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/*
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* JFFS -- Journaling Flash File System, Linux implementation.
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*
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* Copyright (C) 1999, 2000 Axis Communications AB.
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*
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* Created by Finn Hakansson <finn@axis.com>.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* $Id: intrep.h,v 1.1.1.1 2004-04-15 01:09:58 phoenix Exp $
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*
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*/
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#ifndef __LINUX_JFFS_INTREP_H__
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#define __LINUX_JFFS_INTREP_H__
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#include "jffs_fm.h"
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struct jffs_node *jffs_alloc_node(void);
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void jffs_free_node(struct jffs_node *n);
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int jffs_get_node_inuse(void);
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long jffs_get_file_count(void);
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__u32 jffs_checksum(const void *data, int size);
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void jffs_cleanup_control(struct jffs_control *c);
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int jffs_build_fs(struct super_block *sb);
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int jffs_insert_node(struct jffs_control *c, struct jffs_file *f,
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const struct jffs_raw_inode *raw_inode,
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const char *name, struct jffs_node *node);
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struct jffs_file *jffs_find_file(struct jffs_control *c, __u32 ino);
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struct jffs_file *jffs_find_child(struct jffs_file *dir, const char *name, int len);
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void jffs_free_node(struct jffs_node *node);
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int jffs_foreach_file(struct jffs_control *c, int (*func)(struct jffs_file *));
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int jffs_free_node_list(struct jffs_file *f);
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int jffs_free_file(struct jffs_file *f);
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int jffs_possibly_delete_file(struct jffs_file *f);
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int jffs_build_file(struct jffs_file *f);
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int jffs_insert_file_into_hash(struct jffs_file *f);
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int jffs_insert_file_into_tree(struct jffs_file *f);
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int jffs_unlink_file_from_hash(struct jffs_file *f);
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int jffs_unlink_file_from_tree(struct jffs_file *f);
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int jffs_remove_redundant_nodes(struct jffs_file *f);
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int jffs_file_count(struct jffs_file *f);
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int jffs_write_node(struct jffs_control *c, struct jffs_node *node,
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struct jffs_raw_inode *raw_inode,
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const char *name, const unsigned char *buf,
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int recoverable, struct jffs_file *f);
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int jffs_read_data(struct jffs_file *f, unsigned char *buf, __u32 read_offset, __u32 size);
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/* Garbage collection stuff. */
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int jffs_garbage_collect_thread(void *c);
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void jffs_garbage_collect_trigger(struct jffs_control *c);
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int jffs_garbage_collect_now(struct jffs_control *c);
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/* Is there enough space on the flash? */
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static inline int JFFS_ENOUGH_SPACE(struct jffs_control *c, __u32 space)
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{
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struct jffs_fmcontrol *fmc = c->fmc;
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while (1) {
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if ((fmc->flash_size - (fmc->used_size + fmc->dirty_size))
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>= fmc->min_free_size + space) {
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return 1;
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}
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if (fmc->dirty_size < fmc->sector_size)
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return 0;
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if (jffs_garbage_collect_now(c)) {
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D1(printk("JFFS_ENOUGH_SPACE: jffs_garbage_collect_now() failed.\n"));
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return 0;
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}
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}
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}
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/* For debugging purposes. */
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void jffs_print_node(struct jffs_node *n);
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void jffs_print_raw_inode(struct jffs_raw_inode *raw_inode);
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int jffs_print_file(struct jffs_file *f);
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void jffs_print_hash_table(struct jffs_control *c);
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void jffs_print_tree(struct jffs_file *first_file, int indent);
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struct buffer_head *jffs_get_write_buffer(kdev_t dev, int block);
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void jffs_put_write_buffer(struct buffer_head *bh);
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#endif /* __LINUX_JFFS_INTREP_H__ */
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