[PATCH V2 3/3] qemu: Check for valid save image format when verifying image header

[Jim Fehlig via Devel <devel@xxxxxxxxxxxxxxxxx>]

When attempting to restore a saved image, the check for a valid save image
format does not occur until the qemu process is about to be executed. Move
the check earlier in the restore process, along with the other checks that
verify a valid save image header.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---
 src/qemu/qemu_saveimage.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c
index 8315171b78..5c889fee11 100644
--- a/src/qemu/qemu_saveimage.c
+++ b/src/qemu/qemu_saveimage.c
@@ -289,6 +289,12 @@ qemuSaveImageReadHeader(int fd, virQEMUSaveData **ret_data)
         return -1;
     }
 
+    if (header->format >= QEMU_SAVE_FORMAT_LAST) {
+        virReportError(VIR_ERR_OPERATION_FAILED,
+                       _("unsupported save image format: %1$d"), header->format);
+        return -1;
+    }
+
     if (header->data_len <= 0) {
         virReportError(VIR_ERR_OPERATION_FAILED,
                        _("invalid header data length: %1$d"), header->data_len);
-- 
2.43.0