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