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/*
* 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_OLD_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 */
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