Broken link to sys_read_entropy

[WhyNotHugo]

There's a broken link in the docs:

getrandom/src/lib.rs

Line 183 in 8c8ca32

//! [`sys_read_entropy`]: https://hermitcore.github.io/libhermit-rs/hermit/fn.sys_read_entropy.html

I was going to send a PR instead of a patch, but it looks like this documentation is gone and not available online elsewhere.

Looking around I get an impression that it's been deprecated entirely? E.g.: https://github.com/hermitcore/, https://github.com/hermit-os/libhermit#deprecation-notice

[josephlr]

Seems like the right doc is https://docs.rs/hermit-abi/0.3.3/hermit_abi/fn.read_entropy.html

[WhyNotHugo]

Indeed it is, thanks.

[newpavlov]

We do not rely on the hermit-abi crate, so I think it would be better to link the relevant source code directly.

[josephlr]

Good point, seems like https://github.com/hermit-os/kernel/blob/315f58ff5efc81d9bf0618af85a59963ff55f8b1/src/syscalls/entropy.rs#L47-L55 should work.