| paul@93 | 1 | /* |
| paul@93 | 2 | * A resource offering support for creating contexts and opening files. |
| paul@93 | 3 | * |
| paul@93 | 4 | * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk> |
| paul@93 | 5 | * |
| paul@93 | 6 | * This program is free software; you can redistribute it and/or |
| paul@93 | 7 | * modify it under the terms of the GNU General Public License as |
| paul@93 | 8 | * published by the Free Software Foundation; either version 2 of |
| paul@93 | 9 | * the License, or (at your option) any later version. |
| paul@93 | 10 | * |
| paul@93 | 11 | * This program is distributed in the hope that it will be useful, |
| paul@93 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| paul@93 | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| paul@93 | 14 | * GNU General Public License for more details. |
| paul@93 | 15 | * |
| paul@93 | 16 | * You should have received a copy of the GNU General Public License |
| paul@93 | 17 | * along with this program; if not, write to the Free Software |
| paul@93 | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| paul@93 | 19 | * Boston, MA 02110-1301, USA |
| paul@93 | 20 | */ |
| paul@93 | 21 | |
| paul@9 | 22 | #pragma once |
| paul@9 | 23 | |
| paul@209 | 24 | #include <fsserver/file_object_registry.h> |
| paul@144 | 25 | #include <fsserver/file_opening.h> |
| paul@94 | 26 | #include <fsserver/opener_context_resource.h> |
| paul@94 | 27 | #include <fsserver/opener_interface.h> |
| paul@94 | 28 | #include <fsserver/resource.h> |
| paul@9 | 29 | |
| paul@93 | 30 | |
| paul@93 | 31 | |
| paul@9 | 32 | /* Support for providing access to files. */ |
| paul@9 | 33 | |
| paul@144 | 34 | class OpenerResource : public Resource, public FileOpening, public Opener |
| paul@9 | 35 | { |
| paul@144 | 36 | protected: |
| paul@209 | 37 | FileObjectRegistry *_registry; |
| paul@144 | 38 | |
| paul@156 | 39 | /* Convenience methods determining different object types. */ |
| paul@156 | 40 | |
| paul@156 | 41 | virtual bool accessing_directory(const char *path, flags_t flags, fileid_t fileid) = 0; |
| paul@156 | 42 | |
| paul@156 | 43 | virtual bool accessing_file(const char *path, flags_t flags, fileid_t fileid) = 0; |
| paul@156 | 44 | |
| paul@202 | 45 | /* Convenience methods obtaining different resource types. */ |
| paul@156 | 46 | |
| paul@171 | 47 | virtual long get_directory(const char *path, flags_t flags, fileid_t fileid, |
| paul@171 | 48 | offset_t *size, l4_cap_idx_t *cap, |
| paul@171 | 49 | object_flags_t *object_flags); |
| paul@157 | 50 | |
| paul@171 | 51 | virtual long get_file(const char *path, flags_t flags, fileid_t fileid, |
| paul@171 | 52 | offset_t *size, l4_cap_idx_t *cap, |
| paul@171 | 53 | object_flags_t *object_flags); |
| paul@156 | 54 | |
| paul@211 | 55 | /* Notification methods. */ |
| paul@211 | 56 | |
| paul@211 | 57 | virtual long notify_parent(const char *path); |
| paul@211 | 58 | |
| paul@9 | 59 | public: |
| paul@209 | 60 | explicit OpenerResource(FileObjectRegistry *registry); |
| paul@10 | 61 | |
| paul@156 | 62 | virtual ~OpenerResource(); |
| paul@156 | 63 | |
| paul@10 | 64 | /* Server details. */ |
| paul@10 | 65 | |
| paul@10 | 66 | int expected_items(); |
| paul@9 | 67 | |
| paul@10 | 68 | ipc_server_handler_type handler(); |
| paul@10 | 69 | |
| paul@10 | 70 | void *interface() |
| paul@10 | 71 | { return static_cast<Opener *>(this); } |
| paul@10 | 72 | |
| paul@10 | 73 | /* Direct access methods. */ |
| paul@9 | 74 | |
| paul@171 | 75 | long open(const char *path, flags_t flags, offset_t *size, |
| paul@171 | 76 | l4_cap_idx_t *cap, object_flags_t *object_flags); |
| paul@10 | 77 | |
| paul@10 | 78 | /* Opener interface methods. */ |
| paul@10 | 79 | |
| paul@10 | 80 | long context(l4_cap_idx_t *context); |
| paul@9 | 81 | }; |
| paul@9 | 82 | |
| paul@9 | 83 | // vim: tabstop=4 expandtab shiftwidth=4 |
