Imported reiserfsprogs-3.6.20

include/reiserfs/filesystem.h

@@ -0,0 +1,73 @@
+/*
+ *  Copyright 2000-2004 by Hans Reiser, licensing governed by 
+ *  reiserfsprogs/README
+ */
+
+#ifndef REISERFS_FS_H
+#define REISERFS_FS_H
+
+#include <reiserfs/types.h>
+
+/* ReiserFS leaves the first 64k unused, so that partition labels have enough
+   space.  If someone wants to write a fancy bootloader that needs more than
+   64k, let us know, and this will be increased in size.  This number must be
+   larger than than the largest block size on any platform, or code will
+   break.  -Hans */
+#define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024)
+
+/*#define MD_RAID_SUPERBLOCKS_IN_BYTES (128 * 1024)*/
+
+/* the spot for the super in versions 3.5 - 3.5.11 (inclusive) */
+#define REISERFS_OLD_DISK_OFFSET_IN_BYTES (8 * 1024)
+
+#define reiserfs_ondisk_offset(block_of_super_block, block_size)	\
+	(block_of_super_block * block_size)
+
+#define reiserfs_new_location(block_of_super_block, block_size)		\
+    ((reiserfs_ondisk_offset(block_of_super_block, block_size) ==	\
+      REISERFS_DISK_OFFSET_IN_BYTES) ? 1 : 0)
+	
+/*only 4k blocks for old location*/
+#define reiserfs_old_location(block_of_super_block, block_size)		\
+    ((reiserfs_ondisk_offset(block_of_super_block, 4096) ==		\
+      REISERFS_OLD_DISK_OFFSET_IN_BYTES) ? 1 : 0)
+
+enum reiserfs_blktype {
+    BT_INVAL	= 0x1,
+    BT_SUPER	= 0x2,
+    BT_JOURNAL	= 0x3,
+    BT_BITMAP	= 0x4,
+    BT_UNKNOWN
+};
+
+typedef enum reiserfs_blktype reiserfs_blktype_t;
+
+extern reiserfs_filsys_t * reiserfs_fs_open (char * filename, 
+					     int flags, 
+					     int * error, 
+					     void * vp, 
+					     int skip_check);
+
+extern reiserfs_filsys_t * reiserfs_fs_create (char * filename, 
+					       int version, 
+					       unsigned long block_count,
+					       int block_size, 
+					       int default_journal, 
+					       int new_format);
+
+extern void reiserfs_fs_flush (reiserfs_filsys_t *);
+
+extern void reiserfs_fs_free (reiserfs_filsys_t *);
+
+extern void reiserfs_fs_close (reiserfs_filsys_t *);
+
+extern void reiserfs_fs_reopen (reiserfs_filsys_t *, int flags);
+
+extern int reiserfs_fs_rw (reiserfs_filsys_t * fs);
+
+extern int reiserfs_fs_blksize_check (unsigned int blocksize);
+
+extern reiserfs_blktype_t reiserfs_fs_block(reiserfs_filsys_t *fs, 
+					    unsigned long block);
+
+#endif