* This is the file system front-end to YAFFS that hooks it up to
* the VFS.
*
- * Special notes:
+ * Special notes:
* >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with
* this superblock
* >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this
*/
const char *yaffs_fs_c_version =
- "$Id: yaffs_fs.c,v 1.58 2007-02-14 01:09:06 wookey Exp $";
+ "$Id: yaffs_fs.c,v 1.75 2009-03-05 01:45:28 charles Exp $";
extern const char *yaffs_guts_c_version;
#include <linux/version.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
-#include <linux/list.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
#include <linux/smp_lock.h>
#include <linux/string.h>
#include <linux/ctype.h>
+#include "asm/div64.h"
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
#include <linux/statfs.h> /* Added NCB 15-8-2003 */
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
+#define YPROC_ROOT &proc_root
+#else
+#define YPROC_ROOT NULL
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#define WRITE_SIZE_STR "writesize"
+#define WRITE_SIZE(mtd) (mtd)->writesize
+#else
+#define WRITE_SIZE_STR "oobblock"
+#define WRITE_SIZE(mtd) (mtd)->oobblock
+#endif
+
+#if(LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27))
+#define YAFFS_USE_WRITE_BEGIN_END 1
+#else
+#define YAFFS_USE_WRITE_BEGIN_END 0
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28))
+static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
+{
+ uint64_t result = partition_size;
+ do_div(result,block_size);
+ return (uint32_t)result;
+}
+#else
+#define YCALCBLOCKS(s,b) ((s)/(b))
+#endif
+
#include <asm/uaccess.h>
#include "yportenv.h"
#include "yaffs_guts.h"
-unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS |
- YAFFS_TRACE_BAD_BLOCKS |
- YAFFS_TRACE_CHECKPOINT
- /* | 0xFFFFFFFF */;
-
#include <linux/mtd/mtd.h>
#include "yaffs_mtdif.h"
+#include "yaffs_mtdif1.h"
#include "yaffs_mtdif2.h"
+unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
+unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
+unsigned int yaffs_auto_checkpoint = 1;
+
+/* Module Parameters */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+module_param(yaffs_traceMask,uint,0644);
+module_param(yaffs_wr_attempts,uint,0644);
+module_param(yaffs_auto_checkpoint,uint,0644);
+#else
+MODULE_PARM(yaffs_traceMask,"i");
+MODULE_PARM(yaffs_wr_attempts,"i");
+MODULE_PARM(yaffs_auto_checkpoint,"i");
+#endif
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
+/* use iget and read_inode */
+#define Y_IGET(sb,inum) iget((sb),(inum))
+static void yaffs_read_inode(struct inode *inode);
+
+#else
+/* Call local equivalent */
+#define YAFFS_USE_OWN_IGET
+#define Y_IGET(sb,inum) yaffs_iget((sb),(inum))
+
+static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino);
+#endif
+
/*#define T(x) printk x */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
loff_t * pos);
+static ssize_t yaffs_hold_space(struct file *f);
+static void yaffs_release_space(struct file *f);
#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_statfs(struct super_block *sb, struct statfs *buf);
#endif
-static void yaffs_read_inode(struct inode *inode);
+#ifdef YAFFS_HAS_PUT_INODE
static void yaffs_put_inode(struct inode *inode);
+#endif
+
static void yaffs_delete_inode(struct inode *);
static void yaffs_clear_inode(struct inode *);
#else
static int yaffs_writepage(struct page *page);
#endif
+
+
+#if (YAFFS_USE_WRITE_BEGIN_END != 0)
+static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata);
+static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *pg, void *fsdadata);
+#else
static int yaffs_prepare_write(struct file *f, struct page *pg,
unsigned offset, unsigned to);
static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
unsigned to);
+
+#endif
static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
int buflen);
static struct address_space_operations yaffs_file_address_operations = {
.readpage = yaffs_readpage,
.writepage = yaffs_writepage,
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+ .write_begin = yaffs_write_begin,
+ .write_end = yaffs_write_end,
+#else
.prepare_write = yaffs_prepare_write,
.commit_write = yaffs_commit_write,
+#endif
};
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
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,
+ .mmap = generic_file_mmap,
+ .flush = yaffs_file_flush,
+ .fsync = yaffs_sync_object,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ .llseek = generic_file_llseek,
+};
+
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+
+static struct file_operations yaffs_file_operations = {
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+ .mmap = generic_file_mmap,
+ .flush = yaffs_file_flush,
+ .fsync = yaffs_sync_object,
+ .sendfile = generic_file_sendfile,
+};
+
#else
+
+static struct file_operations yaffs_file_operations = {
.read = generic_file_read,
.write = generic_file_write,
-#endif
.mmap = generic_file_mmap,
.flush = yaffs_file_flush,
.fsync = yaffs_sync_object,
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
.sendfile = generic_file_sendfile,
#endif
-
};
+#endif
static struct inode_operations yaffs_file_inode_operations = {
.setattr = yaffs_setattr,
static struct super_operations yaffs_super_ops = {
.statfs = yaffs_statfs,
+
+#ifndef YAFFS_USE_OWN_IGET
.read_inode = yaffs_read_inode,
+#endif
+#ifdef YAFFS_HAS_PUT_INODE
.put_inode = yaffs_put_inode,
+#endif
.put_super = yaffs_put_super,
.delete_inode = yaffs_delete_inode,
.clear_inode = yaffs_clear_inode,
static void yaffs_GrossLock(yaffs_Device * dev)
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs locking %p\n",current));
down(&dev->grossLock);
+ T(YAFFS_TRACE_OS, ( "yaffs locked %p\n",current));
+
}
static void yaffs_GrossUnlock(yaffs_Device * dev)
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs unlocking %p\n",current));
up(&dev->grossLock);
}
yaffs_GrossLock(dev);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_lookup for %d:%s\n",
+ ( "yaffs_lookup for %d:%s\n",
yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
obj =
dentry->d_name.name);
obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */
-
+
/* Can't hold gross lock when calling yaffs_get_inode() */
yaffs_GrossUnlock(dev);
if (obj) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId));
+ ( "yaffs_lookup found %d\n", obj->objectId));
inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
if (inode) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_loookup dentry \n"));
+ ( "yaffs_loookup dentry \n"));
/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
* d_add even if NULL inode */
#if 0
}
} else {
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_lookup not found\n"));
}
}
+
+#ifdef YAFFS_HAS_PUT_INODE
+
/* For now put inode is just for debugging
* Put inode is called when the inode **structure** is put.
*/
atomic_read(&inode->i_count)));
}
+#endif
/* clear is called to tell the fs to release any per-inode data it holds */
static void yaffs_clear_inode(struct inode *inode)
if (obj) {
dev = obj->myDev;
yaffs_GrossLock(dev);
- yaffs_DeleteFile(obj);
+ yaffs_DeleteObject(obj);
yaffs_GrossUnlock(dev);
}
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
yaffs_Device *dev = obj->myDev;
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId,
+ ( "yaffs_file_flush object %d (%s)\n", obj->objectId,
obj->dirty ? "dirty" : "clean"));
yaffs_GrossLock(dev);
yaffs_Device *dev;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n",
+ T(YAFFS_TRACE_OS, ( "yaffs_readpage at %08x, size %08x\n",
(unsigned)(pg->index << PAGE_CACHE_SHIFT),
(unsigned)PAGE_CACHE_SIZE));
flush_dcache_page(pg);
kunmap(pg);
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_readpage done\n"));
return ret;
}
if (offset > inode->i_size) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG
+ (
"yaffs_writepage at %08x, inode size = %08x!!!\n",
(unsigned)(page->index << PAGE_CACHE_SHIFT),
(unsigned)inode->i_size));
T(YAFFS_TRACE_OS,
- (KERN_DEBUG " -> don't care!!\n"));
+ ( " -> don't care!!\n"));
unlock_page(page);
return 0;
}
yaffs_GrossLock(obj->myDev);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n",
+ ( "yaffs_writepage at %08x, size %08x\n",
(unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n",
+ ( "writepag0: obj = %05x, ino = %05x\n",
(int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
nWritten =
nBytes, 0);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n",
+ ( "writepag1: obj = %05x, ino = %05x\n",
(int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
yaffs_GrossUnlock(obj->myDev);
return (nWritten == nBytes) ? 0 : -ENOSPC;
}
+
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+
+{
+ struct page *pg = NULL;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ uint32_t offset = pos & (PAGE_CACHE_SIZE - 1);
+ uint32_t to = offset + len;
+
+ int ret = 0;
+ int space_held = 0;
+
+ T(YAFFS_TRACE_OS, ( "start yaffs_write_begin\n"));
+ /* Get a page */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28)
+ pg = grab_cache_page_write_begin(mapping,index,flags);
+#else
+ pg = __grab_cache_page(mapping,index);
+#endif
+
+ *pagep = pg;
+ if(!pg){
+ ret = -ENOMEM;
+ goto out;
+ }
+ /* Get fs space */
+ space_held = yaffs_hold_space(filp);
+
+ if(!space_held){
+ ret = -ENOSPC;
+ goto out;
+ }
+
+ /* Update page if required */
+
+ if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+ ret = yaffs_readpage_nolock(filp, pg);
+
+ if(ret)
+ goto out;
+
+ /* Happy path return */
+ T(YAFFS_TRACE_OS, ( "end yaffs_write_begin - ok\n"));
+
+ return 0;
+
+out:
+ T(YAFFS_TRACE_OS, ( "end yaffs_write_begin fail returning %d\n",ret));
+ if(space_held){
+ yaffs_release_space(filp);
+ }
+ if(pg) {
+ unlock_page(pg);
+ page_cache_release(pg);
+ }
+ return ret;
+}
+
+#else
+
static int yaffs_prepare_write(struct file *f, struct page *pg,
unsigned offset, unsigned to)
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_prepair_write\n"));
if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
return yaffs_readpage_nolock(f, pg);
-
return 0;
}
+#endif
+
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *pg, void *fsdadata)
+{
+ int ret = 0;
+ void *addr, *kva;
+ uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE -1);
+
+
+
+ kva=kmap(pg);
+ addr = kva + offset_into_page;
+
+ T(YAFFS_TRACE_OS,
+ ( "yaffs_write_end addr %x pos %x nBytes %d\n", (unsigned) addr,
+ (int)pos, copied));
+
+ ret = yaffs_file_write(filp, addr, copied, &pos);
+
+ if (ret != copied) {
+ T(YAFFS_TRACE_OS,
+ (
+ "yaffs_write_end not same size ret %d copied %d\n",
+ ret, copied ));
+ SetPageError(pg);
+ ClearPageUptodate(pg);
+ } else {
+ SetPageUptodate(pg);
+ }
+
+ kunmap(pg);
+
+ yaffs_release_space(filp);
+ unlock_page(pg);
+ page_cache_release(pg);
+ return ret;
+}
+#else
static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
unsigned to)
{
- void *addr = page_address(pg) + offset;
+ void *addr, *kva;
+
loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
int nBytes = to - offset;
int nWritten;
unsigned spos = pos;
- unsigned saddr = (unsigned)addr;
+ unsigned saddr;
+
+ kva=kmap(pg);
+ addr = kva + offset;
+
+ saddr = (unsigned) addr;
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
+ ( "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
spos, nBytes));
nWritten = yaffs_file_write(f, addr, nBytes, &pos);
if (nWritten != nBytes) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG
+ (
"yaffs_commit_write not same size nWritten %d nBytes %d\n",
nWritten, nBytes));
SetPageError(pg);
SetPageUptodate(pg);
}
+ kunmap(pg);
+
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_commit_write returning %d\n",
+ ( "yaffs_commit_write returning %d\n",
nWritten == nBytes ? 0 : nWritten));
return nWritten == nBytes ? 0 : nWritten;
}
+#endif
+
static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
{
obj->yst_mode &= ~S_IFMT;
obj->yst_mode |= S_IFREG;
}
-
+
break;
case YAFFS_OBJECT_TYPE_SYMLINK :
if( ! S_ISLNK(mode) ){
obj->yst_mode &= ~S_IFMT;
obj->yst_mode |= S_IFLNK;
}
-
+
break;
case YAFFS_OBJECT_TYPE_DIRECTORY :
if( ! S_ISDIR(mode) ){
obj->yst_mode &= ~S_IFMT;
obj->yst_mode |= S_IFDIR;
}
-
+
break;
case YAFFS_OBJECT_TYPE_UNKNOWN :
case YAFFS_OBJECT_TYPE_HARDLINK :
break;
}
+ inode->i_flags |= S_NOATIME;
+
inode->i_ino = obj->objectId;
inode->i_mode = obj->yst_mode;
inode->i_uid = obj->yst_uid;
inode->i_nlink = yaffs_GetObjectLinkCount(obj);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG
+ (
"yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
inode->i_mode, inode->i_uid, inode->i_gid,
(int)inode->i_size, atomic_read(&inode->i_count)));
} else {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_FileInode invalid parameters\n"));
+ ( "yaffs_FileInode invalid parameters\n"));
}
}
if (!sb) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n"));
+ ( "yaffs_get_inode for NULL super_block!!\n"));
return NULL;
}
if (!obj) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_get_inode for NULL object!!\n"));
+ ( "yaffs_get_inode for NULL object!!\n"));
return NULL;
}
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
+ ( "yaffs_get_inode for object %d\n", obj->objectId));
- inode = iget(sb, obj->objectId);
+ inode = Y_IGET(sb, obj->objectId);
+ if(IS_ERR(inode))
+ return NULL;
/* NB Side effect: iget calls back to yaffs_read_inode(). */
/* iget also increments the inode's i_count */
if (!obj) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_file_write: hey obj is null!\n"));
+ ( "yaffs_file_write: hey obj is null!\n"));
} else {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG
- "yaffs_file_write about to write writing %d bytes"
+ (
+ "yaffs_file_write about to write writing %zu bytes"
"to object %d at %d\n",
n, obj->objectId, ipos));
}
nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n",
+ ( "yaffs_file_write writing %zu bytes, %d written at %d\n",
n, nWritten, ipos));
if (nWritten > 0) {
ipos += nWritten;
inode->i_blocks = (ipos + 511) >> 9;
T(YAFFS_TRACE_OS,
- (KERN_DEBUG
+ (
"yaffs_file_write size updated to %d bytes, "
"%d blocks\n",
ipos, (int)(inode->i_blocks)));
return nWritten == 0 ? -ENOSPC : nWritten;
}
+/* Space holding and freeing is done to ensure we have space available for write_begin/end */
+/* For now we just assume few parallel writes and check against a small number. */
+/* Todo: need to do this with a counter to handle parallel reads better */
+
+static ssize_t yaffs_hold_space(struct file *f)
+{
+ yaffs_Object *obj;
+ yaffs_Device *dev;
+
+ int nFreeChunks;
+
+
+ obj = yaffs_DentryToObject(f->f_dentry);
+
+ dev = obj->myDev;
+
+ yaffs_GrossLock(dev);
+
+ nFreeChunks = yaffs_GetNumberOfFreeChunks(dev);
+
+ yaffs_GrossUnlock(dev);
+
+ return (nFreeChunks > 20) ? 1 : 0;
+}
+
+static void yaffs_release_space(struct file *f)
+{
+ yaffs_Object *obj;
+ yaffs_Device *dev;
+
+
+ obj = yaffs_DentryToObject(f->f_dentry);
+
+ dev = obj->myDev;
+
+ yaffs_GrossLock(dev);
+
+
+ yaffs_GrossUnlock(dev);
+
+}
+
static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
{
yaffs_Object *obj;
yaffs_Device *dev;
struct inode *inode = f->f_dentry->d_inode;
unsigned long offset, curoffs;
- struct list_head *i;
+ struct ylist_head *i;
yaffs_Object *l;
char name[YAFFS_MAX_NAME_LENGTH + 1];
if (offset == 0) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_readdir: entry . ino %d \n",
+ ( "yaffs_readdir: entry . ino %d \n",
(int)inode->i_ino));
if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR)
< 0) {
}
if (offset == 1) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n",
+ ( "yaffs_readdir: entry .. ino %d \n",
(int)f->f_dentry->d_parent->d_inode->i_ino));
if (filldir
(dirent, "..", 2, offset,
f->f_version = inode->i_version;
}
- list_for_each(i, &obj->variant.directoryVariant.children) {
+ ylist_for_each(i, &obj->variant.directoryVariant.children) {
curoffs++;
if (curoffs >= offset) {
- l = list_entry(i, yaffs_Object, siblings);
+ l = ylist_entry(i, yaffs_Object, siblings);
yaffs_GetObjectName(l, name,
YAFFS_MAX_NAME_LENGTH + 1);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name,
+ ( "yaffs_readdir: %s inode %d\n", name,
yaffs_GetObjectInode(l)));
if (filldir(dirent,
/*
* File creation. Allocate an inode, and we're done..
*/
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
+#define YCRED(x) x
+#else
+#define YCRED(x) x->cred
+#endif
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
dev_t rdev)
yaffs_Object *parent = yaffs_InodeToObject(dir);
int error = -ENOSPC;
- uid_t uid = current->fsuid;
- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
-
+ uid_t uid = YCRED(current)->fsuid;
+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+
if((dir->i_mode & S_ISGID) && S_ISDIR(mode))
mode |= S_ISGID;
if (parent) {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n",
+ ( "yaffs_mknod: parent object %d type %d\n",
parent->objectId, parent->variantType));
} else {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_mknod: could not get parent object\n"));
+ ( "yaffs_mknod: could not get parent object\n"));
return -EPERM;
}
switch (mode & S_IFMT) {
default:
/* Special (socket, fifo, device...) */
- T(YAFFS_TRACE_OS, (KERN_DEBUG
+ T(YAFFS_TRACE_OS, (
"yaffs_mknod: making special\n"));
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
obj =
#endif
break;
case S_IFREG: /* file */
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_mknod: making file\n"));
obj =
yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
gid);
break;
case S_IFDIR: /* directory */
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_mknod: making directory\n"));
+ ( "yaffs_mknod: making directory\n"));
obj =
yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
uid, gid);
break;
case S_IFLNK: /* symlink */
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_mknod: making symlink\n"));
obj = NULL; /* Do we ever get here? */
break;
}
-
+
/* Can not call yaffs_get_inode() with gross lock held */
yaffs_GrossUnlock(dev);
inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
d_instantiate(dentry, inode);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_mknod created object %d count = %d\n",
+ ( "yaffs_mknod created object %d count = %d\n",
obj->objectId, atomic_read(&inode->i_count)));
error = 0;
} else {
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_mknod failed making object\n"));
+ ( "yaffs_mknod failed making object\n"));
error = -ENOMEM;
}
static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
int retVal;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_mkdir\n"));
retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
#if 0
/* attempt to fix dir bug - didn't work */
static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
#endif
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_create\n"));
return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
}
yaffs_Device *dev;
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino),
+ ( "yaffs_unlink %d:%s\n", (int)(dir->i_ino),
dentry->d_name.name));
dev = yaffs_InodeToObject(dir)->myDev;
yaffs_Object *link = NULL;
yaffs_Device *dev;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_link\n"));
obj = yaffs_InodeToObject(inode);
dev = obj->myDev;
d_instantiate(dentry, old_dentry->d_inode);
atomic_inc(&old_dentry->d_inode->i_count);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_link link count %d i_count %d\n",
+ ( "yaffs_link link count %d i_count %d\n",
old_dentry->d_inode->i_nlink,
atomic_read(&old_dentry->d_inode->i_count)));
{
yaffs_Object *obj;
yaffs_Device *dev;
- uid_t uid = current->fsuid;
- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+ uid_t uid = YCRED(current)->fsuid;
+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_symlink\n"));
dev = yaffs_InodeToObject(dir)->myDev;
yaffs_GrossLock(dev);
inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
d_instantiate(dentry, inode);
- T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n"));
+ T(YAFFS_TRACE_OS, ( "symlink created OK\n"));
return 0;
} else {
- T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n"));
+ T(YAFFS_TRACE_OS, ( "symlink not created\n"));
}
dev = obj->myDev;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_sync_object\n"));
yaffs_GrossLock(dev);
yaffs_FlushFile(obj, 1);
yaffs_GrossUnlock(dev);
int retVal = YAFFS_FAIL;
yaffs_Object *target;
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_rename\n"));
dev = yaffs_InodeToObject(old_dir)->myDev;
yaffs_GrossLock(dev);
target =
yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
new_dentry->d_name.name);
-
-
+
+
if (target &&
target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
- !list_empty(&target->variant.directoryVariant.children)) {
-
- T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n"));
+ !ylist_empty(&target->variant.directoryVariant.children)) {
+
+ T(YAFFS_TRACE_OS, ( "target is non-empty dir\n"));
retVal = YAFFS_FAIL;
} else {
/* Now does unlinking internally using shadowing mechanism */
- T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n"));
-
+ T(YAFFS_TRACE_OS, ( "calling yaffs_RenameObject\n"));
+
retVal =
yaffs_RenameObject(yaffs_InodeToObject(old_dir),
old_dentry->d_name.name,
yaffs_Device *dev;
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_setattr of object %d\n",
+ ( "yaffs_setattr of object %d\n",
yaffs_InodeToObject(inode)->objectId));
if ((error = inode_change_ok(inode, attr)) == 0) {
yaffs_Device *dev = yaffs_SuperToDevice(sb);
#endif
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n"));
+ T(YAFFS_TRACE_OS, ( "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->nDataBytesPerChunk) {
+
+ if(dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)){
+ /* Do this if chunk size is not a power of 2 */
+
+ uint64_t bytesInDev;
+ uint64_t bytesFree;
- buf->f_blocks =
- (dev->endBlock - dev->startBlock +
- 1) * dev->nChunksPerBlock / (sb->s_blocksize /
- dev->nDataBytesPerChunk);
- buf->f_bfree =
- yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
- dev->nDataBytesPerChunk);
- } else {
+ bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock +1))) *
+ ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
+
+ do_div(bytesInDev,sb->s_blocksize); /* bytesInDev becomes the number of blocks */
+ buf->f_blocks = bytesInDev;
+ bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
+ ((uint64_t)(dev->nDataBytesPerChunk));
+
+ do_div(bytesFree,sb->s_blocksize);
+
+ buf->f_bfree = bytesFree;
+
+ } else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+
buf->f_blocks =
- (dev->endBlock - dev->startBlock +
- 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
- sb->s_blocksize);
- buf->f_bfree =
- yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
- sb->s_blocksize);
+ (dev->endBlock - dev->startBlock + 1) *
+ dev->nChunksPerBlock /
+ (sb->s_blocksize / dev->nDataBytesPerChunk);
+ buf->f_bfree =
+ yaffs_GetNumberOfFreeChunks(dev) /
+ (sb->s_blocksize / dev->nDataBytesPerChunk);
+ } else {
+ buf->f_blocks =
+ (dev->endBlock - dev->startBlock + 1) *
+ dev->nChunksPerBlock *
+ (dev->nDataBytesPerChunk / sb->s_blocksize);
+
+ buf->f_bfree =
+ yaffs_GetNumberOfFreeChunks(dev) *
+ (dev->nDataBytesPerChunk / sb->s_blocksize);
}
+
+
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_bavail = buf->f_bfree;
}
-/**
static int yaffs_do_sync_fs(struct super_block *sb)
{
yaffs_Device *dev = yaffs_SuperToDevice(sb);
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_do_sync_fs\n"));
if(sb->s_dirt) {
yaffs_GrossLock(dev);
- if(dev)
+ if(dev){
+ yaffs_FlushEntireDeviceCache(dev);
yaffs_CheckpointSave(dev);
-
+ }
+
yaffs_GrossUnlock(dev);
sb->s_dirt = 0;
}
return 0;
}
-**/
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
static void yaffs_write_super(struct super_block *sb)
#endif
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_write_super\n"));
+ if (yaffs_auto_checkpoint >= 2)
+ yaffs_do_sync_fs(sb);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
- return 0; /* yaffs_do_sync_fs(sb);*/
+ return 0;
#endif
}
#endif
{
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_sync_fs\n"));
+
+ if (yaffs_auto_checkpoint >= 1)
+ yaffs_do_sync_fs(sb);
- return 0; /* yaffs_do_sync_fs(sb);*/
+ return 0;
+
+}
+
+#ifdef YAFFS_USE_OWN_IGET
+
+static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino)
+{
+ struct inode *inode;
+ yaffs_Object *obj;
+ yaffs_Device *dev = yaffs_SuperToDevice(sb);
+
+ T(YAFFS_TRACE_OS,
+ ( "yaffs_iget for %lu\n", ino));
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ /* NB This is called as a side effect of other functions, but
+ * we had to release the lock to prevent deadlocks, so
+ * need to lock again.
+ */
+
+ yaffs_GrossLock(dev);
+
+ obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
+
+ yaffs_FillInodeFromObject(inode, obj);
+
+ yaffs_GrossUnlock(dev);
+ unlock_new_inode(inode);
+ return inode;
}
+#else
static void yaffs_read_inode(struct inode *inode)
{
/* NB This is called as a side effect of other functions, but
- * we had to release the lock to prevent deadlocks, so
+ * we had to release the lock to prevent deadlocks, so
* need to lock again.
*/
yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
T(YAFFS_TRACE_OS,
- (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino));
+ ( "yaffs_read_inode for %d\n", (int)inode->i_ino));
yaffs_GrossLock(dev);
-
+
obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
yaffs_FillInodeFromObject(inode, obj);
yaffs_GrossUnlock(dev);
}
-static LIST_HEAD(yaffs_dev_list);
+#endif
+
+static YLIST_HEAD(yaffs_dev_list);
+
+#if 0 // not used
+static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
+{
+ yaffs_Device *dev = yaffs_SuperToDevice(sb);
+
+ if( *flags & MS_RDONLY ) {
+ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+
+ T(YAFFS_TRACE_OS,
+ ( "yaffs_remount_fs: %s: RO\n", dev->name ));
+
+ yaffs_GrossLock(dev);
+
+ yaffs_FlushEntireDeviceCache(dev);
+
+ yaffs_CheckpointSave(dev);
+
+ if (mtd->sync)
+ mtd->sync(mtd);
+
+ yaffs_GrossUnlock(dev);
+ }
+ else {
+ T(YAFFS_TRACE_OS,
+ ( "yaffs_remount_fs: %s: RW\n", dev->name ));
+ }
+
+ return 0;
+}
+#endif
static void yaffs_put_super(struct super_block *sb)
{
yaffs_Device *dev = yaffs_SuperToDevice(sb);
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
+ T(YAFFS_TRACE_OS, ( "yaffs_put_super\n"));
yaffs_GrossLock(dev);
-
+
yaffs_FlushEntireDeviceCache(dev);
-
+
+ yaffs_CheckpointSave(dev);
+
if (dev->putSuperFunc) {
dev->putSuperFunc(sb);
}
-
- yaffs_CheckpointSave(dev);
+
yaffs_Deinitialise(dev);
-
+
yaffs_GrossUnlock(dev);
/* we assume this is protected by lock_kernel() in mount/umount */
- list_del(&dev->devList);
-
+ ylist_del(&dev->devList);
+
if(dev->spareBuffer){
YFREE(dev->spareBuffer);
dev->spareBuffer = NULL;
static void yaffs_MarkSuperBlockDirty(void *vsb)
{
struct super_block *sb = (struct super_block *)vsb;
-
- T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
-// if(sb)
-// sb->s_dirt = 1;
+
+ T(YAFFS_TRACE_OS, ( "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
+ if(sb)
+ sb->s_dirt = 1;
+}
+
+typedef struct {
+ int inband_tags;
+ int skip_checkpoint_read;
+ int skip_checkpoint_write;
+ int no_cache;
+} yaffs_options;
+
+#define MAX_OPT_LEN 20
+static int yaffs_parse_options(yaffs_options *options, const char *options_str)
+{
+ char cur_opt[MAX_OPT_LEN+1];
+ int p;
+ int error = 0;
+
+ /* Parse through the options which is a comma seperated list */
+
+ while(options_str && *options_str && !error){
+ memset(cur_opt,0,MAX_OPT_LEN+1);
+ p = 0;
+
+ while(*options_str && *options_str != ','){
+ if(p < MAX_OPT_LEN){
+ cur_opt[p] = *options_str;
+ p++;
+ }
+ options_str++;
+ }
+
+ if(!strcmp(cur_opt,"inband-tags"))
+ options->inband_tags = 1;
+ else if(!strcmp(cur_opt,"no-cache"))
+ options->no_cache = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint-read"))
+ options->skip_checkpoint_read = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint-write"))
+ options->skip_checkpoint_write = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint")){
+ options->skip_checkpoint_read = 1;
+ options->skip_checkpoint_write = 1;
+ } else {
+ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
+ error = 1;
+ }
+
+ }
+
+ return error;
}
static struct super_block *yaffs_internal_read_super(int yaffsVersion,
char devname_buf[BDEVNAME_SIZE + 1];
struct mtd_info *mtd;
int err;
+ char *data_str = (char *)data;
+
+ yaffs_options options;
sb->s_magic = YAFFS_MAGIC;
sb->s_op = &yaffs_super_ops;
+ sb->s_flags |= MS_NOATIME;
if (!sb)
printk(KERN_INFO "yaffs: sb is NULL\n");
sb->s_dev,
yaffs_devname(sb, devname_buf));
+ if(!data_str)
+ data_str = "";
+
+ printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str);
+
+ memset(&options,0,sizeof(options));
+
+ if(yaffs_parse_options(&options,data_str)){
+ /* Option parsing failed */
+ return NULL;
+ }
+
+
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion));
T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob));
T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad));
T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad));
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- T(YAFFS_TRACE_OS, (" writesize %d\n", mtd->writesize));
-#else
- T(YAFFS_TRACE_OS, (" oobblock %d\n", mtd->oobblock));
-#endif
+ T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
- T(YAFFS_TRACE_OS, (" size %d\n", mtd->size));
-
-#ifdef CONFIG_YAFFS_AUTO_YAFFS2
-
- if (yaffsVersion == 1 &&
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- mtd->writesize >= 2048) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
+ T(YAFFS_TRACE_OS, (" size %u\n", mtd->size));
#else
- mtd->oobblock >= 2048) {
+ T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size));
#endif
+
+#ifdef CONFIG_YAFFS_AUTO_YAFFS2
+
+ if (yaffsVersion == 1 &&
+ WRITE_SIZE(mtd) >= 2048) {
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
+ !options.inband_tags &&
+ WRITE_SIZE(mtd) == 512){
T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
yaffsVersion = 1;
- }
+ }
#endif
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) {
+ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
+ !options.inband_tags) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not have the "
"right page sizes\n"));
return NULL;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- if (mtd->writesize < YAFFS_BYTES_PER_CHUNK ||
-#else
- if (mtd->oobblock < YAFFS_BYTES_PER_CHUNK ||
-#endif
+ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not support have the "
/* Set up the memory size parameters.... */
- nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+ nBlocks = YCALCBLOCKS(mtd->size ,(YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
+
dev->startBlock = 0;
dev->endBlock = nBlocks - 1;
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
- dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
dev->nReservedBlocks = 5;
- dev->nShortOpCaches = 10; /* Enable short op caching */
+ dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+ dev->inbandTags = options.inband_tags;
/* ... and the functions. */
if (yaffsVersion == 2) {
dev->spareBuffer = YMALLOC(mtd->oobsize);
dev->isYaffs2 = 1;
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- dev->nDataBytesPerChunk = mtd->writesize;
+ dev->totalBytesPerChunk = mtd->writesize;
dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
#else
- dev->nDataBytesPerChunk = mtd->oobblock;
+ dev->totalBytesPerChunk = mtd->oobblock;
dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
#endif
- nBlocks = mtd->size / mtd->erasesize;
+ nBlocks = YCALCBLOCKS(mtd->size,mtd->erasesize);
- dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
dev->startBlock = 0;
dev->endBlock = nBlocks - 1;
} else {
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ /* use the MTD interface in yaffs_mtdif1.c */
+ dev->writeChunkWithTagsToNAND =
+ nandmtd1_WriteChunkWithTagsToNAND;
+ dev->readChunkWithTagsFromNAND =
+ nandmtd1_ReadChunkWithTagsFromNAND;
+ dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad;
+ dev->queryNANDBlock = nandmtd1_QueryNANDBlock;
+#else
dev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
+#endif
dev->isYaffs2 = 0;
}
/* ... and common functions */
dev->initialiseNAND = nandmtd_InitialiseNAND;
dev->putSuperFunc = yaffs_MTDPutSuper;
-
+
dev->superBlock = (void *)sb;
dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty;
-
+
#ifndef CONFIG_YAFFS_DOES_ECC
dev->useNANDECC = 1;
dev->wideTnodesDisabled = 1;
#endif
+ dev->skipCheckpointRead = options.skip_checkpoint_read;
+ dev->skipCheckpointWrite = options.skip_checkpoint_write;
+
/* we assume this is protected by lock_kernel() in mount/umount */
- list_add_tail(&dev->devList, &yaffs_dev_list);
+ ylist_add_tail(&dev->devList, &yaffs_dev_list);
init_MUTEX(&dev->grossLock);
T(YAFFS_TRACE_OS,
("yaffs_read_super: guts initialised %s\n",
(err == YAFFS_OK) ? "OK" : "FAILED"));
-
+
/* Release lock before yaffs_get_inode() */
yaffs_GrossUnlock(dev);
return NULL;
}
sb->s_root = root;
+ sb->s_dirt = !dev->isCheckpointed;
+ T(YAFFS_TRACE_ALWAYS,
+ ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed));
T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
return sb;
{
buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
+ buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
+ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
+ buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
+ buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated);
buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
- buf +=
- sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
- buf +=
- sprintf(buf, "passiveGCs......... %d\n",
+ buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+ buf += sprintf(buf, "passiveGCs......... %d\n",
dev->passiveGarbageCollections);
buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
+ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks);
buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed);
buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed);
sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
+ buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
return buf;
}
char **start,
off_t offset, int count, int *eof, void *data)
{
- struct list_head *item;
+ struct ylist_head *item;
char *buf = page;
int step = offset;
int n = 0;
lock_kernel();
/* Locate and print the Nth entry. Order N-squared but N is small. */
- list_for_each(item, &yaffs_dev_list) {
- yaffs_Device *dev = list_entry(item, yaffs_Device, devList);
+ ylist_for_each(item, &yaffs_dev_list) {
+ yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList);
if (n < step) {
n++;
continue;
/**
* Set the verbosity of the warnings and error messages.
*
+ * Note that the names can only be a..z or _ with the current code.
*/
static struct {
{"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
{"buffers", YAFFS_TRACE_BUFFERS},
{"bug", YAFFS_TRACE_BUG},
+ {"checkpt", YAFFS_TRACE_CHECKPOINT},
{"deletion", YAFFS_TRACE_DELETION},
{"erase", YAFFS_TRACE_ERASE},
{"error", YAFFS_TRACE_ERROR},
{"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
{"scan", YAFFS_TRACE_SCAN},
{"tracing", YAFFS_TRACE_TRACING},
+
+ {"verify", YAFFS_TRACE_VERIFY},
+ {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
+ {"verify_full", YAFFS_TRACE_VERIFY_FULL},
+ {"verify_all", YAFFS_TRACE_VERIFY_ALL},
+
{"write", YAFFS_TRACE_WRITE},
{"all", 0xffffffff},
{"none", 0},
{NULL, 0},
};
+#define MAX_MASK_NAME_LENGTH 40
static int yaffs_proc_write(struct file *file, const char *buf,
unsigned long count, void *data)
{
unsigned rg = 0, mask_bitfield;
- char *end, *mask_name;
+ char *end;
+ char *mask_name;
+ const char *x;
+ char substring[MAX_MASK_NAME_LENGTH+1];
int i;
int done = 0;
int add, len = 0;
break;
}
mask_name = NULL;
+
mask_bitfield = simple_strtoul(buf + pos, &end, 0);
if (end > buf + pos) {
mask_name = "numeral";
len = end - (buf + pos);
+ pos += len;
done = 0;
} else {
+ for(x = buf + pos, i = 0;
+ (*x == '_' || (*x >='a' && *x <= 'z')) &&
+ i <MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+ substring[i] = *x;
+ substring[i] = '\0';
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
- len = strlen(mask_flags[i].mask_name);
- if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) {
+ if(strcmp(substring,mask_flags[i].mask_name) == 0){
mask_name = mask_flags[i].mask_name;
mask_bitfield = mask_flags[i].mask_bitfield;
done = 0;
}
if (mask_name != NULL) {
- pos += len;
done = 0;
switch(add) {
case '-':
}
yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
-
+
+ printk("new trace = 0x%08X\n",yaffs_traceMask);
+
if (rg & YAFFS_TRACE_ALWAYS) {
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
char flag;
/* Install the proc_fs entry */
my_proc_entry = create_proc_entry("yaffs",
S_IRUGO | S_IFREG,
- &proc_root);
+ YPROC_ROOT);
if (my_proc_entry) {
my_proc_entry->write_proc = yaffs_proc_write;
T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
" removing. \n"));
- remove_proc_entry("yaffs", &proc_root);
+ remove_proc_entry("yaffs", YPROC_ROOT);
fsinst = fs_to_install;
projects / yaffs2.git / blobdiff