1 /* 2 * A pipe opener resource. 3 * 4 * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include "memory.h" 25 #include "pipe_opener_interface.h" 26 #include "pipe_paging.h" 27 #include "resource.h" 28 29 30 31 /* Support for providing access to pipes. */ 32 33 class PipeOpenerResource : public Resource, public PipeOpener 34 { 35 protected: 36 Memory *_memory; 37 38 long open_endpoint(PipePaging *paging, bool writing, l4_cap_idx_t *endpoint); 39 40 public: 41 explicit PipeOpenerResource(Memory *memory); 42 43 /* Server details. */ 44 45 int expected_items(); 46 47 ipc_server_handler_type handler(); 48 49 void *interface() 50 { return static_cast<PipeOpener *>(this); } 51 52 /* PipeOpener interface methods. */ 53 54 long pipe(offset_t size, l4_cap_idx_t *reader, l4_cap_idx_t *writer); 55 }; 56 57 // vim: tabstop=4 expandtab shiftwidth=4