*
* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*
- * $Id: yaffs_guts.h,v 1.4 2005-04-24 09:57:06 charles Exp $
+ * $Id: yaffs_guts.h,v 1.11 2005-07-31 06:52:40 charles Exp $
*/
#ifndef __YAFFS_GUTS_H__
unsigned sequenceNumber; // The sequence number of this block
// Extra info if this is an object header (YAFFS2 only)
- unsigned extraHeaderInfoAvailable;
- unsigned extraParentObjectId;
- unsigned extraIsShrinkHeader;
- yaffs_ObjectType extraObjectType;
+ unsigned extraHeaderInfoAvailable; // There is extra info available if this is not zero
+ unsigned extraParentObjectId; // The parent object
+ unsigned extraIsShrinkHeader; // Is it a shrink header?
+ unsigned extraShadows; // Does this shadow another object?
+
+ yaffs_ObjectType extraObjectType; // What object type?
- unsigned extraFileLength;
- unsigned extraEquivalentObjectId;
+ unsigned extraFileLength; // Length if it is a file
+ unsigned extraEquivalentObjectId; // Equivalent object Id if it is a hard link
- unsigned validMarker1;
+ unsigned validMarker1;
} yaffs_ExtendedTags;
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
// Thes following apply to directories, files, symlinks - not hard links
- __u32 st_mode; // protection
+ __u32 yst_mode; // protection
#ifdef CONFIG_YAFFS_WINCE
__u32 notForWinCE[5];
#else
- __u32 st_uid; // user ID of owner
- __u32 st_gid; // group ID of owner
- __u32 st_atime; // time of last access
- __u32 st_mtime; // time of last modification
- __u32 st_ctime; // time of last change
+ __u32 yst_uid; // user ID of owner
+ __u32 yst_gid; // group ID of owner
+ __u32 yst_atime; // time of last access
+ __u32 yst_mtime; // time of last modification
+ __u32 yst_ctime; // time of last change
#endif
// File size applies to files only
// Alias is for symlinks only.
YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1];
- __u32 st_rdev; // device stuff for block and char devices (maj/min)
+ __u32 yst_rdev; // device stuff for block and char devices (maj/min)
#ifdef CONFIG_YAFFS_WINCE
__u32 win_ctime[2];
__u32 win_atime[2];
__u32 win_mtime[2];
- __u32 roomToGrow[5];
+ __u32 roomToGrow[4];
#else
- __u32 roomToGrow[11];
+ __u32 roomToGrow[10];
#endif
- // isShrink applies to bject headers written when we shrink the file (ie resize)
+ int shadowsObject; // This object header shadows the specified object if not > 0
+
+ // isShrink applies to object headers written when we shrink the file (ie resize)
__u32 isShrink;
} yaffs_ObjectHeader;
struct list_head siblings; // siblings in a directory
// also used for linking up the free list
- // Where's my data in NAND?
+ // Where's my object header in NAND?
int chunkId; // where it lives
- int nDataChunks;
+ int nDataChunks; // Number of data chunks attached to the file.
__u32 objectId; // the object id value
- __u32 st_mode; // protection
+ __u32 yst_mode; // protection
#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
YCHAR shortName[YAFFS_SHORT_NAME_LENGTH+1];
__u32 win_mtime[2];
__u32 win_atime[2];
#else
- __u32 st_uid; // user ID of owner
- __u32 st_gid; // group ID of owner
- __u32 st_atime; // time of last access
- __u32 st_mtime; // time of last modification
- __u32 st_ctime; // time of last change
+ __u32 yst_uid; // user ID of owner
+ __u32 yst_gid; // group ID of owner
+ __u32 yst_atime; // time of last access
+ __u32 yst_mtime; // time of last modification
+ __u32 yst_ctime; // time of last change
#endif
- __u32 st_rdev; // device stuff for block and char devices
+ __u32 yst_rdev; // device stuff for block and char devices
struct yaffs_DeviceStruct
{
+ struct list_head devList;
+ const char *name;
+
// Entry parameters set up way early. Yaffs sets up the rest.
int nBytesPerChunk; // Should be a power of 2 >= 512
int nChunksPerBlock; // does not need to be a power of 2
int (*initialiseNAND)(struct yaffs_DeviceStruct *dev);
#ifdef CONFIG_YAFFS_YAFFS2
- int (*writeChunkWithTagsToNAND)(struct yaffs_DeviceStruct *dev,int chunkInNAND, const __u8 *data, yaffs_ExtendedTags *tags);
+ int (*writeChunkWithTagsToNAND)(struct yaffs_DeviceStruct *dev,int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *tags);
int (*readChunkWithTagsFromNAND)(struct yaffs_DeviceStruct *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags);
int (*markNANDBlockBad)(struct yaffs_DeviceStruct *dev, int blockNo);
int (*queryNANDBlock)(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber);
int isMounted;
+ // Stuff to support block offsetting to support start block zero
+ int internalStartBlock;
+ int internalEndBlock;
+ int blockOffset;
+ int chunkOffset;
+
// Block Info
yaffs_BlockInfo *blockInfo;
__u8 *chunkBits; // bitmap of chunks in use
int nFreeTnodes;
yaffs_TnodeList *allocatedTnodeList;
+ int isDoingGC;
int nObjectsCreated;
yaffs_Object *freeObjects;
// Function to manipulate block info
static Y_INLINE yaffs_BlockInfo* yaffs_GetBlockInfo(yaffs_Device *dev, int blk)
{
- if(blk < dev->startBlock || blk > dev->endBlock)
+ if(blk < dev->internalStartBlock || blk > dev->internalEndBlock)
{
T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),blk));
YBUG();
}
- return &dev->blockInfo[blk - dev->startBlock];
+ return &dev->blockInfo[blk - dev->internalStartBlock];
}
// File operations
int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, __u32 offset, int nBytes);
-int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, __u32 offset, int nBytes);
+int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, __u32 offset, int nBytes, int writeThrough);
int yaffs_ResizeFile(yaffs_Object *obj, int newSize);
yaffs_Object *yaffs_MknodFile(yaffs_Object *parent,const YCHAR *name, __u32 mode, __u32 uid, __u32 gid);