Auto merge of #43459 - ids1024:asrawfd, r=alexcrichton

Implement AsRawFd for Stdin, Stdout, and Stderr

https://github.com/rust-lang/rfcs/issues/2074

1 files changed, 16 insertions, 0 deletions

diff --git a/src/libstd/sys/redox/ext/io.rs b/src/libstd/sys/redox/ext/io.rs
index 8e7cc593dbd..c4d99568c55 100644
--- a/src/libstd/sys/redox/ext/io.rs
+++ b/src/libstd/sys/redox/ext/io.rs
@@ -15,6 +15,7 @@
 use fs;
 use net;
 use sys;
+use io;
 use sys_common::{self, AsInner, FromInner, IntoInner};
 
 /// Raw file descriptors.
@@ -109,6 +110,21 @@ impl AsRawFd for net::UdpSocket {
     }
 }
 
+#[stable(feature = "asraw_stdio", since = "1.21.0")]
+impl AsRawFd for io::Stdin {
+    fn as_raw_fd(&self) -> RawFd { 0 }
+}
+
+#[stable(feature = "asraw_stdio", since = "1.21.0")]
+impl AsRawFd for io::Stdout {
+    fn as_raw_fd(&self) -> RawFd { 1 }
+}
+
+#[stable(feature = "asraw_stdio", since = "1.21.0")]
+impl AsRawFd for io::Stderr {
+    fn as_raw_fd(&self) -> RawFd { 2 }
+}
+
 #[stable(feature = "from_raw_os", since = "1.1.0")]
 impl FromRawFd for net::TcpStream {
     unsafe fn from_raw_fd(fd: RawFd) -> net::TcpStream {