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[Qemu-devel] [STABLE 0.13][PATCH 04/13] scsi-disk: fix the block descrip
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [STABLE 0.13][PATCH 04/13] scsi-disk: fix the block descriptor returned by the MODE SENSE command |
Date: |
Mon, 13 Sep 2010 14:42:42 +0200 |
From: Bernhard Kohl <address@hidden>
The block descriptor contains the number of blocks, not the highest LBA.
Real hard disks return 0 if the number of blocks exceed the maximum 0xFFFFFF.
SCSI-Spec:
http://ldkelley.com/SCSI2/SCSI2/SCSI2-08.html#8.3.3
"The number of blocks field specifies the number of logical blocks on the
medium to which the density code and block length fields apply. A value
of zero indicates that all of the remaining logical blocks of the logical
unit shall have the medium characteristics specified."
Signed-off-by: Bernhard Kohl <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
(cherry picked from commit 2488b74081650a5312fe1515660b6cb095244c34)
---
hw/scsi-disk.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 384d19f..2a107b1 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -661,9 +661,8 @@ static int scsi_disk_emulate_mode_sense(SCSIRequest *req,
uint8_t *outbuf)
outbuf[7] = 8; /* Block descriptor length */
}
nb_sectors /= s->cluster_size;
- nb_sectors--;
if (nb_sectors > 0xffffff)
- nb_sectors = 0xffffff;
+ nb_sectors = 0;
p[0] = 0; /* media density code */
p[1] = (nb_sectors >> 16) & 0xff;
p[2] = (nb_sectors >> 8) & 0xff;
--
1.7.2.2
- [Qemu-devel] [STABLE 0.13][PULL 00/13] Block fixes for stable-0.13, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 01/13] scsi-disk: fix the mode data length field returned by the MODE SENSE command, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 02/13] scsi-disk: fix the mode data header returned by the MODE SENSE(10) command, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 03/13] scsi-disk: respect the page control (PC) field in the MODE SENSE command, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 04/13] scsi-disk: fix the block descriptor returned by the MODE SENSE command,
Kevin Wolf <=
- [Qemu-devel] [STABLE 0.13][PATCH 05/13] scsi-disk: return CHECK CONDITION for unknown page codes in the MODE SENSE command, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 07/13] raw-posix: Don't use file name for host_cdrom detection on Linux, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 06/13] scsi-disk: fix the check of the DBD bit in the MODE SENSE command, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 08/13] qemu-img convert: Use cache=unsafe for output image, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 09/13] block: Fix BDRV_O_CACHE_MASK, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 10/13] qcow2: Remove unnecessary flush after L2 write, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 11/13] vvfat: Fix segfault on write to read-only disk, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 12/13] vvfat: Fix double free for opening the image rw, Kevin Wolf, 2010/09/13
- [Qemu-devel] [STABLE 0.13][PATCH 13/13] vvfat: Use cache=unsafe, Kevin Wolf, 2010/09/13