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/*
* 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 of macros that would normally
* be providesd in the Linux kernel. These macros have been written from
* scratch but are functionally equivalent to the Linux ones.
*
*/
#ifndef __EXTRAS_H__
#define __EXTRAS_H__
#if defined WIN32
#define __inline__ __inline
#define new newHack
#endif
#if !(defined __KERNEL__) || (defined WIN32)
/* Definition of types */
typedef unsigned char __u8;
typedef unsigned short __u16;
typedef unsigned __u32;
/*
* This is a simple doubly linked list implementation that matches the
* way the Linux kernel doubly linked list implementation works.
*/
struct list_head {
struct list_head *next; /* next in chain */
struct list_head *prev; /* previous in chain */
};
/* Initialise a list head to an empty list */
#define INIT_LIST_HEAD(p) \
do { \
(p)->next = (p);\
(p)->prev = (p); \
} while(0)
/* Add an element to a list */
static __inline__ void list_add(struct list_head *newEntry,
struct list_head *list)
{
struct list_head *listNext = list->next;
list->next = newEntry;
newEntry->prev = list;
newEntry->next = listNext;
listNext->prev = newEntry;
}
/* Take an element out of its current list, with or without
* reinitialising the links.of the entry*/
static __inline__ void list_del(struct list_head *entry)
{
struct list_head *listNext = entry->next;
struct list_head *listPrev = entry->prev;
listNext->prev = listPrev;
listPrev->next = listNext;
}
static __inline__ void list_del_init(struct list_head *entry)
{
list_del(entry);
entry->next = entry->prev = entry;
}
/* Test if the list is empty */
static __inline__ int list_empty(struct list_head *entry)
{
return (entry->next == entry);
}
/* list_entry takes a pointer to a list entry and offsets it to that
* we can find a pointer to the object it is embedded in.
*/
#define list_entry(entry, type, member) \
((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
/* list_for_each and list_for_each_safe iterate over lists.
* list_for_each_safe uses temporary storage to make the list delete safe
*/
#define list_for_each(itervar, list) \
for (itervar = (list)->next; itervar != (list); itervar = itervar->next )
#define list_for_each_safe(itervar,saveVar, list) \
for (itervar = (list)->next, saveVar = (list)->next->next; itervar != (list); \
itervar = saveVar, saveVar = saveVar->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 DR_WHT 14
#ifndef WIN32
#include <sys/stat.h>
#endif
/*
* Attribute flags.
*/
#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
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
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