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From d186ce91950c1cd0d1ba354daca53a072390fb53 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Thu, 20 Dec 2018 12:31:03 +0000
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Subject: [PATCH 8/8] scsi-generic: do not do VPD emulation for sense other
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than ILLEGAL_REQUEST
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <20181220123103.29579-9-pbonzini@redhat.com>
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Patchwork-id: 83716
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O-Subject: [PATCH 8/8] scsi-generic: do not do VPD emulation for sense other than ILLEGAL_REQUEST
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Bugzilla: 1639957
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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Pass other sense, such as UNIT_ATTENTION or BUSY, directly to the
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guest.
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Reported-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 763c56872b08b98fde062a1feca003f200e7bd5c)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/scsi/scsi-generic.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
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index f218cef..4ac53e4 100644
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--- a/hw/scsi/scsi-generic.c
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+++ b/hw/scsi/scsi-generic.c
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@@ -247,7 +247,6 @@ static void scsi_read_complete(void * opaque, int ret)
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{
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SCSIGenericReq *r = (SCSIGenericReq *)opaque;
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SCSIDevice *s = r->req.dev;
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- SCSISense sense;
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int len;
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assert(r->req.aiocb != NULL);
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@@ -270,11 +269,14 @@ static void scsi_read_complete(void * opaque, int ret)
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* resulted in sense error but would need emulation.
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* In this case, emulate a valid VPD response.
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*/
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- if (s->needs_vpd_bl_emulation &&
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+ if (s->needs_vpd_bl_emulation && ret == 0 &&
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+ (r->io_header.driver_status & SG_ERR_DRIVER_SENSE) &&
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r->req.cmd.buf[0] == INQUIRY &&
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(r->req.cmd.buf[1] & 0x01) &&
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r->req.cmd.buf[2] == 0xb0) {
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- if (sg_io_sense_from_errno(-ret, &r->io_header, &sense)) {
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+ SCSISense sense =
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+ scsi_parse_sense_buf(r->req.sense, r->io_header.sb_len_wr);
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+ if (sense.key == ILLEGAL_REQUEST) {
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len = scsi_generic_emulate_block_limits(r, s);
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/*
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* No need to let scsi_read_complete go on and handle an
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--
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1.8.3.1
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