Kernel: Remove SmapDisabler in sys$accept()

Kernel/Process.cpp

@@ -3157,13 +3157,14 @@ int Process::sys$listen(int sockfd, int backlog)
     return socket.listen(backlog);
 }
 
-int Process::sys$accept(int accepting_socket_fd, sockaddr* address, socklen_t* address_size)
+int Process::sys$accept(int accepting_socket_fd, sockaddr* user_address, socklen_t* user_address_size)
 {
     REQUIRE_PROMISE(accept);
-    if (!validate_write_typed(address_size))
+    if (!validate_write_typed(user_address_size))
         return -EFAULT;
-    SmapDisabler disabler;
-    if (!validate_write(address, *address_size))
+    socklen_t address_size = 0;
+    copy_from_user(&address_size, user_address_size);
+    if (!validate_write(user_address, address_size))
         return -EFAULT;
     int accepted_socket_fd = alloc_fd();
     if (accepted_socket_fd < 0)
@@ -3184,7 +3185,13 @@ int Process::sys$accept(int accepting_socket_fd, sockaddr* address, socklen_t* a
     }
     auto accepted_socket = socket.accept();
     ASSERT(accepted_socket);
-    accepted_socket->get_peer_address(address, address_size);
+
+    u8 address_buffer[sizeof(sockaddr_un)];
+    address_size = min(sizeof(sockaddr_un), static_cast<size_t>(address_size));
+    accepted_socket->get_peer_address((sockaddr*)address_buffer, &address_size);
+    copy_to_user(user_address, address_buffer, address_size);
+    copy_to_user(user_address_size, &address_size);
+
     auto accepted_socket_description = FileDescription::create(*accepted_socket);
     accepted_socket_description->set_readable(true);
     accepted_socket_description->set_writable(true);