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Diffstat (limited to 'include/sys/zfs_sa.h')
| -rw-r--r-- | include/sys/zfs_sa.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/include/sys/zfs_sa.h b/include/sys/zfs_sa.h new file mode 100644 index 000000000..cd312b27a --- /dev/null +++ b/include/sys/zfs_sa.h @@ -0,0 +1,143 @@ +/* + * 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_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 +int zfs_sa_readlink(struct znode *, uio_t *); +void zfs_sa_symlink(struct znode *, char *link, int len, dmu_tx_t *); +void zfs_sa_upgrade(struct sa_handle *, dmu_tx_t *); +void zfs_sa_get_scanstamp(struct znode *, xvattr_t *); +void zfs_sa_set_scanstamp(struct znode *, xvattr_t *, dmu_tx_t *); +void zfs_sa_uprade_pre(struct sa_handle *, void *, dmu_tx_t *); +void zfs_sa_upgrade_post(struct sa_handle *, void *, dmu_tx_t *); +void zfs_sa_upgrade_txholds(dmu_tx_t *, struct znode *); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_ZFS_SA_H */ |