diff options
| -rw-r--r-- | target/linux/generic-2.6/patches/510-Yaffs.patch | 3896 |
1 files changed, 2903 insertions, 993 deletions
diff --git a/target/linux/generic-2.6/patches/510-Yaffs.patch b/target/linux/generic-2.6/patches/510-Yaffs.patch index 58042f7a2..fb0299e6e 100644 --- a/target/linux/generic-2.6/patches/510-Yaffs.patch +++ b/target/linux/generic-2.6/patches/510-Yaffs.patch @@ -1,32 +1,205 @@ -diff -urN linux-2.6.21.1.old/fs/Kconfig linux-2.6.21.1.dev/fs/Kconfig ---- linux-2.6.21.1.old/fs/Kconfig 2007-05-26 21:04:21.321701752 +0200 -+++ linux-2.6.21.1.dev/fs/Kconfig 2007-05-26 21:13:40.641672192 +0200 -@@ -1192,6 +1192,8 @@ - To compile the EFS file system support as a module, choose M here: the - module will be called efs. - -+source "fs/yaffs2/Kconfig" +diff -urN linux-2.6.21.1/fs/yaffs2/Kconfig linux-2.6.21.1.new/fs/yaffs2/Kconfig +--- linux-2.6.21.1/fs/yaffs2/Kconfig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/Kconfig 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,175 @@ ++# ++# YAFFS file system configurations ++# + - config JFFS2_FS - tristate "Journalling Flash File System v2 (JFFS2) support" - select CRC32 -diff -urN linux-2.6.21.1.old/fs/Makefile linux-2.6.21.1.dev/fs/Makefile ---- linux-2.6.21.1.old/fs/Makefile 2007-05-26 21:04:21.321701752 +0200 -+++ linux-2.6.21.1.dev/fs/Makefile 2007-05-26 21:13:40.641672192 +0200 -@@ -116,3 +116,4 @@ - obj-$(CONFIG_DEBUG_FS) += debugfs/ - obj-$(CONFIG_OCFS2_FS) += ocfs2/ - obj-$(CONFIG_GFS2_FS) += gfs2/ -+obj-$(CONFIG_YAFFS_FS) += yaffs2/ -diff -urN linux-2.6.21.1.old/fs/yaffs2/devextras.h linux-2.6.21.1.dev/fs/yaffs2/devextras.h ---- linux-2.6.21.1.old/fs/yaffs2/devextras.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/devextras.h 2007-05-26 21:13:40.683665808 +0200 -@@ -0,0 +1,265 @@ ++config YAFFS_FS ++ tristate "YAFFS2 file system support" ++ default n ++ depends on MTD ++ select YAFFS_YAFFS1 ++ select YAFFS_YAFFS2 ++ help ++ YAFFS2, or Yet Another Flash Filing System, is a filing system ++ optimised for NAND Flash chips. ++ ++ To compile the YAFFS2 file system support as a module, choose M ++ here: the module will be called yaffs2. ++ ++ If unsure, say N. ++ ++ Further information on YAFFS2 is available at ++ <http://www.aleph1.co.uk/yaffs/>. ++ ++config YAFFS_YAFFS1 ++ bool "512 byte / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS1 support -- yaffs for 512 byte / page devices ++ ++ Not needed for 2K-page devices. ++ ++ If unsure, say Y. ++ ++config YAFFS_9BYTE_TAGS ++ bool "Use older-style on-NAND data format with pageStatus byte" ++ depends on YAFFS_YAFFS1 ++ default n ++ help ++ ++ Older-style on-NAND data format has a "pageStatus" byte to record ++ chunk/page state. This byte is zero when the page is discarded. ++ Choose this option if you have existing on-NAND data using this ++ format that you need to continue to support. New data written ++ also uses the older-style format. Note: Use of this option ++ generally requires that MTD's oob layout be adjusted to use the ++ older-style format. See notes on tags formats and MTD versions. ++ ++ If unsure, say N. ++ ++config YAFFS_DOES_ECC ++ bool "Lets Yaffs do its own ECC" ++ depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This enables Yaffs to use its own ECC functions instead of using ++ the ones from the generic MTD-NAND driver. ++ ++ If unsure, say N. ++ ++config YAFFS_ECC_WRONG_ORDER ++ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c" ++ depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This makes yaffs_ecc.c use the same ecc byte order as Steven ++ Hill's nand_ecc.c. If not set, then you get the same ecc byte ++ order as SmartMedia. ++ ++ If unsure, say N. ++ ++config YAFFS_YAFFS2 ++ bool "2048 byte (or larger) / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices ++ ++ If unsure, say Y. ++ ++config YAFFS_AUTO_YAFFS2 ++ bool "Autoselect yaffs2 format" ++ depends on YAFFS_YAFFS2 ++ default y ++ help ++ Without this, you need to explicitely use yaffs2 as the file ++ system type. With this, you can say "yaffs" and yaffs or yaffs2 ++ will be used depending on the device page size (yaffs on ++ 512-byte page devices, yaffs2 on 2K page devices). ++ ++ If unsure, say Y. ++ ++config YAFFS_DISABLE_LAZY_LOAD ++ bool "Disable lazy loading" ++ depends on YAFFS_YAFFS2 ++ default n ++ help ++ "Lazy loading" defers loading file details until they are ++ required. This saves mount time, but makes the first look-up ++ a bit longer. ++ ++ Lazy loading will only happen if enabled by this option being 'n' ++ and if the appropriate tags are available, else yaffs2 will ++ automatically fall back to immediate loading and do the right ++ thing. ++ ++ Lazy laoding will be required by checkpointing. ++ ++ Setting this to 'y' will disable lazy loading. ++ ++ If unsure, say N. ++ ++config YAFFS_CHECKPOINT_RESERVED_BLOCKS ++ int "Reserved blocks for checkpointing" ++ depends on YAFFS_YAFFS2 ++ default 10 ++ help ++ Give the number of Blocks to reserve for checkpointing. ++ Checkpointing saves the state at unmount so that mounting is ++ much faster as a scan of all the flash to regenerate this state ++ is not needed. These Blocks are reserved per partition, so if ++ you have very small partitions the default (10) may be a mess ++ for you. You can set this value to 0, but that does not mean ++ checkpointing is disabled at all. There only won't be any ++ specially reserved blocks for checkpointing, so if there is ++ enough free space on the filesystem, it will be used for ++ checkpointing. ++ ++ If unsure, leave at default (10), but don't wonder if there are ++ always 2MB used on your large page device partition (10 x 2k ++ pagesize). When using small partitions or when being very small ++ on space, you probably want to set this to zero. ++ ++config YAFFS_DISABLE_WIDE_TNODES ++ bool "Turn off wide tnodes" ++ depends on YAFFS_FS ++ default n ++ help ++ Wide tnodes are only used for NAND arrays >=32MB for 512-byte ++ page devices and >=128MB for 2k page devices. They use slightly ++ more RAM but are faster since they eliminate chunk group ++ searching. ++ ++ Setting this to 'y' will force tnode width to 16 bits and save ++ memory but make large arrays slower. ++ ++ If unsure, say N. ++ ++config YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ bool "Force chunk erase check" ++ depends on YAFFS_FS ++ default n ++ help ++ Normally YAFFS only checks chunks before writing until an erased ++ chunk is found. This helps to detect any partially written ++ chunks that might have happened due to power loss. ++ ++ Enabling this forces on the test that chunks are erased in flash ++ before writing to them. This takes more time but is potentially ++ a bit more secure. ++ ++ Suggest setting Y during development and ironing out driver ++ issues etc. Suggest setting to N if you want faster writing. ++ ++ If unsure, say Y. ++ ++config YAFFS_SHORT_NAMES_IN_RAM ++ bool "Cache short names in RAM" ++ depends on YAFFS_FS ++ default y ++ help ++ If this config is set, then short names are stored with the ++ yaffs_Object. This costs an extra 16 bytes of RAM per object, ++ but makes look-ups faster. ++ ++ If unsure, say Y. +diff -urN linux-2.6.21.1/fs/yaffs2/Makefile linux-2.6.21.1.new/fs/yaffs2/Makefile +--- linux-2.6.21.1/fs/yaffs2/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/Makefile 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,11 @@ ++# ++# Makefile for the linux YAFFS filesystem routines. ++# ++ ++obj-$(CONFIG_YAFFS_FS) += yaffs.o ++ ++yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o ++yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o ++yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o ++yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o ++yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o +diff -urN linux-2.6.21.1/fs/yaffs2/devextras.h linux-2.6.21.1.new/fs/yaffs2/devextras.h +--- linux-2.6.21.1/fs/yaffs2/devextras.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/devextras.h 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,264 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * devextras.h ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -36,13 +209,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/devextras.h linux-2.6.21.1.dev/fs/yaffs2/ + * 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 used during development. + * Most of these are from kernel includes placed here so we can use them in + * applications. + * -+ * $Id: devextras.h,v 1.2 2005/08/11 02:37:49 marty Exp $ -+ * + */ + +#ifndef __EXTRAS_H__ @@ -287,163 +460,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/devextras.h linux-2.6.21.1.dev/fs/yaffs2/ +#endif + +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/Kconfig linux-2.6.21.1.dev/fs/yaffs2/Kconfig ---- linux-2.6.21.1.old/fs/yaffs2/Kconfig 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/Kconfig 2007-05-26 21:13:40.683665808 +0200 -@@ -0,0 +1,135 @@ -+# -+# YAFFS file system configurations -+# -+ -+config YAFFS_FS -+ tristate "YAFFS2 file system support" -+ default n -+ depends on MTD -+ select YAFFS_YAFFS1 -+ select YAFFS_YAFFS2 -+ help -+ YAFFS2, or Yet Another Flash Filing System, is a filing system -+ optimised for NAND Flash chips. -+ -+ To compile the YAFFS2 file system support as a module, choose M here: -+ the module will be called yaffs2. -+ -+ If unsure, say N. -+ -+ Further information on YAFFS2 is available at -+ <http://www.aleph1.co.uk/yaffs/>. -+ -+config YAFFS_YAFFS1 -+ bool "512 byte / page devices" -+ depends on YAFFS_FS -+ default y -+ help -+ Enable YAFFS1 support -- yaffs for 512 byte / page devices -+ -+ If unsure, say Y. -+ -+config YAFFS_DOES_ECC -+ bool "Lets Yaffs do its own ECC" -+ depends on YAFFS_FS && YAFFS_YAFFS1 -+ default n -+ help -+ This enables Yaffs to use its own ECC functions instead of using -+ the ones from the generic MTD-NAND driver. -+ -+ If unsure, say N. -+ -+config YAFFS_ECC_WRONG_ORDER -+ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c" -+ depends on YAFFS_FS && YAFFS_DOES_ECC -+ default n -+ help -+ This makes yaffs_ecc.c use the same ecc byte order as -+ Steven Hill's nand_ecc.c. If not set, then you get the -+ same ecc byte order as SmartMedia. -+ -+ If unsure, say N. -+ -+config YAFFS_YAFFS2 -+ bool "2048 byte (or larger) / page devices" -+ depends on YAFFS_FS -+ default y -+ help -+ Enable YAFFS2 support -- yaffs for >= 2048 byte / page larger devices -+ -+ If unsure, say Y. -+ -+config YAFFS_AUTO_YAFFS2 -+ bool "Autoselect yaffs2 format" -+ depends on YAFFS_YAFFS2 -+ default y -+ help -+ Without this, you need to explicitely use yaffs2 as the file -+ system type. With this, you can say "yaffs" and yaffs or yaffs2 -+ will be used depending on the device page size. -+ -+ If unsure, say Y. -+ -+config YAFFS_DISABLE_LAZY_LOAD -+ bool "Disable lazy loading" -+ depends on YAFFS_YAFFS2 -+ default n -+ help -+ "Lazy loading" defers loading file details until they are -+ required. This saves mount time, but makes the first look-up -+ a bit longer. -+ -+ Lazy loading will only happen if enabled by this option being 'n' -+ and if the appropriate tags are available, else yaffs2 will -+ automatically fall back to immediate loading and do the right -+ thing. -+ -+ Lazy laoding will be required by checkpointing. -+ -+ Setting this to 'y' will disable lazy loading. -+ -+ If unsure, say N. -+ -+config YAFFS_DISABLE_WIDE_TNODES -+ bool "Turn off wide tnodes" -+ depends on YAFFS_FS -+ default n -+ help -+ Wide tnodes are only used for large NAND arrays (>=32MB for -+ 512-byte page devices and >=128MB for 2k page devices). They use -+ slightly more RAM but are faster since they eliminate chunk group -+ searching. -+ -+ Setting this to 'y' will force tnode width to 16 bits and make -+ large arrays slower. -+ -+ If unsure, say N. -+ -+config YAFFS_ALWAYS_CHECK_CHUNK_ERASED -+ bool "Force chunk erase check" -+ depends on YAFFS_FS -+ default n -+ help -+ Normally YAFFS only checks chunks before writing until an erased -+ chunk is found. This helps to detect any partially written chunks -+ that might have happened due to power loss. -+ -+ Enabling this forces on the test that chunks are erased in flash -+ before writing to them. This takes more time but is potentially a -+ bit more secure. -+ -+ Suggest setting Y during development and ironing out driver issues -+ etc. Suggest setting to N if you want faster writing. -+ -+ If unsure, say Y. -+ -+config YAFFS_SHORT_NAMES_IN_RAM -+ bool "Cache short names in RAM" -+ depends on YAFFS_FS -+ default y -+ help -+ If this config is set, then short names are stored with the -+ yaffs_Object. This costs an extra 16 bytes of RAM per object, -+ but makes look-ups faster. -+ -+ If unsure, say Y. -diff -urN linux-2.6.21.1.old/fs/yaffs2/Makefile linux-2.6.21.1.dev/fs/yaffs2/Makefile ---- linux-2.6.21.1.old/fs/yaffs2/Makefile 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/Makefile 2007-05-26 21:13:40.683665808 +0200 -@@ -0,0 +1,10 @@ -+# -+# Makefile for the linux YAFFS filesystem routines. -+# -+ -+obj-$(CONFIG_YAFFS_FS) += yaffs.o +diff -urN linux-2.6.21.1/fs/yaffs2/moduleconfig.h linux-2.6.21.1.new/fs/yaffs2/moduleconfig.h +--- linux-2.6.21.1/fs/yaffs2/moduleconfig.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/moduleconfig.h 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,65 @@ ++/* ++ * 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 Martin Fouts <Martin.Fouts@palmsource.com> ++ * ++ * 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. ++ */ + -+yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o -+yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o -+yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o -+yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o -diff -urN linux-2.6.21.1.old/fs/yaffs2/moduleconfig.h linux-2.6.21.1.dev/fs/yaffs2/moduleconfig.h ---- linux-2.6.21.1.old/fs/yaffs2/moduleconfig.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/moduleconfig.h 2007-05-26 21:13:40.684665656 +0200 -@@ -0,0 +1,32 @@ +#ifndef __YAFFS_CONFIG_H__ +#define __YAFFS_CONFIG_H__ + @@ -473,16 +508,35 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/moduleconfig.h linux-2.6.21.1.dev/fs/yaff +/* Meaning: Cache short names, taking more RAM, but faster look-ups */ +#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM + ++/* Default: 10 */ ++/* Meaning: set the count of blocks to reserve for checkpointing */ ++#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 ++ ++/* ++Older-style on-NAND data format has a "pageStatus" byte to record ++chunk/page state. This byte is zeroed when the page is discarded. ++Choose this option if you have existing on-NAND data in this format ++that you need to continue to support. New data written also uses the ++older-style format. ++Note: Use of this option generally requires that MTD's oob layout be ++adjusted to use the older-style format. See notes on tags formats and ++MTD versions. ++*/ ++/* Default: Not selected */ ++/* Meaning: Use older-style on-NAND data format with pageStatus byte */ ++#define CONFIG_YAFFS_9BYTE_TAGS ++ +#endif /* YAFFS_OUT_OF_TREE */ + +#endif /* __YAFFS_CONFIG_H__ */ -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_checkptrw.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_checkptrw.c 2007-05-26 21:13:40.684665656 +0200 -@@ -0,0 +1,384 @@ -+/* YAFFS: Yet another FFS. A NAND-flash specific file system. +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,404 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -490,11 +544,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. -+ * + */ + +const char *yaffs_checkptrw_c_version = -+ "$Id: yaffs_checkptrw.c,v 1.11 2006/11/11 23:27:04 charles Exp $"; ++ "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $"; + + +#include "yaffs_checkptrw.h" @@ -514,7 +567,6 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y +} + + -+ +static int yaffs_CheckpointErase(yaffs_Device *dev) +{ + @@ -635,6 +687,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + dev->checkpointOpenForWrite = forWriting; + + dev->checkpointByteCount = 0; ++ dev->checkpointSum = 0; ++ dev->checkpointXor = 0; + dev->checkpointCurrentBlock = -1; + dev->checkpointCurrentChunk = -1; + dev->checkpointNextBlock = dev->internalStartBlock; @@ -662,6 +716,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + return 1; +} + ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) ++{ ++ __u32 compositeSum; ++ compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); ++ *sum = compositeSum; ++ return 1; ++} ++ +static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) +{ + @@ -725,12 +787,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + + if(!dev->checkpointBuffer) + return 0; ++ ++ if(!dev->checkpointOpenForWrite) ++ return -1; + + while(i < nBytes && ok) { + + + -+ dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ; ++ dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; ++ + dev->checkpointByteOffset++; + i++; + dataBytes++; @@ -761,6 +829,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + if(!dev->checkpointBuffer) + return 0; + ++ if(dev->checkpointOpenForWrite) ++ return -1; ++ + while(i < nBytes && ok) { + + @@ -802,6 +873,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + + if(ok){ + *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; + dev->checkpointByteOffset++; + i++; + dataBytes++; @@ -864,10 +937,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.dev/fs/y + + + -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_checkptrw.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_checkptrw.h 2007-05-26 21:13:40.684665656 +0200 -@@ -0,0 +1,18 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.h linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.h 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,35 @@ ++/* ++ * 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. ++ */ ++ +#ifndef __YAFFS_CHECKPTRW_H__ +#define __YAFFS_CHECKPTRW_H__ + @@ -879,6 +967,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.h linux-2.6.21.1.dev/fs/y + +int yaffs_CheckpointRead(yaffs_Device *dev,void *data, int nBytes); + ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); ++ +int yaffs_CheckpointClose(yaffs_Device *dev); + +int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); @@ -886,34 +976,32 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_checkptrw.h linux-2.6.21.1.dev/fs/y + +#endif + -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_ecc.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_ecc.c 2007-05-26 21:13:40.684665656 +0200 -@@ -0,0 +1,333 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_ecc.c linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_ecc.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,331 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * -+ * yaffs_ecc.c: ECC generation/correction algorithms. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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. ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. + */ + -+ /* -+ * This code implements the ECC algorithm used in SmartMedia. -+ * -+ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. -+ * The two unused bit are set to 1. -+ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC -+ * blocks are used on a 512-byte NAND page. -+ * -+ */ ++/* ++ * This code implements the ECC algorithm used in SmartMedia. ++ * ++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. ++ * The two unused bit are set to 1. ++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC ++ * blocks are used on a 512-byte NAND page. ++ * ++ */ + +/* Table generated by gen-ecc.c + * Using a table means we do not have to calculate p1..p4 and p1'..p4' @@ -923,7 +1011,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.c linux-2.6.21.1.dev/fs/yaffs2/ + */ + +const char *yaffs_ecc_c_version = -+ "$Id: yaffs_ecc.c,v 1.7 2006/09/14 22:02:46 charles Exp $"; ++ "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $"; + +#include "yportenv.h" + @@ -1223,23 +1311,23 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.c linux-2.6.21.1.dev/fs/yaffs2/ + +} + -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_ecc.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_ecc.h 2007-05-26 21:13:40.685665504 +0200 +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_ecc.h linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_ecc.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.h 2007-05-30 13:17:16.000000000 +0200 @@ -0,0 +1,44 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * -+ * yaffs_ecc.c: ECC generation/correction algorithms. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as ++ * 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. + */ + + /* @@ -1271,22 +1359,31 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_ecc.h linux-2.6.21.1.dev/fs/yaffs2/ + yaffs_ECCOther * read_ecc, + const yaffs_ECCOther * test_ecc); +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_fs.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_fs.c 2007-05-26 21:13:40.687665200 +0200 -@@ -0,0 +1,2136 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.new/fs/yaffs2/yaffs_fs.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_fs.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_fs.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,2278 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_fs.c ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> ++ * Acknowledgements: ++ * Luc van OostenRyck for numerous patches. ++ * Nick Bane for numerous patches. ++ * Nick Bane for 2.5/2.6 integration. ++ * Andras Toth for mknod rdev issue. ++ * Michael Fischer for finding the problem with inode inconsistency. ++ * Some code bodily lifted from JFFS + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. ++ */ ++ ++/* + * + * This is the file system front-end to YAFFS that hooks it up to + * the VFS. @@ -1297,24 +1394,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this + * superblock + * >> inode->u.generic_ip points to the associated yaffs_Object. -+ * -+ * Acknowledgements: -+ * * Luc van OostenRyck for numerous patches. -+ * * Nick Bane for numerous patches. -+ * * Nick Bane for 2.5/2.6 integration. -+ * * Andras Toth for mknod rdev issue. -+ * * Michael Fischer for finding the problem with inode inconsistency. -+ * * Some code bodily lifted from JFFS2. + */ + +const char *yaffs_fs_c_version = -+ "$Id: yaffs_fs.c,v 1.54 2006/10/24 18:09:15 charles Exp $"; ++ "$Id: yaffs_fs.c,v 1.60 2007-05-15 20:07:40 charles Exp $"; +extern const char *yaffs_guts_c_version; + -+#include <linux/autoconf.h> ++#include <linux/version.h> ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) ++#include <linux/config.h> ++#endif +#include <linux/kernel.h> +#include <linux/module.h> -+#include <linux/version.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/list.h> @@ -1350,26 +1441,45 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + +#endif + ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++#define WRITE_SIZE_STR "writesize" ++#define WRITE_SIZE(mtd) (mtd)->writesize ++#else ++#define WRITE_SIZE_STR "oobblock" ++#define WRITE_SIZE(mtd) (mtd)->oobblock ++#endif ++ +#include <asm/uaccess.h> + +#include "yportenv.h" +#include "yaffs_guts.h" + -+unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS | -+ YAFFS_TRACE_BAD_BLOCKS -+ /* | 0xFFFFFFFF */; -+ +#include <linux/mtd/mtd.h> +#include "yaffs_mtdif.h" ++#include "yaffs_mtdif1.h" +#include "yaffs_mtdif2.h" + ++unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; ++unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; ++ ++/* Module Parameters */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++module_param(yaffs_traceMask,uint,0644); ++module_param(yaffs_wr_attempts,uint,0644); ++#else ++MODULE_PARM(yaffs_traceMask,"i"); ++MODULE_PARM(yaffs_wr_attempts,"i"); ++#endif ++ +/*#define T(x) printk x */ + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) -+#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->i_private)) ++#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private +#else -+#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip)) ++#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip +#endif ++ ++#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) +#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) @@ -1472,8 +1582,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) + .read = do_sync_read, + .write = do_sync_write, -+ .aio_read = generic_file_aio_read, -+ .aio_write = generic_file_aio_write, ++ .aio_read = generic_file_aio_read, ++ .aio_write = generic_file_aio_write, +#else + .read = generic_file_read, + .write = generic_file_write, @@ -1695,11 +1805,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + * the yaffs_Object. + */ + obj->myInode = NULL; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) -+ inode->i_private = NULL; -+#else -+ inode->u.generic_ip = NULL; -+#endif ++ yaffs_InodeToObjectLV(inode) = NULL; + + /* If the object freeing was deferred, then the real + * free happens now. @@ -2049,11 +2155,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + break; + } + -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) -+ inode->i_private = obj; -+#else -+ inode->u.generic_ip = obj; -+#endif ++ yaffs_InodeToObjectLV(inode) = obj; ++ + obj->myInode = inode; + + } else { @@ -2619,7 +2722,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +} + + -+ ++/** +static int yaffs_do_sync_fs(struct super_block *sb) +{ + @@ -2638,7 +2741,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + } + return 0; +} -+ ++**/ + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +static void yaffs_write_super(struct super_block *sb) @@ -2692,6 +2795,35 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + +static LIST_HEAD(yaffs_dev_list); + ++static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) ++{ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++ ++ if( *flags & MS_RDONLY ) { ++ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name )); ++ ++ yaffs_GrossLock(dev); ++ ++ yaffs_FlushEntireDeviceCache(dev); ++ ++ yaffs_CheckpointSave(dev); ++ ++ if (mtd->sync) ++ mtd->sync(mtd); ++ ++ yaffs_GrossUnlock(dev); ++ } ++ else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name )); ++ } ++ ++ return 0; ++} ++ +static void yaffs_put_super(struct super_block *sb) +{ + yaffs_Device *dev = yaffs_SuperToDevice(sb); @@ -2701,12 +2833,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + yaffs_GrossLock(dev); + + yaffs_FlushEntireDeviceCache(dev); -+ ++ ++ yaffs_CheckpointSave(dev); ++ + if (dev->putSuperFunc) { + dev->putSuperFunc(sb); + } -+ -+ yaffs_CheckpointSave(dev); ++ + yaffs_Deinitialise(dev); + + yaffs_GrossUnlock(dev); @@ -2745,6 +2878,55 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +// sb->s_dirt = 1; +} + ++typedef struct { ++ int inband_tags; ++ int skip_checkpoint_read; ++ int skip_checkpoint_write; ++ int no_cache; ++} yaffs_options; ++ ++#define MAX_OPT_LEN 20 ++static int yaffs_parse_options(yaffs_options *options, const char *options_str) ++{ ++ char cur_opt[MAX_OPT_LEN+1]; ++ int p; ++ int error = 0; ++ ++ /* Parse through the options which is a comma seperated list */ ++ ++ while(options_str && *options_str && !error){ ++ memset(cur_opt,0,MAX_OPT_LEN+1); ++ p = 0; ++ ++ while(*options_str && *options_str != ','){ ++ if(p < MAX_OPT_LEN){ ++ cur_opt[p] = *options_str; ++ p++; ++ } ++ options_str++; ++ } ++ ++ if(!strcmp(cur_opt,"inband-tags")) ++ options->inband_tags = 1; ++ else if(!strcmp(cur_opt,"no-cache")) ++ options->no_cache = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint-read")) ++ options->skip_checkpoint_read = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint-write")) ++ options->skip_checkpoint_write = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint")){ ++ options->skip_checkpoint_read = 1; ++ options->skip_checkpoint_write = 1; ++ } else { ++ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt); ++ error = 1; ++ } ++ ++ } ++ ++ return error; ++} ++ +static struct super_block *yaffs_internal_read_super(int yaffsVersion, + struct super_block *sb, + void *data, int silent) @@ -2756,6 +2938,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + char devname_buf[BDEVNAME_SIZE + 1]; + struct mtd_info *mtd; + int err; ++ char *data_str = (char *)data; ++ ++ yaffs_options options; + + sb->s_magic = YAFFS_MAGIC; + sb->s_op = &yaffs_super_ops; @@ -2770,6 +2955,19 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", + sb->s_dev, + yaffs_devname(sb, devname_buf)); ++ ++ if(!data_str) ++ data_str = ""; ++ ++ printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str); ++ ++ memset(&options,0,sizeof(options)); ++ ++ if(yaffs_parse_options(&options,data_str)){ ++ /* Option parsing failed */ ++ return NULL; ++ } ++ + + sb->s_blocksize = PAGE_CACHE_SIZE; + sb->s_blocksize_bits = PAGE_CACHE_SHIFT; @@ -2814,11 +3012,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob)); + T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad)); + T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad)); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ T(YAFFS_TRACE_OS, (" writesize %d\n", mtd->writesize)); -+#else -+ T(YAFFS_TRACE_OS, (" oobblock %d\n", mtd->oobblock)); -+#endif ++ T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); + T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); + T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); + T(YAFFS_TRACE_OS, (" size %d\n", mtd->size)); @@ -2895,11 +3089,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + return NULL; + } + -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ if (mtd->writesize < YAFFS_BYTES_PER_CHUNK || -+#else -+ if (mtd->oobblock < YAFFS_BYTES_PER_CHUNK || -+#endif ++ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || + mtd->oobsize != YAFFS_BYTES_PER_SPARE) { + T(YAFFS_TRACE_ALWAYS, + ("yaffs: MTD device does not support have the " @@ -2938,7 +3128,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; + dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK; + dev->nReservedBlocks = 5; -+ dev->nShortOpCaches = 10; /* Enable short op caching */ ++ dev->nShortOpCaches = (options.no_cache) ? 0 : 10; + + /* ... and the functions. */ + if (yaffsVersion == 2) { @@ -2959,12 +3149,22 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +#endif + nBlocks = mtd->size / mtd->erasesize; + -+ dev->nCheckpointReservedBlocks = 0; ++ dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS; + dev->startBlock = 0; + dev->endBlock = nBlocks - 1; + } else { ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ /* use the MTD interface in yaffs_mtdif1.c */ ++ dev->writeChunkWithTagsToNAND = ++ nandmtd1_WriteChunkWithTagsToNAND; ++ dev->readChunkWithTagsFromNAND = ++ nandmtd1_ReadChunkWithTagsFromNAND; ++ dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; ++ dev->queryNANDBlock = nandmtd1_QueryNANDBlock; ++#else + dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; + dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; ++#endif + dev->isYaffs2 = 0; + } + /* ... and common functions */ @@ -2985,6 +3185,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + dev->wideTnodesDisabled = 1; +#endif + ++ dev->skipCheckpointRead = options.skip_checkpoint_read; ++ dev->skipCheckpointWrite = options.skip_checkpoint_write; ++ + /* we assume this is protected by lock_kernel() in mount/umount */ + list_add_tail(&dev->devList, &yaffs_dev_list); + @@ -3129,9 +3332,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +{ + buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); + buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); ++ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); + buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); + buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); + buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); ++ buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); ++ buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks); ++ buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); + buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); + buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); + buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated); @@ -3147,6 +3354,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + sprintf(buf, "passiveGCs......... %d\n", + dev->passiveGarbageCollections); + buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); ++ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); + buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); + buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); + buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); @@ -3209,6 +3417,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +/** + * Set the verbosity of the warnings and error messages. + * ++ * Note that the names can only be a..z or _ with the current code. + */ + +static struct { @@ -3220,6 +3429,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, + {"buffers", YAFFS_TRACE_BUFFERS}, + {"bug", YAFFS_TRACE_BUG}, ++ {"checkpt", YAFFS_TRACE_CHECKPOINT}, + {"deletion", YAFFS_TRACE_DELETION}, + {"erase", YAFFS_TRACE_ERASE}, + {"error", YAFFS_TRACE_ERROR}, @@ -3231,20 +3441,30 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, + {"scan", YAFFS_TRACE_SCAN}, + {"tracing", YAFFS_TRACE_TRACING}, ++ ++ {"verify", YAFFS_TRACE_VERIFY}, ++ {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, ++ {"verify_full", YAFFS_TRACE_VERIFY_FULL}, ++ {"verify_all", YAFFS_TRACE_VERIFY_ALL}, ++ + {"write", YAFFS_TRACE_WRITE}, + {"all", 0xffffffff}, + {"none", 0}, + {NULL, 0}, +}; + ++#define MAX_MASK_NAME_LENGTH 40 +static int yaffs_proc_write(struct file *file, const char *buf, + unsigned long count, void *data) +{ + unsigned rg = 0, mask_bitfield; -+ char *end, *mask_name; ++ char *end; ++ char *mask_name; ++ char *x; ++ char substring[MAX_MASK_NAME_LENGTH+1]; + int i; + int done = 0; -+ int add, len; ++ int add, len = 0; + int pos = 0; + + rg = yaffs_traceMask; @@ -3268,16 +3488,23 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + break; + } + mask_name = NULL; ++ + mask_bitfield = simple_strtoul(buf + pos, &end, 0); + if (end > buf + pos) { + mask_name = "numeral"; + len = end - (buf + pos); + done = 0; + } else { -+ ++ for(x = buf + pos, i = 0; ++ (*x == '_' || (*x >='a' && *x <= 'z')) && ++ i <MAX_MASK_NAME_LENGTH; x++, i++, pos++) ++ substring[i] = *x; ++ substring[i] = '\0'; ++ + for (i = 0; mask_flags[i].mask_name != NULL; i++) { -+ len = strlen(mask_flags[i].mask_name); -+ if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) { ++ //len = strlen(mask_flags[i].mask_name); ++ //if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) { ++ if(strcmp(substring,mask_flags[i].mask_name) == 0){ + mask_name = mask_flags[i].mask_name; + mask_bitfield = mask_flags[i].mask_bitfield; + done = 0; @@ -3287,7 +3514,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + } + + if (mask_name != NULL) { -+ pos += len; ++ // pos += len; + done = 0; + switch(add) { + case '-': @@ -3306,7 +3533,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y + } + } + -+ yaffs_traceMask = rg; ++ yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; ++ ++ printk("new trace = 0x%08X\n",yaffs_traceMask); ++ + if (rg & YAFFS_TRACE_ALWAYS) { + for (i = 0; mask_flags[i].mask_name != NULL; i++) { + char flag; @@ -3411,14 +3641,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.dev/fs/yaffs2/y +MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); +MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); +MODULE_LICENSE("GPL"); -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_guts.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_guts.c 2007-05-26 21:13:40.730658664 +0200 -@@ -0,0 +1,6675 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_guts.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,7469 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -3426,11 +3656,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. -+ * + */ + +const char *yaffs_guts_c_version = -+ "$Id: yaffs_guts.c,v 1.45 2006/11/14 03:07:17 charles Exp $"; ++ "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $"; + +#include "yportenv.h" + @@ -3439,7 +3668,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +#include "yaffs_tagsvalidity.h" + +#include "yaffs_tagscompat.h" -+#ifndef CONFIG_YAFFS_OWN_SORT ++#ifndef CONFIG_YAFFS_USE_OWN_SORT +#include "yaffs_qsort.h" +#endif +#include "yaffs_nand.h" @@ -3515,6 +3744,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +static void yaffs_VerifyFreeChunks(yaffs_Device * dev); + ++static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); ++ +#ifdef YAFFS_PARANOID +static int yaffs_CheckFileSanity(yaffs_Object * in); +#else @@ -3526,6 +3757,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); + ++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * tags); ++ ++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos); ++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev, ++ yaffs_FileStructure * fStruct, ++ __u32 chunkId); + + +/* Function to calculate chunk and offset */ @@ -3599,6 +3837,23 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + * Temporary buffer manipulations. + */ + ++static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) ++{ ++ int i; ++ __u8 *buf = (__u8 *)1; ++ ++ memset(dev->tempBuffer,0,sizeof(dev->tempBuffer)); ++ ++ for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { ++ dev->tempBuffer[i].line = 0; /* not in use */ ++ dev->tempBuffer[i].buffer = buf = ++ YMALLOC_DMA(dev->nDataBytesPerChunk); ++ } ++ ++ return buf ? YAFFS_OK : YAFFS_FAIL; ++ ++} ++ +static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo) +{ + int i, j; @@ -3682,6 +3937,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + return 0; +} + ++ ++ +/* + * Chunk bitmap manipulations + */ @@ -3698,6 +3955,16 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); +} + ++static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) ++{ ++ if(blk < dev->internalStartBlock || blk > dev->internalEndBlock || ++ chunk < 0 || chunk >= dev->nChunksPerBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),blk,chunk)); ++ YBUG(); ++ } ++} ++ +static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); @@ -3709,12 +3976,16 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + ++ yaffs_VerifyChunkBitId(dev,blk,chunk); ++ + blkBits[chunk / 8] &= ~(1 << (chunk & 7)); +} + +static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ ++ yaffs_VerifyChunkBitId(dev,blk,chunk); + + blkBits[chunk / 8] |= (1 << (chunk & 7)); +} @@ -3722,6 +3993,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ yaffs_VerifyChunkBitId(dev,blk,chunk); ++ + return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; +} + @@ -3737,6 +4010,491 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + return 0; +} + ++static int yaffs_CountChunkBits(yaffs_Device * dev, int blk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ int i; ++ int n = 0; ++ for (i = 0; i < dev->chunkBitmapStride; i++) { ++ __u8 x = *blkBits; ++ while(x){ ++ if(x & 1) ++ n++; ++ x >>=1; ++ } ++ ++ blkBits++; ++ } ++ return n; ++} ++ ++/* ++ * Verification code ++ */ ++ ++static int yaffs_SkipVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); ++} ++ ++static int yaffs_SkipFullVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); ++} ++ ++static int yaffs_SkipNANDVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); ++} ++ ++static const char * blockStateName[] = { ++"Unknown", ++"Needs scanning", ++"Scanning", ++"Empty", ++"Allocating", ++"Full", ++"Dirty", ++"Checkpoint", ++"Collecting", ++"Dead" ++}; ++ ++static void yaffs_VerifyBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n) ++{ ++ int actuallyUsed; ++ int inUse; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Report illegal runtime states */ ++ if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState)); ++ ++ switch(bi->blockState){ ++ case YAFFS_BLOCK_STATE_UNKNOWN: ++ case YAFFS_BLOCK_STATE_SCANNING: ++ case YAFFS_BLOCK_STATE_NEEDS_SCANNING: ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR), ++ n,blockStateName[bi->blockState])); ++ } ++ ++ /* Check pages in use and soft deletions are legal */ ++ ++ actuallyUsed = bi->pagesInUse - bi->softDeletions; ++ ++ if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || ++ bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || ++ actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), ++ n,bi->pagesInUse,bi->softDeletions)); ++ ++ ++ /* Check chunk bitmap legal */ ++ inUse = yaffs_CountChunkBits(dev,n); ++ if(inUse != bi->pagesInUse) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), ++ n,bi->pagesInUse,inUse)); ++ ++ /* Check that the sequence number is valid. ++ * Ten million is legal, but is very unlikely ++ */ ++ if(dev->isYaffs2 && ++ (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && ++ (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 )) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR), ++ n,bi->sequenceNumber)); ++ ++} ++ ++static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n) ++{ ++ yaffs_VerifyBlock(dev,bi,n); ++ ++ /* After collection the block should be in the erased state */ ++ /* TODO: This will need to change if we do partial gc */ ++ ++ if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){ ++ T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), ++ n,bi->blockState)); ++ } ++} ++ ++static void yaffs_VerifyBlocks(yaffs_Device *dev) ++{ ++ int i; ++ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; ++ int nIllegalBlockStates = 0; ++ ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ memset(nBlocksPerState,0,sizeof(nBlocksPerState)); ++ ++ ++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); ++ yaffs_VerifyBlock(dev,bi,i); ++ ++ if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) ++ nBlocksPerState[bi->blockState]++; ++ else ++ nIllegalBlockStates++; ++ ++ } ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR))); ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR))); ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates)); ++ if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR))); ++ ++ for(i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("%s %d blocks"TENDSTR), ++ blockStateName[i],nBlocksPerState[i])); ++ ++ if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), ++ dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); ++ ++ if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Erased block count wrong dev %d count %d"TENDSTR), ++ dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); ++ ++ if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), ++ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR))); ++ ++} ++ ++/* ++ * Verify the object header. oh must be valid, but obj and tags may be NULL in which ++ * case those tests will not be performed. ++ */ ++static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) ++{ ++ if(yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ if(!(tags && obj && oh)){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), ++ (__u32)tags,(__u32)obj,(__u32)oh)); ++ return; ++ } ++ ++ if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || ++ oh->type > YAFFS_OBJECT_TYPE_MAX) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), ++ tags->objectId, oh->type)); ++ ++ if(tags->objectId != obj->objectId) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch objectId %d"TENDSTR), ++ tags->objectId, obj->objectId)); ++ ++ ++ /* ++ * Check that the object's parent ids match if parentCheck requested. ++ * ++ * Tests do not apply to the root object. ++ */ ++ ++ if(parentCheck && tags->objectId > 1 && !obj->parent) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), ++ tags->objectId, oh->parentObjectId)); ++ ++ ++ if(parentCheck && obj->parent && ++ oh->parentObjectId != obj->parent->objectId && ++ (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || ++ obj->parent->objectId != YAFFS_OBJECTID_DELETED)) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), ++ tags->objectId, oh->parentObjectId, obj->parent->objectId)); ++ ++ ++ if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header name is NULL"TENDSTR), ++ obj->objectId)); ++ ++ if(tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header name is 0xFF"TENDSTR), ++ obj->objectId)); ++} ++ ++ ++ ++static int yaffs_VerifyTnodeWorker(yaffs_Object * obj, yaffs_Tnode * tn, ++ __u32 level, int chunkOffset) ++{ ++ int i; ++ yaffs_Device *dev = obj->myDev; ++ int ok = 1; ++ int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; ++ ++ if (tn) { ++ if (level > 0) { ++ ++ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){ ++ if (tn->internal[i]) { ++ ok = yaffs_VerifyTnodeWorker(obj, ++ tn->internal[i], ++ level - 1, ++ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); ++ } ++ } ++ } else if (level == 0) { ++ int i; ++ yaffs_ExtendedTags tags; ++ __u32 objectId = obj->objectId; ++ ++ chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; ++ ++ for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){ ++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ ++ if(theChunk > 0){ ++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ ++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags); ++ if(tags.objectId != objectId || tags.chunkId != chunkOffset){ ++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), ++ objectId, chunkOffset, theChunk, ++ tags.objectId, tags.chunkId)); ++ } ++ } ++ chunkOffset++; ++ } ++ } ++ } ++ ++ return ok; ++ ++} ++ ++ ++static void yaffs_VerifyFile(yaffs_Object *obj) ++{ ++ int requiredTallness; ++ int actualTallness; ++ __u32 lastChunk; ++ __u32 x; ++ __u32 i; ++ int ok; ++ yaffs_Device *dev; ++ yaffs_ExtendedTags tags; ++ yaffs_Tnode *tn; ++ __u32 objectId; ++ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ dev = obj->myDev; ++ objectId = obj->objectId; ++ ++ /* Check file size is consistent with tnode depth */ ++ lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; ++ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; ++ requiredTallness = 0; ++ while (x> 0) { ++ x >>= YAFFS_TNODES_INTERNAL_BITS; ++ requiredTallness++; ++ } ++ ++ actualTallness = obj->variant.fileVariant.topLevel; ++ ++ if(requiredTallness > actualTallness ) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), ++ obj->objectId,actualTallness, requiredTallness)); ++ ++ ++ /* Check that the chunks in the tnode tree are all correct. ++ * We do this by scanning through the tnode tree and ++ * checking the tags for every chunk match. ++ */ ++ ++ if(yaffs_SkipNANDVerification(dev)) ++ return; ++ ++ for(i = 1; i <= lastChunk; i++){ ++ tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i); ++ ++ if (tn) { ++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ if(theChunk > 0){ ++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ ++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags); ++ if(tags.objectId != objectId || tags.chunkId != i){ ++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), ++ objectId, i, theChunk, ++ tags.objectId, tags.chunkId)); ++ } ++ } ++ } ++ ++ } ++ ++} ++ ++static void yaffs_VerifyDirectory(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++} ++ ++static void yaffs_VerifyHardLink(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ /* Verify sane equivalent object */ ++} ++ ++static void yaffs_VerifySymlink(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ /* Verify symlink string */ ++} ++ ++static void yaffs_VerifySpecial(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++} ++ ++static void yaffs_VerifyObject(yaffs_Object *obj) ++{ ++ yaffs_Device *dev; ++ ++ __u32 chunkMin; ++ __u32 chunkMax; ++ ++ __u32 chunkIdOk; ++ __u32 chunkIsLive; ++ ++ if(!obj) ++ return; ++ ++ dev = obj->myDev; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Check sane object header chunk */ ++ ++ chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; ++ chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; ++ ++ chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax); ++ chunkIsLive = chunkIdOk && ++ yaffs_CheckChunkBit(dev, ++ obj->chunkId / dev->nChunksPerBlock, ++ obj->chunkId % dev->nChunksPerBlock); ++ if(!obj->fake && ++ (!chunkIdOk || !chunkIsLive)) { ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), ++ obj->objectId,obj->chunkId, ++ chunkIdOk ? "" : ",out of range", ++ chunkIsLive || !chunkIdOk ? "" : ",marked as deleted")); ++ } ++ ++ if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) { ++ yaffs_ExtendedTags tags; ++ yaffs_ObjectHeader *oh; ++ __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__); ++ ++ oh = (yaffs_ObjectHeader *)buffer; ++ ++ yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags); ++ ++ yaffs_VerifyObjectHeader(obj,oh,&tags,1); ++ ++ yaffs_ReleaseTempBuffer(dev,buffer,__LINE__); ++ } ++ ++ /* Verify it has a parent */ ++ if(obj && !obj->fake && ++ (!obj->parent || obj->parent->myDev != dev)){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), ++ obj->objectId,obj->parent)); ++ } ++ ++ /* Verify parent is a directory */ ++ if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), ++ obj->objectId,obj->parent->variantType)); ++ } ++ ++ switch(obj->variantType){ ++ case YAFFS_OBJECT_TYPE_FILE: ++ yaffs_VerifyFile(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ yaffs_VerifySymlink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ yaffs_VerifyDirectory(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ yaffs_VerifyHardLink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ yaffs_VerifySpecial(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ default: ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has illegaltype %d"TENDSTR), ++ obj->objectId,obj->variantType)); ++ break; ++ } ++ ++ ++} ++ ++static void yaffs_VerifyObjects(yaffs_Device *dev) ++{ ++ yaffs_Object *obj; ++ int i; ++ struct list_head *lh; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Iterate through the objects in each hash entry */ ++ ++ for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){ ++ list_for_each(lh, &dev->objectBucket[i].list) { ++ if (lh) { ++ obj = list_entry(lh, yaffs_Object, hashLink); ++ yaffs_VerifyObject(obj); ++ } ++ } ++ } ++ ++} ++ ++ +/* + * Simple hash function. Needs to have a reasonable spread + */ @@ -3804,91 +4562,90 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +} + ++ +static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, + const __u8 * data, + yaffs_ExtendedTags * tags, + int useReserve) +{ ++ int attempts = 0; ++ int writeOk = 0; + int chunk; + -+ int writeOk = 0; -+ int erasedOk = 1; -+ int attempts = 0; -+ yaffs_BlockInfo *bi; -+ + yaffs_InvalidateCheckpoint(dev); + + do { -+ chunk = yaffs_AllocateChunk(dev, useReserve,&bi); -+ -+ if (chunk >= 0) { -+ /* First check this chunk is erased, if it needs checking. -+ * The checking policy (unless forced always on) is as follows: -+ * Check the first page we try to write in a block. -+ * - If the check passes then we don't need to check any more. -+ * - If the check fails, we check again... -+ * If the block has been erased, we don't need to check. -+ * -+ * However, if the block has been prioritised for gc, then -+ * we think there might be something odd about this block -+ * and stop using it. -+ * -+ * Rationale: -+ * We should only ever see chunks that have not been erased -+ * if there was a partially written chunk due to power loss -+ * This checking policy should catch that case with very -+ * few checks and thus save a lot of checks that are most likely not -+ * needed. -+ */ -+ -+ if(bi->gcPrioritise){ -+ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -+ } else { -+#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ yaffs_BlockInfo *bi = 0; ++ int erasedOk = 0; + -+ bi->skipErasedCheck = 0; ++ chunk = yaffs_AllocateChunk(dev, useReserve, &bi); ++ if (chunk < 0) { ++ /* no space */ ++ break; ++ } + -+#endif -+ if(!bi->skipErasedCheck){ -+ erasedOk = yaffs_CheckChunkErased(dev, chunk); -+ if(erasedOk && !bi->gcPrioritise) -+ bi->skipErasedCheck = 1; -+ } ++ /* First check this chunk is erased, if it needs ++ * checking. The checking policy (unless forced ++ * always on) is as follows: ++ * ++ * Check the first page we try to write in a block. ++ * If the check passes then we don't need to check any ++ * more. If the check fails, we check again... ++ * If the block has been erased, we don't need to check. ++ * ++ * However, if the block has been prioritised for gc, ++ * then we think there might be something odd about ++ * this block and stop using it. ++ * ++ * Rationale: We should only ever see chunks that have ++ * not been erased if there was a partially written ++ * chunk due to power loss. This checking policy should ++ * catch that case with very few checks and thus save a ++ * lot of checks that are most likely not needed. ++ */ ++ if (bi->gcPrioritise) { ++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); ++ /* try another chunk */ ++ continue; ++ } + -+ if (!erasedOk) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("**>> yaffs chunk %d was not erased" -+ TENDSTR), chunk)); -+ } else { -+ writeOk = -+ yaffs_WriteChunkWithTagsToNAND(dev, chunk, -+ data, tags); -+ } -+ -+ attempts++; ++ /* let's give it a try */ ++ attempts++; + -+ if (writeOk) { -+ /* -+ * Copy the data into the robustification buffer. -+ * NB We do this at the end to prevent duplicates in the case of a write error. -+ * Todo -+ */ -+ yaffs_HandleWriteChunkOk(dev, chunk, data, tags); -+ -+ } else { -+ /* The erased check or write failed */ -+ yaffs_HandleWriteChunkError(dev, chunk, erasedOk); -+ } ++#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ bi->skipErasedCheck = 0; ++#endif ++ if (!bi->skipErasedCheck) { ++ erasedOk = yaffs_CheckChunkErased(dev, chunk); ++ if (erasedOk != YAFFS_OK) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ("**>> yaffs chunk %d was not erased" ++ TENDSTR), chunk)); ++ ++ /* try another chunk */ ++ continue; + } ++ bi->skipErasedCheck = 1; + } + -+ } while (chunk >= 0 && !writeOk); ++ writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, ++ data, tags); ++ if (writeOk != YAFFS_OK) { ++ yaffs_HandleWriteChunkError(dev, chunk, erasedOk); ++ /* try another chunk */ ++ continue; ++ } ++ ++ /* Copy the data into the robustification buffer */ ++ yaffs_HandleWriteChunkOk(dev, chunk, data, tags); ++ ++ } while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts); + + if (attempts > 1) { + T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs write required %d attempts" TENDSTR), -+ attempts)); ++ (TSTR("**>> yaffs write required %d attempts" TENDSTR), ++ attempts)); ++ + dev->nRetriedWrites += (attempts - 1); + } + @@ -3946,21 +4703,6 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } +} + -+static void yaffs_ReportOddballBlocks(yaffs_Device *dev) -+{ -+ int i; -+ -+ for(i = dev->internalStartBlock; i <= dev->internalEndBlock && (yaffs_traceMask & YAFFS_TRACE_BAD_BLOCKS); i++){ -+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); -+ if(bi->needsRetiring || bi->gcPrioritise) -+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("yaffs block %d%s%s" TENDSTR), -+ i, -+ bi->needsRetiring ? " needs retiring" : "", -+ bi->gcPrioritise ? " gc prioritised" : "")); -+ -+ } -+} -+ +static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk) +{ + @@ -3993,7 +4735,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + YUCHAR *bname = (YUCHAR *) name; + if (bname) { -+ while ((*bname) && (i <= YAFFS_MAX_NAME_LENGTH)) { ++ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { + +#ifdef CONFIG_YAFFS_CASE_INSENSITIVE + sum += yaffs_toupper(*bname) * i; @@ -4101,6 +4843,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs: Could not add tnodes to management list" TENDSTR))); ++ return YAFFS_FAIL; + + } else { + tnl->tnodes = newTnodes; @@ -4225,7 +4968,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } +} + -+__u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos) ++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos) +{ + __u32 *map = (__u32 *)tn; + __u32 bitInMap; @@ -4743,8 +5486,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + /* make these things */ + newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); ++ list = YMALLOC(sizeof(yaffs_ObjectList)); + -+ if (!newObjects) { ++ if (!newObjects || !list) { ++ if(newObjects) ++ YFREE(newObjects); ++ if(list) ++ YFREE(list); + T(YAFFS_TRACE_ALLOCATE, + (TSTR("yaffs: Could not allocate more objects" TENDSTR))); + return YAFFS_FAIL; @@ -4763,15 +5511,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + /* Now add this bunch of Objects to a list for freeing up. */ + -+ list = YMALLOC(sizeof(yaffs_ObjectList)); -+ if (!list) { -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("Could not add objects to management list" TENDSTR))); -+ } else { -+ list->objects = newObjects; -+ list->next = dev->allocatedObjectList; -+ dev->allocatedObjectList = list; -+ } ++ list->objects = newObjects; ++ list->next = dev->allocatedObjectList; ++ dev->allocatedObjectList = list; + + return YAFFS_OK; +} @@ -5028,12 +5770,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +{ + + yaffs_Object *theObject; ++ yaffs_Tnode *tn; + + if (number < 0) { + number = yaffs_CreateNewObjectNumber(dev); + } + + theObject = yaffs_AllocateEmptyObject(dev); ++ if(!theObject) ++ return NULL; ++ ++ if(type == YAFFS_OBJECT_TYPE_FILE){ ++ tn = yaffs_GetTnode(dev); ++ if(!tn){ ++ yaffs_FreeObject(theObject); ++ return NULL; ++ } ++ } ++ ++ + + if (theObject) { + theObject->fake = 0; @@ -5060,8 +5815,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + theObject->variant.fileVariant.scannedFileSize = 0; + theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ + theObject->variant.fileVariant.topLevel = 0; -+ theObject->variant.fileVariant.top = -+ yaffs_GetTnode(dev); ++ theObject->variant.fileVariant.top = tn; + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + INIT_LIST_HEAD(&theObject->variant.directoryVariant. @@ -5106,7 +5860,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + if (str && *str) { + newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); -+ yaffs_strcpy(newStr, str); ++ if(newStr) ++ yaffs_strcpy(newStr, str); + } + + return newStr; @@ -5130,6 +5885,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + const YCHAR * aliasString, __u32 rdev) +{ + yaffs_Object *in; ++ YCHAR *str; + + yaffs_Device *dev = parent->myDev; + @@ -5139,6 +5895,16 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + + in = yaffs_CreateNewObject(dev, -1, type); ++ ++ if(type == YAFFS_OBJECT_TYPE_SYMLINK){ ++ str = yaffs_CloneString(aliasString); ++ if(!str){ ++ yaffs_FreeObject(in); ++ return NULL; ++ } ++ } ++ ++ + + if (in) { + in->chunkId = -1; @@ -5170,8 +5936,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + switch (type) { + case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symLinkVariant.alias = -+ yaffs_CloneString(aliasString); ++ in->variant.symLinkVariant.alias = str; + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + in->variant.hardLinkVariant.equivalentObject = @@ -5362,9 +6127,12 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +{ + int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; + ++ dev->blockInfo = NULL; ++ dev->chunkBits = NULL; ++ + dev->allocationBlock = -1; /* force it to get a new one */ + -+ /* Todo we're assuming the malloc will pass. */ ++ /* If the first allocation strategy fails, thry the alternate one */ + dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); + if(!dev->blockInfo){ + dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); @@ -5372,16 +6140,19 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + else + dev->blockInfoAlt = 0; ++ ++ if(dev->blockInfo){ + -+ /* Set up dynamic blockinfo stuff. */ -+ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ -+ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); -+ if(!dev->chunkBits){ -+ dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); -+ dev->chunkBitsAlt = 1; ++ /* Set up dynamic blockinfo stuff. */ ++ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ ++ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); ++ if(!dev->chunkBits){ ++ dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); ++ dev->chunkBitsAlt = 1; ++ } ++ else ++ dev->chunkBitsAlt = 0; + } -+ else -+ dev->chunkBitsAlt = 0; + + if (dev->blockInfo && dev->chunkBits) { + memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); @@ -5395,17 +6166,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +static void yaffs_DeinitialiseBlocks(yaffs_Device * dev) +{ -+ if(dev->blockInfoAlt) ++ if(dev->blockInfoAlt && dev->blockInfo) + YFREE_ALT(dev->blockInfo); -+ else ++ else if(dev->blockInfo) + YFREE(dev->blockInfo); ++ + dev->blockInfoAlt = 0; + + dev->blockInfo = NULL; + -+ if(dev->chunkBitsAlt) ++ if(dev->chunkBitsAlt && dev->chunkBits) + YFREE_ALT(dev->chunkBits); -+ else ++ else if(dev->chunkBits) + YFREE(dev->chunkBits); + dev->chunkBitsAlt = 0; + dev->chunkBits = NULL; @@ -5462,10 +6234,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + int i; + int iterations; + int dirtiest = -1; -+ int pagesInUse; ++ int pagesInUse = 0; + int prioritised=0; + yaffs_BlockInfo *bi; -+ static int nonAggressiveSkip = 0; + int pendingPrioritisedExist = 0; + + /* First let's see if we need to grab a prioritised block */ @@ -5473,6 +6244,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){ + + bi = yaffs_GetBlockInfo(dev, i); ++ //yaffs_VerifyBlock(dev,bi,i); ++ + if(bi->gcPrioritise) { + pendingPrioritisedExist = 1; + if(bi->blockState == YAFFS_BLOCK_STATE_FULL && @@ -5495,9 +6268,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + * block has only a few pages in use. + */ + -+ nonAggressiveSkip--; ++ dev->nonAggressiveSkip--; + -+ if (!aggressive && (nonAggressiveSkip > 0)) { ++ if (!aggressive && (dev->nonAggressiveSkip > 0)) { + return -1; + } + @@ -5558,7 +6331,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + dev->oldestDirtySequence = 0; + + if (dirtiest > 0) { -+ nonAggressiveSkip = 4; ++ dev->nonAggressiveSkip = 4; + } + + return dirtiest; @@ -5590,7 +6363,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + } + -+ if (erasedOk && (yaffs_traceMask & YAFFS_TRACE_ERASE)) { ++ if (erasedOk && ++ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { + int i; + for (i = 0; i < dev->nChunksPerBlock; i++) { + if (!yaffs_CheckChunkErased @@ -5768,6 +6542,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + int cleanups = 0; + int i; + int isCheckpointBlock; ++ int matchingChunk; + + int chunksBefore = yaffs_GetErasedChunks(dev); + int chunksAfter; @@ -5807,6 +6582,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } else { + + __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ yaffs_VerifyBlock(dev,bi,block); + + for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock; + chunkInBlock < dev->nChunksPerBlock @@ -5832,12 +6609,28 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + ("Collecting page %d, %d %d %d " TENDSTR), + chunkInBlock, tags.objectId, tags.chunkId, + tags.byteCount)); ++ ++ if(object && !yaffs_SkipVerification(dev)){ ++ if(tags.chunkId == 0) ++ matchingChunk = object->chunkId; ++ else if(object->softDeleted) ++ matchingChunk = oldChunk; /* Defeat the test */ ++ else ++ matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL); ++ ++ if(oldChunk != matchingChunk) ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), ++ oldChunk,matchingChunk,tags.objectId, tags.chunkId)); ++ ++ } + + if (!object) { + T(YAFFS_TRACE_ERROR, + (TSTR -+ ("page %d in gc has no object " -+ TENDSTR), oldChunk)); ++ ("page %d in gc has no object: %d %d %d " ++ TENDSTR), oldChunk, ++ tags.objectId, tags.chunkId, tags.byteCount)); + } + + if (object && object->deleted @@ -5894,6 +6687,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + oh->shadowsObject = -1; + tags.extraShadows = 0; + tags.extraIsShrinkHeader = 0; ++ ++ yaffs_VerifyObjectHeader(object,oh,&tags,1); + } + + newChunk = @@ -5950,6 +6745,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + } + ++ yaffs_VerifyCollectedBlock(dev,bi,block); ++ + if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) { + T(YAFFS_TRACE_GC, + (TSTR @@ -5996,7 +6793,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + if(checkpointBlockAdjust < 0) + checkpointBlockAdjust = 0; + -+ if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust)) { ++ if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { + /* We need a block soon...*/ + aggressive = 1; + } else { @@ -6324,11 +7121,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + if (chunkId <= 0) + return; ++ + + dev->nDeletions++; + block = chunkId / dev->nChunksPerBlock; + page = chunkId % dev->nChunksPerBlock; + ++ ++ if(!yaffs_CheckChunkBit(dev,block,page)) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Deleting invalid chunk %d"TENDSTR), ++ chunkId)); ++ + bi = yaffs_GetBlockInfo(dev, block); + + T(YAFFS_TRACE_DELETION, @@ -6439,15 +7243,19 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + int newChunkId; + yaffs_ExtendedTags newTags; ++ yaffs_ExtendedTags oldTags; + + __u8 *buffer = NULL; + YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; + + yaffs_ObjectHeader *oh = NULL; ++ ++ yaffs_strcpy(oldName,"silly old name"); + + if (!in->fake || force) { + + yaffs_CheckGarbageCollection(dev); ++ yaffs_CheckObjectDetailsLoaded(in); + + buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); + oh = (yaffs_ObjectHeader *) buffer; @@ -6456,7 +7264,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + if (prevChunkId >= 0) { + result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, -+ buffer, NULL); ++ buffer, &oldTags); ++ ++ yaffs_VerifyObjectHeader(in,oh,&oldTags,0); ++ + memcpy(oldName, oh->name, sizeof(oh->name)); + } + @@ -6490,7 +7301,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + if (name && *name) { + memset(oh->name, 0, sizeof(oh->name)); + yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); -+ } else if (prevChunkId) { ++ } else if (prevChunkId>=0) { + memcpy(oh->name, oldName, sizeof(oh->name)); + } else { + memset(oh->name, 0, sizeof(oh->name)); @@ -6544,6 +7355,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; + newTags.extraObjectType = in->variantType; + ++ yaffs_VerifyObjectHeader(in,oh,&newTags,1); ++ + /* Create new chunk in NAND */ + newChunkId = + yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, @@ -6866,6 +7679,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head) +{ + yaffs_CheckpointValidity cp; ++ ++ memset(&cp,0,sizeof(cp)); ++ + cp.structType = sizeof(cp); + cp.magic = YAFFS_MAGIC; + cp.version = YAFFS_CHECKPOINT_VERSION; @@ -7102,12 +7918,15 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + yaffs_Device *dev = obj->myDev; + yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; + yaffs_Tnode *tn; ++ int nread = 0; + + ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk)); + + while(ok && (~baseChunk)){ ++ nread++; + /* Read level 0 tnode */ + ++ + /* printf("read tnode at %d\n",baseChunk); */ + tn = yaffs_GetTnodeRaw(dev); + if(tn) @@ -7121,6 +7940,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + fileStructPtr, + baseChunk, + tn) ? 1 : 0; ++ + } + + if(ok) @@ -7128,6 +7948,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + } + ++ T(YAFFS_TRACE_CHECKPOINT,( ++ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), ++ nread,baseChunk,ok)); ++ + return ok ? 1 : 0; +} + @@ -7188,16 +8012,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + while(ok && !done) { + ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp)); + if(cp.structType != sizeof(cp)) { -+ /* printf("structure parsing failed\n"); */ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("struct size %d instead of %d ok %d"TENDSTR), ++ cp.structType,sizeof(cp),ok)); + ok = 0; + } + ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), ++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId)); ++ + if(ok && cp.objectId == ~0) + done = 1; + else if(ok){ + obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType); -+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d obj addr %x" TENDSTR), -+ cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj)); + if(obj) { + yaffs_CheckpointObjectToObject(obj,&cp); + if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) { @@ -7219,22 +8045,76 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + return ok ? 1 : 0; +} + -+static int yaffs_WriteCheckpointData(yaffs_Device *dev) ++static int yaffs_WriteCheckpointSum(yaffs_Device *dev) +{ ++ __u32 checkpointSum; ++ int ok; ++ ++ yaffs_GetCheckpointSum(dev,&checkpointSum); ++ ++ ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum)); ++ ++ if(!ok) ++ return 0; ++ ++ return 1; ++} + ++static int yaffs_ReadCheckpointSum(yaffs_Device *dev) ++{ ++ __u32 checkpointSum0; ++ __u32 checkpointSum1; + int ok; + -+ ok = yaffs_CheckpointOpen(dev,1); ++ yaffs_GetCheckpointSum(dev,&checkpointSum0); ++ ++ ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1)); ++ ++ if(!ok) ++ return 0; ++ ++ if(checkpointSum0 != checkpointSum1) ++ return 0; + ++ return 1; ++} ++ ++ ++static int yaffs_WriteCheckpointData(yaffs_Device *dev) ++{ ++ ++ int ok = 1; ++ ++ if(dev->skipCheckpointWrite || !dev->isYaffs2){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR))); ++ ok = 0; ++ } ++ + if(ok) ++ ok = yaffs_CheckpointOpen(dev,1); ++ ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs_WriteCheckpointValidityMarker(dev,1); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint device" TENDSTR))); + ok = yaffs_WriteCheckpointDevice(dev); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint objects" TENDSTR))); + ok = yaffs_WriteCheckpointObjects(dev); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs_WriteCheckpointValidityMarker(dev,0); -+ ++ } ++ ++ if(ok){ ++ ok = yaffs_WriteCheckpointSum(dev); ++ } ++ ++ + if(!yaffs_CheckpointClose(dev)) + ok = 0; + @@ -7248,20 +8128,37 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +static int yaffs_ReadCheckpointData(yaffs_Device *dev) +{ -+ int ok; ++ int ok = 1; + -+ ok = yaffs_CheckpointOpen(dev,0); /* open for read */ ++ if(dev->skipCheckpointRead || !dev->isYaffs2){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR))); ++ ok = 0; ++ } + + if(ok) ++ ok = yaffs_CheckpointOpen(dev,0); /* open for read */ ++ ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs_ReadCheckpointValidityMarker(dev,1); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint device" TENDSTR))); + ok = yaffs_ReadCheckpointDevice(dev); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR))); + ok = yaffs_ReadCheckpointObjects(dev); -+ if(ok) ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs_ReadCheckpointValidityMarker(dev,0); -+ -+ ++ } ++ ++ if(ok){ ++ ok = yaffs_ReadCheckpointSum(dev); ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok)); ++ } + + if(!yaffs_CheckpointClose(dev)) + ok = 0; @@ -7289,13 +8186,19 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +int yaffs_CheckpointSave(yaffs_Device *dev) +{ -+ yaffs_ReportOddballBlocks(dev); ++ + T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); + -+ if(!dev->isCheckpointed) ++ yaffs_VerifyObjects(dev); ++ yaffs_VerifyBlocks(dev); ++ yaffs_VerifyFreeChunks(dev); ++ ++ if(!dev->isCheckpointed) { ++ yaffs_InvalidateCheckpoint(dev); + yaffs_WriteCheckpointData(dev); ++ } + -+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); + + return dev->isCheckpointed; +} @@ -7304,13 +8207,17 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +{ + int retval; + T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); -+ ++ + retval = yaffs_ReadCheckpointData(dev); + ++ if(dev->isCheckpointed){ ++ yaffs_VerifyObjects(dev); ++ yaffs_VerifyBlocks(dev); ++ yaffs_VerifyFreeChunks(dev); ++ } ++ + T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); + -+ yaffs_ReportOddballBlocks(dev); -+ + return retval; +} + @@ -7687,7 +8594,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + int newFullChunks; + + yaffs_Device *dev = in->myDev; -+ ++ + yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); + + yaffs_FlushFilesChunkCache(in); @@ -7728,7 +8635,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + in->variant.fileVariant.fileSize = newSize; + + yaffs_PruneFileStructure(dev, &in->variant.fileVariant); ++ } else { ++ /* newsSize > oldFileSize */ ++ in->variant.fileVariant.fileSize = newSize; + } ++ ++ ++ + /* Write a new object header. + * show we've shrunk the file, if need be + * Do this only if the file is not in the deleted directories. @@ -7792,7 +8705,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { + /* Move to the unlinked directory so we have a record that it was deleted. */ -+ yaffs_ChangeObjectName(in, in->myDev->deletedDir, NULL, 0, 0); ++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0); + + } + @@ -7830,7 +8743,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + if (immediateDeletion) { + retVal = + yaffs_ChangeObjectName(in, in->myDev->deletedDir, -+ NULL, 0, 0); ++ "deleted", 0, 0); + T(YAFFS_TRACE_TRACING, + (TSTR("yaffs: immediate deletion of file %d" TENDSTR), + in->objectId)); @@ -7843,7 +8756,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } else { + retVal = + yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, -+ NULL, 0, 0); ++ "unlinked", 0, 0); + } + + } @@ -8104,13 +9017,15 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + int deleted; + yaffs_BlockState state; + yaffs_Object *hardList = NULL; -+ yaffs_Object *hl; + yaffs_BlockInfo *bi; + int sequenceNumber; + yaffs_ObjectHeader *oh; + yaffs_Object *in; + yaffs_Object *parent; + int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; ++ ++ int alloc_failed = 0; ++ + + __u8 *chunkData; + @@ -8134,6 +9049,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + if (dev->isYaffs2) { + blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); ++ if(!blockIndex) ++ return YAFFS_FAIL; + } + + /* Scan all the blocks to determine their state */ @@ -8215,7 +9132,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + + /* For each block.... */ -+ for (blockIterator = startIterator; blockIterator <= endIterator; ++ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; + blockIterator++) { + + if (dev->isYaffs2) { @@ -8231,7 +9148,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + deleted = 0; + + /* For each chunk in each block that needs scanning....*/ -+ for (c = 0; c < dev->nChunksPerBlock && ++ for (c = 0; !alloc_failed && c < dev->nChunksPerBlock && + state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { + /* Read the tags and decide what to do */ + chunk = blk * dev->nChunksPerBlock + c; @@ -8299,12 +9216,20 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + /* PutChunkIntoFile checks for a clash (two data chunks with + * the same chunkId). + */ -+ yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, -+ 1); ++ ++ if(!in) ++ alloc_failed = 1; ++ ++ if(in){ ++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1)) ++ alloc_failed = 1; ++ } ++ + endpos = + (tags.chunkId - 1) * dev->nDataBytesPerChunk + + tags.byteCount; -+ if (in->variantType == YAFFS_OBJECT_TYPE_FILE ++ if (in && ++ in->variantType == YAFFS_OBJECT_TYPE_FILE + && in->variant.fileVariant.scannedFileSize < + endpos) { + in->variant.fileVariant. @@ -8349,14 +9274,17 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + objectId, + oh->type); + -+ if (oh->shadowsObject > 0) { ++ if(!in) ++ alloc_failed = 1; ++ ++ if (in && oh->shadowsObject > 0) { + yaffs_HandleShadowedObject(dev, + oh-> + shadowsObject, + 0); + } + -+ if (in->valid) { ++ if (in && in->valid) { + /* We have already filled this one. We have a duplicate and need to resolve it. */ + + unsigned existingSerial = in->serial; @@ -8377,7 +9305,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + } + -+ if (!in->valid && ++ if (in && !in->valid && + (tags.objectId == YAFFS_OBJECTID_ROOT || + tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { + /* We only load some info, don't fiddle with directory structure */ @@ -8402,7 +9330,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +#endif + in->chunkId = chunk; + -+ } else if (!in->valid) { ++ } else if (in && !in->valid) { + /* we need to load this info */ + + in->valid = 1; @@ -8511,9 +9439,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symLinkVariant. -+ alias = ++ in->variant.symLinkVariant.alias = + yaffs_CloneString(oh->alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; + break; + } + @@ -8575,7 +9504,12 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); + ++ if(alloc_failed){ ++ return YAFFS_FAIL; ++ } ++ + T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); ++ + + return YAFFS_OK; +} @@ -8587,13 +9521,17 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + yaffs_Device *dev = in->myDev; + yaffs_ExtendedTags tags; + int result; -+ ++ int alloc_failed = 0; ++ ++ if(!in) ++ return; ++ +#if 0 + T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR), + in->objectId, + in->lazyLoaded ? "not yet" : "already")); +#endif -+ ++ + if(in->lazyLoaded){ + in->lazyLoaded = 0; + chunkData = yaffs_GetTempBuffer(dev, __LINE__); @@ -8620,9 +9558,12 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +#endif + yaffs_SetObjectName(in, oh->name); + -+ if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) ++ if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){ + in->variant.symLinkVariant.alias = + yaffs_CloneString(oh->alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; /* Not returned to caller */ ++ } + + yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__); + } @@ -8656,6 +9597,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + int isShrink; + int foundChunksInBlock; + int equivalentObjectId; ++ int alloc_failed = 0; + + + yaffs_BlockIndex *blockIndex = NULL; @@ -8688,6 +9630,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + return YAFFS_FAIL; + } + ++ dev->blocksInCheckpoint = 0; ++ + chunkData = yaffs_GetTempBuffer(dev, __LINE__); + + /* Scan all the blocks to determine their state */ @@ -8711,7 +9655,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + + if(state == YAFFS_BLOCK_STATE_CHECKPOINT){ -+ /* todo .. fix free space ? */ ++ dev->blocksInCheckpoint++; + + } else if (state == YAFFS_BLOCK_STATE_DEAD) { + T(YAFFS_TRACE_BAD_BLOCKS, @@ -8756,10 +9700,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + /* Sort the blocks */ +#ifndef CONFIG_YAFFS_USE_OWN_SORT -+ { -+ /* Use qsort now. */ -+ qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp); -+ } ++ yaffs_qsort(blockIndex, nBlocksToScan, ++ sizeof(yaffs_BlockIndex), ybicmp); +#else + { + /* Dungy old bubble sort... */ @@ -8789,7 +9731,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); + + /* For each block.... backwards */ -+ for (blockIterator = endIterator; blockIterator >= startIterator; ++ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; + blockIterator--) { + /* Cooperative multitasking! This loop can run for so + long that watchdog timers expire. */ @@ -8799,18 +9741,22 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + blk = blockIndex[blockIterator].block; + + bi = yaffs_GetBlockInfo(dev, blk); ++ ++ + state = bi->blockState; + + deleted = 0; + + /* For each chunk in each block that needs scanning.... */ + foundChunksInBlock = 0; -+ for (c = dev->nChunksPerBlock - 1; c >= 0 && ++ for (c = dev->nChunksPerBlock - 1; ++ !alloc_failed && c >= 0 && + (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + /* Scan backwards... + * Read the tags and decide what to do + */ ++ + chunk = blk * dev->nChunksPerBlock + c; + + result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, @@ -8888,12 +9834,20 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + tags. + objectId, + YAFFS_OBJECT_TYPE_FILE); -+ if (in->variantType == YAFFS_OBJECT_TYPE_FILE ++ if(!in){ ++ /* Out of memory */ ++ alloc_failed = 1; ++ } ++ ++ if (in && ++ in->variantType == YAFFS_OBJECT_TYPE_FILE + && chunkBase < + in->variant.fileVariant.shrinkSize) { + /* This has not been invalidated by a resize */ -+ yaffs_PutChunkIntoFile(in, tags.chunkId, -+ chunk, -1); ++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, ++ chunk, -1)){ ++ alloc_failed = 1; ++ } + + /* File size is calculated by looking at the data chunks if we have not + * seen an object header yet. Stop this practice once we find an object header. @@ -8914,7 +9868,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + scannedFileSize; + } + -+ } else { ++ } else if(in) { + /* This chunk has been invalidated by a resize, so delete */ + yaffs_DeleteChunk(dev, chunk, 1, __LINE__); + @@ -9202,16 +10156,21 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: -+ if(oh) ++ if(oh){ + in->variant.symLinkVariant.alias = + yaffs_CloneString(oh-> + alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; ++ } + break; + } + + } ++ + } -+ } ++ ++ } /* End of scanning for each chunk */ + + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + /* If we got this far while scanning, then the block is fully allocated. */ @@ -9274,6 +10233,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + } + + yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); ++ ++ if(alloc_failed){ ++ return YAFFS_FAIL; ++ } + + T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); + @@ -9381,7 +10344,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + */ + yaffs_GetObjectName(l, buffer, + YAFFS_MAX_NAME_LENGTH); -+ if (yaffs_strcmp(name, buffer) == 0) { ++ if (yaffs_strncmp(name, buffer,YAFFS_MAX_NAME_LENGTH) == 0) { + return l; + } + @@ -9437,6 +10400,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { + /* We want the object id of the equivalent object, not this one */ + obj = obj->variant.hardLinkVariant.equivalentObject; ++ yaffs_CheckObjectDetailsLoaded(obj); + } + return obj; + @@ -9674,7 +10638,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 +} + + -+static void yaffs_CreateInitialDirectories(yaffs_Device *dev) ++static int yaffs_CreateInitialDirectories(yaffs_Device *dev) +{ + /* Initialise the unlinked, deleted, root and lost and found directories */ + @@ -9683,6 +10647,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + dev->unlinkedDir = + yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); ++ + dev->deletedDir = + yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); + @@ -9692,11 +10657,18 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + dev->lostNFoundDir = + yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, + YAFFS_LOSTNFOUND_MODE | S_IFDIR); -+ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); ++ ++ if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){ ++ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); ++ return YAFFS_OK; ++ } ++ ++ return YAFFS_FAIL; +} + +int yaffs_GutsInitialise(yaffs_Device * dev) +{ ++ int init_failed = 0; + unsigned x; + int bits; + @@ -9868,71 +10840,111 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ + + /* Initialise temporary buffers and caches. */ -+ { -+ int i; -+ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -+ dev->tempBuffer[i].line = 0; /* not in use */ -+ dev->tempBuffer[i].buffer = -+ YMALLOC_DMA(dev->nDataBytesPerChunk); -+ } -+ } ++ if(!yaffs_InitialiseTempBuffers(dev)) ++ init_failed = 1; + -+ if (dev->nShortOpCaches > 0) { ++ dev->srCache = NULL; ++ dev->gcCleanupList = NULL; ++ ++ ++ if (!init_failed && ++ dev->nShortOpCaches > 0) { + int i; ++ __u8 *buf; ++ int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); + + if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) { + dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; + } + -+ dev->srCache = -+ YMALLOC(dev->nShortOpCaches * sizeof(yaffs_ChunkCache)); -+ -+ for (i = 0; i < dev->nShortOpCaches; i++) { ++ buf = dev->srCache = YMALLOC(srCacheBytes); ++ ++ if(dev->srCache) ++ memset(dev->srCache,0,srCacheBytes); ++ ++ for (i = 0; i < dev->nShortOpCaches && buf; i++) { + dev->srCache[i].object = NULL; + dev->srCache[i].lastUse = 0; + dev->srCache[i].dirty = 0; -+ dev->srCache[i].data = YMALLOC_DMA(dev->nDataBytesPerChunk); ++ dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk); + } ++ if(!buf) ++ init_failed = 1; ++ + dev->srLastUse = 0; + } + + dev->cacheHits = 0; + -+ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); ++ if(!init_failed){ ++ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); ++ if(!dev->gcCleanupList) ++ init_failed = 1; ++ } + + if (dev->isYaffs2) { + dev->useHeaderFileSize = 1; + } -+ -+ yaffs_InitialiseBlocks(dev); ++ if(!init_failed && !yaffs_InitialiseBlocks(dev)) ++ init_failed = 1; ++ + yaffs_InitialiseTnodes(dev); + yaffs_InitialiseObjects(dev); + -+ yaffs_CreateInitialDirectories(dev); ++ if(!init_failed && !yaffs_CreateInitialDirectories(dev)) ++ init_failed = 1; + + -+ /* Now scan the flash. */ -+ if (dev->isYaffs2) { -+ if(yaffs_CheckpointRestore(dev)) { -+ T(YAFFS_TRACE_CHECKPOINT, -+ (TSTR("yaffs: restored from checkpoint" TENDSTR))); -+ } else { ++ if(!init_failed){ ++ /* Now scan the flash. */ ++ if (dev->isYaffs2) { ++ if(yaffs_CheckpointRestore(dev)) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: restored from checkpoint" TENDSTR))); ++ } else { + -+ /* Clean up the mess caused by an aborted checkpoint load -+ * and scan backwards. -+ */ -+ yaffs_DeinitialiseBlocks(dev); -+ yaffs_DeinitialiseTnodes(dev); -+ yaffs_DeinitialiseObjects(dev); -+ yaffs_InitialiseBlocks(dev); -+ yaffs_InitialiseTnodes(dev); -+ yaffs_InitialiseObjects(dev); -+ yaffs_CreateInitialDirectories(dev); ++ /* Clean up the mess caused by an aborted checkpoint load ++ * and scan backwards. ++ */ ++ yaffs_DeinitialiseBlocks(dev); ++ yaffs_DeinitialiseTnodes(dev); ++ yaffs_DeinitialiseObjects(dev); ++ ++ ++ dev->nErasedBlocks = 0; ++ dev->nFreeChunks = 0; ++ dev->allocationBlock = -1; ++ dev->allocationPage = -1; ++ dev->nDeletedFiles = 0; ++ dev->nUnlinkedFiles = 0; ++ dev->nBackgroundDeletions = 0; ++ dev->oldestDirtySequence = 0; ++ ++ if(!init_failed && !yaffs_InitialiseBlocks(dev)) ++ init_failed = 1; ++ ++ yaffs_InitialiseTnodes(dev); ++ yaffs_InitialiseObjects(dev); + -+ yaffs_ScanBackwards(dev); -+ } -+ }else -+ yaffs_Scan(dev); ++ if(!init_failed && !yaffs_CreateInitialDirectories(dev)) ++ init_failed = 1; ++ ++ if(!init_failed && !yaffs_ScanBackwards(dev)) ++ init_failed = 1; ++ } ++ }else ++ if(!yaffs_Scan(dev)) ++ init_failed = 1; ++ } ++ ++ if(init_failed){ ++ /* Clean up the mess */ ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); ++ ++ yaffs_Deinitialise(dev); ++ return YAFFS_FAIL; ++ } + + /* Zero out stats */ + dev->nPageReads = 0; @@ -9944,6 +10956,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + dev->nRetiredBlocks = 0; + + yaffs_VerifyFreeChunks(dev); ++ yaffs_VerifyBlocks(dev); ++ + + T(YAFFS_TRACE_TRACING, + (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); @@ -9959,13 +10973,17 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + yaffs_DeinitialiseBlocks(dev); + yaffs_DeinitialiseTnodes(dev); + yaffs_DeinitialiseObjects(dev); -+ if (dev->nShortOpCaches > 0) { ++ if (dev->nShortOpCaches > 0 && ++ dev->srCache) { + + for (i = 0; i < dev->nShortOpCaches; i++) { -+ YFREE(dev->srCache[i].data); ++ if(dev->srCache[i].data) ++ YFREE(dev->srCache[i].data); ++ dev->srCache[i].data = NULL; + } + + YFREE(dev->srCache); ++ dev->srCache = NULL; + } + + YFREE(dev->gcCleanupList); @@ -10056,9 +11074,15 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + +static void yaffs_VerifyFreeChunks(yaffs_Device * dev) +{ -+ int counted = yaffs_CountFreeChunks(dev); ++ int counted; ++ int difference; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ counted = yaffs_CountFreeChunks(dev); + -+ int difference = dev->nFreeChunks - counted; ++ difference = dev->nFreeChunks - counted; + + if (difference) { + T(YAFFS_TRACE_ALWAYS, @@ -10090,15 +11114,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.dev/fs/yaffs2 + + return YAFFS_OK; +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_guts.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_guts.h 2007-05-26 21:13:40.732658360 +0200 -@@ -0,0 +1,893 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_guts.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.h 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,902 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_guts.h: Configuration etc for yaffs_guts ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -10107,10 +11130,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + * 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. -+ * -+ * $Id: yaffs_guts.h,v 1.25 2006/10/13 08:52:49 charles Exp $ + */ + +#ifndef __YAFFS_GUTS_H__ @@ -10163,9 +11183,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + +#define YAFFS_OBJECT_SPACE 0x40000 + -+#define YAFFS_NCHECKPOINT_OBJECTS 5000 -+ -+#define YAFFS_CHECKPOINT_VERSION 2 ++#define YAFFS_CHECKPOINT_VERSION 3 + +#ifdef CONFIG_YAFFS_UNICODE +#define YAFFS_MAX_NAME_LENGTH 127 @@ -10194,6 +11212,12 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + +#define YAFFS_N_TEMP_BUFFERS 4 + ++/* 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. ++ * Default to something in the order of 5 to 10 blocks worth of chunks. ++ */ ++#define YAFFS_WR_ATTEMPTS (5*64) ++ +/* Sequence numbers are used in YAFFS2 to determine block allocation order. + * 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 @@ -10262,6 +11286,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + YAFFS_OBJECT_TYPE_SPECIAL +} yaffs_ObjectType; + ++#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL ++ +typedef struct { + + unsigned validMarker0; @@ -10364,6 +11390,9 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + /* This block has failed and is not in use */ +} yaffs_BlockState; + ++#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) ++ ++ +typedef struct { + + int softDeletions:10; /* number of soft deleted pages */ @@ -10372,7 +11401,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + __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 bank check has failed 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 */ + @@ -10631,9 +11660,6 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + int nReservedBlocks; /* We want this tuneable so that we can reduce */ + /* reserved blocks on NOR and RAM. */ + -+ /* Stuff used by the partitioned checkpointing mechanism */ -+ int checkpointStartBlock; -+ int checkpointEndBlock; + + /* Stuff used by the shared space checkpointing mechanism */ + /* If this value is zero, then this mechanism is disabled */ @@ -10695,6 +11721,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + + + /* End of stuff that must be set before initialisation. */ ++ ++ /* Checkpoint control. Can be set before or after initialisation */ ++ __u8 skipCheckpointRead; ++ __u8 skipCheckpointWrite; + + /* Runtime parameters. Set up by YAFFS. */ + @@ -10750,6 +11780,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + int checkpointNextBlock; + int *checkpointBlockList; + int checkpointMaxBlocks; ++ __u32 checkpointSum; ++ __u32 checkpointXor; + + /* Block Info */ + yaffs_BlockInfo *blockInfo; @@ -10786,6 +11818,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 + 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; @@ -10987,15 +12020,259 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.dev/fs/yaffs2 +void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); + +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffsinterface.h linux-2.6.21.1.dev/fs/yaffs2/yaffsinterface.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffsinterface.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffsinterface.h 2007-05-26 21:13:40.732658360 +0200 -@@ -0,0 +1,23 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,241 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffsinterface.h: Interface to the guts of yaffs. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++const char *yaffs_mtdif_c_version = ++ "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $"; ++ ++#include "yportenv.h" ++ ++ ++#include "yaffs_mtdif.h" ++ ++#include "linux/mtd/mtd.h" ++#include "linux/types.h" ++#include "linux/time.h" ++#include "linux/mtd/nand.h" ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) ++static struct nand_oobinfo yaffs_oobinfo = { ++ .useecc = 1, ++ .eccbytes = 6, ++ .eccpos = {8, 9, 10, 13, 14, 15} ++}; ++ ++static struct nand_oobinfo yaffs_noeccinfo = { ++ .useecc = 0, ++}; ++#endif ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) ++{ ++ oob[0] = spare->tagByte0; ++ oob[1] = spare->tagByte1; ++ oob[2] = spare->tagByte2; ++ oob[3] = spare->tagByte3; ++ oob[4] = spare->tagByte4; ++ oob[5] = spare->tagByte5 & 0x3f; ++ oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80; ++ oob[5] |= spare->pageStatus == 0 ? 0: 0x40; ++ oob[6] = spare->tagByte6; ++ oob[7] = spare->tagByte7; ++} ++ ++static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) ++{ ++ struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; ++ spare->tagByte0 = oob[0]; ++ spare->tagByte1 = oob[1]; ++ spare->tagByte2 = oob[2]; ++ spare->tagByte3 = oob[3]; ++ spare->tagByte4 = oob[4]; ++ spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; ++ spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; ++ spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; ++ spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; ++ spare->tagByte6 = oob[6]; ++ spare->tagByte7 = oob[7]; ++ spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; ++ ++ nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ ++} ++#endif ++ ++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_Spare * spare) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#endif ++ size_t dummy; ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ __u8 spareAsBytes[8]; /* OOB */ ++ ++ if (data && !spare) ++ retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data); ++ else if (spare) { ++ if (dev->useNANDECC) { ++ translate_spare2oob(spare, spareAsBytes); ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = 8; /* temp hack */ ++ } else { ++ ops.mode = MTD_OOB_RAW; ++ ops.ooblen = YAFFS_BYTES_PER_SPARE; ++ } ++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ++ ops.datbuf = (u8 *)data; ++ ops.ooboffs = 0; ++ ops.oobbuf = spareAsBytes; ++ retval = mtd->write_oob(mtd, addr, &ops); ++ } ++#else ++ __u8 *spareAsBytes = (__u8 *) spare; ++ ++ if (data && spare) { ++ if (dev->useNANDECC) ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_oobinfo); ++ else ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_noeccinfo); ++ } else { ++ if (data) ++ retval = ++ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (spare) ++ retval = ++ mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, ++ &dummy, spareAsBytes); ++ } ++#endif ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, ++ yaffs_Spare * spare) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#endif ++ size_t dummy; ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ __u8 spareAsBytes[8]; /* OOB */ ++ ++ if (data && !spare) ++ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data); ++ else if (spare) { ++ if (dev->useNANDECC) { ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = 8; /* temp hack */ ++ } else { ++ ops.mode = MTD_OOB_RAW; ++ ops.ooblen = YAFFS_BYTES_PER_SPARE; ++ } ++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ++ ops.datbuf = data; ++ ops.ooboffs = 0; ++ ops.oobbuf = spareAsBytes; ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (dev->useNANDECC) ++ translate_oob2spare(spare, spareAsBytes); ++ } ++#else ++ __u8 *spareAsBytes = (__u8 *) spare; ++ ++ if (data && spare) { ++ if (dev->useNANDECC) { ++ /* Careful, this call adds 2 ints */ ++ /* to the end of the spare data. Calling function */ ++ /* should allocate enough memory for spare, */ ++ /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_oobinfo); ++ } else { ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_noeccinfo); ++ } ++ } else { ++ if (data) ++ retval = ++ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (spare) ++ retval = ++ mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, ++ &dummy, spareAsBytes); ++ } ++#endif ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++ __u32 addr = ++ ((loff_t) blockNumber) * dev->nDataBytesPerChunk ++ * dev->nChunksPerBlock; ++ struct erase_info ei; ++ int retval = 0; ++ ++ ei.mtd = mtd; ++ ei.addr = addr; ++ ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; ++ ei.time = 1000; ++ ei.retries = 2; ++ ei.callback = NULL; ++ ei.priv = (u_long) dev; ++ ++ /* Todo finish off the ei if required */ ++ ++ sema_init(&dev->sem, 0); ++ ++ retval = mtd->erase(mtd, &ei); ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_InitialiseNAND(yaffs_Device * dev) ++{ ++ return YAFFS_OK; ++} ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,27 @@ ++/* ++ * 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> @@ -11005,38 +12282,854 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffsinterface.h linux-2.6.21.1.dev/fs/ya + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_MTDIF_H__ ++#define __YAFFS_MTDIF_H__ ++ ++#include "yaffs_guts.h" ++ ++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_Spare * spare); ++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, ++ yaffs_Spare * spare); ++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber); ++int nandmtd_InitialiseNAND(yaffs_Device * dev); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1-compat.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1-compat.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1-compat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1-compat.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,434 @@ ++From ian@brightstareng.com Fri May 18 15:06:49 2007 ++From ian@brightstareng.com Fri May 18 15:08:21 2007 ++Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com) ++ by apollo.linkchoose.co.uk with esmtp (Exim 4.60) ++ (envelope-from <ian@brightstareng.com>) ++ id 1Hp380-00011e-T6 ++ for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100 ++Received: from localhost (localhost.localdomain [127.0.0.1]) ++ by zebra.brightstareng.com (Postfix) with ESMTP ++ id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT) ++Received: from zebra.brightstareng.com ([127.0.0.1]) ++ by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP ++ id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT) ++Received: from pippin (unknown [192.168.1.25]) ++ by zebra.brightstareng.com (Postfix) with ESMTP ++ id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT) ++From: Ian McDonnell <ian@brightstareng.com> ++To: David Goodenough <david.goodenough@linkchoose.co.uk> ++Subject: Re: something tested this time -- yaffs_mtdif1-compat.c ++Date: Fri, 18 May 2007 10:06:49 -0400 ++User-Agent: KMail/1.9.1 ++References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk> ++In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk> ++Cc: Andrea Conti <alyf@alyf.net>, ++ Charles Manning <manningc2@actrix.gen.nz> ++MIME-Version: 1.0 ++Content-Type: Multipart/Mixed; ++ boundary="Boundary-00=_5LbTGmt62YoutxM" ++Message-Id: <200705181006.49860.ian@brightstareng.com> ++X-Virus-Scanned: by amavisd-new at brightstareng.com ++Status: R ++X-Status: NT ++X-KMail-EncryptionState: ++X-KMail-SignatureState: ++X-KMail-MDN-Sent: ++ ++--Boundary-00=_5LbTGmt62YoutxM ++Content-Type: text/plain; ++ charset="iso-8859-15" ++Content-Transfer-Encoding: 7bit ++Content-Disposition: inline ++ ++David, Andrea, ++ ++On Friday 18 May 2007 08:34, you wrote: ++> Yea team. With this fix in place (I put it in the wrong place ++> at first) I can now mount and ls the Yaffs partition without ++> an error messages! ++ ++Good news! ++ ++Attached is a newer yaffs_mtdif1.c with a bandaid to help the ++2.6.18 and 2.6.19 versions of MTD not trip on the oob read. ++See the LINUX_VERSION_CODE conditional in ++nandmtd1_ReadChunkWithTagsFromNAND. ++ ++-imcd ++ ++--Boundary-00=_5LbTGmt62YoutxM ++Content-Type: text/x-csrc; ++ charset="iso-8859-15"; ++ name="yaffs_mtdif1.c" ++Content-Transfer-Encoding: 7bit ++Content-Disposition: attachment; ++ filename="yaffs_mtdif1.c" ++ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. + * ++ * Copyright (C) 2002 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. + */ + -+#ifndef __YAFFSINTERFACE_H__ -+#define __YAFFSINTERFACE_H__ ++/* ++ * This module provides the interface between yaffs_nand.c and the ++ * MTD API. This version is used when the MTD interface supports the ++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, ++ * and we have small-page NAND device. ++ * ++ * These functions are invoked via function pointers in yaffs_nand.c. ++ * This replaces functionality provided by functions in yaffs_mtdif.c ++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are ++ * called in yaffs_mtdif.c when the function pointers are NULL. ++ * We assume the MTD layer is performing ECC (useNANDECC is true). ++ */ + -+int yaffs_Initialise(unsigned nBlocks); ++#include "yportenv.h" ++#include "yaffs_guts.h" ++#include "yaffs_packedtags1.h" ++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC ++ ++#include "linux/kernel.h" ++#include "linux/version.h" ++#include "linux/types.h" ++#include "linux/mtd/mtd.h" ++ ++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ ++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $"; ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++# define YTAG1_SIZE 8 ++#else ++# define YTAG1_SIZE 9 ++#endif ++ ++#if 0 ++/* Use the following nand_ecclayout with MTD when using ++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. ++ * If you have existing Yaffs images and the byte order differs from this, ++ * adjust 'oobfree' to match your existing Yaffs data. ++ * ++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the ++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to ++ * the 9th byte. ++ * ++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 ++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P ++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus ++ * byte and B is the small-page bad-block indicator byte. ++ */ ++static struct nand_ecclayout nand_oob_16 = { ++ .eccbytes = 6, ++ .eccpos = { 8, 9, 10, 13, 14, 15 }, ++ .oobavail = 9, ++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } ++}; ++#endif ++ ++/* Write a chunk (page) of data to NAND. ++ * ++ * Caller always provides ExtendedTags data which are converted to a more ++ * compact (packed) form for storage in NAND. A mini-ECC runs over the ++ * contents of the tags meta-data; used to valid the tags when read. ++ * ++ * - Pack ExtendedTags to PackedTags1 form ++ * - Compute mini-ECC for PackedTags1 ++ * - Write data and packed tags to NAND. ++ * ++ * Note: Due to the use of the PackedTags1 meta-data which does not include ++ * a full sequence number (as found in the larger PackedTags2 form) it is ++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as ++ * discarded and dirty. This is not ideal: newer NAND parts are supposed ++ * to be written just once. When Yaffs performs this operation, this ++ * function is called with a NULL data pointer -- calling MTD write_oob ++ * without data is valid usage (2.6.17). ++ * ++ * Any underlying MTD error results in YAFFS_FAIL. ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, ++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ ++ /* we assume that PackedTags1 and yaffs_Tags are compatible */ ++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); ++ compile_time_assertion(sizeof(yaffs_Tags) == 8); ++ ++ yaffs_PackTags1(&pt1, etags); ++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1); ++ ++ /* When deleting a chunk, the upper layer provides only skeletal ++ * etags, one with chunkDeleted set. However, we need to update the ++ * tags, not erase them completely. So we use the NAND write property ++ * that only zeroed-bits stick and set tag bytes to all-ones and ++ * zero just the (not) deleted bit. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* clear delete status bit to indicate deleted */ ++ pt1.deleted = 0; ++ } ++#else ++ ((__u8 *)&pt1)[8] = 0xff; ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* zero pageStatus byte to indicate deleted */ ++ ((__u8 *)&pt1)[8] = 0; ++ } ++#endif ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = (__u8 *)data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++ retval = mtd->write_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "write_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ return retval ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Return with empty ExtendedTags but add eccResult. ++ */ ++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) ++{ ++ if (etags) { ++ memset(etags, 0, sizeof(*etags)); ++ etags->eccResult = eccResult; ++ } ++ return retval; ++} ++ ++/* Read a chunk (page) from NAND. ++ * ++ * Caller expects ExtendedTags data to be usable even on error; that is, ++ * all members except eccResult and blockBad are zeroed. ++ * ++ * - Check ECC results for data (if applicable) ++ * - Check for blank/erased block (return empty ExtendedTags if blank) ++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible) ++ * - Convert PackedTags1 to ExtendedTags ++ * - Update eccResult and blockBad members to refect state. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, ++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ int eccres = YAFFS_ECC_RESULT_NO_ERROR; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ int deleted; ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) ++ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; ++ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. ++ */ ++ ops.len = (ops.datbuf) ? ops.len : ops.ooblen; ++#endif ++ /* Read page and oob using MTD. ++ * Check status and determine ECC result. ++ */ ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "read_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ ++ switch (retval) { ++ case 0: ++ /* no error */ ++ break; ++ ++ case -EUCLEAN: ++ /* MTD's ECC fixed the data */ ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ dev->eccFixed++; ++ break; ++ ++ case -EBADMSG: ++ /* MTD's ECC could not fix the data */ ++ dev->eccUnfixed++; ++ /* fall into... */ ++ default: ++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); ++ etags->blockBad = (mtd->block_isbad)(mtd, addr); ++ return YAFFS_FAIL; ++ } ++ ++ /* Check for a blank/erased chunk. ++ */ ++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) { ++ /* when blank, upper layers want eccResult to be <= NO_ERROR */ ++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); ++ } + ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ /* Read deleted status (bit) then return it to it's non-deleted ++ * state before performing tags mini-ECC check. pt1.deleted is ++ * inverted. ++ */ ++ deleted = !pt1.deleted; ++ pt1.deleted = 1; ++#else ++ (void) deleted; /* not used */ ++#endif ++ ++ /* Check the packed tags mini-ECC and correct if necessary/possible. ++ */ ++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); ++ switch (retval) { ++ case 0: ++ /* no tags error, use MTD result */ ++ break; ++ case 1: ++ /* recovered tags-ECC error */ ++ dev->tagsEccFixed++; ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ break; ++ default: ++ /* unrecovered tags-ECC error */ ++ dev->tagsEccUnfixed++; ++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); ++ } ++ ++ /* Unpack the tags to extended form and set ECC result. ++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] ++ */ ++ pt1.shouldBeFF = 0xFFFFFFFF; ++ yaffs_UnpackTags1(etags, &pt1); ++ etags->eccResult = eccres; ++ ++ /* Set deleted state. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ etags->chunkDeleted = deleted; ++#else ++ etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif2.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif2.c 2007-05-26 21:13:40.733658208 +0200 -@@ -0,0 +1,234 @@ ++ return YAFFS_OK; ++} ++ ++/* Mark a block bad. ++ * ++ * This is a persistant state. ++ * Use of this function should be rare. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; ++ int retval; ++ ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); ++ ++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); ++ return (retval) ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Check any MTD prerequists. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++static int nandmtd1_TestPrerequists(struct mtd_info * mtd) ++{ ++ /* 2.6.18 has mtd->ecclayout->oobavail */ ++ /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ ++ int oobavail = mtd->ecclayout->oobavail; ++ ++ if (oobavail < YTAG1_SIZE) { ++ yaffs_trace(YAFFS_TRACE_ERROR, ++ "mtd device has only %d bytes for tags, need %d", ++ oobavail, YTAG1_SIZE); ++ return YAFFS_FAIL; ++ } ++ return YAFFS_OK; ++} ++ ++/* Query for the current state of a specific block. ++ * ++ * Examine the tags of the first chunk of the block and return the state: ++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad ++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use ++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean ++ * ++ * Always returns YAFFS_OK. ++ */ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * pState, int *pSequenceNumber) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkNo = blockNo * dev->nChunksPerBlock; ++ yaffs_ExtendedTags etags; ++ int state = YAFFS_BLOCK_STATE_DEAD; ++ int seqnum = 0; ++ int retval; ++ ++ /* We don't yet have a good place to test for MTD config prerequists. ++ * Do it here as we are called during the initial scan. ++ */ ++ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { ++ return YAFFS_FAIL; ++ } ++ ++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); ++ if (etags.blockBad) { ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, ++ "block %d is marked bad", blockNo); ++ state = YAFFS_BLOCK_STATE_DEAD; ++ } ++ else if (etags.chunkUsed) { ++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ seqnum = etags.sequenceNumber; ++ } ++ else { ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ } ++ ++ *pState = state; ++ *pSequenceNumber = seqnum; ++ ++ /* query always succeeds */ ++ return YAFFS_OK; ++} ++ ++#endif /*KERNEL_VERSION*/ ++ ++--Boundary-00=_5LbTGmt62YoutxM-- ++ ++ ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.c 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,339 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.c NAND mtd wrapper functions. ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. + * + * Copyright (C) 2002 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ++ * This module provides the interface between yaffs_nand.c and the ++ * MTD API. This version is used when the MTD interface supports the ++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, ++ * and we have small-page NAND device. ++ * ++ * These functions are invoked via function pointers in yaffs_nand.c. ++ * This replaces functionality provided by functions in yaffs_mtdif.c ++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are ++ * called in yaffs_mtdif.c when the function pointers are NULL. ++ * We assume the MTD layer is performing ECC (useNANDECC is true). ++ */ ++ ++#include "yportenv.h" ++#include "yaffs_guts.h" ++#include "yaffs_packedtags1.h" ++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC ++ ++#include "linux/kernel.h" ++#include "linux/version.h" ++#include "linux/types.h" ++#include "linux/mtd/mtd.h" ++ ++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ ++/* should really be >= .17, but elsewhere > .17 is used, so be consistent */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ ++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $"; ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++# define YTAG1_SIZE 8 ++#else ++# define YTAG1_SIZE 9 ++#endif ++ ++#if 0 ++/* Use the following nand_ecclayout with MTD when using ++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. ++ * If you have existing Yaffs images and the byte order differs from this, ++ * adjust 'oobfree' to match your existing Yaffs data. ++ * ++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the ++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to ++ * the 9th byte. ++ * ++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 ++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P ++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus ++ * byte and B is the small-page bad-block indicator byte. ++ */ ++static struct nand_ecclayout nand_oob_16 = { ++ .eccbytes = 6, ++ .eccpos = { 8, 9, 10, 13, 14, 15 }, ++ .oobavail = 9, ++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } ++}; ++#endif ++ ++/* Write a chunk (page) of data to NAND. ++ * ++ * Caller always provides ExtendedTags data which are converted to a more ++ * compact (packed) form for storage in NAND. A mini-ECC runs over the ++ * contents of the tags meta-data; used to valid the tags when read. ++ * ++ * - Pack ExtendedTags to PackedTags1 form ++ * - Compute mini-ECC for PackedTags1 ++ * - Write data and packed tags to NAND. ++ * ++ * Note: Due to the use of the PackedTags1 meta-data which does not include ++ * a full sequence number (as found in the larger PackedTags2 form) it is ++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as ++ * discarded and dirty. This is not ideal: newer NAND parts are supposed ++ * to be written just once. When Yaffs performs this operation, this ++ * function is called with a NULL data pointer -- calling MTD write_oob ++ * without data is valid usage (2.6.17). ++ * ++ * Any underlying MTD error results in YAFFS_FAIL. ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, ++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ ++ /* we assume that PackedTags1 and yaffs_Tags are compatible */ ++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); ++ compile_time_assertion(sizeof(yaffs_Tags) == 8); ++ ++ yaffs_PackTags1(&pt1, etags); ++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1); ++ ++ /* When deleting a chunk, the upper layer provides only skeletal ++ * etags, one with chunkDeleted set. However, we need to update the ++ * tags, not erase them completely. So we use the NAND write property ++ * that only zeroed-bits stick and set tag bytes to all-ones and ++ * zero just the (not) deleted bit. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* clear delete status bit to indicate deleted */ ++ pt1.deleted = 0; ++ } ++#else ++ ((__u8 *)&pt1)[8] = 0xff; ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* zero pageStatus byte to indicate deleted */ ++ ((__u8 *)&pt1)[8] = 0; ++ } ++#endif ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = (__u8 *)data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++ retval = mtd->write_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "write_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ return retval ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Return with empty ExtendedTags but add eccResult. ++ */ ++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) ++{ ++ if (etags) { ++ memset(etags, 0, sizeof(*etags)); ++ etags->eccResult = eccResult; ++ } ++ return retval; ++} ++ ++/* Read a chunk (page) from NAND. ++ * ++ * Caller expects ExtendedTags data to be usable even on error; that is, ++ * all members except eccResult and blockBad are zeroed. ++ * ++ * - Check ECC results for data (if applicable) ++ * - Check for blank/erased block (return empty ExtendedTags if blank) ++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible) ++ * - Convert PackedTags1 to ExtendedTags ++ * - Update eccResult and blockBad members to refect state. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, ++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ int eccres = YAFFS_ECC_RESULT_NO_ERROR; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ int deleted; ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++ /* Read page and oob using MTD. ++ * Check status and determine ECC result. ++ */ ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "read_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ ++ switch (retval) { ++ case 0: ++ /* no error */ ++ break; ++ ++ case -EUCLEAN: ++ /* MTD's ECC fixed the data */ ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ dev->eccFixed++; ++ break; ++ ++ case -EBADMSG: ++ /* MTD's ECC could not fix the data */ ++ dev->eccUnfixed++; ++ /* fall into... */ ++ default: ++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); ++ etags->blockBad = (mtd->block_isbad)(mtd, addr); ++ return YAFFS_FAIL; ++ } ++ ++ /* Check for a blank/erased chunk. ++ */ ++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) { ++ /* when blank, upper layers want eccResult to be <= NO_ERROR */ ++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); ++ } ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ /* Read deleted status (bit) then return it to it's non-deleted ++ * state before performing tags mini-ECC check. pt1.deleted is ++ * inverted. ++ */ ++ deleted = !pt1.deleted; ++ pt1.deleted = 1; ++#else ++ (void) deleted; /* not used */ ++#endif ++ ++ /* Check the packed tags mini-ECC and correct if necessary/possible. ++ */ ++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); ++ switch (retval) { ++ case 0: ++ /* no tags error, use MTD result */ ++ break; ++ case 1: ++ /* recovered tags-ECC error */ ++ dev->tagsEccFixed++; ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ break; ++ default: ++ /* unrecovered tags-ECC error */ ++ dev->tagsEccUnfixed++; ++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); ++ } ++ ++ /* Unpack the tags to extended form and set ECC result. ++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] ++ */ ++ pt1.shouldBeFF = 0xFFFFFFFF; ++ yaffs_UnpackTags1(etags, &pt1); ++ etags->eccResult = eccres; ++ ++ /* Set deleted state. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ etags->chunkDeleted = deleted; ++#else ++ etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); ++#endif ++ return YAFFS_OK; ++} ++ ++/* Mark a block bad. ++ * ++ * This is a persistant state. ++ * Use of this function should be rare. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; ++ int retval; ++ ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); ++ ++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); ++ return (retval) ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Query for the current state of a specific block. ++ * ++ * Examine the tags of the first chunk of the block and return the state: ++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad ++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use ++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean ++ * ++ * Always returns YAFFS_OK. ++ */ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * pState, int *pSequenceNumber) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkNo = blockNo * dev->nChunksPerBlock; ++ yaffs_ExtendedTags etags; ++ int state = YAFFS_BLOCK_STATE_DEAD; ++ int seqnum = 0; ++ int retval; ++#if 0 ++ if (mtd->oobavail < YTAG1_SIZE) { ++ yaffs_trace(YAFFS_TRACE_ERROR, ++ "mtd device has only %d bytes for tags, need %d", ++ mtd->oobavail, YTAG1_SIZE); ++ return YAFFS_FAIL; ++ } ++#endif ++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); ++ if (etags.blockBad) { ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, ++ "block %d is marked bad", blockNo); ++ state = YAFFS_BLOCK_STATE_DEAD; ++ } ++ else if (etags.chunkUsed) { ++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ seqnum = etags.sequenceNumber; ++ } ++ else { ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ } ++ ++ *pState = state; ++ *pSequenceNumber = seqnum; ++ ++ /* query always succeeds */ ++ return YAFFS_OK; ++} ++ ++#endif /*KERNEL_VERSION*/ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,28 @@ ++/* ++ * 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 ++ * ++ * 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. ++ */ ++ ++#ifndef __YAFFS_MTDIF1_H__ ++#define __YAFFS_MTDIF1_H__ ++ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_ExtendedTags * tags); ++ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * data, yaffs_ExtendedTags * tags); ++ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); ++ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,232 @@ ++/* ++ * 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 General Public License version 2 as + * published by the Free Software Foundation. -+ * + */ + +/* mtd interface for YAFFS2 */ + +const char *yaffs_mtdif2_c_version = -+ "$Id: yaffs_mtdif2.c,v 1.15 2006/11/08 06:24:34 charles Exp $"; ++ "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $"; + +#include "yportenv.h" + @@ -11252,23 +13345,23 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.c linux-2.6.21.1.dev/fs/yaff + return YAFFS_FAIL; +} + -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif2.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif2.h 2007-05-26 21:13:40.733658208 +0200 +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.h 2007-05-30 13:17:17.000000000 +0200 @@ -0,0 +1,29 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.c NAND mtd wrapper functions. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as ++ * 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. + */ + +#ifndef __YAFFS_MTDIF2_H__ @@ -11285,15 +13378,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif2.h linux-2.6.21.1.dev/fs/yaff + yaffs_BlockState * state, int *sequenceNumber); + +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif.c 2007-05-26 21:13:40.733658208 +0200 -@@ -0,0 +1,243 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nand.c linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_nand.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,134 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.c NAND mtd wrapper functions. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -11301,292 +13393,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif.c linux-2.6.21.1.dev/fs/yaffs + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. -+ * -+ */ -+ -+const char *yaffs_mtdif_c_version = -+ "$Id: yaffs_mtdif.c,v 1.17 2006/11/29 20:21:12 charles Exp $"; -+ -+#include "yportenv.h" -+ -+ -+#include "yaffs_mtdif.h" -+ -+#include "linux/mtd/mtd.h" -+#include "linux/types.h" -+#include "linux/time.h" -+#include "linux/mtd/nand.h" -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) -+static struct nand_oobinfo yaffs_oobinfo = { -+ .useecc = 1, -+ .eccbytes = 6, -+ .eccpos = {8, 9, 10, 13, 14, 15} -+}; -+ -+static struct nand_oobinfo yaffs_noeccinfo = { -+ .useecc = 0, -+}; -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) -+{ -+ oob[0] = spare->tagByte0; -+ oob[1] = spare->tagByte1; -+ oob[2] = spare->tagByte2; -+ oob[3] = spare->tagByte3; -+ oob[4] = spare->tagByte4; -+ oob[5] = spare->tagByte5 & 0x3f; -+ oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80; -+ oob[5] |= spare->pageStatus == 0 ? 0: 0x40; -+ oob[6] = spare->tagByte6; -+ oob[7] = spare->tagByte7; -+} -+ -+static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) -+{ -+ struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; -+ spare->tagByte0 = oob[0]; -+ spare->tagByte1 = oob[1]; -+ spare->tagByte2 = oob[2]; -+ spare->tagByte3 = oob[3]; -+ spare->tagByte4 = oob[4]; -+ spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; -+ spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; -+ spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; -+ spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; -+ spare->tagByte6 = oob[6]; -+ spare->tagByte7 = oob[7]; -+ spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; -+ -+ nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ -+} -+#endif -+ -+int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, -+ const __u8 * data, const yaffs_Spare * spare) -+{ -+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ struct mtd_oob_ops ops; -+#endif -+ size_t dummy; -+ int retval = 0; -+ -+ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ __u8 spareAsBytes[8]; /* OOB */ -+ -+ if (data && !spare) -+ retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data); -+ else if (spare) { -+ if (dev->useNANDECC) { -+ translate_spare2oob(spare, spareAsBytes); -+ ops.mode = MTD_OOB_AUTO; -+ ops.ooblen = 8; /* temp hack */ -+ } else { -+ ops.mode = MTD_OOB_RAW; -+ ops.ooblen = YAFFS_BYTES_PER_SPARE; -+ } -+ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -+ ops.datbuf = (u8 *)data; -+ ops.ooboffs = 0; -+ ops.oobbuf = spareAsBytes; -+ retval = mtd->write_oob(mtd, addr, &ops); -+ } -+#else -+ __u8 *spareAsBytes = (__u8 *) spare; -+ -+ if (data && spare) { -+ if (dev->useNANDECC) -+ retval = -+ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data, spareAsBytes, -+ &yaffs_oobinfo); -+ else -+ retval = -+ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data, spareAsBytes, -+ &yaffs_noeccinfo); -+ } else { -+ if (data) -+ retval = -+ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, -+ data); -+ if (spare) -+ retval = -+ mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -+ &dummy, spareAsBytes); -+ } -+#endif -+ -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; -+} -+ -+int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, -+ yaffs_Spare * spare) -+{ -+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ struct mtd_oob_ops ops; -+#endif -+ size_t dummy; -+ int retval = 0; -+ -+ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -+ __u8 spareAsBytes[8]; /* OOB */ -+ -+ if (data && !spare) -+ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data); -+ else if (spare) { -+ if (dev->useNANDECC) { -+ ops.mode = MTD_OOB_AUTO; -+ ops.ooblen = 8; /* temp hack */ -+ } else { -+ ops.mode = MTD_OOB_RAW; -+ ops.ooblen = YAFFS_BYTES_PER_SPARE; -+ } -+ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -+ ops.datbuf = data; -+ ops.ooboffs = 0; -+ ops.oobbuf = spareAsBytes; -+ retval = mtd->read_oob(mtd, addr, &ops); -+ if (dev->useNANDECC) -+ translate_oob2spare(spare, spareAsBytes); -+ } -+#else -+ __u8 *spareAsBytes = (__u8 *) spare; -+ -+ if (data && spare) { -+ if (dev->useNANDECC) { -+ /* Careful, this call adds 2 ints */ -+ /* to the end of the spare data. Calling function */ -+ /* should allocate enough memory for spare, */ -+ /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ -+ retval = -+ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data, spareAsBytes, -+ &yaffs_oobinfo); -+ } else { -+ retval = -+ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ &dummy, data, spareAsBytes, -+ &yaffs_noeccinfo); -+ } -+ } else { -+ if (data) -+ retval = -+ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, -+ data); -+ if (spare) -+ retval = -+ mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -+ &dummy, spareAsBytes); -+ } -+#endif -+ -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; -+} -+ -+int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber) -+{ -+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ __u32 addr = -+ ((loff_t) blockNumber) * dev->nDataBytesPerChunk -+ * dev->nChunksPerBlock; -+ struct erase_info ei; -+ int retval = 0; -+ -+ ei.mtd = mtd; -+ ei.addr = addr; -+ ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; -+ ei.time = 1000; -+ ei.retries = 2; -+ ei.callback = NULL; -+ ei.priv = (u_long) dev; -+ -+ /* Todo finish off the ei if required */ -+ -+ sema_init(&dev->sem, 0); -+ -+ retval = mtd->erase(mtd, &ei); -+ -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; -+} -+ -+int nandmtd_InitialiseNAND(yaffs_Device * dev) -+{ -+ return YAFFS_OK; -+} -+ -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_mtdif.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_mtdif.h 2007-05-26 21:13:40.733658208 +0200 -@@ -0,0 +1,31 @@ -+/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.h NAND mtd interface wrappers -+ * -+ * Copyright (C) 2002 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. -+ * -+ * $Id: yaffs_mtdif.h,v 1.3 2005/08/11 01:07:43 marty Exp $ -+ */ -+ -+#ifndef __YAFFS_MTDIF_H__ -+#define __YAFFS_MTDIF_H__ -+ -+#include "yaffs_guts.h" -+ -+int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, -+ const __u8 * data, const yaffs_Spare * spare); -+int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, -+ yaffs_Spare * spare); -+int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber); -+int nandmtd_InitialiseNAND(yaffs_Device * dev); -+#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_nand.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_nand.c 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,135 @@ -+/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002 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 General Public License version 2 as -+ * published by the Free Software Foundation. -+ * + */ + +const char *yaffs_nand_c_version = -+ "$Id: yaffs_nand.c,v 1.5 2006/11/08 09:52:12 charles Exp $"; ++ "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $"; + +#include "yaffs_nand.h" +#include "yaffs_tagscompat.h" @@ -11706,14 +13516,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.c linux-2.6.21.1.dev/fs/yaffs2 + + + -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nandemul2k.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_nandemul2k.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_nandemul2k.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_nandemul2k.h 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,42 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nand.h linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_nand.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,44 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -11722,14 +13532,59 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nandemul2k.h linux-2.6.21.1.dev/fs/ + * 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. ++ */ ++ ++#ifndef __YAFFS_NAND_H__ ++#define __YAFFS_NAND_H__ ++#include "yaffs_guts.h" ++ ++ ++ ++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * buffer, ++ yaffs_ExtendedTags * tags); ++ ++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * buffer, ++ yaffs_ExtendedTags * tags); ++ ++int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo); ++ ++int yaffs_QueryInitialBlockState(yaffs_Device * dev, ++ int blockNo, ++ yaffs_BlockState * state, ++ unsigned *sequenceNumber); ++ ++int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, ++ int blockInNAND); ++ ++int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); ++ ++#endif ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nandemul2k.h linux-2.6.21.1.new/fs/yaffs2/yaffs_nandemul2k.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_nandemul2k.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nandemul2k.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,39 @@ ++/* ++ * 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> + * -+ * yaffs_nandemul2k.h: Interface to emulated NAND functions (2k page size) ++ * 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. + * -+ * $Id: yaffs_nandemul2k.h,v 1.2 2005/08/11 02:37:49 marty Exp $ ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + ++/* Interface to emulated NAND functions (2k page size) */ ++ +#ifndef __YAFFS_NANDEMUL2K_H__ +#define __YAFFS_NANDEMUL2K_H__ + @@ -11752,14 +13607,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nandemul2k.h linux-2.6.21.1.dev/fs/ +int nandemul2k_GetNumberOfBlocks(void); + +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_nand.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_nand.h 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,43 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.c linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,52 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -11767,42 +13622,8 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_nand.h linux-2.6.21.1.dev/fs/yaffs2 + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. -+ * + */ + -+#ifndef __YAFFS_NAND_H__ -+#define __YAFFS_NAND_H__ -+#include "yaffs_guts.h" -+ -+ -+ -+int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, -+ __u8 * buffer, -+ yaffs_ExtendedTags * tags); -+ -+int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev, -+ int chunkInNAND, -+ const __u8 * buffer, -+ yaffs_ExtendedTags * tags); -+ -+int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo); -+ -+int yaffs_QueryInitialBlockState(yaffs_Device * dev, -+ int blockNo, -+ yaffs_BlockState * state, -+ unsigned *sequenceNumber); -+ -+int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -+ int blockInNAND); -+ -+int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); -+ -+#endif -+ -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags1.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags1.c 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,39 @@ +#include "yaffs_packedtags1.h" +#include "yportenv.h" + @@ -11842,11 +13663,26 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.c linux-2.6.21.1.dev/fs + + } +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags1.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags1.h 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,22 @@ -+// This is used to pack YAFFS1 tags, not YAFFS2 tags. +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.h linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,37 @@ ++/* ++ * 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 is used to pack YAFFS1 tags, not YAFFS2 tags. */ + +#ifndef __YAFFS_PACKEDTAGS1_H__ +#define __YAFFS_PACKEDTAGS1_H__ @@ -11868,23 +13704,21 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags1.h linux-2.6.21.1.dev/fs +void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t); +void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt); +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags2.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags2.c 2007-05-26 21:13:40.734658056 +0200 -@@ -0,0 +1,184 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.c linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,182 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * yaffs_packedtags2.c: Tags packing for YAFFS2 -+ * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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. ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. + */ + +#include "yaffs_packedtags2.h" @@ -12056,10 +13890,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.c linux-2.6.21.1.dev/fs + yaffs_DumpTags2(t); + +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags2.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_packedtags2.h 2007-05-26 21:13:40.735657904 +0200 -@@ -0,0 +1,23 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.h linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,38 @@ ++/* ++ * 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 is used to pack YAFFS2 tags, not YAFFS1tags. */ + +#ifndef __YAFFS_PACKEDTAGS2_H__ @@ -12083,10 +13932,10 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_packedtags2.h linux-2.6.21.1.dev/fs +void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t); +void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt); +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_qsort.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_qsort.c 2007-05-26 21:13:40.735657904 +0200 -@@ -0,0 +1,156 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_qsort.c linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_qsort.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,160 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. @@ -12163,9 +14012,13 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.c linux-2.6.21.1.dev/fs/yaffs + :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c )); +} + ++#ifndef min +#define min(a,b) (((a) < (b)) ? (a) : (b)) ++#endif ++ +void -+qsort(void *aa, size_t n, size_t es, int (*cmp)(const void *, const void *)) ++yaffs_qsort(void *aa, size_t n, size_t es, ++ int (*cmp)(const void *, const void *)) +{ + char *pa, *pb, *pc, *pd, *pl, *pm, *pn; + int d, r, swaptype, swap_cnt; @@ -12234,24 +14087,23 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.c linux-2.6.21.1.dev/fs/yaffs + r = min((long)(pd - pc), (long)(pn - pd - es)); + vecswap(pb, pn - r, r); + if ((r = pb - pa) > es) -+ qsort(a, r / es, es, cmp); ++ yaffs_qsort(a, r / es, es, cmp); + if ((r = pd - pc) > es) { + /* Iterate rather than recurse to save stack space */ + a = pn - r; + n = r / es; + goto loop; + } -+/* qsort(pn - r, r / es, es, cmp);*/ ++/* yaffs_qsort(pn - r, r / es, es, cmp);*/ +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_qsort.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_qsort.h 2007-05-26 21:13:40.735657904 +0200 +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_qsort.h linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_qsort.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.h 2007-05-30 13:17:17.000000000 +0200 @@ -0,0 +1,23 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_qsort.h: Interface to BSD-licensed qsort routine. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -12260,33 +14112,32 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_qsort.h linux-2.6.21.1.dev/fs/yaffs + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_qsort.h,v 1.2 2006/11/07 23:20:09 charles Exp $ ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + ++ +#ifndef __YAFFS_QSORT_H__ +#define __YAFFS_QSORT_H__ + -+extern void qsort (void *const base, size_t total_elems, size_t size, ++extern void yaffs_qsort (void *const base, size_t total_elems, size_t size, + int (*cmp)(const void *, const void *)); + +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagscompat.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagscompat.c 2007-05-26 21:13:40.736657752 +0200 -@@ -0,0 +1,532 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.c linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,530 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_tagscompat.h: Tags compatability layer to use YAFFS1 formatted NAND. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as + * published by the Free Software Foundation. -+ * -+ * $Id: yaffs_tagscompat.c,v 1.8 2005/11/29 20:54:32 marty Exp $ + */ + +#include "yaffs_guts.h" @@ -12323,7 +14174,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.c linux-2.6.21.1.dev/fs/ + 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 +}; + -+static int yaffs_CountBits(__u8 x) ++int yaffs_CountBits(__u8 x) +{ + int retVal; + retVal = yaffs_countBitsTable[x]; @@ -12806,29 +14657,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.c linux-2.6.21.1.dev/fs/ + + return YAFFS_OK; +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagscompat.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagscompat.h 2007-05-26 21:13:40.736657752 +0200 +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.h linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.h 2007-05-30 13:17:17.000000000 +0200 @@ -0,0 +1,40 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_ramdisk.h: yaffs ram disk component ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as ++ * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagscompat.h,v 1.2 2005/08/11 02:33:03 marty Exp $ ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + -+/* This provides a ram disk under yaffs. -+ * NB this is not intended for NAND emulation. -+ * Use this with dev->useNANDECC enabled, then ECC overheads are not required. -+ */ +#ifndef __YAFFS_TAGSCOMPAT_H__ +#define __YAFFS_TAGSCOMPAT_H__ + @@ -12849,16 +14696,19 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagscompat.h linux-2.6.21.1.dev/fs/ + int blockNo, yaffs_BlockState * + state, int *sequenceNumber); + -+#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.c linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagsvalidity.c ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagsvalidity.c 2007-05-26 21:13:40.736657752 +0200 -@@ -0,0 +1,31 @@ ++void yaffs_CalcTagsECC(yaffs_Tags * tags); ++int yaffs_CheckECCOnTags(yaffs_Tags * tags); ++int yaffs_CountBits(__u8 byte); + ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.c linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.c 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,28 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -12866,8 +14716,6 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.c linux-2.6.21.1.dev/f + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. -+ * -+ * $Id: yaffs_tagsvalidity.c,v 1.2 2005/08/11 02:33:03 marty Exp $ + */ + +#include "yaffs_tagsvalidity.h" @@ -12885,26 +14733,25 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.c linux-2.6.21.1.dev/f + tags->validMarker1 == 0x55555555); + +} -diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.h linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagsvalidity.h ---- linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yaffs_tagsvalidity.h 2007-05-26 21:13:40.736657752 +0200 -@@ -0,0 +1,25 @@ -+ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.h linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,24 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * 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 General Public License version 2 as ++ * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagsvalidity.h,v 1.2 2005/08/11 02:33:03 marty Exp $ ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ -+//yaffs_tagsvalidity.h ++ + +#ifndef __YAFFS_TAGS_VALIDITY_H__ +#define __YAFFS_TAGS_VALIDITY_H__ @@ -12914,16 +14761,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yaffs_tagsvalidity.h linux-2.6.21.1.dev/f +void yaffs_InitialiseTags(yaffs_ExtendedTags * tags); +int yaffs_ValidateTags(yaffs_ExtendedTags * tags); +#endif -diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/yportenv.h ---- linux-2.6.21.1.old/fs/yaffs2/yportenv.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.21.1.dev/fs/yaffs2/yportenv.h 2007-05-26 21:13:40.736657752 +0200 -@@ -0,0 +1,165 @@ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffsinterface.h linux-2.6.21.1.new/fs/yaffs2/yaffsinterface.h +--- linux-2.6.21.1/fs/yaffs2/yaffsinterface.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffsinterface.h 2007-05-30 13:17:16.000000000 +0200 +@@ -0,0 +1,21 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yportenv.h: Portable services used by yaffs. This is done to allow -+ * simple migration from kernel space into app space for testing. ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * Copyright (C) 2002 Aleph One Ltd. ++ * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> @@ -12932,13 +14777,35 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y + * 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. ++ */ ++ ++#ifndef __YAFFSINTERFACE_H__ ++#define __YAFFSINTERFACE_H__ ++ ++int yaffs_Initialise(unsigned nBlocks); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yportenv.h linux-2.6.21.1.new/fs/yaffs2/yportenv.h +--- linux-2.6.21.1/fs/yaffs2/yportenv.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yportenv.h 2007-05-30 13:17:17.000000000 +0200 +@@ -0,0 +1,186 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * -+ * $Id: yportenv.h,v 1.11 2006/05/21 09:39:12 charles Exp $ ++ * 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. + */ + ++ +#ifndef __YPORTENV_H__ +#define __YPORTENV_H__ + @@ -12951,9 +14818,11 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y +#include "moduleconfig.h" + +/* Linux kernel */ -+#include <linux/autoconf.h> -+#include <linux/kernel.h> +#include <linux/version.h> ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) ++#include <linux/config.h> ++#endif ++#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/string.h> +#include <linux/slab.h> @@ -12964,6 +14833,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y +#define _Y(x) x +#define yaffs_strcpy(a,b) strcpy(a,b) +#define yaffs_strncpy(a,b,c) strncpy(a,b,c) ++#define yaffs_strncmp(a,b,c) strncmp(a,b,c) +#define yaffs_strlen(s) strlen(s) +#define yaffs_sprintf sprintf +#define yaffs_toupper(a) toupper(a) @@ -12983,7 +14853,7 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y +// KR - added for use in scan so processes aren't blocked indefinitely. +#define YYIELD() schedule() + -+#define YAFFS_ROOT_MODE 0666 ++#define YAFFS_ROOT_MODE 0666 +#define YAFFS_LOSTNFOUND_MODE 0666 + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) @@ -13001,6 +14871,14 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y +#define TSTR(x) KERN_WARNING x +#define TOUT(p) printk p + ++#define yaffs_trace(mask, fmt, args...) \ ++ do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ ++ printk(KERN_WARNING "yaffs: " fmt, ## args); \ ++ } while (0) ++ ++#define compile_time_assertion(assertion) \ ++ ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) ++ +#elif defined CONFIG_YAFFS_DIRECT + +/* Direct interface */ @@ -13055,9 +14933,15 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y + +#endif + -+extern unsigned yaffs_traceMask; ++/* see yaffs_fs.c */ ++extern unsigned int yaffs_traceMask; ++extern unsigned int yaffs_wr_attempts; + -+#define YAFFS_TRACE_ERROR 0x00000001 ++/* ++ * Tracing flags. ++ * The flags masked in YAFFS_TRACE_ALWAYS are always traced. ++ */ ++ +#define YAFFS_TRACE_OS 0x00000002 +#define YAFFS_TRACE_ALLOCATE 0x00000004 +#define YAFFS_TRACE_SCAN 0x00000008 @@ -13073,13 +14957,39 @@ diff -urN linux-2.6.21.1.old/fs/yaffs2/yportenv.h linux-2.6.21.1.dev/fs/yaffs2/y +#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 +#define YAFFS_TRACE_MTD 0x00004000 +#define YAFFS_TRACE_CHECKPOINT 0x00008000 -+#define YAFFS_TRACE_ALWAYS 0x40000000 ++ ++#define YAFFS_TRACE_VERIFY 0x00010000 ++#define YAFFS_TRACE_VERIFY_NAND 0x00020000 ++#define YAFFS_TRACE_VERIFY_FULL 0x00040000 ++#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 ++ ++ ++#define YAFFS_TRACE_ERROR 0x40000000 +#define YAFFS_TRACE_BUG 0x80000000 ++#define YAFFS_TRACE_ALWAYS 0xF0000000 + -+#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ERROR)) TOUT(p);} while(0) ++ ++#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0) + +#ifndef CONFIG_YAFFS_WINCE +#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__)) +#endif + +#endif +--- linux-2.6.21.1/fs/Makefile 2007-05-30 13:16:21.000000000 +0200 ++++ linux-2.6.21.1.new/fs/Makefile 2007-05-30 13:27:34.000000000 +0200 +@@ -116,3 +116,4 @@ + obj-$(CONFIG_DEBUG_FS) += debugfs/ + obj-$(CONFIG_OCFS2_FS) += ocfs2/ + obj-$(CONFIG_GFS2_FS) += gfs2/ ++obj-$(CONFIG_YAFFS_FS) += yaffs2/ +--- linux-2.6.21.1/fs/Kconfig 2007-05-30 13:16:21.000000000 +0200 ++++ linux-2.6.21.1.new/fs/Kconfig 2007-05-30 13:29:14.000000000 +0200 +@@ -419,6 +419,7 @@ + + source "fs/xfs/Kconfig" + source "fs/gfs2/Kconfig" ++source "fs/yaffs2/Kconfig" + + config OCFS2_FS + tristate "OCFS2 file system support" |