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 =============================*/
62 using DevdCtl::Guid;
63
64 /*=========================== Class Implementations ==========================*/
65 /*--------------------------------- ZpoolList --------------------------------*/
66 bool
ZpoolAll(zpool_handle_t * pool,nvlist_t * poolConfig,void * cbArg)67 ZpoolList::ZpoolAll(zpool_handle_t *pool, nvlist_t *poolConfig, void *cbArg)
68 {
69 return (true);
70 }
71
72 bool
ZpoolByGUID(zpool_handle_t * pool,nvlist_t * poolConfig,void * cbArg)73 ZpoolList::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
85 bool
ZpoolByName(zpool_handle_t * pool,nvlist_t * poolConfig,void * cbArg)86 ZpoolList::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
94 int
LoadIterator(zpool_handle_t * pool,void * data)95 ZpoolList::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
ZpoolList(PoolFilter_t * filter,void * filterArg)107 ZpoolList::ZpoolList(PoolFilter_t *filter, void * filterArg)
108 : m_filter(filter),
109 m_filterArg(filterArg)
110 {
111 zpool_iter(g_zfsHandle, LoadIterator, this);
112 }
113
~ZpoolList()114 ZpoolList::~ZpoolList()
115 {
116 for (iterator it(begin()); it != end(); it++)
117 zpool_close(*it);
118
119 clear();
120 }
121