* >> inode->u.generic_ip points to the associated yaffs_Object.
*/
+/*
+ * NB There are two variants of Linux VFS glue code. This variant supports
+ * a single version and should not include any multi-version code.
+ */
#include <linux/version.h>
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10))
-#define YAFFS_COMPILE_BACKGROUND
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23))
-#define YAFFS_COMPILE_FREEZER
-#endif
-#endif
-
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
-#define YAFFS_COMPILE_EXPORTFS
-#endif
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
-#define YAFFS_USE_SETATTR_COPY
-#define YAFFS_USE_TRUNCATE_SETSIZE
-#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
-#define YAFFS_HAS_EVICT_INODE
-#endif
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
-#define YAFFS_NEW_FOLLOW_LINK 1
-#else
-#define YAFFS_NEW_FOLLOW_LINK 0
-#endif
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
-#include <linux/config.h>
-#endif
-
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/string.h>
#include <linux/ctype.h>
-
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
#include <linux/namei.h>
-#endif
-
-#ifdef YAFFS_COMPILE_EXPORTFS
#include <linux/exportfs.h>
-#endif
-
-#ifdef YAFFS_COMPILE_BACKGROUND
#include <linux/kthread.h>
#include <linux/delay.h>
-#endif
-#ifdef YAFFS_COMPILE_FREEZER
#include <linux/freezer.h>
-#endif
#include <asm/div64.h>
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
#include <linux/statfs.h>
#define UnlockPage(p) unlock_page(p)
#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags)
-/* FIXME: use sb->s_id instead ? */
#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf)
-#else
-
-#include <linux/locks.h>
-#define BDEVNAME_SIZE 0
-#define yaffs_devname(sb, buf) kdevname(sb->s_dev)
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0))
-/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
-#define __user
-#endif
-
-#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(2,6,26))
-#define Y_INIT_TIMER(a) init_timer(a)
-#else
#define Y_INIT_TIMER(a) init_timer_on_stack(a)
-#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 <linux/uaccess.h>
#include <linux/mtd/mtd.h>
unsigned int yaffs_bg_enable = 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);
module_param(yaffs_gc_control, uint, 0644);
module_param(yaffs_bg_enable, uint, 0644);
-#else
-MODULE_PARM(yaffs_traceMask, "i");
-MODULE_PARM(yaffs_wr_attempts, "i");
-MODULE_PARM(yaffs_auto_checkpoint, "i");
-MODULE_PARM(yaffs_gc_control, "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
-#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))
#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info)
-#else
-#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
-#endif
#define update_dir_time(dir) do {\
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_file_flush(struct file *file);
-#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
static int yaffs_sync_object(struct file *file, int datasync);
-#else
-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
- int datasync);
-#endif
static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *n);
static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *n);
-#else
-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
-#endif
static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry);
static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
const char *symname);
static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
dev_t dev);
-#else
-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- int dev);
-#endif
static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
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, 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);
-#endif
#ifdef YAFFS_HAS_PUT_INODE
static void yaffs_put_inode(struct inode *inode);
#endif
-#ifdef YAFFS_HAS_EVICT_INODE
static void yaffs_evict_inode(struct inode *);
-#else
-static void yaffs_delete_inode(struct inode *);
-static void yaffs_clear_inode(struct inode *);
-#endif
static int yaffs_readpage(struct file *file, struct page *page);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
-#else
-static int yaffs_writepage(struct page *page);
-#endif
#ifdef CONFIG_YAFFS_XATTR
int yaffs_setxattr(struct dentry *dentry, const char *name,
#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);
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias);
static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
-#else
-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
-#endif
static void yaffs_MarkSuperBlockDirty(yaffs_Device *dev);
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 const struct file_operations yaffs_file_operations = {
.read = do_sync_read,
.write = do_sync_write,
.llseek = generic_file_llseek,
};
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
-
-static const 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 const struct file_operations yaffs_file_operations = {
- .read = generic_file_read,
- .write = generic_file_write,
- .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
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
-static void zero_user_segment(struct page *page, unsigned start, unsigned end)
-{
- void * kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + start, 0, end - start);
- kunmap_atomic(kaddr, KM_USER0);
- flush_dcache_page(page);
-}
-#endif
static const struct inode_operations yaffs_file_inode_operations = {
static const struct inode_operations yaffs_symlink_inode_operations = {
.readlink = yaffs_readlink,
.follow_link = yaffs_follow_link,
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
.put_link = yaffs_put_link,
-#endif
.setattr = yaffs_setattr,
#ifdef CONFIG_YAFFS_XATTR
.setxattr = yaffs_setxattr,
static const 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,
-#ifdef YAFFS_HAS_EVICT_INODE
.evict_inode = yaffs_evict_inode,
-#else
- .delete_inode = yaffs_delete_inode,
- .clear_inode = yaffs_clear_inode,
-#endif
.sync_fs = yaffs_sync_fs,
.write_super = yaffs_write_super,
};
static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr)
{
-#ifdef YAFFS_USE_SETATTR_COPY
setattr_copy(inode,attr);
return 0;
-#else
- return inode_setattr(inode, attr);
-#endif
-
}
static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize)
{
-#ifdef YAFFS_USE_TRUNCATE_SETSIZE
truncate_setsize(inode,newsize);
return 0;
-#else
- truncate_inode_pages(&inode->i_data,newsize);
- return 0;
-#endif
-
}
static unsigned yaffs_gc_control_callback(yaffs_Device *dev)
up(&(yaffs_DeviceToLC(dev)->grossLock));
}
-#ifdef YAFFS_COMPILE_EXPORTFS
+
+/* ExportFS support */
static struct inode *
yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation)
{
.get_parent = yaffs2_get_parent,
} ;
-#endif
-
/*-----------------------------------------------------------------*/
/* Directory search context allows us to unlock access to yaffs during
* filldir without causing problems with the directory being modified.
return ret;
}
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
-#else
-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
-#endif
{
unsigned char *alias;
int ret;
goto out;
}
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
nd_set_link(nd, alias);
ret = (int)alias;
out:
return ERR_PTR(ret);
-#else
- ret = vfs_follow_link(nd, alias);
- kfree(alias);
-out:
- return ret;
-#endif
}
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) {
kfree(alias);
}
-#endif
struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
yaffs_Object *obj);
/*
* Lookup is used to find objects in the fs
*/
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *n)
-#else
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
-#endif
{
yaffs_Object *obj;
struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */
yaffs_HandleDeferedFree(obj);
}
-#ifdef YAFFS_HAS_EVICT_INODE
/* yaffs_evict_inode combines into one operation what was previously done in
* yaffs_clear_inode() and yaffs_delete_inode()
*
}
-#else
-
-/* clear is called to tell the fs to release any per-inode data it holds.
- * The object might still exist on disk and is just being thrown out of the cache
- * or else the object has actually been deleted and we're being called via
- * the chain
- * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode()
- */
-
-static void yaffs_clear_inode(struct inode *inode)
-{
- yaffs_Object *obj;
- yaffs_Device *dev;
-
- obj = yaffs_InodeToObject(inode);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count),
- obj ? "object exists" : "null object"));
-
- if (obj) {
- dev = obj->myDev;
- yaffs_GrossLock(dev);
- yaffs_UnstitchObject(inode,obj);
- yaffs_GrossUnlock(dev);
- }
-
-}
-
-/* delete is called when the link count is zero and the inode
- * is put (ie. nobody wants to know about it anymore, time to
- * delete the file).
- * NB Must call clear_inode()
- */
-static void yaffs_delete_inode(struct inode *inode)
-{
- yaffs_Object *obj = yaffs_InodeToObject(inode);
- yaffs_Device *dev;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count),
- obj ? "object exists" : "null object"));
- if (obj) {
- dev = obj->myDev;
- yaffs_GrossLock(dev);
- yaffs_DeleteObject(obj);
- yaffs_GrossUnlock(dev);
- }
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
- truncate_inode_pages(&inode->i_data, 0);
-#endif
- clear_inode(inode);
-}
-#endif
-
-
-#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);
dev = obj->myDev;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
BUG_ON(!PageLocked(pg));
-#else
- if (!PageLocked(pg))
- PAGE_BUG(pg);
-#endif
pg_buf = kmap(pg);
/* FIXME: Can kmap fail? */
/* writepage inspired by/stolen from smbfs */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
-#else
-static int yaffs_writepage(struct page *page)
-#endif
{
yaffs_Device *dev;
struct address_space *mapping = page->mapping;
}
-#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)
int space_held = 0;
/* 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) {
return ret;
}
-#else
-static int yaffs_prepare_write(struct file *f, struct page *pg,
- unsigned offset, unsigned to)
-{
- T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n")));
-
- if (!Page_Uptodate(pg))
- 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)
page_cache_release(pg);
return ret;
}
-#else
-
-static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
- unsigned to)
-{
- 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;
-
- kva = kmap(pg);
- addr = kva + offset;
-
- saddr = (unsigned) addr;
-
- T(YAFFS_TRACE_OS,
- (TSTR("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,
- (TSTR("yaffs_commit_write not same size nWritten %d nBytes %d\n"),
- nWritten, nBytes));
- SetPageError(pg);
- } else {
- /* Nothing */
- }
-
- kunmap(pg);
-
- T(YAFFS_TRACE_OS,
- (TSTR("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)
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);
+
inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
inode->i_ctime.tv_nsec = 0;
-#else
- inode->i_rdev = obj->yst_rdev;
- inode->i_atime = obj->yst_atime;
- inode->i_mtime = obj->yst_mtime;
- inode->i_ctime = obj->yst_ctime;
-#endif
inode->i_size = yaffs_GetObjectFileLength(obj);
inode->i_blocks = (inode->i_size + 511) >> 9;
switch (obj->yst_mode & S_IFMT) {
default: /* fifo, device or socket */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
init_special_inode(inode, obj->yst_mode,
old_decode_dev(obj->yst_rdev));
-#else
- init_special_inode(inode, obj->yst_mode,
- (dev_t) (obj->yst_rdev));
-#endif
break;
case S_IFREG: /* file */
inode->i_op = &yaffs_file_inode_operations;
* 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)
-#else
-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- int rdev)
-#endif
{
struct inode *inode;
default:
/* Special (socket, fifo, device...) */
T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n")));
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
gid, old_encode_dev(rdev));
-#else
- obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
- gid, rdev);
-#endif
break;
case S_IFREG: /* file */
T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n")));
return retVal;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *n)
-#else
-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
-#endif
{
T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n")));
return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
return -ENOMEM;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
static int yaffs_sync_object(struct file *file, int datasync)
-#else
-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
- int datasync)
-#endif
{
yaffs_Object *obj;
yaffs_Device *dev;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
struct dentry *dentry = file->f_path.dentry;
-#endif
obj = yaffs_DentryToObject(dentry);
#endif
-#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)
-{
- yaffs_Device *dev = yaffs_SuperToDevice(sb);
-#endif
T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n")));
* The thread should not do any writing while the fs is in read only.
*/
-#ifdef YAFFS_COMPILE_BACKGROUND
void yaffs_background_waker(unsigned long data)
{
(TSTR("yaffs_background starting for dev %p\n"),
(void *)dev));
-#ifdef YAFFS_COMPILE_FREEZER
set_freezable();
-#endif
while(context->bgRunning){
T(YAFFS_TRACE_BACKGROUND,
(TSTR("yaffs_background\n")));
if(kthread_should_stop())
break;
-#ifdef YAFFS_COMPILE_FREEZER
if(try_to_freeze())
continue;
-#endif
+
yaffs_GrossLock(dev);
now = jiffies;
next_gc = next_dir_update;
}
yaffs_GrossUnlock(dev);
-#if 1
expires = next_dir_update;
if (time_before(next_gc,expires))
expires = next_gc;
add_timer(&timer);
schedule();
del_timer_sync(&timer);
-#else
- msleep(10);
-#endif
}
return 0;
ctxt->bgThread = NULL;
}
}
-#else
-static int yaffs_BackgroundThread(void *data)
-{
- return 0;
-}
-
-static int yaffs_BackgroundStart(yaffs_Device *dev)
-{
- return 0;
-}
-
-static void yaffs_BackgroundStop(yaffs_Device *dev)
-{
-}
-#endif
-#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
{
unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2);
yaffs_do_sync_fs(sb, request_checkpoint);
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
- return 0;
-#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
{
unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1);
return 0;
}
-#ifdef YAFFS_USE_OWN_IGET
-
static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
{
struct 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
- * need to lock again.
- */
-
- yaffs_Object *obj;
- yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino));
-
- if(current != yaffs_DeviceToLC(dev)->readdirProcess)
- yaffs_GrossLock(dev);
-
- obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
-
- yaffs_FillInodeFromObject(inode, obj);
-
- if(current != yaffs_DeviceToLC(dev)->readdirProcess)
- yaffs_GrossUnlock(dev);
-}
-
-#endif
-
static YLIST_HEAD(yaffs_context_list);
struct semaphore yaffs_context_lock;
readOnly =((sb->s_flags & MS_RDONLY) != 0);
-
-#ifdef YAFFS_COMPILE_EXPORTFS
sb->s_export_op = &yaffs_export_ops;
-#endif
if (!sb)
printk(KERN_INFO "yaffs: sb is NULL\n");
T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd)));
T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize));
T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize));
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
- T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size));
-#else
T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size));
-#endif
#ifdef CONFIG_YAFFS_AUTO_YAFFS2
!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,
(TSTR("yaffs: MTD device does not support required "
"functions\n")));
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,
(TSTR("yaffs: MTD device does not support required "
"functions\n")));
dev->readOnly = readOnly;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
sb->s_fs_info = dev;
-#else
- sb->u.generic_sbp = dev;
-#endif
dev->driverContext = mtd;
param->name = mtd->name;
param->refreshPeriod = 500;
#endif
+#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
+ param->alwaysCheckErased = 1;
+#endif
+
if(options.empty_lost_and_found_overridden)
param->emptyLostAndFound = options.empty_lost_and_found;
param->queryNANDBlock = nandmtd2_QueryNANDBlock;
yaffs_DeviceToLC(dev)->spareBuffer = YMALLOC(mtd->oobsize);
param->isYaffs2 = 1;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
param->totalBytesPerChunk = mtd->writesize;
param->nChunksPerBlock = mtd->erasesize / mtd->writesize;
-#else
- param->totalBytesPerChunk = mtd->oobblock;
- param->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
-#endif
nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
param->startBlock = 0;
param->endBlock = nBlocks - 1;
} else {
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
/* use the MTD interface in yaffs_mtdif1.c */
param->writeChunkWithTagsToNAND =
nandmtd1_WriteChunkWithTagsToNAND;
nandmtd1_ReadChunkWithTagsFromNAND;
param->markNANDBlockBad = nandmtd1_MarkNANDBlockBad;
param->queryNANDBlock = nandmtd1_QueryNANDBlock;
-#else
- param->writeChunkToNAND = nandmtd_WriteChunkToNAND;
- param->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
-#endif
param->isYaffs2 = 0;
}
/* ... and common functions */
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
int silent)
{
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,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
-#else
-static struct super_block *yaffs_read_super(struct super_block *sb, void *data,
- int silent)
-{
- return yaffs_internal_read_super(1, sb, data, silent);
-}
-
-static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
- FS_REQUIRES_DEV);
-#endif
#ifdef CONFIG_YAFFS_YAFFS2
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
int silent)
{
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,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
-#else
-static struct super_block *yaffs2_read_super(struct super_block *sb,
- void *data, int silent)
-{
- return yaffs_internal_read_super(2, sb, data, silent);
-}
-
-static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
- FS_REQUIRES_DEV);
-#endif
-
#endif /* CONFIG_YAFFS_YAFFS2 */
static struct proc_dir_entry *my_proc_entry;
buf += sprintf(buf, "refreshPeriod...... %d\n", dev->param.refreshPeriod);
buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->param.nShortOpCaches);
buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->param.nReservedBlocks);
+ buf += sprintf(buf, "alwaysCheckErased...%d\n", dev->param.alwaysCheckErased);
buf += sprintf(buf, "\n");
projects / yaffs2.git / blobdiff