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

Age	Commit message (Collapse)	Author
2019-06-30	Add support for repacking condensed sparse files	David Oberhollenzer
	This commit broadly does the following things: - Rename and move the sparse mapping structure to libutil - Add a function to the data writer for writing condensed versions of sparse files, given the mapping. - This shares code with the already existing function for regular files. The shared code is moved to a common helper function. - Add support to tar2sqfs for repacking sparse files. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-28	Add support for unpacking sparse files as sparse files	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-28	Add support for packing sparse files	David Oberhollenzer
	This commit adds support for packing sparse files into squashfs images as follows: - In the data writer: simply detect zero blocks and write a zero to the block size field and don't emit any data. Record the number of bytes saved this way. For fragments, set the fragment offset to invalid. - In the inode writer: write out the number of bytes saved for sparse files. If there should be a fragment but there is none, append a block count of 0. - In the data reader: if the block size is 0, read nothing from disk and emit an empty block. Do the same if the fragment is missing. - In the inode reader: restore the number of bytes saved for sparse files. The sparse files can be packed and unpacked, but the unpacking will not create sparse files for now. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-28	Ommit fragment table if there really are no fragments	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-28	Fix inode fragment & sparse counter initialization	David Oberhollenzer
	The sparse attribute should be initialized with 0. It is subtracted from the file size in the kernel to determine the file size on disk to report to stat(2). So it actually didn't matter anyway (just for correctness sake). Second, the fragment index and offset should be set to 0xFFFFFFFF in the rare case that no fragments exist. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-22	Cleanup: split fstree sort into 2 fstree independend functions	David Oberhollenzer
	Make tree node list sort and recursive variant available and independend of the fstree_t. This is considered cleaner, since the fstree_t actually isn't needed for any of this and we can just call the recusvie sort on the root instead, and we can use the sort implementation directly for things like the upcoming unit test. Also this commit splits up the merge/sort implementation into a seperate split and merge functions to make the code somewhat more readable. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-19	Cleanup fstree code	David Oberhollenzer
	Replace default_$FIELD with a struct stat. Merge the rest of add_node/add_file into mknode and add by path+stat. Expose the mknode function and replace all the duplicated node pointer arithmetic magic with a call to mknode. Plus a generic cleanup by utlizing new util functions. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15	Move super block version check to sqfs_super_read	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11	Move file extraction code to generic data_reader_t in libsquashfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11	Move write_xattr to libsqfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11	Move data writer to libsqfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10	cleanup: move tree deserialization to libsqfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10	Rename table.h to highlevel.h	David Oberhollenzer
	The idea is to move various higher level helper functions there. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10	cleanup: move entire fstree serialization to libsqfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-20	cleanup: internalize frag_reader_t implementation	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-20	cleanup: internalize meta reader/writer implementations	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-20	Get rid of unalligned pointers	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-19	rdsquashfs: fix read_inode_slink_ext return	David Oberhollenzer
	Return the actual object, not 0. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-04	Remove compressor internal buffers	David Oberhollenzer
	Pass in an external destination buffer + size and allow for propper bounds checking (especially when unpacking). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-03	Add utility functions to read the fragment data from an image	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-03	Add helper function for reading dir entries to meta reader	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-03	Add function to read generic inode from meta data reader	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	unsquashfs: read ID table from file	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Add meta data reader implementation	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Add unsquashfs stub	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	cleanup round	David Oberhollenzer
	- remove debug prints - move id table write out to id table code - dummy remove wrapper function for fragment table Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Write out the missing tables	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Add id table code stub	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Move super block init/write code to libsquashfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-02	Move abstract squashfs I/O code to libsquashfs.a	David Oberhollenzer
	Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>