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/*

 * JFFS -- Journaling Flash File System, Linux implementation.

 *

 * Copyright (C) 1999, 2000  Axis Communications AB.

 *

 * Created by Finn Hakansson <finn@axis.com>.

 *

 * This is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * $Id: intrep.h,v 1.1.1.1 2004-04-15 01:09:58 phoenix Exp $

 *

 */

#ifndef __LINUX_JFFS_INTREP_H__

#define __LINUX_JFFS_INTREP_H__

#include "jffs_fm.h"

struct jffs_node *jffs_alloc_node(void);

void jffs_free_node(struct jffs_node *n);

int jffs_get_node_inuse(void);

long jffs_get_file_count(void);

__u32 jffs_checksum(const void *data, int size);

void jffs_cleanup_control(struct jffs_control *c);

int jffs_build_fs(struct super_block *sb);

int jffs_insert_node(struct jffs_control *c, struct jffs_file *f,

                     const struct jffs_raw_inode *raw_inode,

                     const char *name, struct jffs_node *node);

struct jffs_file *jffs_find_file(struct jffs_control *c, __u32 ino);

struct jffs_file *jffs_find_child(struct jffs_file *dir, const char *name, int len);

void jffs_free_node(struct jffs_node *node);

int jffs_foreach_file(struct jffs_control *c, int (*func)(struct jffs_file *));

int jffs_free_node_list(struct jffs_file *f);

int jffs_free_file(struct jffs_file *f);

int jffs_possibly_delete_file(struct jffs_file *f);

int jffs_build_file(struct jffs_file *f);

int jffs_insert_file_into_hash(struct jffs_file *f);

int jffs_insert_file_into_tree(struct jffs_file *f);

int jffs_unlink_file_from_hash(struct jffs_file *f);

int jffs_unlink_file_from_tree(struct jffs_file *f);

int jffs_remove_redundant_nodes(struct jffs_file *f);

int jffs_file_count(struct jffs_file *f);

int jffs_write_node(struct jffs_control *c, struct jffs_node *node,

                    struct jffs_raw_inode *raw_inode,

                    const char *name, const unsigned char *buf,

                    int recoverable, struct jffs_file *f);

int jffs_read_data(struct jffs_file *f, unsigned char *buf, __u32 read_offset, __u32 size);

/* Garbage collection stuff.  */

int jffs_garbage_collect_thread(void *c);

void jffs_garbage_collect_trigger(struct jffs_control *c);

int jffs_garbage_collect_now(struct jffs_control *c);

/* Is there enough space on the flash?  */

static inline int JFFS_ENOUGH_SPACE(struct jffs_control *c, __u32 space)

{

        struct jffs_fmcontrol *fmc = c->fmc;

        while (1) {

                if ((fmc->flash_size - (fmc->used_size + fmc->dirty_size))

                        >= fmc->min_free_size + space) {

                        return 1;

                }

                if (fmc->dirty_size < fmc->sector_size)

                        return 0;

                if (jffs_garbage_collect_now(c)) {

                  D1(printk("JFFS_ENOUGH_SPACE: jffs_garbage_collect_now() failed.\n"));

                  return 0;

                }

        }

}

/* For debugging purposes.  */

void jffs_print_node(struct jffs_node *n);

void jffs_print_raw_inode(struct jffs_raw_inode *raw_inode);

int jffs_print_file(struct jffs_file *f);

void jffs_print_hash_table(struct jffs_control *c);

void jffs_print_tree(struct jffs_file *first_file, int indent);

struct buffer_head *jffs_get_write_buffer(kdev_t dev, int block);

void jffs_put_write_buffer(struct buffer_head *bh);

#endif /* __LINUX_JFFS_INTREP_H__  */