cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

omfs_fs.h (2536B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _OMFS_FS_H
      3#define _OMFS_FS_H
      4
      5/* OMFS On-disk structures */
      6
      7#define OMFS_MAGIC 0xC2993D87
      8#define OMFS_IMAGIC 0xD2
      9
     10#define OMFS_DIR 'D'
     11#define OMFS_FILE 'F'
     12#define OMFS_INODE_NORMAL 'e'
     13#define OMFS_INODE_CONTINUATION 'c'
     14#define OMFS_INODE_SYSTEM 's'
     15#define OMFS_NAMELEN 256
     16#define OMFS_DIR_START 0x1b8
     17#define OMFS_EXTENT_START 0x1d0
     18#define OMFS_EXTENT_CONT 0x40
     19#define OMFS_XOR_COUNT 19
     20#define OMFS_MAX_BLOCK_SIZE 8192
     21#define OMFS_MAX_CLUSTER_SIZE 8
     22#define OMFS_MAX_BLOCKS (1ul << 31)
     23
     24struct omfs_super_block {
     25	char s_fill1[256];
     26	__be64 s_root_block;		/* block number of omfs_root_block */
     27	__be64 s_num_blocks;		/* total number of FS blocks */
     28	__be32 s_magic;			/* OMFS_MAGIC */
     29	__be32 s_blocksize;		/* size of a block */
     30	__be32 s_mirrors;		/* # of mirrors of system blocks */
     31	__be32 s_sys_blocksize;		/* size of non-data blocks */
     32};
     33
     34struct omfs_header {
     35	__be64 h_self;			/* FS block where this is located */
     36	__be32 h_body_size;		/* size of useful data after header */
     37	__be16 h_crc;			/* crc-ccitt of body_size bytes */
     38	char h_fill1[2];
     39	u8 h_version;			/* version, always 1 */
     40	char h_type;			/* OMFS_INODE_X */
     41	u8 h_magic;			/* OMFS_IMAGIC */
     42	u8 h_check_xor;			/* XOR of header bytes before this */
     43	__be32 h_fill2;
     44};
     45
     46struct omfs_root_block {
     47	struct omfs_header r_head;	/* header */
     48	__be64 r_fill1;
     49	__be64 r_num_blocks;		/* total number of FS blocks */
     50	__be64 r_root_dir;		/* block # of root directory */
     51	__be64 r_bitmap;		/* block # of free space bitmap */
     52	__be32 r_blocksize;		/* size of a block */
     53	__be32 r_clustersize;		/* size allocated for data blocks */
     54	__be64 r_mirrors;		/* # of mirrors of system blocks */
     55	char r_name[OMFS_NAMELEN];	/* partition label */
     56};
     57
     58struct omfs_inode {
     59	struct omfs_header i_head;	/* header */
     60	__be64 i_parent;		/* parent containing this inode */
     61	__be64 i_sibling;		/* next inode in hash bucket */
     62	__be64 i_ctime;			/* ctime, in milliseconds */
     63	char i_fill1[35];
     64	char i_type;			/* OMFS_[DIR,FILE] */
     65	__be32 i_fill2;
     66	char i_fill3[64];
     67	char i_name[OMFS_NAMELEN];	/* filename */
     68	__be64 i_size;			/* size of file, in bytes */
     69};
     70
     71struct omfs_extent_entry {
     72	__be64 e_cluster;		/* start location of a set of blocks */
     73	__be64 e_blocks;		/* number of blocks after e_cluster */
     74};
     75
     76struct omfs_extent {
     77	__be64 e_next;			/* next extent table location */
     78	__be32 e_extent_count;		/* total # extents in this table */
     79	__be32 e_fill;
     80	struct omfs_extent_entry e_entry;	/* start of extent entries */
     81};
     82
     83#endif