1 /* 2 * Copyright (c) 1982, 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)dinode.h 7.9 (Berkeley) 06/28/90 8 */ 9 10 /* 11 * This structure defines the on-disk format of an inode. 12 */ 13 14 #define NDADDR 12 /* direct addresses in inode */ 15 #define NIADDR 3 /* indirect addresses in inode */ 16 17 struct dinode { 18 u_short di_mode; /* 0: mode and type of file */ 19 short di_nlink; /* 2: number of links to file */ 20 uid_t di_uid; /* 4: owner's user id */ 21 gid_t di_gid; /* 6: owner's group id */ 22 u_quad di_qsize; /* 8: number of bytes in file */ 23 time_t di_atime; /* 16: time last accessed */ 24 long di_atspare; 25 time_t di_mtime; /* 24: time last modified */ 26 long di_mtspare; 27 time_t di_ctime; /* 32: last time inode changed */ 28 long di_ctspare; 29 daddr_t di_db[NDADDR]; /* 40: disk block addresses */ 30 daddr_t di_ib[NIADDR]; /* 88: indirect blocks */ 31 long di_flags; /* 100: status, currently unused */ 32 long di_blocks; /* 104: blocks actually held */ 33 long di_gen; /* 108: generation number */ 34 long di_spare[4]; /* 112: reserved, currently unused */ 35 }; 36 37 #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ 38 #define di_size di_qsize.val[0] 39 #else /* BYTE_ORDER == BIG_ENDIAN */ 40 #define di_size di_qsize.val[1] 41 #endif 42 #define di_rdev di_db[0] 43 44 /* file modes */ 45 #define IFMT 0170000 /* type of file */ 46 #define IFIFO 0010000 /* named pipe (fifo) */ 47 #define IFCHR 0020000 /* character special */ 48 #define IFDIR 0040000 /* directory */ 49 #define IFBLK 0060000 /* block special */ 50 #define IFREG 0100000 /* regular */ 51 #define IFLNK 0120000 /* symbolic link */ 52 #define IFSOCK 0140000 /* socket */ 53 54 #define ISUID 04000 /* set user id on execution */ 55 #define ISGID 02000 /* set group id on execution */ 56 #define ISVTX 01000 /* save swapped text even after use */ 57 #define IREAD 0400 /* read, write, execute permissions */ 58 #define IWRITE 0200 59 #define IEXEC 0100 60