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Use the slice-relative blkno in all parts of the label write

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protection checks.  Using the partition-relative blkno in some
parts broke the write protection for partitions at unusual
offsets (only for partitions at offset 1 on i386's).
This commit is contained in:
Bruce Evans 1998-07-29 08:24:23 +00:00
parent 8d8a81c91e
commit ea0823f2c9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37942
1 changed files with 3 additions and 3 deletions
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6
sys/kern/subr_diskslice.c
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@ -43,7 +43,7 @@
* from: wd.c,v 1.55 1994/10/22 01:57:12 phk Exp $
* from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
* from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $
* $Id: subr_diskslice.c,v 1.52 1998/07/20 14:35:27 bde Exp $
* $Id: subr_diskslice.c,v 1.53 1998/07/28 19:39:09 bde Exp $
*/
#include "opt_devfs.h"
@ -197,7 +197,7 @@ if (labelsect != 0) Debugger("labelsect != 0 in dscheck()");
/* XXX should also protect bootstrap in first 8K */
if (blkno <= LABELSECTOR + labelsect &&
#if LABELSECTOR != 0
bp->b_blkno + sz > LABELSECTOR + labelsect &&
blkno + sz > LABELSECTOR + labelsect &&
#endif
(bp->b_flags & B_READ) == 0 && sp->ds_wlabel == 0) {
bp->b_error = EROFS;
@ -238,7 +238,7 @@ if (labelsect != 0) Debugger("labelsect != 0 in dscheck()");
*/
if (blkno <= LABELSECTOR + labelsect
#if LABELSECTOR != 0
&& bp->b_blkno + sz > LABELSECTOR + labelsect
&& blkno + sz > LABELSECTOR + labelsect
#endif
&& sp->ds_offset != 0) {
struct iodone_chain *ic;