patch-2.1.74 linux/fs/ntfs/macros.h

• Lines: 45
• Date: Fri Dec 19 15:24:21 1997
• Orig file: v2.1.73/linux/fs/ntfs/macros.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.73/linux/fs/ntfs/macros.h linux/fs/ntfs/macros.h
@@ -0,0 +1,44 @@
+/*
+ *  macros.h
+ *
+ *  Copyright (C) 1995 Martin von Löwis
+ *  Copyright (C) 1996 Régis Duchesne
+ */
+
+#define NTFS_FD(vol)		((vol)->u.fd)
+
+/* Linux */
+#ifdef NTFS_IN_LINUX_KERNEL
+#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)     (&((ino)->u.ntfs_i))
+#else
+#define NTFS_SB(vol)		((struct super_block*)(vol)->u.sb)
+#define NTFS_SB2VOL(sb)		((ntfs_volume*)(sb)->u.generic_sbp)
+#define NTFS_INO2VOL(ino)	((ntfs_volume*)((ino)->i_sb->u.generic_sbp))
+#define NTFS_LINO2NINO(ino)     ((ntfs_inode*)((ino)->u.generic_ip))
+#endif
+
+/* BSD */
+#define NTFS_MNT(vol)		((struct mount*)(vol)->u.sb)
+#define NTFS_MNT2VOL(sb)	((ntfs_volume*)(sb)->mnt_data)
+#define NTFS_V2INO(ino)		((ntfs_inode*)((ino)->v_data))
+
+/* Classical min and max macros still missing in standard headers... */
+#define min(a,b)	((a) <= (b) ? (a) : (b))
+#define max(a,b)	((a) >= (b) ? (a) : (b))
+
+#define IS_MAGIC(a,b)		(*(int*)(a)==*(int*)(b))
+#define IS_MFT_RECORD(a)	IS_MAGIC((a),"FILE")
+#define IS_NTFS_VOLUME(a)	IS_MAGIC((a)+3,"NTFS")
+#define IS_INDEX_RECORD(a)	IS_MAGIC((a),"INDX")
+
+/* 'NTFS' in little endian */
+#define NTFS_SUPER_MAGIC	0x5346544E
+
+/*
+ * Local variables:
+ *  c-file-style: "linux"
+ * End:
+ */