From c84e20a2968f70474d3d8fc1c3701dd2b99d5ae3 Mon Sep 17 00:00:00 2001
From: Klemens Nanni <kn@openbsd.org>
Date: Sat, 11 Mar 2023 22:23:44 +0400
Subject: [PATCH] Fix SO_PEERCRED usage on OpenBSD

getsockopt(2) documents `struct sockpeercred` with `SO_PEERCRED`.
(`struct ucred` does exist, but is incompatible to the Linux version.)
---
 src/nix-daemon/nix-daemon.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/nix-daemon/nix-daemon.cc b/src/nix-daemon/nix-daemon.cc
index 7a5cb9a37..87ad4e949 100644
--- a/src/nix-daemon/nix-daemon.cc
+++ b/src/nix-daemon/nix-daemon.cc
@@ -901,7 +901,11 @@ static PeerInfo getPeerInfo(int remote)
 
 #if defined(SO_PEERCRED)
 
+#if defined(__OpenBSD__)
+    struct sockpeercred cred;
+#else
     ucred cred;
+#endif
     socklen_t credLen = sizeof(cred);
     if (getsockopt(remote, SOL_SOCKET, SO_PEERCRED, &cred, &credLen) == -1)
         throw SysError("getting peer credentials");