/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_ZFS_SA_H #define _SYS_ZFS_SA_H #ifdef _KERNEL #include <sys/types32.h> #include <sys/list.h> #include <sys/dmu.h> #include <sys/zfs_acl.h> #include <sys/zfs_znode.h> #include <sys/sa.h> #include <sys/zil.h> #endif #ifdef __cplusplus extern "C" { #endif /* * This is the list of known attributes * to the ZPL. The values of the actual * attributes are not defined by the order * the enums. It is controlled by the attribute * registration mechanism. Two different file system * could have different numeric values for the same * attributes. this list is only used for dereferencing * into the table that will hold the actual numeric value. */ typedef enum zpl_attr { ZPL_ATIME, ZPL_MTIME, ZPL_CTIME, ZPL_CRTIME, ZPL_GEN, ZPL_MODE, ZPL_SIZE, ZPL_PARENT, ZPL_LINKS, ZPL_XATTR, ZPL_RDEV, ZPL_FLAGS, ZPL_UID, ZPL_GID, ZPL_PAD, ZPL_ZNODE_ACL, ZPL_DACL_COUNT, ZPL_SYMLINK, ZPL_SCANSTAMP, ZPL_DACL_ACES, ZPL_DXATTR, ZPL_END } zpl_attr_t; #define ZFS_OLD_ZNODE_PHYS_SIZE 0x108 #define ZFS_SA_BASE_ATTR_SIZE (ZFS_OLD_ZNODE_PHYS_SIZE - \ sizeof (zfs_acl_phys_t)) #define SA_MODE_OFFSET 0 #define SA_SIZE_OFFSET 8 #define SA_GEN_OFFSET 16 #define SA_UID_OFFSET 24 #define SA_GID_OFFSET 32 #define SA_PARENT_OFFSET 40 extern sa_attr_reg_t zfs_attr_table[ZPL_END + 1]; extern sa_attr_reg_t zfs_legacy_attr_table[ZPL_END + 1]; /* * This is a deprecated data structure that only exists for * dealing with file systems create prior to ZPL version 5. */ typedef struct znode_phys { uint64_t zp_atime[2]; /* 0 - last file access time */ uint64_t zp_mtime[2]; /* 16 - last file modification time */ uint64_t zp_ctime[2]; /* 32 - last file change time */ uint64_t zp_crtime[2]; /* 48 - creation time */ uint64_t zp_gen; /* 64 - generation (txg of creation) */ uint64_t zp_mode; /* 72 - file mode bits */ uint64_t zp_size; /* 80 - size of file */ uint64_t zp_parent; /* 88 - directory parent (`..') */ uint64_t zp_links; /* 96 - number of links to file */ uint64_t zp_xattr; /* 104 - DMU object for xattrs */ uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ uint64_t zp_flags; /* 120 - persistent flags */ uint64_t zp_uid; /* 128 - file owner */ uint64_t zp_gid; /* 136 - owning group */ uint64_t zp_zap; /* 144 - extra attributes */ uint64_t zp_pad[3]; /* 152 - future */ zfs_acl_phys_t zp_acl; /* 176 - 263 ACL */ /* * Data may pad out any remaining bytes in the znode buffer, eg: * * |<---------------------- dnode_phys (512) ------------------------>| * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| * |<---- znode (264) ---->|<---- data (56) ---->| * * At present, we use this space for the following: * - symbolic links * - 32-byte anti-virus scanstamp (regular files only) */ } znode_phys_t; #ifdef _KERNEL #define DXATTR_MAX_ENTRY_SIZE (32768) #define DXATTR_MAX_SA_SIZE (SPA_MAXBLOCKSIZE >> 1) int zfs_sa_readlink(struct znode *, uio_t *); void zfs_sa_symlink(struct znode *, char *link, int len, dmu_tx_t *); void zfs_sa_get_scanstamp(struct znode *, xvattr_t *); void zfs_sa_set_scanstamp(struct znode *, xvattr_t *, dmu_tx_t *); int zfs_sa_get_xattr(struct znode *); int zfs_sa_set_xattr(struct znode *); void zfs_sa_upgrade(struct sa_handle *, dmu_tx_t *); void zfs_sa_upgrade_txholds(dmu_tx_t *, struct znode *); void zfs_sa_init(void); void zfs_sa_fini(void); #endif #ifdef __cplusplus } #endif #endif /* _SYS_ZFS_SA_H */