From 918258ff1523a6c976304f114a3bde5cd77cd9ef Mon Sep 17 00:00:00 2001
From: David CARLIER <devnexen@gmail.com>
Date: Sun, 21 Aug 2022 06:58:51 +0100
Subject: [PATCH] net listen backlog update, follow-up from #97963.

FreeBSD and using system limit instead for others.
---
 library/std/src/os/unix/net/listener.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/library/std/src/os/unix/net/listener.rs b/library/std/src/os/unix/net/listener.rs
index 3b2601e755a97..eeef5882234fa 100644
--- a/library/std/src/os/unix/net/listener.rs
+++ b/library/std/src/os/unix/net/listener.rs
@@ -73,10 +73,11 @@ impl UnixListener {
         unsafe {
             let inner = Socket::new_raw(libc::AF_UNIX, libc::SOCK_STREAM)?;
             let (addr, len) = sockaddr_un(path.as_ref())?;
-            #[cfg(target_os = "linux")]
-            const backlog: libc::c_int = -1;
-            #[cfg(not(target_os = "linux"))]
-            const backlog: libc::c_int = 128;
+            const backlog: libc::c_int = if cfg!(any(target_os = "linux", target_os = "freebsd")) {
+                -1
+            } 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))?;