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| author |   Bernhard Kohl <bernhard.kohl@nsn.com> | 2010-08-31 14:08:25 +0200 |
|---|---|---|
| committer |   Kevin Wolf <kwolf@redhat.com> | 2010-09-13 14:31:23 +0200 |
| commit | 5aa0e6cb569a4eef1be0073eff3c315a3c7bf049 (patch) | |
| tree | 01bd8257ee5ed2ac57420f22e1c0cc85ba97cb2a | |
| parent | scsi-disk: respect the page control (PC) field in the MODE SENSE command (diff) | |
| download | qemu-kvm-5aa0e6cb569a4eef1be0073eff3c315a3c7bf049.tar.gz qemu-kvm-5aa0e6cb569a4eef1be0073eff3c315a3c7bf049.tar.bz2 qemu-kvm-5aa0e6cb569a4eef1be0073eff3c315a3c7bf049.zip | |
scsi-disk: fix the block descriptor returned by the MODE SENSE command
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 <bernhard.kohl@nsn.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 2488b74081650a5312fe1515660b6cb095244c34)
| -rw-r--r-- | 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 384d19f11..2a107b1bf 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; |