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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 <jcody@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jeff Cody 2013-09-25 12:08:51 -04:00 committed by Kevin Wolf
parent c4217f645d
commit 687fb89366
1 changed files with 1 additions and 1 deletions
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block/qed.h
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@ -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 */