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scsi-generic: do not do VPD emulation for sense other than ILLEGAL_REQUEST

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Pass other sense, such as UNIT_ATTENTION or BUSY, directly to the
guest.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2018-10-23 00:58:21 +02:00
parent 3d4a8bf0ee
commit 763c56872b
1 changed files with 5 additions and 3 deletions
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8
hw/scsi/scsi-generic.c
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@ -246,7 +246,6 @@ static void scsi_read_complete(void * opaque, int ret)
{ {
SCSIGenericReq *r = (SCSIGenericReq *)opaque; SCSIGenericReq *r = (SCSIGenericReq *)opaque;
SCSIDevice *s = r->req.dev; SCSIDevice *s = r->req.dev;
SCSISense sense;
int len; int len;
assert(r->req.aiocb != NULL); assert(r->req.aiocb != NULL);
@ -269,11 +268,14 @@ static void scsi_read_complete(void * opaque, int ret)
* resulted in sense error but would need emulation. * resulted in sense error but would need emulation.
* In this case, emulate a valid VPD response. * In this case, emulate a valid VPD response.
*/ */
if (s->needs_vpd_bl_emulation && if (s->needs_vpd_bl_emulation && ret == 0 &&
(r->io_header.driver_status & SG_ERR_DRIVER_SENSE) &&
r->req.cmd.buf[0] == INQUIRY && r->req.cmd.buf[0] == INQUIRY &&
(r->req.cmd.buf[1] & 0x01) && (r->req.cmd.buf[1] & 0x01) &&
r->req.cmd.buf[2] == 0xb0) { r->req.cmd.buf[2] == 0xb0) {
if (sg_io_sense_from_errno(-ret, &r->io_header, &sense)) { SCSISense sense =
scsi_parse_sense_buf(r->req.sense, r->io_header.sb_len_wr);
if (sense.key == ILLEGAL_REQUEST) {
len = scsi_generic_emulate_block_limits(r, s); len = scsi_generic_emulate_block_limits(r, s);
/* /*
* No need to let scsi_read_complete go on and handle an * No need to let scsi_read_complete go on and handle an