/*
 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
 *
 * Copyright (C) 2002-2007 Aleph One Ltd.
 *   for Toby Churchill Ltd and Brightstar Engineering
 *
 * Created by Charles Manning <charles@aleph1.co.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 2.1 as
 * published by the Free Software Foundation.
 *
 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
 */

/*
 * This file is just holds extra declarations used during development.
 * Most of these are from kernel includes placed here so we can use them in
 * applications.
 *
 */

#ifndef __EXTRAS_H__
#define __EXTRAS_H__

#if defined WIN32
#define __inline__ __inline
#define new newHack
#endif

/* XXX U-BOOT XXX */
#if 1 /* !(defined __KERNEL__) || (defined WIN32) */

/* User space defines */

/* XXX U-BOOT XXX */
#if 0
typedef unsigned char __u8;
typedef unsigned short __u16;
typedef unsigned __u32;
#endif

#include <asm/types.h>

/*
 * Simple doubly linked list implementation.
 *
 * Some of the internal functions ("__xxx") are useful when
 * manipulating whole lists rather than single entries, as
 * sometimes we already know the next/prev entries and we can
 * generate better code by using them directly rather than
 * using the generic single-entry routines.
 */

#define prefetch(x) 1

struct list_head {
        struct list_head *next, *prev;
};

#define LIST_HEAD_INIT(name) { &(name), &(name) }

#define LIST_HEAD(name) \
        struct list_head name = LIST_HEAD_INIT(name)

#define INIT_LIST_HEAD(ptr) do { \
        (ptr)->next = (ptr); (ptr)->prev = (ptr); \
} while (0)

/*
 * Insert a new entry between two known consecutive entries.
 *
 * This is only for internal list manipulation where we know
 * the prev/next entries already!
 */
static __inline__ void __list_add(struct list_head *new,
                                  struct list_head *prev,
                                  struct list_head *next)
{
        next->prev = new;
        new->next = next;
        new->prev = prev;
        prev->next = new;
}

/**
 * list_add - add a new entry
 * @new: new entry to be added
 * @head: list head to add it after
 *
 * Insert a new entry after the specified head.
 * This is good for implementing stacks.
 */
static __inline__ void list_add(struct list_head *new, struct list_head *head)
{
        __list_add(new, head, head->next);
}

/**
 * list_add_tail - add a new entry
 * @new: new entry to be added
 * @head: list head to add it before
 *
 * Insert a new entry before the specified head.
 * This is useful for implementing queues.
 */
static __inline__ void list_add_tail(struct list_head *new,
                                     struct list_head *head)
{
        __list_add(new, head->prev, head);
}

/*
 * Delete a list entry by making the prev/next entries
 * point to each other.
 *
 * This is only for internal list manipulation where we know
 * the prev/next entries already!
 */
static __inline__ void __list_del(struct list_head *prev,
                                  struct list_head *next)
{
        next->prev = prev;
        prev->next = next;
}

/**
 * list_del - deletes entry from list.
 * @entry: the element to delete from the list.
 * Note: list_empty on entry does not return true after this, the entry is
 * in an undefined state.
 */
static __inline__ void list_del(struct list_head *entry)
{
        __list_del(entry->prev, entry->next);
}

/**
 * list_del_init - deletes entry from list and reinitialize it.
 * @entry: the element to delete from the list.
 */
static __inline__ void list_del_init(struct list_head *entry)
{
        __list_del(entry->prev, entry->next);
        INIT_LIST_HEAD(entry);
}

/**
 * list_empty - tests whether a list is empty
 * @head: the list to test.
 */
static __inline__ int list_empty(struct list_head *head)
{
        return head->next == head;
}

/**
 * list_splice - join two lists
 * @list: the new list to add.
 * @head: the place to add it in the first list.
 */
static __inline__ void list_splice(struct list_head *list,
                                   struct list_head *head)
{
        struct list_head *first = list->next;

        if (first != list) {
                struct list_head *last = list->prev;
                struct list_head *at = head->next;

                first->prev = head;
                head->next = first;

                last->next = at;
                at->prev = last;
        }
}

/**
 * list_entry - get the struct for this entry
 * @ptr:        the &struct list_head pointer.
 * @type:       the type of the struct this is embedded in.
 * @member:     the name of the list_struct within the struct.
 */
#define list_entry(ptr, type, member) \
        ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))

/**
 * list_for_each        -       iterate over a list
 * @pos:        the &struct list_head to use as a loop counter.
 * @head:       the head for your list.
 */
#define list_for_each(pos, head) \
        for (pos = (head)->next, prefetch(pos->next); pos != (head); \
                pos = pos->next, prefetch(pos->next))

/**
 * list_for_each_safe   -       iterate over a list safe against removal
 *                              of list entry
 * @pos:        the &struct list_head to use as a loop counter.
 * @n:          another &struct list_head to use as temporary storage
 * @head:       the head for your list.
 */
#define list_for_each_safe(pos, n, head) \
        for (pos = (head)->next, n = pos->next; pos != (head); \
                pos = n, n = pos->next)

/*
 * File types
 */
#define DT_UNKNOWN      0
#define DT_FIFO         1
#define DT_CHR          2
#define DT_DIR          4
#define DT_BLK          6
#define DT_REG          8
#define DT_LNK          10
#define DT_SOCK         12
#define DT_WHT          14

#ifndef WIN32
/* XXX U-BOOT XXX */
#if 0
#include <sys/stat.h>
#else
#include "common.h"
#endif
#endif

/*
 * Attribute flags.  These should be or-ed together to figure out what
 * has been changed!
 */
#define ATTR_MODE       1
#define ATTR_UID        2
#define ATTR_GID        4
#define ATTR_SIZE       8
#define ATTR_ATIME      16
#define ATTR_MTIME      32
#define ATTR_CTIME      64
#define ATTR_ATIME_SET  128
#define ATTR_MTIME_SET  256
#define ATTR_FORCE      512     /* Not a change, but a change it */
#define ATTR_ATTR_FLAG  1024

struct iattr {
        unsigned int ia_valid;
        unsigned ia_mode;
        unsigned ia_uid;
        unsigned ia_gid;
        unsigned ia_size;
        unsigned ia_atime;
        unsigned ia_mtime;
        unsigned ia_ctime;
        unsigned int ia_attr_flags;
};

#define KERN_DEBUG

#else

#ifndef WIN32
#include <linux/types.h>
#include <linux/list.h>
#include <linux/fs.h>
#include <linux/stat.h>
#endif

#endif

#if defined WIN32
#undef new
#endif

#endif