hare

commit dfa3a0becad55306a168c28cd7d95a7a4c81c047
parent 4cf3fe287657d4ff9668640611fa84a7af052662
Author: Drew DeVault <sir@cmpwn.com>
Date:   Mon, 21 Jun 2021 14:20:45 -0400

net::udp: add socket_for

Signed-off-by: Drew DeVault <sir@cmpwn.com>

Diffstat:
M
net/udp/+linux.ha
 | 
9
+++++++++

1 file changed, 9 insertions(+), 0 deletions(-)
diff --git a/net/udp/+linux.ha b/net/udp/+linux.ha
@@ -37,6 +37,15 @@ export fn stream(sock: socket) *io::stream = {
 		io::mode::READ | io::mode::WRITE);
 };
 
+// Obtains a [[socket]] for a given [[io::stream]], or returns void if it is not
+// a socket stream.
+export fn socket_for(stream: *io::stream) (socket | void) = {
+	return match (os::streamfd(stream, false)) {
+		fd: int => fd: socket,
+		void => void,
+	};
+};
+
 // Creates a UDP socket bound to an interface.
 export fn listen(
 	addr: ip::addr,