docs/interop/parallels.rst

8    This work is licensed under the terms of the GNU GPL, version 2 or later.
12 A Parallels expandable image file consists of three consecutive parts:
29   A data chunk of the size specified in the image header.
31   versions, cluster sizes of 63 sectors, 256 and 252 kilobytes were used.
40 The header is placed at the start of an image and contains the following
77               version of the software that doesn't support Format Extension
83               An offset, in sectors, from the start of the file to the start of
87               - If data_off is zero, the offset is calculated as the end of BAT
105               Format Extension offset, an offset, in sectors, from the start of
106               the file to the start of the Format Extension Cluster.
115 contiguous array of 32-bit unsigned little-endian integers with
118 Each BAT entry contains an offset from the start of the file to the
131 - the result of ``(cluster offset - data offset)`` must be aligned to
138 or calculated as specified above) to the end of the file. It represents a
139 contiguous array of clusters. Most of them are allocated by the BAT, some may
150 The format of the Format Extension area is the following::
156               The MD5 checksum of the entire Header Extension cluster except
160 extension must be "End of features" (see below).
165               The identifier of the feature:
166               0x0000000000000000 - End of features
186               The size of the following feature data, in bytes.
196 The last extension must be "End of features" with all the fields set to 0.
202 This feature provides a way of storing dirty bitmaps in the image. The fields
203 of its data area are::
212               Bitmap granularity, in sectors. I.e., the number of sectors
213               corresponding to one bit of the bitmap. Granularity must be
214               a power of 2.
217               The number of entries in the L1 table of the bitmap.
221 The dirty bitmap described by this feature extension is stored in a set of
222 clusters inside the Parallels image file. The offsets of these clusters are
230 If an L1 table entry is 0, all bits in the corresponding cluster of the bitmap
233 If an L1 table entry is 1, all bits in the corresponding cluster of the bitmap