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Make struct buf->b_offset reflect the real byte offset which got

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in via the uio struct. This enables device drivers to use != DEV_BSIZE
blocking on devices with wierd sector/block sizes (ie CDROM's).
This commit is contained in:
Søren Schmidt 1998-08-19 10:50:32 +00:00
parent e10741bfea
commit e620a1cbed
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=38438
4 changed files with 9 additions and 5 deletions
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3
sys/dev/ccd/ccd.c
View file

@ -1,4 +1,4 @@
/* $Id: ccd.c,v 1.34 1998/07/04 20:45:29 julian Exp $ */
/* $Id: ccd.c,v 1.35 1998/07/04 22:30:13 julian Exp $ */
/* $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ */
@ -905,6 +905,7 @@ ccdbuffer(cb, cs, bp, bn, addr, bcount)
cbp->cb_buf.b_proc = bp->b_proc;
cbp->cb_buf.b_dev = ci->ci_dev; /* XXX */
cbp->cb_buf.b_blkno = cbn + cboff + CCD_OFFSET;
cbp->cb_buf.b_offset = dbtob(cbn + cboff + CCD_OFFSET);
cbp->cb_buf.b_data = addr;
cbp->cb_buf.b_vp = ci->ci_vp;
LIST_INIT(&cbp->cb_buf.b_dep);

4
sys/dev/vn/vn.c
View file

@ -38,7 +38,7 @@
* from: Utah Hdr: vn.c 1.13 94/04/02
*
* from: @(#)vn.c 8.6 (Berkeley) 4/1/94
* $Id: vn.c,v 1.66 1998/07/13 08:22:58 julian Exp $
* $Id: vn.c,v 1.67 1998/07/30 15:16:04 bde Exp $
*/
/*
@ -408,6 +408,7 @@ vnstrategy(struct buf *bp)
nbp->b_dev = NODEV;
nbp->b_data = addr;
nbp->b_blkno = nbn + btodb(off);
nbp->b_offset = dbtob(nbn) + off;
nbp->b_proc = bp->b_proc;
nbp->b_iodone = vniodone;
nbp->b_vp = vp;
@ -582,6 +583,7 @@ nvsIOreq(void *private ,struct buf *bp)
nbp->b_dev = NODEV;
nbp->b_data = addr;
nbp->b_blkno = nbn + btodb(off);
nbp->b_offset = dbtob(nbn) + off;
nbp->b_proc = bp->b_proc;
nbp->b_iodone = vniodone;
nbp->b_vp = vp;

3
sys/geom/geom_ccd.c
View file

@ -1,4 +1,4 @@
/* $Id: ccd.c,v 1.34 1998/07/04 20:45:29 julian Exp $ */
/* $Id: ccd.c,v 1.35 1998/07/04 22:30:13 julian Exp $ */
/* $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ */
@ -905,6 +905,7 @@ ccdbuffer(cb, cs, bp, bn, addr, bcount)
cbp->cb_buf.b_proc = bp->b_proc;
cbp->cb_buf.b_dev = ci->ci_dev; /* XXX */
cbp->cb_buf.b_blkno = cbn + cboff + CCD_OFFSET;
cbp->cb_buf.b_offset = dbtob(cbn + cboff + CCD_OFFSET);
cbp->cb_buf.b_data = addr;
cbp->cb_buf.b_vp = ci->ci_vp;
LIST_INIT(&cbp->cb_buf.b_dep);

4
sys/kern/kern_physio.c
View file

@ -16,7 +16,7 @@
* 4. Modifications may be freely made to this file if the above conditions
* are met.
*
* $Id: kern_physio.c,v 1.26 1998/04/04 05:55:05 dyson Exp $
* $Id: kern_physio.c,v 1.27 1998/07/04 22:30:21 julian Exp $
*/
#include <sys/param.h>
@ -93,7 +93,7 @@ physio(strategy, bp, dev, rw, minp, uio)
*/
bp->b_saveaddr = sa;
bp->b_blkno = btodb(uio->uio_offset);
bp->b_offset = uio->uio_offset;
if (uio->uio_segflg == UIO_USERSPACE) {
if (rw && !useracc(bp->b_data, bp->b_bufsize, B_WRITE)) {