squashfs-tools-ng.git - A new set of tools and libraries for working with SquashFS images

Age	Commit message (Collapse)	Author
2022-10-10	block writer: further cleanup of the block writer logic	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-09-20	block writer: move block comaprison to utility function	David Oberhollenzer
	Slightly modify the byte-for-byte comparison function to compare an arbitrary range in a file and move it to libutil. Instead of calling it for each block in the block writer, simply let it check an entire range in the block writer and compute the range position/size of the reference ahead, before looking for potential matches. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-09-20	block writer: remove open coded array	David Oberhollenzer
	Instead of open coding it, use the array_t type from libutil. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08	Cleanup: move libutil headers to sub directory	David Oberhollenzer
	Move all the libutil stuff from the toplevel include/ to a util/ sub directory and fix up the includes that make use of them. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-06-07	libsquashfs: fix block alignment if requested	David Oberhollenzer
	1) If the block alignment flag is set, the padding bytes must be inserted _before_ recording the start position, otherwise the resulting image is not readable. 2) Also perform alignment if the flag is set on a fragment block. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-02-10	Always use the correct data type for realloc return value	David Oberhollenzer
	This commit mainly serves the static analysis tooling. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-12-06	libsqfs: implement exact matching in the default block writer.	David Oberhollenzer
	Instead of comparing (compresed, disk-size, checksum) tuples to find block matches, do an exact, byte-for-byte comparison of the data stored on disk to avoid the possibility of a spurious colision. Since this is the desired behaviour, make it the default, optionally overrideable through a flag. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-29	Support associating a user pointer with data blocks	David Oberhollenzer
	This commit modifies the block processor to support associating a user data pointer with data blocks that it forwards to the block writer, which is modified to accept an optional user data pointer. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-29	Turn the sqfs_block_writer_t into an interface	David Oberhollenzer
	This way, everything that could be done through the hooks (and more) can be done by simply providign a custom implementation. The result is a lot clener that the previous hook based version. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-29	cleanup: libsqfs: eliminate block writer statistics	David Oberhollenzer
	- the "bytes submitted" can be moved over to the block processor - the number of blocks submitted are already there (implcitily, by adding the data block count to the fragment block count) - actual data bytes written can be computed from the super block - the remaining block count can be changed to simple counter that can be obtained through a function. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-29	cleanup: libsqfs: remove hooks from sqfs_block_writer_t	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-03-04	Fix block writer inheritance of sqfs_object_t	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-03-01	Add a "do not deduplicate" block flag	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-16	block processor: move sparse block detection into worker thread	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-12	Implement a more explicit object system	David Oberhollenzer
	Make every dynamically allocated, opaque data structure inherit from a common sqfs_object_t structure with common entry points (e.g. destroy). This removes tons of public API functions and replaces them with a simple sqfs_destroy instead. If semantics of the (until now implicit) object system need to be extended, it can be much more conveniantely done this way. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-12	Clenaup: remove useage of sqfs_block_t from block writer	David Oberhollenzer
	The sqfs_block_t structure has been written for the block processor and exposes way too many internals. This commit removes its usage from the block writer, cutting it down to the bare essentials, so the structure can be removed from the public API later on. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-10	Cleanup: remove the fragment store/discard and block discard hooks	David Oberhollenzer
	There is no obvious non-footgun use for those other than tallying statistics, which is now done by the data structures themselves. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-02-10	Add run time statistics to the block writer and processor	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-01-31	Split the block writing/deduplication away from the block processor	David Oberhollenzer
	This commit moves the entire block writing and deduplication of data blocks over to a different data type named "block writer". For simplicity, the interfaces of the block processor are left as is and are turned into warppers. Likewise, most of the code in the block writer is just verbatim from the block processor, to be cleaned up in subsequent commits. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>