u-boot: Update yaffs2 file system
This patch updates the yaffs2 in u-boot to correspond to
git://www.aleph1.co.uk/yaffs2
commit id 9ee5d0643e559568dbe62215f76e0a7bd5a63d93
Signed-off-by: Charles Manning <cdhmanning@gmail.com>
diff --git a/fs/yaffs2/yaffs_guts.h b/fs/yaffs2/yaffs_guts.h
index 1f75efd..e3558c5 100644
--- a/fs/yaffs2/yaffs_guts.h
+++ b/fs/yaffs2/yaffs_guts.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -16,7 +16,6 @@
#ifndef __YAFFS_GUTS_H__
#define __YAFFS_GUTS_H__
-#include "devextras.h"
#include "yportenv.h"
#define YAFFS_OK 1
@@ -24,35 +23,48 @@
/* Give us a Y=0x59,
* Give us an A=0x41,
- * Give us an FF=0xFF
+ * Give us an FF=0xff
* Give us an S=0x53
* And what have we got...
*/
-#define YAFFS_MAGIC 0x5941FF53
+#define YAFFS_MAGIC 0x5941ff53
-#define YAFFS_NTNODES_LEVEL0 16
+/*
+ * Tnodes form a tree with the tnodes in "levels"
+ * Levels greater than 0 hold 8 slots which point to other tnodes.
+ * Those at level 0 hold 16 slots which point to chunks in NAND.
+ *
+ * A maximum level of 8 thust supports files of size up to:
+ *
+ * 2^(3*MAX_LEVEL+4)
+ *
+ * Thus a max level of 8 supports files with up to 2^^28 chunks which gives
+ * a maximum file size of arounf 51Gbytees with 2k chunks.
+ */
+#define YAFFS_NTNODES_LEVEL0 16
#define YAFFS_TNODES_LEVEL0_BITS 4
#define YAFFS_TNODES_LEVEL0_MASK 0xf
-#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2)
-#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1)
+#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2)
+#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1)
#define YAFFS_TNODES_INTERNAL_MASK 0x7
-#define YAFFS_TNODES_MAX_LEVEL 6
+#define YAFFS_TNODES_MAX_LEVEL 8
+#define YAFFS_TNODES_MAX_BITS (YAFFS_TNODES_LEVEL0_BITS + \
+ YAFFS_TNODES_INTERNAL_BITS * \
+ YAFFS_TNODES_MAX_LEVEL)
+#define YAFFS_MAX_CHUNK_ID ((1 << YAFFS_TNODES_MAX_BITS) - 1)
-#ifndef CONFIG_YAFFS_NO_YAFFS1
+/* Constants for YAFFS1 mode */
#define YAFFS_BYTES_PER_SPARE 16
#define YAFFS_BYTES_PER_CHUNK 512
#define YAFFS_CHUNK_SIZE_SHIFT 9
#define YAFFS_CHUNKS_PER_BLOCK 32
-#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK)
-#endif
+#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK)
-#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024
+#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024
#define YAFFS_MIN_YAFFS2_SPARE_SIZE 32
-#define YAFFS_MAX_CHUNK_ID 0x000FFFFF
-#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF
#define YAFFS_ALLOCATION_NOBJECTS 100
#define YAFFS_ALLOCATION_NTNODES 100
@@ -60,10 +72,12 @@
#define YAFFS_NOBJECT_BUCKETS 256
-
#define YAFFS_OBJECT_SPACE 0x40000
+#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE - 1)
-#define YAFFS_CHECKPOINT_VERSION 3
+/* Binary data version stamps */
+#define YAFFS_SUMMARY_VERSION 1
+#define YAFFS_CHECKPOINT_VERSION 6
#ifdef CONFIG_YAFFS_UNICODE
#define YAFFS_MAX_NAME_LENGTH 127
@@ -81,16 +95,16 @@
#define YAFFS_OBJECTID_UNLINKED 3
#define YAFFS_OBJECTID_DELETED 4
-/* Sseudo object ids for checkpointing */
-#define YAFFS_OBJECTID_SB_HEADER 0x10
-#define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20
-#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
+/* Fake object Id for summary data */
+#define YAFFS_OBJECTID_SUMMARY 0x10
-/* */
+/* Pseudo object ids for checkpointing */
+#define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20
+#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
#define YAFFS_MAX_SHORT_OP_CACHES 20
-#define YAFFS_N_TEMP_BUFFERS 4
+#define YAFFS_N_TEMP_BUFFERS 6
/* We limit the number attempts at sucessfully saving a chunk of data.
* Small-page devices have 32 pages per block; large-page devices have 64.
@@ -102,142 +116,136 @@
* The range is limited slightly to help distinguish bad numbers from good.
* This also allows us to perhaps in the future use special numbers for
* special purposes.
- * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years,
+ * EFFFFF00 allows the allocation of 8 blocks/second (~1Mbytes) for 15 years,
* and is a larger number than the lifetime of a 2GB device.
*/
#define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000
-#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00
+#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xefffff00
+
+/* Special sequence number for bad block that failed to be marked bad */
+#define YAFFS_SEQUENCE_BAD_BLOCK 0xffff0000
/* ChunkCache is used for short read/write operations.*/
-typedef struct {
- struct yaffs_ObjectStruct *object;
- int chunkId;
- int lastUse;
+struct yaffs_cache {
+ struct yaffs_obj *object;
+ int chunk_id;
+ int last_use;
int dirty;
- int nBytes; /* Only valid if the cache is dirty */
+ int n_bytes; /* Only valid if the cache is dirty */
int locked; /* Can't push out or flush while locked. */
-#ifdef CONFIG_YAFFS_YAFFS2
- __u8 *data;
-#else
- __u8 data[YAFFS_BYTES_PER_CHUNK];
-#endif
-} yaffs_ChunkCache;
+ u8 *data;
+};
-
-
-/* Tags structures in RAM
- * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise
- * the structure size will get blown out.
+/* yaffs1 tags structures in RAM
+ * NB This uses bitfield. Bitfields should not straddle a u32 boundary
+ * otherwise the structure size will get blown out.
*/
-#ifndef CONFIG_YAFFS_NO_YAFFS1
-typedef struct {
- unsigned chunkId:20;
- unsigned serialNumber:2;
- unsigned byteCount:10;
- unsigned objectId:18;
+struct yaffs_tags {
+ unsigned chunk_id:20;
+ unsigned serial_number:2;
+ unsigned n_bytes_lsb:10;
+ unsigned obj_id:18;
unsigned ecc:12;
- unsigned unusedStuff:2;
+ unsigned n_bytes_msb:2;
+};
-} yaffs_Tags;
+union yaffs_tags_union {
+ struct yaffs_tags as_tags;
+ u8 as_bytes[8];
+};
-typedef union {
- yaffs_Tags asTags;
- __u8 asBytes[8];
-} yaffs_TagsUnion;
-
-#endif
/* Stuff used for extended tags in YAFFS2 */
-typedef enum {
+enum yaffs_ecc_result {
YAFFS_ECC_RESULT_UNKNOWN,
YAFFS_ECC_RESULT_NO_ERROR,
YAFFS_ECC_RESULT_FIXED,
YAFFS_ECC_RESULT_UNFIXED
-} yaffs_ECCResult;
+};
-typedef enum {
+enum yaffs_obj_type {
YAFFS_OBJECT_TYPE_UNKNOWN,
YAFFS_OBJECT_TYPE_FILE,
YAFFS_OBJECT_TYPE_SYMLINK,
YAFFS_OBJECT_TYPE_DIRECTORY,
YAFFS_OBJECT_TYPE_HARDLINK,
YAFFS_OBJECT_TYPE_SPECIAL
-} yaffs_ObjectType;
+};
#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL
-typedef struct {
-
- unsigned validMarker0;
- unsigned chunkUsed; /* Status of the chunk: used or unused */
- unsigned objectId; /* If 0 then this is not part of an object (unused) */
- unsigned chunkId; /* If 0 then this is a header, else a data chunk */
- unsigned byteCount; /* Only valid for data chunks */
+struct yaffs_ext_tags {
+ unsigned chunk_used; /* Status of the chunk: used or unused */
+ unsigned obj_id; /* If 0 this is not used */
+ unsigned chunk_id; /* If 0 this is a header, else a data chunk */
+ unsigned n_bytes; /* Only valid for data chunks */
/* The following stuff only has meaning when we read */
- yaffs_ECCResult eccResult;
- unsigned blockBad;
+ enum yaffs_ecc_result ecc_result;
+ unsigned block_bad;
/* YAFFS 1 stuff */
- unsigned chunkDeleted; /* The chunk is marked deleted */
- unsigned serialNumber; /* Yaffs1 2-bit serial number */
+ unsigned is_deleted; /* The chunk is marked deleted */
+ unsigned serial_number; /* Yaffs1 2-bit serial number */
/* YAFFS2 stuff */
- unsigned sequenceNumber; /* The sequence number of this block */
+ unsigned seq_number; /* The sequence number of this block */
/* Extra info if this is an object header (YAFFS2 only) */
- 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? */
+ unsigned extra_available; /* Extra info available if not zero */
+ unsigned extra_parent_id; /* The parent object */
+ unsigned extra_is_shrink; /* Is it a shrink header? */
+ unsigned extra_shadows; /* Does this shadow another object? */
- yaffs_ObjectType extraObjectType; /* What object type? */
+ enum yaffs_obj_type extra_obj_type; /* What object type? */
- unsigned extraFileLength; /* Length if it is a file */
- unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */
-
- unsigned validMarker1;
-
-} yaffs_ExtendedTags;
+ loff_t extra_file_size; /* Length if it is a file */
+ unsigned extra_equiv_id; /* Equivalent object for a hard link */
+};
/* Spare structure for YAFFS1 */
-typedef struct {
- __u8 tagByte0;
- __u8 tagByte1;
- __u8 tagByte2;
- __u8 tagByte3;
- __u8 pageStatus; /* set to 0 to delete the chunk */
- __u8 blockStatus;
- __u8 tagByte4;
- __u8 tagByte5;
- __u8 ecc1[3];
- __u8 tagByte6;
- __u8 tagByte7;
- __u8 ecc2[3];
-} yaffs_Spare;
+struct yaffs_spare {
+ u8 tb0;
+ u8 tb1;
+ u8 tb2;
+ u8 tb3;
+ u8 page_status; /* set to 0 to delete the chunk */
+ u8 block_status;
+ u8 tb4;
+ u8 tb5;
+ u8 ecc1[3];
+ u8 tb6;
+ u8 tb7;
+ u8 ecc2[3];
+};
/*Special structure for passing through to mtd */
-struct yaffs_NANDSpare {
- yaffs_Spare spare;
+struct yaffs_nand_spare {
+ struct yaffs_spare spare;
int eccres1;
int eccres2;
};
/* Block data in RAM */
-typedef enum {
+enum yaffs_block_state {
YAFFS_BLOCK_STATE_UNKNOWN = 0,
YAFFS_BLOCK_STATE_SCANNING,
- YAFFS_BLOCK_STATE_NEEDS_SCANNING,
- /* The block might have something on it (ie it is allocating or full, perhaps empty)
- * but it needs to be scanned to determine its true state.
- * This state is only valid during yaffs_Scan.
- * NB We tolerate empty because the pre-scanner might be incapable of deciding
- * However, if this state is returned on a YAFFS2 device, then we expect a sequence number
+ /* Being scanned */
+
+ YAFFS_BLOCK_STATE_NEEDS_SCAN,
+ /* The block might have something on it (ie it is allocating or full,
+ * perhaps empty) but it needs to be scanned to determine its true
+ * state.
+ * This state is only valid during scanning.
+ * NB We tolerate empty because the pre-scanner might be incapable of
+ * deciding
+ * However, if this state is returned on a YAFFS2 device,
+ * then we expect a sequence number
*/
YAFFS_BLOCK_STATE_EMPTY,
@@ -247,123 +255,109 @@
/* This block is partially allocated.
* At least one page holds valid data.
* This is the one currently being used for page
- * allocation. Should never be more than one of these
+ * allocation. Should never be more than one of these.
+ * If a block is only partially allocated at mount it is treated as
+ * full.
*/
YAFFS_BLOCK_STATE_FULL,
/* All the pages in this block have been allocated.
+ * If a block was only partially allocated when mounted we treat
+ * it as fully allocated.
*/
YAFFS_BLOCK_STATE_DIRTY,
- /* All pages have been allocated and deleted.
+ /* The block was full and now all chunks have been deleted.
* Erase me, reuse me.
*/
YAFFS_BLOCK_STATE_CHECKPOINT,
- /* This block is assigned to holding checkpoint data.
- */
+ /* This block is assigned to holding checkpoint data. */
YAFFS_BLOCK_STATE_COLLECTING,
/* This block is being garbage collected */
YAFFS_BLOCK_STATE_DEAD
- /* This block has failed and is not in use */
-} yaffs_BlockState;
+ /* This block has failed and is not in use */
+};
#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1)
+struct yaffs_block_info {
-typedef struct {
+ int soft_del_pages:10; /* number of soft deleted pages */
+ int pages_in_use:10; /* number of pages in use */
+ unsigned block_state:4; /* One of the above block states. */
+ /* NB use unsigned because enum is sometimes
+ * an int */
+ u32 needs_retiring:1; /* Data has failed on this block, */
+ /*need to get valid data off and retire*/
+ u32 skip_erased_check:1;/* Skip the erased check on this block */
+ u32 gc_prioritise:1; /* An ECC check or blank check has failed.
+ Block should be prioritised for GC */
+ u32 chunk_error_strikes:3; /* How many times we've had ecc etc
+ failures on this block and tried to reuse it */
+ u32 has_summary:1; /* The block has a summary */
- int softDeletions:10; /* number of soft deleted pages */
- int pagesInUse:10; /* number of pages in use */
- unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
- __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */
- /* and retire the block. */
- __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
- __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block.
- It should be prioritised for GC */
- __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
+ u32 has_shrink_hdr:1; /* This block has at least one shrink header */
+ u32 seq_number; /* block sequence number for yaffs2 */
-#ifdef CONFIG_YAFFS_YAFFS2
- __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
- __u32 sequenceNumber; /* block sequence number for yaffs2 */
-#endif
-
-} yaffs_BlockInfo;
+};
/* -------------------------- Object structure -------------------------------*/
/* This is the object structure as stored on NAND */
-typedef struct {
- yaffs_ObjectType type;
+struct yaffs_obj_hdr {
+ enum yaffs_obj_type type;
/* Apply to everything */
- int parentObjectId;
- __u16 sum__NoLongerUsed; /* checksum of name. No longer used */
+ int parent_obj_id;
+ u16 sum_no_longer_used; /* checksum of name. No longer used */
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
- /* Thes following apply to directories, files, symlinks - not hard links */
- __u32 yst_mode; /* protection */
+ /* The following apply to all object types except for hard links */
+ u32 yst_mode; /* protection */
-#ifdef CONFIG_YAFFS_WINCE
- __u32 notForWinCE[5];
-#else
- __u32 yst_uid;
- __u32 yst_gid;
- __u32 yst_atime;
- __u32 yst_mtime;
- __u32 yst_ctime;
-#endif
+ u32 yst_uid;
+ u32 yst_gid;
+ u32 yst_atime;
+ u32 yst_mtime;
+ u32 yst_ctime;
/* File size applies to files only */
- int fileSize;
+ u32 file_size_low;
/* Equivalent object id applies to hard links only. */
- int equivalentObjectId;
+ int equiv_id;
/* Alias is for symlinks only. */
YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1];
- __u32 yst_rdev; /* device stuff for block and char devices (major/min) */
+ u32 yst_rdev; /* stuff for block and char devices (major/min) */
-#ifdef CONFIG_YAFFS_WINCE
- __u32 win_ctime[2];
- __u32 win_atime[2];
- __u32 win_mtime[2];
- __u32 roomToGrow[4];
-#else
- __u32 roomToGrow[10];
-#endif
+ u32 win_ctime[2];
+ u32 win_atime[2];
+ u32 win_mtime[2];
- int shadowsObject; /* This object header shadows the specified object if > 0 */
+ u32 inband_shadowed_obj_id;
+ u32 inband_is_shrink;
- /* isShrink applies to object headers written when we shrink the file (ie resize) */
- __u32 isShrink;
+ u32 file_size_high;
+ u32 reserved[1];
+ int shadows_obj; /* This object header shadows the
+ specified object if > 0 */
-} yaffs_ObjectHeader;
+ /* is_shrink applies to object headers written when wemake a hole. */
+ u32 is_shrink;
+
+};
/*--------------------------- Tnode -------------------------- */
-union yaffs_Tnode_union {
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1];
-#else
- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL];
-#endif
-/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */
-
+struct yaffs_tnode {
+ struct yaffs_tnode *internal[YAFFS_NTNODES_INTERNAL];
};
-typedef union yaffs_Tnode_union yaffs_Tnode;
-
-struct yaffs_TnodeList_struct {
- struct yaffs_TnodeList_struct *next;
- yaffs_Tnode *tnodes;
-};
-
-typedef struct yaffs_TnodeList_struct yaffs_TnodeList;
-
/*------------------------ Object -----------------------------*/
/* An object can be one of:
* - a directory (no data, has children links
@@ -372,537 +366,608 @@
* - a hard link
*/
-typedef struct {
- __u32 fileSize;
- __u32 scannedFileSize;
- __u32 shrinkSize;
- int topLevel;
- yaffs_Tnode *top;
-} yaffs_FileStructure;
+struct yaffs_file_var {
+ loff_t file_size;
+ loff_t scanned_size;
+ loff_t shrink_size;
+ int top_level;
+ struct yaffs_tnode *top;
+};
-typedef struct {
+struct yaffs_dir_var {
struct list_head children; /* list of child links */
-} yaffs_DirectoryStructure;
+ struct list_head dirty; /* Entry for list of dirty directories */
+};
-typedef struct {
+struct yaffs_symlink_var {
YCHAR *alias;
-} yaffs_SymLinkStructure;
+};
-typedef struct {
- struct yaffs_ObjectStruct *equivalentObject;
- __u32 equivalentObjectId;
-} yaffs_HardLinkStructure;
+struct yaffs_hardlink_var {
+ struct yaffs_obj *equiv_obj;
+ u32 equiv_id;
+};
-typedef union {
- yaffs_FileStructure fileVariant;
- yaffs_DirectoryStructure directoryVariant;
- yaffs_SymLinkStructure symLinkVariant;
- yaffs_HardLinkStructure hardLinkVariant;
-} yaffs_ObjectVariant;
+union yaffs_obj_var {
+ struct yaffs_file_var file_variant;
+ struct yaffs_dir_var dir_variant;
+ struct yaffs_symlink_var symlink_variant;
+ struct yaffs_hardlink_var hardlink_variant;
+};
-struct yaffs_ObjectStruct {
- __u8 deleted:1; /* This should only apply to unlinked files. */
- __u8 softDeleted:1; /* it has also been soft deleted */
- __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/
- __u8 fake:1; /* A fake object has no presence on NAND. */
- __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */
- __u8 unlinkAllowed:1;
- __u8 dirty:1; /* the object needs to be written to flash */
- __u8 valid:1; /* When the file system is being loaded up, this
+struct yaffs_obj {
+ u8 deleted:1; /* This should only apply to unlinked files. */
+ u8 soft_del:1; /* it has also been soft deleted */
+ u8 unlinked:1; /* An unlinked file.*/
+ u8 fake:1; /* A fake object has no presence on NAND. */
+ u8 rename_allowed:1; /* Some objects cannot be renamed. */
+ u8 unlink_allowed:1;
+ u8 dirty:1; /* the object needs to be written to flash */
+ u8 valid:1; /* When the file system is being loaded up, this
* object might be created before the data
- * is available (ie. file data records appear before the header).
+ * is available
+ * ie. file data chunks encountered before
+ * the header.
*/
- __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */
+ u8 lazy_loaded:1; /* This object has been lazy loaded and
+ * is missing some detail */
- __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is
- * still in the inode cache. Free of object is defered.
+ u8 defered_free:1; /* Object is removed from NAND, but is
+ * still in the inode cache.
+ * Free of object is defered.
* until the inode is released.
*/
+ u8 being_created:1; /* This object is still being created
+ * so skip some verification checks. */
+ u8 is_shadowed:1; /* This object is shadowed on the way
+ * to being renamed. */
- __u8 serial; /* serial number of chunk in NAND. Cached here */
- __u16 sum; /* sum of the name to speed searching */
+ u8 xattr_known:1; /* We know if this has object has xattribs
+ * or not. */
+ u8 has_xattr:1; /* This object has xattribs.
+ * Only valid if xattr_known. */
- struct yaffs_DeviceStruct *myDev; /* The device I'm on */
+ u8 serial; /* serial number of chunk in NAND.*/
+ u16 sum; /* sum of the name to speed searching */
- struct list_head hashLink; /* list of objects in this hash bucket */
+ struct yaffs_dev *my_dev; /* The device I'm on */
- struct list_head hardLinks; /* all the equivalent hard linked objects */
+ struct list_head hash_link; /* list of objects in hash bucket */
+
+ struct list_head hard_links; /* hard linked object chain*/
/* directory structure stuff */
/* also used for linking up the free list */
- struct yaffs_ObjectStruct *parent;
+ struct yaffs_obj *parent;
struct list_head siblings;
/* Where's my object header in NAND? */
- int chunkId;
+ int hdr_chunk;
- int nDataChunks; /* Number of data chunks attached to the file. */
+ int n_data_chunks; /* Number of data chunks for this file. */
- __u32 objectId; /* the object id value */
+ u32 obj_id; /* the object id value */
- __u32 yst_mode;
+ u32 yst_mode;
-#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
- YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1];
-#endif
-
-/* XXX U-BOOT XXX */
-/* #ifndef __KERNEL__ */
- __u32 inUse;
-/* #endif */
+ YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1];
#ifdef CONFIG_YAFFS_WINCE
- __u32 win_ctime[2];
- __u32 win_mtime[2];
- __u32 win_atime[2];
+ u32 win_ctime[2];
+ u32 win_mtime[2];
+ u32 win_atime[2];
#else
- __u32 yst_uid;
- __u32 yst_gid;
- __u32 yst_atime;
- __u32 yst_mtime;
- __u32 yst_ctime;
+ u32 yst_uid;
+ u32 yst_gid;
+ u32 yst_atime;
+ u32 yst_mtime;
+ u32 yst_ctime;
#endif
- __u32 yst_rdev;
+ u32 yst_rdev;
-/* XXX U-BOOT XXX */
-/* #ifndef __KERNEL__ */
- struct inode *myInode;
-/* #endif */
+ void *my_inode;
- yaffs_ObjectType variantType;
+ enum yaffs_obj_type variant_type;
- yaffs_ObjectVariant variant;
+ union yaffs_obj_var variant;
};
-typedef struct yaffs_ObjectStruct yaffs_Object;
-
-struct yaffs_ObjectList_struct {
- yaffs_Object *objects;
- struct yaffs_ObjectList_struct *next;
-};
-
-typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
-
-typedef struct {
+struct yaffs_obj_bucket {
struct list_head list;
int count;
-} yaffs_ObjectBucket;
+};
-
-/* yaffs_CheckpointObject holds the definition of an object as dumped
+/* yaffs_checkpt_obj holds the definition of an object as dumped
* by checkpointing.
*/
-typedef struct {
- int structType;
- __u32 objectId;
- __u32 parentId;
- int chunkId;
-
- yaffs_ObjectType variantType:3;
- __u8 deleted:1;
- __u8 softDeleted:1;
- __u8 unlinked:1;
- __u8 fake:1;
- __u8 renameAllowed:1;
- __u8 unlinkAllowed:1;
- __u8 serial;
-
- int nDataChunks;
- __u32 fileSizeOrEquivalentObjectId;
-
-}yaffs_CheckpointObject;
+struct yaffs_checkpt_obj {
+ int struct_type;
+ u32 obj_id;
+ u32 parent_id;
+ int hdr_chunk;
+ enum yaffs_obj_type variant_type:3;
+ u8 deleted:1;
+ u8 soft_del:1;
+ u8 unlinked:1;
+ u8 fake:1;
+ u8 rename_allowed:1;
+ u8 unlink_allowed:1;
+ u8 serial;
+ int n_data_chunks;
+ loff_t size_or_equiv_obj;
+};
/*--------------------- Temporary buffers ----------------
*
- * These are chunk-sized working buffers. Each device has a few
+ * These are chunk-sized working buffers. Each device has a few.
*/
-typedef struct {
- __u8 *buffer;
- int line; /* track from whence this buffer was allocated */
- int maxLine;
-} yaffs_TempBuffer;
+struct yaffs_buffer {
+ u8 *buffer;
+ int in_use;
+};
/*----------------- Device ---------------------------------*/
-struct yaffs_DeviceStruct {
- struct list_head devList;
- const char *name;
+struct yaffs_param {
+ const YCHAR *name;
- /* Entry parameters set up way early. Yaffs sets up the rest.*/
- int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
- int nChunksPerBlock; /* does not need to be a power of 2 */
- int nBytesPerSpare; /* spare area size */
- int startBlock; /* Start block we're allowed to use */
- int endBlock; /* End block we're allowed to use */
- int nReservedBlocks; /* We want this tuneable so that we can reduce */
- /* reserved blocks on NOR and RAM. */
-
-
- /* Stuff used by the shared space checkpointing mechanism */
- /* If this value is zero, then this mechanism is disabled */
-
- int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
-
-
-
-
- int nShortOpCaches; /* If <= 0, then short op caching is disabled, else
- * the number of short op caches (don't use too many)
- */
-
- int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */
-
- int useNANDECC; /* Flag to decide whether or not to use NANDECC */
-
- void *genericDevice; /* Pointer to device context
- * On an mtd this holds the mtd pointer.
- */
- void *superBlock;
-
- /* NAND access functions (Must be set before calling YAFFS)*/
-
- int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
- int chunkInNAND, const __u8 * data,
- const yaffs_Spare * spare);
- int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
- int chunkInNAND, __u8 * data,
- yaffs_Spare * spare);
- int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
- int blockInNAND);
- int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
-
-#ifdef CONFIG_YAFFS_YAFFS2
- 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);
-#endif
-
- int isYaffs2;
-
- /* The removeObjectCallback function must be supplied by OS flavours that
- * need it. The Linux kernel does not use this, but yaffs direct does use
- * it to implement the faster readdir
+ /*
+ * Entry parameters set up way early. Yaffs sets up the rest.
+ * The structure should be zeroed out before use so that unused
+ * and defualt values are zero.
*/
- void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
- /* Callback to mark the superblock dirsty */
- void (*markSuperBlockDirty)(void * superblock);
+ int inband_tags; /* Use unband tags */
+ u32 total_bytes_per_chunk; /* Should be >= 512, does not need to
+ be a power of 2 */
+ int chunks_per_block; /* does not need to be a power of 2 */
+ int spare_bytes_per_chunk; /* spare area size */
+ int start_block; /* Start block we're allowed to use */
+ int end_block; /* End block we're allowed to use */
+ int n_reserved_blocks; /* Tuneable so that we can reduce
+ * reserved blocks on NOR and RAM. */
- int wideTnodesDisabled; /* Set to disable wide tnodes */
+ int n_caches; /* If <= 0, then short op caching is disabled,
+ * else the number of short op caches.
+ */
+ int use_nand_ecc; /* Flag to decide whether or not to use
+ * NAND driver ECC on data (yaffs1) */
+ int tags_9bytes; /* Use 9 byte tags */
+ int no_tags_ecc; /* Flag to decide whether or not to do ECC
+ * on packed tags (yaffs2) */
+ int is_yaffs2; /* Use yaffs2 mode on this device */
- /* End of stuff that must be set before initialisation. */
+ int empty_lost_n_found; /* Auto-empty lost+found directory on mount */
+
+ int refresh_period; /* How often to check for a block refresh */
/* Checkpoint control. Can be set before or after initialisation */
- __u8 skipCheckpointRead;
- __u8 skipCheckpointWrite;
+ u8 skip_checkpt_rd;
+ u8 skip_checkpt_wr;
+
+ int enable_xattr; /* Enable xattribs */
+
+ /* NAND access functions (Must be set before calling YAFFS) */
+
+ int (*write_chunk_fn) (struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ const struct yaffs_spare *spare);
+ int (*read_chunk_fn) (struct yaffs_dev *dev,
+ int nand_chunk, u8 *data,
+ struct yaffs_spare *spare);
+ int (*erase_fn) (struct yaffs_dev *dev, int flash_block);
+ int (*initialise_flash_fn) (struct yaffs_dev *dev);
+ int (*deinitialise_flash_fn) (struct yaffs_dev *dev);
+
+ /* yaffs2 mode functions */
+ int (*write_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ const struct yaffs_ext_tags *tags);
+ int (*read_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, u8 *data,
+ struct yaffs_ext_tags *tags);
+ int (*bad_block_fn) (struct yaffs_dev *dev, int block_no);
+ int (*query_block_fn) (struct yaffs_dev *dev, int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number);
+
+ /* The remove_obj_fn function must be supplied by OS flavours that
+ * need it.
+ * yaffs direct uses it to implement the faster readdir.
+ * Linux uses it to protect the directory during unlocking.
+ */
+ void (*remove_obj_fn) (struct yaffs_obj *obj);
+
+ /* Callback to mark the superblock dirty */
+ void (*sb_dirty_fn) (struct yaffs_dev *dev);
+
+ /* Callback to control garbage collection. */
+ unsigned (*gc_control) (struct yaffs_dev *dev);
+
+ /* Debug control flags. Don't use unless you know what you're doing */
+ int use_header_file_size; /* Flag to determine if we should use
+ * file sizes from the header */
+ int disable_lazy_load; /* Disable lazy loading on this device */
+ int wide_tnodes_disabled; /* Set to disable wide tnodes */
+ int disable_soft_del; /* yaffs 1 only: Set to disable the use of
+ * softdeletion. */
+
+ int defered_dir_update; /* Set to defer directory updates */
+
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+ int auto_unicode;
+#endif
+ int always_check_erased; /* Force chunk erased check always on */
+
+ int disable_summary;
+
+ int max_objects; /*
+ * Set to limit the number of objects created.
+ * 0 = no limit.
+ */
+};
+
+struct yaffs_dev {
+ struct yaffs_param param;
+
+ /* Context storage. Holds extra OS specific data for this device */
+
+ void *os_context;
+ void *driver_context;
+
+ struct list_head dev_list;
/* Runtime parameters. Set up by YAFFS. */
+ int data_bytes_per_chunk;
- __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */
- __u16 chunkGroupSize; /* == 2^^chunkGroupBits */
+ /* Non-wide tnode stuff */
+ u16 chunk_grp_bits; /* Number of bits that need to be resolved if
+ * the tnodes are not wide enough.
+ */
+ u16 chunk_grp_size; /* == 2^^chunk_grp_bits */
/* Stuff to support wide tnodes */
- __u32 tnodeWidth;
- __u32 tnodeMask;
+ u32 tnode_width;
+ u32 tnode_mask;
+ u32 tnode_size;
- /* Stuff to support various file offses to chunk/offset translations */
- /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
- __u32 crumbMask;
- __u32 crumbShift;
- __u32 crumbsPerChunk;
+ /* Stuff for figuring out file offset to chunk conversions */
+ u32 chunk_shift; /* Shift value */
+ u32 chunk_div; /* Divisor after shifting: 1 for 2^n sizes */
+ u32 chunk_mask; /* Mask to use for power-of-2 case */
- /* Straight shifting for nDataBytesPerChunk being a power of 2 */
- __u32 chunkShift;
- __u32 chunkMask;
-
-
-/* XXX U-BOOT XXX */
-#if 0
-#ifndef __KERNEL__
-
- struct semaphore sem; /* Semaphore for waiting on erasure.*/
- struct semaphore grossLock; /* Gross locking semaphore */
- void (*putSuperFunc) (struct super_block * sb);
-#endif
-#endif
- __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
- * at compile time so we have to allocate it.
- */
-
- int isMounted;
-
- int isCheckpointed;
-
+ int is_mounted;
+ int read_only;
+ int is_checkpointed;
/* Stuff to support block offsetting to support start block zero */
- int internalStartBlock;
- int internalEndBlock;
- int blockOffset;
- int chunkOffset;
-
+ int internal_start_block;
+ int internal_end_block;
+ int block_offset;
+ int chunk_offset;
/* Runtime checkpointing stuff */
- int checkpointPageSequence; /* running sequence number of checkpoint pages */
- int checkpointByteCount;
- int checkpointByteOffset;
- __u8 *checkpointBuffer;
- int checkpointOpenForWrite;
- int blocksInCheckpoint;
- int checkpointCurrentChunk;
- int checkpointCurrentBlock;
- int checkpointNextBlock;
- int *checkpointBlockList;
- int checkpointMaxBlocks;
- __u32 checkpointSum;
- __u32 checkpointXor;
+ int checkpt_page_seq; /* running sequence number of checkpt pages */
+ int checkpt_byte_count;
+ int checkpt_byte_offs;
+ u8 *checkpt_buffer;
+ int checkpt_open_write;
+ int blocks_in_checkpt;
+ int checkpt_cur_chunk;
+ int checkpt_cur_block;
+ int checkpt_next_block;
+ int *checkpt_block_list;
+ int checkpt_max_blocks;
+ u32 checkpt_sum;
+ u32 checkpt_xor;
+
+ int checkpoint_blocks_required; /* Number of blocks needed to store
+ * current checkpoint set */
/* Block Info */
- yaffs_BlockInfo *blockInfo;
- __u8 *chunkBits; /* bitmap of chunks in use */
- unsigned blockInfoAlt:1; /* was allocated using alternative strategy */
- unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */
- int chunkBitmapStride; /* Number of bytes of chunkBits per block.
- * Must be consistent with nChunksPerBlock.
+ struct yaffs_block_info *block_info;
+ u8 *chunk_bits; /* bitmap of chunks in use */
+ unsigned block_info_alt:1; /* allocated using alternative alloc */
+ unsigned chunk_bits_alt:1; /* allocated using alternative alloc */
+ int chunk_bit_stride; /* Number of bytes of chunk_bits per block.
+ * Must be consistent with chunks_per_block.
*/
- int nErasedBlocks;
- int allocationBlock; /* Current block being allocated off */
- __u32 allocationPage;
- int allocationBlockFinder; /* Used to search for next allocation block */
+ int n_erased_blocks;
+ int alloc_block; /* Current block being allocated off */
+ u32 alloc_page;
+ int alloc_block_finder; /* Used to search for next allocation block */
- /* Runtime state */
- int nTnodesCreated;
- yaffs_Tnode *freeTnodes;
- int nFreeTnodes;
- yaffs_TnodeList *allocatedTnodeList;
+ /* Object and Tnode memory management */
+ void *allocator;
+ int n_obj;
+ int n_tnodes;
- int isDoingGC;
+ int n_hardlinks;
- int nObjectsCreated;
- yaffs_Object *freeObjects;
- int nFreeObjects;
+ struct yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS];
+ u32 bucket_finder;
- yaffs_ObjectList *allocatedObjectList;
+ int n_free_chunks;
- yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
+ /* Garbage collection control */
+ u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */
+ u32 n_clean_ups;
- int nFreeChunks;
-
- int currentDirtyChecker; /* Used to find current dirtiest block */
-
- __u32 *gcCleanupList; /* objects to delete at the end of a GC. */
- int nonAggressiveSkip; /* GC state/mode */
-
- /* Statistcs */
- int nPageWrites;
- int nPageReads;
- int nBlockErasures;
- int nErasureFailures;
- int nGCCopies;
- int garbageCollections;
- int passiveGarbageCollections;
- int nRetriedWrites;
- int nRetiredBlocks;
- int eccFixed;
- int eccUnfixed;
- int tagsEccFixed;
- int tagsEccUnfixed;
- int nDeletions;
- int nUnmarkedDeletions;
-
- int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
+ unsigned has_pending_prioritised_gc; /* We think this device might
+ have pending prioritised gcs */
+ unsigned gc_disable;
+ unsigned gc_block_finder;
+ unsigned gc_dirtiest;
+ unsigned gc_pages_in_use;
+ unsigned gc_not_done;
+ unsigned gc_block;
+ unsigned gc_chunk;
+ unsigned gc_skip;
+ struct yaffs_summary_tags *gc_sum_tags;
/* Special directories */
- yaffs_Object *rootDir;
- yaffs_Object *lostNFoundDir;
+ struct yaffs_obj *root_dir;
+ struct yaffs_obj *lost_n_found;
- /* Buffer areas for storing data to recover from write failures TODO
- * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
- * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK];
- */
+ int buffered_block; /* Which block is buffered here? */
+ int doing_buffered_block_rewrite;
- int bufferedBlock; /* Which block is buffered here? */
- int doingBufferedBlockRewrite;
+ struct yaffs_cache *cache;
+ int cache_last_use;
- yaffs_ChunkCache *srCache;
- int srLastUse;
+ /* Stuff for background deletion and unlinked files. */
+ struct yaffs_obj *unlinked_dir; /* Directory where unlinked and deleted
+ files live. */
+ struct yaffs_obj *del_dir; /* Directory where deleted objects are
+ sent to disappear. */
+ struct yaffs_obj *unlinked_deletion; /* Current file being
+ background deleted. */
+ int n_deleted_files; /* Count of files awaiting deletion; */
+ int n_unlinked_files; /* Count of unlinked files. */
+ int n_bg_deletions; /* Count of background deletions. */
- int cacheHits;
-
- /* Stuff for background deletion and unlinked files.*/
- yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */
- yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */
- yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/
- int nDeletedFiles; /* Count of files awaiting deletion;*/
- int nUnlinkedFiles; /* Count of unlinked files. */
- int nBackgroundDeletions; /* Count of background deletions. */
-
-
- yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
- int maxTemp;
- int unmanagedTempAllocations;
- int unmanagedTempDeallocations;
+ /* Temporary buffer management */
+ struct yaffs_buffer temp_buffer[YAFFS_N_TEMP_BUFFERS];
+ int max_temp;
+ int temp_in_use;
+ int unmanaged_buffer_allocs;
+ int unmanaged_buffer_deallocs;
/* yaffs2 runtime stuff */
- unsigned sequenceNumber; /* Sequence number of currently allocating block */
- unsigned oldestDirtySequence;
+ unsigned seq_number; /* Sequence number of currently
+ allocating block */
+ unsigned oldest_dirty_seq;
+ unsigned oldest_dirty_block;
+
+ /* Block refreshing */
+ int refresh_skip; /* A skip down counter.
+ * Refresh happens when this gets to zero. */
+
+ /* Dirty directory handling */
+ struct list_head dirty_dirs; /* List of dirty directories */
+
+ /* Summary */
+ int chunks_per_summary;
+ struct yaffs_summary_tags *sum_tags;
+
+ /* Statistics */
+ u32 n_page_writes;
+ u32 n_page_reads;
+ u32 n_erasures;
+ u32 n_erase_failures;
+ u32 n_gc_copies;
+ u32 all_gcs;
+ u32 passive_gc_count;
+ u32 oldest_dirty_gc_count;
+ u32 n_gc_blocks;
+ u32 bg_gcs;
+ u32 n_retried_writes;
+ u32 n_retired_blocks;
+ u32 n_ecc_fixed;
+ u32 n_ecc_unfixed;
+ u32 n_tags_ecc_fixed;
+ u32 n_tags_ecc_unfixed;
+ u32 n_deletions;
+ u32 n_unmarked_deletions;
+ u32 refresh_count;
+ u32 cache_hits;
+ u32 tags_used;
+ u32 summary_used;
};
-typedef struct yaffs_DeviceStruct yaffs_Device;
-
-/* The static layout of bllock usage etc is stored in the super block header */
-typedef struct {
- int StructType;
- int version;
- int checkpointStartBlock;
- int checkpointEndBlock;
- int startBlock;
- int endBlock;
- int rfu[100];
-} yaffs_SuperBlockHeader;
-
-/* The CheckpointDevice structure holds the device information that changes at runtime and
- * must be preserved over unmount/mount cycles.
+/* The CheckpointDevice structure holds the device information that changes
+ *at runtime and must be preserved over unmount/mount cycles.
*/
-typedef struct {
- int structType;
- int nErasedBlocks;
- int allocationBlock; /* Current block being allocated off */
- __u32 allocationPage;
- int nFreeChunks;
+struct yaffs_checkpt_dev {
+ int struct_type;
+ int n_erased_blocks;
+ int alloc_block; /* Current block being allocated off */
+ u32 alloc_page;
+ int n_free_chunks;
- int nDeletedFiles; /* Count of files awaiting deletion;*/
- int nUnlinkedFiles; /* Count of unlinked files. */
- int nBackgroundDeletions; /* Count of background deletions. */
+ int n_deleted_files; /* Count of files awaiting deletion; */
+ int n_unlinked_files; /* Count of unlinked files. */
+ int n_bg_deletions; /* Count of background deletions. */
/* yaffs2 runtime stuff */
- unsigned sequenceNumber; /* Sequence number of currently allocating block */
- unsigned oldestDirtySequence;
+ unsigned seq_number; /* Sequence number of currently
+ * allocating block */
-} yaffs_CheckpointDevice;
+};
+struct yaffs_checkpt_validity {
+ int struct_type;
+ u32 magic;
+ u32 version;
+ u32 head;
+};
-typedef struct {
- int structType;
- __u32 magic;
- __u32 version;
- __u32 head;
-} yaffs_CheckpointValidity;
+struct yaffs_shadow_fixer {
+ int obj_id;
+ int shadowed_id;
+ struct yaffs_shadow_fixer *next;
+};
-/* Function to manipulate block info */
-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
-{
- 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->internalStartBlock];
-}
+/* Structure for doing xattr modifications */
+struct yaffs_xattr_mod {
+ int set; /* If 0 then this is a deletion */
+ const YCHAR *name;
+ const void *data;
+ int size;
+ int flags;
+ int result;
+};
/*----------------------- YAFFS Functions -----------------------*/
-int yaffs_GutsInitialise(yaffs_Device * dev);
-void yaffs_Deinitialise(yaffs_Device * dev);
+int yaffs_guts_initialise(struct yaffs_dev *dev);
+void yaffs_deinitialise(struct yaffs_dev *dev);
-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev);
+int yaffs_get_n_free_chunks(struct yaffs_dev *dev);
-int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
- yaffs_Object * newDir, const YCHAR * newName);
+int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name,
+ struct yaffs_obj *new_dir, const YCHAR * new_name);
-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name);
-int yaffs_DeleteFile(yaffs_Object * obj);
+int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name);
+int yaffs_del_obj(struct yaffs_obj *obj);
-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize);
-int yaffs_GetObjectFileLength(yaffs_Object * obj);
-int yaffs_GetObjectInode(yaffs_Object * obj);
-unsigned yaffs_GetObjectType(yaffs_Object * obj);
-int yaffs_GetObjectLinkCount(yaffs_Object * obj);
-
-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
+int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size);
+loff_t yaffs_get_obj_length(struct yaffs_obj *obj);
+int yaffs_get_obj_inode(struct yaffs_obj *obj);
+unsigned yaffs_get_obj_type(struct yaffs_obj *obj);
+int yaffs_get_obj_link_count(struct yaffs_obj *obj);
/* File operations */
-int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
- int nBytes);
-int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
- int nBytes, int writeThrough);
-int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
+int yaffs_file_rd(struct yaffs_obj *obj, u8 * buffer, loff_t offset,
+ int n_bytes);
+int yaffs_wr_file(struct yaffs_obj *obj, const u8 * buffer, loff_t offset,
+ int n_bytes, int write_trhrough);
+int yaffs_resize_file(struct yaffs_obj *obj, loff_t new_size);
-yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid);
-int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
+struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid);
+
+int yaffs_flush_file(struct yaffs_obj *obj, int update_time, int data_sync);
/* Flushing and checkpointing */
-void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
+void yaffs_flush_whole_cache(struct yaffs_dev *dev);
-int yaffs_CheckpointSave(yaffs_Device *dev);
-int yaffs_CheckpointRestore(yaffs_Device *dev);
+int yaffs_checkpoint_save(struct yaffs_dev *dev);
+int yaffs_checkpoint_restore(struct yaffs_dev *dev);
/* Directory operations */
-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid);
-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * theDir, const YCHAR * name);
-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
- int (*fn) (yaffs_Object *));
-
-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number);
+struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *parent, const YCHAR *name,
+ u32 mode, u32 uid, u32 gid);
+struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *the_dir,
+ const YCHAR *name);
+struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number);
/* Link operations */
-yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
- yaffs_Object * equivalentObject);
+struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR *name,
+ struct yaffs_obj *equiv_obj);
-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj);
+struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj);
/* Symlink operations */
-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid,
- const YCHAR * alias);
-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj);
+struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, const YCHAR *alias);
+YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj);
/* Special inodes (fifos, sockets and devices) */
-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
+struct yaffs_obj *yaffs_create_special(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, u32 rdev);
+
+int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR *name,
+ const void *value, int size, int flags);
+int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR *name, void *value,
+ int size);
+int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size);
+int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR *name);
/* Special directories */
-yaffs_Object *yaffs_Root(yaffs_Device * dev);
-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev);
+struct yaffs_obj *yaffs_root(struct yaffs_dev *dev);
+struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev);
-#ifdef CONFIG_YAFFS_WINCE
-/* CONFIG_YAFFS_WINCE special stuff */
-void yfsd_WinFileTimeNow(__u32 target[2]);
-#endif
+void yaffs_handle_defered_free(struct yaffs_obj *obj);
-/* XXX U-BOOT XXX */
-#if 0
-#ifndef __KERNEL__
-void yaffs_HandleDeferedFree(yaffs_Object * obj);
-#endif
-#endif
+void yaffs_update_dirty_dirs(struct yaffs_dev *dev);
+
+int yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency);
/* Debug dump */
-int yaffs_DumpObject(yaffs_Object * obj);
+int yaffs_dump_obj(struct yaffs_obj *obj);
-void yaffs_GutsTest(yaffs_Device * dev);
+void yaffs_guts_test(struct yaffs_dev *dev);
-/* A few useful functions */
-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn);
-int yaffs_CheckFF(__u8 * buffer, int nBytes);
-void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
+/* A few useful functions to be used within the core files*/
+void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash,
+ int lyn);
+int yaffs_check_ff(u8 *buffer, int n_bytes);
+void yaffs_handle_chunk_error(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi);
+
+u8 *yaffs_get_temp_buffer(struct yaffs_dev *dev);
+void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer);
+
+struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev,
+ int number,
+ enum yaffs_obj_type type);
+int yaffs_put_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ int nand_chunk, int in_scan);
+void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR *name);
+void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj,
+ const struct yaffs_obj_hdr *oh);
+void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj);
+YCHAR *yaffs_clone_str(const YCHAR *str);
+void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list);
+void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no);
+int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name,
+ int force, int is_shrink, int shadows,
+ struct yaffs_xattr_mod *xop);
+void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id,
+ int backward_scanning);
+int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks);
+struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev);
+struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id,
+ struct yaffs_tnode *passed_tn);
+
+int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset,
+ int n_bytes, int write_trhrough);
+void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size);
+void yaffs_skip_rest_of_block(struct yaffs_dev *dev);
+
+int yaffs_count_free_chunks(struct yaffs_dev *dev);
+
+struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id);
+
+u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn,
+ unsigned pos);
+
+int yaffs_is_non_empty_dir(struct yaffs_obj *obj);
+
+void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr,
+ int *chunk_out, u32 *offset_out);
+/*
+ * Marshalling functions to get loff_t file sizes into aand out of
+ * object headers.
+ */
+void yaffs_oh_size_load(struct yaffs_obj_hdr *oh, loff_t fsize);
+loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh);
+loff_t yaffs_max_file_size(struct yaffs_dev *dev);
+
#endif