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 (c) 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2012, 2015 by Delphix. All rights reserved. 24 */ 25 26 #ifndef _SYS_BPOBJ_H 27 #define _SYS_BPOBJ_H 28 29 #include <sys/dmu.h> 30 #include <sys/spa.h> 31 #include <sys/txg.h> 32 #include <sys/zio.h> 33 #include <sys/zfs_context.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 typedef struct bpobj_phys { 40 /* 41 * This is the bonus buffer for the dead lists. The object's 42 * contents is an array of bpo_entries blkptr_t's, representing 43 * a total of bpo_bytes physical space. 44 */ 45 uint64_t bpo_num_blkptrs; 46 uint64_t bpo_bytes; 47 uint64_t bpo_comp; 48 uint64_t bpo_uncomp; 49 uint64_t bpo_subobjs; 50 uint64_t bpo_num_subobjs; 51 } bpobj_phys_t; 52 53 #define BPOBJ_SIZE_V0 (2 * sizeof (uint64_t)) 54 #define BPOBJ_SIZE_V1 (4 * sizeof (uint64_t)) 55 56 typedef struct bpobj { 57 kmutex_t bpo_lock; 58 objset_t *bpo_os; 59 uint64_t bpo_object; 60 int bpo_epb; 61 uint8_t bpo_havecomp; 62 uint8_t bpo_havesubobj; 63 bpobj_phys_t *bpo_phys; 64 dmu_buf_t *bpo_dbuf; 65 dmu_buf_t *bpo_cached_dbuf; 66 } bpobj_t; 67 68 typedef int bpobj_itor_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx); 69 70 uint64_t bpobj_alloc(objset_t *mos, int blocksize, dmu_tx_t *tx); 71 uint64_t bpobj_alloc_empty(objset_t *os, int blocksize, dmu_tx_t *tx); 72 void bpobj_free(objset_t *os, uint64_t obj, dmu_tx_t *tx); 73 void bpobj_decr_empty(objset_t *os, dmu_tx_t *tx); 74 75 int bpobj_open(bpobj_t *bpo, objset_t *mos, uint64_t object); 76 void bpobj_close(bpobj_t *bpo); 77 boolean_t bpobj_is_open(const bpobj_t *bpo); 78 79 int bpobj_iterate(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx); 80 int bpobj_iterate_nofree(bpobj_t *bpo, bpobj_itor_t func, void *, dmu_tx_t *); 81 82 void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx); 83 void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, dmu_tx_t *tx); 84 85 int bpobj_space(bpobj_t *bpo, 86 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 87 int bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg, 88 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 89 boolean_t bpobj_is_empty(bpobj_t *bpo); 90 91 #ifdef __cplusplus 92 } 93 #endif 94 95 #endif /* _SYS_BPOBJ_H */ 96