source: mainline/uspace/lib/libfs/libfs.h@ b6035ba

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since b6035ba was b6035ba, checked in by Jakub Jermar <jakub@…>, 16 years ago

Introduce the concept of FS nodes. A FS node is a typed abstraction of
file-system-specific node type. It replaces the void * in libfs interfaces
and is suitable for holding various information such as mount point data.

  • Property mode set to 100644
File size: 2.7 KB
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1/*
2 * Copyright (c) 2007 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libfs
30 * @{
31 */
32/**
33 * @file
34 */
35
36#ifndef LIBFS_LIBFS_H_
37#define LIBFS_LIBFS_H_
38
39#include "../../srv/vfs/vfs.h"
40#include <stdint.h>
41#include <ipc/ipc.h>
42#include <async.h>
43
44typedef struct {
45 void *data; /**< Data of the file system implementation. */
46} fs_node_t;
47
48typedef struct {
49 fs_node_t * (* match)(fs_node_t *, const char *);
50 fs_node_t * (* node_get)(dev_handle_t, fs_index_t);
51 void (* node_put)(fs_node_t *);
52 fs_node_t * (* create)(dev_handle_t, int);
53 int (* destroy)(fs_node_t *);
54 int (* link)(fs_node_t *, fs_node_t *, const char *);
55 int (* unlink)(fs_node_t *, fs_node_t *);
56 fs_index_t (* index_get)(fs_node_t *);
57 size_t (* size_get)(fs_node_t *);
58 unsigned (* lnkcnt_get)(fs_node_t *);
59 bool (* has_children)(fs_node_t *);
60 fs_node_t *(* root_get)(dev_handle_t);
61 char (* plb_get_char)(unsigned pos);
62 bool (* is_directory)(fs_node_t *);
63 bool (* is_file)(fs_node_t *);
64} libfs_ops_t;
65
66typedef struct {
67 int fs_handle; /**< File system handle. */
68 ipcarg_t vfs_phonehash; /**< Initial VFS phonehash. */
69 uint8_t *plb_ro; /**< Read-only PLB view. */
70} fs_reg_t;
71
72extern int fs_register(int, fs_reg_t *, vfs_info_t *, async_client_conn_t);
73
74extern void libfs_lookup(libfs_ops_t *, fs_handle_t, ipc_callid_t, ipc_call_t *);
75
76#endif
77
78/** @}
79 */
80
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