From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 23 Nov 2011 10:38:01 +0000 (+0100)
Subject: vpc: Add missing error handling in alloc_block
X-Git-Tag: qemu-xen-4.3.0-rc1~1966^2
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=5bb1cbac4fdb1ca28f33c8d68538d03e3db7c160;p=qemu-upstream-4.3-testing.git

vpc: Add missing error handling in alloc_block

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---

diff --git a/block/vpc.c b/block/vpc.c
index 75d7d4ac7..89a5ee266 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -362,8 +362,11 @@ static int64_t alloc_block(BlockDriverState* bs, int64_t sector_num)
 
     // Initialize the block's bitmap
     memset(bitmap, 0xff, s->bitmap_size);
-    bdrv_pwrite_sync(bs->file, s->free_data_block_offset, bitmap,
+    ret = bdrv_pwrite_sync(bs->file, s->free_data_block_offset, bitmap,
         s->bitmap_size);
+    if (ret < 0) {
+        return ret;
+    }
 
     // Write new footer (the old one will be overwritten)
     s->free_data_block_offset += s->block_size + s->bitmap_size;