cregit-Linux how code gets into the kernel

Release 4.12 include/uapi/linux/bfs_fs.h

/*
 *      include/linux/bfs_fs.h - BFS data structures on disk.
 *      Copyright (C) 1999 Tigran Aivazian <tigran@veritas.com>
 */

#ifndef _LINUX_BFS_FS_H

#define _LINUX_BFS_FS_H

#include <linux/types.h>


#define BFS_BSIZE_BITS		9

#define BFS_BSIZE		(1<<BFS_BSIZE_BITS)


#define BFS_MAGIC		0x1BADFACE

#define BFS_ROOT_INO		2

#define BFS_INODES_PER_BLOCK	8

/* SVR4 vnode type values (bfs_inode->i_vtype) */

#define BFS_VDIR 2L

#define BFS_VREG 1L

/* BFS inode layout on disk */

struct bfs_inode {
	
__le16 i_ino;
	
__u16 i_unused;
	
__le32 i_sblock;
	
__le32 i_eblock;
	
__le32 i_eoffset;
	
__le32 i_vtype;
	
__le32 i_mode;
	
__le32 i_uid;
	
__le32 i_gid;
	
__le32 i_nlink;
	
__le32 i_atime;
	
__le32 i_mtime;
	
__le32 i_ctime;
	
__u32 i_padding[4];
};


#define BFS_NAMELEN		14	

#define BFS_DIRENT_SIZE		16

#define BFS_DIRS_PER_BLOCK	32


struct bfs_dirent {
	
__le16 ino;
	
char name[BFS_NAMELEN];
};

/* BFS superblock layout on disk */

struct bfs_super_block {
	
__le32 s_magic;
	
__le32 s_start;
	
__le32 s_end;
	
__le32 s_from;
	
__le32 s_to;
	
__s32 s_bfrom;
	
__s32 s_bto;
	
char  s_fsname[6];
	
char  s_volume[6];
	
__u32 s_padding[118];
};



#define BFS_OFF2INO(offset) \
        ((((offset) - BFS_BSIZE) / sizeof(struct bfs_inode)) + BFS_ROOT_INO)


#define BFS_INO2OFF(ino) \
	((__u32)(((ino) - BFS_ROOT_INO) * sizeof(struct bfs_inode)) + BFS_BSIZE)

#define BFS_NZFILESIZE(ip) \
        ((le32_to_cpu((ip)->i_eoffset) + 1) -  le32_to_cpu((ip)->i_sblock) * BFS_BSIZE)


#define BFS_FILESIZE(ip) \
        ((ip)->i_sblock == 0 ? 0 : BFS_NZFILESIZE(ip))


#define BFS_FILEBLOCKS(ip) \
        ((ip)->i_sblock == 0 ? 0 : (le32_to_cpu((ip)->i_eblock) + 1) -  le32_to_cpu((ip)->i_sblock))

#define BFS_UNCLEAN(bfs_sb, sb)	\
	((le32_to_cpu(bfs_sb->s_from) != -1) && (le32_to_cpu(bfs_sb->s_to) != -1) && !(sb->s_flags & MS_RDONLY))


#endif	/* _LINUX_BFS_FS_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)17682.24%350.00%
Alexey Dobriyan219.81%116.67%
Andrew Stribblehill146.54%116.67%
Jaswinder Singh Rajput31.40%116.67%
Total214100.00%6100.00%
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