1 /* 2 * Filesystem object provider support. 3 * 4 * Copyright (C) 2021, 2022 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 <fsserver/accountable.h> 25 #include <fsserver/notification.h> 26 #include <fsserver/provider_registry.h> 27 #include <resource/resource.h> 28 29 30 31 /* A provider offering notification support and accounting capabilities. */ 32 33 class Provider : public NotificationSupport, public Accountable 34 { 35 protected: 36 fileid_t _fileid; 37 ProviderRegistry *_registry; 38 bool _remove = false; 39 40 public: 41 explicit Provider(fileid_t fileid, ProviderRegistry *registry); 42 43 virtual ~Provider(); 44 45 virtual ProviderRegistry *registry(); 46 47 virtual long make_resource(flags_t flags, offset_t *size, 48 object_flags_t *object_flags, 49 Resource **resource) = 0; 50 51 /* Lifecycle methods. */ 52 53 virtual bool removal_pending(); 54 55 virtual void remove_pending(bool remove); 56 }; 57 58 // vim: tabstop=4 expandtab shiftwidth=4