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/*
* efs_fs_i.h
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from IRIX header files (c) 1988 Silicon Graphics
*/
#ifndef __EFS_FS_I_H__
#define __EFS_FS_I_H__
typedef int32_t efs_block_t;
typedef uint32_t efs_ino_t;
#define EFS_DIRECTEXTENTS 12
/*
* layout of an extent, in memory and on disk. 8 bytes exactly.
*/
typedef union extent_u {
unsigned char raw[8];
struct extent_s {
unsigned int ex_magic:8; /* magic # (zero) */
unsigned int ex_bn:24; /* basic block */
unsigned int ex_length:8; /* numblocks in this extent */
unsigned int ex_offset:24; /* logical offset into file */
} cooked;
} efs_extent;
typedef struct edevs {
__be16 odev;
__be32 ndev;
} efs_devs;
/*
* extent based filesystem inode as it appears on disk. The efs inode
* is exactly 128 bytes long.
*/
struct efs_dinode {
__be16 di_mode; /* mode and type of file */
__be16 di_nlink; /* number of links to file */
__be16 di_uid; /* owner's user id */
__be16 di_gid; /* owner's group id */
__be32 di_size; /* number of bytes in file */
__be32 di_atime; /* time last accessed */
__be32 di_mtime; /* time last modified */
__be32 di_ctime; /* time created */
__be32 di_gen; /* generation number */
__be16 di_numextents; /* # of extents */
u_char di_version; /* version of inode */
u_char di_spare; /* spare - used by AFS */
union di_addr {
efs_extent di_extents[EFS_DIRECTEXTENTS];
efs_devs di_dev; /* device for IFCHR/IFBLK */
} di_u;
};
/* efs inode storage in memory */
struct efs_inode_info {
int numextents;
int lastextent;
efs_extent extents[EFS_DIRECTEXTENTS];
struct inode vfs_inode;
};
#endif /* __EFS_FS_I_H__ */
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