fs/ntfs/ntfs.h

   1 /*
   2  * ntfs.h - Defines for NTFS Linux kernel driver. Part of the Linux-NTFS
   3  *          project.
   4  *
   5  * Copyright (c) 2001-2004 Anton Altaparmakov
   6  * Copyright (C) 2002 Richard Russon
   7  *
   8  * This program/include file is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as published
  10  * by the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program/include file is distributed in the hope that it will be
  14  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program (in the main directory of the Linux-NTFS
  20  * distribution in the file COPYING); if not, write to the Free Software
  21  * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #ifndef _LINUX_NTFS_H
  25 #define _LINUX_NTFS_H
  26
  27 #include <linux/stddef.h>
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/compiler.h>
  31 #include <linux/fs.h>
  32 #include <linux/nls.h>
  33 #include <linux/smp.h>
  34
  35 #include "types.h"
  36 #include "volume.h"
  37 #include "layout.h"
  38
  39 typedef enum {
  40         NTFS_BLOCK_SIZE         = 512,
  41         NTFS_BLOCK_SIZE_BITS    = 9,
  42         NTFS_SB_MAGIC           = 0x5346544e,   /* 'NTFS' */
  43         NTFS_MAX_NAME_LEN       = 255,
  44 } NTFS_CONSTANTS;
  45
  46 /* Global variables. */
  47
  48 /* Slab caches (from super.c). */
  49 extern kmem_cache_t *ntfs_name_cache;
  50 extern kmem_cache_t *ntfs_inode_cache;
  51 extern kmem_cache_t *ntfs_big_inode_cache;
  52 extern kmem_cache_t *ntfs_attr_ctx_cache;
  53 extern kmem_cache_t *ntfs_index_ctx_cache;
  54
  55 /* The various operations structs defined throughout the driver files. */
  56 extern struct address_space_operations ntfs_aops;
  57 extern struct address_space_operations ntfs_mst_aops;
  58
  59 extern struct  file_operations ntfs_file_ops;
  60 extern struct inode_operations ntfs_file_inode_ops;
  61
  62 extern struct  file_operations ntfs_dir_ops;
  63 extern struct inode_operations ntfs_dir_inode_ops;
  64
  65 extern struct  file_operations ntfs_empty_file_ops;
  66 extern struct inode_operations ntfs_empty_inode_ops;
  67
  68 /**
  69  * NTFS_SB - return the ntfs volume given a vfs super block
  70  * @sb:         VFS super block
  71  *
  72  * NTFS_SB() returns the ntfs volume associated with the VFS super block @sb.
  73  */
  74 static inline ntfs_volume *NTFS_SB(struct super_block *sb)
  75 {
  76         return sb->s_fs_info;
  77 }
  78
  79 /* Declarations of functions and global variables. */
  80
  81 /* From fs/ntfs/compress.c */
  82 extern int ntfs_read_compressed_block(struct page *page);
  83 extern int allocate_compression_buffers(void);
  84 extern void free_compression_buffers(void);
  85
  86 /* From fs/ntfs/super.c */
  87 #define default_upcase_len 0x10000
  88 extern struct semaphore ntfs_lock;
  89
  90 typedef struct {
  91         int val;
  92         char *str;
  93 } option_t;
  94 extern const option_t on_errors_arr[];
  95
  96 /* From fs/ntfs/mst.c */
  97 extern int post_read_mst_fixup(NTFS_RECORD *b, const u32 size);
  98 extern int pre_write_mst_fixup(NTFS_RECORD *b, const u32 size);
  99 extern void post_write_mst_fixup(NTFS_RECORD *b);
 100
 101 /* From fs/ntfs/unistr.c */
 102 extern BOOL ntfs_are_names_equal(const ntfschar *s1, size_t s1_len,
 103                 const ntfschar *s2, size_t s2_len,
 104                 const IGNORE_CASE_BOOL ic,
 105                 const ntfschar *upcase, const u32 upcase_size);
 106 extern int ntfs_collate_names(const ntfschar *name1, const u32 name1_len,
 107                 const ntfschar *name2, const u32 name2_len,
 108                 const int err_val, const IGNORE_CASE_BOOL ic,
 109                 const ntfschar *upcase, const u32 upcase_len);
 110 extern int ntfs_ucsncmp(const ntfschar *s1, const ntfschar *s2, size_t n);
 111 extern int ntfs_ucsncasecmp(const ntfschar *s1, const ntfschar *s2, size_t n,
 112                 const ntfschar *upcase, const u32 upcase_size);
 113 extern void ntfs_upcase_name(ntfschar *name, u32 name_len,
 114                 const ntfschar *upcase, const u32 upcase_len);
 115 extern void ntfs_file_upcase_value(FILE_NAME_ATTR *file_name_attr,
 116                 const ntfschar *upcase, const u32 upcase_len);
 117 extern int ntfs_file_compare_values(FILE_NAME_ATTR *file_name_attr1,
 118                 FILE_NAME_ATTR *file_name_attr2,
 119                 const int err_val, const IGNORE_CASE_BOOL ic,
 120                 const ntfschar *upcase, const u32 upcase_len);
 121 extern int ntfs_nlstoucs(const ntfs_volume *vol, const char *ins,
 122                 const int ins_len, ntfschar **outs);
 123 extern int ntfs_ucstonls(const ntfs_volume *vol, const ntfschar *ins,
 124                 const int ins_len, unsigned char **outs, int outs_len);
 125
 126 /* From fs/ntfs/upcase.c */
 127 extern ntfschar *generate_default_upcase(void);
 128
 129 #endif /* _LINUX_NTFS_H */