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, see <http://www.gnu.org/licenses/>. 17 */ 18 /* 19 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 20 * Use is subject to license terms. 21 */ 22 23 #ifndef _SYS_FS_ZFS_ZNODE_H 24 #define _SYS_FS_ZFS_ZNODE_H 25 26 #define MASTER_NODE_OBJ 1 27 #define ZFS_ROOT_OBJ "ROOT" 28 #define ZPL_VERSION_STR "VERSION" 29 #define ZFS_SA_ATTRS "SA_ATTRS" 30 31 #define ZPL_VERSION 5ULL 32 33 #define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48) 34 35 /* 36 * This is the persistent portion of the znode. It is stored 37 * in the "bonus buffer" of the file. Short symbolic links 38 * are also stored in the bonus buffer. 39 */ 40 typedef struct znode_phys { 41 uint64_t zp_atime[2]; /* 0 - last file access time */ 42 uint64_t zp_mtime[2]; /* 16 - last file modification time */ 43 uint64_t zp_ctime[2]; /* 32 - last file change time */ 44 uint64_t zp_crtime[2]; /* 48 - creation time */ 45 uint64_t zp_gen; /* 64 - generation (txg of creation) */ 46 uint64_t zp_mode; /* 72 - file mode bits */ 47 uint64_t zp_size; /* 80 - size of file */ 48 uint64_t zp_parent; /* 88 - directory parent (`..') */ 49 uint64_t zp_links; /* 96 - number of links to file */ 50 uint64_t zp_xattr; /* 104 - DMU object for xattrs */ 51 uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ 52 uint64_t zp_flags; /* 120 - persistent flags */ 53 uint64_t zp_uid; /* 128 - file owner */ 54 uint64_t zp_gid; /* 136 - owning group */ 55 uint64_t zp_pad[4]; /* 144 - future */ 56 zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */ 57 /* 58 * Data may pad out any remaining bytes in the znode buffer, eg: 59 * 60 * |<---------------------- dnode_phys (512) ------------------------>| 61 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| 62 * |<---- znode (264) ---->|<---- data (56) ---->| 63 * 64 * At present, we only use this space to store symbolic links. 65 */ 66 } znode_phys_t; 67 68 #endif /* _SYS_FS_ZFS_ZNODE_H */ 69