File b662d0b5-qemu-raw-only-BlockPeek.patch of Package libvirt.9596

commit b662d0b52003accaea865a694c4eb35d87a3b5bc
Author: Peter Krempa <pkrempa@redhat.com>
Date:   Fri May 12 16:00:27 2017 +0200

    qemu: Support only raw volumes in qemuDomainBlockPeek
    
    The API documents that it peeks into the VM disk. We can't do that
    currently for non raw images so report an error.

Index: libvirt-3.3.0/src/qemu/qemu_driver.c
===================================================================
--- libvirt-3.3.0.orig/src/qemu/qemu_driver.c
+++ libvirt-3.3.0/src/qemu/qemu_driver.c
@@ -11156,6 +11156,7 @@ qemuDomainBlockPeek(virDomainPtr dom,
                     unsigned int flags)
 {
     virQEMUDriverPtr driver = dom->conn->privateData;
+    virDomainDiskDefPtr disk = NULL;
     virDomainObjPtr vm;
     int fd = -1, ret = -1;
     const char *actual;
@@ -11168,6 +11169,18 @@ qemuDomainBlockPeek(virDomainPtr dom,
     if (virDomainBlockPeekEnsureACL(dom->conn, vm->def) < 0)
         goto cleanup;
 
+    if (!(disk = virDomainDiskByName(vm->def, path, true))) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("invalid disk '%s'"), path);
+        goto cleanup;
+    }
+
+    if (disk->src->format != VIR_STORAGE_FILE_RAW) {
+        virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+                       _("peeking is supported only for RAW disks"));
+        goto cleanup;
+    }
+
     /* Check the path belongs to this domain.  */
     if (!(actual = virDomainDiskPathByName(vm->def, path))) {
         virReportError(VIR_ERR_INVALID_ARG,
@@ -11194,6 +11207,8 @@ qemuDomainBlockPeek(virDomainPtr dom,
     ret = 0;
 
  cleanup:
+    if (disk)
+        virStorageFileDeinit(disk->src);
     VIR_FORCE_CLOSE(fd);
     virDomainObjEndAPI(&vm);
     return ret;