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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
commit9918693037dce8aa4bb6f08741b6812923486c18 (patch)
tree21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /vendor/rustix/src/termios
parentReleasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff)
downloadrustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz
rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/rustix/src/termios')
-rw-r--r--vendor/rustix/src/termios/tc.rs8
1 files changed, 7 insertions, 1 deletions
diff --git a/vendor/rustix/src/termios/tc.rs b/vendor/rustix/src/termios/tc.rs
index cd5902c1a..58ba2c220 100644
--- a/vendor/rustix/src/termios/tc.rs
+++ b/vendor/rustix/src/termios/tc.rs
@@ -1,9 +1,10 @@
use crate::fd::AsFd;
-use crate::pid::Pid;
#[cfg(not(target_os = "espidf"))]
use crate::termios::{Action, OptionalActions, QueueSelector, Termios, Winsize};
use crate::{backend, io};
+pub use crate::pid::Pid;
+
/// `tcgetattr(fd)`—Get terminal attributes.
///
/// Also known as the `TCGETS` (or `TCGETS2` on Linux) operation with `ioctl`.
@@ -44,6 +45,11 @@ pub fn tcgetwinsize<Fd: AsFd>(fd: Fd) -> io::Result<Winsize> {
///
/// Also known as the `TIOCGPGRP` operation with `ioctl`.
///
+/// On Linux, if `fd` is a pseudo-terminal, the underlying system call here can
+/// return a pid of 0, which rustix's `Pid` type doesn't support. So rustix
+/// instead handles this case by failing with [`io::Errno::OPNOTSUPP`] if the
+/// pid is 0.
+///
/// # References
/// - [POSIX]
/// - [Linux]