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authorDr. David Alan Gilbert <dgilbert@redhat.com>2017-02-03 16:06:48 +0000
committerDr. David Alan Gilbert <dgilbert@redhat.com>2017-02-13 17:27:14 +0000
commitb5b5c569570c414bf0aa80a5ae9480debe07ed58 (patch)
treef52d337a91b135372355f4188b19e3273bfd2105 /include
parenta8664ba5101446f4f2c24b24ed9e10335bbbd46b (diff)
migration: Add VMSTATE_UNUSED_VARRAY_UINT32
VMSTATE_UNUSED_VARRAY_UINT32 is used to skip a chunk of the stream that's an n-element array; note the array size and the dynamic value read never get multiplied so there's no overflow risk. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20170203160651.19917-2-dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/migration/vmstate.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index 39db47eb3f..7339594337 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -658,6 +658,17 @@ extern const VMStateInfo vmstate_info_qtailq;
.flags = VMS_BUFFER, \
}
+/* Discard size * field_num bytes, where field_num is a uint32 member */
+#define VMSTATE_UNUSED_VARRAY_UINT32(_state, _test, _version, _field_num, _size) {\
+ .name = "unused", \
+ .field_exists = (_test), \
+ .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
+ .version_id = (_version), \
+ .size = (_size), \
+ .info = &vmstate_info_unused_buffer, \
+ .flags = VMS_VARRAY_UINT32 | VMS_BUFFER, \
+}
+
/* _field_size should be a int32_t field in the _state struct giving the
* size of the bitmap _field in bits.
*/