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 * $FreeBSD$ 33 */ 34 35 /** 36 * \file zpool_list.cc 37 * 38 * Implementation of the ZpoolList class. 39 */ 40 #include <sys/cdefs.h> 41 #include <sys/byteorder.h> 42 #include <sys/fs/zfs.h> 43 44 #include <stdint.h> 45 46 #include <libzfs.h> 47 48 #include <list> 49 #include <map> 50 #include <string> 51 52 #include <devdctl/guid.h> 53 #include <devdctl/event.h> 54 #include <devdctl/event_factory.h> 55 #include <devdctl/exception.h> 56 #include <devdctl/consumer.h> 57 58 #include "vdev.h" 59 #include "vdev_iterator.h" 60 #include "zpool_list.h" 61 #include "zfsd.h" 62 63 /*============================ Namespace Control =============================*/ 64 using DevdCtl::Guid; 65 66 /*=========================== Class Implementations ==========================*/ 67 /*--------------------------------- ZpoolList --------------------------------*/ 68 bool 69 ZpoolList::ZpoolAll(zpool_handle_t *pool, nvlist_t *poolConfig, void *cbArg) 70 { 71 return (true); 72 } 73 74 bool 75 ZpoolList::ZpoolByGUID(zpool_handle_t *pool, nvlist_t *poolConfig, 76 void *cbArg) 77 { 78 Guid *desiredPoolGUID(static_cast<Guid *>(cbArg)); 79 uint64_t poolGUID; 80 81 /* We are only intested in the pool that matches our pool GUID. */ 82 return (nvlist_lookup_uint64(poolConfig, ZPOOL_CONFIG_POOL_GUID, 83 &poolGUID) == 0 84 && poolGUID == (uint64_t)*desiredPoolGUID); 85 } 86 87 bool 88 ZpoolList::ZpoolByName(zpool_handle_t *pool, nvlist_t *poolConfig, void *cbArg) 89 { 90 const string &desiredPoolName(*static_cast<const string *>(cbArg)); 91 92 /* We are only intested in the pool that matches our pool GUID. */ 93 return (desiredPoolName == zpool_get_name(pool)); 94 } 95 96 int 97 ZpoolList::LoadIterator(zpool_handle_t *pool, void *data) 98 { 99 ZpoolList *zpl(reinterpret_cast<ZpoolList *>(data)); 100 nvlist_t *poolConfig(zpool_get_config(pool, NULL)); 101 102 if (zpl->m_filter(pool, poolConfig, zpl->m_filterArg)) 103 zpl->push_back(pool); 104 else 105 zpool_close(pool); 106 return (0); 107 } 108 109 ZpoolList::ZpoolList(PoolFilter_t *filter, void * filterArg) 110 : m_filter(filter), 111 m_filterArg(filterArg) 112 { 113 zpool_iter(g_zfsHandle, LoadIterator, this); 114 } 115 116 ZpoolList::~ZpoolList() 117 { 118 for (iterator it(begin()); it != end(); it++) 119 zpool_close(*it); 120 121 clear(); 122 } 123