/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* * efs_fs_sb.h * * Copyright (c) 1999 Al Smith * * Portions derived from IRIX header files (c) 1988 Silicon Graphics */ #ifndef __EFS_FS_SB_H__#define __EFS_FS_SB_H__ #include <linux/types.h>#include <linux/magic.h> /* EFS superblock magic numbers */#define EFS_MAGIC	0x072959#define EFS_NEWMAGIC	0x07295a #define IS_EFS_MAGIC(x)	((x == EFS_MAGIC) || (x == EFS_NEWMAGIC)) #define EFS_SUPER		1#define EFS_ROOTINODE		2 /* efs superblock on disk */struct efs_super {	__be32		fs_size;        /* size of filesystem, in sectors */	__be32		fs_firstcg;     /* bb offset to first cg */	__be32		fs_cgfsize;     /* size of cylinder group in bb's */	__be16		fs_cgisize;     /* bb's of inodes per cylinder group */	__be16		fs_sectors;     /* sectors per track */	__be16		fs_heads;       /* heads per cylinder */	__be16		fs_ncg;         /* # of cylinder groups in filesystem */	__be16		fs_dirty;       /* fs needs to be fsck'd */	__be32		fs_time;        /* last super-block update */	__be32		fs_magic;       /* magic number */	char		fs_fname[6];    /* file system name */	char		fs_fpack[6];    /* file system pack name */	__be32		fs_bmsize;      /* size of bitmap in bytes */	__be32		fs_tfree;       /* total free data blocks */	__be32		fs_tinode;      /* total free inodes */	__be32		fs_bmblock;     /* bitmap location. */	__be32		fs_replsb;      /* Location of replicated superblock. */	__be32		fs_lastialloc;  /* last allocated inode */	char		fs_spare[20];   /* space for expansion - MUST BE ZERO */	__be32		fs_checksum;    /* checksum of volume portion of fs */}; /* efs superblock information in memory */struct efs_sb_info {	__u32	fs_magic;	/* superblock magic number */	__u32	fs_start;	/* first block of filesystem */	__u32	first_block;	/* first data block in filesystem */	__u32	total_blocks;	/* total number of blocks in filesystem */	__u32	group_size;	/* # of blocks a group consists of */ 	__u32	data_free;	/* # of free data blocks */	__u32	inode_free;	/* # of free inodes */	__u16	inode_blocks;	/* # of blocks used for inodes in every grp */	__u16	total_groups;	/* # of groups */}; #endif /* __EFS_FS_SB_H__ */