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[Qemu-devel] [PATCH v2 4/4] block: qed - use QEMU_PACKED for on-disk str
From: |
Jeff Cody |
Subject: |
[Qemu-devel] [PATCH v2 4/4] block: qed - use QEMU_PACKED for on-disk structures |
Date: |
Wed, 25 Sep 2013 12:08:51 -0400 |
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 <address@hidden>
---
block/qed.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/qed.h b/block/qed.h
index 2b4dded..5d65bea 100644
--- 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 */
--
1.8.3.1