cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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efs_fs_sb.h (2227B)


      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2/*
      3 * efs_fs_sb.h
      4 *
      5 * Copyright (c) 1999 Al Smith
      6 *
      7 * Portions derived from IRIX header files (c) 1988 Silicon Graphics
      8 */
      9
     10#ifndef __EFS_FS_SB_H__
     11#define __EFS_FS_SB_H__
     12
     13#include <linux/types.h>
     14#include <linux/magic.h>
     15
     16/* EFS superblock magic numbers */
     17#define EFS_MAGIC	0x072959
     18#define EFS_NEWMAGIC	0x07295a
     19
     20#define IS_EFS_MAGIC(x)	((x == EFS_MAGIC) || (x == EFS_NEWMAGIC))
     21
     22#define EFS_SUPER		1
     23#define EFS_ROOTINODE		2
     24
     25/* efs superblock on disk */
     26struct efs_super {
     27	__be32		fs_size;        /* size of filesystem, in sectors */
     28	__be32		fs_firstcg;     /* bb offset to first cg */
     29	__be32		fs_cgfsize;     /* size of cylinder group in bb's */
     30	__be16		fs_cgisize;     /* bb's of inodes per cylinder group */
     31	__be16		fs_sectors;     /* sectors per track */
     32	__be16		fs_heads;       /* heads per cylinder */
     33	__be16		fs_ncg;         /* # of cylinder groups in filesystem */
     34	__be16		fs_dirty;       /* fs needs to be fsck'd */
     35	__be32		fs_time;        /* last super-block update */
     36	__be32		fs_magic;       /* magic number */
     37	char		fs_fname[6];    /* file system name */
     38	char		fs_fpack[6];    /* file system pack name */
     39	__be32		fs_bmsize;      /* size of bitmap in bytes */
     40	__be32		fs_tfree;       /* total free data blocks */
     41	__be32		fs_tinode;      /* total free inodes */
     42	__be32		fs_bmblock;     /* bitmap location. */
     43	__be32		fs_replsb;      /* Location of replicated superblock. */
     44	__be32		fs_lastialloc;  /* last allocated inode */
     45	char		fs_spare[20];   /* space for expansion - MUST BE ZERO */
     46	__be32		fs_checksum;    /* checksum of volume portion of fs */
     47};
     48
     49/* efs superblock information in memory */
     50struct efs_sb_info {
     51	__u32	fs_magic;	/* superblock magic number */
     52	__u32	fs_start;	/* first block of filesystem */
     53	__u32	first_block;	/* first data block in filesystem */
     54	__u32	total_blocks;	/* total number of blocks in filesystem */
     55	__u32	group_size;	/* # of blocks a group consists of */ 
     56	__u32	data_free;	/* # of free data blocks */
     57	__u32	inode_free;	/* # of free inodes */
     58	__u16	inode_blocks;	/* # of blocks used for inodes in every grp */
     59	__u16	total_groups;	/* # of groups */
     60};
     61
     62#endif /* __EFS_FS_SB_H__ */
     63