From b6e4458e8c01c680b607495f1408b53c38138db0 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 7 Nov 2018 18:00:07 +0100
Subject: [PATCH 33/34] scsi-generic: do not do VPD emulation for sense other
than ILLEGAL_REQUEST
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <20181107180007.22954-10-pbonzini@redhat.com>
Patchwork-id: 82942
O-Subject: [RHEL7.6.z qemu-kvm-rhev PATCH 9/9] scsi-generic: do not do VPD emulation for sense other than ILLEGAL_REQUEST
Bugzilla: 1566195
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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>
(cherry picked from commit 763c56872b08b98fde062a1feca003f200e7bd5c)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
hw/scsi/scsi-generic.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index f218cef..4ac53e4 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -247,7 +247,6 @@ static void scsi_read_complete(void * opaque, int ret)
{
SCSIGenericReq *r = (SCSIGenericReq *)opaque;
SCSIDevice *s = r->req.dev;
- SCSISense sense;
int len;
assert(r->req.aiocb != NULL);
@@ -270,11 +269,14 @@ static void scsi_read_complete(void * opaque, int ret)
* resulted in sense error but would need emulation.
* 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[1] & 0x01) &&
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);
/*
* No need to let scsi_read_complete go on and handle an
--
1.8.3.1