/* SPDX-License-Identifier: GPL-2.0-only */ /* -*- 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. */ #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; __u8 compat_pad[3]; /* Not in original definition. Used to 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 */