1 /* 2 * A file accessor employing a file provided by an Ext2-compatible filesystem. 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 <ext2fs/ext2fs.h> 25 26 #include <fsserver/accessor.h> 27 #include <fsserver/ext2_file_operations.h> 28 29 30 31 /* An Ext2 file accessor, providing flexpages corresponding to file regions. */ 32 33 class Ext2FileAccessor : public Accessor 34 { 35 protected: 36 Ext2FileOperations *_ops; 37 ext2_file_t _file; 38 39 /* Data transfer helper methods. */ 40 41 virtual void fill_populated(Flexpage *flexpage); 42 43 virtual void flush_populated(Flexpage *flexpage); 44 45 public: 46 explicit Ext2FileAccessor(Ext2FileOperations *ops, ext2_file_t file, 47 fileid_t fileid); 48 49 virtual void close(); 50 51 virtual offset_t get_size(); 52 53 virtual void set_size(offset_t size); 54 55 virtual void remove(); 56 }; 57 58 // vim: tabstop=4 expandtab shiftwidth=4