I am not seeing pledge on Alpine Linux in edge. Have people been testing Pledge on Linux? Did I perhaps misunderstand the risk of using Openrsync without pledge? Or is this article just for OpenBSD users?
there might be newer stuff in linux land now i see comments about landlock but i assume those will build on the linux primitives rather than whole new ones. - total assumption there but it would seem logical to reuse rather than make new.
part of likely what they mean by 'mess' is that its all over the place. many different ways to try and lock things down. hard to pick what is best etc. without thoroughly diving into the different subsystems entirely. (as opposed to just have 1 or 2 relatively simple system calls)
The list of syscalls any code anywhere in the system calls is not a published contract with any guarantees.
> You could just
… is doing some heavy lifting here. "You could just" all but guarantee that your program will break in a couple of years for all users who do the responsible thing?
Sure, if you're building an appliance with a support contract, where you control everything, then that's doable. Servers/desktops/laptops, not so much.
> Without them, your system accepts arbitrary data from the public network.
Neither of these features change if you are accepting arbitrary data from the public network. They limit what an exploited process can do. It's explained properly in the 'Security' section, so I'm not sure where this came from.
Under Portability [1] I don't have access to update that repo. I deleted my accounts when Microsoft took over.
> The only officially-supported operating system is OpenBSD, as this has considerable security features.
And below your quote:
> This is possible (I think?) with FreeBSD's Capsicum, but Linux's security facilities are a mess, and will take an expert hand to properly secure.
It is portable in the sense that it compiles and runs, not in the sense that it has the same security features.
I'd love to see pledge/unveil on (upstream) Linux - but I'm not holding my breath.
There is Landlock now, I believe it would be possible to implement unveil and pledge on top of that.
There was a discussion here about it a few years ago: https://news.ycombinator.com/item?id=32096801
Interesting choice of word
To be honest, I feel like I still don't really know much about who she really is or what real political work she's doing recently, if any. And I kinda don't wanna know anyway; I don't wanna play political blacklist enforcer.
But I understand your reaction now. :-\
https://clehaxze.tw/gemlog/2022/04-02-landlock-unveil-experi...