1 /* 2 * GRUB -- GRand Unified Bootloader 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 /* 8 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 9 * Use is subject to license terms. 10 */ 11 12 #ifndef _SYS_FS_ZFS_ZNODE_H 13 #define _SYS_FS_ZFS_ZNODE_H 14 15 #include <zfs/zfs_acl.h> 16 17 #define MASTER_NODE_OBJ 1 18 #define ZFS_ROOT_OBJ "ROOT" 19 #define ZPL_VERSION_STR "VERSION" 20 #define ZFS_SA_ATTRS "SA_ATTRS" 21 22 #define ZPL_VERSION 5ULL 23 24 #define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48) 25 26 /* 27 * This is the persistent portion of the znode. It is stored 28 * in the "bonus buffer" of the file. Short symbolic links 29 * are also stored in the bonus buffer. 30 */ 31 typedef struct znode_phys { 32 uint64_t zp_atime[2]; /* 0 - last file access time */ 33 uint64_t zp_mtime[2]; /* 16 - last file modification time */ 34 uint64_t zp_ctime[2]; /* 32 - last file change time */ 35 uint64_t zp_crtime[2]; /* 48 - creation time */ 36 uint64_t zp_gen; /* 64 - generation (txg of creation) */ 37 uint64_t zp_mode; /* 72 - file mode bits */ 38 uint64_t zp_size; /* 80 - size of file */ 39 uint64_t zp_parent; /* 88 - directory parent (`..') */ 40 uint64_t zp_links; /* 96 - number of links to file */ 41 uint64_t zp_xattr; /* 104 - DMU object for xattrs */ 42 uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ 43 uint64_t zp_flags; /* 120 - persistent flags */ 44 uint64_t zp_uid; /* 128 - file owner */ 45 uint64_t zp_gid; /* 136 - owning group */ 46 uint64_t zp_pad[4]; /* 144 - future */ 47 zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */ 48 /* 49 * Data may pad out any remaining bytes in the znode buffer, eg: 50 * 51 * |<---------------------- dnode_phys (512) ------------------------>| 52 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| 53 * |<---- znode (264) ---->|<---- data (56) ---->| 54 * 55 * At present, we only use this space to store symbolic links. 56 */ 57 } znode_phys_t; 58 59 #endif /* _SYS_FS_ZFS_ZNODE_H */ 60