dissect.hypervisor.backup.vma
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Module Contents#
Classes#
Proxmox VMA. |
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Basic buffered stream that provides easy aligned reads. |
- class dissect.hypervisor.backup.vma.VMA(fh)#
Proxmox VMA.
Parse and provide a readable object for devices in a Proxmox VMA backup file. VMA is designed to be streamed for extraction, so we need to do some funny stuff to create a readable object from it. Performance is not optimal, so it’s generally advised to extract a VMA instead. The vma-extract utility can be used for that.
- property creation_time#
- blob_data(offset)#
- blob_string(offset)#
- config(name)#
- configs()#
- device(dev_id)#
- devices()#
- extents()#
- class dissect.hypervisor.backup.vma.Device(vma, dev_id, name, size)#
- __repr__()#
Return repr(self).
- open()#
- class dissect.hypervisor.backup.vma.DeviceDataStream(device)#
Bases:
dissect.util.stream.AlignedStream
Basic buffered stream that provides easy aligned reads.
- Must be subclassed for various stream implementations. Subclasses can implement:
_read(offset, length)
_seek(pos, whence=io.SEEK_SET)
The offset and length for _read are guaranteed to be aligned. The only time that overriding _seek would make sense is if there’s no known size of your stream, but still want to provide SEEK_END functionality.
Most subclasses of AlignedStream take one or more file-like objects as source. Operations on these subclasses, like reading, will modify the source file-like object as a side effect.
- Parameters:
size – The size of the stream. This is used in read and seek operations. None if unknown.
align – The alignment size. Read operations are aligned on this boundary. Also determines buffer size.