Change name matching algorithm

[yaffs2.git] / devextras.h

diff --git a/devextras.h b/devextras.h
index 55c31219d3dd7bb09b567900e0f73da18a52b903..a9366fdd2e79b182750938d655036f7928c99ceb 100644 (file)
--- 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
@@ -24,7 +24,7 @@
 #define __EXTRAS_H__
 
 
-#if !(defined __KERNEL__)
+#if !(defined __KERNEL__) 
 
 /* Definition of types */
 typedef unsigned char __u8;
@@ -44,6 +44,12 @@ struct ylist_head {
 };
 
 
+/* 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 { \
@@ -54,41 +60,53 @@ do { \
 
 /* Add an element to a list */
 static __inline__ void ylist_add(struct ylist_head *newEntry, 
-                                struct ylist_head *list)
+                                 struct ylist_head *list)
 {
-       struct ylist_head *listNext = list->next;
-       
-       list->next = newEntry;
-       newEntry->prev = 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*/
 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;
+        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);
 }
 
 
@@ -98,7 +116,7 @@ static __inline__ int ylist_empty(struct ylist_head *entry)
  
  
 #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.
@@ -106,11 +124,11 @@ static __inline__ int ylist_empty(struct ylist_head *entry)
  */
 
 #define ylist_for_each(itervar, list) \
-       for (itervar = (list)->next; itervar != (list); itervar = itervar->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)
+        for (itervar = (list)->next, saveVar = (list)->next->next; itervar != (list); \
+         itervar = saveVar, saveVar = saveVar->next)
 
 
 #if !(defined __KERNEL__)
@@ -125,15 +143,15 @@ static __inline__ int ylist_empty(struct ylist_head *entry)
 /* 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
+#define DT_REG          8
+#define DT_LNK          10
+#define DT_SOCK         12
+#define DT_WHT          14
 
 
 #ifndef WIN32
@@ -141,17 +159,17 @@ static __inline__ int ylist_empty(struct ylist_head *entry)
 #endif
 
 /*
- * Attribute flags.
+ * 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_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;
@@ -161,7 +179,7 @@ struct iattr {
        unsigned ia_atime;
        unsigned ia_mtime;
        unsigned ia_ctime;
-       unsigned int ia_attr_flags;
+        unsigned int ia_attr_flags;
 };
 
 #endif