From b2e6b34cedd32864edaa28dd7b7f8a8bf9578569 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Mon, 29 Jan 2018 05:38:19 +0100
Subject: [PATCH 7/8] usb-storage: Fix share-rw option parsing

RH-Author: Fam Zheng <famz@redhat.com>
Message-id: <20180129053819.14507-1-famz@redhat.com>
Patchwork-id: 78734
O-Subject: [RHV7.5 qemu-kvm-rhev PATCH] usb-storage: Fix share-rw option parsing
Bugzilla: 1525324
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>

Because usb-storage creates an internal scsi device, we should propagate
options. We already do so for bootindex etc, but failed to take care of
share-rw. Fix it in an apparent way: add a new parameter to
scsi_bus_legacy_add_drive and pass in s->conf.share_rw.

Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-id: 20180117005222.4781-1-famz@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 395b95395934785ca86baafd314d0c31b307d16d)
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>

Conflicts:
	hw/usb/dev-storage.c
Contextual conflict. Upstream has cleaned up err parameter in ceff3e1f0
(hw/block: Use errp directly rather than local_err), which is an
unrelated code refactoring and has other dependencies.
---
 hw/scsi/scsi-bus.c     | 9 ++++++++-
 hw/usb/dev-storage.c   | 3 ++-
 include/hw/scsi/scsi.h | 1 +
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 97c9525..26148aa 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -224,6 +224,7 @@ static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
 /* handle legacy '-drive if=scsi,...' cmd line args */
 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
                                       int unit, bool removable, int bootindex,
+                                      bool share_rw,
                                       const char *serial, Error **errp)
 {
     const char *driver;
@@ -254,6 +255,12 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
         object_unparent(OBJECT(dev));
         return NULL;
     }
+    object_property_set_bool(OBJECT(dev), share_rw, "share-rw", &err);
+    if (err != NULL) {
+        error_propagate(errp, err);
+        object_unparent(OBJECT(dev));
+        return NULL;
+    }
     object_property_set_bool(OBJECT(dev), true, "realized", &err);
     if (err != NULL) {
         error_propagate(errp, err);
@@ -292,7 +299,7 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
 #endif
         }
         scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
-                                  unit, false, -1, NULL, &error_fatal);
+                                  unit, false, -1, false, NULL, &error_fatal);
     }
     loc_pop(&loc);
 }
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index 8a61ec9..ff18ad5 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -635,7 +635,8 @@ static void usb_msd_realize_storage(USBDevice *dev, Error **errp)
     scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
                  &usb_msd_scsi_info_storage, NULL);
     scsi_dev = scsi_bus_legacy_add_drive(&s->bus, blk, 0, !!s->removable,
-                                         s->conf.bootindex, dev->serial,
+                                         s->conf.bootindex, s->conf.share_rw,
+                                         dev->serial,
                                          &err);
     blk_unref(blk);
     if (!scsi_dev) {
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
index 23a8ee6..802a647 100644
--- a/include/hw/scsi/scsi.h
+++ b/include/hw/scsi/scsi.h
@@ -151,6 +151,7 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
 
 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
                                       int unit, bool removable, int bootindex,
+                                      bool share_rw,
                                       const char *serial, Error **errp);
 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated);
 void scsi_legacy_handle_cmdline(void);
-- 
1.8.3.1