1 /* 2 * GRUB -- GRand Unified Bootloader 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 /* 20 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 21 * Use is subject to license terms. 22 */ 23 24 #ifndef _SYS_FS_ZFS_ZNODE_H 25 #define _SYS_FS_ZFS_ZNODE_H 26 27 #define MASTER_NODE_OBJ 1 28 #define ZFS_ROOT_OBJ "ROOT" 29 #define ZPL_VERSION_STR "VERSION" 30 #define ZFS_SA_ATTRS "SA_ATTRS" 31 32 #define ZPL_VERSION 5ULL 33 34 #define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48) 35 36 /* 37 * This is the persistent portion of the znode. It is stored 38 * in the "bonus buffer" of the file. Short symbolic links 39 * are also stored in the bonus buffer. 40 */ 41 typedef struct znode_phys { 42 uint64_t zp_atime[2]; /* 0 - last file access time */ 43 uint64_t zp_mtime[2]; /* 16 - last file modification time */ 44 uint64_t zp_ctime[2]; /* 32 - last file change time */ 45 uint64_t zp_crtime[2]; /* 48 - creation time */ 46 uint64_t zp_gen; /* 64 - generation (txg of creation) */ 47 uint64_t zp_mode; /* 72 - file mode bits */ 48 uint64_t zp_size; /* 80 - size of file */ 49 uint64_t zp_parent; /* 88 - directory parent (`..') */ 50 uint64_t zp_links; /* 96 - number of links to file */ 51 uint64_t zp_xattr; /* 104 - DMU object for xattrs */ 52 uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ 53 uint64_t zp_flags; /* 120 - persistent flags */ 54 uint64_t zp_uid; /* 128 - file owner */ 55 uint64_t zp_gid; /* 136 - owning group */ 56 uint64_t zp_pad[4]; /* 144 - future */ 57 zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */ 58 /* 59 * Data may pad out any remaining bytes in the znode buffer, eg: 60 * 61 * |<---------------------- dnode_phys (512) ------------------------>| 62 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| 63 * |<---- znode (264) ---->|<---- data (56) ---->| 64 * 65 * At present, we only use this space to store symbolic links. 66 */ 67 } znode_phys_t; 68 69 #endif /* _SYS_FS_ZFS_ZNODE_H */ 70