On Wed, 3 Dec 2008, Lasse Collin wrote: > Once the stable release of the xz package is out, I could be willing to > write an easy-to-use .xz decoder that is suitable for inclusion to > Linux (including proper coding style with comments). I have understood, > that for kernel and initramfs compression as well as for SquashFS, it > would be enough to support single-call buffer-to-buffer decoding > (comparable to uncompress() in zlib). Such code can be significantly > simpler than stateful multi-call implementation. SquashFS does not do one-shot decompression, it calls the decompressor multiple times, after reading each block. I guess that can be changed, but it will increase memory pressure, as blocks cannot be released until the decompression has finished. Other compressed file systems that use (de)compression through the crypto API do use one-shot (de)compression, as the current crypto API doesn't support partial (de)compression. That includes Ubifs. Note that I'm working on enhancing the crypto API to relax this limitation. So please provide a stateful multi-call implementation ;-) With kind regards, Geert Uytterhoeven Software Architect Sony Techsoft Centre Europe The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium Phone: +32 (0)2 700 8453 Fax: +32 (0)2 700 8622 E-mail: Geert.Uytterhoeven@xxxxxxxxxxx Internet: http://www.sony-europe.com/ A division of Sony Europe (Belgium) N.V. VAT BE 0413.825.160 · RPR Brussels Fortis · BIC GEBABEBB · IBAN BE41293037680010 -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
