From 743eb65cfe9a63adccce647af37d1cf3ac303828 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sat, 16 Dec 2023 20:37:57 +0000
Subject: [PATCH] std::net::bind using -1 for openbsd which in turn sets it to
 somaxconn.

trusting platform's SOMAXCONN instead of hardcoding to 128 otherwise.
---
 library/std/src/os/unix/net/listener.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/library/std/src/os/unix/net/listener.rs b/library/std/src/os/unix/net/listener.rs
index 5be8aebc70fd5..f4da569f5857c 100644
--- a/library/std/src/os/unix/net/listener.rs
+++ b/library/std/src/os/unix/net/listener.rs
@@ -74,7 +74,15 @@ impl UnixListener {
             let inner = Socket::new_raw(libc::AF_UNIX, libc::SOCK_STREAM)?;
             let (addr, len) = sockaddr_un(path.as_ref())?;
             const backlog: libc::c_int =
-                if cfg!(any(target_os = "linux", target_os = "freebsd")) { -1 } else { 128 };
+                if cfg!(any(target_os = "linux", target_os = "freebsd", target_os = "openbsd")) {
+                    -1
+                } else if cfg!(target_os = "redox") {
+                    // redox's relibc defines as 128
+                    // FIXME: adding to libc's crate
+                    128
+                } else {
+                    libc::SOMAXCONN
+                };
 
             cvt(libc::bind(inner.as_inner().as_raw_fd(), &addr as *const _ as *const _, len as _))?;
             cvt(libc::listen(inner.as_inner().as_raw_fd(), backlog))?;