openrsync

看到「(open)rsync gains include/exclude support」這篇才注意到有 OpenRsync 專案...

在 OpenRsync 的網站上是指到 OpenBSD 的 cvsweb 上：「src/usr.bin/rsync/」，不過在 GitHub 上也有一個 repository：「kristapsdz/openrsync」，裡面有提到目前應該是以 OpenBSD 內的 source code 為主：

This system has been merged into OpenBSD base. If you'd like to contribute to openrsync, please mail your patches to tech@openbsd.org. This repository is simply the OpenBSD version plus some glue for portability.

然後有也提到 OpenRsync 主要就是 license 的關係 (rsync 目前是 GPLv3)：

This is an implementation of rsync with a BSD (ISC) license. It's compatible with a modern rsync (3.1.3 is used for testing, but any supporting protocol 27 will do), but accepts only a subset of rsync's command-line arguments.

不過在一開始的報導裡面，有人反應軟體與 rsync 的相容性不太好，會搞爆 rsync：

By grey (grey) on 2021-08-31 05:17

Nice!

Albeit, the last time I was testing openrsync, I discovered I could use openrsync to reproducibly crash rsync on FreeBSD13-CURRENT on a Raspberry Pi 3 and decided rather than try to debug rsync, I would wait for openrsync to mature a bit, I'm grateful to see that it continues to progress!

就當作個記錄...

在「openrsync imported into the tree」這邊看到 openrsync 專案進入到 OpenBSD 的 source tree 內。

rsync 是使用 GPLv3 授權，這個授權剛出來的時候，幾個比較大的 BSD 的團隊都有找律師研究過，最後都是做出不要把 GPLv3 的軟體放進 source tree 的建議，但 rsync 算是很好用的工具 (尤其是在效率上)。

看起來 openrsync 這個專案主要的目的就是重新實做出 ISC license 版本的 rsync：

This is an implementation of rsync with a BSD (ISC) license. It's compatible with a modern rsync (3.1.3 is used for testing, but any supporting protocol 27 will do), but accepts only a subset of rsync's command-line arguments.

然後目前只有設計在 OpenBSD 上跑，其他平台可能需要花些時間 porting 修正相容性：

At this time, openrsync runs only on OpenBSD. If you want to port to your system (e.g. Linux, FreeBSD), read the Portability section first.

在 GitHub 上的 Git repository 只是個 mirror，真正在管理程式碼的部份還是使用 CVS：

This repository is a read-only mirror of a private CVS repository. I use it for issues and pull requests. Please do not make feature requests: I will simply close out the issue.