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fs/ocfs2/ocfs1_fs_compat.h 2.92 KB
ccd979bdb   Mark Fasheh   [PATCH] OCFS2: Th...
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  /* -*- mode: c; c-basic-offset: 8; -*-
   * vim: noexpandtab sw=8 ts=8 sts=0:
   *
   * ocfs1_fs_compat.h
   *
   * OCFS1 volume header definitions.  OCFS2 creates valid but unmountable
   * OCFS1 volume headers on the first two sectors of an OCFS2 volume.
   * This allows an OCFS1 volume to see the partition and cleanly fail to
   * mount it.
   *
   * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public
   * License, version 2,  as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   *
   * You should have received a copy of the GNU General Public
   * License along with this program; if not, write to the
   * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   * Boston, MA 021110-1307, USA.
   */
  
  #ifndef _OCFS1_FS_COMPAT_H
  #define _OCFS1_FS_COMPAT_H
  
  #define OCFS1_MAX_VOL_SIGNATURE_LEN          128
  #define OCFS1_MAX_MOUNT_POINT_LEN            128
  #define OCFS1_MAX_VOL_ID_LENGTH               16
  #define OCFS1_MAX_VOL_LABEL_LEN               64
  #define OCFS1_MAX_CLUSTER_NAME_LEN            64
  
  #define OCFS1_MAJOR_VERSION              (2)
  #define OCFS1_MINOR_VERSION              (0)
  #define OCFS1_VOLUME_SIGNATURE		 "OracleCFS"
  
  /*
   * OCFS1 superblock.  Lives at sector 0.
   */
  struct ocfs1_vol_disk_hdr
  {
  /*00*/	__u32 minor_version;
  	__u32 major_version;
  /*08*/	__u8 signature[OCFS1_MAX_VOL_SIGNATURE_LEN];
  /*88*/	__u8 mount_point[OCFS1_MAX_MOUNT_POINT_LEN];
  /*108*/	__u64 serial_num;
  /*110*/	__u64 device_size;
  	__u64 start_off;
  /*120*/	__u64 bitmap_off;
  	__u64 publ_off;
  /*130*/	__u64 vote_off;
  	__u64 root_bitmap_off;
  /*140*/	__u64 data_start_off;
  	__u64 root_bitmap_size;
  /*150*/	__u64 root_off;
  	__u64 root_size;
  /*160*/	__u64 cluster_size;
  	__u64 num_nodes;
  /*170*/	__u64 num_clusters;
  	__u64 dir_node_size;
  /*180*/	__u64 file_node_size;
  	__u64 internal_off;
  /*190*/	__u64 node_cfg_off;
  	__u64 node_cfg_size;
  /*1A0*/	__u64 new_cfg_off;
  	__u32 prot_bits;
  	__s32 excl_mount;
  /*1B0*/
  };
  
  
  struct ocfs1_disk_lock
  {
  /*00*/	__u32 curr_master;
  	__u8 file_lock;
c78bad11f   Joe Perches   fs/: Spelling fixes
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  	__u8 compat_pad[3];  /* Not in original definition.  Used to
ccd979bdb   Mark Fasheh   [PATCH] OCFS2: Th...
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  				make the already existing alignment
  				explicit */
  	__u64 last_write_time;
  /*10*/	__u64 last_read_time;
  	__u32 writer_node_num;
  	__u32 reader_node_num;
  /*20*/	__u64 oin_node_map;
  	__u64 dlock_seq_num;
  /*30*/
  };
  
  /*
   * OCFS1 volume label.  Lives at sector 1.
   */
  struct ocfs1_vol_label
  {
  /*00*/	struct ocfs1_disk_lock disk_lock;
  /*30*/	__u8 label[OCFS1_MAX_VOL_LABEL_LEN];
  /*70*/	__u16 label_len;
  /*72*/	__u8 vol_id[OCFS1_MAX_VOL_ID_LENGTH];
  /*82*/	__u16 vol_id_len;
  /*84*/	__u8 cluster_name[OCFS1_MAX_CLUSTER_NAME_LEN];
  /*A4*/	__u16 cluster_name_len;
  /*A6*/
  };
  
  
  #endif /* _OCFS1_FS_COMPAT_H */