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[5/5] block: qed - use QEMU_PACKED for on-disk structures

Message ID 55b3c429d1a138b0a96e3d0f673b029fe5801ec5.1379615569.git.jcody@redhat.com
State New
Headers show

Commit Message

Jeff Cody Sept. 19, 2013, 6:43 p.m. UTC 
QEDHeader is read, and written, directly from on-disk images
via bdrv_pread()/write().  To avoid any unintentional padding,
these structs should be packed.

Signed-off-by: Jeff Cody <jcody@redhat.com>
---
 block/qed.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/block/qed.h b/block/qed.h
index 2b4dded..4d6c812 100644
--- a/block/qed.h
+++ b/block/qed.h
@@ -83,7 +83,7 @@  enum {
     QED_NEED_CHECK_TIMEOUT = 5,    /* in seconds */
 };
 
-typedef struct {
+typedef struct QEMU_PACKED {
     uint32_t magic;                 /* QED\0 */
 
     uint32_t cluster_size;          /* in bytes */