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path: root/lib/sqfshelper/data_writer.c
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2019-09-23Cleanup block processor flag handlingDavid Oberhollenzer
First, remove the "Don't checksum" flag, fragment blocks also need to be checksumed and are also subject to deduplication. For sentinel blocks, instead check if the size is zero. Second, cleanly seperate the user settable flags from the non-user settable flags and reject any block that has non-user settable or unknown flags set. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-23Move the bulk of the work from the data writer to the block processorDavid Oberhollenzer
Instead of calling a callback, the block processor now takes care of writing the data blocks to the file in the correct order, keeping track of fragment blocks and deduplicating blocks. Some cleanup work remains to be done and the statistics have to be repaired (yet again). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-23Move fragment table resizing into block processor callbackDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-23Replace user pointer in sqfs_block_t with explicit inode pointerDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-22Use inode structures in the data writer instead of fstree file infoDavid Oberhollenzer
Changes are minor, but needs some temporary hacks in fstree again. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-22Move data writer custom flags over to block processorDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-15Fix data block deduplicationDavid Oberhollenzer
Because deduplication can now cross file boundaries, we have to include the fragment blocks in-between. Also, allow self-overlapping deduplication. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-15Merge data writer file processing functionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-15Move condensed-sparse-file handling to libsquashfsDavid Oberhollenzer
Add another helper function for getting a blocks from a condensed sparse file, then rewrite the data writer to use that instead, using an sqfs_file_t pointer instead of direct file i/o. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-15Move sparse_map_t to libsquashfs headers, rename it to sqfs_sparse_map_tDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-15Replace file descriptor IO in data_writer with sqfs_file_tDavid Oberhollenzer
First, this commit moves the create-blocks-from-fd function over to libsquashfs and ports it to work on an sqfs_file_t instead. Second, the function in the data_writer that reads from a file descriptor is adjusted to use an sqfs_file_t instead. Finally, the tools that use it have to be adjusted accordingly. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-14Remove fstree file flagsDavid Oberhollenzer
As a side effect, this requires the data writer to keep track of statistics. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-14Move data deduplication from fstree code to data writerDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-10Make the thread pool queue backlog user configurableDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-09Remove ad-hoc image size accountingDavid Oberhollenzer
Much simpler to just set the correct size in the end, before writing the super block. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-08Replace direct file I/O with abstraction layerDavid Oberhollenzer
This should make it easier to use libsquashfs with custom setups that embedd a squashfs image inside something else. Also, it should make it easier to port to non unix-like platforms. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-05Cleanup naming scheme of compressorDavid Oberhollenzer
Add sqfs_* prefix to compressor, move implementation prefix up front. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-05Cleanup: add SQFS_*/sqfs_* prefix to block processorDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-05Minor cleanup: remove if (...) goto skip construct from data readerDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-05Cleanup: move "create_block" from block processor over to data writerDavid Oberhollenzer
It only has one user and is quite specialized actually. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-01Install libsquashfs.so headers on the system in "sqfs" subdirectoryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-08-31Split libsquashfs.a into low seperate librariesDavid Oberhollenzer
The idea is to make libsquashfs.a independend of libfstree.a, so it becomes a general purpose squashfs manipulation library. All the high level glue code for libfstree.a and utilites that are overly specific with to tools are moved to a seperate librarby. This commit makes the first step by moving the stuff with dependencies on libfstree to a seperate library. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>