1 /* 2 * An object for a directory 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 <mem/types.h> 27 #include <fsserver/directory_accessor.h> 28 #include <fsserver/ext2_file_operations.h> 29 30 31 32 /* Forward declarations. */ 33 34 struct Ext2DirectoryState; 35 36 37 38 /* Support for providing access to files. */ 39 40 class Ext2DirectoryAccessor : public DirectoryAccessor 41 { 42 protected: 43 Ext2FileOperations *_ops; 44 fileid_t _fileid; 45 46 public: 47 explicit Ext2DirectoryAccessor(Ext2FileOperations *ops, fileid_t fileid); 48 49 virtual ~Ext2DirectoryAccessor(); 50 51 /* Accessor methods. */ 52 53 virtual void read_directory(file_t *writer); 54 55 /* Helper methods. */ 56 57 int write_directory_entry(struct Ext2DirectoryState *dir); 58 }; 59 60 61 62 /* Helper structures. */ 63 64 struct Ext2DirectoryState 65 { 66 Ext2DirectoryAccessor *directory; 67 file_t *writer; 68 struct ext2_dir_entry *entry; 69 long offset; 70 }; 71 72 // vim: tabstop=4 expandtab shiftwidth=4