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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bfs_fs.h (1905B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2/*
      3 *	include/linux/bfs_fs.h - BFS data structures on disk.
      4 *	Copyright (C) 1999-2018 Tigran Aivazian <aivazian.tigran@gmail.com>
      5 */
      6
      7#ifndef _LINUX_BFS_FS_H
      8#define _LINUX_BFS_FS_H
      9
     10#include <linux/types.h>
     11
     12#define BFS_BSIZE_BITS		9
     13#define BFS_BSIZE		(1<<BFS_BSIZE_BITS)
     14
     15#define BFS_MAGIC		0x1BADFACE
     16#define BFS_ROOT_INO		2
     17#define BFS_INODES_PER_BLOCK	8
     18
     19/* SVR4 vnode type values (bfs_inode->i_vtype) */
     20#define BFS_VDIR 2L
     21#define BFS_VREG 1L
     22
     23/* BFS inode layout on disk */
     24struct bfs_inode {
     25	__le16 i_ino;
     26	__u16 i_unused;
     27	__le32 i_sblock;
     28	__le32 i_eblock;
     29	__le32 i_eoffset;
     30	__le32 i_vtype;
     31	__le32 i_mode;
     32	__le32 i_uid;
     33	__le32 i_gid;
     34	__le32 i_nlink;
     35	__le32 i_atime;
     36	__le32 i_mtime;
     37	__le32 i_ctime;
     38	__u32 i_padding[4];
     39};
     40
     41#define BFS_NAMELEN		14	
     42#define BFS_DIRENT_SIZE		16
     43#define BFS_DIRS_PER_BLOCK	32
     44
     45struct bfs_dirent {
     46	__le16 ino;
     47	char name[BFS_NAMELEN];
     48};
     49
     50/* BFS superblock layout on disk */
     51struct bfs_super_block {
     52	__le32 s_magic;
     53	__le32 s_start;
     54	__le32 s_end;
     55	__le32 s_from;
     56	__le32 s_to;
     57	__s32 s_bfrom;
     58	__s32 s_bto;
     59	char  s_fsname[6];
     60	char  s_volume[6];
     61	__u32 s_padding[118];
     62};
     63
     64
     65#define BFS_OFF2INO(offset) \
     66        ((((offset) - BFS_BSIZE) / sizeof(struct bfs_inode)) + BFS_ROOT_INO)
     67
     68#define BFS_INO2OFF(ino) \
     69	((__u32)(((ino) - BFS_ROOT_INO) * sizeof(struct bfs_inode)) + BFS_BSIZE)
     70#define BFS_NZFILESIZE(ip) \
     71        ((le32_to_cpu((ip)->i_eoffset) + 1) -  le32_to_cpu((ip)->i_sblock) * BFS_BSIZE)
     72
     73#define BFS_FILESIZE(ip) \
     74        ((ip)->i_sblock == 0 ? 0 : BFS_NZFILESIZE(ip))
     75
     76#define BFS_FILEBLOCKS(ip) \
     77        ((ip)->i_sblock == 0 ? 0 : (le32_to_cpu((ip)->i_eblock) + 1) -  le32_to_cpu((ip)->i_sblock))
     78#define BFS_UNCLEAN(bfs_sb, sb)	\
     79	((le32_to_cpu(bfs_sb->s_from) != -1) && (le32_to_cpu(bfs_sb->s_to) != -1) && !(sb->s_flags & SB_RDONLY))
     80
     81
     82#endif	/* _LINUX_BFS_FS_H */