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unix::ExitStatusExt: Correct reference to _exit system call

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As discussed here
 https://github.com/rust-lang/rust/pull/88300#issuecomment-936085371

exit is (conventionally) a library function, with _exit being the
actual system call.

I have checked the other references and they say "if the process
terminated by calling `exti`".  I think despite the slight
imprecision (strictly, it should read iff ... `_exit`), this is
clearer.  Anyone who knows about the distinction between `exit` and
`_exit` will not be confused.

`_exit` is the correct traditional name for the system call, despite
Linux calling it `exit_group` or `exit`:
  https://www.freebsd.org/cgi/man.cgi?query=_exit&sektion=2&n=1

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
This commit is contained in:
Ian Jackson 2021-11-08 17:28:02 +00:00
parent 3e3890c9d4
commit 79e52b3f1e
1 changed files with 1 additions and 1 deletions
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2
library/std/src/os/unix/process.rs
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@ -207,7 +207,7 @@ impl CommandExt for process::Command {
/// [`ExitStatusError`](process::ExitStatusError).
///
/// On Unix, `ExitStatus` **does not necessarily represent an exit status**, as
/// passed to the `exit` system call or returned by
/// passed to the `_exit` system call or returned by
/// [`ExitStatus::code()`](crate::process::ExitStatus::code). It represents **any wait status**
/// as returned by one of the `wait` family of system
/// calls.