[Windows] Way to make child processes inherits parent attributes?

[tesuji]

Rust is using it internally: https://github.com/rust-lang/rust/search?q=security_attributes&unscoped_q=security_attributes
But rust doesn't expose that to public APIs.
That makes people fall into unsafe Rust with CreateFileW and CreateFile2.

[tesuji]

Current usecases:

• https://github.com/rust-lang/rustup/blob/93e6d7dd0fe59ed69d8fde776301bc1b097ffccb/src/cli/self_update.rs#L966

• rust/src/libstd/sys/windows/process.rs

  Line 283 in 150322f

  let mut sa = c::SECURITY_ATTRIBUTES {

• rust/src/libstd/sys/windows/pipe.rs

  Line 142 in d8bdb3f

  let mut sa = c::SECURITY_ATTRIBUTES {

[tesuji]

I changed the feature request. Does this sound more plausible?
cc @repnop (oops, wrong guy) for Windows advices.

[tesuji]

cc @retep998

[retep998]

What you're proposing is adding the security_attributes method to the public API exposed through OpenOptionsExt on Windows? If so, what should the type signature look like?

[tesuji]

adding the security_attributes method

Nope. I just want a way to make child processes inherits its parent attribute.

[retep998]

Oh, you want to specify that a handle should be inherited by a child process. Marking the handle as inheritable is actually the wrong thing to do. The correct approach is to explicitly tell CreateProcess which handles we want to inherit: #38227 . Once that is implemented, we can add a windows specific CommandExt method to specify arbitrary handles to be inherited.

[Dylan-DPC]

Closing this as there is no clear path on what's being proposed and the issue has been stalled as well