[Qemu-devel] [PATCH v2 5/5] blockdev: use error_set_file_open_failed

[Alon Levy <alevy@redhat.com>]

This is a little trickier, since those calls chain in many fun ways and
produce sometimes their own return values reusing existing errno values
for similar meanings. In that respect error_set_file_open_failed
specifically ignores EINVAL, ENOTSUP and ENOENT. The first two simply
are not returned by open (2), but the last is but I chose to ignore it
to allow easy reuse in blockdev to avoid confusion when it is used
internally by the create functions.

Signed-off-by: Alon Levy <alevy@redhat.com>
---
 blockdev.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 1a500b8..544d067 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -777,7 +777,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
                                   states->old_bs->drv->format_name,
                                   NULL, -1, flags);
             if (ret) {
-                error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
+                error_set_file_open_failed(errp, new_image_file, -ret);
                 goto delete_and_fail;
             }
         }
@@ -787,7 +787,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
         ret = bdrv_open(states->new_bs, new_image_file,
                         flags | BDRV_O_NO_BACKING, drv);
         if (ret != 0) {
-            error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
+            error_set_file_open_failed(errp, new_image_file, -ret);
             goto delete_and_fail;
         }
     }
@@ -881,8 +881,11 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
                                     int bdrv_flags, BlockDriver *drv,
                                     const char *password, Error **errp)
 {
-    if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
-        error_set(errp, QERR_OPEN_FILE_FAILED, filename);
+    int ret;
+
+    ret = bdrv_open(bs, filename, bdrv_flags, drv);
+    if (ret < 0) {
+        error_set_file_open_failed(errp, filename, ret);
         return;
     }
 
-- 
1.7.9.3