block: qed - use QEMU_PACKED for on-disk structures

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 <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Signed-off-by: Kevin Wolf <[email protected]>
zhanleewo · Sep 25, 2013 · 687fb89 · 687fb89
1 parent c4217f6
commit 687fb89
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/block/qed.h b/block/qed.h
@@ -100,7 +100,7 @@ typedef struct {
     /* if (features & QED_F_BACKING_FILE) */
     uint32_t backing_filename_offset; /* in bytes from start of header */
     uint32_t backing_filename_size;   /* in bytes */
-} QEDHeader;
+} QEMU_PACKED QEDHeader;
 
 typedef struct {
     uint64_t offsets[0];            /* in bytes */