/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- * yaffs_fs.c
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002-2007 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
+ * Acknowledgements:
+ * Luc van OostenRyck for numerous patches.
+ * Nick Bane for numerous patches.
+ * Nick Bane for 2.5/2.6 integration.
+ * Andras Toth for mknod rdev issue.
+ * Michael Fischer for finding the problem with inode inconsistency.
+ * Some code bodily lifted from JFFS
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
+ */
+
+/*
*
* This is the file system front-end to YAFFS that hooks it up to
* the VFS.
* >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this
* superblock
* >> inode->u.generic_ip points to the associated yaffs_Object.
- *
- * Acknowledgements:
- * * Luc van OostenRyck for numerous patches.
- * * Nick Bane for numerous patches.
- * * Nick Bane for 2.5/2.6 integration.
- * * Andras Toth for mknod rdev issue.
- * * Michael Fischer for finding the problem with inode inconsistency.
- * * Some code bodily lifted from JFFS2.
*/
const char *yaffs_fs_c_version =
- "$Id: yaffs_fs.c,v 1.51 2006-07-25 21:03:22 charles Exp $";
+ "$Id: yaffs_fs.c,v 1.58 2007-02-14 01:09:06 wookey Exp $";
extern const char *yaffs_guts_c_version;
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
#include <linux/config.h>
+#endif
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/version.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/list.h>
/*#define T(x) printk x */
-#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private
+#else
+#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip
+#endif
+
+#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr)))
#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
loff_t * pos);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_file_flush(struct file *file, fl_owner_t id);
+#else
static int yaffs_file_flush(struct file *file);
+#endif
static int yaffs_sync_object(struct file *file, struct dentry *dentry,
int datasync);
struct inode *new_dir, struct dentry *new_dentry);
static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_sync_fs(struct super_block *sb, int wait);
+static void yaffs_write_super(struct super_block *sb);
+#else
static int yaffs_sync_fs(struct super_block *sb);
static int yaffs_write_super(struct super_block *sb);
+#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
#else
static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
};
static struct file_operations yaffs_file_operations = {
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+#else
.read = generic_file_read,
.write = generic_file_write,
+#endif
.mmap = generic_file_mmap,
.flush = yaffs_file_flush,
.fsync = yaffs_sync_object,
* the yaffs_Object.
*/
obj->myInode = NULL;
- inode->u.generic_ip = NULL;
+ yaffs_InodeToObjectLV(inode) = NULL;
/* If the object freeing was deferred, then the real
* free happens now.
clear_inode(inode);
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_file_flush(struct file *file, fl_owner_t id)
+#else
static int yaffs_file_flush(struct file *file)
+#endif
{
yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry);
inode->i_mode = obj->yst_mode;
inode->i_uid = obj->yst_uid;
inode->i_gid = obj->yst_gid;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
inode->i_blksize = inode->i_sb->s_blocksize;
+#endif
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
inode->i_rdev = old_decode_dev(obj->yst_rdev);
break;
}
- inode->u.generic_ip = obj;
+ yaffs_InodeToObjectLV(inode) = obj;
+
obj->myInode = inode;
} else {
return error;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+ struct super_block *sb = dentry->d_sb;
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+{
+ yaffs_Device *dev = yaffs_SuperToDevice(sb);
#else
static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
-#endif
{
-
yaffs_Device *dev = yaffs_SuperToDevice(sb);
+#endif
+
T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n"));
yaffs_GrossLock(dev);
buf->f_type = YAFFS_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_namelen = 255;
- if (sb->s_blocksize > dev->nBytesPerChunk) {
+ if (sb->s_blocksize > dev->nDataBytesPerChunk) {
buf->f_blocks =
(dev->endBlock - dev->startBlock +
1) * dev->nChunksPerBlock / (sb->s_blocksize /
- dev->nBytesPerChunk);
+ dev->nDataBytesPerChunk);
buf->f_bfree =
yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
- dev->nBytesPerChunk);
+ dev->nDataBytesPerChunk);
} else {
buf->f_blocks =
(dev->endBlock - dev->startBlock +
- 1) * dev->nChunksPerBlock * (dev->nBytesPerChunk /
+ 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
sb->s_blocksize);
buf->f_bfree =
- yaffs_GetNumberOfFreeChunks(dev) * (dev->nBytesPerChunk /
+ yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
sb->s_blocksize);
}
buf->f_files = 0;
}
-
+/**
static int yaffs_do_sync_fs(struct super_block *sb)
{
}
return 0;
}
+**/
-
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static void yaffs_write_super(struct super_block *sb)
+#else
static int yaffs_write_super(struct super_block *sb)
+#endif
{
T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
return 0; /* yaffs_do_sync_fs(sb);*/
-
+#endif
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_sync_fs(struct super_block *sb, int wait)
+#else
static int yaffs_sync_fs(struct super_block *sb)
+#endif
{
T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob));
T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad));
T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad));
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ T(YAFFS_TRACE_OS, (" writesize %d\n", mtd->writesize));
+#else
T(YAFFS_TRACE_OS, (" oobblock %d\n", mtd->oobblock));
+#endif
T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
T(YAFFS_TRACE_OS, (" size %d\n", mtd->size));
#ifdef CONFIG_YAFFS_AUTO_YAFFS2
if (yaffsVersion == 1 &&
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ mtd->writesize >= 2048) {
+#else
mtd->oobblock >= 2048) {
+#endif
T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
yaffsVersion = 2;
}
/* Added NCB 26/5/2006 for completeness */
if (yaffsVersion == 2 &&
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ mtd->writesize == 512) {
+#else
mtd->oobblock == 512) {
+#endif
T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
yaffsVersion = 1;
}
!mtd->block_markbad ||
!mtd->read ||
!mtd->write ||
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ !mtd->read_oob || !mtd->write_oob) {
+#else
!mtd->write_ecc ||
!mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+#endif
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not support required "
"functions\n"));;
return NULL;
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+#else
if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+#endif
mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not have the "
if (!mtd->erase ||
!mtd->read ||
!mtd->write ||
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ !mtd->read_oob || !mtd->write_oob) {
+#else
!mtd->write_ecc ||
!mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+#endif
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not support required "
"functions\n"));;
return NULL;
}
- if (mtd->oobblock != YAFFS_BYTES_PER_CHUNK ||
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ if (mtd->writesize < YAFFS_BYTES_PER_CHUNK ||
+#else
+ if (mtd->oobblock < YAFFS_BYTES_PER_CHUNK ||
+#endif
mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not support have the "
dev->startBlock = 0;
dev->endBlock = nBlocks - 1;
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
- dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
dev->nReservedBlocks = 5;
dev->nShortOpCaches = 10; /* Enable short op caching */
dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
dev->spareBuffer = YMALLOC(mtd->oobsize);
dev->isYaffs2 = 1;
- dev->nBytesPerChunk = mtd->oobblock;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ dev->nDataBytesPerChunk = mtd->writesize;
+ dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+#else
+ dev->nDataBytesPerChunk = mtd->oobblock;
dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+#endif
nBlocks = mtd->size / mtd->erasesize;
- dev->nCheckpointReservedBlocks = 10;
+ dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
dev->startBlock = 0;
dev->endBlock = nBlocks - 1;
} else {
return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs_read_super(struct file_system_type *fs,
+ int flags, const char *dev_name,
+ void *data, struct vfsmount *mnt)
+{
+
+ return get_sb_bdev(fs, flags, dev_name, data,
+ yaffs_internal_read_super_mtd, mnt);
+}
+#else
static struct super_block *yaffs_read_super(struct file_system_type *fs,
int flags, const char *dev_name,
void *data)
return get_sb_bdev(fs, flags, dev_name, data,
yaffs_internal_read_super_mtd);
}
+#endif
static struct file_system_type yaffs_fs_type = {
.owner = THIS_MODULE,
return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+static int yaffs2_read_super(struct file_system_type *fs,
+ int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
+{
+ return get_sb_bdev(fs, flags, dev_name, data,
+ yaffs2_internal_read_super_mtd, mnt);
+}
+#else
static struct super_block *yaffs2_read_super(struct file_system_type *fs,
int flags, const char *dev_name,
void *data)
return get_sb_bdev(fs, flags, dev_name, data,
yaffs2_internal_read_super_mtd);
}
+#endif
static struct file_system_type yaffs2_fs_type = {
.owner = THIS_MODULE,
char *end, *mask_name;
int i;
int done = 0;
- int add, len;
+ int add, len = 0;
int pos = 0;
rg = yaffs_traceMask;
}
}
- yaffs_traceMask = rg;
+ yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
+
if (rg & YAFFS_TRACE_ALWAYS) {
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
char flag;