projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| da7c5cc6 | 1 | /* |
| 6d0f0ece KM |
2 | * Copyright (c) 1982, 1989 The Regents of the University of California. |
| 3 | * All rights reserved. | |
| da7c5cc6 | 4 | * |
| b702c21d | 5 | * %sccs.include.redist.c% |
| 6d0f0ece | 6 | * |
| d2b50ed5 | 7 | * @(#)dinode.h 7.13 (Berkeley) %G% |
| da7c5cc6 | 8 | */ |
| d0064d3a | 9 | |
| b5cc7ac7 KB |
10 | /* |
| 11 | * The root inode is the root of the file system. Inode 0 can't be used for | |
| 12 | * normal purposes and historically bad blocks were linked to inode 1, thus | |
| 13 | * the root inode is 2. (Inode 1 is no longer used for this purpose, however | |
| 14 | * numerous dump tapes make this assumption, so we are stuck with it). | |
| 15 | */ | |
| 16 | #define ROOTINO ((ino_t)2) | |
| 17 | ||
| d0064d3a | 18 | /* |
| a3257f3c KM |
19 | * A dinode contains all the meta-data associated with a UFS file. |
| 20 | * This structure defines the on-disk format of a dinode. | |
| d0064d3a | 21 | */ |
| ad30fb67 | 22 | |
| af0b24db SL |
23 | #define NDADDR 12 /* direct addresses in inode */ |
| 24 | #define NIADDR 3 /* indirect addresses in inode */ | |
| d0064d3a | 25 | |
| ad30fb67 | 26 | struct dinode { |
| 55a2aa38 KM |
27 | u_short di_mode; /* 0: mode and type of file */ |
| 28 | short di_nlink; /* 2: number of links to file */ | |
| 29 | uid_t di_uid; /* 4: owner's user id */ | |
| 30 | gid_t di_gid; /* 6: owner's group id */ | |
| d2b50ed5 | 31 | u_quad_t di_qsize; /* 8: number of bytes in file */ |
| 55a2aa38 KM |
32 | time_t di_atime; /* 16: time last accessed */ |
| 33 | long di_atspare; | |
| 34 | time_t di_mtime; /* 24: time last modified */ | |
| 35 | long di_mtspare; | |
| 36 | time_t di_ctime; /* 32: last time inode changed */ | |
| 37 | long di_ctspare; | |
| 38 | daddr_t di_db[NDADDR]; /* 40: disk block addresses */ | |
| 39 | daddr_t di_ib[NIADDR]; /* 88: indirect blocks */ | |
| 40 | long di_flags; /* 100: status, currently unused */ | |
| 41 | long di_blocks; /* 104: blocks actually held */ | |
| 42 | long di_gen; /* 108: generation number */ | |
| 43 | long di_spare[4]; /* 112: reserved, currently unused */ | |
| ad30fb67 KM |
44 | }; |
| 45 | ||
| d2b50ed5 KM |
46 | #ifdef _NOQUAD |
| 47 | #define di_size di_qsize.val[_QUAD_LOWWORD] | |
| fc3f528e | 48 | #else |
| d2b50ed5 KM |
49 | #define di_size di_qsize |
| 50 | #endif | |
| 51 | ||
| 52 | #if defined(tahoe) /* ugh! -- must be fixed */ | |
| 53 | #undef di_size | |
| 54 | #define di_size di_qsize.val[0] | |
| fc3f528e KB |
55 | #endif |
| 56 | ||
| 55a2aa38 | 57 | #define di_rdev di_db[0] |
| af0b24db | 58 | |
| 55a2aa38 | 59 | /* file modes */ |
| a3257f3c | 60 | #define IFMT 0170000 /* mask of file type */ |
| d328121a | 61 | #define IFIFO 0010000 /* named pipe (fifo) */ |
| a3257f3c | 62 | #define IFCHR 0020000 /* character special device */ |
| ad30fb67 | 63 | #define IFDIR 0040000 /* directory */ |
| a3257f3c KM |
64 | #define IFBLK 0060000 /* block special device */ |
| 65 | #define IFREG 0100000 /* regular file */ | |
| ad30fb67 | 66 | #define IFLNK 0120000 /* symbolic link */ |
| a3257f3c | 67 | #define IFSOCK 0140000 /* UNIX domain socket */ |
| dc9a2d80 | 68 | |
| a3257f3c KM |
69 | #define ISUID 04000 /* set user identifier when exec'ing */ |
| 70 | #define ISGID 02000 /* set group identifier when exec'ing */ | |
| 71 | #define ISVTX 01000 /* save execution information on exit */ | |
| 72 | #define IREAD 0400 /* read permission */ | |
| 73 | #define IWRITE 0200 /* write permission */ | |
| 74 | #define IEXEC 0100 /* execute permission */ |