Rename BorrowedFd::borrow_raw_fd to BorrowedFd::borrow_raw.

Also, rename `BorrowedHandle::borrow_raw_handle` and
`BorrowedSocket::borrow_raw_socket` to `BorrowedHandle::borrow_raw` and
`BorrowedSocket::borrow_raw`.

This is just a minor rename to reduce redundancy in the user code calling
these functions, and to eliminate an inessential difference between
`BorrowedFd` code and `BorrowedHandle`/`BorrowedSocket` code.

While here, add a simple test exercising `BorrowedFd::borrow_raw_fd`.

library/std/src/os/fd/mod.rs

@@ -11,3 +11,6 @@ pub mod owned;
 
 // Implementations for `AsRawFd` etc. for network types.
 mod net;
+
+#[cfg(test)]
+mod tests;

library/std/src/os/fd/owned.rs

@@ -62,7 +62,7 @@ impl BorrowedFd<'_> {
     /// the returned `BorrowedFd`, and it must not have the value `-1`.
     #[inline]
     #[unstable(feature = "io_safety", issue = "87074")]
-    pub unsafe fn borrow_raw_fd(fd: RawFd) -> Self {
+    pub unsafe fn borrow_raw(fd: RawFd) -> Self {
         assert_ne!(fd, u32::MAX as RawFd);
         // SAFETY: we just asserted that the value is in the valid range and isn't `-1` (the only value bigger than `0xFF_FF_FF_FE` unsigned)
         unsafe { Self { fd, _phantom: PhantomData } }
@@ -215,7 +215,7 @@ impl AsFd for OwnedFd {
         // Safety: `OwnedFd` and `BorrowedFd` have the same validity
         // invariants, and the `BorrowdFd` is bounded by the lifetime
         // of `&self`.
-        unsafe { BorrowedFd::borrow_raw_fd(self.as_raw_fd()) }
+        unsafe { BorrowedFd::borrow_raw(self.as_raw_fd()) }
     }
 }
 

library/std/src/os/fd/tests.rs

@@ -0,0 +1,34 @@
+#[cfg(any(unix, target_os = "wasi"))]
+#[test]
+fn test_raw_fd() {
+    #[cfg(unix)]
+    use crate::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd, BorrowedFd};
+    #[cfg(target_os = "wasi")]
+    use crate::os::wasi::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd, BorrowedFd};
+
+    let raw_fd: RawFd = crate::io::stdin().as_raw_fd();
+
+    let stdin_as_file = unsafe { crate::fs::File::from_raw_fd(raw_fd) };
+    assert_eq!(stdin_as_file.as_raw_fd(), raw_fd);
+    assert_eq!(unsafe { BorrowedFd::borrow_raw(raw_fd).as_raw_fd() }, raw_fd);
+    assert_eq!(stdin_as_file.into_raw_fd(), 0);
+}
+
+#[cfg(any(unix, target_os = "wasi"))]
+#[test]
+fn test_fd() {
+    #[cfg(unix)]
+    use crate::os::unix::io::{AsFd, BorrowedFd, OwnedFd, FromRawFd, IntoRawFd, RawFd, AsRawFd};
+    #[cfg(target_os = "wasi")]
+    use crate::os::wasi::io::{AsFd, BorrowedFd, OwnedFd, FromRawFd, IntoRawFd, RawFd, AsRawFd};
+
+    let stdin = crate::io::stdin();
+    let fd: BorrowedFd<'_> = stdin.as_fd();
+    let raw_fd: RawFd = fd.as_raw_fd();
+    let owned_fd: OwnedFd = unsafe { OwnedFd::from_raw_fd(raw_fd) };
+
+    let stdin_as_file = crate::fs::File::from(owned_fd);
+
+    assert_eq!(stdin_as_file.as_fd().as_raw_fd(), raw_fd);
+    assert_eq!(Into::<OwnedFd>::into(stdin_as_file).into_raw_fd(), raw_fd);
+}

library/std/src/os/windows/io/handle.rs

@@ -131,7 +131,7 @@ impl BorrowedHandle<'_> {
     /// [here]: https://devblogs.microsoft.com/oldnewthing/20040302-00/?p=40443
     #[inline]
     #[unstable(feature = "io_safety", issue = "87074")]
-    pub unsafe fn borrow_raw_handle(handle: RawHandle) -> Self {
+    pub unsafe fn borrow_raw(handle: RawHandle) -> Self {
         Self { handle, _phantom: PhantomData }
     }
 }
@@ -329,7 +329,7 @@ impl AsHandle for OwnedHandle {
         // Safety: `OwnedHandle` and `BorrowedHandle` have the same validity
         // invariants, and the `BorrowdHandle` is bounded by the lifetime
         // of `&self`.
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
@@ -357,49 +357,49 @@ impl From<OwnedHandle> for fs::File {
 impl AsHandle for crate::io::Stdin {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl<'a> AsHandle for crate::io::StdinLock<'a> {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl AsHandle for crate::io::Stdout {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl<'a> AsHandle for crate::io::StdoutLock<'a> {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl AsHandle for crate::io::Stderr {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl<'a> AsHandle for crate::io::StderrLock<'a> {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
 impl AsHandle for crate::process::ChildStdin {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
@@ -413,7 +413,7 @@ impl From<crate::process::ChildStdin> for OwnedHandle {
 impl AsHandle for crate::process::ChildStdout {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
@@ -427,7 +427,7 @@ impl From<crate::process::ChildStdout> for OwnedHandle {
 impl AsHandle for crate::process::ChildStderr {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 
@@ -441,7 +441,7 @@ impl From<crate::process::ChildStderr> for OwnedHandle {
 impl<T> AsHandle for crate::thread::JoinHandle<T> {
     #[inline]
     fn as_handle(&self) -> BorrowedHandle<'_> {
-        unsafe { BorrowedHandle::borrow_raw_handle(self.as_raw_handle()) }
+        unsafe { BorrowedHandle::borrow_raw(self.as_raw_handle()) }
     }
 }
 

library/std/src/os/windows/io/socket.rs

@@ -67,7 +67,7 @@ impl BorrowedSocket<'_> {
     /// `INVALID_SOCKET`.
     #[inline]
     #[unstable(feature = "io_safety", issue = "87074")]
-    pub unsafe fn borrow_raw_socket(socket: RawSocket) -> Self {
+    pub unsafe fn borrow_raw(socket: RawSocket) -> Self {
         debug_assert_ne!(socket, c::INVALID_SOCKET as RawSocket);
         Self { socket, _phantom: PhantomData }
     }
@@ -223,14 +223,14 @@ impl AsSocket for OwnedSocket {
         // Safety: `OwnedSocket` and `BorrowedSocket` have the same validity
         // invariants, and the `BorrowdSocket` is bounded by the lifetime
         // of `&self`.
-        unsafe { BorrowedSocket::borrow_raw_socket(self.as_raw_socket()) }
+        unsafe { BorrowedSocket::borrow_raw(self.as_raw_socket()) }
     }
 }
 
 impl AsSocket for crate::net::TcpStream {
     #[inline]
     fn as_socket(&self) -> BorrowedSocket<'_> {
-        unsafe { BorrowedSocket::borrow_raw_socket(self.as_raw_socket()) }
+        unsafe { BorrowedSocket::borrow_raw(self.as_raw_socket()) }
     }
 }
 
@@ -251,7 +251,7 @@ impl From<OwnedSocket> for crate::net::TcpStream {
 impl AsSocket for crate::net::TcpListener {
     #[inline]
     fn as_socket(&self) -> BorrowedSocket<'_> {
-        unsafe { BorrowedSocket::borrow_raw_socket(self.as_raw_socket()) }
+        unsafe { BorrowedSocket::borrow_raw(self.as_raw_socket()) }
     }
 }
 
@@ -272,7 +272,7 @@ impl From<OwnedSocket> for crate::net::TcpListener {
 impl AsSocket for crate::net::UdpSocket {
     #[inline]
     fn as_socket(&self) -> BorrowedSocket<'_> {
-        unsafe { BorrowedSocket::borrow_raw_socket(self.as_raw_socket()) }
+        unsafe { BorrowedSocket::borrow_raw(self.as_raw_socket()) }
     }
 }
 

library/std/src/sys/unix/stdio.rs

@@ -96,7 +96,7 @@ pub fn panic_output() -> Option<impl io::Write> {
 impl AsFd for io::Stdin {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDIN_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDIN_FILENO) }
     }
 }
 
@@ -104,7 +104,7 @@ impl AsFd for io::Stdin {
 impl<'a> AsFd for io::StdinLock<'a> {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDIN_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDIN_FILENO) }
     }
 }
 
@@ -112,7 +112,7 @@ impl<'a> AsFd for io::StdinLock<'a> {
 impl AsFd for io::Stdout {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDOUT_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDOUT_FILENO) }
     }
 }
 
@@ -120,7 +120,7 @@ impl AsFd for io::Stdout {
 impl<'a> AsFd for io::StdoutLock<'a> {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDOUT_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDOUT_FILENO) }
     }
 }
 
@@ -128,7 +128,7 @@ impl<'a> AsFd for io::StdoutLock<'a> {
 impl AsFd for io::Stderr {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDERR_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDERR_FILENO) }
     }
 }
 
@@ -136,6 +136,6 @@ impl AsFd for io::Stderr {
 impl<'a> AsFd for io::StderrLock<'a> {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
-        unsafe { BorrowedFd::borrow_raw_fd(libc::STDERR_FILENO) }
+        unsafe { BorrowedFd::borrow_raw(libc::STDERR_FILENO) }
     }
 }