block: Introduce bdrv_get_encrypted_filename (Jan Kiszka)

Introduce bdrv_get_encrypted_filename service to allow more informative
password prompting.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6704 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 10 insertions, 0 deletions

diff --git a/block.c b/block.c
index 6bbc389ff0..e35c9a65aa 100644
--- a/block.c
+++ b/block.c
@@ -1134,6 +1134,16 @@ void bdrv_info_stats (void)
     }
 }
 
+const char *bdrv_get_encrypted_filename(BlockDriverState *bs)
+{
+    if (bs->backing_hd && bs->backing_hd->encrypted)
+        return bs->backing_file;
+    else if (bs->encrypted)
+        return bs->filename;
+    else
+        return NULL;
+}
+
 void bdrv_get_backing_filename(BlockDriverState *bs,
                                char *filename, int filename_size)
 {