1/*-
2 * Copyright (c) 2011, 2012, 2013 Spectra Logic Corporation
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions, and the following disclaimer,
10 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    substantially similar to the "NO WARRANTY" disclaimer below
13 *    ("Disclaimer") and any redistribution must be conditioned upon
14 *    including a substantially similar Disclaimer requirement for further
15 *    binary redistribution.
16 *
17 * NO WARRANTY
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGES.
29 *
30 * Authors: Justin T. Gibbs     (Spectra Logic Corporation)
31 */
32
33/**
34 * \file zpool_list.cc
35 *
36 * Implementation of the ZpoolList class.
37 */
38#include <sys/cdefs.h>
39#include <sys/byteorder.h>
40#include <sys/fs/zfs.h>
41
42#include <stdint.h>
43
44#include <libzfs.h>
45
46#include <list>
47#include <map>
48#include <string>
49
50#include <devdctl/guid.h>
51#include <devdctl/event.h>
52#include <devdctl/event_factory.h>
53#include <devdctl/exception.h>
54#include <devdctl/consumer.h>
55
56#include "vdev.h"
57#include "vdev_iterator.h"
58#include "zpool_list.h"
59#include "zfsd.h"
60
61/*============================ Namespace Control =============================*/
62using DevdCtl::Guid;
63
64/*=========================== Class Implementations ==========================*/
65/*--------------------------------- ZpoolList --------------------------------*/
66bool
67ZpoolList::ZpoolAll(zpool_handle_t *pool, nvlist_t *poolConfig, void *cbArg)
68{
69	return (true);
70}
71
72bool
73ZpoolList::ZpoolByGUID(zpool_handle_t *pool, nvlist_t *poolConfig,
74			   void *cbArg)
75{
76	Guid *desiredPoolGUID(static_cast<Guid *>(cbArg));
77	uint64_t poolGUID;
78
79	/* We are only intested in the pool that matches our pool GUID. */
80	return (nvlist_lookup_uint64(poolConfig, ZPOOL_CONFIG_POOL_GUID,
81				     &poolGUID) == 0
82	     && poolGUID == (uint64_t)*desiredPoolGUID);
83}
84
85bool
86ZpoolList::ZpoolByName(zpool_handle_t *pool, nvlist_t *poolConfig, void *cbArg)
87{
88	const string &desiredPoolName(*static_cast<const string *>(cbArg));
89
90	/* We are only intested in the pool that matches our pool GUID. */
91	return (desiredPoolName == zpool_get_name(pool));
92}
93
94int
95ZpoolList::LoadIterator(zpool_handle_t *pool, void *data)
96{
97	ZpoolList *zpl(reinterpret_cast<ZpoolList *>(data));
98	nvlist_t  *poolConfig(zpool_get_config(pool, NULL));
99
100	if (zpl->m_filter(pool, poolConfig, zpl->m_filterArg))
101		zpl->push_back(pool);
102	else
103		zpool_close(pool);
104	return (0);
105}
106
107ZpoolList::ZpoolList(PoolFilter_t *filter, void * filterArg)
108 : m_filter(filter),
109   m_filterArg(filterArg)
110{
111	zpool_iter(g_zfsHandle, LoadIterator, this);
112}
113
114ZpoolList::~ZpoolList()
115{
116	for (iterator it(begin()); it != end(); it++)
117		zpool_close(*it);
118
119	clear();
120}
121