| 1 | /* |
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| 2 | * efs_fs_i.h |
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| 3 | * |
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| 4 | * Copyright (c) 1999 Al Smith |
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| 5 | * |
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| 6 | * Portions derived from IRIX header files (c) 1988 Silicon Graphics |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef __EFS_FS_I_H__ |
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| 10 | #define __EFS_FS_I_H__ |
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| 11 | |
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| 12 | typedef int32_t efs_block_t; |
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| 13 | typedef uint32_t efs_ino_t; |
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| 14 | |
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| 15 | #define EFS_DIRECTEXTENTS 12 |
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| 16 | |
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| 17 | /* |
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| 18 | * layout of an extent, in memory and on disk. 8 bytes exactly. |
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| 19 | */ |
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| 20 | typedef union extent_u { |
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| 21 | unsigned char raw[8]; |
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| 22 | struct extent_s { |
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| 23 | unsigned int ex_magic:8; /* magic # (zero) */ |
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| 24 | unsigned int ex_bn:24; /* basic block */ |
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| 25 | unsigned int ex_length:8; /* numblocks in this extent */ |
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| 26 | unsigned int ex_offset:24; /* logical offset into file */ |
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| 27 | } cooked; |
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| 28 | } efs_extent; |
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| 29 | |
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| 30 | typedef struct edevs { |
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| 31 | __be16 odev; |
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| 32 | __be32 ndev; |
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| 33 | } efs_devs; |
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| 34 | |
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| 35 | /* |
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| 36 | * extent based filesystem inode as it appears on disk. The efs inode |
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| 37 | * is exactly 128 bytes long. |
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| 38 | */ |
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| 39 | struct efs_dinode { |
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| 40 | __be16 di_mode; /* mode and type of file */ |
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| 41 | __be16 di_nlink; /* number of links to file */ |
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| 42 | __be16 di_uid; /* owner's user id */ |
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| 43 | __be16 di_gid; /* owner's group id */ |
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| 44 | __be32 di_size; /* number of bytes in file */ |
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| 45 | __be32 di_atime; /* time last accessed */ |
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| 46 | __be32 di_mtime; /* time last modified */ |
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| 47 | __be32 di_ctime; /* time created */ |
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| 48 | __be32 di_gen; /* generation number */ |
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| 49 | __be16 di_numextents; /* # of extents */ |
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| 50 | u_char di_version; /* version of inode */ |
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| 51 | u_char di_spare; /* spare - used by AFS */ |
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| 52 | union di_addr { |
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| 53 | efs_extent di_extents[EFS_DIRECTEXTENTS]; |
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| 54 | efs_devs di_dev; /* device for IFCHR/IFBLK */ |
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| 55 | } di_u; |
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| 56 | }; |
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| 57 | |
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| 58 | |
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| 59 | #endif /* __EFS_FS_I_H__ */ |
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| 60 | |
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