Statfs fs MAGIC constants are not available for target_os = "android"

[flxo]

The fs type constants defined in src/sys/statfs are guard by #[cfg(all(target_os = "linux", not(target_env = "musl")))] and therefore not available for target_os = "android. That hit me while patching cgroups-rs for Android and adding the target_os = "android" guard here

Any change to get this updated to #[cfg(any(all(target_os = "linux", not(target_env = "musl")), target_os = "android"))]?
If yes I can prepare a PR.

Thanks!

[asomers]

It depends. Are those constants actually defined on Android? If they are, are they defined in rust's libc? If the answer to the first question is "no", then there's nothing for you to do. If yes, but the answer to the second question is no, then you should submit a PR to https://github.com/rust-lang/libc first, and to Nix second. If the answer to both questions is yes, then feel free to submit a PR.

[flxo]

Thanks @asomers. Looks like the constants are enabled in libc for target_os = "android" here.

I'll send a PR with the updated guards. I will also sync the constants - looks like there are more in libc than in nix.