net/PeerCredentials: wrapper for struct ucred

src/net/SocketDescriptor.cxx

@@ -7,6 +7,7 @@
 #include "IPv4Address.hxx"
 #include "IPv6Address.hxx"
 #include "UniqueSocketDescriptor.hxx"
+#include "PeerCredentials.hxx"
 
 #ifdef __linux__
 #include "io/UniqueFileDescriptor.hxx"
@@ -225,19 +226,19 @@ SocketDescriptor::GetIntOption(int level, int name, int fallback) const noexcept
 	return value;
 }
 
-#ifdef HAVE_STRUCT_UCRED
-
-struct ucred
+SocketPeerCredentials
 SocketDescriptor::GetPeerCredentials() const noexcept
 {
-	struct ucred cred;
+#ifdef HAVE_STRUCT_UCRED
+	SocketPeerCredentials cred;
 	if (GetOption(SOL_SOCKET, SO_PEERCRED,
-		      &cred, sizeof(cred)) < sizeof(cred))
-		cred.pid = -1;
+		      &cred.cred, sizeof(cred.cred)) < sizeof(cred.cred))
+		return SocketPeerCredentials::Undefined();
 	return cred;
-}
-
+#else
+	return SocketPeerCredentials::Undefined();
 #endif
+}
 
 #ifdef __linux__