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 <fsclient/file.h> 27 #include <fsserver/ext2_file_operations.h> 28 #include <fsserver/directory_resource.h> 29 30 31 32 /* Forward declarations. */ 33 34 struct Ext2DirectoryState; 35 36 37 38 /* Support for providing access to files. */ 39 40 class Ext2Directory : public DirectoryResource 41 { 42 protected: 43 Ext2FileOperations *_ops; 44 fileid_t _fileid; 45 46 virtual long _opendir(flags_t flags, offset_t *size, l4_cap_idx_t *cap, 47 object_flags_t *object_flags); 48 49 public: 50 explicit Ext2Directory(Ext2FileOperations *ops, fileid_t fileid) 51 : _ops(ops), _fileid(fileid) 52 { 53 } 54 55 virtual ~Ext2Directory(); 56 57 /* Helper methods. */ 58 59 void read_directory(fileid_t fileid, file_t *writer); 60 61 int write_directory_entry(struct Ext2DirectoryState *dir); 62 }; 63 64 65 66 /* Helper structures. */ 67 68 struct Ext2DirectoryState 69 { 70 Ext2Directory *directory; 71 file_t *writer; 72 struct ext2_dir_entry *entry; 73 long offset; 74 }; 75 76 // vim: tabstop=4 expandtab shiftwidth=4