commit 34b5d2c68eb4082c288e70fb99c61af8f7b96fde
author Max Reitz <mreitz@redhat.com> Thu Sep 05 14:45:29 2013 +0200
committer Kevin Wolf <kwolf@redhat.com> Thu Sep 12 10:12:48 2013 +0200
tree 7c4c1e4e248a8e044dd891b0e54de1fcc03d7434
parent d5124c00d80b4d948509f2c7f6b54228d9981f75

block: Error parameter for open functions

Add an Error ** parameter to bdrv_open, bdrv_file_open and associated
functions to allow more specific error messages.

Signed-off-by: Max Reitz <mreitz@redhat.com>

block/qcow.c

diff --git a/block/qcow.c b/block/qcow.c
index 0911edf..396636f 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -668,6 +668,7 @@
     int64_t total_size = 0;
     const char *backing_file = NULL;
     int flags = 0;
+    Error *local_err = NULL;
     int ret;
     BlockDriverState *qcow_bs;
 
@@ -688,8 +689,10 @@
         return ret;
     }
 
-    ret = bdrv_file_open(&qcow_bs, filename, NULL, BDRV_O_RDWR);
+    ret = bdrv_file_open(&qcow_bs, filename, NULL, BDRV_O_RDWR, &local_err);
     if (ret < 0) {
+        qerror_report_err(local_err);
+        error_free(local_err);
         return ret;
     }