1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_ZFS_SA_H 27 #define _SYS_ZFS_SA_H 28 29 #ifdef _KERNEL 30 #include <sys/list.h> 31 #include <sys/dmu.h> 32 #include <sys/zfs_acl.h> 33 #include <sys/zfs_znode.h> 34 #include <sys/sa.h> 35 #include <sys/zil.h> 36 37 38 #endif 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /* 45 * This is the list of known attributes 46 * to the ZPL. The values of the actual 47 * attributes are not defined by the order 48 * the enums. It is controlled by the attribute 49 * registration mechanism. Two different file system 50 * could have different numeric values for the same 51 * attributes. this list is only used for dereferencing 52 * into the table that will hold the actual numeric value. 53 */ 54 typedef enum zpl_attr { 55 ZPL_ATIME, 56 ZPL_MTIME, 57 ZPL_CTIME, 58 ZPL_CRTIME, 59 ZPL_GEN, 60 ZPL_MODE, 61 ZPL_SIZE, 62 ZPL_PARENT, 63 ZPL_LINKS, 64 ZPL_XATTR, 65 ZPL_RDEV, 66 ZPL_FLAGS, 67 ZPL_UID, 68 ZPL_GID, 69 ZPL_PAD, 70 ZPL_ZNODE_ACL, 71 ZPL_DACL_COUNT, 72 ZPL_SYMLINK, 73 ZPL_SCANSTAMP, 74 ZPL_DACL_ACES, 75 ZPL_END 76 } zpl_attr_t; 77 78 #define ZFS_OLD_ZNODE_PHYS_SIZE 0x108 79 #define ZFS_SA_BASE_ATTR_SIZE (ZFS_OLD_ZNODE_PHYS_SIZE - \ 80 sizeof (zfs_acl_phys_t)) 81 82 #define SA_MODE_OFFSET 0 83 #define SA_SIZE_OFFSET 8 84 #define SA_GEN_OFFSET 16 85 #define SA_UID_OFFSET 24 86 #define SA_GID_OFFSET 32 87 #define SA_PARENT_OFFSET 40 88 89 extern sa_attr_reg_t zfs_attr_table[ZPL_END + 1]; 90 extern sa_attr_reg_t zfs_legacy_attr_table[ZPL_END + 1]; 91 92 /* 93 * This is a deprecated data structure that only exists for 94 * dealing with file systems create prior to ZPL version 5. 95 */ 96 typedef struct znode_phys { 97 uint64_t zp_atime[2]; /* 0 - last file access time */ 98 uint64_t zp_mtime[2]; /* 16 - last file modification time */ 99 uint64_t zp_ctime[2]; /* 32 - last file change time */ 100 uint64_t zp_crtime[2]; /* 48 - creation time */ 101 uint64_t zp_gen; /* 64 - generation (txg of creation) */ 102 uint64_t zp_mode; /* 72 - file mode bits */ 103 uint64_t zp_size; /* 80 - size of file */ 104 uint64_t zp_parent; /* 88 - directory parent (`..') */ 105 uint64_t zp_links; /* 96 - number of links to file */ 106 uint64_t zp_xattr; /* 104 - DMU object for xattrs */ 107 uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ 108 uint64_t zp_flags; /* 120 - persistent flags */ 109 uint64_t zp_uid; /* 128 - file owner */ 110 uint64_t zp_gid; /* 136 - owning group */ 111 uint64_t zp_zap; /* 144 - extra attributes */ 112 uint64_t zp_pad[3]; /* 152 - future */ 113 zfs_acl_phys_t zp_acl; /* 176 - 263 ACL */ 114 /* 115 * Data may pad out any remaining bytes in the znode buffer, eg: 116 * 117 * |<---------------------- dnode_phys (512) ------------------------>| 118 * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| 119 * |<---- znode (264) ---->|<---- data (56) ---->| 120 * 121 * At present, we use this space for the following: 122 * - symbolic links 123 * - 32-byte anti-virus scanstamp (regular files only) 124 */ 125 } znode_phys_t; 126 127 #ifdef _KERNEL 128 int zfs_sa_readlink(struct znode *, uio_t *); 129 void zfs_sa_symlink(struct znode *, char *link, int len, dmu_tx_t *); 130 void zfs_sa_upgrade(struct sa_handle *, dmu_tx_t *); 131 void zfs_sa_get_scanstamp(struct znode *, xvattr_t *); 132 void zfs_sa_set_scanstamp(struct znode *, xvattr_t *, dmu_tx_t *); 133 void zfs_sa_uprade_pre(struct sa_handle *, void *, dmu_tx_t *); 134 void zfs_sa_upgrade_post(struct sa_handle *, void *, dmu_tx_t *); 135 void zfs_sa_upgrade_txholds(dmu_tx_t *, struct znode *); 136 #endif 137 138 #ifdef __cplusplus 139 } 140 #endif 141 142 #endif /* _SYS_ZFS_SA_H */ 143