Commit b5b5c569 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert
Browse files

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: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170203160651.19917-2-dgilbert@redhat.com>
Reviewed-by: default avatarJuan Quintela <quintela@redhat.com>
Signed-off-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
parent a8664ba5

include/migration/vmstate.h

+11 −0
Original line number Diff line number Diff line
@@ -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.

 */