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 7.10 (Berkeley) 05/08/91 8 */ 9 10 /* 11 * A dinode contains all the meta-data associated with a UFS file. 12 * This structure defines the on-disk format of a dinode. 13 */ 14 15 #define NDADDR 12 /* direct addresses in inode */ 16 #define NIADDR 3 /* indirect addresses in inode */ 17 18 struct dinode { 19 u_short di_mode; /* 0: mode and type of file */ 20 short di_nlink; /* 2: number of links to file */ 21 uid_t di_uid; /* 4: owner's user id */ 22 gid_t di_gid; /* 6: owner's group id */ 23 u_quad di_qsize; /* 8: number of bytes in file */ 24 time_t di_atime; /* 16: time last accessed */ 25 long di_atspare; 26 time_t di_mtime; /* 24: time last modified */ 27 long di_mtspare; 28 time_t di_ctime; /* 32: last time inode changed */ 29 long di_ctspare; 30 daddr_t di_db[NDADDR]; /* 40: disk block addresses */ 31 daddr_t di_ib[NIADDR]; /* 88: indirect blocks */ 32 long di_flags; /* 100: status, currently unused */ 33 long di_blocks; /* 104: blocks actually held */ 34 long di_gen; /* 108: generation number */ 35 long di_spare[4]; /* 112: reserved, currently unused */ 36 }; 37 38 #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ 39 #define di_size di_qsize.val[0] 40 #else /* BYTE_ORDER == BIG_ENDIAN */ 41 #define di_size di_qsize.val[1] 42 #endif 43 #define di_rdev di_db[0] 44 45 /* file modes */ 46 #define IFMT 0170000 /* mask of file type */ 47 #define IFIFO 0010000 /* named pipe (fifo) */ 48 #define IFCHR 0020000 /* character special device */ 49 #define IFDIR 0040000 /* directory */ 50 #define IFBLK 0060000 /* block special device */ 51 #define IFREG 0100000 /* regular file */ 52 #define IFLNK 0120000 /* symbolic link */ 53 #define IFSOCK 0140000 /* UNIX domain socket */ 54 55 #define ISUID 04000 /* set user identifier when exec'ing */ 56 #define ISGID 02000 /* set group identifier when exec'ing */ 57 #define ISVTX 01000 /* save execution information on exit */ 58 #define IREAD 0400 /* read permission */ 59 #define IWRITE 0200 /* write permission */ 60 #define IEXEC 0100 /* execute permission */ 61