1 /*
2  * CDDL HEADER START
3  *
4  * This file and its contents are supplied under the terms of the
5  * Common Development and Distribution License ("CDDL"), version 1.0.
6  * You may only use this file in accordance with the terms of version
7  * 1.0 of the CDDL.
8  *
9  * A full copy of the text of the CDDL should have accompanied this
10  * source.  A copy of the CDDL is also available via the Internet at
11  * http://www.illumos.org/license/CDDL.
12  *
13  * CDDL HEADER END
14  */
15 
16 /*
17  * Copyright (c) 2015 by Delphix. All rights reserved.
18  */
19 
20 #ifndef	_SYS_VDEV_INDIRECT_BIRTHS_H
21 #define	_SYS_VDEV_INDIRECT_BIRTHS_H
22 
23 #include <sys/dmu.h>
24 #include <sys/spa.h>
25 
26 #ifdef	__cplusplus
27 extern "C" {
28 #endif
29 
30 typedef struct vdev_indirect_birth_entry_phys {
31 	uint64_t vibe_offset;
32 	uint64_t vibe_phys_birth_txg;
33 } vdev_indirect_birth_entry_phys_t;
34 
35 typedef struct vdev_indirect_birth_phys {
36 	uint64_t	vib_count; /* count of v_i_b_entry_phys_t's */
37 } vdev_indirect_birth_phys_t;
38 
39 typedef struct vdev_indirect_births {
40 	uint64_t	vib_object;
41 
42 	/*
43 	 * Each entry indicates that everything up to but not including
44 	 * vibe_offset was copied in vibe_phys_birth_txg. Entries are sorted
45 	 * by increasing phys_birth, and also by increasing offset. See
46 	 * vdev_indirect_births_physbirth for usage.
47 	 */
48 	vdev_indirect_birth_entry_phys_t *vib_entries;
49 
50 	objset_t	*vib_objset;
51 
52 	dmu_buf_t	*vib_dbuf;
53 	vdev_indirect_birth_phys_t	*vib_phys;
54 } vdev_indirect_births_t;
55 
56 extern vdev_indirect_births_t *vdev_indirect_births_open(objset_t *os,
57     uint64_t object);
58 extern void vdev_indirect_births_close(vdev_indirect_births_t *vib);
59 extern boolean_t vdev_indirect_births_is_open(vdev_indirect_births_t *vib);
60 extern uint64_t vdev_indirect_births_alloc(objset_t *os, dmu_tx_t *tx);
61 extern void vdev_indirect_births_free(objset_t *os, uint64_t object,
62     dmu_tx_t *tx);
63 
64 extern uint64_t vdev_indirect_births_count(vdev_indirect_births_t *vib);
65 extern uint64_t vdev_indirect_births_object(vdev_indirect_births_t *vib);
66 
67 extern void vdev_indirect_births_add_entry(vdev_indirect_births_t *vib,
68     uint64_t offset, uint64_t txg, dmu_tx_t *tx);
69 
70 extern uint64_t vdev_indirect_births_physbirth(vdev_indirect_births_t *vib,
71     uint64_t offset, uint64_t asize);
72 
73 extern uint64_t vdev_indirect_births_last_entry_txg(
74     vdev_indirect_births_t *vib);
75 
76 #ifdef	__cplusplus
77 }
78 #endif
79 
80 #endif	/* _SYS_VDEV_INDIRECT_BIRTHS_H */
81