_size = mbrp->mbrp_size;
|
||||
for (ip = fat_types; *ip != -1; ip++) {
|
||||
if (mbrp->mbrp_typ == *ip)
|
||||
pp->p_fstype = FS_MSDOS;
|
||||
}
|
||||
if (mbrp->mbrp_typ == MBR_PTYPE_LNXEXT2)
|
||||
pp->p_fstype = FS_EX2FS;
|
||||
|
||||
/* is this ours? */
|
||||
if (mbrp == ourmbrp) {
|
||||
/* need sector address for SCSI/IDE,
|
||||
cylinder for ESDI/ST506/RLL */
|
||||
mbrpartoff = mbrp->mbrp_start;
|
||||
cyl = MBR_PCYL(mbrp->mbrp_scyl, mbrp->mbrp_ssect);
|
||||
|
||||
#ifdef __i386__ /* XXX? */
|
||||
/* update disklabel with details */
|
||||
lp->d_partitions[2].p_size =
|
||||
mbrp->mbrp_size;
|
||||
lp->d_partitions[2].p_offset =
|
||||
mbrp->mbrp_start;
|
||||
lp->d_ntracks = mbrp->mbrp_ehd + 1;
|
||||
lp->d_nsectors = MBR_PSECT(mbrp->mbrp_esect);
|
||||
lp->d_secpercyl =
|
||||
lp->d_ntracks * lp->d_nsectors;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
lp->d_npartitions = 'e' - 'a' + i;
|
||||
}
|
||||
|
||||
*cylp = cyl;
|
||||
*netbsd_label_offp = mbrpartoff;
|
||||
*msgp = NULL;
|
||||
out:
|
||||
brelse(bp);
|
||||
return (rv);
|
||||
}
|
||||
|
||||
int
|
||||
mbr_label_locate(dev, strat, lp, osdep, cylp, netbsd_label_offp)
|
||||
dev_t dev;
|
||||
void (*strat) __P((struct buf *));
|
||||
struct disklabel *lp;
|
||||
struct cpu_disklabel *osdep;
|
||||
int *cylp, *netbsd_label_offp;
|
||||
{
|
||||
struct mbr_partition *mbrp;
|
||||
int cyl, mbrpartoff, i;
|
||||
struct mbr_partition *ourmbrp = NULL;
|
||||
struct buf *bp;
|
||||
int rv = 1;
|
||||
|
||||
/* get a buffer and initialize it */
|
||||
bp = geteblk((int)lp->d_secsize);
|
||||
bp->b_dev = dev;
|
||||
|
||||
/* do MBR partitions in the process of getting disklabel? */
|
||||
mbrpartoff = 0;
|
||||
cyl = LABELSECTOR / lp->d_secpercyl;
|
||||
|
||||
mbrp = osdep->mbrparts;
|
||||
|
||||
/* read master boot record */
|
||||
bp->b_blkno = MBR_BBSECTOR;
|
||||
bp->b_bcount = lp->d_secsize;
|
||||
bp->b_flags |= B_READ;
|
||||
bp->b_cylinder = MBR_BBSECTOR / lp->d_secpercyl;
|
||||
(*strat)(bp);
|
||||
|
||||
if ((rv = biowait(bp)) != 0) {
|
||||
rv = -rv;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (bcmp(bp->b_data + MBRSIGOFS, mbrsig, sizeof(mbrsig))) {
|
||||
rv = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* XXX how do we check veracity/bounds of this? */
|
||||
bcopy(bp->b_data + MBR_PARTOFF, mbrp, NMBRPART * sizeof(*mbrp));
|
||||
|
||||
/* look for NetBSD partition */
|
||||
ourmbrp = NULL;
|
||||
for (i = 0; !ourmbrp && i < NMBRPART; i++) {
|
||||
if (mbrp[i].mbrp_typ == MBR_PTYPE_NETBSD)
|
||||
ourmbrp = &mbrp[i];
|
||||
}
|
||||
#ifdef COMPAT_386BSD_MBRPART
|
||||
/* didn't find it -- look for 386BSD partition */
|
||||
for (i = 0; !ourmbrp && i < NMBRPART; i++) {
|
||||
if (mbrp[i].mbrp_typ == MBR_PTYPE_386BSD) {
|
||||
printf("WARNING: old BSD partition ID!\n");
|
||||
ourmbrp = &mbrp[i];
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (!ourmbrp) {
|
||||
rv = 0; /* XXX allow easy clobber? */
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* need sector address for SCSI/IDE, cylinder for ESDI/ST506/RLL */
|
||||
mbrpartoff = ourmbrp->mbrp_start;
|
||||
cyl = MBR_PCYL(ourmbrp->mbrp_scyl, ourmbrp->mbrp_ssect);
|
||||
|
||||
*cylp = cyl;
|
||||
*netbsd_label_offp = mbrpartoff;
|
||||
out:
|
||||
brelse(bp);
|
||||
return (rv);
|
||||
}
|
||||
Loading…
Reference in New Issue