*/
-const char *yaffs_fs_c_version = "$Id: yaffs_fs.c,v 1.14 2005-07-29 20:25:43 luc Exp $";
+const char *yaffs_fs_c_version = "$Id: yaffs_fs.c,v 1.24 2005-08-01 20:54:45 luc Exp $";
extern const char *yaffs_guts_c_version;
-
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/statfs.h>
#define UnlockPage(p) unlock_page(p)
#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags)
-//#define kdevname(x) cdevname(to_kdev_t(x))
-#define kdevname(x) "(unavailable)" // temporary fix
+#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) // FIXME: use sb->s_id instead ?
#else
#include <linux/locks.h>
+#define BDEVNAME_SIZE 0
+#define yaffs_devname(sb, buf) kdevname(sb->s_dev)
#endif
//unsigned yaffs_traceMask = 0xFFFFFFFF;
-#ifdef CONFIG_YAFFS_RAM_ENABLED
-#include "yaffs_nandemul.h"
-// 2 MB of RAM for emulation
-#define YAFFS_RAM_EMULATION_SIZE 0x200000
-#endif //CONFIG_YAFFS_RAM_ENABLED
-
-#if CONFIG_YAFFS2_RAM_ENABLED
-#include "yaffs_nandemul2k.h"
-#endif
-
-#ifdef CONFIG_YAFFS_MTD_ENABLED
+#ifdef CONFIG_YAFFS_YAFFS1
#include <linux/mtd/mtd.h>
#include "yaffs_mtdif.h"
#include "yaffs_mtdif2.h"
-#endif //CONFIG_YAFFS_MTD_ENABLED
+#endif //CONFIG_YAFFS_YAFFS1
//#define T(x) printk x
#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip))
#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
-//NCB #define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
-//#if defined(CONFIG_KERNEL_2_5)
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info)
#else
static void yaffs_put_super(struct super_block *sb);
-#if 0
-static ssize_t yaffs_file_read(struct file *f, char *buf, size_t n, loff_t *pos);
-#endif
-
static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, loff_t *pos);
static int yaffs_file_flush(struct file* file);
static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
-//#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
#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);
static int yaffs_symlink(struct inode * dir, struct dentry *dentry, const char * symname);
static int yaffs_mkdir(struct inode * dir, struct dentry * dentry, int mode);
-//#if defined(CONFIG_KERNEL_2_5)
#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_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 defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
#else
.setattr = yaffs_setattr,
};
-struct inode_operations yaffs_symlink_inode_operations = {
+static struct inode_operations yaffs_symlink_inode_operations = {
.readlink = yaffs_readlink,
.follow_link = yaffs_follow_link,
.setattr = yaffs_setattr,
/*
* Lookup is used to find objects in the fs
*/
-//#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static struct dentry * yaffs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *n)
inode->i_uid = obj->yst_uid;
inode->i_gid = obj->yst_gid;
inode->i_blksize = inode->i_sb->s_blocksize;
-//#if defined(CONFIG_KERNEL_2_5)
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
inode->i_rdev = old_decode_dev(obj->yst_rdev);
return inode;
}
-#if 0
-
-// No longer used because we use generic rw */
-static ssize_t yaffs_file_read(struct file *f, char *buf, size_t n, loff_t *pos)
-{
- yaffs_Object *obj;
- int nRead,ipos;
- struct inode *inode;
- yaffs_Device *dev;
-
- T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_read\n"));
-
- obj = yaffs_DentryToObject(f->f_dentry);
-
- dev = obj->myDev;
-
- yaffs_GrossLock(dev);
-
- inode = f->f_dentry->d_inode;
-
- if (*pos < inode->i_size)
- {
- if (*pos + n > inode->i_size)
- {
- n = inode->i_size - *pos;
- }
- }
- else
- {
- n = 0;
- }
-
- nRead = yaffs_ReadDataFromFile(obj,buf,*pos,n);
- if(nRead > 0)
- {
- f->f_pos += nRead;
- }
-
- yaffs_GrossUnlock(dev);
-
- ipos = *pos;
-
- T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_file_read read %d bytes, %d read at %d\n",n,nRead,ipos));
- return nRead;
-
-}
-
-#endif
-
static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, loff_t *pos)
{
yaffs_Object *obj;
/*
* File creation. Allocate an inode, and we're done..
*/
-//#if defined(CONFIG_KERNEL_2_5)
#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
return retVal;
}
-//#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
#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
return error;
}
-//#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
#else
}
-#ifdef CONFIG_YAFFS_MTD_ENABLED
+#ifdef CONFIG_YAFFS_YAFFS1
static void yaffs_MTDPutSuper(struct super_block *sb)
{
#endif
-static struct super_block *yaffs_internal_read_super(int yaffsVersion,int useRam, struct super_block * sb, void * data, int silent)
+static struct super_block *yaffs_internal_read_super(int yaffsVersion, struct super_block * sb, void * data, int silent)
{
int nBlocks;
struct inode * inode = NULL;
struct dentry * root;
yaffs_Device *dev = 0;
+ char devname_buf[BDEVNAME_SIZE+1];
int err;
sb->s_magic = YAFFS_MAGIC;
printk(KERN_INFO"yaffs: sb is NULL\n");
else if(!sb->s_dev)
printk(KERN_INFO"yaffs: sb->s_dev is NULL\n");
- else if(! kdevname(sb->s_dev))
- printk(KERN_INFO"yaffs: kdevname is NULL\n");
+ else if(!yaffs_devname(sb, devname_buf))
+ printk(KERN_INFO"yaffs: devname is NULL\n");
else
- printk(KERN_INFO"yaffs: dev is %d name is \"%s\"\n", sb->s_dev, kdevname(sb->s_dev));
+ printk(KERN_INFO"yaffs: dev is %d name is \"%s\"\n", sb->s_dev, yaffs_devname(sb, devname_buf));
-#ifdef CONFIG_YAFFS_USE_CHUNK_SIZE
- sb->s_blocksize = YAFFS_BYTES_PER_CHUNK;
- sb->s_blocksize_bits = YAFFS_CHUNK_SIZE_SHIFT;
-#else
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-#endif
T(YAFFS_TRACE_OS,("yaffs_read_super: Using yaffs%d\n",yaffsVersion));
- T(YAFFS_TRACE_OS,("yaffs_read_super: %s block size %d\n", useRam ? "RAM" : "MTD",(int)(sb->s_blocksize)));
+ T(YAFFS_TRACE_OS,("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize)));
#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY
T(YAFFS_TRACE_OS,("yaffs: Write verification disabled. All guarantees null and void\n"));
- if(useRam)
{
-
-#ifdef CONFIG_YAFFS_RAM_ENABLED
- // Set the yaffs_Device up for ram emulation
-
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
- sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
-#else
- sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
-#endif
-
- if(!dev)
- {
- // Deep shit could not allocate device structure
- T(YAFFS_TRACE_OS,("yaffs_read_super: Failed trying to allocate yaffs_Device.\n"));
- return NULL;
- }
-
- memset(dev,0,sizeof(yaffs_Device));
- dev->genericDevice = NULL; // Not used for RAM emulation.
- dev->name = sb->s_type->name;
-
- nBlocks = YAFFS_RAM_EMULATION_SIZE / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
- dev->startBlock = 0;
- dev->endBlock = nBlocks - 1;
- dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
- dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
- dev->nReservedBlocks = 5;
-
- if(yaffsVersion == 2)
- {
- dev->writeChunkWithTagsToNAND = nandemul2k_WriteChunkWithTagsToNAND;
- dev->readChunkWithTagsFromNAND = nandemul2k_ReadChunkWithTagsFromNAND;
- dev->markNANDBlockBad = nandemul2k_MarkNANDBlockBad;
- dev->queryNANDBlock = nandemul2k_QueryNANDBlock;
- dev->eraseBlockInNAND = nandemul2k_EraseBlockInNAND;
- dev->initialiseNAND = nandemul2k_InitialiseNAND;
- dev->isYaffs2 = 1;
- dev->nChunksPerBlock = nandemul2k_GetChunksPerBlock();
- dev->nBytesPerChunk = nandemul2k_GetBytesPerChunk();;
- nBlocks = nandemul2k_GetNumberOfBlocks();
- dev->startBlock = 0;
- dev->endBlock = nBlocks - 1;
- }
- else
- {
- dev->writeChunkToNAND = nandemul_WriteChunkToNAND;
- dev->readChunkFromNAND = nandemul_ReadChunkFromNAND;
- dev->eraseBlockInNAND = nandemul_EraseBlockInNAND;
- dev->initialiseNAND = nandemul_InitialiseNAND;
- dev->isYaffs2 = 0;
- }
-#endif
-
- }
- else
- {
-#ifdef CONFIG_YAFFS_MTD_ENABLED
struct mtd_info *mtd;
T(YAFFS_TRACE_ALWAYS,("yaffs: Attempting MTD mount on %u.%u, \"%s\"\n",
- MAJOR(sb->s_dev),MINOR(sb->s_dev),kdevname(sb->s_dev)));
+ MAJOR(sb->s_dev),MINOR(sb->s_dev), yaffs_devname(sb, devname_buf)));
// Check it's an mtd device.....
if(MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
!mtd->block_markbad ||
!mtd->read ||
!mtd->write ||
-#ifndef CONFIG_YAFFS_USE_OLD_MTD
!mtd->write_ecc ||
!mtd->read_ecc ||
-#endif
!mtd->read_oob ||
!mtd->write_oob )
{
if(!mtd->erase ||
!mtd->read ||
!mtd->write ||
-#ifndef CONFIG_YAFFS_USE_OLD_MTD
!mtd->write_ecc ||
!mtd->read_ecc ||
-#endif
!mtd->read_oob ||
!mtd->write_oob )
{
// like it has the right capabilities
// Set the yaffs_Device up for mtd
-//#if defined(CONFIG_KERNEL_2_5)
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL);
#else
#ifdef CONFIG_YAFFS_USE_NANDECC
dev->useNANDECC = 1;
-#endif
#endif
}
-#ifdef CONFIG_YAFFS_MTD_ENABLED
+#ifdef CONFIG_YAFFS_YAFFS1
#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(1,0,sb,data,silent) ? 0 : -1;
+ return yaffs_internal_read_super(1,sb,data,silent) ? 0 : -1;
}
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);
}
-/* changes NCB 2.5.70 */
-//static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
static struct file_system_type yaffs_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs",
.get_sb = yaffs_read_super,
.kill_sb = kill_block_super,
-// .kill_sb = kill_litter_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(1,0,sb,data,silent);
+ return yaffs_internal_read_super(1,sb,data,silent);
}
static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
#endif
-#endif // CONFIG_YAFFS_MTD_ENABLED
+#endif // CONFIG_YAFFS_YAFFS1
-#ifdef CONFIG_YAFFS2_MTD_ENABLED
+#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(2,0,sb,data,silent) ? 0 : -1;
+ return yaffs_internal_read_super(2,sb,data,silent) ? 0 : -1;
}
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);
}
-/* changes NCB 2.5.70 */
-//static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
static struct file_system_type yaffs2_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs2",
.get_sb = yaffs2_read_super,
.kill_sb = kill_block_super,
-// .kill_sb = kill_litter_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(2,0,sb,data,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_YAFFS2_MTD_ENABLED
-
-
-#ifdef CONFIG_YAFFS_RAM_ENABLED
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-static int yaffs_internal_read_super_ram(struct super_block * sb, void * data, int silent)
-{
- return yaffs_internal_read_super(1,1,sb,data,silent) ? 0 : -1;
-}
-
-static struct super_block *yaffs_ram_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
-{
-
- return get_sb_nodev(fs, flags, data, yaffs_internal_read_super_ram);
-}
-
-
-static struct file_system_type yaffs_ram_fs_type = {
- .owner = THIS_MODULE,
- .name = "yaffsram",
- .get_sb = yaffs_ram_read_super,
- .kill_sb = kill_litter_super,
- .fs_flags = 0 ,
-};
-#else
-static struct super_block *yaffs_ram_read_super(struct super_block * sb, void * data, int silent)
-{
- return yaffs_internal_read_super(1,1,sb,data,silent);
-}
-
-static DECLARE_FSTYPE(yaffs_ram_fs_type, "yaffsram", yaffs_ram_read_super, FS_SINGLE);
-#endif
-
-#endif // CONFIG_YAFFS_RAM_ENABLED
-
-#ifdef CONFIG_YAFFS2_RAM_ENABLED
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-static int yaffs2_internal_read_super_ram(struct super_block * sb, void * data, int silent)
-{
- return yaffs_internal_read_super(2,1,sb,data,silent) ? 0 : -1;
-}
-
-static struct super_block *yaffs2_ram_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data)
-{
-
- return get_sb_nodev(fs, flags, data, yaffs2_internal_read_super_ram);
-}
-
-
-static struct file_system_type yaffs2_ram_fs_type = {
- .owner = THIS_MODULE,
- .name = "yaffs2ram",
- .get_sb = yaffs2_ram_read_super,
- .kill_sb = kill_litter_super,
- .fs_flags = 0 ,
-};
-#else
-static struct super_block *yaffs2_ram_read_super(struct super_block * sb, void * data, int silent)
-{
- return yaffs_internal_read_super(2,1,sb,data,silent);
-}
-
-static DECLARE_FSTYPE(yaffs2_ram_fs_type, "yaffs2ram", yaffs2_ram_read_super, FS_SINGLE);
-#endif
+#endif // CONFIG_YAFFS_YAFFS2
-#endif // CONFIG_YAFFS2_RAM_ENABLED
static struct proc_dir_entry *my_proc_entry;
-static struct proc_dir_entry *my_proc_ram_write_entry;
static char * yaffs_dump_dev(char *buf,yaffs_Device *dev)
{
return buf-page < count ? buf-page : count;
}
-static int yaffs_proc_ram_write(
- char *page,
- char **start,
- off_t offset,
- int count,
- int *eof,
- void *data
- )
-{
-
- printk(KERN_DEBUG "yaffs write size %d\n",count);
- return count;
-}
-
-
-
// Stuff to handle installation of file systems
struct file_system_to_install
{
static struct file_system_to_install fs_to_install[] =
{
-#ifdef CONFIG_YAFFS_RAM_ENABLED
- { &yaffs_ram_fs_type, 0},
-#endif
-#ifdef CONFIG_YAFFS2_RAM_ENABLED
- { &yaffs2_ram_fs_type,0},
-#endif
-#ifdef CONFIG_YAFFS_MTD_ENABLED
+#ifdef CONFIG_YAFFS_YAFFS1
{ &yaffs_fs_type,0},
#endif
-#ifdef CONFIG_YAFFS2_MTD_ENABLED
+#ifdef CONFIG_YAFFS_YAFFS2
{ &yaffs2_fs_type,0},
#endif
{ NULL,0}
projects / yaffs2.git / blobdiff