[Qemu-devel] [PATCH 09/20] cow: correctly propagate errors

[Paolo Bonzini <pbonzini@redhat.com>]

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 block/cow.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/block/cow.c b/block/cow.c
index 7fc0b12..43a2150 100644
--- a/block/cow.c
+++ b/block/cow.c
@@ -82,7 +82,7 @@ static int cow_open(BlockDriverState *bs, QDict *options, int flags,
         char version[64];
         snprintf(version, sizeof(version),
                "COW version %d", cow_header.version);
-        qerror_report(QERR_UNKNOWN_BLOCK_FORMAT_FEATURE,
+        error_set(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE,
             bs->device_name, "cow", version);
         ret = -ENOTSUP;
         goto fail;
@@ -330,7 +330,6 @@ static int cow_create(const char *filename, QEMUOptionParameter *options,
     struct stat st;
     int64_t image_sectors = 0;
     const char *image_filename = NULL;
-    Error *local_err = NULL;
     int ret;
     BlockDriverState *cow_bs;
 
@@ -344,18 +343,13 @@ static int cow_create(const char *filename, QEMUOptionParameter *options,
         options++;
     }
 
-    ret = bdrv_create_file(filename, options, &local_err);
+    ret = bdrv_create_file(filename, options, errp);
     if (ret < 0) {
-        qerror_report_err(local_err);
-        error_free(local_err);
         return ret;
     }
 
-    ret = bdrv_file_open(&cow_bs, filename, NULL, NULL, BDRV_O_RDWR,
-                         &local_err);
+    ret = bdrv_file_open(&cow_bs, filename, NULL, NULL, BDRV_O_RDWR, errp);
     if (ret < 0) {
-        qerror_report_err(local_err);
-        error_free(local_err);
         return ret;
     }
 
-- 
1.8.5.3