Subversion Repositories HelenOS

Rev

Rev 4537 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
4419 trochtova 1
/*
2
 * Copyright (c) 2008 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 fs
30
 * @{
31
 */
32
 
33
#ifndef TMPFS_TMPFS_H_
34
#define TMPFS_TMPFS_H_
35
 
36
#include <ipc/ipc.h>
37
#include <libfs.h>
38
#include <atomic.h>
39
#include <sys/types.h>
40
#include <bool.h>
4537 trochtova 41
#include <adt/hash_table.h>
4419 trochtova 42
 
43
#ifndef dprintf
44
#define dprintf(...)    printf(__VA_ARGS__)
45
#endif
46
 
4420 trochtova 47
#define TMPFS_NODE(node)    ((node) ? (tmpfs_node_t *)(node)->data : NULL)
48
#define FS_NODE(node)       ((node) ? (node)->bp : NULL)
49
 
4419 trochtova 50
typedef enum {
51
    TMPFS_NONE,
52
    TMPFS_FILE,
53
    TMPFS_DIRECTORY
54
} tmpfs_dentry_type_t;
55
 
4420 trochtova 56
/* forward declaration */
57
struct tmpfs_node;
58
 
4419 trochtova 59
typedef struct tmpfs_dentry {
4420 trochtova 60
    link_t link;        /**< Linkage for the list of siblings. */
61
    struct tmpfs_node *node;/**< Back pointer to TMPFS node. */
62
    char *name;     /**< Name of dentry. */
63
} tmpfs_dentry_t;
64
 
65
typedef struct tmpfs_node {
66
    fs_node_t *bp;      /**< Back pointer to the FS node. */
4419 trochtova 67
    fs_index_t index;   /**< TMPFS node index. */
4420 trochtova 68
    dev_handle_t dev_handle;/**< Device handle. */
69
    link_t nh_link;     /**< Nodes hash table link. */
4419 trochtova 70
    tmpfs_dentry_type_t type;
71
    unsigned lnkcnt;    /**< Link count. */
72
    size_t size;        /**< File size if type is TMPFS_FILE. */
73
    void *data;     /**< File content's if type is TMPFS_FILE. */
4420 trochtova 74
    link_t cs_head;     /**< Head of child's siblings list. */
75
} tmpfs_node_t;
4419 trochtova 76
 
77
extern fs_reg_t tmpfs_reg;
78
 
79
extern libfs_ops_t tmpfs_libfs_ops;
80
 
4420 trochtova 81
extern bool tmpfs_init(void);
82
 
4419 trochtova 83
extern void tmpfs_mounted(ipc_callid_t, ipc_call_t *);
84
extern void tmpfs_mount(ipc_callid_t, ipc_call_t *);
85
extern void tmpfs_lookup(ipc_callid_t, ipc_call_t *);
86
extern void tmpfs_read(ipc_callid_t, ipc_call_t *);
87
extern void tmpfs_write(ipc_callid_t, ipc_call_t *);
88
extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *);
4668 trochtova 89
extern void tmpfs_stat(ipc_callid_t, ipc_call_t *);
4537 trochtova 90
extern void tmpfs_close(ipc_callid_t, ipc_call_t *);
4419 trochtova 91
extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *);
4537 trochtova 92
extern void tmpfs_open_node(ipc_callid_t, ipc_call_t *);
93
extern void tmpfs_sync(ipc_callid_t, ipc_call_t *);
4419 trochtova 94
 
95
extern bool tmpfs_restore(dev_handle_t);
96
 
97
#endif
98
 
99
/**
100
 * @}
101
 */