zfs_znode.c revision 104e2ed78d9ef0a0f89f320108b8ca29ca3850d5
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Common Development and Distribution License (the "License").
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
8ef9dde03e938929ceec1291f40c6a4e644e6783marks * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/types.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/param.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/time.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/systm.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/sysmacros.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/resource.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mntent.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/vfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/vnode.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/file.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/kmem.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/cmn_err.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/errno.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/unistd.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/stat.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mode.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/atomic.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <vm/pvn.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include "fs/fs_subr.h"
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_dir.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_acl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_ioctl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_znode.h>
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin#include <sys/zfs_rlock.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zap.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/fs/zfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct kmem_cache *znode_cache = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*ARGSUSED*/
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic void
fa9e4066f08beec538e775443c5be79dd423fcabahrensznode_pageout_func(dmu_buf_t *dbuf, void *user_ptr)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp = user_ptr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *vp = ZTOV(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock mutex_enter(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vp->v_count == 0) {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_invalid(vp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_znode_free(zp);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock } else {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock /* signal force unmount that this znode can be freed */
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock zp->z_dbuf = NULL;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*ARGSUSED*/
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic int
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_cache_constructor(void *buf, void *cdrarg, int kmflags)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp = buf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_vnode = vn_alloc(KM_SLEEP);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_vnode->v_data = (caddr_t)zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_init(&zp->z_lock, NULL, MUTEX_DEFAULT, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens rw_init(&zp->z_map_lock, NULL, RW_DEFAULT, NULL);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin rw_init(&zp->z_parent_lock, NULL, RW_DEFAULT, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin mutex_init(&zp->z_range_lock, NULL, MUTEX_DEFAULT, NULL);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin avl_create(&zp->z_range_avl, zfs_range_compare,
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin sizeof (rl_t), offsetof(rl_t, r_node));
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf_held = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dirlocks = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*ARGSUSED*/
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic void
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_cache_destructor(void *buf, void *cdarg)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp = buf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zp->z_dirlocks == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_destroy(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens rw_destroy(&zp->z_map_lock);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin rw_destroy(&zp->z_parent_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_destroy(&zp->z_acl_lock);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin avl_destroy(&zp->z_range_avl);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zp->z_dbuf_held == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(ZTOV(zp)->v_count == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_free(ZTOV(zp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_init(void)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Initialize zcache
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(znode_cache == NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_cache = kmem_cache_create("zfs_znode_cache",
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (znode_t), 0, zfs_znode_cache_constructor,
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_znode_cache_destructor, NULL, NULL, NULL, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_fini(void)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Cleanup vfs & vnode ops
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_remove_op_tables();
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Cleanup zcache
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (znode_cache)
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_cache_destroy(znode_cache);
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_cache = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct vnodeops *zfs_dvnodeops;
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct vnodeops *zfs_fvnodeops;
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct vnodeops *zfs_symvnodeops;
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct vnodeops *zfs_xdvnodeops;
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct vnodeops *zfs_evnodeops;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_remove_op_tables()
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Remove vfs ops
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zfsfstype);
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) vfs_freevfsops_by_type(zfsfstype);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsfstype = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Remove vnode ops
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_dvnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_freevnodeops(zfs_dvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_fvnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_freevnodeops(zfs_fvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_symvnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_freevnodeops(zfs_symvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_xdvnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_freevnodeops(zfs_xdvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_evnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_freevnodeops(zfs_evnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_dvnodeops = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_fvnodeops = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_symvnodeops = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_xdvnodeops = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_evnodeops = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const fs_operation_def_t zfs_dvnodeops_template[];
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const fs_operation_def_t zfs_fvnodeops_template[];
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const fs_operation_def_t zfs_xdvnodeops_template[];
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const fs_operation_def_t zfs_symvnodeops_template[];
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const fs_operation_def_t zfs_evnodeops_template[];
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_create_op_tables()
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens int error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_dvnodeops can be set if mod_remove() calls mod_installfs()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * due to a failure to remove the the 2nd modlinkage (zfs_modldrv).
fa9e4066f08beec538e775443c5be79dd423fcabahrens * In this case we just return as the ops vectors are already set up.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_dvnodeops)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = vn_make_ops(MNTTYPE_ZFS, zfs_dvnodeops_template,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zfs_dvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = vn_make_ops(MNTTYPE_ZFS, zfs_fvnodeops_template,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zfs_fvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = vn_make_ops(MNTTYPE_ZFS, zfs_symvnodeops_template,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zfs_symvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = vn_make_ops(MNTTYPE_ZFS, zfs_xdvnodeops_template,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zfs_xdvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = vn_make_ops(MNTTYPE_ZFS, zfs_evnodeops_template,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zfs_evnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_init_fs - Initialize the zfsvfs struct and the file system
fa9e4066f08beec538e775443c5be79dd423fcabahrens * incore "master" object. Verify version compatibility.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_init_fs(zfsvfs_t *zfsvfs, znode_t **zpp, cred_t *cr)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens extern int zfsfstype;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens objset_t *os = zfsvfs->z_os;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t zoid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t version = ZFS_VERSION;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int i, error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_object_info_t doi;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_objset_stats_t *stats;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens *zpp = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * XXX - hack to auto-create the pool root filesystem at
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the first attempted mount.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (dmu_object_info(os, MASTER_NODE_OBJ, &doi) == ENOENT) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_tx_t *tx = dmu_tx_create(os);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, TRUE, NULL); /* master */
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, TRUE, NULL); /* del queue */
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); /* root node */
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = dmu_tx_assign(tx, TXG_WAIT);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(error, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_create_fs(os, cr, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_tx_commit(tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_VERSION_OBJ, 8, 1,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock &version);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (error) {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else if (version != ZFS_VERSION) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) printf("Mismatched versions: File system "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "is version %lld on-disk format, which is "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "incompatible with this software version %lld!",
fa9e4066f08beec538e775443c5be79dd423fcabahrens (u_longlong_t)version, ZFS_VERSION);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ENOTSUP);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The fsid is 64 bits, composed of an 8-bit fs type, which
fa9e4066f08beec538e775443c5be79dd423fcabahrens * separates our fsid from any other filesystem types, and a
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 56-bit objset unique ID. The objset unique ID is unique to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * all objsets open on this system, provided by unique_create().
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The 8-bit fs type must be put in the low bits of fsid[1]
fa9e4066f08beec538e775443c5be79dd423fcabahrens * because that's where other Solaris filesystems put it.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens stats = kmem_alloc(sizeof (dmu_objset_stats_t), KM_SLEEP);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_objset_stats(os, stats);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT((stats->dds_fsid_guid & ~((1ULL<<56)-1)) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs->z_vfs->vfs_fsid.val[0] = stats->dds_fsid_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs->z_vfs->vfs_fsid.val[1] = ((stats->dds_fsid_guid>>32) << 8) |
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsfstype & 0xFF;
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_free(stats, sizeof (dmu_objset_stats_t));
fa9e4066f08beec538e775443c5be79dd423fcabahrens stats = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1, &zoid);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (error)
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zoid != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs->z_root = zoid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Create the per mount vop tables.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Initialize zget mutex's
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (i = 0; i != ZFS_OBJ_MTX_SZ; i++)
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_init(&zfsvfs->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = zfs_zget(zfsvfs, zoid, zpp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U((*zpp)->z_id, ==, zoid);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_DELETE_QUEUE, 8, 1, &zoid);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (error)
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs->z_dqueue = zoid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Initialize delete head structure
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Thread(s) will be started/stopped via
fa9e4066f08beec538e775443c5be79dd423fcabahrens * readonly_changed_cb() depending
fa9e4066f08beec538e775443c5be79dd423fcabahrens * on whether this is rw/ro mount.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_create(&zfsvfs->z_delete_head.z_znodes,
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (znode_t), offsetof(znode_t, z_list_node));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Construct a new znode/vnode and intialize.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This does not do a call to dmu_set_user() that is
fa9e4066f08beec538e775443c5be79dd423fcabahrens * up to the caller to do, in case you don't want to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * return the znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockstatic znode_t *
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_alloc(zfsvfs_t *zfsvfs, dmu_buf_t *db, uint64_t obj_num, int blksz)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *vp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp = kmem_cache_alloc(znode_cache, KM_SLEEP);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zp->z_dirlocks == NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_phys = db->db_data;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_zfsvfs = zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_active = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_reap = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_atime_dirty = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf_held = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_mapcnt = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf = db;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_id = obj_num;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_blksz = blksz;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_seq = 0x7A4653;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zfsvfs->z_znodes_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_insert_tail(&zfsvfs->z_all_znodes, zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zfsvfs->z_znodes_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp = ZTOV(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_reinit(vp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_vfsp = zfsvfs->z_parent->z_vfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_type = IFTOVT((mode_t)zp->z_phys->zp_mode);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens switch (vp->v_type) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VDIR:
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_phys->zp_flags & ZFS_XATTR) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_xdvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_flag |= V_XATTRDIR;
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_dvnodeops);
7f6e3e7d4ebf3d6d45073854bef004ca26f8e918perrin zp->z_zn_prefetch = B_TRUE; /* z_prefetch default is enabled */
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VBLK:
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VCHR:
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_rdev = (dev_t)zp->z_phys->zp_rdev;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*FALLTHROUGH*/
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VFIFO:
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VSOCK:
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VDOOR:
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_fvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VREG:
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_flag |= VMODSORT;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_fvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens case VLNK:
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_symvnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens default:
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_setops(vp, zfs_evnodeops);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic void
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_dmu_init(znode_t *zp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *nzp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *zfsvfs = zp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *db = zp->z_dbuf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens nzp = dmu_buf_set_user(db, zp, &zp->z_phys, znode_pageout_func);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * there should be no
fa9e4066f08beec538e775443c5be79dd423fcabahrens * concurrent zgets on this object.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3P(nzp, ==, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Slap on VROOT if we are the root znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_id == zfsvfs->z_root) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZTOV(zp)->v_flag |= VROOT;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zp->z_dbuf_held == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf_held = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens VFS_HOLD(zfsvfs->z_vfs);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_exists(ZTOV(zp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Create a new DMU object to hold a zfs znode.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IN: dzp - parent directory for new znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens * vap - file attributes for new znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens * tx - dmu transaction id for zap operations
fa9e4066f08beec538e775443c5be79dd423fcabahrens * cr - credentials of caller
fa9e4066f08beec538e775443c5be79dd423fcabahrens * flag - flags:
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IS_ROOT_NODE - new object will be root
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IS_XATTR - new object is an attribute
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IS_REPLAY - intent log replay
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * OUT: oid - ID of created object
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_mknode(znode_t *dzp, vattr_t *vap, uint64_t *oid, dmu_tx_t *tx, cred_t *cr,
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint_t flag, znode_t **zpp, int bonuslen)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *dbp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_phys_t *pzp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens timestruc_t now;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t gen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int err;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(vap && (vap->va_mask & (AT_TYPE|AT_MODE)) == (AT_TYPE|AT_MODE));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfsvfs->z_assign >= TXG_INITIAL) { /* ZIL replay */
fa9e4066f08beec538e775443c5be79dd423fcabahrens *oid = vap->va_nodeid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens flag |= IS_REPLAY;
fa9e4066f08beec538e775443c5be79dd423fcabahrens now = vap->va_ctime; /* see zfs_replay_create() */
fa9e4066f08beec538e775443c5be79dd423fcabahrens gen = vap->va_nblocks; /* ditto */
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens *oid = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens gethrestime(&now);
fa9e4066f08beec538e775443c5be79dd423fcabahrens gen = dmu_tx_get_txg(tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Create a new DMU object.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock /*
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * There's currently no mechanism for pre-reading the blocks that will
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * be to needed allocate a new object, so we accept the small chance
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * that there will be an i/o error and we will fail one of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * assertions below.
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vap->va_type == VDIR) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & IS_REPLAY) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens err = zap_create_claim(zfsvfs->z_os, *oid,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_DIRECTORY_CONTENTS,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_ZNODE, sizeof (znode_phys_t) + bonuslen, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(err, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens *oid = zap_create(zfsvfs->z_os,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_DIRECTORY_CONTENTS,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_ZNODE, sizeof (znode_phys_t) + bonuslen, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & IS_REPLAY) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens err = dmu_object_claim(zfsvfs->z_os, *oid,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_PLAIN_FILE_CONTENTS, 0,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_ZNODE, sizeof (znode_phys_t) + bonuslen, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(err, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens *oid = dmu_object_alloc(zfsvfs->z_os,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_PLAIN_FILE_CONTENTS, 0,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_ZNODE, sizeof (znode_phys_t) + bonuslen, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock VERIFY(0 == dmu_bonus_hold(zfsvfs->z_os, *oid, NULL, &dbp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(dbp, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Initialize the znode physical data to zero.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(dbp->db_size >= sizeof (znode_phys_t));
fa9e4066f08beec538e775443c5be79dd423fcabahrens bzero(dbp->db_data, dbp->db_size);
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp = dbp->db_data;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If this is the root, fix up the half-initialized parent pointer
fa9e4066f08beec538e775443c5be79dd423fcabahrens * to reference the just-allocated physical data area.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & IS_ROOT_NODE) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_phys = pzp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_id = *oid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If parent is an xattr, so am I.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (dzp->z_phys->zp_flags & ZFS_XATTR)
fa9e4066f08beec538e775443c5be79dd423fcabahrens flag |= IS_XATTR;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vap->va_type == VBLK || vap->va_type == VCHR) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_rdev = vap->va_rdev;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vap->va_type == VDIR) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_size = 2; /* contents ("." and "..") */
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_links = (flag & (IS_ROOT_NODE | IS_XATTR)) ? 2 : 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_parent = dzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & IS_XATTR)
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_flags |= ZFS_XATTR;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_gen = gen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, pzp->zp_crtime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, pzp->zp_ctime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vap->va_mask & AT_ATIME) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&vap->va_atime, pzp->zp_atime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, pzp->zp_atime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vap->va_mask & AT_MTIME) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&vap->va_mtime, pzp->zp_mtime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, pzp->zp_mtime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens pzp->zp_mode = MAKEIMODE(vap->va_type, vap->va_mode);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp = zfs_znode_alloc(zfsvfs, dbp, *oid, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_perm_init(zp, dzp, flag, vap, tx, cr);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zpp) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmutex_t *hash_mtx = ZFS_OBJ_MUTEX(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(hash_mtx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_znode_dmu_init(zp);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock mutex_exit(hash_mtx);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens *zpp = zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZTOV(zp)->v_count = 0;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(dbp, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_znode_free(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_zget(zfsvfs_t *zfsvfs, uint64_t obj_num, znode_t **zpp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_object_info_t doi;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *db;
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock int err;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens *zpp = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_ENTER(zfsvfs, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock err = dmu_bonus_hold(zfsvfs->z_os, obj_num, NULL, &db);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (err) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_object_info_from_db(db, &doi);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (doi.doi_bonus_type != DMU_OT_ZNODE ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens doi.doi_bonus_size < sizeof (znode_phys_t)) {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(db, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (EINVAL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(db->db_object == obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(db->db_offset == -1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(db->db_data != NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp = dmu_buf_get_user(db);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(zp->z_id, ==, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_reap) {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(db, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ENOENT);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else if (zp->z_dbuf_held) {
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(db, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf_held = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens VFS_HOLD(zfsvfs->z_vfs);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (zp->z_active == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_active = 1;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens VN_HOLD(ZTOV(zp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens *zpp = zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Not found create new znode/vnode
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp = zfs_znode_alloc(zfsvfs, db, obj_num, doi.doi_data_block_size);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(zp->z_id, ==, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_znode_dmu_init(zp);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
fa9e4066f08beec538e775443c5be79dd423fcabahrens *zpp = zp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_delete(znode_t *zp, dmu_tx_t *tx)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *zfsvfs = zp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_ENTER(zfsvfs, zp->z_id);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_phys->zp_acl.z_acl_extern_obj) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = dmu_object_free(zfsvfs->z_os,
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_phys->zp_acl.z_acl_extern_obj, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(error, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = dmu_object_free(zfsvfs->z_os, zp->z_id, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(error, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_dbuf_held = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, zp->z_id);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(zp->z_dbuf, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_zinactive(znode_t *zp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *vp = ZTOV(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *zfsvfs = zp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t z_id = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(zp->z_dbuf_held && zp->z_phys);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Don't allow a zfs_zget() while were trying to release this znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_ENTER(zfsvfs, z_id);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&vp->v_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_count--;
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vp->v_count > 0 || vn_has_cached_data(vp)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If the hold count is greater than zero, somebody has
fa9e4066f08beec538e775443c5be79dd423fcabahrens * obtained a new reference on this znode while we were
fa9e4066f08beec538e775443c5be79dd423fcabahrens * processing it here, so we are done. If we still have
fa9e4066f08beec538e775443c5be79dd423fcabahrens * mapped pages then we are also done, since we don't
fa9e4066f08beec538e775443c5be79dd423fcabahrens * want to inactivate the znode until the pages get pushed.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * XXX - if vn_has_cached_data(vp) is true, but count == 0,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * this seems like it would leave the znode hanging with
fa9e4066f08beec538e775443c5be79dd423fcabahrens * no chance to go inactive...
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&vp->v_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&vp->v_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_active = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If this was the last reference to a file with no links,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * remove the file from the file system.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_reap) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id);
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* XATTR files are not put on the delete queue */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_phys->zp_flags & ZFS_XATTR) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_rmnode(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zfsvfs->z_delete_head.z_mutex);
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_insert_tail(&zfsvfs->z_delete_head.z_znodes, zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs->z_delete_head.z_znode_count++;
fa9e4066f08beec538e775443c5be79dd423fcabahrens cv_broadcast(&zfsvfs->z_delete_head.z_cv);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zfsvfs->z_delete_head.z_mutex);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens VFS_RELE(zfsvfs->z_vfs);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock ASSERT(zp->z_phys);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock ASSERT(zp->z_dbuf_held);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock zp->z_dbuf_held = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(zp->z_dbuf, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock VFS_RELE(zfsvfs->z_vfs);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_znode_free(znode_t *zp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *zfsvfs = zp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zfsvfs->z_znodes_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_remove(&zfsvfs->z_all_znodes, zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zfsvfs->z_znodes_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_cache_free(znode_cache, zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_time_stamper_locked(znode_t *zp, uint_t flag, dmu_tx_t *tx)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens timestruc_t now;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(MUTEX_HELD(&zp->z_lock));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens gethrestime(&now);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (tx) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(zp->z_dbuf, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_atime_dirty = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_seq++;
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_atime_dirty = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & AT_ATIME)
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, zp->z_phys->zp_atime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & AT_MTIME)
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, zp->z_phys->zp_mtime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (flag & AT_CTIME)
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&now, zp->z_phys->zp_ctime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Update the requested znode timestamps with the current time.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If we are in a transaction, then go ahead and mark the znode
fa9e4066f08beec538e775443c5be79dd423fcabahrens * dirty in the transaction so the timestamps will go to disk.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Otherwise, we will get pushed next time the znode is updated
fa9e4066f08beec538e775443c5be79dd423fcabahrens * in a transaction, or when this znode eventually goes inactive.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Why is this OK?
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 1 - Only the ACCESS time is ever updated outside of a transaction.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 2 - Multiple consecutive updates will be collapsed into a single
fa9e4066f08beec538e775443c5be79dd423fcabahrens * znode update by the transaction grouping semantics of the DMU.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_time_stamper(znode_t *zp, uint_t flag, dmu_tx_t *tx)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_time_stamper_locked(zp, flag, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&zp->z_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * Grow the block size for a file.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IN: zp - znode of file to free data in.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * size - requested block size
fa9e4066f08beec538e775443c5be79dd423fcabahrens * tx - open transaction.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * NOTE: this function assumes that the znode is write locked.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_grow_blocksize(znode_t *zp, uint64_t size, dmu_tx_t *tx)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens int error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens u_longlong_t dummy;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (size <= zp->z_blksz)
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If the file size is already greater than the current blocksize,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * we will not grow. If there is more than one block in a file,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the blocksize cannot change.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_blksz && zp->z_phys->zp_size > zp->z_blksz)
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = dmu_object_set_blocksize(zp->z_zfsvfs->z_os, zp->z_id,
fa9e4066f08beec538e775443c5be79dd423fcabahrens size, 0, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error == ENOTSUP)
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(error, ==, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* What blocksize did we actually get? */
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_object_size_from_db(zp->z_dbuf, &zp->z_blksz, &dummy);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This is a dummy interface used when pvn_vplist_dirty() should *not*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * be calling back into the fs for a putpage(). E.g.: when truncating
fa9e4066f08beec538e775443c5be79dd423fcabahrens * a file, the pages being "thrown away* don't need to be written out.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/* ARGSUSED */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic int
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_no_putpage(vnode_t *vp, page_t *pp, u_offset_t *offp, size_t *lenp,
fa9e4066f08beec538e775443c5be79dd423fcabahrens int flags, cred_t *cr)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * Free space in a file.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * IN: zp - znode of file to free data in.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * from - start of section to free.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * len - length of section to free (0 => to EOF).
fa9e4066f08beec538e775443c5be79dd423fcabahrens * flag - current file open mode flags.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * tx - open transaction.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * RETURN: 0 if success
fa9e4066f08beec538e775443c5be79dd423fcabahrens * error code if failure
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_freesp(znode_t *zp, uint64_t from, uint64_t len, int flag, dmu_tx_t *tx,
fa9e4066f08beec538e775443c5be79dd423fcabahrens cred_t *cr)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *vp = ZTOV(zp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t size = zp->z_phys->zp_size;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t end = from + len;
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin int error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
8ef9dde03e938929ceec1291f40c6a4e644e6783marks if (ZTOV(zp)->v_type == VFIFO)
8ef9dde03e938929ceec1291f40c6a4e644e6783marks return (0);
8ef9dde03e938929ceec1291f40c6a4e644e6783marks
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Nothing to do if file already at desired length.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (len == 0 && size == from) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Check for any locks in the region to be freed.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (MANDLOCK(vp, (mode_t)zp->z_phys->zp_mode)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t start;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (size > from)
fa9e4066f08beec538e775443c5be79dd423fcabahrens start = from;
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens start = size;
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (error = chklock(vp, FWRITE, start, 0, flag, NULL))
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (error);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (end > zp->z_blksz && (!ISP2(zp->z_blksz) ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_blksz < zp->z_zfsvfs->z_max_blksz)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t new_blksz;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * We are growing the file past the current block size.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zp->z_blksz > zp->z_zfsvfs->z_max_blksz) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(!ISP2(zp->z_blksz));
fa9e4066f08beec538e775443c5be79dd423fcabahrens new_blksz = MIN(end, SPA_MAXBLOCKSIZE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens new_blksz = MIN(end, zp->z_zfsvfs->z_max_blksz);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin zfs_grow_blocksize(zp, new_blksz, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (end > size || len == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_phys->zp_size = end;
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (from > size)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Clear any mapped pages in the truncated region.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens rw_enter(&zp->z_map_lock, RW_WRITER);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (vn_has_cached_data(vp)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens page_t *pp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t start = from & PAGEMASK;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int off = from & PAGEOFFSET;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (off != 0 && (pp = page_lookup(vp, start, SE_SHARED))) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * We need to zero a partial page.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens pagezero(pp, off, PAGESIZE - off);
fa9e4066f08beec538e775443c5be79dd423fcabahrens start += PAGESIZE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens page_unlock(pp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = pvn_vplist_dirty(vp, start, zfs_no_putpage,
fa9e4066f08beec538e775443c5be79dd423fcabahrens B_INVAL | B_TRUNC, cr);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(error == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens rw_exit(&zp->z_map_lock);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (len == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens len = -1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens else if (end > size)
fa9e4066f08beec538e775443c5be79dd423fcabahrens len = size - from;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock VERIFY(0 == dmu_free_range(zp->z_zfsvfs->z_os,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock zp->z_id, from, len, tx));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_create_fs(objset_t *os, cred_t *cr, dmu_tx_t *tx)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t moid, doid, roid = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t version = ZFS_VERSION;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *rootzp = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *vp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr_t vattr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * First attempt to create master node.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock /*
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * In an empty objset, there are no blocks to read and thus
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * there can be no i/o errors (which we assert below).
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock */
fa9e4066f08beec538e775443c5be79dd423fcabahrens moid = MASTER_NODE_OBJ;
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE,
fa9e4066f08beec538e775443c5be79dd423fcabahrens DMU_OT_NONE, 0, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(error == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Set starting attributes.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = zap_update(os, moid, ZFS_VERSION_OBJ, 8, 1, &version, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(error == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Create a delete queue.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens doid = zap_create(os, DMU_OT_DELETE_QUEUE, DMU_OT_NONE, 0, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = zap_add(os, moid, ZFS_DELETE_QUEUE, 8, 1, &doid, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(error == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Create root znode. Create minimal znode/vnode/zfsvfs
fa9e4066f08beec538e775443c5be79dd423fcabahrens * to allow zfs_mknode to work.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr.va_type = VDIR;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr.va_mode = S_IFDIR|0755;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr.va_uid = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vattr.va_gid = 3;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP);
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp->z_zfsvfs = &zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp->z_active = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp->z_reap = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp->z_atime_dirty = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens rootzp->z_dbuf_held = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp = ZTOV(rootzp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vn_reinit(vp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens vp->v_type = VDIR;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens bzero(&zfsvfs, sizeof (zfsvfs_t));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs.z_os = os;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs.z_assign = TXG_NOWAIT;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs.z_parent = &zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_init(&zfsvfs.z_znodes_lock, NULL, MUTEX_DEFAULT, NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_create(&zfsvfs.z_all_znodes, sizeof (znode_t),
fa9e4066f08beec538e775443c5be79dd423fcabahrens offsetof(znode_t, z_link_node));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_mknode(rootzp, &vattr, &roid, tx, cr, IS_ROOT_NODE, NULL, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3U(rootzp->z_id, ==, roid);
fa9e4066f08beec538e775443c5be79dd423fcabahrens error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &roid, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(error == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZTOV(rootzp)->v_count = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_cache_free(znode_cache, rootzp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}