[Xen-devel] [PATCH] qemu-xen-3.4-testing: Fix read-only image file handling

[Michal Novotny <minovotn@xxxxxxxxxx>]

[Well, I did send an e-mail to the list using git but it's not here so 
I'm forwarding the e-mail to the list for sure:]
Hi,
this is the patch for qemu-xen-3.4-testing to fix the read-only
image file handling since the image file was always treated as
read-write which means that all the HVM guests were able to
write to all the disk images available in domain configuration
file no matter what the mode of the image was defined. This
patch fixes this functionality to honor the O_RDONLY in the
BDRV_O_ACCESS flag in block.c and also fixes the IDE and SCSI
interfaces that uses it.

It's been tested on RHEL-5 with xen-3.4-testing version of
upstream xen with xen-3.4-testing qemu implementation.

For SCSI devices the DATA PROTECT request sense has been added
as found at: http://en.wikipedia.org/wiki/SCSI_Request_Sense_Command

Michal

Signed-off-by: Michal Novotny <minovotn@xxxxxxxxxx>

Attachment: xen-qemu-fix-readonly-image-handling.patch
Description: Text Data

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