From c89df809b9ae2dd0c36071544aced320120d4a9d Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 7 Jan 2026 14:41:38 -0800
Subject: [PATCH] goodbye posix.listen

see #6600
---
 lib/std/os/linux/IoUring/test.zig | 11 +++++++++--
 lib/std/posix.zig                 | 21 ---------------------
 2 files changed, 9 insertions(+), 23 deletions(-)

diff --git a/lib/std/os/linux/IoUring/test.zig b/lib/std/os/linux/IoUring/test.zig
index 03477fb882..adebad9180 100644
--- a/lib/std/os/linux/IoUring/test.zig
+++ b/lib/std/os/linux/IoUring/test.zig
@@ -1037,7 +1037,7 @@ test "shutdown" {
         defer posix.close(server);
         try posix.setsockopt(server, posix.SOL.SOCKET, posix.SO.REUSEADDR, &mem.toBytes(@as(c_int, 1)));
         try bind(server, addrAny(&address), @sizeOf(linux.sockaddr.in));
-        try posix.listen(server, 1);
+        try listen(server, 1);
 
         // set address to the OS-chosen IP/port.
         var slen: posix.socklen_t = @sizeOf(linux.sockaddr.in);
@@ -2662,7 +2662,7 @@ fn createListenerSocket(address: *linux.sockaddr.in) !posix.socket_t {
 
     try posix.setsockopt(listener_socket, posix.SOL.SOCKET, posix.SO.REUSEADDR, &mem.toBytes(@as(c_int, 1)));
     try bind(listener_socket, addrAny(address), @sizeOf(linux.sockaddr.in));
-    try posix.listen(listener_socket, kernel_backlog);
+    try listen(listener_socket, kernel_backlog);
 
     // set address to the OS-chosen IP/port.
     var slen: posix.socklen_t = @sizeOf(linux.sockaddr.in);
@@ -2710,3 +2710,10 @@ fn bind(sock: posix.socket_t, addr: *const posix.sockaddr, len: posix.socklen_t)
         else => return error.BindFailure,
     }
 }
+
+fn listen(sock: posix.socket_t, backlog: u31) !void {
+    switch (posix.errno(posix.system.listen(sock, backlog))) {
+        .SUCCESS => return,
+        else => return error.ListenFailure,
+    }
+}
diff --git a/lib/std/posix.zig b/lib/std/posix.zig
index 69a26ee202..6fbad51263 100644
--- a/lib/std/posix.zig
+++ b/lib/std/posix.zig
@@ -619,27 +619,6 @@ pub fn socketpair(domain: u32, socket_type: u32, protocol: u32) SocketError![2]s
     }
 }
 
-pub const ListenError = error{
-    FileDescriptorNotASocket,
-    OperationUnsupported,
-} || std.Io.net.IpAddress.ListenError || std.Io.net.UnixAddress.ListenError;
-
-pub fn listen(sock: socket_t, backlog: u31) ListenError!void {
-    if (native_os == .windows) {
-        @compileError("use std.Io instead");
-    } else {
-        const rc = system.listen(sock, backlog);
-        switch (errno(rc)) {
-            .SUCCESS => return,
-            .ADDRINUSE => return error.AddressInUse,
-            .BADF => unreachable,
-            .NOTSOCK => return error.FileDescriptorNotASocket,
-            .OPNOTSUPP => return error.OperationUnsupported,
-            else => |err| return unexpectedErrno(err),
-        }
-    }
-}
-
 pub const AcceptError = std.Io.net.Server.AcceptError;
 
 pub fn accept(