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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef	_SYS_DSL_POOL_H
     27 #define	_SYS_DSL_POOL_H
     28 
     29 #pragma ident	"@(#)dsl_pool.h	1.4	07/10/29 SMI"
     30 
     31 #include <sys/spa.h>
     32 #include <sys/txg.h>
     33 #include <sys/txg_impl.h>
     34 #include <sys/zfs_context.h>
     35 
     36 #ifdef	__cplusplus
     37 extern "C" {
     38 #endif
     39 
     40 struct objset;
     41 struct dsl_dir;
     42 
     43 typedef struct dsl_pool {
     44 	/* Immutable */
     45 	spa_t *dp_spa;
     46 	struct objset *dp_meta_objset;
     47 	struct dsl_dir *dp_root_dir;
     48 	struct dsl_dir *dp_mos_dir;
     49 	uint64_t dp_root_dir_obj;
     50 
     51 	/* No lock needed - sync context only */
     52 	blkptr_t dp_meta_rootbp;
     53 	list_t dp_synced_datasets;
     54 
     55 	/* Has its own locking */
     56 	tx_state_t dp_tx;
     57 	txg_list_t dp_dirty_datasets;
     58 	txg_list_t dp_dirty_dirs;
     59 	txg_list_t dp_sync_tasks;
     60 
     61 	/*
     62 	 * Protects administrative changes (properties, namespace)
     63 	 * It is only held for write in syncing context.  Therefore
     64 	 * syncing context does not need to ever have it for read, since
     65 	 * nobody else could possibly have it for write.
     66 	 */
     67 	krwlock_t dp_config_rwlock;
     68 } dsl_pool_t;
     69 
     70 int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
     71 void dsl_pool_close(dsl_pool_t *dp);
     72 dsl_pool_t *dsl_pool_create(spa_t *spa, uint64_t txg);
     73 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
     74 void dsl_pool_zil_clean(dsl_pool_t *dp);
     75 int dsl_pool_sync_context(dsl_pool_t *dp);
     76 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
     77 
     78 #ifdef	__cplusplus
     79 }
     80 #endif
     81 
     82 #endif /* _SYS_DSL_POOL_H */
     83