--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/uts/common/fs/zfs/sys/zfs_znode.h	Mon Oct 31 11:33:35 2005 -0800
@@ -0,0 +1,283 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (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 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_SYS_FS_ZFS_ZNODE_H
+#define	_SYS_FS_ZFS_ZNODE_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#ifdef _KERNEL
+#include <sys/isa_defs.h>
+#include <sys/types32.h>
+#include <sys/list.h>
+#include <sys/dmu.h>
+#include <sys/zfs_vfsops.h>
+#endif
+#include <sys/zfs_acl.h>
+#include <sys/zil.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * Define special zfs pflags
+ */
+#define	ZFS_XATTR	0x1		/* is an extended attribute */
+#define	ZFS_INHERIT_ACE	0x2		/* ace has inheritable ACEs */
+
+#define	MASTER_NODE_OBJ	1
+
+/*
+ * special attributes for master node.
+ */
+
+#define	ZFS_FSID		"FSID"
+#define	ZFS_DELETE_QUEUE	"DELETE_QUEUE"
+#define	ZFS_ROOT_OBJ		"ROOT"
+#define	ZFS_VERSION_OBJ		"VERSION"
+#define	ZFS_PROP_BLOCKPERPAGE	"BLOCKPERPAGE"
+#define	ZFS_PROP_NOGROWBLOCKS	"NOGROWBLOCKS"
+
+#define	ZFS_FLAG_BLOCKPERPAGE	0x1
+#define	ZFS_FLAG_NOGROWBLOCKS	0x2
+
+/*
+ * ZFS version - rev'd whenever an incompatible on-disk format change
+ * occurs.  Independent of SPA/DMU/ZAP versioning.
+ */
+
+#define	ZFS_VERSION		1ULL
+
+#define	ZFS_MAX_BLOCKSIZE	(SPA_MAXBLOCKSIZE)
+
+/* Path component length */
+/*
+ * The generic fs code uses MAXNAMELEN to represent
+ * what the largest component length is.  Unfortunately,
+ * this length includes the terminating NULL.  ZFS needs
+ * to tell the users via pathconf() and statvfs() what the
+ * true maximum length of a component is, excluding the NULL.
+ */
+#define	ZFS_MAXNAMELEN	(MAXNAMELEN - 1)
+
+/*
+ * This is the persistent portion of the znode.  It is stored
+ * in the "bonus buffer" of the file.  Short symbolic links
+ * are also stored in the bonus buffer.
+ */
+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_pad[4];		/* 144 - future */
+	zfs_znode_acl_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 only use this space to store symbolic links.
+	 */
+} znode_phys_t;
+
+/*
+ * Directory entry locks control access to directory entries.
+ * They are used to protect creates, deletes, and renames.
+ * Each directory znode has a mutex and a list of locked names.
+ */
+#ifdef _KERNEL
+typedef struct zfs_dirlock {
+	char		*dl_name;	/* directory entry being locked */
+	uint32_t	dl_sharecnt;	/* 0 if exclusive, > 0 if shared */
+	uint16_t	dl_namesize;	/* set if dl_name was allocated */
+	kcondvar_t	dl_cv;		/* wait for entry to be unlocked */
+	struct znode	*dl_dzp;	/* directory znode */
+	struct zfs_dirlock *dl_next;	/* next in z_dirlocks list */
+} zfs_dirlock_t;
+
+struct zcache_state;
+
+typedef struct znode {
+	struct zfsvfs	*z_zfsvfs;
+	vnode_t		*z_vnode;
+	list_node_t 	z_list_node;	/* deleted znodes */
+	uint64_t	z_id;		/* object ID for this znode */
+	kmutex_t	z_lock;		/* znode modification lock */
+	krwlock_t	z_map_lock;	/* page map lock */
+	krwlock_t	z_grow_lock;	/* grow block size lock */
+	krwlock_t	z_append_lock;	/* append-mode lock */
+	zfs_dirlock_t	*z_dirlocks;	/* directory entry lock list */
+	uint8_t		z_active;	/* znode is in use */
+	uint8_t		z_reap;		/* reap file at last reference */
+	uint8_t		z_atime_dirty;	/* atime needs to be synced */
+	uint8_t		z_dbuf_held;	/* Is z_dbuf already held? */
+	uint_t		z_mapcnt;	/* number of memory maps to file */
+	uint_t		z_blksz;	/* block size in bytes */
+	uint_t		z_seq;		/* modification sequence number */
+	uint64_t	z_last_itx;	/* last ZIL itx on this znode */
+	kmutex_t	z_acl_lock;	/* acl data lock */
+	list_node_t	z_link_node;	/* all znodes in fs link */
+	list_node_t	z_zcache_node;
+	struct zcache_state *z_zcache_state;
+	uint64_t	z_zcache_access;
+
+	/*
+	 * These are dmu managed fields.
+	 */
+	znode_phys_t	*z_phys;	/* pointer to persistent znode */
+	dmu_buf_t	*z_dbuf;	/* buffer containing the z_phys */
+} znode_t;
+
+/*
+ * The grow_lock is only applicable to "regular" files.
+ * The parent_lock is only applicable to directories.
+ */
+#define	z_parent_lock	z_grow_lock
+
+/*
+ * Convert between znode pointers and vnode pointers
+ */
+#define	ZTOV(ZP)	((ZP)->z_vnode)
+#define	VTOZ(VP)	((znode_t *)(VP)->v_data)
+
+/*
+ * ZFS_ENTER() is called on entry to each ZFS vnode and vfs operation.
+ * ZFS_EXIT() must be called before exitting the vop.
+ */
+#define	ZFS_ENTER(zfsvfs) \
+	{ \
+		atomic_add_32(&(zfsvfs)->z_op_cnt, 1); \
+		if ((zfsvfs)->z_unmounted1) { \
+			ZFS_EXIT(zfsvfs); \
+			return (EIO); \
+		} \
+	}
+#define	ZFS_EXIT(zfsvfs) atomic_add_32(&(zfsvfs)->z_op_cnt, -1)
+
+/*
+ * Macros for dealing with dmu_buf_hold
+ */
+#define	ZFS_OBJ_HASH(obj_num)	(obj_num & (ZFS_OBJ_MTX_SZ - 1))
+#define	ZFS_OBJ_MUTEX(zp)	\
+	(&zp->z_zfsvfs->z_hold_mtx[ZFS_OBJ_HASH(zp->z_id)])
+#define	ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num) \
+	mutex_enter(&zfsvfs->z_hold_mtx[ZFS_OBJ_HASH(obj_num)]);
+
+#define	ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num) \
+	mutex_exit(&zfsvfs->z_hold_mtx[ZFS_OBJ_HASH(obj_num)])
+
+/*
+ * Macros to encode/decode ZFS stored time values from/to struct timespec
+ */
+#define	ZFS_TIME_ENCODE(tp, stmp)		\
+{						\
+	stmp[0] = (uint64_t)(tp)->tv_sec; 	\
+	stmp[1] = (uint64_t)(tp)->tv_nsec;	\
+}
+
+#define	ZFS_TIME_DECODE(tp, stmp)		\
+{						\
+	(tp)->tv_sec = (time_t)stmp[0];		\
+	(tp)->tv_nsec = (long)stmp[1];		\
+}
+
+/*
+ * Timestamp defines
+ */
+#define	ACCESSED		(AT_ATIME)
+#define	STATE_CHANGED		(AT_CTIME)
+#define	CONTENT_MODIFIED	(AT_MTIME | AT_CTIME)
+
+#define	ZFS_ACCESSTIME_STAMP(zfsvfs, zp) \
+	if ((zfsvfs)->z_atime && !((zfsvfs)->z_vfs->vfs_flag & VFS_RDONLY)) \
+		zfs_time_stamper(zp, ACCESSED, NULL)
+
+extern int	zfs_init_fs(zfsvfs_t *, znode_t **, cred_t *);
+extern void	zfs_set_dataprop(objset_t *);
+extern void	zfs_create_fs(objset_t *os, cred_t *cr, dmu_tx_t *tx);
+extern void	zfs_time_stamper(znode_t *, uint_t, dmu_tx_t *);
+extern void	zfs_time_stamper_locked(znode_t *, uint_t, dmu_tx_t *);
+extern int	zfs_grow_blocksize(znode_t *, uint64_t, dmu_tx_t *);
+extern int	zfs_freesp(znode_t *, uint64_t, uint64_t, int, dmu_tx_t *,
+    cred_t *cr);
+extern void	zfs_znode_init(void);
+extern void	zfs_znode_fini(void);
+extern znode_t	*zfs_znode_alloc(zfsvfs_t *, dmu_buf_t *, uint64_t, int);
+extern int	zfs_zget(zfsvfs_t *, uint64_t, znode_t **);
+extern void	zfs_zinactive(znode_t *);
+extern void	zfs_znode_delete(znode_t *, dmu_tx_t *);
+extern void	zfs_znode_free(znode_t *);
+extern int	zfs_delete_thread_target(zfsvfs_t *zfsvfs, int nthreads);
+extern void	zfs_delete_wait_empty(zfsvfs_t *zfsvfs);
+extern void	zfs_zcache_flush(zfsvfs_t *zfsvf);
+extern void	zfs_remove_op_tables();
+extern int	zfs_create_op_tables();
+extern int	zfs_sync(vfs_t *vfsp, short flag, cred_t *cr);
+
+extern uint64_t zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *dzp, znode_t *zp, char *name);
+extern uint64_t zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *dzp, char *name);
+extern uint64_t zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *dzp, znode_t *zp, char *name);
+extern uint64_t zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *dzp, znode_t *zp, char *name, char *link);
+extern uint64_t zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp);
+extern uint64_t zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *zp, offset_t off, ssize_t len, int ioflag, uio_t *uio);
+extern uint64_t zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *zp, uint64_t off, uint64_t len);
+extern uint64_t zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *zp, vattr_t *vap, uint_t mask_applied);
+extern uint64_t zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, int txtype,
+    znode_t *zp, int aclcnt, ace_t *z_ace);
+
+extern zil_get_data_t zfs_get_data;
+extern zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE];
+extern int zfsfstype;
+
+#endif /* _KERNEL */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_FS_ZFS_ZNODE_H */