timeout (uu_timeout) for Windows

[Azathothas]

Hi, is it possible to fix timeout (uu_timeout) so that it can also build & work on Windows ?

Currently, it fails:

  Compiling uu_timeout v0.0.26 (C:\Users\runneradmin\AppData\Local\Temp\toolpacks\toolpacks_jpzxhinoezg_AMD64-Windows_NT\coreutils\src\uu\timeout)
error[E0433]: failed to resolve: could not find `unix` in `os`
  --> src\uu\timeout\src/timeout.rs:12:14
   |
12 | use std::os::unix::process::ExitStatusExt;
   |              ^^^^ could not find `unix` in `os`
   |
note: found an item that was configured out
  --> /rustc/7cf61ebde7b22796c69757901dd346d0fe70bd97\library\std\src\os\mod.rs:26:9
note: found an item that was configured out
  --> /rustc/7cf61ebde7b22796c69757901dd346d0fe70bd97\library\std\src\os\mod.rs:64:9

error[E0432]: unresolved import `uucore::process`
  --> src\uu\timeout\src/timeout.rs:17:13
   |
17 | use uucore::process::ChildExt;
   |             ^^^^^^^ could not find `process` in `uucore`

error[E0432]: unresolved import `uucore::signals`
  --> src\uu\timeout\src/timeout.rs:24:5
   |
24 |     signals::{signal_by_name_or_value, signal_name_by_value},
   |     ^^^^^^^ could not find `signals` in `uucore`

error[E0433]: failed to resolve: could not find `signals` in `uucore`
  --> src\uu\timeout\src/timeout.rs:68:26
   |
68 |             _ => uucore::signals::signal_by_name_or_value("TERM").unwrap(),
   |                          ^^^^^^^ could not find `signals` in `uucore`
   |
note: found an item that was configured out
  --> C:\Users\runneradmin\AppData\Local\Temp\toolpacks\toolpacks_jpzxhinoezg_AMD64-Windows_NT\coreutils\src\uucore\src/lib/lib.rs:77:26
   |
77 | pub use crate::features::signals;
   |                          ^^^^^^^

error[E0433]: failed to resolve: could not find `sys` in `nix`
   --> src\uu\timeout\src/timeout.rs:185:14
    |
185 |         nix::sys::signal::signal(
    |              ^^^ could not find `sys` in `nix`

error[E0433]: failed to resolve: could not find `sys` in `nix`
   --> src\uu\timeout\src/timeout.rs:186:18
    |
186 |             nix::sys::signal::Signal::SIGCHLD,
    |                  ^^^ could not find `sys` in `nix`

error[E0433]: failed to resolve: could not find `sys` in `nix`
   --> src\uu\timeout\src/timeout.rs:187:18
    |
187 |             nix::sys::signal::SigHandler::SigDfl,
    |                  ^^^ could not find `sys` in `nix`

error[E0425]: cannot find function `setpgid` in crate `libc`
   --> src\uu\timeout\src/timeout.rs:302:24
    |
302 |         unsafe { libc::setpgid(0, 0) };
    |                        ^^^^^^^ help: a function with a similar name exists: `getpid`
    |
   ::: C:\Users\runneradmin\.cargo\registry\src\index.crates.io-6f17d22bba15001f\libc-0.2.153\src\windows\mod.rs:491:5
    |
491 |     pub fn getpid() -> ::c_int;
    |     -------------------------- similarly named function `getpid` defined here

error[E0599]: no method named `send_signal` found for mutable reference `&mut Child` in the current scope
   --> src\uu\timeout\src/timeout.rs:206:25
    |
206 |         let _ = process.send_signal(signal);
    |                         ^^^^^^^^^^^ method not found in `&mut Child`

error[E0599]: no method named `send_signal_group` found for mutable reference `&mut Child` in the current scope
   --> src\uu\timeout\src/timeout.rs:208:25
    |
208 |         let _ = process.send_signal_group(signal);
    |                         ^^^^^^^^^^^^^^^^^ method not found in `&mut Child`

error[E0599]: no method named `send_signal_group` found for mutable reference `&mut Child` in the current scope
   --> src\uu\timeout\src/timeout.rs:212:25
    |
212 |             _ = process.send_signal_group(continued_signal);
    |                         ^^^^^^^^^^^^^^^^^ method not found in `&mut Child`

error[E0599]: no method named `wait_or_timeout` found for mutable reference `&mut Child` in the current scope
   --> src\uu\timeout\src/timeout.rs:245:19
    |
245 |     match process.wait_or_timeout(duration) {
    |                   ^^^^^^^^^^^^^^^ method not found in `&mut Child`

error[E0599]: no method named `wait_or_timeout` found for mutable reference `&mut Child` in the current scope
   --> src\uu\timeout\src/timeout.rs:335:19
    |
335 |     match process.wait_or_timeout(duration) {
    |                   ^^^^^^^^^^^^^^^ method not found in `&mut Child`

error[E0599]: no method named `signal` found for struct `std::process::ExitStatus` in the current scope
   --> src\uu\timeout\src/timeout.rs:349:57
    |
349 |                         } else if let Some(sc) = status.signal() {
    |                                                         ^^^^^^ method not found in `ExitStatus`

Some errors have detailed explanations: E0425, E0432, E0433, E0599.
For more information about an error, try `rustc --explain E0425`.
error: could not compile `uu_timeout` (lib) due to 14 previous errors

[Azathothas]

Not sure if this helps,
but busybox-w32 already has timeout : https://github.com/rmyorston/busybox-w32/blob/master/coreutils/timeout.c
I tested and that one works, so hopefully, it should be trivial to patch https://github.com/uutils/coreutils/tree/main/src/uu/timeout as well.