paul@202 | 1 | /* |
paul@202 | 2 | * An object for a directory provided by an Ext2-compatible filesystem. |
paul@202 | 3 | * |
paul@202 | 4 | * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk> |
paul@202 | 5 | * |
paul@202 | 6 | * This program is free software; you can redistribute it and/or |
paul@202 | 7 | * modify it under the terms of the GNU General Public License as |
paul@202 | 8 | * published by the Free Software Foundation; either version 2 of |
paul@202 | 9 | * the License, or (at your option) any later version. |
paul@202 | 10 | * |
paul@202 | 11 | * This program is distributed in the hope that it will be useful, |
paul@202 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
paul@202 | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
paul@202 | 14 | * GNU General Public License for more details. |
paul@202 | 15 | * |
paul@202 | 16 | * You should have received a copy of the GNU General Public License |
paul@202 | 17 | * along with this program; if not, write to the Free Software |
paul@202 | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
paul@202 | 19 | * Boston, MA 02110-1301, USA |
paul@202 | 20 | */ |
paul@202 | 21 | |
paul@202 | 22 | #pragma once |
paul@202 | 23 | |
paul@202 | 24 | #include <ext2fs/ext2fs.h> |
paul@202 | 25 | |
paul@202 | 26 | #include <mem/types.h> |
paul@202 | 27 | #include <fsserver/directory_accessor.h> |
paul@202 | 28 | #include <fsserver/ext2_file_operations.h> |
paul@202 | 29 | |
paul@202 | 30 | |
paul@202 | 31 | |
paul@202 | 32 | /* Forward declarations. */ |
paul@202 | 33 | |
paul@202 | 34 | struct Ext2DirectoryState; |
paul@202 | 35 | |
paul@202 | 36 | |
paul@202 | 37 | |
paul@202 | 38 | /* Support for providing access to files. */ |
paul@202 | 39 | |
paul@202 | 40 | class Ext2DirectoryAccessor : public DirectoryAccessor |
paul@202 | 41 | { |
paul@202 | 42 | protected: |
paul@202 | 43 | Ext2FileOperations *_ops; |
paul@202 | 44 | fileid_t _fileid; |
paul@202 | 45 | |
paul@202 | 46 | public: |
paul@202 | 47 | explicit Ext2DirectoryAccessor(Ext2FileOperations *ops, fileid_t fileid); |
paul@202 | 48 | |
paul@202 | 49 | virtual ~Ext2DirectoryAccessor(); |
paul@202 | 50 | |
paul@202 | 51 | /* Accessor methods. */ |
paul@202 | 52 | |
paul@202 | 53 | virtual void read_directory(file_t *writer); |
paul@202 | 54 | |
paul@202 | 55 | /* Helper methods. */ |
paul@202 | 56 | |
paul@202 | 57 | int write_directory_entry(struct Ext2DirectoryState *dir); |
paul@202 | 58 | }; |
paul@202 | 59 | |
paul@202 | 60 | |
paul@202 | 61 | |
paul@202 | 62 | /* Helper structures. */ |
paul@202 | 63 | |
paul@202 | 64 | struct Ext2DirectoryState |
paul@202 | 65 | { |
paul@202 | 66 | Ext2DirectoryAccessor *directory; |
paul@202 | 67 | file_t *writer; |
paul@202 | 68 | struct ext2_dir_entry *entry; |
paul@202 | 69 | long offset; |
paul@202 | 70 | }; |
paul@202 | 71 | |
paul@202 | 72 | // vim: tabstop=4 expandtab shiftwidth=4 |