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clarify sys::unix::fd::FileDesc::drop comment (#66876)

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This commit is contained in:
Ashton Hunt 2024-07-07 09:29:16 -06:00
parent 382148d9a2
commit a0f2b41d03
1 changed files with 5 additions and 0 deletions
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library/std/src/os/fd/owned.rs
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@ -175,6 +175,11 @@ impl Drop for OwnedFd {
// the file descriptor was closed or not, and if we retried (for // the file descriptor was closed or not, and if we retried (for
// something like EINTR), we might close another valid file descriptor // something like EINTR), we might close another valid file descriptor
// opened after we closed ours. // opened after we closed ours.
// However, this is usually justified, as some of the major Unices
// do make sure to always close the FD, even when `close()` is interrupted,
// and the scenario is rare to begin with.
// Helpful link to an epic discussion by POSIX workgroup:
// http://austingroupbugs.net/view.php?id=529
#[cfg(not(target_os = "hermit"))] #[cfg(not(target_os = "hermit"))]
{ {
#[cfg(unix)] #[cfg(unix)]