Ladybird+LibIPC: Move clearing FD_CLOEXEC helper logic to IPC::File

Author: https://github.com/ADKaster
Commit: 343a3a0d7e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/284
Reviewed-by: https://github.com/kalenikaliaksandr
Reviewed-by: https://github.com/trflynn89

Ladybird/HelperProcess.cpp

@@ -160,14 +160,7 @@ ErrorOr<IPC::File> connect_new_request_server_client(Protocol::RequestClient& cl
         return Error::from_string_literal("Failed to connect to RequestServer");
 
     auto socket = new_socket->take_client_socket();
-
-    // FIXME: IPC::Files transferred over the wire are always set O_CLOEXEC during decoding.
-    //        Perhaps we should add an option to IPC::File to allow the receiver to decide whether to
-    //        make it O_CLOEXEC or not. Or an attribute in the .ipc file?
-    auto fd = socket.fd();
-    auto fd_flags = MUST(Core::System::fcntl(fd, F_GETFD));
-    fd_flags &= ~FD_CLOEXEC;
-    MUST(Core::System::fcntl(fd, F_SETFD, fd_flags));
+    TRY(socket.clear_close_on_exec());
 
     return socket;
 }

Userland/Libraries/LibIPC/File.h

@@ -63,6 +63,17 @@ public:
         return exchange(m_fd, -1);
     }
 
+    // FIXME: IPC::Files transferred over the wire are always set O_CLOEXEC during decoding.
+    //        Perhaps we should add an option to IPC::File to allow the receiver to decide whether to
+    //        make it O_CLOEXEC or not. Or an attribute in the .ipc file?
+    ErrorOr<void> clear_close_on_exec()
+    {
+        auto fd_flags = TRY(Core::System::fcntl(m_fd, F_GETFD));
+        fd_flags &= ~FD_CLOEXEC;
+        TRY(Core::System::fcntl(m_fd, F_SETFD, fd_flags));
+        return {};
+    }
+
 private:
     explicit File(int fd)
         : m_fd(fd)