On 5 Feb 2002, Jos Backus <[EMAIL PROTECTED]> wrote: > On Wed, Feb 06, 2002 at 02:30:51PM +1100, Martin Pool wrote: > > rsync includes a slightly modified and incompatible version of zlib. > > (PhD-project over-optimization...) To update to a newer zlib would > > require merging those changes across. > > Just so I understand this correctly: does this patched version of zlib 1.1.2 > generate a compressed datastream which 1.1.3 cannot decompress, or > vice versa?
Unfortunately, yes. From rsync/src/zlib/README.rsync: ~ zlib has been adapted slightly for use in rsync. Please don't bother ~ the zlib authors with problems related to the use of zlib in rsync as ~ any bugs are likely to be our fault and not theirs. ~ ~ Specific changes that have been made to zlib for rsync include: ~ ~ - add Z_INSERT_ONLY to allow for efficient history updating without ~ actually emitting any data. This is used to compress the matched ~ blocks that don't cross the wire, which gives better compression ~ ratios on the literal data. ~ ~ - fixed a number of minor compilation issues. (redefinition of MAX and ~ other such trivial things) ~ ~ - include rsync.h to ensure that we get a consistent set of includes ~ for all C code in rsync and to take advantage of autoconf ~ ~ -- ~ Paul Mackerras and Andrew Tridgell I'm going to do a three-way merge from 1.1.2->1.1.3 and 1.1.2->rsync, and then perhaps send the patch to the upstream maintainers. Whether they will accept it is another matter. -- Martin -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
