/*
* Copyright (c) 2008 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup tmpfs
* @{
*/
#ifndef TMPFS_TMPFS_H_
#define TMPFS_TMPFS_H_
#include <libfs.h>
#include <stddef.h>
#include <stdbool.h>
#include <adt/hash_table.h>
#define TMPFS_NODE(node) ((node) ? (tmpfs_node_t *)(node)->data : NULL)
#define FS_NODE(node) ((node) ? (node)->bp : NULL)
typedef enum {
TMPFS_NONE,
TMPFS_FILE,
TMPFS_DIRECTORY
} tmpfs_dentry_type_t;
/* forward declaration */
struct tmpfs_node;
typedef struct tmpfs_dentry {
link_t link; /**< Linkage for the list of siblings. */
struct tmpfs_node *node;/**< Back pointer to TMPFS node. */
char *name; /**< Name of dentry. */
} tmpfs_dentry_t;
typedef struct tmpfs_node {
fs_node_t *bp; /**< Back pointer to the FS node. */
fs_index_t index; /**< TMPFS node index. */
service_id_t service_id;/**< Service ID of block device. */
ht_link_t nh_link; /**< Nodes hash table link. */
tmpfs_dentry_type_t type;
unsigned lnkcnt; /**< Link count. */
size_t size; /**< File size if type is TMPFS_FILE. */
void *data; /**< File content's if type is TMPFS_FILE. */
list_t cs_list; /**< Child's siblings list. */
} tmpfs_node_t;
extern vfs_out_ops_t tmpfs_ops;
extern libfs_ops_t tmpfs_libfs_ops;
extern bool tmpfs_init(void);
#endif
/**
* @}
*/