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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 1.14 2001/09/23 23:28:37 dwmw2 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__ */
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