[libvirt] [PATCH 5/8] qemu: set unpriv_sgio when domain starting

[Osier Yang]

Note that cdbfilter is not exactly match unpriv_sgio's value.
VIR_DOMAIN_DISK_CDB_FILTER_YES mean the kernel will filter the
SCSI commands, which maps to 0 of unpriv_sgio;
VIR_DOMAIN_DISK_CDB_FILTER_NO maps to 1 of unpriv_sgio.
---
 src/qemu/qemu_process.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index c3ecf6f..4117251 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3730,10 +3730,19 @@ int qemuProcessStart(virConnectPtr conn,
                            _("Raw I/O is not supported on this platform"));
 #endif
 
-       if (disk->type == VIR_DOMAIN_DISK_TYPE_BLOCK && disk->shared) {
+        if (disk->type == VIR_DOMAIN_DISK_TYPE_BLOCK && disk->shared) {
             if (qemuAddSharedDisk(driver->sharedDisks, disk->src) < 0)
                 goto cleanup;
         }
+
+        /* Set sysfs unpriv_sgio if cdbfilter is specified */
+        if (disk->cdbfilter) {
+            if (virSetDeviceUnprivSGIO(disk->src,
+                                       (disk->cdbfilter ==
+                                        VIR_DOMAIN_DISK_CDB_FILTER_NO)
+                                        ? 1 : 0) < 0)
+                goto cleanup;
+        }
     }
 
     virCommandSetPreExecHook(cmd, qemuProcessHook, &hookData);
-- 
1.7.7.6