* ntfs.h - Defines for NTFS Linux kernel driver. Part of the Linux-NTFS
* project.
*
- * Copyright (c) 2001-2004 Anton Altaparmakov
+ * Copyright (c) 2001-2005 Anton Altaparmakov
* Copyright (C) 2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
#include <linux/fs.h>
#include <linux/nls.h>
#include <linux/smp.h>
+#include <linux/pagemap.h>
#include "types.h"
#include "volume.h"
NTFS_BLOCK_SIZE_BITS = 9,
NTFS_SB_MAGIC = 0x5346544e, /* 'NTFS' */
NTFS_MAX_NAME_LEN = 255,
+ NTFS_MAX_ATTR_NAME_LEN = 255,
+ NTFS_MAX_CLUSTER_SIZE = 64 * 1024, /* 64kiB */
+ NTFS_MAX_PAGES_PER_CLUSTER = NTFS_MAX_CLUSTER_SIZE / PAGE_CACHE_SIZE,
} NTFS_CONSTANTS;
/* Global variables. */
/* Slab caches (from super.c). */
-extern kmem_cache_t *ntfs_name_cache;
-extern kmem_cache_t *ntfs_inode_cache;
-extern kmem_cache_t *ntfs_big_inode_cache;
-extern kmem_cache_t *ntfs_attr_ctx_cache;
-extern kmem_cache_t *ntfs_index_ctx_cache;
+extern struct kmem_cache *ntfs_name_cache;
+extern struct kmem_cache *ntfs_inode_cache;
+extern struct kmem_cache *ntfs_big_inode_cache;
+extern struct kmem_cache *ntfs_attr_ctx_cache;
+extern struct kmem_cache *ntfs_index_ctx_cache;
/* The various operations structs defined throughout the driver files. */
-extern struct address_space_operations ntfs_aops;
-extern struct address_space_operations ntfs_mst_aops;
+extern const struct address_space_operations ntfs_aops;
+extern const struct address_space_operations ntfs_mst_aops;
-extern struct file_operations ntfs_file_ops;
+extern const struct file_operations ntfs_file_ops;
extern struct inode_operations ntfs_file_inode_ops;
-extern struct file_operations ntfs_dir_ops;
+extern const struct file_operations ntfs_dir_ops;
extern struct inode_operations ntfs_dir_inode_ops;
-extern struct file_operations ntfs_empty_file_ops;
+extern const struct file_operations ntfs_empty_file_ops;
extern struct inode_operations ntfs_empty_inode_ops;
+extern struct export_operations ntfs_export_ops;
+
/**
* NTFS_SB - return the ntfs volume given a vfs super block
* @sb: VFS super block
/* From fs/ntfs/super.c */
#define default_upcase_len 0x10000
-extern struct semaphore ntfs_lock;
+extern struct mutex ntfs_lock;
typedef struct {
int val;
extern void post_write_mst_fixup(NTFS_RECORD *b);
/* From fs/ntfs/unistr.c */
-extern BOOL ntfs_are_names_equal(const ntfschar *s1, size_t s1_len,
+extern bool ntfs_are_names_equal(const ntfschar *s1, size_t s1_len,
const ntfschar *s2, size_t s2_len,
const IGNORE_CASE_BOOL ic,
const ntfschar *upcase, const u32 upcase_size);
/* From fs/ntfs/upcase.c */
extern ntfschar *generate_default_upcase(void);
+static inline int ntfs_ffs(int x)
+{
+ int r = 1;
+
+ if (!x)
+ return 0;
+ if (!(x & 0xffff)) {
+ x >>= 16;
+ r += 16;
+ }
+ if (!(x & 0xff)) {
+ x >>= 8;
+ r += 8;
+ }
+ if (!(x & 0xf)) {
+ x >>= 4;
+ r += 4;
+ }
+ if (!(x & 3)) {
+ x >>= 2;
+ r += 2;
+ }
+ if (!(x & 1)) {
+ x >>= 1;
+ r += 1;
+ }
+ return r;
+}
+
#endif /* _LINUX_NTFS_H */