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librsync 2.0.1
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@dbaarda dbaarda released this 17 Oct 01:52
· 427 commits to master since this release
v2.0.1
f1dea6d

Overview

Although this is only a minor point release it is long overdue and includes a large number of performance improvements and bug fixes. It should be significantly faster than any earlier version, particularly for large files. It should also be more robust and reliable. People are strongly encouraged to upgrade.

Included Changes

  • Extensively reworked Doxygen documentation, now available at
    http://librsync.sourcefrog.net/ (Martin Pool)

  • Removed some declarations from librsync.h that were unimplemented or no
    longer ever useful: rs_work_options, rs_accum_value. Remove
    declaration of unimplemented rs_mdfour_file(). (Martin Pool)

  • Remove shipped snprintf code: no longer acutally linked after changing to
    CMake, and since it's part of C99 it should be widely available.
    (Martin Pool)

  • Document that Ninja (http://ninja-build.org/) is supported under CMake.
    It's a bit faster and nicer than Make. (Martin Pool)

  • make check (or ninja check etc) will now build and run the tests.
    Previously due to a CMake limitation, make test would only run existing
    tests and could fail if they weren't built.
    (Martin Pool, #49)

  • Added cmake options to exclude rdiff target and compression from build.
    See install documentation for details. Thanks to Michele Bertasi.

  • popt is only needed when rdiff is being built. (gulikoza)

  • Improved large file support for platforms using different variants
    of fseek (fseeko, fseeko64, _fseeki64), fstat (fstat64,
    _fstati64), and fileno (_fileno). (dbaarda, charlievieth,
    gulikoza, marius-nicolae)

  • rdiff -s option now shows bytes read/written and speed. (gulikoza).
    For delta operations it also shows hashtable match statistics. (dbaarda)

  • Running rdiff should not overwrite existing files (signatures, deltas and
    new patched files) by default. If the destination file exists, rdiff will
    now exit with an error. Add new option -f (--force) to overwrite existing
    files. (gulikoza)

  • Improve signature memory allocation (doubling size instead of calling
    realloc for every sig block) and added support for preallocation. See
    streaming.md job->estimated_signature_count for usage when using the
    library. rdiff uses this by default if possible. (gulikoza, dbaarda)

  • Significantly tidied signature handling code and testing, resulting in more
    consistent error handling behaviour, and making it easier to plug in
    alternative weak and strong sum implementations. Also fixed "slack delta"
    support for delta calculation with no signature. (dbaarda)

  • stdint.h and inttypes.h from C99 is now required. Removed redundant
    librsync-config.h header file. (dbaarda)

  • Lots of small fixes for windows platforms and building with MSVC.
    (lasalvavida, mbrt, dbaarda)

  • New open addressing hashtable implementation that significantly speeds up
    delta operations, particularly for large files. Also fixed degenerate
    behaviour with large number of duplicate blocks like runs of zeros
    in sparse files. (dbaarda)

  • Optional support with cmake option for using libb2 blake2 implementation.
    Also updated included reference blake2 implementation with bug fixes
    (dbaarda).

  • Improved default values for input and output buffer sizes. The defaults are
    now --input-size=0 and --output-size=0, which will choose recommended
    default sizes based on the --block-size and the operation being performed.
    (dbaarda)

  • Fixed hanging for truncated input files. It will now correctly report an
    error indicating an unexpected EOF was encountered. (dbaarda,
    #32)

  • Fixed #13 so that faster slack delta's are used for signatures of
    empty files. (dbaarda,
    #13)

  • Fixed #33 so rs_job_iter() doesn't need calling twice with eof=1.
    Also tidied and optimized it a bit. (dbaarda,
    #33)

  • Fixed #55 remove excessive rs_fatal() calls, replacing checks for
    programming errors with assert statements. Now rs_fatal() will only
    be called for rare unrecoverable fatal errors like malloc failures or
    impossibly large inputs. (dbaarda,
    #55)

Known Issues

  • The rpm and debian package configs are very out of date.
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