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migration: Add VMSTATE_UNUSED_VARRAY_UINT32

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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>
This commit is contained in:
Dr. David Alan Gilbert 2017-02-03 16:06:48 +00:00
parent a8664ba510
commit b5b5c56957
1 changed files with 11 additions and 0 deletions
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11
include/migration/vmstate.h
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@ -658,6 +658,17 @@ extern const VMStateInfo vmstate_info_qtailq;
.flags = VMS_BUFFER, \ .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 /* _field_size should be a int32_t field in the _state struct giving the
* size of the bitmap _field in bits. * size of the bitmap _field in bits.
*/ */