endif
LIBS += lib_$(ARCH)/lib$(ARCH).a
LIBS += fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a \
- fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a fs/yaffs2/direct/libyaffs2.a
+ fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a fs/yaffs2/libyaffs2.a
LIBS += net/libnet.a
LIBS += disk/libdisk.a
LIBS += drivers/bios_emulator/libatibiosemu.a
TAG_SUBDIRS += fs/fat
TAG_SUBDIRS += fs/fdos
TAG_SUBDIRS += fs/jffs2
-TAG_SUBDIRS += fs/yaffs2/direct
+TAG_SUBDIRS += fs/yaffs2
TAG_SUBDIRS += net
TAG_SUBDIRS += disk
TAG_SUBDIRS += common
#
#
-SUBDIRS := jffs2 cramfs fdos fat reiserfs ext2 yaffs2/direct
+SUBDIRS := jffs2 cramfs fdos fat reiserfs ext2 yaffs2
$(obj).depend all:
@for dir in $(SUBDIRS) ; do \
--- /dev/null
+# Makefile for YAFFS direct test
+#
+#
+# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
+#
+# Copyright (C) 2003 Aleph One Ltd.
+#
+#
+# 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.
+#
+# NB Warning this Makefile does not include header dependencies.
+#
+# $Id: Makefile,v 1.15 2007/07/18 19:40:38 charles Exp $
+
+#EXTRA_COMPILE_FLAGS = -DYAFFS_IGNORE_TAGS_ECC
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)libyaffs2.a
+
+COBJS-$(CONFIG_YAFFS2) := \
+ yaffscfg.o yaffs_ecc.o yaffsfs.o yaffs_guts.o yaffs_packedtags1.o \
+ yaffs_tagscompat.o yaffs_packedtags2.o yaffs_tagsvalidity.o \
+ yaffs_nand.o yaffs_checkptrw.o yaffs_qsort.o yaffs_mtdif.o \
+ yaffs_mtdif2.o
+
+SRCS := $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+
+# -DCONFIG_YAFFS_NO_YAFFS1
+CFLAGS += -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -DNO_Y_INLINE -DLINUX_VERSION_CODE=0x20622
+
+all: $(LIB)
+
+$(LIB): $(obj).depend $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+.PHONY: clean distclean
+clean:
+ rm -f $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
+
+++ /dev/null
-# Makefile for YAFFS direct test
-#
-#
-# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
-#
-# Copyright (C) 2003 Aleph One Ltd.
-#
-#
-# 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.
-#
-# NB Warning this Makefile does not include header dependencies.
-#
-# $Id: Makefile,v 1.15 2007/07/18 19:40:38 charles Exp $
-
-#EXTRA_COMPILE_FLAGS = -DYAFFS_IGNORE_TAGS_ECC
-include $(TOPDIR)/config.mk
-
-LIB = $(obj)libyaffs2.a
-
-COBJS-$(CONFIG_YAFFS2) := \
- yaffscfg.o yaffs_ecc.o yaffsfs.o yaffs_guts.o yaffs_packedtags1.o \
- yaffs_tagscompat.o yaffs_packedtags2.o yaffs_tagsvalidity.o \
- yaffs_nand.o yaffs_checkptrw.o yaffs_qsort.o yaffs_mtdif.o \
- yaffs_mtdif2.o
-
-SRCS := $(COBJS-y:.o=.c)
-OBJS := $(addprefix $(obj),$(COBJS-y))
-
-SYMLINKS = devextras.h yaffs_ecc.c yaffs_ecc.h yaffs_guts.c yaffs_guts.h yaffsinterface.h yportenv.h yaffs_tagscompat.c yaffs_tagscompat.h \
- yaffs_packedtags1.c yaffs_packedtags1.h yaffs_packedtags2.c yaffs_packedtags2.h yaffs_nandemul2k.h \
- yaffs_nand.c yaffs_nand.h yaffs_mtdif.c yaffs_mtdif.h \
- yaffs_tagsvalidity.c yaffs_tagsvalidity.h yaffs_checkptrw.h yaffs_checkptrw.c \
- yaffs_qsort.c yaffs_qsort.h yaffs_mtdif2.c yaffs_mtdif2.h
-
-# -DCONFIG_YAFFS_NO_YAFFS1
-CFLAGS += -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -DNO_Y_INLINE -DLINUX_VERSION_CODE=0x20616
-
-all: $(LIB)
-
-$(LIB): $(obj).depend $(OBJS)
- $(AR) $(ARFLAGS) $@ $(OBJS)
-
-.PHONY: clean distclean
-clean:
- rm -f $(OBJS)
-
-distclean: clean
- rm -f $(LIB) core *.bak .depend
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
-
+++ /dev/null
-../devextras.h
\ No newline at end of file
+++ /dev/null
-../yaffs_checkptrw.c
\ No newline at end of file
+++ /dev/null
-../yaffs_checkptrw.h
\ No newline at end of file
+++ /dev/null
-../yaffs_ecc.c
\ No newline at end of file
+++ /dev/null
-../yaffs_ecc.h
\ No newline at end of file
+++ /dev/null
-/*
- * 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_FLASH_H__
-#define __YAFFS_FLASH_H__
-
-
-#include "yaffs_guts.h"
-int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
-int yflash_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare);
-int yflash_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags);
-int yflash_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare);
-int yflash_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags);
-int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
-int yflash_InitialiseNAND(yaffs_Device *dev);
-int yflash_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
-int yflash_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber);
-
-#endif
+++ /dev/null
-../yaffs_guts.c
\ No newline at end of file
+++ /dev/null
-../yaffs_guts.h
\ No newline at end of file
+++ /dev/null
-#ifndef __YAFFS_MALLOC_H__
-/*
- * 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.
- */
-
-/* XXX U-BOOT XXX */
-#if 0
-#include <stdlib.h>
-#endif
-
-void *yaffs_malloc(size_t size);
-void yaffs_free(void *ptr);
-
-#endif
-
+++ /dev/null
-../yaffs_mtdif.c
\ No newline at end of file
+++ /dev/null
-../yaffs_mtdif.h
\ No newline at end of file
+++ /dev/null
-../yaffs_mtdif2.c
\ No newline at end of file
+++ /dev/null
-../yaffs_mtdif2.h
\ No newline at end of file
+++ /dev/null
-../yaffs_nand.c
\ No newline at end of file
+++ /dev/null
-../yaffs_nand.h
\ No newline at end of file
+++ /dev/null
-../yaffs_nandemul2k.h
\ No newline at end of file
+++ /dev/null
-../yaffs_packedtags1.c
\ No newline at end of file
+++ /dev/null
-../yaffs_packedtags1.h
\ No newline at end of file
+++ /dev/null
-../yaffs_packedtags2.c
\ No newline at end of file
+++ /dev/null
-../yaffs_packedtags2.h
\ No newline at end of file
+++ /dev/null
-../yaffs_qsort.c
\ No newline at end of file
+++ /dev/null
-../yaffs_qsort.h
\ No newline at end of file
+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * yaffs_ramdisk.h: yaffs ram disk component
- */
-
-#ifndef __YAFFS_RAMDISK_H__
-#define __YAFFS_RAMDISK_H__
-
-
-#include "yaffs_guts.h"
-int yramdisk_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
-int yramdisk_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags);
-int yramdisk_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags);
-int yramdisk_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
-int yramdisk_InitialiseNAND(yaffs_Device *dev);
-int yramdisk_MarkNANDBlockBad(yaffs_Device *dev,int blockNumber);
-int yramdisk_QueryNANDBlock(yaffs_Device *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber);
-#endif
+++ /dev/null
-../yaffs_tagscompat.c
\ No newline at end of file
+++ /dev/null
-../yaffs_tagscompat.h
\ No newline at end of file
+++ /dev/null
-../yaffs_tagsvalidity.c
\ No newline at end of file
+++ /dev/null
-../yaffs_tagsvalidity.h
\ No newline at end of file
+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * yaffscfg.c The configuration for the "direct" use of yaffs.
- *
- * This file is intended to be modified to your requirements.
- * There is no need to redistribute this file.
- */
-
-/* XXX U-BOOT XXX */
-#include <common.h>
-
-#include <config.h>
-#include "nand.h"
-#include "yaffscfg.h"
-#include "yaffsfs.h"
-#include "yaffs_packedtags2.h"
-#include "yaffs_mtdif.h"
-#include "yaffs_mtdif2.h"
-#if 0
-#include <errno.h>
-#else
-#include "malloc.h"
-#endif
-
-unsigned yaffs_traceMask = 0xFFFFFFFF;
-static int yaffs_errno = 0;
-
-void yaffsfs_SetError(int err)
-{
- //Do whatever to set error
- yaffs_errno = err;
-}
-
-int yaffsfs_GetError(void)
-{
- return yaffs_errno;
-}
-
-void yaffsfs_Lock(void)
-{
-}
-
-void yaffsfs_Unlock(void)
-{
-}
-
-__u32 yaffsfs_CurrentTime(void)
-{
- return 0;
-}
-
-void *yaffs_malloc(size_t size)
-{
- return malloc(size);
-}
-
-void yaffs_free(void *ptr)
-{
- free(ptr);
-}
-
-void yaffsfs_LocalInitialisation(void)
-{
- // Define locking semaphore.
-}
-
-// Configuration for:
-// /ram 2MB ramdisk
-// /boot 2MB boot disk (flash)
-// /flash 14MB flash disk (flash)
-// NB Though /boot and /flash occupy the same physical device they
-// are still disticnt "yaffs_Devices. You may think of these as "partitions"
-// using non-overlapping areas in the same device.
-//
-
-#include "yaffs_ramdisk.h"
-#include "yaffs_flashif.h"
-
-static int isMounted = 0;
-#define MOUNT_POINT "/flash"
-extern nand_info_t nand_info[];
-
-/* XXX U-BOOT XXX */
-#if 0
-static yaffs_Device ramDev;
-static yaffs_Device bootDev;
-static yaffs_Device flashDev;
-#endif
-
-static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
-/* XXX U-BOOT XXX */
-#if 0
- { "/ram", &ramDev},
- { "/boot", &bootDev},
- { "/flash", &flashDev},
-#else
- { MOUNT_POINT, 0},
-#endif
- {(void *)0,(void *)0}
-};
-
-
-int yaffs_StartUp(void)
-{
- struct mtd_info *mtd = &nand_info[0];
- int yaffsVersion = 2;
- int nBlocks;
-
- yaffs_Device *flashDev = calloc(1, sizeof(yaffs_Device));
- yaffsfs_config[0].dev = flashDev;
-
- // Stuff to configure YAFFS
- // Stuff to initialise anything special (eg lock semaphore).
- yaffsfs_LocalInitialisation();
-
- // Set up devices
-
-/* XXX U-BOOT XXX */
-#if 0
- // /ram
- ramDev.nBytesPerChunk = 512;
- ramDev.nChunksPerBlock = 32;
- ramDev.nReservedBlocks = 2; // Set this smaller for RAM
- ramDev.startBlock = 1; // Can't use block 0
- ramDev.endBlock = 127; // Last block in 2MB.
- ramDev.useNANDECC = 1;
- ramDev.nShortOpCaches = 0; // Disable caching on this device.
- ramDev.genericDevice = (void *) 0; // Used to identify the device in fstat.
- ramDev.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND;
- ramDev.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND;
- ramDev.eraseBlockInNAND = yramdisk_EraseBlockInNAND;
- ramDev.initialiseNAND = yramdisk_InitialiseNAND;
-
- // /boot
- bootDev.nBytesPerChunk = 612;
- bootDev.nChunksPerBlock = 32;
- bootDev.nReservedBlocks = 5;
- bootDev.startBlock = 1; // Can't use block 0
- bootDev.endBlock = 127; // Last block in 2MB.
- bootDev.useNANDECC = 0; // use YAFFS's ECC
- bootDev.nShortOpCaches = 10; // Use caches
- bootDev.genericDevice = (void *) 1; // Used to identify the device in fstat.
- bootDev.writeChunkToNAND = yflash_WriteChunkToNAND;
- bootDev.readChunkFromNAND = yflash_ReadChunkFromNAND;
- bootDev.eraseBlockInNAND = yflash_EraseBlockInNAND;
- bootDev.initialiseNAND = yflash_InitialiseNAND;
-#endif
-
- // /flash
- flashDev->nReservedBlocks = 5;
-// flashDev->nShortOpCaches = (options.no_cache) ? 0 : 10;
- flashDev->nShortOpCaches = 10; // Use caches
- flashDev->useNANDECC = 0; // do not use YAFFS's ECC
-
- if (yaffsVersion == 2)
- {
- flashDev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
- flashDev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
- flashDev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
- flashDev->queryNANDBlock = nandmtd2_QueryNANDBlock;
- flashDev->spareBuffer = YMALLOC(mtd->oobsize);
- flashDev->isYaffs2 = 1;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- flashDev->nDataBytesPerChunk = mtd->writesize;
- flashDev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
-#else
- flashDev->nDataBytesPerChunk = mtd->oobblock;
- flashDev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
-#endif
- nBlocks = mtd->size / mtd->erasesize;
-
- flashDev->nCheckpointReservedBlocks = 10;
- flashDev->startBlock = 0;
- flashDev->endBlock = nBlocks - 1;
- }
- else
- {
- flashDev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
- flashDev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
- flashDev->isYaffs2 = 0;
- nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
- flashDev->startBlock = 320;
- flashDev->endBlock = nBlocks - 1;
- flashDev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
- flashDev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
- }
-
- /* ... and common functions */
- flashDev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
- flashDev->initialiseNAND = nandmtd_InitialiseNAND;
-
- yaffs_initialise(yaffsfs_config);
-
- return 0;
-}
-
-
-void make_a_file(char *yaffsName,char bval,int sizeOfFile)
-{
- int outh;
- int i;
- unsigned char buffer[100];
-
- outh = yaffs_open(yaffsName, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
- if (outh < 0)
- {
- printf("Error opening file: %d\n", outh);
- return;
- }
-
- memset(buffer,bval,100);
-
- do{
- i = sizeOfFile;
- if(i > 100) i = 100;
- sizeOfFile -= i;
-
- yaffs_write(outh,buffer,i);
-
- } while (sizeOfFile > 0);
-
-
- yaffs_close(outh);
-}
-
-void read_a_file(char *fn)
-{
- int h;
- int i = 0;
- unsigned char b;
-
- h = yaffs_open(fn, O_RDWR,0);
- if(h<0)
- {
- printf("File not found\n");
- return;
- }
-
- while(yaffs_read(h,&b,1)> 0)
- {
- printf("%02x ",b);
- i++;
- if(i > 32)
- {
- printf("\n");
- i = 0;;
- }
- }
- printf("\n");
- yaffs_close(h);
-}
-
-void cmd_yaffs_mount(char *mp)
-{
- yaffs_StartUp();
- int retval = yaffs_mount(mp);
- if( retval != -1)
- isMounted = 1;
- else
- printf("Error mounting %s, return value: %d\n", mp, yaffsfs_GetError());
-}
-
-static void checkMount(void)
-{
- if( !isMounted )
- {
- cmd_yaffs_mount(MOUNT_POINT);
- }
-}
-
-void cmd_yaffs_umount(char *mp)
-{
- checkMount();
- if( yaffs_unmount(mp) == -1)
- printf("Error umounting %s, return value: %d\n", mp, yaffsfs_GetError());
-}
-
-void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
-{
- checkMount();
- make_a_file(yaffsName,bval,sizeOfFile);
-}
-
-
-void cmd_yaffs_read_file(char *fn)
-{
- checkMount();
- read_a_file(fn);
-}
-
-
-void cmd_yaffs_mread_file(char *fn, char *addr)
-{
- int h;
- struct yaffs_stat s;
-
- checkMount();
-
- yaffs_stat(fn,&s);
-
- printf ("Copy %s to 0x%08x... ", fn, addr);
- h = yaffs_open(fn, O_RDWR,0);
- if(h<0)
- {
- printf("File not found\n");
- return;
- }
-
- yaffs_read(h,addr,(int)s.st_size);
- printf("\t[DONE]\n");
-
- yaffs_close(h);
-}
-
-
-void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
-{
- int outh;
-
- checkMount();
- outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
- if (outh < 0)
- {
- printf("Error opening file: %d\n", outh);
- }
-
- yaffs_write(outh,addr,size);
-
- yaffs_close(outh);
-}
-
-
-void cmd_yaffs_ls(const char *mountpt, int longlist)
-{
- int i;
- yaffs_DIR *d;
- yaffs_dirent *de;
- struct yaffs_stat stat;
- char tempstr[255];
-
- checkMount();
- d = yaffs_opendir(mountpt);
-
- if(!d)
- {
- printf("opendir failed\n");
- }
- else
- {
- for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
- {
- if (longlist)
- {
- sprintf(tempstr, "%s/%s", mountpt, de->d_name);
- yaffs_stat(tempstr, &stat);
- printf("%-25s\t%7d\n",de->d_name, stat.st_size);
- }
- else
- {
- printf("%s\n",de->d_name);
- }
- }
- }
-}
-
-
-void cmd_yaffs_mkdir(const char *dir)
-{
- checkMount();
-
- int retval = yaffs_mkdir(dir, 0);
-
- if ( retval < 0)
- printf("yaffs_mkdir returning error: %d\n", retval);
-}
-
-void cmd_yaffs_rmdir(const char *dir)
-{
- checkMount();
-
- int retval = yaffs_rmdir(dir);
-
- if ( retval < 0)
- printf("yaffs_rmdir returning error: %d\n", retval);
-}
-
-void cmd_yaffs_rm(const char *path)
-{
- checkMount();
-
- int retval = yaffs_unlink(path);
-
- if ( retval < 0)
- printf("yaffs_unlink returning error: %d\n", retval);
-}
-
-void cmd_yaffs_mv(const char *oldPath, const char *newPath)
-{
- checkMount();
-
- int retval = yaffs_rename(newPath, oldPath);
-
- if ( retval < 0)
- printf("yaffs_unlink returning error: %d\n", retval);
-}
+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * Header file for using yaffs in an application via
- * a direct interface.
- */
-
-
-#ifndef __YAFFSCFG_H__
-#define __YAFFSCFG_H__
-
-
-#include "devextras.h"
-
-#define YAFFSFS_N_HANDLES 200
-
-
-typedef struct {
- const char *prefix;
- struct yaffs_DeviceStruct *dev;
-} yaffsfs_DeviceConfiguration;
-
-
-void yaffsfs_Lock(void);
-void yaffsfs_Unlock(void);
-
-__u32 yaffsfs_CurrentTime(void);
-
-void yaffsfs_SetError(int err);
-int yaffsfs_GetError(void);
-
-#endif
-
+++ /dev/null
-/*
- * 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.
- */
-
-/* XXX U-BOOT XXX */
-#include <common.h>
-#include <malloc.h>
-
-#include "yaffsfs.h"
-#include "yaffs_guts.h"
-#include "yaffscfg.h"
-#include "yportenv.h"
-
-/* XXX U-BOOT XXX */
-#if 0
-#include <string.h> // for memset
-#endif
-
-#define YAFFSFS_MAX_SYMLINK_DEREFERENCES 5
-
-#ifndef NULL
-#define NULL ((void *)0)
-#endif
-
-
-const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.18 2007/07/18 19:40:38 charles Exp $";
-
-// configurationList is the list of devices that are supported
-static yaffsfs_DeviceConfiguration *yaffsfs_configurationList;
-
-
-/* Some forward references */
-static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const char *path, int symDepth);
-static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj);
-
-
-// Handle management.
-//
-
-
-unsigned int yaffs_wr_attempts;
-
-typedef struct
-{
- __u8 inUse:1; // this handle is in use
- __u8 readOnly:1; // this handle is read only
- __u8 append:1; // append only
- __u8 exclusive:1; // exclusive
- __u32 position; // current position in file
- yaffs_Object *obj; // the object
-}yaffsfs_Handle;
-
-
-static yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
-
-// yaffsfs_InitHandle
-/// Inilitalise handles on start-up.
-//
-static int yaffsfs_InitHandles(void)
-{
- int i;
- for(i = 0; i < YAFFSFS_N_HANDLES; i++)
- {
- yaffsfs_handle[i].inUse = 0;
- yaffsfs_handle[i].obj = NULL;
- }
- return 0;
-}
-
-yaffsfs_Handle *yaffsfs_GetHandlePointer(int h)
-{
- if(h < 0 || h >= YAFFSFS_N_HANDLES)
- {
- return NULL;
- }
-
- return &yaffsfs_handle[h];
-}
-
-yaffs_Object *yaffsfs_GetHandleObject(int handle)
-{
- yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
-
- if(h && h->inUse)
- {
- return h->obj;
- }
-
- return NULL;
-}
-
-
-//yaffsfs_GetHandle
-// Grab a handle (when opening a file)
-//
-
-static int yaffsfs_GetHandle(void)
-{
- int i;
- yaffsfs_Handle *h;
-
- for(i = 0; i < YAFFSFS_N_HANDLES; i++)
- {
- h = yaffsfs_GetHandlePointer(i);
- if(!h)
- {
- // todo bug: should never happen
- }
- if(!h->inUse)
- {
- memset(h,0,sizeof(yaffsfs_Handle));
- h->inUse=1;
- return i;
- }
- }
- return -1;
-}
-
-// yaffs_PutHandle
-// Let go of a handle (when closing a file)
-//
-static int yaffsfs_PutHandle(int handle)
-{
- yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
-
- if(h)
- {
- h->inUse = 0;
- h->obj = NULL;
- }
- return 0;
-}
-
-
-
-// Stuff to search for a directory from a path
-
-
-int yaffsfs_Match(char a, char b)
-{
- // case sensitive
- return (a == b);
-}
-
-// yaffsfs_FindDevice
-// yaffsfs_FindRoot
-// Scan the configuration list to find the root.
-// Curveballs: Should match paths that end in '/' too
-// Curveball2 Might have "/x/ and "/x/y". Need to return the longest match
-static yaffs_Device *yaffsfs_FindDevice(const char *path, char **restOfPath)
-{
- yaffsfs_DeviceConfiguration *cfg = yaffsfs_configurationList;
- const char *leftOver;
- const char *p;
- yaffs_Device *retval = NULL;
- int thisMatchLength;
- int longestMatch = -1;
-
- // Check all configs, choose the one that:
- // 1) Actually matches a prefix (ie /a amd /abc will not match
- // 2) Matches the longest.
- while(cfg && cfg->prefix && cfg->dev)
- {
- leftOver = path;
- p = cfg->prefix;
- thisMatchLength = 0;
-
- while(*p && //unmatched part of prefix
- strcmp(p,"/") && // the rest of the prefix is not / (to catch / at end)
- *leftOver &&
- yaffsfs_Match(*p,*leftOver))
- {
- p++;
- leftOver++;
- thisMatchLength++;
- }
- if((!*p || strcmp(p,"/") == 0) && // end of prefix
- (!*leftOver || *leftOver == '/') && // no more in this path name part
- (thisMatchLength > longestMatch))
- {
- // Matched prefix
- *restOfPath = (char *)leftOver;
- retval = cfg->dev;
- longestMatch = thisMatchLength;
- }
- cfg++;
- }
- return retval;
-}
-
-static yaffs_Object *yaffsfs_FindRoot(const char *path, char **restOfPath)
-{
-
- yaffs_Device *dev;
-
- dev= yaffsfs_FindDevice(path,restOfPath);
- if(dev && dev->isMounted)
- {
- return dev->rootDir;
- }
- return NULL;
-}
-
-static yaffs_Object *yaffsfs_FollowLink(yaffs_Object *obj,int symDepth)
-{
-
- while(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
- {
- char *alias = obj->variant.symLinkVariant.alias;
-
- if(*alias == '/')
- {
- // Starts with a /, need to scan from root up
- obj = yaffsfs_FindObject(NULL,alias,symDepth++);
- }
- else
- {
- // Relative to here, so use the parent of the symlink as a start
- obj = yaffsfs_FindObject(obj->parent,alias,symDepth++);
- }
- }
- return obj;
-}
-
-
-// yaffsfs_FindDirectory
-// Parse a path to determine the directory and the name within the directory.
-//
-// eg. "/data/xx/ff" --> puts name="ff" and returns the directory "/data/xx"
-static yaffs_Object *yaffsfs_DoFindDirectory(yaffs_Object *startDir,const char *path,char **name,int symDepth)
-{
- yaffs_Object *dir;
- char *restOfPath;
- char str[YAFFS_MAX_NAME_LENGTH+1];
- int i;
-
- if(symDepth > YAFFSFS_MAX_SYMLINK_DEREFERENCES)
- {
- return NULL;
- }
-
- if(startDir)
- {
- dir = startDir;
- restOfPath = (char *)path;
- }
- else
- {
- dir = yaffsfs_FindRoot(path,&restOfPath);
- }
-
- while(dir)
- {
- // parse off /.
- // curve ball: also throw away surplus '/'
- // eg. "/ram/x////ff" gets treated the same as "/ram/x/ff"
- while(*restOfPath == '/')
- {
- restOfPath++; // get rid of '/'
- }
-
- *name = restOfPath;
- i = 0;
-
- while(*restOfPath && *restOfPath != '/')
- {
- if (i < YAFFS_MAX_NAME_LENGTH)
- {
- str[i] = *restOfPath;
- str[i+1] = '\0';
- i++;
- }
- restOfPath++;
- }
-
- if(!*restOfPath)
- {
- // got to the end of the string
- return dir;
- }
- else
- {
- if(strcmp(str,".") == 0)
- {
- // Do nothing
- }
- else if(strcmp(str,"..") == 0)
- {
- dir = dir->parent;
- }
- else
- {
- dir = yaffs_FindObjectByName(dir,str);
-
- while(dir && dir->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
- {
-
- dir = yaffsfs_FollowLink(dir,symDepth);
-
- }
-
- if(dir && dir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- dir = NULL;
- }
- }
- }
- }
- // directory did not exist.
- return NULL;
-}
-
-static yaffs_Object *yaffsfs_FindDirectory(yaffs_Object *relativeDirectory,const char *path,char **name,int symDepth)
-{
- return yaffsfs_DoFindDirectory(relativeDirectory,path,name,symDepth);
-}
-
-// yaffsfs_FindObject turns a path for an existing object into the object
-//
-static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const char *path,int symDepth)
-{
- yaffs_Object *dir;
- char *name;
-
- dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth);
-
- if(dir && *name)
- {
- return yaffs_FindObjectByName(dir,name);
- }
-
- return dir;
-}
-
-
-
-int yaffs_open(const char *path, int oflag, int mode)
-{
- yaffs_Object *obj = NULL;
- yaffs_Object *dir = NULL;
- char *name;
- int handle = -1;
- yaffsfs_Handle *h = NULL;
- int alreadyOpen = 0;
- int alreadyExclusive = 0;
- int openDenied = 0;
- int symDepth = 0;
- int errorReported = 0;
-
- int i;
-
-
- // todo sanity check oflag (eg. can't have O_TRUNC without WRONLY or RDWR
-
-
- yaffsfs_Lock();
-
- handle = yaffsfs_GetHandle();
-
- if(handle >= 0)
- {
-
- h = yaffsfs_GetHandlePointer(handle);
-
-
- // try to find the exisiting object
- obj = yaffsfs_FindObject(NULL,path,0);
-
- if(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
- {
-
- obj = yaffsfs_FollowLink(obj,symDepth++);
- }
-
- if(obj)
- {
- // Check if the object is already in use
- alreadyOpen = alreadyExclusive = 0;
-
- for(i = 0; i <= YAFFSFS_N_HANDLES; i++)
- {
-
- if(i != handle &&
- yaffsfs_handle[i].inUse &&
- obj == yaffsfs_handle[i].obj)
- {
- alreadyOpen = 1;
- if(yaffsfs_handle[i].exclusive)
- {
- alreadyExclusive = 1;
- }
- }
- }
-
- if(((oflag & O_EXCL) && alreadyOpen) || alreadyExclusive)
- {
- openDenied = 1;
- }
-
- // Open should fail if O_CREAT and O_EXCL are specified
- if((oflag & O_EXCL) && (oflag & O_CREAT))
- {
- openDenied = 1;
- yaffsfs_SetError(-EEXIST);
- errorReported = 1;
- }
-
- // Check file permissions
- if( (oflag & (O_RDWR | O_WRONLY)) == 0 && // ie O_RDONLY
- !(obj->yst_mode & S_IREAD))
- {
- openDenied = 1;
- }
-
- if( (oflag & O_RDWR) &&
- !(obj->yst_mode & S_IREAD))
- {
- openDenied = 1;
- }
-
- if( (oflag & (O_RDWR | O_WRONLY)) &&
- !(obj->yst_mode & S_IWRITE))
- {
- openDenied = 1;
- }
-
- }
-
- else if((oflag & O_CREAT))
- {
- // Let's see if we can create this file
- dir = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(dir)
- {
- obj = yaffs_MknodFile(dir,name,mode,0,0);
- }
- else
- {
- yaffsfs_SetError(-ENOTDIR);
- }
- }
-
- if(obj && !openDenied)
- {
- h->obj = obj;
- h->inUse = 1;
- h->readOnly = (oflag & (O_WRONLY | O_RDWR)) ? 0 : 1;
- h->append = (oflag & O_APPEND) ? 1 : 0;
- h->exclusive = (oflag & O_EXCL) ? 1 : 0;
- h->position = 0;
-
- obj->inUse++;
- if((oflag & O_TRUNC) && !h->readOnly)
- {
- //todo truncate
- yaffs_ResizeFile(obj,0);
- }
-
- }
- else
- {
- yaffsfs_PutHandle(handle);
- if(!errorReported)
- {
- yaffsfs_SetError(-EACCESS);
- errorReported = 1;
- }
- handle = -1;
- }
-
- }
-
- yaffsfs_Unlock();
-
- return handle;
-}
-
-int yaffs_close(int fd)
-{
- yaffsfs_Handle *h = NULL;
- int retVal = 0;
-
- yaffsfs_Lock();
-
- h = yaffsfs_GetHandlePointer(fd);
-
- if(h && h->inUse)
- {
- // clean up
- yaffs_FlushFile(h->obj,1);
- h->obj->inUse--;
- if(h->obj->inUse <= 0 && h->obj->unlinked)
- {
- yaffs_DeleteFile(h->obj);
- }
- yaffsfs_PutHandle(fd);
- retVal = 0;
- }
- else
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- retVal = -1;
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-}
-
-int yaffs_read(int fd, void *buf, unsigned int nbyte)
-{
- yaffsfs_Handle *h = NULL;
- yaffs_Object *obj = NULL;
- int pos = 0;
- int nRead = -1;
- int maxRead;
-
- yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
-
- if(!h || !obj)
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
- else if( h && obj)
- {
- pos= h->position;
- if(yaffs_GetObjectFileLength(obj) > pos)
- {
- maxRead = yaffs_GetObjectFileLength(obj) - pos;
- }
- else
- {
- maxRead = 0;
- }
-
- if(nbyte > maxRead)
- {
- nbyte = maxRead;
- }
-
-
- if(nbyte > 0)
- {
- nRead = yaffs_ReadDataFromFile(obj,buf,pos,nbyte);
- if(nRead >= 0)
- {
- h->position = pos + nRead;
- }
- else
- {
- //todo error
- }
- }
- else
- {
- nRead = 0;
- }
-
- }
-
- yaffsfs_Unlock();
-
-
- return (nRead >= 0) ? nRead : -1;
-
-}
-
-int yaffs_write(int fd, const void *buf, unsigned int nbyte)
-{
- yaffsfs_Handle *h = NULL;
- yaffs_Object *obj = NULL;
- int pos = 0;
- int nWritten = -1;
- int writeThrough = 0;
-
- yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
-
- if(!h || !obj)
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
- else if( h && obj && h->readOnly)
- {
- // todo error
- }
- else if( h && obj)
- {
- if(h->append)
- {
- pos = yaffs_GetObjectFileLength(obj);
- }
- else
- {
- pos = h->position;
- }
-
- nWritten = yaffs_WriteDataToFile(obj,buf,pos,nbyte,writeThrough);
-
- if(nWritten >= 0)
- {
- h->position = pos + nWritten;
- }
- else
- {
- //todo error
- }
-
- }
-
- yaffsfs_Unlock();
-
-
- return (nWritten >= 0) ? nWritten : -1;
-
-}
-
-int yaffs_truncate(int fd, off_t newSize)
-{
- yaffsfs_Handle *h = NULL;
- yaffs_Object *obj = NULL;
- int result = 0;
-
- yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
-
- if(!h || !obj)
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
- else
- {
- // resize the file
- result = yaffs_ResizeFile(obj,newSize);
- }
- yaffsfs_Unlock();
-
-
- return (result) ? 0 : -1;
-
-}
-
-off_t yaffs_lseek(int fd, off_t offset, int whence)
-{
- yaffsfs_Handle *h = NULL;
- yaffs_Object *obj = NULL;
- int pos = -1;
- int fSize = -1;
-
- yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
-
- if(!h || !obj)
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
- else if(whence == SEEK_SET)
- {
- if(offset >= 0)
- {
- pos = offset;
- }
- }
- else if(whence == SEEK_CUR)
- {
- if( (h->position + offset) >= 0)
- {
- pos = (h->position + offset);
- }
- }
- else if(whence == SEEK_END)
- {
- fSize = yaffs_GetObjectFileLength(obj);
- if(fSize >= 0 && (fSize + offset) >= 0)
- {
- pos = fSize + offset;
- }
- }
-
- if(pos >= 0)
- {
- h->position = pos;
- }
- else
- {
- // todo error
- }
-
-
- yaffsfs_Unlock();
-
- return pos;
-}
-
-
-int yaffsfs_DoUnlink(const char *path,int isDirectory)
-{
- yaffs_Object *dir = NULL;
- yaffs_Object *obj = NULL;
- char *name;
- int result = YAFFS_FAIL;
-
- yaffsfs_Lock();
-
- obj = yaffsfs_FindObject(NULL,path,0);
- dir = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(!dir)
- {
- yaffsfs_SetError(-ENOTDIR);
- }
- else if(!obj)
- {
- yaffsfs_SetError(-ENOENT);
- }
- else if(!isDirectory && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- yaffsfs_SetError(-EISDIR);
- }
- else if(isDirectory && obj->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- yaffsfs_SetError(-ENOTDIR);
- }
- else
- {
- result = yaffs_Unlink(dir,name);
-
- if(result == YAFFS_FAIL && isDirectory)
- {
- yaffsfs_SetError(-ENOTEMPTY);
- }
- }
-
- yaffsfs_Unlock();
-
- // todo error
-
- return (result == YAFFS_FAIL) ? -1 : 0;
-}
-int yaffs_rmdir(const char *path)
-{
- return yaffsfs_DoUnlink(path,1);
-}
-
-int yaffs_unlink(const char *path)
-{
- return yaffsfs_DoUnlink(path,0);
-}
-
-int yaffs_rename(const char *oldPath, const char *newPath)
-{
- yaffs_Object *olddir = NULL;
- yaffs_Object *newdir = NULL;
- yaffs_Object *obj = NULL;
- char *oldname;
- char *newname;
- int result= YAFFS_FAIL;
- int renameAllowed = 1;
-
- yaffsfs_Lock();
-
- olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0);
- newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0);
- obj = yaffsfs_FindObject(NULL,oldPath,0);
-
- if(!olddir || !newdir || !obj)
- {
- // bad file
- yaffsfs_SetError(-EBADF);
- renameAllowed = 0;
- }
- else if(olddir->myDev != newdir->myDev)
- {
- // oops must be on same device
- // todo error
- yaffsfs_SetError(-EXDEV);
- renameAllowed = 0;
- }
- else if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- // It is a directory, check that it is not being renamed to
- // being its own decendent.
- // Do this by tracing from the new directory back to the root, checking for obj
-
- yaffs_Object *xx = newdir;
-
- while( renameAllowed && xx)
- {
- if(xx == obj)
- {
- renameAllowed = 0;
- }
- xx = xx->parent;
- }
- if(!renameAllowed) yaffsfs_SetError(-EACCESS);
- }
-
- if(renameAllowed)
- {
- result = yaffs_RenameObject(olddir,oldname,newdir,newname);
- }
-
- yaffsfs_Unlock();
-
- return (result == YAFFS_FAIL) ? -1 : 0;
-}
-
-
-static int yaffsfs_DoStat(yaffs_Object *obj,struct yaffs_stat *buf)
-{
- int retVal = -1;
-
- if(obj)
- {
- obj = yaffs_GetEquivalentObject(obj);
- }
-
- if(obj && buf)
- {
- buf->st_dev = (int)obj->myDev->genericDevice;
- buf->st_ino = obj->objectId;
- buf->st_mode = obj->yst_mode & ~S_IFMT; // clear out file type bits
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- buf->st_mode |= S_IFDIR;
- }
- else if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
- {
- buf->st_mode |= S_IFLNK;
- }
- else if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
- {
- buf->st_mode |= S_IFREG;
- }
-
- buf->st_nlink = yaffs_GetObjectLinkCount(obj);
- buf->st_uid = 0;
- buf->st_gid = 0;;
- buf->st_rdev = obj->yst_rdev;
- buf->st_size = yaffs_GetObjectFileLength(obj);
- buf->st_blksize = obj->myDev->nDataBytesPerChunk;
- buf->st_blocks = (buf->st_size + buf->st_blksize -1)/buf->st_blksize;
- buf->yst_atime = obj->yst_atime;
- buf->yst_ctime = obj->yst_ctime;
- buf->yst_mtime = obj->yst_mtime;
- retVal = 0;
- }
- return retVal;
-}
-
-static int yaffsfs_DoStatOrLStat(const char *path, struct yaffs_stat *buf,int doLStat)
-{
- yaffs_Object *obj;
-
- int retVal = -1;
-
- yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0);
-
- if(!doLStat && obj)
- {
- obj = yaffsfs_FollowLink(obj,0);
- }
-
- if(obj)
- {
- retVal = yaffsfs_DoStat(obj,buf);
- }
- else
- {
- // todo error not found
- yaffsfs_SetError(-ENOENT);
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-
-}
-
-int yaffs_stat(const char *path, struct yaffs_stat *buf)
-{
- return yaffsfs_DoStatOrLStat(path,buf,0);
-}
-
-int yaffs_lstat(const char *path, struct yaffs_stat *buf)
-{
- return yaffsfs_DoStatOrLStat(path,buf,1);
-}
-
-int yaffs_fstat(int fd, struct yaffs_stat *buf)
-{
- yaffs_Object *obj;
-
- int retVal = -1;
-
- yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
-
- if(obj)
- {
- retVal = yaffsfs_DoStat(obj,buf);
- }
- else
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-}
-
-static int yaffsfs_DoChMod(yaffs_Object *obj,mode_t mode)
-{
- int result = YAFFS_FAIL;
-
- if(obj)
- {
- obj = yaffs_GetEquivalentObject(obj);
- }
-
- if(obj)
- {
- obj->yst_mode = mode;
- obj->dirty = 1;
- result = yaffs_FlushFile(obj,0);
- }
-
- return result == YAFFS_OK ? 0 : -1;
-}
-
-
-int yaffs_chmod(const char *path, mode_t mode)
-{
- yaffs_Object *obj;
-
- int retVal = -1;
-
- yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0);
-
- if(obj)
- {
- retVal = yaffsfs_DoChMod(obj,mode);
- }
- else
- {
- // todo error not found
- yaffsfs_SetError(-ENOENT);
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-
-}
-
-
-int yaffs_fchmod(int fd, mode_t mode)
-{
- yaffs_Object *obj;
-
- int retVal = -1;
-
- yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
-
- if(obj)
- {
- retVal = yaffsfs_DoChMod(obj,mode);
- }
- else
- {
- // bad handle
- yaffsfs_SetError(-EBADF);
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-}
-
-
-int yaffs_mkdir(const char *path, mode_t mode)
-{
- yaffs_Object *parent = NULL;
- yaffs_Object *dir = NULL;
- char *name;
- int retVal= -1;
-
- yaffsfs_Lock();
- parent = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(parent)
- dir = yaffs_MknodDirectory(parent,name,mode,0,0);
- if(dir)
- {
- retVal = 0;
- }
- else
- {
- yaffsfs_SetError(-ENOSPC); // just assume no space for now
- retVal = -1;
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-}
-
-int yaffs_mount(const char *path)
-{
- int retVal=-1;
- int result=YAFFS_FAIL;
- yaffs_Device *dev=NULL;
- char *dummy;
-
- T(YAFFS_TRACE_ALWAYS,("yaffs: Mounting %s\n",path));
-
- yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev)
- {
- if(!dev->isMounted)
- {
- result = yaffs_GutsInitialise(dev);
- if(result == YAFFS_FAIL)
- {
- // todo error - mount failed
- yaffsfs_SetError(-ENOMEM);
- }
- retVal = result ? 0 : -1;
-
- }
- else
- {
- //todo error - already mounted.
- yaffsfs_SetError(-EBUSY);
- }
- }
- else
- {
- // todo error - no device
- yaffsfs_SetError(-ENODEV);
- }
- yaffsfs_Unlock();
- return retVal;
-
-}
-
-int yaffs_unmount(const char *path)
-{
- int retVal=-1;
- yaffs_Device *dev=NULL;
- char *dummy;
-
- yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev)
- {
- if(dev->isMounted)
- {
- int i;
- int inUse;
-
- yaffs_FlushEntireDeviceCache(dev);
- yaffs_CheckpointSave(dev);
-
- for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse; i++)
- {
- if(yaffsfs_handle[i].inUse && yaffsfs_handle[i].obj->myDev == dev)
- {
- inUse = 1; // the device is in use, can't unmount
- }
- }
-
- if(!inUse)
- {
- yaffs_Deinitialise(dev);
-
- retVal = 0;
- }
- else
- {
- // todo error can't unmount as files are open
- yaffsfs_SetError(-EBUSY);
- }
-
- }
- else
- {
- //todo error - not mounted.
- yaffsfs_SetError(-EINVAL);
-
- }
- }
- else
- {
- // todo error - no device
- yaffsfs_SetError(-ENODEV);
- }
- yaffsfs_Unlock();
- return retVal;
-
-}
-
-loff_t yaffs_freespace(const char *path)
-{
- loff_t retVal=-1;
- yaffs_Device *dev=NULL;
- char *dummy;
-
- yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev && dev->isMounted)
- {
- retVal = yaffs_GetNumberOfFreeChunks(dev);
- retVal *= dev->nDataBytesPerChunk;
-
- }
- else
- {
- yaffsfs_SetError(-EINVAL);
- }
-
- yaffsfs_Unlock();
- return retVal;
-}
-
-
-
-void yaffs_initialise(yaffsfs_DeviceConfiguration *cfgList)
-{
-
- yaffsfs_DeviceConfiguration *cfg;
-
- yaffsfs_configurationList = cfgList;
-
- yaffsfs_InitHandles();
-
- cfg = yaffsfs_configurationList;
-
- while(cfg && cfg->prefix && cfg->dev)
- {
- cfg->dev->isMounted = 0;
- cfg->dev->removeObjectCallback = yaffsfs_RemoveObjectCallback;
- cfg++;
- }
-}
-
-
-//
-// Directory search stuff.
-
-//
-// Directory search context
-//
-// NB this is an opaque structure.
-
-
-typedef struct
-{
- __u32 magic;
- yaffs_dirent de; /* directory entry being used by this dsc */
- char name[NAME_MAX+1]; /* name of directory being searched */
- yaffs_Object *dirObj; /* ptr to directory being searched */
- yaffs_Object *nextReturn; /* obj to be returned by next readddir */
- int offset;
- struct list_head others;
-} yaffsfs_DirectorySearchContext;
-
-
-
-static struct list_head search_contexts;
-
-
-static void yaffsfs_SetDirRewound(yaffsfs_DirectorySearchContext *dsc)
-{
- if(dsc &&
- dsc->dirObj &&
- dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
- dsc->offset = 0;
-
- if( list_empty(&dsc->dirObj->variant.directoryVariant.children)){
- dsc->nextReturn = NULL;
- } else {
- dsc->nextReturn = list_entry(dsc->dirObj->variant.directoryVariant.children.next,
- yaffs_Object,siblings);
- }
- } else {
- /* Hey someone isn't playing nice! */
- }
-}
-
-static void yaffsfs_DirAdvance(yaffsfs_DirectorySearchContext *dsc)
-{
- if(dsc &&
- dsc->dirObj &&
- dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
- if( dsc->nextReturn == NULL ||
- list_empty(&dsc->dirObj->variant.directoryVariant.children)){
- dsc->nextReturn = NULL;
- } else {
- struct list_head *next = dsc->nextReturn->siblings.next;
-
- if( next == &dsc->dirObj->variant.directoryVariant.children)
- dsc->nextReturn = NULL; /* end of list */
- else
- dsc->nextReturn = list_entry(next,yaffs_Object,siblings);
- }
- } else {
- /* Hey someone isn't playing nice! */
- }
-}
-
-static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj)
-{
-
- struct list_head *i;
- yaffsfs_DirectorySearchContext *dsc;
-
- /* if search contexts not initilised then skip */
- if(!search_contexts.next)
- return;
-
- /* Iteratethrough the directory search contexts.
- * If any are the one being removed, then advance the dsc to
- * the next one to prevent a hanging ptr.
- */
- list_for_each(i, &search_contexts) {
- if (i) {
- dsc = list_entry(i, yaffsfs_DirectorySearchContext,others);
- if(dsc->nextReturn == obj)
- yaffsfs_DirAdvance(dsc);
- }
- }
-
-}
-
-yaffs_DIR *yaffs_opendir(const char *dirname)
-{
- yaffs_DIR *dir = NULL;
- yaffs_Object *obj = NULL;
- yaffsfs_DirectorySearchContext *dsc = NULL;
-
- yaffsfs_Lock();
-
- obj = yaffsfs_FindObject(NULL,dirname,0);
-
- if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
- {
-
- dsc = YMALLOC(sizeof(yaffsfs_DirectorySearchContext));
- dir = (yaffs_DIR *)dsc;
- if(dsc)
- {
- memset(dsc,0,sizeof(yaffsfs_DirectorySearchContext));
- dsc->magic = YAFFS_MAGIC;
- dsc->dirObj = obj;
- strncpy(dsc->name,dirname,NAME_MAX);
- INIT_LIST_HEAD(&dsc->others);
-
- if(!search_contexts.next)
- INIT_LIST_HEAD(&search_contexts);
-
- list_add(&dsc->others,&search_contexts);
- yaffsfs_SetDirRewound(dsc); }
-
- }
-
- yaffsfs_Unlock();
-
- return dir;
-}
-
-struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp)
-{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
- struct yaffs_dirent *retVal = NULL;
-
- yaffsfs_Lock();
-
- if(dsc && dsc->magic == YAFFS_MAGIC){
- yaffsfs_SetError(0);
- if(dsc->nextReturn){
- dsc->de.d_ino = yaffs_GetEquivalentObject(dsc->nextReturn)->objectId;
- dsc->de.d_dont_use = (unsigned)dsc->nextReturn;
- dsc->de.d_off = dsc->offset++;
- yaffs_GetObjectName(dsc->nextReturn,dsc->de.d_name,NAME_MAX);
- if(strlen(dsc->de.d_name) == 0)
- {
- // this should not happen!
- strcpy(dsc->de.d_name,"zz");
- }
- dsc->de.d_reclen = sizeof(struct yaffs_dirent);
- retVal = &dsc->de;
- yaffsfs_DirAdvance(dsc);
- } else
- retVal = NULL;
- }
- else
- {
- yaffsfs_SetError(-EBADF);
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-
-}
-
-
-void yaffs_rewinddir(yaffs_DIR *dirp)
-{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
-
- yaffsfs_Lock();
-
- yaffsfs_SetDirRewound(dsc);
-
- yaffsfs_Unlock();
-}
-
-
-int yaffs_closedir(yaffs_DIR *dirp)
-{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
-
- yaffsfs_Lock();
- dsc->magic = 0;
- list_del(&dsc->others); /* unhook from list */
- YFREE(dsc);
- yaffsfs_Unlock();
- return 0;
-}
-
-// end of directory stuff
-
-
-int yaffs_symlink(const char *oldpath, const char *newpath)
-{
- yaffs_Object *parent = NULL;
- yaffs_Object *obj;
- char *name;
- int retVal= -1;
- int mode = 0; // ignore for now
-
- yaffsfs_Lock();
- parent = yaffsfs_FindDirectory(NULL,newpath,&name,0);
- obj = yaffs_MknodSymLink(parent,name,mode,0,0,oldpath);
- if(obj)
- {
- retVal = 0;
- }
- else
- {
- yaffsfs_SetError(-ENOSPC); // just assume no space for now
- retVal = -1;
- }
-
- yaffsfs_Unlock();
-
- return retVal;
-
-}
-
-int yaffs_readlink(const char *path, char *buf, int bufsiz)
-{
- yaffs_Object *obj = NULL;
- int retVal;
-
-
- yaffsfs_Lock();
-
- obj = yaffsfs_FindObject(NULL,path,0);
-
- if(!obj)
- {
- yaffsfs_SetError(-ENOENT);
- retVal = -1;
- }
- else if(obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK)
- {
- yaffsfs_SetError(-EINVAL);
- retVal = -1;
- }
- else
- {
- char *alias = obj->variant.symLinkVariant.alias;
- memset(buf,0,bufsiz);
- strncpy(buf,alias,bufsiz - 1);
- retVal = 0;
- }
- yaffsfs_Unlock();
- return retVal;
-}
-
-int yaffs_link(const char *oldpath, const char *newpath)
-{
- // Creates a link called newpath to existing oldpath
- yaffs_Object *obj = NULL;
- yaffs_Object *target = NULL;
- int retVal = 0;
-
-
- yaffsfs_Lock();
-
- obj = yaffsfs_FindObject(NULL,oldpath,0);
- target = yaffsfs_FindObject(NULL,newpath,0);
-
- if(!obj)
- {
- yaffsfs_SetError(-ENOENT);
- retVal = -1;
- }
- else if(target)
- {
- yaffsfs_SetError(-EEXIST);
- retVal = -1;
- }
- else
- {
- yaffs_Object *newdir = NULL;
- yaffs_Object *link = NULL;
-
- char *newname;
-
- newdir = yaffsfs_FindDirectory(NULL,newpath,&newname,0);
-
- if(!newdir)
- {
- yaffsfs_SetError(-ENOTDIR);
- retVal = -1;
- }
- else if(newdir->myDev != obj->myDev)
- {
- yaffsfs_SetError(-EXDEV);
- retVal = -1;
- }
- if(newdir && strlen(newname) > 0)
- {
- link = yaffs_Link(newdir,newname,obj);
- if(link)
- retVal = 0;
- else
- {
- yaffsfs_SetError(-ENOSPC);
- retVal = -1;
- }
-
- }
- }
- yaffsfs_Unlock();
-
- return retVal;
-}
-
-int yaffs_mknod(const char *pathname, mode_t mode, dev_t dev);
-
-int yaffs_DumpDevStruct(const char *path)
-{
- char *rest;
-
- yaffs_Object *obj = yaffsfs_FindRoot(path,&rest);
-
- if(obj)
- {
- yaffs_Device *dev = obj->myDev;
-
- printf("\n"
- "nPageWrites.......... %d\n"
- "nPageReads........... %d\n"
- "nBlockErasures....... %d\n"
- "nGCCopies............ %d\n"
- "garbageCollections... %d\n"
- "passiveGarbageColl'ns %d\n"
- "\n",
- dev->nPageWrites,
- dev->nPageReads,
- dev->nBlockErasures,
- dev->nGCCopies,
- dev->garbageCollections,
- dev->passiveGarbageCollections
- );
-
- }
- return 0;
-}
+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * Header file for using yaffs in an application via
- * a direct interface.
- */
-
-
-#ifndef __YAFFSFS_H__
-#define __YAFFSFS_H__
-
-#include "yaffscfg.h"
-#include "yportenv.h"
-
-
-//typedef long off_t;
-//typedef long dev_t;
-//typedef unsigned long mode_t;
-
-
-#ifndef NAME_MAX
-#define NAME_MAX 256
-#endif
-
-#ifndef O_RDONLY
-#define O_RDONLY 00
-#endif
-
-#ifndef O_WRONLY
-#define O_WRONLY 01
-#endif
-
-#ifndef O_RDWR
-#define O_RDWR 02
-#endif
-
-#ifndef O_CREAT
-#define O_CREAT 0100
-#endif
-
-#ifndef O_EXCL
-#define O_EXCL 0200
-#endif
-
-#ifndef O_TRUNC
-#define O_TRUNC 01000
-#endif
-
-#ifndef O_APPEND
-#define O_APPEND 02000
-#endif
-
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-
-#ifndef SEEK_END
-#define SEEK_END 2
-#endif
-
-#ifndef EBUSY
-#define EBUSY 16
-#endif
-
-#ifndef ENODEV
-#define ENODEV 19
-#endif
-
-#ifndef EINVAL
-#define EINVAL 22
-#endif
-
-#ifndef EBADF
-#define EBADF 9
-#endif
-
-#ifndef EACCESS
-#define EACCESS 13
-#endif
-
-#ifndef EXDEV
-#define EXDEV 18
-#endif
-
-#ifndef ENOENT
-#define ENOENT 2
-#endif
-
-#ifndef ENOSPC
-#define ENOSPC 28
-#endif
-
-#ifndef ENOTEMPTY
-#define ENOTEMPTY 39
-#endif
-
-#ifndef ENOMEM
-#define ENOMEM 12
-#endif
-
-#ifndef EEXIST
-#define EEXIST 17
-#endif
-
-#ifndef ENOTDIR
-#define ENOTDIR 20
-#endif
-
-#ifndef EISDIR
-#define EISDIR 21
-#endif
-
-
-// Mode flags
-
-#ifndef S_IFMT
-#define S_IFMT 0170000
-#endif
-
-#ifndef S_IFLNK
-#define S_IFLNK 0120000
-#endif
-
-#ifndef S_IFDIR
-#define S_IFDIR 0040000
-#endif
-
-#ifndef S_IFREG
-#define S_IFREG 0100000
-#endif
-
-#ifndef S_IREAD
-#define S_IREAD 0000400
-#endif
-
-#ifndef S_IWRITE
-#define S_IWRITE 0000200
-#endif
-
-
-
-
-struct yaffs_dirent{
- long d_ino; /* inode number */
- off_t d_off; /* offset to this dirent */
- unsigned short d_reclen; /* length of this d_name */
- char d_name [NAME_MAX+1]; /* file name (null-terminated) */
- unsigned d_dont_use; /* debug pointer, not for public consumption */
-};
-
-typedef struct yaffs_dirent yaffs_dirent;
-
-
-typedef struct __opaque yaffs_DIR;
-
-
-
-struct yaffs_stat{
- int st_dev; /* device */
- int st_ino; /* inode */
- mode_t st_mode; /* protection */
- int st_nlink; /* number of hard links */
- int st_uid; /* user ID of owner */
- int st_gid; /* group ID of owner */
- unsigned st_rdev; /* device type (if inode device) */
- off_t st_size; /* total size, in bytes */
- unsigned long st_blksize; /* blocksize for filesystem I/O */
- unsigned long st_blocks; /* number of blocks allocated */
- unsigned long yst_atime; /* time of last access */
- unsigned long yst_mtime; /* time of last modification */
- unsigned long yst_ctime; /* time of last change */
-};
-
-int yaffs_open(const char *path, int oflag, int mode) ;
-int yaffs_read(int fd, void *buf, unsigned int nbyte) ;
-int yaffs_write(int fd, const void *buf, unsigned int nbyte) ;
-int yaffs_close(int fd) ;
-off_t yaffs_lseek(int fd, off_t offset, int whence) ;
-int yaffs_truncate(int fd, off_t newSize);
-
-int yaffs_unlink(const char *path) ;
-int yaffs_rename(const char *oldPath, const char *newPath) ;
-
-int yaffs_stat(const char *path, struct yaffs_stat *buf) ;
-int yaffs_lstat(const char *path, struct yaffs_stat *buf) ;
-int yaffs_fstat(int fd, struct yaffs_stat *buf) ;
-
-int yaffs_chmod(const char *path, mode_t mode);
-int yaffs_fchmod(int fd, mode_t mode);
-
-int yaffs_mkdir(const char *path, mode_t mode) ;
-int yaffs_rmdir(const char *path) ;
-
-yaffs_DIR *yaffs_opendir(const char *dirname) ;
-struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp) ;
-void yaffs_rewinddir(yaffs_DIR *dirp) ;
-int yaffs_closedir(yaffs_DIR *dirp) ;
-
-int yaffs_mount(const char *path) ;
-int yaffs_unmount(const char *path) ;
-
-int yaffs_symlink(const char *oldpath, const char *newpath);
-int yaffs_readlink(const char *path, char *buf, int bufsiz);
-
-int yaffs_link(const char *oldpath, const char *newpath);
-int yaffs_mknod(const char *pathname, mode_t mode, dev_t dev);
-
-loff_t yaffs_freespace(const char *path);
-
-void yaffs_initialise(yaffsfs_DeviceConfiguration *configList);
-
-int yaffs_StartUp(void);
-
-#endif
-
-
+++ /dev/null
-../yaffsinterface.h
\ No newline at end of file
+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * ydirectenv.h: Environment wrappers for YAFFS direct.
- */
-
-#ifndef __YDIRECTENV_H__
-#define __YDIRECTENV_H__
-
-// Direct interface
-
-#include "devextras.h"
-
-/* XXX U-BOOT XXX */
-#if 0
-#include "stdlib.h"
-#include "stdio.h"
-#include "string.h"
-#include "assert.h"
-#endif
-#include "yaffs_malloc.h"
-
-/* XXX U-BOOT XXX */
-#if 0
-#define YBUG() assert(1)
-#endif
-
-#define YCHAR char
-#define YUCHAR unsigned char
-#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)
-
-#ifdef NO_Y_INLINE
-#define Y_INLINE
-#else
-#define Y_INLINE inline
-#endif
-
-#define YMALLOC(x) yaffs_malloc(x)
-#define YFREE(x) free(x)
-#define YMALLOC_ALT(x) yaffs_malloc(x)
-#define YFREE_ALT(x) free(x)
-
-#define YMALLOC_DMA(x) yaffs_malloc(x)
-
-#define YYIELD() do {} while(0)
-
-
-
-//#define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s))
-//#define YALERT(s) YINFO(s)
-
-
-#define TENDSTR "\n"
-#define TSTR(x) x
-#define TOUT(p) printf p
-
-
-#define YAFFS_LOSTNFOUND_NAME "lost+found"
-#define YAFFS_LOSTNFOUND_PREFIX "obj"
-//#define YPRINTF(x) printf x
-
-#include "yaffscfg.h"
-
-#define Y_CURRENT_TIME yaffsfs_CurrentTime()
-#define Y_TIME_CONVERT(x) x
-
-#define YAFFS_ROOT_MODE 0666
-#define YAFFS_LOSTNFOUND_MODE 0666
-
-#define yaffs_SumCompare(x,y) ((x) == (y))
-#define yaffs_strcmp(a,b) strcmp(a,b)
-
-#endif
-
-
+++ /dev/null
-../yportenv.h
\ No newline at end of file
--- /dev/null
+/*
+ * 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_FLASH_H__
+#define __YAFFS_FLASH_H__
+
+
+#include "yaffs_guts.h"
+int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+int yflash_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare);
+int yflash_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags);
+int yflash_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare);
+int yflash_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags);
+int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+int yflash_InitialiseNAND(yaffs_Device *dev);
+int yflash_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+int yflash_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber);
+
+#endif
--- /dev/null
+#ifndef __YAFFS_MALLOC_H__
+/*
+ * 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.
+ */
+
+/* XXX U-BOOT XXX */
+#if 0
+#include <stdlib.h>
+#endif
+
+void *yaffs_malloc(size_t size);
+void yaffs_free(void *ptr);
+
+#endif
+
--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * yaffs_ramdisk.h: yaffs ram disk component
+ */
+
+#ifndef __YAFFS_RAMDISK_H__
+#define __YAFFS_RAMDISK_H__
+
+
+#include "yaffs_guts.h"
+int yramdisk_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+int yramdisk_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags);
+int yramdisk_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags);
+int yramdisk_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+int yramdisk_InitialiseNAND(yaffs_Device *dev);
+int yramdisk_MarkNANDBlockBad(yaffs_Device *dev,int blockNumber);
+int yramdisk_QueryNANDBlock(yaffs_Device *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber);
+#endif
--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * yaffscfg.c The configuration for the "direct" use of yaffs.
+ *
+ * This file is intended to be modified to your requirements.
+ * There is no need to redistribute this file.
+ */
+
+/* XXX U-BOOT XXX */
+#include <common.h>
+
+#include <config.h>
+#include "nand.h"
+#include "yaffscfg.h"
+#include "yaffsfs.h"
+#include "yaffs_packedtags2.h"
+#include "yaffs_mtdif.h"
+#include "yaffs_mtdif2.h"
+#if 0
+#include <errno.h>
+#else
+#include "malloc.h"
+#endif
+
+unsigned yaffs_traceMask = 0xFFFFFFFF;
+static int yaffs_errno = 0;
+
+void yaffsfs_SetError(int err)
+{
+ //Do whatever to set error
+ yaffs_errno = err;
+}
+
+int yaffsfs_GetError(void)
+{
+ return yaffs_errno;
+}
+
+void yaffsfs_Lock(void)
+{
+}
+
+void yaffsfs_Unlock(void)
+{
+}
+
+__u32 yaffsfs_CurrentTime(void)
+{
+ return 0;
+}
+
+void *yaffs_malloc(size_t size)
+{
+ return malloc(size);
+}
+
+void yaffs_free(void *ptr)
+{
+ free(ptr);
+}
+
+void yaffsfs_LocalInitialisation(void)
+{
+ // Define locking semaphore.
+}
+
+// Configuration for:
+// /ram 2MB ramdisk
+// /boot 2MB boot disk (flash)
+// /flash 14MB flash disk (flash)
+// NB Though /boot and /flash occupy the same physical device they
+// are still disticnt "yaffs_Devices. You may think of these as "partitions"
+// using non-overlapping areas in the same device.
+//
+
+#include "yaffs_ramdisk.h"
+#include "yaffs_flashif.h"
+
+static int isMounted = 0;
+#define MOUNT_POINT "/flash"
+extern nand_info_t nand_info[];
+
+/* XXX U-BOOT XXX */
+#if 0
+static yaffs_Device ramDev;
+static yaffs_Device bootDev;
+static yaffs_Device flashDev;
+#endif
+
+static yaffsfs_DeviceConfiguration yaffsfs_config[] = {
+/* XXX U-BOOT XXX */
+#if 0
+ { "/ram", &ramDev},
+ { "/boot", &bootDev},
+ { "/flash", &flashDev},
+#else
+ { MOUNT_POINT, 0},
+#endif
+ {(void *)0,(void *)0}
+};
+
+
+int yaffs_StartUp(void)
+{
+ struct mtd_info *mtd = &nand_info[0];
+ int yaffsVersion = 2;
+ int nBlocks;
+
+ yaffs_Device *flashDev = calloc(1, sizeof(yaffs_Device));
+ yaffsfs_config[0].dev = flashDev;
+
+ // Stuff to configure YAFFS
+ // Stuff to initialise anything special (eg lock semaphore).
+ yaffsfs_LocalInitialisation();
+
+ // Set up devices
+
+/* XXX U-BOOT XXX */
+#if 0
+ // /ram
+ ramDev.nBytesPerChunk = 512;
+ ramDev.nChunksPerBlock = 32;
+ ramDev.nReservedBlocks = 2; // Set this smaller for RAM
+ ramDev.startBlock = 1; // Can't use block 0
+ ramDev.endBlock = 127; // Last block in 2MB.
+ ramDev.useNANDECC = 1;
+ ramDev.nShortOpCaches = 0; // Disable caching on this device.
+ ramDev.genericDevice = (void *) 0; // Used to identify the device in fstat.
+ ramDev.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND;
+ ramDev.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND;
+ ramDev.eraseBlockInNAND = yramdisk_EraseBlockInNAND;
+ ramDev.initialiseNAND = yramdisk_InitialiseNAND;
+
+ // /boot
+ bootDev.nBytesPerChunk = 612;
+ bootDev.nChunksPerBlock = 32;
+ bootDev.nReservedBlocks = 5;
+ bootDev.startBlock = 1; // Can't use block 0
+ bootDev.endBlock = 127; // Last block in 2MB.
+ bootDev.useNANDECC = 0; // use YAFFS's ECC
+ bootDev.nShortOpCaches = 10; // Use caches
+ bootDev.genericDevice = (void *) 1; // Used to identify the device in fstat.
+ bootDev.writeChunkToNAND = yflash_WriteChunkToNAND;
+ bootDev.readChunkFromNAND = yflash_ReadChunkFromNAND;
+ bootDev.eraseBlockInNAND = yflash_EraseBlockInNAND;
+ bootDev.initialiseNAND = yflash_InitialiseNAND;
+#endif
+
+ // /flash
+ flashDev->nReservedBlocks = 5;
+// flashDev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+ flashDev->nShortOpCaches = 10; // Use caches
+ flashDev->useNANDECC = 0; // do not use YAFFS's ECC
+
+ if (yaffsVersion == 2)
+ {
+ flashDev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND;
+ flashDev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND;
+ flashDev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
+ flashDev->queryNANDBlock = nandmtd2_QueryNANDBlock;
+ flashDev->spareBuffer = YMALLOC(mtd->oobsize);
+ flashDev->isYaffs2 = 1;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ flashDev->nDataBytesPerChunk = mtd->writesize;
+ flashDev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+#else
+ flashDev->nDataBytesPerChunk = mtd->oobblock;
+ flashDev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+#endif
+ nBlocks = mtd->size / mtd->erasesize;
+
+ flashDev->nCheckpointReservedBlocks = 10;
+ flashDev->startBlock = 0;
+ flashDev->endBlock = nBlocks - 1;
+ }
+ else
+ {
+ flashDev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
+ flashDev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
+ flashDev->isYaffs2 = 0;
+ nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+ flashDev->startBlock = 320;
+ flashDev->endBlock = nBlocks - 1;
+ flashDev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+ flashDev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ }
+
+ /* ... and common functions */
+ flashDev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
+ flashDev->initialiseNAND = nandmtd_InitialiseNAND;
+
+ yaffs_initialise(yaffsfs_config);
+
+ return 0;
+}
+
+
+void make_a_file(char *yaffsName,char bval,int sizeOfFile)
+{
+ int outh;
+ int i;
+ unsigned char buffer[100];
+
+ outh = yaffs_open(yaffsName, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
+ if (outh < 0)
+ {
+ printf("Error opening file: %d\n", outh);
+ return;
+ }
+
+ memset(buffer,bval,100);
+
+ do{
+ i = sizeOfFile;
+ if(i > 100) i = 100;
+ sizeOfFile -= i;
+
+ yaffs_write(outh,buffer,i);
+
+ } while (sizeOfFile > 0);
+
+
+ yaffs_close(outh);
+}
+
+void read_a_file(char *fn)
+{
+ int h;
+ int i = 0;
+ unsigned char b;
+
+ h = yaffs_open(fn, O_RDWR,0);
+ if(h<0)
+ {
+ printf("File not found\n");
+ return;
+ }
+
+ while(yaffs_read(h,&b,1)> 0)
+ {
+ printf("%02x ",b);
+ i++;
+ if(i > 32)
+ {
+ printf("\n");
+ i = 0;;
+ }
+ }
+ printf("\n");
+ yaffs_close(h);
+}
+
+void cmd_yaffs_mount(char *mp)
+{
+ yaffs_StartUp();
+ int retval = yaffs_mount(mp);
+ if( retval != -1)
+ isMounted = 1;
+ else
+ printf("Error mounting %s, return value: %d\n", mp, yaffsfs_GetError());
+}
+
+static void checkMount(void)
+{
+ if( !isMounted )
+ {
+ cmd_yaffs_mount(MOUNT_POINT);
+ }
+}
+
+void cmd_yaffs_umount(char *mp)
+{
+ checkMount();
+ if( yaffs_unmount(mp) == -1)
+ printf("Error umounting %s, return value: %d\n", mp, yaffsfs_GetError());
+}
+
+void cmd_yaffs_write_file(char *yaffsName,char bval,int sizeOfFile)
+{
+ checkMount();
+ make_a_file(yaffsName,bval,sizeOfFile);
+}
+
+
+void cmd_yaffs_read_file(char *fn)
+{
+ checkMount();
+ read_a_file(fn);
+}
+
+
+void cmd_yaffs_mread_file(char *fn, char *addr)
+{
+ int h;
+ struct yaffs_stat s;
+
+ checkMount();
+
+ yaffs_stat(fn,&s);
+
+ printf ("Copy %s to 0x%08x... ", fn, addr);
+ h = yaffs_open(fn, O_RDWR,0);
+ if(h<0)
+ {
+ printf("File not found\n");
+ return;
+ }
+
+ yaffs_read(h,addr,(int)s.st_size);
+ printf("\t[DONE]\n");
+
+ yaffs_close(h);
+}
+
+
+void cmd_yaffs_mwrite_file(char *fn, char *addr, int size)
+{
+ int outh;
+
+ checkMount();
+ outh = yaffs_open(fn, O_CREAT | O_RDWR | O_TRUNC, S_IREAD | S_IWRITE);
+ if (outh < 0)
+ {
+ printf("Error opening file: %d\n", outh);
+ }
+
+ yaffs_write(outh,addr,size);
+
+ yaffs_close(outh);
+}
+
+
+void cmd_yaffs_ls(const char *mountpt, int longlist)
+{
+ int i;
+ yaffs_DIR *d;
+ yaffs_dirent *de;
+ struct yaffs_stat stat;
+ char tempstr[255];
+
+ checkMount();
+ d = yaffs_opendir(mountpt);
+
+ if(!d)
+ {
+ printf("opendir failed\n");
+ }
+ else
+ {
+ for(i = 0; (de = yaffs_readdir(d)) != NULL; i++)
+ {
+ if (longlist)
+ {
+ sprintf(tempstr, "%s/%s", mountpt, de->d_name);
+ yaffs_stat(tempstr, &stat);
+ printf("%-25s\t%7d\n",de->d_name, stat.st_size);
+ }
+ else
+ {
+ printf("%s\n",de->d_name);
+ }
+ }
+ }
+}
+
+
+void cmd_yaffs_mkdir(const char *dir)
+{
+ checkMount();
+
+ int retval = yaffs_mkdir(dir, 0);
+
+ if ( retval < 0)
+ printf("yaffs_mkdir returning error: %d\n", retval);
+}
+
+void cmd_yaffs_rmdir(const char *dir)
+{
+ checkMount();
+
+ int retval = yaffs_rmdir(dir);
+
+ if ( retval < 0)
+ printf("yaffs_rmdir returning error: %d\n", retval);
+}
+
+void cmd_yaffs_rm(const char *path)
+{
+ checkMount();
+
+ int retval = yaffs_unlink(path);
+
+ if ( retval < 0)
+ printf("yaffs_unlink returning error: %d\n", retval);
+}
+
+void cmd_yaffs_mv(const char *oldPath, const char *newPath)
+{
+ checkMount();
+
+ int retval = yaffs_rename(newPath, oldPath);
+
+ if ( retval < 0)
+ printf("yaffs_unlink returning error: %d\n", retval);
+}
--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * Header file for using yaffs in an application via
+ * a direct interface.
+ */
+
+
+#ifndef __YAFFSCFG_H__
+#define __YAFFSCFG_H__
+
+
+#include "devextras.h"
+
+#define YAFFSFS_N_HANDLES 200
+
+
+typedef struct {
+ const char *prefix;
+ struct yaffs_DeviceStruct *dev;
+} yaffsfs_DeviceConfiguration;
+
+
+void yaffsfs_Lock(void);
+void yaffsfs_Unlock(void);
+
+__u32 yaffsfs_CurrentTime(void);
+
+void yaffsfs_SetError(int err);
+int yaffsfs_GetError(void);
+
+#endif
+
--- /dev/null
+/*
+ * 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.
+ */
+
+/* XXX U-BOOT XXX */
+#include <common.h>
+#include <malloc.h>
+
+#include "yaffsfs.h"
+#include "yaffs_guts.h"
+#include "yaffscfg.h"
+#include "yportenv.h"
+
+/* XXX U-BOOT XXX */
+#if 0
+#include <string.h> // for memset
+#endif
+
+#define YAFFSFS_MAX_SYMLINK_DEREFERENCES 5
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+
+const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.18 2007/07/18 19:40:38 charles Exp $";
+
+// configurationList is the list of devices that are supported
+static yaffsfs_DeviceConfiguration *yaffsfs_configurationList;
+
+
+/* Some forward references */
+static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const char *path, int symDepth);
+static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj);
+
+
+// Handle management.
+//
+
+
+unsigned int yaffs_wr_attempts;
+
+typedef struct
+{
+ __u8 inUse:1; // this handle is in use
+ __u8 readOnly:1; // this handle is read only
+ __u8 append:1; // append only
+ __u8 exclusive:1; // exclusive
+ __u32 position; // current position in file
+ yaffs_Object *obj; // the object
+}yaffsfs_Handle;
+
+
+static yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
+
+// yaffsfs_InitHandle
+/// Inilitalise handles on start-up.
+//
+static int yaffsfs_InitHandles(void)
+{
+ int i;
+ for(i = 0; i < YAFFSFS_N_HANDLES; i++)
+ {
+ yaffsfs_handle[i].inUse = 0;
+ yaffsfs_handle[i].obj = NULL;
+ }
+ return 0;
+}
+
+yaffsfs_Handle *yaffsfs_GetHandlePointer(int h)
+{
+ if(h < 0 || h >= YAFFSFS_N_HANDLES)
+ {
+ return NULL;
+ }
+
+ return &yaffsfs_handle[h];
+}
+
+yaffs_Object *yaffsfs_GetHandleObject(int handle)
+{
+ yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
+
+ if(h && h->inUse)
+ {
+ return h->obj;
+ }
+
+ return NULL;
+}
+
+
+//yaffsfs_GetHandle
+// Grab a handle (when opening a file)
+//
+
+static int yaffsfs_GetHandle(void)
+{
+ int i;
+ yaffsfs_Handle *h;
+
+ for(i = 0; i < YAFFSFS_N_HANDLES; i++)
+ {
+ h = yaffsfs_GetHandlePointer(i);
+ if(!h)
+ {
+ // todo bug: should never happen
+ }
+ if(!h->inUse)
+ {
+ memset(h,0,sizeof(yaffsfs_Handle));
+ h->inUse=1;
+ return i;
+ }
+ }
+ return -1;
+}
+
+// yaffs_PutHandle
+// Let go of a handle (when closing a file)
+//
+static int yaffsfs_PutHandle(int handle)
+{
+ yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
+
+ if(h)
+ {
+ h->inUse = 0;
+ h->obj = NULL;
+ }
+ return 0;
+}
+
+
+
+// Stuff to search for a directory from a path
+
+
+int yaffsfs_Match(char a, char b)
+{
+ // case sensitive
+ return (a == b);
+}
+
+// yaffsfs_FindDevice
+// yaffsfs_FindRoot
+// Scan the configuration list to find the root.
+// Curveballs: Should match paths that end in '/' too
+// Curveball2 Might have "/x/ and "/x/y". Need to return the longest match
+static yaffs_Device *yaffsfs_FindDevice(const char *path, char **restOfPath)
+{
+ yaffsfs_DeviceConfiguration *cfg = yaffsfs_configurationList;
+ const char *leftOver;
+ const char *p;
+ yaffs_Device *retval = NULL;
+ int thisMatchLength;
+ int longestMatch = -1;
+
+ // Check all configs, choose the one that:
+ // 1) Actually matches a prefix (ie /a amd /abc will not match
+ // 2) Matches the longest.
+ while(cfg && cfg->prefix && cfg->dev)
+ {
+ leftOver = path;
+ p = cfg->prefix;
+ thisMatchLength = 0;
+
+ while(*p && //unmatched part of prefix
+ strcmp(p,"/") && // the rest of the prefix is not / (to catch / at end)
+ *leftOver &&
+ yaffsfs_Match(*p,*leftOver))
+ {
+ p++;
+ leftOver++;
+ thisMatchLength++;
+ }
+ if((!*p || strcmp(p,"/") == 0) && // end of prefix
+ (!*leftOver || *leftOver == '/') && // no more in this path name part
+ (thisMatchLength > longestMatch))
+ {
+ // Matched prefix
+ *restOfPath = (char *)leftOver;
+ retval = cfg->dev;
+ longestMatch = thisMatchLength;
+ }
+ cfg++;
+ }
+ return retval;
+}
+
+static yaffs_Object *yaffsfs_FindRoot(const char *path, char **restOfPath)
+{
+
+ yaffs_Device *dev;
+
+ dev= yaffsfs_FindDevice(path,restOfPath);
+ if(dev && dev->isMounted)
+ {
+ return dev->rootDir;
+ }
+ return NULL;
+}
+
+static yaffs_Object *yaffsfs_FollowLink(yaffs_Object *obj,int symDepth)
+{
+
+ while(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+ char *alias = obj->variant.symLinkVariant.alias;
+
+ if(*alias == '/')
+ {
+ // Starts with a /, need to scan from root up
+ obj = yaffsfs_FindObject(NULL,alias,symDepth++);
+ }
+ else
+ {
+ // Relative to here, so use the parent of the symlink as a start
+ obj = yaffsfs_FindObject(obj->parent,alias,symDepth++);
+ }
+ }
+ return obj;
+}
+
+
+// yaffsfs_FindDirectory
+// Parse a path to determine the directory and the name within the directory.
+//
+// eg. "/data/xx/ff" --> puts name="ff" and returns the directory "/data/xx"
+static yaffs_Object *yaffsfs_DoFindDirectory(yaffs_Object *startDir,const char *path,char **name,int symDepth)
+{
+ yaffs_Object *dir;
+ char *restOfPath;
+ char str[YAFFS_MAX_NAME_LENGTH+1];
+ int i;
+
+ if(symDepth > YAFFSFS_MAX_SYMLINK_DEREFERENCES)
+ {
+ return NULL;
+ }
+
+ if(startDir)
+ {
+ dir = startDir;
+ restOfPath = (char *)path;
+ }
+ else
+ {
+ dir = yaffsfs_FindRoot(path,&restOfPath);
+ }
+
+ while(dir)
+ {
+ // parse off /.
+ // curve ball: also throw away surplus '/'
+ // eg. "/ram/x////ff" gets treated the same as "/ram/x/ff"
+ while(*restOfPath == '/')
+ {
+ restOfPath++; // get rid of '/'
+ }
+
+ *name = restOfPath;
+ i = 0;
+
+ while(*restOfPath && *restOfPath != '/')
+ {
+ if (i < YAFFS_MAX_NAME_LENGTH)
+ {
+ str[i] = *restOfPath;
+ str[i+1] = '\0';
+ i++;
+ }
+ restOfPath++;
+ }
+
+ if(!*restOfPath)
+ {
+ // got to the end of the string
+ return dir;
+ }
+ else
+ {
+ if(strcmp(str,".") == 0)
+ {
+ // Do nothing
+ }
+ else if(strcmp(str,"..") == 0)
+ {
+ dir = dir->parent;
+ }
+ else
+ {
+ dir = yaffs_FindObjectByName(dir,str);
+
+ while(dir && dir->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+
+ dir = yaffsfs_FollowLink(dir,symDepth);
+
+ }
+
+ if(dir && dir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ dir = NULL;
+ }
+ }
+ }
+ }
+ // directory did not exist.
+ return NULL;
+}
+
+static yaffs_Object *yaffsfs_FindDirectory(yaffs_Object *relativeDirectory,const char *path,char **name,int symDepth)
+{
+ return yaffsfs_DoFindDirectory(relativeDirectory,path,name,symDepth);
+}
+
+// yaffsfs_FindObject turns a path for an existing object into the object
+//
+static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const char *path,int symDepth)
+{
+ yaffs_Object *dir;
+ char *name;
+
+ dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth);
+
+ if(dir && *name)
+ {
+ return yaffs_FindObjectByName(dir,name);
+ }
+
+ return dir;
+}
+
+
+
+int yaffs_open(const char *path, int oflag, int mode)
+{
+ yaffs_Object *obj = NULL;
+ yaffs_Object *dir = NULL;
+ char *name;
+ int handle = -1;
+ yaffsfs_Handle *h = NULL;
+ int alreadyOpen = 0;
+ int alreadyExclusive = 0;
+ int openDenied = 0;
+ int symDepth = 0;
+ int errorReported = 0;
+
+ int i;
+
+
+ // todo sanity check oflag (eg. can't have O_TRUNC without WRONLY or RDWR
+
+
+ yaffsfs_Lock();
+
+ handle = yaffsfs_GetHandle();
+
+ if(handle >= 0)
+ {
+
+ h = yaffsfs_GetHandlePointer(handle);
+
+
+ // try to find the exisiting object
+ obj = yaffsfs_FindObject(NULL,path,0);
+
+ if(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+
+ obj = yaffsfs_FollowLink(obj,symDepth++);
+ }
+
+ if(obj)
+ {
+ // Check if the object is already in use
+ alreadyOpen = alreadyExclusive = 0;
+
+ for(i = 0; i <= YAFFSFS_N_HANDLES; i++)
+ {
+
+ if(i != handle &&
+ yaffsfs_handle[i].inUse &&
+ obj == yaffsfs_handle[i].obj)
+ {
+ alreadyOpen = 1;
+ if(yaffsfs_handle[i].exclusive)
+ {
+ alreadyExclusive = 1;
+ }
+ }
+ }
+
+ if(((oflag & O_EXCL) && alreadyOpen) || alreadyExclusive)
+ {
+ openDenied = 1;
+ }
+
+ // Open should fail if O_CREAT and O_EXCL are specified
+ if((oflag & O_EXCL) && (oflag & O_CREAT))
+ {
+ openDenied = 1;
+ yaffsfs_SetError(-EEXIST);
+ errorReported = 1;
+ }
+
+ // Check file permissions
+ if( (oflag & (O_RDWR | O_WRONLY)) == 0 && // ie O_RDONLY
+ !(obj->yst_mode & S_IREAD))
+ {
+ openDenied = 1;
+ }
+
+ if( (oflag & O_RDWR) &&
+ !(obj->yst_mode & S_IREAD))
+ {
+ openDenied = 1;
+ }
+
+ if( (oflag & (O_RDWR | O_WRONLY)) &&
+ !(obj->yst_mode & S_IWRITE))
+ {
+ openDenied = 1;
+ }
+
+ }
+
+ else if((oflag & O_CREAT))
+ {
+ // Let's see if we can create this file
+ dir = yaffsfs_FindDirectory(NULL,path,&name,0);
+ if(dir)
+ {
+ obj = yaffs_MknodFile(dir,name,mode,0,0);
+ }
+ else
+ {
+ yaffsfs_SetError(-ENOTDIR);
+ }
+ }
+
+ if(obj && !openDenied)
+ {
+ h->obj = obj;
+ h->inUse = 1;
+ h->readOnly = (oflag & (O_WRONLY | O_RDWR)) ? 0 : 1;
+ h->append = (oflag & O_APPEND) ? 1 : 0;
+ h->exclusive = (oflag & O_EXCL) ? 1 : 0;
+ h->position = 0;
+
+ obj->inUse++;
+ if((oflag & O_TRUNC) && !h->readOnly)
+ {
+ //todo truncate
+ yaffs_ResizeFile(obj,0);
+ }
+
+ }
+ else
+ {
+ yaffsfs_PutHandle(handle);
+ if(!errorReported)
+ {
+ yaffsfs_SetError(-EACCESS);
+ errorReported = 1;
+ }
+ handle = -1;
+ }
+
+ }
+
+ yaffsfs_Unlock();
+
+ return handle;
+}
+
+int yaffs_close(int fd)
+{
+ yaffsfs_Handle *h = NULL;
+ int retVal = 0;
+
+ yaffsfs_Lock();
+
+ h = yaffsfs_GetHandlePointer(fd);
+
+ if(h && h->inUse)
+ {
+ // clean up
+ yaffs_FlushFile(h->obj,1);
+ h->obj->inUse--;
+ if(h->obj->inUse <= 0 && h->obj->unlinked)
+ {
+ yaffs_DeleteFile(h->obj);
+ }
+ yaffsfs_PutHandle(fd);
+ retVal = 0;
+ }
+ else
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ retVal = -1;
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+int yaffs_read(int fd, void *buf, unsigned int nbyte)
+{
+ yaffsfs_Handle *h = NULL;
+ yaffs_Object *obj = NULL;
+ int pos = 0;
+ int nRead = -1;
+ int maxRead;
+
+ yaffsfs_Lock();
+ h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(!h || !obj)
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+ else if( h && obj)
+ {
+ pos= h->position;
+ if(yaffs_GetObjectFileLength(obj) > pos)
+ {
+ maxRead = yaffs_GetObjectFileLength(obj) - pos;
+ }
+ else
+ {
+ maxRead = 0;
+ }
+
+ if(nbyte > maxRead)
+ {
+ nbyte = maxRead;
+ }
+
+
+ if(nbyte > 0)
+ {
+ nRead = yaffs_ReadDataFromFile(obj,buf,pos,nbyte);
+ if(nRead >= 0)
+ {
+ h->position = pos + nRead;
+ }
+ else
+ {
+ //todo error
+ }
+ }
+ else
+ {
+ nRead = 0;
+ }
+
+ }
+
+ yaffsfs_Unlock();
+
+
+ return (nRead >= 0) ? nRead : -1;
+
+}
+
+int yaffs_write(int fd, const void *buf, unsigned int nbyte)
+{
+ yaffsfs_Handle *h = NULL;
+ yaffs_Object *obj = NULL;
+ int pos = 0;
+ int nWritten = -1;
+ int writeThrough = 0;
+
+ yaffsfs_Lock();
+ h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(!h || !obj)
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+ else if( h && obj && h->readOnly)
+ {
+ // todo error
+ }
+ else if( h && obj)
+ {
+ if(h->append)
+ {
+ pos = yaffs_GetObjectFileLength(obj);
+ }
+ else
+ {
+ pos = h->position;
+ }
+
+ nWritten = yaffs_WriteDataToFile(obj,buf,pos,nbyte,writeThrough);
+
+ if(nWritten >= 0)
+ {
+ h->position = pos + nWritten;
+ }
+ else
+ {
+ //todo error
+ }
+
+ }
+
+ yaffsfs_Unlock();
+
+
+ return (nWritten >= 0) ? nWritten : -1;
+
+}
+
+int yaffs_truncate(int fd, off_t newSize)
+{
+ yaffsfs_Handle *h = NULL;
+ yaffs_Object *obj = NULL;
+ int result = 0;
+
+ yaffsfs_Lock();
+ h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(!h || !obj)
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+ else
+ {
+ // resize the file
+ result = yaffs_ResizeFile(obj,newSize);
+ }
+ yaffsfs_Unlock();
+
+
+ return (result) ? 0 : -1;
+
+}
+
+off_t yaffs_lseek(int fd, off_t offset, int whence)
+{
+ yaffsfs_Handle *h = NULL;
+ yaffs_Object *obj = NULL;
+ int pos = -1;
+ int fSize = -1;
+
+ yaffsfs_Lock();
+ h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(!h || !obj)
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+ else if(whence == SEEK_SET)
+ {
+ if(offset >= 0)
+ {
+ pos = offset;
+ }
+ }
+ else if(whence == SEEK_CUR)
+ {
+ if( (h->position + offset) >= 0)
+ {
+ pos = (h->position + offset);
+ }
+ }
+ else if(whence == SEEK_END)
+ {
+ fSize = yaffs_GetObjectFileLength(obj);
+ if(fSize >= 0 && (fSize + offset) >= 0)
+ {
+ pos = fSize + offset;
+ }
+ }
+
+ if(pos >= 0)
+ {
+ h->position = pos;
+ }
+ else
+ {
+ // todo error
+ }
+
+
+ yaffsfs_Unlock();
+
+ return pos;
+}
+
+
+int yaffsfs_DoUnlink(const char *path,int isDirectory)
+{
+ yaffs_Object *dir = NULL;
+ yaffs_Object *obj = NULL;
+ char *name;
+ int result = YAFFS_FAIL;
+
+ yaffsfs_Lock();
+
+ obj = yaffsfs_FindObject(NULL,path,0);
+ dir = yaffsfs_FindDirectory(NULL,path,&name,0);
+ if(!dir)
+ {
+ yaffsfs_SetError(-ENOTDIR);
+ }
+ else if(!obj)
+ {
+ yaffsfs_SetError(-ENOENT);
+ }
+ else if(!isDirectory && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ yaffsfs_SetError(-EISDIR);
+ }
+ else if(isDirectory && obj->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ yaffsfs_SetError(-ENOTDIR);
+ }
+ else
+ {
+ result = yaffs_Unlink(dir,name);
+
+ if(result == YAFFS_FAIL && isDirectory)
+ {
+ yaffsfs_SetError(-ENOTEMPTY);
+ }
+ }
+
+ yaffsfs_Unlock();
+
+ // todo error
+
+ return (result == YAFFS_FAIL) ? -1 : 0;
+}
+int yaffs_rmdir(const char *path)
+{
+ return yaffsfs_DoUnlink(path,1);
+}
+
+int yaffs_unlink(const char *path)
+{
+ return yaffsfs_DoUnlink(path,0);
+}
+
+int yaffs_rename(const char *oldPath, const char *newPath)
+{
+ yaffs_Object *olddir = NULL;
+ yaffs_Object *newdir = NULL;
+ yaffs_Object *obj = NULL;
+ char *oldname;
+ char *newname;
+ int result= YAFFS_FAIL;
+ int renameAllowed = 1;
+
+ yaffsfs_Lock();
+
+ olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0);
+ newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0);
+ obj = yaffsfs_FindObject(NULL,oldPath,0);
+
+ if(!olddir || !newdir || !obj)
+ {
+ // bad file
+ yaffsfs_SetError(-EBADF);
+ renameAllowed = 0;
+ }
+ else if(olddir->myDev != newdir->myDev)
+ {
+ // oops must be on same device
+ // todo error
+ yaffsfs_SetError(-EXDEV);
+ renameAllowed = 0;
+ }
+ else if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ // It is a directory, check that it is not being renamed to
+ // being its own decendent.
+ // Do this by tracing from the new directory back to the root, checking for obj
+
+ yaffs_Object *xx = newdir;
+
+ while( renameAllowed && xx)
+ {
+ if(xx == obj)
+ {
+ renameAllowed = 0;
+ }
+ xx = xx->parent;
+ }
+ if(!renameAllowed) yaffsfs_SetError(-EACCESS);
+ }
+
+ if(renameAllowed)
+ {
+ result = yaffs_RenameObject(olddir,oldname,newdir,newname);
+ }
+
+ yaffsfs_Unlock();
+
+ return (result == YAFFS_FAIL) ? -1 : 0;
+}
+
+
+static int yaffsfs_DoStat(yaffs_Object *obj,struct yaffs_stat *buf)
+{
+ int retVal = -1;
+
+ if(obj)
+ {
+ obj = yaffs_GetEquivalentObject(obj);
+ }
+
+ if(obj && buf)
+ {
+ buf->st_dev = (int)obj->myDev->genericDevice;
+ buf->st_ino = obj->objectId;
+ buf->st_mode = obj->yst_mode & ~S_IFMT; // clear out file type bits
+
+ if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ buf->st_mode |= S_IFDIR;
+ }
+ else if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+ buf->st_mode |= S_IFLNK;
+ }
+ else if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+ {
+ buf->st_mode |= S_IFREG;
+ }
+
+ buf->st_nlink = yaffs_GetObjectLinkCount(obj);
+ buf->st_uid = 0;
+ buf->st_gid = 0;;
+ buf->st_rdev = obj->yst_rdev;
+ buf->st_size = yaffs_GetObjectFileLength(obj);
+ buf->st_blksize = obj->myDev->nDataBytesPerChunk;
+ buf->st_blocks = (buf->st_size + buf->st_blksize -1)/buf->st_blksize;
+ buf->yst_atime = obj->yst_atime;
+ buf->yst_ctime = obj->yst_ctime;
+ buf->yst_mtime = obj->yst_mtime;
+ retVal = 0;
+ }
+ return retVal;
+}
+
+static int yaffsfs_DoStatOrLStat(const char *path, struct yaffs_stat *buf,int doLStat)
+{
+ yaffs_Object *obj;
+
+ int retVal = -1;
+
+ yaffsfs_Lock();
+ obj = yaffsfs_FindObject(NULL,path,0);
+
+ if(!doLStat && obj)
+ {
+ obj = yaffsfs_FollowLink(obj,0);
+ }
+
+ if(obj)
+ {
+ retVal = yaffsfs_DoStat(obj,buf);
+ }
+ else
+ {
+ // todo error not found
+ yaffsfs_SetError(-ENOENT);
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+
+}
+
+int yaffs_stat(const char *path, struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat(path,buf,0);
+}
+
+int yaffs_lstat(const char *path, struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat(path,buf,1);
+}
+
+int yaffs_fstat(int fd, struct yaffs_stat *buf)
+{
+ yaffs_Object *obj;
+
+ int retVal = -1;
+
+ yaffsfs_Lock();
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(obj)
+ {
+ retVal = yaffsfs_DoStat(obj,buf);
+ }
+ else
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+static int yaffsfs_DoChMod(yaffs_Object *obj,mode_t mode)
+{
+ int result = YAFFS_FAIL;
+
+ if(obj)
+ {
+ obj = yaffs_GetEquivalentObject(obj);
+ }
+
+ if(obj)
+ {
+ obj->yst_mode = mode;
+ obj->dirty = 1;
+ result = yaffs_FlushFile(obj,0);
+ }
+
+ return result == YAFFS_OK ? 0 : -1;
+}
+
+
+int yaffs_chmod(const char *path, mode_t mode)
+{
+ yaffs_Object *obj;
+
+ int retVal = -1;
+
+ yaffsfs_Lock();
+ obj = yaffsfs_FindObject(NULL,path,0);
+
+ if(obj)
+ {
+ retVal = yaffsfs_DoChMod(obj,mode);
+ }
+ else
+ {
+ // todo error not found
+ yaffsfs_SetError(-ENOENT);
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+
+}
+
+
+int yaffs_fchmod(int fd, mode_t mode)
+{
+ yaffs_Object *obj;
+
+ int retVal = -1;
+
+ yaffsfs_Lock();
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(obj)
+ {
+ retVal = yaffsfs_DoChMod(obj,mode);
+ }
+ else
+ {
+ // bad handle
+ yaffsfs_SetError(-EBADF);
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+
+int yaffs_mkdir(const char *path, mode_t mode)
+{
+ yaffs_Object *parent = NULL;
+ yaffs_Object *dir = NULL;
+ char *name;
+ int retVal= -1;
+
+ yaffsfs_Lock();
+ parent = yaffsfs_FindDirectory(NULL,path,&name,0);
+ if(parent)
+ dir = yaffs_MknodDirectory(parent,name,mode,0,0);
+ if(dir)
+ {
+ retVal = 0;
+ }
+ else
+ {
+ yaffsfs_SetError(-ENOSPC); // just assume no space for now
+ retVal = -1;
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+int yaffs_mount(const char *path)
+{
+ int retVal=-1;
+ int result=YAFFS_FAIL;
+ yaffs_Device *dev=NULL;
+ char *dummy;
+
+ T(YAFFS_TRACE_ALWAYS,("yaffs: Mounting %s\n",path));
+
+ yaffsfs_Lock();
+ dev = yaffsfs_FindDevice(path,&dummy);
+ if(dev)
+ {
+ if(!dev->isMounted)
+ {
+ result = yaffs_GutsInitialise(dev);
+ if(result == YAFFS_FAIL)
+ {
+ // todo error - mount failed
+ yaffsfs_SetError(-ENOMEM);
+ }
+ retVal = result ? 0 : -1;
+
+ }
+ else
+ {
+ //todo error - already mounted.
+ yaffsfs_SetError(-EBUSY);
+ }
+ }
+ else
+ {
+ // todo error - no device
+ yaffsfs_SetError(-ENODEV);
+ }
+ yaffsfs_Unlock();
+ return retVal;
+
+}
+
+int yaffs_unmount(const char *path)
+{
+ int retVal=-1;
+ yaffs_Device *dev=NULL;
+ char *dummy;
+
+ yaffsfs_Lock();
+ dev = yaffsfs_FindDevice(path,&dummy);
+ if(dev)
+ {
+ if(dev->isMounted)
+ {
+ int i;
+ int inUse;
+
+ yaffs_FlushEntireDeviceCache(dev);
+ yaffs_CheckpointSave(dev);
+
+ for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse; i++)
+ {
+ if(yaffsfs_handle[i].inUse && yaffsfs_handle[i].obj->myDev == dev)
+ {
+ inUse = 1; // the device is in use, can't unmount
+ }
+ }
+
+ if(!inUse)
+ {
+ yaffs_Deinitialise(dev);
+
+ retVal = 0;
+ }
+ else
+ {
+ // todo error can't unmount as files are open
+ yaffsfs_SetError(-EBUSY);
+ }
+
+ }
+ else
+ {
+ //todo error - not mounted.
+ yaffsfs_SetError(-EINVAL);
+
+ }
+ }
+ else
+ {
+ // todo error - no device
+ yaffsfs_SetError(-ENODEV);
+ }
+ yaffsfs_Unlock();
+ return retVal;
+
+}
+
+loff_t yaffs_freespace(const char *path)
+{
+ loff_t retVal=-1;
+ yaffs_Device *dev=NULL;
+ char *dummy;
+
+ yaffsfs_Lock();
+ dev = yaffsfs_FindDevice(path,&dummy);
+ if(dev && dev->isMounted)
+ {
+ retVal = yaffs_GetNumberOfFreeChunks(dev);
+ retVal *= dev->nDataBytesPerChunk;
+
+ }
+ else
+ {
+ yaffsfs_SetError(-EINVAL);
+ }
+
+ yaffsfs_Unlock();
+ return retVal;
+}
+
+
+
+void yaffs_initialise(yaffsfs_DeviceConfiguration *cfgList)
+{
+
+ yaffsfs_DeviceConfiguration *cfg;
+
+ yaffsfs_configurationList = cfgList;
+
+ yaffsfs_InitHandles();
+
+ cfg = yaffsfs_configurationList;
+
+ while(cfg && cfg->prefix && cfg->dev)
+ {
+ cfg->dev->isMounted = 0;
+ cfg->dev->removeObjectCallback = yaffsfs_RemoveObjectCallback;
+ cfg++;
+ }
+}
+
+
+//
+// Directory search stuff.
+
+//
+// Directory search context
+//
+// NB this is an opaque structure.
+
+
+typedef struct
+{
+ __u32 magic;
+ yaffs_dirent de; /* directory entry being used by this dsc */
+ char name[NAME_MAX+1]; /* name of directory being searched */
+ yaffs_Object *dirObj; /* ptr to directory being searched */
+ yaffs_Object *nextReturn; /* obj to be returned by next readddir */
+ int offset;
+ struct list_head others;
+} yaffsfs_DirectorySearchContext;
+
+
+
+static struct list_head search_contexts;
+
+
+static void yaffsfs_SetDirRewound(yaffsfs_DirectorySearchContext *dsc)
+{
+ if(dsc &&
+ dsc->dirObj &&
+ dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
+
+ dsc->offset = 0;
+
+ if( list_empty(&dsc->dirObj->variant.directoryVariant.children)){
+ dsc->nextReturn = NULL;
+ } else {
+ dsc->nextReturn = list_entry(dsc->dirObj->variant.directoryVariant.children.next,
+ yaffs_Object,siblings);
+ }
+ } else {
+ /* Hey someone isn't playing nice! */
+ }
+}
+
+static void yaffsfs_DirAdvance(yaffsfs_DirectorySearchContext *dsc)
+{
+ if(dsc &&
+ dsc->dirObj &&
+ dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
+
+ if( dsc->nextReturn == NULL ||
+ list_empty(&dsc->dirObj->variant.directoryVariant.children)){
+ dsc->nextReturn = NULL;
+ } else {
+ struct list_head *next = dsc->nextReturn->siblings.next;
+
+ if( next == &dsc->dirObj->variant.directoryVariant.children)
+ dsc->nextReturn = NULL; /* end of list */
+ else
+ dsc->nextReturn = list_entry(next,yaffs_Object,siblings);
+ }
+ } else {
+ /* Hey someone isn't playing nice! */
+ }
+}
+
+static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj)
+{
+
+ struct list_head *i;
+ yaffsfs_DirectorySearchContext *dsc;
+
+ /* if search contexts not initilised then skip */
+ if(!search_contexts.next)
+ return;
+
+ /* Iteratethrough the directory search contexts.
+ * If any are the one being removed, then advance the dsc to
+ * the next one to prevent a hanging ptr.
+ */
+ list_for_each(i, &search_contexts) {
+ if (i) {
+ dsc = list_entry(i, yaffsfs_DirectorySearchContext,others);
+ if(dsc->nextReturn == obj)
+ yaffsfs_DirAdvance(dsc);
+ }
+ }
+
+}
+
+yaffs_DIR *yaffs_opendir(const char *dirname)
+{
+ yaffs_DIR *dir = NULL;
+ yaffs_Object *obj = NULL;
+ yaffsfs_DirectorySearchContext *dsc = NULL;
+
+ yaffsfs_Lock();
+
+ obj = yaffsfs_FindObject(NULL,dirname,0);
+
+ if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+
+ dsc = YMALLOC(sizeof(yaffsfs_DirectorySearchContext));
+ dir = (yaffs_DIR *)dsc;
+ if(dsc)
+ {
+ memset(dsc,0,sizeof(yaffsfs_DirectorySearchContext));
+ dsc->magic = YAFFS_MAGIC;
+ dsc->dirObj = obj;
+ strncpy(dsc->name,dirname,NAME_MAX);
+ INIT_LIST_HEAD(&dsc->others);
+
+ if(!search_contexts.next)
+ INIT_LIST_HEAD(&search_contexts);
+
+ list_add(&dsc->others,&search_contexts);
+ yaffsfs_SetDirRewound(dsc); }
+
+ }
+
+ yaffsfs_Unlock();
+
+ return dir;
+}
+
+struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp)
+{
+ yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+ struct yaffs_dirent *retVal = NULL;
+
+ yaffsfs_Lock();
+
+ if(dsc && dsc->magic == YAFFS_MAGIC){
+ yaffsfs_SetError(0);
+ if(dsc->nextReturn){
+ dsc->de.d_ino = yaffs_GetEquivalentObject(dsc->nextReturn)->objectId;
+ dsc->de.d_dont_use = (unsigned)dsc->nextReturn;
+ dsc->de.d_off = dsc->offset++;
+ yaffs_GetObjectName(dsc->nextReturn,dsc->de.d_name,NAME_MAX);
+ if(strlen(dsc->de.d_name) == 0)
+ {
+ // this should not happen!
+ strcpy(dsc->de.d_name,"zz");
+ }
+ dsc->de.d_reclen = sizeof(struct yaffs_dirent);
+ retVal = &dsc->de;
+ yaffsfs_DirAdvance(dsc);
+ } else
+ retVal = NULL;
+ }
+ else
+ {
+ yaffsfs_SetError(-EBADF);
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+
+}
+
+
+void yaffs_rewinddir(yaffs_DIR *dirp)
+{
+ yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+
+ yaffsfs_Lock();
+
+ yaffsfs_SetDirRewound(dsc);
+
+ yaffsfs_Unlock();
+}
+
+
+int yaffs_closedir(yaffs_DIR *dirp)
+{
+ yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+
+ yaffsfs_Lock();
+ dsc->magic = 0;
+ list_del(&dsc->others); /* unhook from list */
+ YFREE(dsc);
+ yaffsfs_Unlock();
+ return 0;
+}
+
+// end of directory stuff
+
+
+int yaffs_symlink(const char *oldpath, const char *newpath)
+{
+ yaffs_Object *parent = NULL;
+ yaffs_Object *obj;
+ char *name;
+ int retVal= -1;
+ int mode = 0; // ignore for now
+
+ yaffsfs_Lock();
+ parent = yaffsfs_FindDirectory(NULL,newpath,&name,0);
+ obj = yaffs_MknodSymLink(parent,name,mode,0,0,oldpath);
+ if(obj)
+ {
+ retVal = 0;
+ }
+ else
+ {
+ yaffsfs_SetError(-ENOSPC); // just assume no space for now
+ retVal = -1;
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+
+}
+
+int yaffs_readlink(const char *path, char *buf, int bufsiz)
+{
+ yaffs_Object *obj = NULL;
+ int retVal;
+
+
+ yaffsfs_Lock();
+
+ obj = yaffsfs_FindObject(NULL,path,0);
+
+ if(!obj)
+ {
+ yaffsfs_SetError(-ENOENT);
+ retVal = -1;
+ }
+ else if(obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+ yaffsfs_SetError(-EINVAL);
+ retVal = -1;
+ }
+ else
+ {
+ char *alias = obj->variant.symLinkVariant.alias;
+ memset(buf,0,bufsiz);
+ strncpy(buf,alias,bufsiz - 1);
+ retVal = 0;
+ }
+ yaffsfs_Unlock();
+ return retVal;
+}
+
+int yaffs_link(const char *oldpath, const char *newpath)
+{
+ // Creates a link called newpath to existing oldpath
+ yaffs_Object *obj = NULL;
+ yaffs_Object *target = NULL;
+ int retVal = 0;
+
+
+ yaffsfs_Lock();
+
+ obj = yaffsfs_FindObject(NULL,oldpath,0);
+ target = yaffsfs_FindObject(NULL,newpath,0);
+
+ if(!obj)
+ {
+ yaffsfs_SetError(-ENOENT);
+ retVal = -1;
+ }
+ else if(target)
+ {
+ yaffsfs_SetError(-EEXIST);
+ retVal = -1;
+ }
+ else
+ {
+ yaffs_Object *newdir = NULL;
+ yaffs_Object *link = NULL;
+
+ char *newname;
+
+ newdir = yaffsfs_FindDirectory(NULL,newpath,&newname,0);
+
+ if(!newdir)
+ {
+ yaffsfs_SetError(-ENOTDIR);
+ retVal = -1;
+ }
+ else if(newdir->myDev != obj->myDev)
+ {
+ yaffsfs_SetError(-EXDEV);
+ retVal = -1;
+ }
+ if(newdir && strlen(newname) > 0)
+ {
+ link = yaffs_Link(newdir,newname,obj);
+ if(link)
+ retVal = 0;
+ else
+ {
+ yaffsfs_SetError(-ENOSPC);
+ retVal = -1;
+ }
+
+ }
+ }
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+int yaffs_mknod(const char *pathname, mode_t mode, dev_t dev);
+
+int yaffs_DumpDevStruct(const char *path)
+{
+ char *rest;
+
+ yaffs_Object *obj = yaffsfs_FindRoot(path,&rest);
+
+ if(obj)
+ {
+ yaffs_Device *dev = obj->myDev;
+
+ printf("\n"
+ "nPageWrites.......... %d\n"
+ "nPageReads........... %d\n"
+ "nBlockErasures....... %d\n"
+ "nGCCopies............ %d\n"
+ "garbageCollections... %d\n"
+ "passiveGarbageColl'ns %d\n"
+ "\n",
+ dev->nPageWrites,
+ dev->nPageReads,
+ dev->nBlockErasures,
+ dev->nGCCopies,
+ dev->garbageCollections,
+ dev->passiveGarbageCollections
+ );
+
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * Header file for using yaffs in an application via
+ * a direct interface.
+ */
+
+
+#ifndef __YAFFSFS_H__
+#define __YAFFSFS_H__
+
+#include "yaffscfg.h"
+#include "yportenv.h"
+
+
+//typedef long off_t;
+//typedef long dev_t;
+//typedef unsigned long mode_t;
+
+
+#ifndef NAME_MAX
+#define NAME_MAX 256
+#endif
+
+#ifndef O_RDONLY
+#define O_RDONLY 00
+#endif
+
+#ifndef O_WRONLY
+#define O_WRONLY 01
+#endif
+
+#ifndef O_RDWR
+#define O_RDWR 02
+#endif
+
+#ifndef O_CREAT
+#define O_CREAT 0100
+#endif
+
+#ifndef O_EXCL
+#define O_EXCL 0200
+#endif
+
+#ifndef O_TRUNC
+#define O_TRUNC 01000
+#endif
+
+#ifndef O_APPEND
+#define O_APPEND 02000
+#endif
+
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+
+#ifndef SEEK_CUR
+#define SEEK_CUR 1
+#endif
+
+#ifndef SEEK_END
+#define SEEK_END 2
+#endif
+
+#ifndef EBUSY
+#define EBUSY 16
+#endif
+
+#ifndef ENODEV
+#define ENODEV 19
+#endif
+
+#ifndef EINVAL
+#define EINVAL 22
+#endif
+
+#ifndef EBADF
+#define EBADF 9
+#endif
+
+#ifndef EACCESS
+#define EACCESS 13
+#endif
+
+#ifndef EXDEV
+#define EXDEV 18
+#endif
+
+#ifndef ENOENT
+#define ENOENT 2
+#endif
+
+#ifndef ENOSPC
+#define ENOSPC 28
+#endif
+
+#ifndef ENOTEMPTY
+#define ENOTEMPTY 39
+#endif
+
+#ifndef ENOMEM
+#define ENOMEM 12
+#endif
+
+#ifndef EEXIST
+#define EEXIST 17
+#endif
+
+#ifndef ENOTDIR
+#define ENOTDIR 20
+#endif
+
+#ifndef EISDIR
+#define EISDIR 21
+#endif
+
+
+// Mode flags
+
+#ifndef S_IFMT
+#define S_IFMT 0170000
+#endif
+
+#ifndef S_IFLNK
+#define S_IFLNK 0120000
+#endif
+
+#ifndef S_IFDIR
+#define S_IFDIR 0040000
+#endif
+
+#ifndef S_IFREG
+#define S_IFREG 0100000
+#endif
+
+#ifndef S_IREAD
+#define S_IREAD 0000400
+#endif
+
+#ifndef S_IWRITE
+#define S_IWRITE 0000200
+#endif
+
+
+
+
+struct yaffs_dirent{
+ long d_ino; /* inode number */
+ off_t d_off; /* offset to this dirent */
+ unsigned short d_reclen; /* length of this d_name */
+ char d_name [NAME_MAX+1]; /* file name (null-terminated) */
+ unsigned d_dont_use; /* debug pointer, not for public consumption */
+};
+
+typedef struct yaffs_dirent yaffs_dirent;
+
+
+typedef struct __opaque yaffs_DIR;
+
+
+
+struct yaffs_stat{
+ int st_dev; /* device */
+ int st_ino; /* inode */
+ mode_t st_mode; /* protection */
+ int st_nlink; /* number of hard links */
+ int st_uid; /* user ID of owner */
+ int st_gid; /* group ID of owner */
+ unsigned st_rdev; /* device type (if inode device) */
+ off_t st_size; /* total size, in bytes */
+ unsigned long st_blksize; /* blocksize for filesystem I/O */
+ unsigned long st_blocks; /* number of blocks allocated */
+ unsigned long yst_atime; /* time of last access */
+ unsigned long yst_mtime; /* time of last modification */
+ unsigned long yst_ctime; /* time of last change */
+};
+
+int yaffs_open(const char *path, int oflag, int mode) ;
+int yaffs_read(int fd, void *buf, unsigned int nbyte) ;
+int yaffs_write(int fd, const void *buf, unsigned int nbyte) ;
+int yaffs_close(int fd) ;
+off_t yaffs_lseek(int fd, off_t offset, int whence) ;
+int yaffs_truncate(int fd, off_t newSize);
+
+int yaffs_unlink(const char *path) ;
+int yaffs_rename(const char *oldPath, const char *newPath) ;
+
+int yaffs_stat(const char *path, struct yaffs_stat *buf) ;
+int yaffs_lstat(const char *path, struct yaffs_stat *buf) ;
+int yaffs_fstat(int fd, struct yaffs_stat *buf) ;
+
+int yaffs_chmod(const char *path, mode_t mode);
+int yaffs_fchmod(int fd, mode_t mode);
+
+int yaffs_mkdir(const char *path, mode_t mode) ;
+int yaffs_rmdir(const char *path) ;
+
+yaffs_DIR *yaffs_opendir(const char *dirname) ;
+struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp) ;
+void yaffs_rewinddir(yaffs_DIR *dirp) ;
+int yaffs_closedir(yaffs_DIR *dirp) ;
+
+int yaffs_mount(const char *path) ;
+int yaffs_unmount(const char *path) ;
+
+int yaffs_symlink(const char *oldpath, const char *newpath);
+int yaffs_readlink(const char *path, char *buf, int bufsiz);
+
+int yaffs_link(const char *oldpath, const char *newpath);
+int yaffs_mknod(const char *pathname, mode_t mode, dev_t dev);
+
+loff_t yaffs_freespace(const char *path);
+
+void yaffs_initialise(yaffsfs_DeviceConfiguration *configList);
+
+int yaffs_StartUp(void);
+
+#endif
+
+
--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * ydirectenv.h: Environment wrappers for YAFFS direct.
+ */
+
+#ifndef __YDIRECTENV_H__
+#define __YDIRECTENV_H__
+
+// Direct interface
+
+#include "devextras.h"
+
+/* XXX U-BOOT XXX */
+#if 0
+#include "stdlib.h"
+#include "stdio.h"
+#include "string.h"
+#include "assert.h"
+#endif
+#include "yaffs_malloc.h"
+
+/* XXX U-BOOT XXX */
+#if 0
+#define YBUG() assert(1)
+#endif
+
+#define YCHAR char
+#define YUCHAR unsigned char
+#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)
+
+#ifdef NO_Y_INLINE
+#define Y_INLINE
+#else
+#define Y_INLINE inline
+#endif
+
+#define YMALLOC(x) yaffs_malloc(x)
+#define YFREE(x) free(x)
+#define YMALLOC_ALT(x) yaffs_malloc(x)
+#define YFREE_ALT(x) free(x)
+
+#define YMALLOC_DMA(x) yaffs_malloc(x)
+
+#define YYIELD() do {} while(0)
+
+
+
+//#define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s))
+//#define YALERT(s) YINFO(s)
+
+
+#define TENDSTR "\n"
+#define TSTR(x) x
+#define TOUT(p) printf p
+
+
+#define YAFFS_LOSTNFOUND_NAME "lost+found"
+#define YAFFS_LOSTNFOUND_PREFIX "obj"
+//#define YPRINTF(x) printf x
+
+#include "yaffscfg.h"
+
+#define Y_CURRENT_TIME yaffsfs_CurrentTime()
+#define Y_TIME_CONVERT(x) x
+
+#define YAFFS_ROOT_MODE 0666
+#define YAFFS_LOSTNFOUND_MODE 0666
+
+#define yaffs_SumCompare(x,y) ((x) == (y))
+#define yaffs_strcmp(a,b) strcmp(a,b)
+
+#endif
+
+
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