Merging upstream version 1.74.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/vendor/rustix-0.37.6/src/net/wsa.rs b/vendor/rustix-0.37.6/src/net/wsa.rs
new file mode 100644
index 000000000..3367ca95c
--- /dev/null
+++ b/vendor/rustix-0.37.6/src/net/wsa.rs
@@ -0,0 +1,49 @@
+use crate::io;
+use core::mem::MaybeUninit;
+use windows_sys::Win32::Networking::WinSock::{WSACleanup, WSAGetLastError, WSAStartup, WSADATA};
+
+/// `WSAStartup()`—Initialize process-wide Windows support for sockets.
+///
+/// On Windows, it's necessary to initialize the sockets subsystem before
+/// using sockets APIs. The function performs the necessary initialization.
+///
+/// # References
+///  - [Winsock2]
+///
+/// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-wsastartup
+pub fn wsa_startup() -> io::Result<WSADATA> {
+    // Request version 2.2, which has been the latest version since far older
+    // versions of Windows than we support here. For more information about
+    // the version, see [here].
+    //
+    // [here]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-wsastartup#remarks
+    let version = 0x202;
+    let mut data = MaybeUninit::uninit();
+    unsafe {
+        let ret = WSAStartup(version, data.as_mut_ptr());
+        if ret == 0 {
+            Ok(data.assume_init())
+        } else {
+            Err(io::Errno::from_raw_os_error(WSAGetLastError()))
+        }
+    }
+}
+
+/// `WSACleanup()`—Clean up process-wide Windows support for sockets.
+///
+/// In a program where `init` is called, if sockets are no longer necessary,
+/// this function releases associated resources.
+///
+/// # References
+///  - [Winsock2]
+///
+/// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-wsacleanup
+pub fn wsa_cleanup() -> io::Result<()> {
+    unsafe {
+        if WSACleanup() == 0 {
+            Ok(())
+        } else {
+            Err(io::Errno::from_raw_os_error(WSAGetLastError()))
+        }
+    }
+}