X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=devextras.h;h=7df46dc2921cb8c686ad253360ce18b4967a1f18;hp=d2abbd5b7a3d9151d16dba2ba0d867b0dea2cb23;hb=f37d0b9ff0c87c1e22a5f708dbb4b455da7af59f;hpb=40c386c7a14ebfa8afc14562f3b33a416831b26d diff --git a/devextras.h b/devextras.h index d2abbd5..7df46dc 100644 --- a/devextras.h +++ b/devextras.h @@ -1,5 +1,5 @@ /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * 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 @@ -11,107 +11,125 @@ * 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 __KERNEL__) - + * + */ + +#ifndef __EXTRAS_H__ +#define __EXTRAS_H__ + + +#if !(defined __KERNEL__) + /* Definition of types */ -typedef unsigned char __u8; -typedef unsigned short __u16; -typedef unsigned __u32; - +typedef unsigned char __u8; +typedef unsigned short __u16; +typedef unsigned __u32; + #endif - -/* - * This is a simple doubly linked list implementation that matches the - * way the Linux kernel doubly linked list implementation works. - */ - + +/* + * This is a simple doubly linked list implementation that matches the + * way the Linux kernel doubly linked list implementation works. + */ + struct ylist_head { - struct ylist_head *next; /* next in chain */ - struct ylist_head *prev; /* previous in chain */ -}; - - -/* Initialise a list head to an empty list */ + struct ylist_head *next; /* next in chain */ + struct ylist_head *prev; /* previous in chain */ +}; + + +/* Initialise a static list */ +#define YLIST_HEAD(name) \ +struct ylist_head name = { &(name), &(name)} + + + +/* Initialise a list head to an empty list */ #define YINIT_LIST_HEAD(p) \ -do { \ - (p)->next = (p);\ - (p)->prev = (p); \ -} while(0) - - -/* Add an element to a list */ -static __inline__ void ylist_add(struct ylist_head *newEntry, - struct ylist_head *list) -{ - struct ylist_head *listNext = list->next; - - list->next = newEntry; - newEntry->prev = list; +do { \ + (p)->next = (p);\ + (p)->prev = (p); \ +} while (0) + + +/* Add an element to a list */ +static __inline__ void ylist_add(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listNext = list->next; + + list->next = newEntry; + newEntry->prev = list; newEntry->next = listNext; listNext->prev = newEntry; - + +} + +static __inline__ void ylist_add_tail(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listPrev = list->prev; + + list->prev = newEntry; + newEntry->next = list; + newEntry->prev = listPrev; + listPrev->next = newEntry; + } - -/* Take an element out of its current list, with or without - * reinitialising the links.of the entry*/ + +/* Take an element out of its current list, with or without + * reinitialising the links.of the entry*/ static __inline__ void ylist_del(struct ylist_head *entry) -{ - struct ylist_head *listNext = entry->next; - struct ylist_head *listPrev = entry->prev; - - listNext->prev = listPrev; - listPrev->next = listNext; - -} - +{ + struct ylist_head *listNext = entry->next; + struct ylist_head *listPrev = entry->prev; + + listNext->prev = listPrev; + listPrev->next = listNext; + +} + static __inline__ void ylist_del_init(struct ylist_head *entry) -{ - ylist_del(entry); - entry->next = entry->prev = entry; -} - - -/* Test if the list is empty */ +{ + ylist_del(entry); + entry->next = entry->prev = entry; +} + + +/* Test if the list is empty */ static __inline__ int ylist_empty(struct ylist_head *entry) -{ - return (entry->next == entry); -} - - +{ + return (entry->next == entry); +} + + /* ylist_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. - */ - - + * we can find a pointer to the object it is embedded in. + */ + + #define ylist_entry(entry, type, member) \ - ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) - - + ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) + + /* ylist_for_each and list_for_each_safe iterate over lists. * ylist_for_each_safe uses temporary storage to make the list delete safe - */ - + */ + #define ylist_for_each(itervar, list) \ - for (itervar = (list)->next; itervar != (list); itervar = itervar->next ) - -#define ylist_for_each_safe(itervar,saveVar, list) \ - for (itervar = (list)->next, saveVar = (list)->next->next; itervar != (list); \ - itervar = saveVar, saveVar = saveVar->next) - + for (itervar = (list)->next; itervar != (list); itervar = itervar->next) + +#define ylist_for_each_safe(itervar, saveVar, list) \ + for (itervar = (list)->next, saveVar = (list)->next->next; \ + itervar != (list); itervar = saveVar, saveVar = saveVar->next) + #if !(defined __KERNEL__) @@ -122,30 +140,30 @@ static __inline__ int ylist_empty(struct ylist_head *entry) #ifdef CONFIG_YAFFS_PROVIDE_DEFS -/* File types */ - +/* File types */ -#define DT_UNKNOWN 0 -#define DT_FIFO 1 -#define DT_CHR 2 + +#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 -#include -#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 DT_REG 8 +#define DT_LNK 10 +#define DT_SOCK 12 +#define DT_WHT 14 + + +#ifndef WIN32 +#include +#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 @@ -161,21 +179,18 @@ struct iattr { unsigned ia_atime; unsigned ia_mtime; unsigned ia_ctime; - unsigned int ia_attr_flags; -}; - + unsigned int ia_attr_flags; +}; + #endif +#else -#define KERN_DEBUG - -#else - -#include -#include -#include - -#endif - - -#endif +#include +#include +#include + +#endif + + +#endif