https://github.com/remram44/rpztar
Special tar utility for reprounzip-docker
https://github.com/remram44/rpztar
reprozip
Last synced: 2 months ago
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Special tar utility for reprounzip-docker
- Host: GitHub
- URL: https://github.com/remram44/rpztar
- Owner: remram44
- License: mit
- Created: 2021-06-22T20:02:02.000Z (almost 4 years ago)
- Default Branch: master
- Last Pushed: 2024-12-17T19:57:02.000Z (6 months ago)
- Last Synced: 2025-04-06T08:16:09.670Z (2 months ago)
- Topics: reprozip
- Language: Rust
- Homepage:
- Size: 17.6 KB
- Stars: 1
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
custom tar -xf replacement as a static binary
What is this
------------
This is a simple Rust program that extracts a list of file from a tar archive.
It is meant to be used in [ReproZip](https://github.com/VIDA-NYU/reprozip) and
is probably not generally useful.
The program takes as argument the archive and a list of null-byte-delimited
filenames. Additionally it expects that paths in the archive are prefixed by
`DATA/` and ignores paths that aren't. It always extracts to the current
directory (cwd).
Why is this needed?
-------------------
tar behaves the way you expect when extracting files over files (replace) or
directories over directories (merge), but a problem arise when extracting files
over directories. Either it will fail (tar won't be able to remove a directory
that's not empty) or you use `--recursive-unlink` (but then extracting
directories over directories will delete too, and not merge).
This is needed by the [ReproZip](https://github.com/ViDA-NYU/reprozip) project.
The reprounzip component builds virtual machines and unpacks the files needed
to reproduce an experiment. In some cases the base image's layout is
significantly different from the experiment's files: e.g. /lib might be a
directory or a symlink depending on your distribution.
Reprounzip downloads the static binaries from this project's releases page:
https://github.com/remram44/rpztar/releases/download/v1/rpzsudo-{arch}
where `{arch}` is one of: `i686`, `x86_64` (`uname -m`).