* 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.
* * Some code bodily lifted from JFFS2.
*/
-const char *yaffs_fs_c_version = "$Id: yaffs_fs.c,v 1.23 2003-01-17 04:19:08 charles Exp $";
+const char *yaffs_fs_c_version = "$Id: yaffs_fs.c,v 1.30 2003-09-20 01:13:48 charles Exp $";
extern const char *yaffs_guts_c_version;
#include <linux/mtd/mtd.h>
#include <linux/interrupt.h>
#include <linux/string.h>
+
+
+#if defined(CONFIG_KERNEL_2_5)
+#include <linux/statfs.h> /* Added NCB 15-8-2003 */
+#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))
+#else
#include <linux/locks.h>
+#endif
+
#include <asm/uaccess.h>
#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip))
#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
-#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
+//NCB #define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
+#if defined(CONFIG_KERNEL_2_5)
+#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info)
+#else
+#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
+#endif
static void yaffs_put_super(struct super_block *sb);
static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
+#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
+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);
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)
+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 defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
+#else
static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+#endif
static void yaffs_read_inode (struct inode *inode);
+
+#if defined(CONFIG_KERNEL_2_5)
+static struct super_block *yaffs_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data);
+#else
static struct super_block *yaffs_read_super(struct super_block * sb, void * data, int silent);
+#endif
+
static void yaffs_put_inode (struct inode *inode);
static void yaffs_delete_inode(struct inode *);
static void yaffs_clear_inode(struct inode *);
/*
* Lookup is used to find objects in the fs
*/
+#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
+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;
+ struct inode *inode = NULL; // NCB 2.5/2.6 needs NULL here
yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev;
if(inode)
{
T(YAFFS_TRACE_OS,(KERN_DEBUG"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
//dget(dentry); // try to solve directory bug
d_add(dentry,inode);
// return dentry;
return NULL;
+#endif
}
}
}
yaffs_GrossUnlock(dev);
+
+/* added NCB for 2.5/6 compatability - forces add even if inode is NULL which creates dentry hash*/
+ d_add(dentry,inode);
return NULL;
// return (ERR_PTR(-EIO));
inode->i_uid = obj->st_uid;
inode->i_gid = obj->st_gid;
inode->i_blksize = inode->i_sb->s_blocksize;
- inode->i_blocks = 0;
- inode->i_rdev = obj->st_rdev;;
+#if defined(CONFIG_KERNEL_2_5)
+ inode->i_rdev = to_kdev_t(obj->st_rdev);
+ inode->i_atime.tv_sec = (time_t)(obj->st_atime);
+ inode->i_atime.tv_nsec = 0;
+ inode->i_mtime.tv_sec = (time_t)obj->st_mtime;
+ inode->i_mtime.tv_nsec =0;
+ inode->i_ctime.tv_sec = (time_t)obj->st_ctime;
+ inode->i_ctime.tv_nsec = 0;
+#else
+ inode->i_rdev = obj->st_rdev;
inode->i_atime = obj->st_atime;
inode->i_mtime = obj->st_mtime;
inode->i_ctime = obj->st_ctime;
+#endif
inode->i_size = yaffs_GetObjectFileLength(obj);
+ inode->i_blocks = (inode->i_size + 511) >> 9;
+
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",
switch (obj->st_mode & S_IFMT)
{
default: // fifo, device or socket
- init_special_inode(inode, obj->st_mode, obj->st_rdev);
+ init_special_inode(inode, obj->st_mode,(dev_t)(obj->st_rdev));
break;
case S_IFREG: // file
inode->i_op = &yaffs_file_inode_operations;
if(ipos > inode->i_size)
{
inode->i_size = ipos;
- inode->i_blocks = (ipos + inode->i_blksize - 1)/ inode->i_blksize;
+ 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)));
}
/*
* File creation. Allocate an inode, and we're done..
*/
+#if defined(CONFIG_KERNEL_2_5)
+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;
return retVal;
}
+#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
+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,(KERN_DEBUG"yaffs_create\n"));
return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
return error;
}
+#if defined(CONFIG_KERNEL_2_5) /* Added NCB 185-8-2003 */
+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+#else
static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
+#endif
{
yaffs_Device *dev = yaffs_SuperToDevice(sb);
T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_statfs\n"));
T(YAFFS_TRACE_OS,("yaffs_read_super: %s block size %d\n", useRam ? "RAM" : "MTD",(int)(sb->s_blocksize)));
#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY
- T(YAFFS_TRACE_OS,("yaffs: Write verification disabled. All guarantees null and void\n");
+ T(YAFFS_TRACE_OS,("yaffs: Write verification disabled. All guarantees null and void\n"));
#endif
dev->endBlock = nBlocks - 1;
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->nReservedBlocks = 5;
dev->writeChunkToNAND = nandemul_WriteChunkToNAND;
dev->readChunkFromNAND = nandemul_ReadChunkFromNAND;
printk(KERN_DEBUG "yaffs: Attempting MTD mount on %u.%u, \"%s\"\n",
MAJOR(sb->s_dev),MINOR(sb->s_dev),kdevname(sb->s_dev));
- // Hope it's a NAND mtd
+ // Check it's an mtd device.....
+ if(MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
+ {
+ return NULL; // This isn't an mtd device
+ }
+
+ // Get the device
mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
if (!mtd)
{
return NULL;
}
+ // Check it's NAND
if(mtd->type != MTD_NANDFLASH)
{
printk(KERN_DEBUG "yaffs: MTD device is not NAND it's type %d\n", mtd->type);
// like it has the right capabilities
// Set the yaffs_Device up for ram emulation
+#if defined(CONFIG_KERNEL_2_5)
+ 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
dev->endBlock = nBlocks - 1;
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
dev->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->nReservedBlocks = 5;
+ dev->nShortOpCaches = 10; // Enable short op caching
// ... and the functions.
if (!inode)
return NULL;
+
+// added NCB
+ inode->i_op = & yaffs_dir_inode_operations;
+ inode->i_fop = & yaffs_dir_operations;
T(YAFFS_TRACE_OS,("yaffs_read_super: got root inode\n"));
return sb;
}
+static int yaffs_internal_read_super_ram(struct super_block * sb, void * data, int silent)
+{
+ return yaffs_internal_read_super(1,sb,data,silent) ? 0 : -1;
+}
+static int yaffs_internal_read_super_mtd(struct super_block * sb, void * data, int silent)
+{
+ return yaffs_internal_read_super(0,sb,data,silent) ? 0 : -1;
+}
+
+
#ifdef CONFIG_YAFFS_MTD_ENABLED
+#if defined(CONFIG_KERNEL_2_5)
+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(0,sb,data,silent);
static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV);
#endif
+#endif
#ifdef CONFIG_YAFFS_RAM_ENABLED
+#if defined(CONFIG_KERNEL_2_5)
+static struct super_block *yaffs_ram_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_ram);
+}
+
+/* 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 = "yaffsram",
+ .get_sb = yaffs_ram_read_super,
+// .kill_sb = kill_block_super,
+ .kill_sb = kill_litter_super,
+ .fs_flags = FS_SINGLE,
+};
+#else
static struct super_block *yaffs_ram_read_super(struct super_block * sb, void * data, int silent)
{
return yaffs_internal_read_super(1,sb,data,silent);
}
static DECLARE_FSTYPE(yaffs_ram_fs_type, "yaffsram", yaffs_ram_read_super, FS_SINGLE);
+#endif
#endif // CONFIG_YAFFS_RAM_ENABLED
projects / yaffs / .git / blobdiff