macros.h
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上传日期:2013-04-10
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- /*
- * macros.h
- *
- * Copyright (C) 1995 Martin von L鰓is
- * Copyright (C) 1996 R間is Duchesne
- * Copyright (c) 2001 Anton Altaparmakov
- */
- #include <linux/ntfs_fs_i.h>
- #include <linux/fs.h>
- #include <asm/page.h>
- #define NTFS_FD(vol) ((vol)->u.fd)
- #define NTFS_SB(vol) ((struct super_block*)(vol)->sb)
- #define NTFS_SB2VOL(sb) (&(sb)->u.ntfs_sb)
- #define NTFS_INO2VOL(ino) (&((ino)->i_sb->u.ntfs_sb))
- #define NTFS_LINO2NINO(ino) ((struct ntfs_inode_info*)(&((ino)->u.ntfs_i)))
- static inline struct inode *VFS_I(struct ntfs_inode_info *ntfs_ino)
- {
- struct inode *i = (struct inode*)((char*)ntfs_ino -
- ((char*)&(((struct inode*)NULL)->u.ntfs_i) -
- (char*)NULL));
- #ifdef DEBUG
- if ((char*)NTFS_LINO2NINO(i) != (char*)ntfs_ino)
- BUG();
- #endif
- return i;
- }
- #define IS_MAGIC(a,b) (*(int*)(a) == *(int*)(b))
- #define IS_MFT_RECORD(a) IS_MAGIC((a),"FILE")
- #define IS_INDEX_RECORD(a) IS_MAGIC((a),"INDX")
- /* 'NTFS' in little endian */
- #define NTFS_SUPER_MAGIC 0x5346544E
- #define NTFS_AFLAG_RO 1
- #define NTFS_AFLAG_HIDDEN 2
- #define NTFS_AFLAG_SYSTEM 4
- #define NTFS_AFLAG_ARCHIVE 20
- #define NTFS_AFLAG_COMPRESSED 0x800
- #define NTFS_AFLAG_DIR 0x10000000