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0 parents commit 7b670d7a2df4bf106a4217ef38f1c11db731d11a Moxie Marlinspike committed Apr 3, 2011
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  1. +190 −0 Kconfig
  2. +17 −0 Makefile
  3. +101 −0 devextras.h
  4. +86 −0 moduleconfig.h
  5. +409 −0 yaffs_allocator.c
  6. +30 −0 yaffs_allocator.h
  7. +105 −0 yaffs_bitmap.c
  8. +31 −0 yaffs_bitmap.h
  9. +401 −0 yaffs_checkptrw.c
  10. +34 −0 yaffs_checkptrw.h
  11. +307 −0 yaffs_crypto.c
  12. +60 −0 yaffs_crypto.h
  13. +323 −0 yaffs_ecc.c
  14. +44 −0 yaffs_ecc.h
  15. +35 −0 yaffs_getblockinfo.h
  16. +5,544 −0 yaffs_guts.c
  17. +973 −0 yaffs_guts.h
  18. +43 −0 yaffs_linux.h
  19. +200 −0 yaffs_linux_allocator.c
  20. +127 −0 yaffs_list.h
  21. +56 −0 yaffs_mtdif.c
  22. +27 −0 yaffs_mtdif.h
  23. +361 −0 yaffs_mtdif1.c
  24. +28 −0 yaffs_mtdif1.h
  25. +314 −0 yaffs_mtdif2.c
  26. +29 −0 yaffs_mtdif2.h
  27. +197 −0 yaffs_nameval.c
  28. +25 −0 yaffs_nameval.h
  29. +140 −0 yaffs_nand.c
  30. +44 −0 yaffs_nand.h
  31. +39 −0 yaffs_nandemul2k.h
  32. +50 −0 yaffs_packedtags1.c
  33. +37 −0 yaffs_packedtags1.h
  34. +198 −0 yaffs_packedtags2.c
  35. +45 −0 yaffs_packedtags2.h
  36. +110 −0 yaffs_pbkdf2.c
  37. +4 −0 yaffs_pbkdf2.h
  38. +163 −0 yaffs_qsort.c
  39. +34 −0 yaffs_qsort.h
  40. +539 −0 yaffs_tagscompat.c
  41. +39 −0 yaffs_tagscompat.h
  42. +28 −0 yaffs_tagsvalidity.c
  43. +24 −0 yaffs_tagsvalidity.h
  44. +60 −0 yaffs_trace.h
  45. +626 −0 yaffs_verify.c
  46. +39 −0 yaffs_verify.h
  47. +3,872 −0 yaffs_vfs_glue.c
  48. +465 −0 yaffs_yaffs1.c
  49. +22 −0 yaffs_yaffs1.h
  50. +1,540 −0 yaffs_yaffs2.c
  51. +36 −0 yaffs_yaffs2.h
  52. +21 −0 yaffsinterface.h
  53. +333 −0 yportenv.h
190 Kconfig
@@ -0,0 +1,190 @@
+#
+# YAFFS file system configurations
+#
+
+config YAFFS_FS
+ tristate "YAFFS2 file system support"
+ default n
+ depends on MTD_BLOCK
+ 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
+ in yaffs_mtdif1.c.
+
+ 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_TAGS_ECC
+ bool "Disable YAFFS from doing ECC on tags by default"
+ depends on YAFFS_FS && YAFFS_YAFFS2
+ default n
+ help
+ This defaults Yaffs to using its own ECC calculations on tags instead of
+ just relying on the MTD.
+ This behavior can also be overridden with tags_ecc_on and
+ tags_ecc_off mount options.
+
+ 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 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.
+
+config YAFFS_EMPTY_LOST_AND_FOUND
+ bool "Empty lost and found on boot"
+ depends on YAFFS_FS
+ default n
+ help
+ If this is enabled then the contents of lost and found is
+ automatically dumped at mount.
+
+ If unsure, say N.
+
+config YAFFS_DISABLE_BLOCK_REFRESHING
+ bool "Disable yaffs2 block refreshing"
+ depends on YAFFS_FS
+ default n
+ help
+ If this is set, then block refreshing is disabled.
+ Block refreshing infrequently refreshes the oldest block in
+ a yaffs2 file system. This mechanism helps to refresh flash to
+ mitigate against data loss. This is particularly useful for MLC.
+
+ If unsure, say N.
+
+config YAFFS_DISABLE_BACKGROUND
+ bool "Disable yaffs2 background processing"
+ depends on YAFFS_FS
+ default n
+ help
+ If this is set, then background processing is disabled.
+ Background processing makes many foreground activities faster.
+
+ If unsure, say N.
+
+config YAFFS_XATTR
+ bool "Enable yaffs2 xattr support"
+ depends on YAFFS_FS
+ default y
+ help
+ If this is set then yaffs2 will provide xattr support.
+ If unsure, say Y.
+
+
@@ -0,0 +1,17 @@
+#
+# Makefile for the linux YAFFS filesystem routines.
+#
+
+obj-$(CONFIG_YAFFS_FS) += yaffs.o
+
+yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o yaffs_crypto.o yaffs_pbkdf2.o
+yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
+yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
+yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
+yaffs-y += yaffs_nameval.o
+yaffs-y += yaffs_allocator.o
+yaffs-y += yaffs_yaffs1.o
+yaffs-y += yaffs_yaffs2.o
+yaffs-y += yaffs_bitmap.o
+yaffs-y += yaffs_verify.o
+
@@ -0,0 +1,101 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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 file is just holds extra declarations of macros that would normally
+ * be providesd in the Linux kernel. These macros have been written from
+ * scratch but are functionally equivalent to the Linux ones.
+ *
+ */
+
+#ifndef __EXTRAS_H__
+#define __EXTRAS_H__
+
+
+#include "yportenv.h"
+
+#if !(defined __KERNEL__)
+
+/* Definition of types */
+typedef unsigned char __u8;
+typedef unsigned short __u16;
+typedef unsigned __u32;
+
+#endif
+
+
+#if !(defined __KERNEL__)
+
+
+#ifndef WIN32
+#include <sys/stat.h>
+#endif
+
+
+#ifdef CONFIG_YAFFS_PROVIDE_DEFS
+/* File types */
+
+
+#define DT_UNKNOWN 0
+#define DT_FIFO 1
+#define DT_CHR 2
+#define DT_DIR 4
+#define DT_BLK 6
+#define DT_REG 8
+#define DT_LNK 10
+#define DT_SOCK 12
+#define DT_WHT 14
+
+
+#ifndef WIN32
+#include <sys/stat.h>
+#endif
+
+/*
+ * Attribute flags. These should be or-ed together to figure out what
+ * has been changed!
+ */
+#define ATTR_MODE 1
+#define ATTR_UID 2
+#define ATTR_GID 4
+#define ATTR_SIZE 8
+#define ATTR_ATIME 16
+#define ATTR_MTIME 32
+#define ATTR_CTIME 64
+
+struct iattr {
+ unsigned int ia_valid;
+ unsigned ia_mode;
+ unsigned ia_uid;
+ unsigned ia_gid;
+ unsigned ia_size;
+ unsigned ia_atime;
+ unsigned ia_mtime;
+ unsigned ia_ctime;
+ unsigned int ia_attr_flags;
+};
+
+#endif
+
+#else
+
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/stat.h>
+
+#endif
+
+
+#endif
@@ -0,0 +1,86 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2010 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.
+ */
+
+#ifndef __YAFFS_CONFIG_H__
+#define __YAFFS_CONFIG_H__
+
+#ifdef YAFFS_OUT_OF_TREE
+
+/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */
+#define CONFIG_YAFFS_FS
+#define CONFIG_YAFFS_YAFFS1
+#define CONFIG_YAFFS_YAFFS2
+
+/* These options are independent of each other. Select those that matter. */
+
+/* Default: Not selected */
+/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
+/* #define CONFIG_YAFFS_DOES_ECC */
+
+/* Default: Selected */
+/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */
+#define CONFIG_YAFFS_DOES_TAGS_ECC
+
+/* Default: Not selected */
+/* Meaning: ECC byte order is 'wrong'. Only meaningful if */
+/* CONFIG_YAFFS_DOES_ECC is set */
+/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
+
+/* Default: Not selected */
+/* Meaning: Always test whether chunks are erased before writing to them.
+ Use during mtd debugging and init. */
+/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */
+
+/* Default: Not Selected */
+/* Meaning: At mount automatically empty all files from lost and found. */
+/* This is done to fix an old problem where rmdir was not checking for an */
+/* empty directory. This can also be achieved with a mount option. */
+#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
+
+/* Default: Selected */
+/* Meaning: Cache short names, taking more RAM, but faster look-ups */
+#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+
+/* Default: Unselected */
+/* Meaning: Select to disable block refreshing. */
+/* Block Refreshing periodically rewrites the oldest block. */
+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
+
+/* Default: Unselected */
+/* Meaning: Select to disable background processing */
+/* #define CONFIG_DISABLE_BACKGROUND */
+
+
+/* Default: Selected */
+/* Meaning: Enable XATTR support */
+#define CONFIG_YAFFS_XATTR
+
+/*
+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 in yaffs_mtdif1.c.
+*/
+/* 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__ */
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