95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* ocfs1_fs_compat.h
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*
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* OCFS1 volume header definitions. OCFS2 creates valid but unmountable
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* OCFS1 volume headers on the first two sectors of an OCFS2 volume.
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* This allows an OCFS1 volume to see the partition and cleanly fail to
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* mount it.
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*/
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#ifndef _OCFS1_FS_COMPAT_H
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#define _OCFS1_FS_COMPAT_H
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#define OCFS1_MAX_VOL_SIGNATURE_LEN 128
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#define OCFS1_MAX_MOUNT_POINT_LEN 128
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#define OCFS1_MAX_VOL_ID_LENGTH 16
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#define OCFS1_MAX_VOL_LABEL_LEN 64
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#define OCFS1_MAX_CLUSTER_NAME_LEN 64
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#define OCFS1_MAJOR_VERSION (2)
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#define OCFS1_MINOR_VERSION (0)
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#define OCFS1_VOLUME_SIGNATURE "OracleCFS"
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/*
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* OCFS1 superblock. Lives at sector 0.
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*/
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struct ocfs1_vol_disk_hdr
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{
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/*00*/ __u32 minor_version;
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__u32 major_version;
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/*08*/ __u8 signature[OCFS1_MAX_VOL_SIGNATURE_LEN];
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/*88*/ __u8 mount_point[OCFS1_MAX_MOUNT_POINT_LEN];
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/*108*/ __u64 serial_num;
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/*110*/ __u64 device_size;
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__u64 start_off;
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/*120*/ __u64 bitmap_off;
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__u64 publ_off;
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/*130*/ __u64 vote_off;
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__u64 root_bitmap_off;
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/*140*/ __u64 data_start_off;
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__u64 root_bitmap_size;
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/*150*/ __u64 root_off;
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__u64 root_size;
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/*160*/ __u64 cluster_size;
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__u64 num_nodes;
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/*170*/ __u64 num_clusters;
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__u64 dir_node_size;
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/*180*/ __u64 file_node_size;
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__u64 internal_off;
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/*190*/ __u64 node_cfg_off;
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__u64 node_cfg_size;
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/*1A0*/ __u64 new_cfg_off;
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__u32 prot_bits;
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__s32 excl_mount;
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/*1B0*/
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};
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struct ocfs1_disk_lock
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{
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/*00*/ __u32 curr_master;
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__u8 file_lock;
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__u8 compat_pad[3]; /* Not in original definition. Used to
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make the already existing alignment
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explicit */
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__u64 last_write_time;
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/*10*/ __u64 last_read_time;
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__u32 writer_node_num;
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__u32 reader_node_num;
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/*20*/ __u64 oin_node_map;
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__u64 dlock_seq_num;
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/*30*/
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};
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/*
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* OCFS1 volume label. Lives at sector 1.
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*/
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struct ocfs1_vol_label
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{
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/*00*/ struct ocfs1_disk_lock disk_lock;
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/*30*/ __u8 label[OCFS1_MAX_VOL_LABEL_LEN];
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/*70*/ __u16 label_len;
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/*72*/ __u8 vol_id[OCFS1_MAX_VOL_ID_LENGTH];
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/*82*/ __u16 vol_id_len;
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/*84*/ __u8 cluster_name[OCFS1_MAX_CLUSTER_NAME_LEN];
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/*A4*/ __u16 cluster_name_len;
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/*A6*/
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};
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#endif /* _OCFS1_FS_COMPAT_H */
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