libarchive
ck
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libarchive | ck | |
---|---|---|
33 | 7 | |
2,870 | 2,293 | |
4.1% | 0.9% | |
8.8 | 6.9 | |
6 days ago | 11 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
libarchive
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The XZ attack and timeline
29. October 2021 At this point Jia Tan pops up, and the first thing we see from him is an innocuous patch to the xz repository, and while a lot of people believe he started out trying his luck with another library also known as libarchive, this is not the case, I would bet it’s more of a backup looking at the dates, being that there are a few days in between as shown in this commit.
- Zip entry size unset now honors user requested compression level
- Suspicious libarchive pull request
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Backdoor in upstream xz/liblzma leading to SSH server compromise
Potentially malicious commit by same author on libarchive: https://github.com/libarchive/libarchive/pull/1609
- WinRAR musste shady werden.
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Making Amiga IFF Thumbnails Work in Linux
Full agreement, and with the addition of xpk¹/xfd² as natural extensions to that extensibility too. I see things like xfd supporting xz¹, and I'm simultaneously amazed that it exists and happy that I don't need to do xz {,de}compression on 68k ;)
I guess we have something similar-ish with libarchive⁴, but nobody(including me) has pushed the extra mile to get file dialogs to support random compression and decompression formats.
Beyond OT: I didn't realise how much stuff was still going on at aminet, but I love love LOVE that people are still dropping new car sets for Geoff Crammond's F1GP.
¹ http://aminet.net/package/util/pack/xpk_User
² http://aminet.net/package/util/pack/xfdmaster
³ http://aminet.net/package/util/pack/xfd_lzma.lha
⁴ https://www.libarchive.org/
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WinRAR zero-day exploited since April to hack trading accounts
I don't have a preview channel install handy to check, but apparently they're using libarchive so here's the full list assuming they expose everything it supports:
https://github.com/libarchive/libarchive/wiki/LibarchiveForm...
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Announcing Windows 11 Insider Preview Build 23493 for the Dev Channel
As announced at the Build conference back in May, this build adds native support for reading additional archive file formats using the libarchive open-source project such as
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Poor winrar
LibarchiveFormats · libarchive/libarchive Wiki · GitHub
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Windows 11 getting native support for 7-Zip, RAR, and GZ archives
Seems what they're using is BSD-liscensed: https://github.com/libarchive/libarchive/wiki
ck
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Falsehoods programmers believe about undefined behavior
Maybe I'm missing something, but x is not volatile and the compiler is free to assume that it is not modified concurrently outside the bounds of C's memory model. Compilers can and do hoist out loop invariants, and https://github.com/concurrencykit/ck/commit/b54ae5c4ace9b94442bbb46858449069f566d269 seems like an example of compilers doing what you say they don't. What am I missing?
- Concurrency Kit
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A portable, license-free, lock-free data structure library written in C.
Recommend checking out http://concurrencykit.org instead.
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Does a thread have a better chance of acquiring a mutex if it's just in time? Or if it's been in the queue? Neither?
If you're interested in how other approaches work, or how one achieves concurrency on shared mutable state without mutual exclusion, would recommend checking out concurrency kit.
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Libdill: Structured Concurrency for C (2016)
There are plenty of practical solutions to the safe memory reclamation problem in C. The language just doesn't force one on you.
From epoch-based reclamation (https://github.com/concurrencykit/ck/blob/master/include/ck_..., especially with the multiplexing extension to Fraser's classic scheme), to quiescence schemes (https://liburcu.org/), or hazard pointers (https://github.com/facebook/folly/blob/master/folly/synchron..., or https://pvk.ca/Blog/2020/07/07/flatter-wait-free-hazard-poin...)... or even simple using a type-stable (https://www.usenix.org/legacy/publications/library/proceedin...) memory allocator.
In my experience, it's easier to write code that is resilient to hiccups in C than in Java. Solving SMR with GC only offers something close to lock-freedom when you can guarantee global GC pauses are short enough... and common techniques to bound pauses, like explicitly managed freelists land you back in the same problem space as C.
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C Deep
ck - Concurrency primitives, safe memory reclamation mechanisms and non-blocking data structures. BSD-2-Clause
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Super-expressive – Write regex in natural language
Indeed they do, https://github.com/concurrencykit/ck
What are some alternatives?
ZLib - A massively spiffy yet delicately unobtrusive compression library.
libcds - A C++ library of Concurrent Data Structures
7z - Because 7-zip source code was in a 7z archive [mirror]
libdill - Structured concurrency in C
p7zip - A new p7zip fork with additional codecs and improvements (forked from https://sourceforge.net/projects/sevenzip/ AND https://sourceforge.net/projects/p7zip/).
moodycamel - A fast multi-producer, multi-consumer lock-free concurrent queue for C++11
fpart - Sort files and pack them into partitions
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
Klib - A standalone and lightweight C library
HPX - The C++ Standard Library for Parallelism and Concurrency
pixz - Parallel, indexed xz compressor
CUB - THIS REPOSITORY HAS MOVED TO github.com/nvidia/cub, WHICH IS AUTOMATICALLY MIRRORED HERE.