qemu: Add helper to initialize storage file backend with correct uid/gid

Add a wrapper that determines the correct uid and gid for a certain
storage file and domain.

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 5ec57653c8faafbf4797aa8b66c158ee1876b47f..4f63c883933df539f2c7f67e3873af25f7438907 100644 (file)
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -2437,6 +2437,29 @@ qemuDomainGetImageIds(virQEMUDriverConfigPtr cfg,
 }
 
 
+int
+qemuDomainStorageFileInit(virQEMUDriverPtr driver,
+                          virDomainObjPtr vm,
+                          virStorageSourcePtr src)
+{
+    virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+    uid_t uid;
+    gid_t gid;
+    int ret = -1;
+
+    qemuDomainGetImageIds(cfg, vm, src, &uid, &gid);
+
+    if (virStorageFileInitAs(src, uid, gid) < 0)
+        goto cleanup;
+
+    ret = 0;
+
+ cleanup:
+    virObjectUnref(cfg);
+    return ret;
+}
+
+
 int
 qemuDomainDetermineDiskChain(virQEMUDriverPtr driver,
                              virDomainObjPtr vm,

diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 3bda446c04e8c303eb169c9346984370396e9a46..67972b917bcffb96dd5edfa988af1162d2f1343a 100644 (file)
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -353,6 +353,10 @@ int qemuDomainDetermineDiskChain(virQEMUDriverPtr driver,
                                  virDomainDiskDefPtr disk,
                                  bool force);
 
+int qemuDomainStorageFileInit(virQEMUDriverPtr driver,
+                              virDomainObjPtr vm,
+                              virStorageSourcePtr src);
+
 int qemuDomainCleanupAdd(virDomainObjPtr vm,
                          qemuDomainCleanupCallback cb);
 void qemuDomainCleanupRemove(virDomainObjPtr vm,