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