[libvirt] [PATCH 09/12] qemu: Restore unpriv_sgio when detaching disk

[Osier Yang]

Later patch will prohibit restoring it the disk is being shared
by other domain(s). Note that this only cares about the non-shared
disk. Later patch will change the codes to honor the orig_cdbfilter
of sharedDisks entry.
---
 src/qemu/qemu_driver.c |   24 ++++++++++++++++++++----
 1 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index a16e336..b394eb9 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6188,10 +6188,26 @@ qemuDomainDetachDeviceDiskLive(virQEMUDriverPtr driver,
         break;
     }
 
-    if (ret == 0 && disk->shared) {
-        if (qemuRemoveSharedDisk(driver->sharedDisks, disk->src) < 0)
-             VIR_WARN("Failed to remove disk '%s' from shared disk table",
-                      disk->src);
+    if (ret == 0) {
+        /* Restore the disk's unpriv_sgio */
+        if (disk->cdbfilter) {
+            int val;
+
+            if (disk->orig_cdbfilter == VIR_DOMAIN_DISK_CDB_FILTER_YES)
+                val = 0;
+            else
+                val = 1;
+
+            if (virSetDeviceUnprivSGIO(disk->src, val) < 0)
+                VIR_DEBUG("Failed to restore unpriv_sgio for disk '%s'",
+                          disk->src);
+        }
+
+        if (disk->shared) {
+            if (qemuRemoveSharedDisk(driver->sharedDisks, disk->src) < 0)
+                 VIR_WARN("Failed to remove disk '%s' from shared disk table",
+                          disk->src);
+        }
     }
 
     return ret;
-- 
1.7.7.6