[Qemu-devel] [PATCH 2/4] block: Improve error report for wrong format

[Stefan Weil]

There is no good system error for this kind of error,
so it needs special handling instead of strerror.

Signed-off-by: Stefan Weil <s...@weilnetz.de>
---
 blockdev.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 5a4cd56..3da44f6 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -624,8 +624,13 @@ DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType 
block_default_type)
 
     ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv);
     if (ret < 0) {
-        error_report("could not open disk image %s: %s",
-                     file, strerror(-ret));
+        if (ret == BDRV_WRONG_FORMAT) {
+            error_report("could not open disk image %s: not in %s format",
+                         file, drv->format_name);
+        } else {
+            error_report("could not open disk image %s: %s",
+                         file, strerror(-ret));
+        }
         goto err;
     }
 
-- 
1.7.10.4