client/New: pass SocketPeerCredentials to client_new()

src/client/Client.hxx

@@ -21,6 +21,7 @@
 #include <string>
 
 class SocketAddress;
+class SocketPeerCredentials;
 class UniqueSocketDescriptor;
 class EventLoop;
 class Path;
@@ -300,5 +301,6 @@ struct ClientPerPartitionListHook
 
 void
 client_new(EventLoop &loop, Partition &partition,
-	   UniqueSocketDescriptor fd, SocketAddress address, int uid,
+	   UniqueSocketDescriptor fd, SocketAddress address,
+	   SocketPeerCredentials cred,
 	   unsigned permission) noexcept;

src/client/Listener.cxx

@@ -10,9 +10,9 @@
 #include "config.h"
 
 static unsigned
-GetPermissions(SocketAddress address, int uid) noexcept
+GetPermissions(SocketAddress address, const SocketPeerCredentials cred) noexcept
 {
-	(void)uid; // TODO: implement option to derive permissions from uid
+	(void)cred; // TODO: implement option to derive permissions from uid
 
 #ifdef HAVE_UN
 	if (address.GetFamily() == AF_LOCAL)
@@ -33,9 +33,8 @@ ClientListener::OnAccept(UniqueSocketDescriptor fd,
 			 SocketAddress address) noexcept
 {
 	const auto cred = fd.GetPeerCredentials();
-	const int uid = cred.IsDefined() ? static_cast<int>(cred.GetUid()) : -1;
 
 	client_new(GetEventLoop(), partition,
-		   std::move(fd), address, uid,
+		   std::move(fd), address, cred,
-		   GetPermissions(address, uid));
+		   GetPermissions(address, cred));
 }

src/client/New.cxx

@@ -9,6 +9,7 @@
 #include "Partition.hxx"
 #include "Instance.hxx"
 #include "lib/fmt/SocketAddressFormatter.hxx"
+#include "net/PeerCredentials.hxx"
 #include "net/UniqueSocketDescriptor.hxx"
 #include "net/SocketAddress.hxx"
 #include "util/SpanCast.hxx"
@@ -39,7 +40,8 @@ Client::Client(EventLoop &_loop, Partition &_partition,
 
 void
 client_new(EventLoop &loop, Partition &partition,
-	   UniqueSocketDescriptor fd, SocketAddress remote_address, int uid,
+	   UniqueSocketDescriptor fd, SocketAddress remote_address,
+	   SocketPeerCredentials cred,
 	   unsigned permission) noexcept
 {
 	static unsigned int next_client_num;
@@ -54,6 +56,8 @@ client_new(EventLoop &loop, Partition &partition,
 
 	(void)fd.WriteNoWait(AsBytes(GREETING));
 
+	const int uid = cred.IsDefined() ? static_cast<int>(cred.GetUid()) : -1;
+
 	const unsigned num = next_client_num++;
 	auto *client = new Client(loop, partition, std::move(fd), uid,
 				    permission,