pristine-tar (1.46) [PTS] [DDPO]

NEW: VCS has unreleased changes: 1.47 > 1.46

Git: https://salsa.debian.org/debian/pristine-tar.git
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Branch: master
Path: debian/changelog
Browser: https://salsa.debian.org/debian/pristine-tar
Last scan: 2019-10-18 03:52:02+00
Next scan: 2019-10-24 06:03:00+00
Merge requests: 1
CI pipeline status: success

Debian changelog in Git:

pristine-tar (1.47) UNRELEASED; urgency=medium

  [ Tomasz Buchert ]
  * d/control: move suggested dependencies to actual dependencies
  * drop "Restrictions: needs-recommends" from tests
  * d/control: add pixz as a dependency

  [ Kevin Locke ]
  * pristine-xz: Improve multi-thread detection and utilization
  * pristine-xz: Detect pixz compression (Closes: #892029, #913218)
  * pristine-xz: Check program before params
  * pristine-xz: Handle pixz tar index
  * pristine-xz: Set threads based on CPU affinity

 -- Tomasz Buchert <tomasz@debian.org>  Sun, 27 Jan 2019 11:03:37 +0100

This branch is 14 commits ahead of tag 1.46

Git log:

commit d3cc2e94084017e1ee68db8f7986b91b53dfbf1d
Author: Antonio Terceiro <terceiro@debian.org>
Date:   Mon Apr 8 09:02:11 2019 -0300

    gitlab-ci: drop pipeline no stable
    
    Several changes in the packaging makes pristine-tar not directly
    usable/buildable in stable.

commit 8f490831df477313879565c51d63d2dab77b698d
Author: Antonio Terceiro <terceiro@debian.org>
Date:   Sun Apr 7 22:37:11 2019 -0300

    debian/control: add missing Build dependency

commit aa2cde882d769282969f312f97511fbc4d18ce8b
Author: Antonio Terceiro <terceiro@debian.org>
Date:   Sun Apr 7 22:37:00 2019 -0300

    pristine-tar.spec: bump version number

commit 7dcd16508ca4f44ce78eb4ca2d01767a9c30eae6
Author: Antonio Terceiro <terceiro@debian.org>
Date:   Sun Apr 7 22:32:15 2019 -0300

    test.pl: fix exit status with test failures

commit da693958d71ed1a305d9804f873b9ac8a0630118
Author: Tomasz Buchert <tomasz@debian.org>
Date:   Sun Jan 27 11:04:59 2019 +0100

    pre-release

commit cd6391cba9ce8d6fa54553f598b097d898166e62
Merge: 6310160 ca6d112
Author: Tomasz Buchert <tomasz@debian.org>
Date:   Sun Jan 27 11:03:16 2019 +0100

    Merge branch 'kevinoid-guest/pristine-tar-multithreading-and-pixz'

commit ca6d11218d63b77c0342f39bf51df798cbdadd3d
Author: Kevin Locke <kevin@kevinlocke.name>
Date:   Sat Jan 26 11:19:50 2019 -0700

    pristine-xz: Set threads based on CPU affinity
    
    Instead of using only 2 threads for multi-threaded processing, use the
    number of CPUs available to the process (based on CPU affinity, as xz
    does for -T0) with a minimum of 2 to ensure sizes are set in block
    headers.
    
    Note:  Sys::CpuAffinity::getAffinity($$) is used instead of
    Sys::CpuAffinity::getNumCpus(), which was suggested in #873229, because
    using more CPUs than the configured affinity would be counter-productive
    (the threads would only be scheduled on the CPUs with affinity, causing
    contention).
    
    Fixes: #873229
    
    Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

commit cb5a0a07b67bcc795bde2073c8c4c4eb4a140744
Author: Kevin Locke <kevin@kevinlocke.name>
Date:   Sun Dec 2 22:23:56 2018 -0700

    pristine-xz: Handle pixz tar index
    
    When compressing a tar file, unless the `-t` option is passed, `pixz`
    adds a data block to the end of the xz stream which contains an index of
    the tar file contents.  During decompression, `xz` assumes the data
    block contains file data and appends the decompressed data to the output
    file.  This confuses pristine-xz, since there is no way to compress the
    data+index such that it matches the original.  To avoid this, use `pixz`
    to decompress, when available.
    
    When a pixz tar index is present (detected using `pixz -l`), skip
    compression testing with `xz`, since we know it won't work.  This saves
    significant time for large archives.
    
    Fixes the xz-related portion of #859303.
    
    Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

commit 74f6b99fa46f70c5592fba22cee8320a89e49564
Author: Kevin Locke <kevin@kevinlocke.name>
Date:   Sun Dec 2 21:38:23 2018 -0700

    pristine-xz: Check program before params
    
    If the program check would fail, a parameter error is likely to be
    misleading.  Check program first to avoid this.
    
    Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

commit 4ff745f2d3e905d88718b5e57bc6b4baf479f55b
Author: Kevin Locke <kevin@kevinlocke.name>
Date:   Sun Dec 2 21:15:22 2018 -0700

    pristine-xz: Detect pixz compression
    
    There are at least 2 cases where `pixz` produces output which differs
    from `xz --check=crc32 -T2`:
    
    - When `pixz` compresses a `.tar` file and `-t` is not given it produces
      an extra xz data block which contains an index of the tar contents.
    
    - For blocks where the uncompressed size is significantly less than the
      expected block size, `xz` overestimates the block heading size, which
      results in >= 4 bytes of padding while `pixz` does not.  Examples:
      * https://mirrors.edge.kernel.org/pub/software/network/iw/iw-4.14.tar.xz
      * https://mirrors.edge.kernel.org/pub/linux/libs/security/linux-privs/libcap2/libcap-2.26.tar.xz
      * http://snapshot.debian.org/archive/debian/20180220T215051Z/pool/main/k/kexec-tools/kexec-tools_2.0.16.orig.tar.xz
      All are compressed using `pixz` and have a 16-byte block header.
      Recompressing with `xz` gives a 20-byte block header with 4 pad bytes.
    
    Due to these differences, use of `pixz` instead of `xz` is sometimes
    necessary, which is why this commit introduces these checks.
    
    Closes: #892029
    Closes: #913218
    
    Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

commit 558cf61b20e1eaba82a6869015a4d0d8e2ccc5c2
Author: Kevin Locke <kevin@kevinlocke.name>
Date:   Sun Dec 2 19:00:33 2018 -0700

    pristine-xz: Improve multi-thread detection and utilization
    
    The previous implementation only detected multi-threading when there are
    multiple blocks (and, as far as I can tell, always, since the block sum
    is always equal with or without threading in my tests).
    
    Instead, use the presence of the compressed/uncompressed size in the
    block header.  xz always omits these values when operating in
    single-threaded mode and always includes them in multi-threaded mode,
    regardless of the number of blocks or the presence of the --block-size
    and --block-list options.
    
    Only test -T2, since -T6 produces the same output.  Would like to use
    -T0, but it behaves the same as -T1 (and -T not specified) on
    single-core systems (or when invoked with single-core affinity).
    
    This also fixes an issue with git_2.13.1.orig.tar.xz which is compressed
    with -T0 -9.
    
    Fixes: #865573
    
    Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

commit 631016070d9d35314525c26a022f174ec2b66406
Author: Tomasz Buchert <tomasz@debian.org>
Date:   Fri Jan 25 23:12:05 2019 +0100

    d/control: add pixz as a dependency

commit 23946b426912dfe4d80a768c1cb952a661365b4d
Author: Tomasz Buchert <tomasz@debian.org>
Date:   Wed Jan 23 23:43:39 2019 +0100

    drop "Restrictions: needs-recommends" from tests

commit 77d4be23fb47c2164bdfffccb6aafac1c5a6bf6b
Author: Tomasz Buchert <tomasz@debian.org>
Date:   Wed Jan 23 23:39:39 2019 +0100

    move suggested dependencies to actual dependencies