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2019-05-19Add ZSTD compressor implementationDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-06Add lz4 compressor implementationDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-06Implement reading and writing of compressor optionsDavid Oberhollenzer
- gensquashfs simply asks the backend compressor to write its options to the file and does accounting - rdsquasfs simply asks the backend compressor to transparentyl snort the options from the file - not implemented in any compressor backend yet Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-06Add LZO compressor implementationDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-04Rename lzma compressor to xz, zlib compressor to gzipDavid Oberhollenzer
Stick to the terminology that SquashFS uses. SquashFS uses "lzma" to refere to lzma1, "xz" to refere to lzma2 and confusingly "gzip" to refere to raw zlib deflate. We can avoid a lot of confusion by _consistently_ using the same terminology. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-05-04Remove compressor internal buffersDavid 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>
2019-05-02Add compressor libraryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>