1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* 22168404Spjd * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23168404Spjd * Use is subject to license terms. 24168404Spjd */ 25296537Smav/* 26296537Smav * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>. 27296537Smav */ 28168404Spjd 29168404Spjd#include <solaris.h> 30168404Spjd#include <libintl.h> 31168404Spjd#include <libuutil.h> 32168404Spjd#include <stddef.h> 33168404Spjd#include <stdio.h> 34168404Spjd#include <stdlib.h> 35168404Spjd#include <strings.h> 36168404Spjd 37168404Spjd#include <libzfs.h> 38168404Spjd 39168404Spjd#include "zpool_util.h" 40168404Spjd 41168404Spjd/* 42168404Spjd * Private interface for iterating over pools specified on the command line. 43168404Spjd * Most consumers will call for_each_pool, but in order to support iostat, we 44168404Spjd * allow fined grained control through the zpool_list_t interface. 45168404Spjd */ 46168404Spjd 47168404Spjdtypedef struct zpool_node { 48168404Spjd zpool_handle_t *zn_handle; 49168404Spjd uu_avl_node_t zn_avlnode; 50168404Spjd int zn_mark; 51168404Spjd} zpool_node_t; 52168404Spjd 53168404Spjdstruct zpool_list { 54168404Spjd boolean_t zl_findall; 55168404Spjd uu_avl_t *zl_avl; 56168404Spjd uu_avl_pool_t *zl_pool; 57185029Spjd zprop_list_t **zl_proplist; 58168404Spjd}; 59168404Spjd 60168404Spjd/* ARGSUSED */ 61168404Spjdstatic int 62168404Spjdzpool_compare(const void *larg, const void *rarg, void *unused) 63168404Spjd{ 64168404Spjd zpool_handle_t *l = ((zpool_node_t *)larg)->zn_handle; 65168404Spjd zpool_handle_t *r = ((zpool_node_t *)rarg)->zn_handle; 66168404Spjd const char *lname = zpool_get_name(l); 67168404Spjd const char *rname = zpool_get_name(r); 68168404Spjd 69168404Spjd return (strcmp(lname, rname)); 70168404Spjd} 71168404Spjd 72168404Spjd/* 73168404Spjd * Callback function for pool_list_get(). Adds the given pool to the AVL tree 74168404Spjd * of known pools. 75168404Spjd */ 76168404Spjdstatic int 77168404Spjdadd_pool(zpool_handle_t *zhp, void *data) 78168404Spjd{ 79168404Spjd zpool_list_t *zlp = data; 80168404Spjd zpool_node_t *node = safe_malloc(sizeof (zpool_node_t)); 81168404Spjd uu_avl_index_t idx; 82168404Spjd 83168404Spjd node->zn_handle = zhp; 84168404Spjd uu_avl_node_init(node, &node->zn_avlnode, zlp->zl_pool); 85168404Spjd if (uu_avl_find(zlp->zl_avl, node, NULL, &idx) == NULL) { 86185029Spjd if (zlp->zl_proplist && 87185029Spjd zpool_expand_proplist(zhp, zlp->zl_proplist) != 0) { 88185029Spjd zpool_close(zhp); 89185029Spjd free(node); 90185029Spjd return (-1); 91185029Spjd } 92168404Spjd uu_avl_insert(zlp->zl_avl, node, idx); 93168404Spjd } else { 94168404Spjd zpool_close(zhp); 95168404Spjd free(node); 96168404Spjd return (-1); 97168404Spjd } 98168404Spjd 99168404Spjd return (0); 100168404Spjd} 101168404Spjd 102168404Spjd/* 103168404Spjd * Create a list of pools based on the given arguments. If we're given no 104168404Spjd * arguments, then iterate over all pools in the system and add them to the AVL 105168404Spjd * tree. Otherwise, add only those pool explicitly specified on the command 106168404Spjd * line. 107168404Spjd */ 108168404Spjdzpool_list_t * 109185029Spjdpool_list_get(int argc, char **argv, zprop_list_t **proplist, int *err) 110168404Spjd{ 111168404Spjd zpool_list_t *zlp; 112168404Spjd 113168404Spjd zlp = safe_malloc(sizeof (zpool_list_t)); 114168404Spjd 115168404Spjd zlp->zl_pool = uu_avl_pool_create("zfs_pool", sizeof (zpool_node_t), 116168404Spjd offsetof(zpool_node_t, zn_avlnode), zpool_compare, UU_DEFAULT); 117168404Spjd 118168404Spjd if (zlp->zl_pool == NULL) 119168404Spjd zpool_no_memory(); 120168404Spjd 121168404Spjd if ((zlp->zl_avl = uu_avl_create(zlp->zl_pool, NULL, 122168404Spjd UU_DEFAULT)) == NULL) 123168404Spjd zpool_no_memory(); 124168404Spjd 125185029Spjd zlp->zl_proplist = proplist; 126185029Spjd 127168404Spjd if (argc == 0) { 128168404Spjd (void) zpool_iter(g_zfs, add_pool, zlp); 129168404Spjd zlp->zl_findall = B_TRUE; 130168404Spjd } else { 131168404Spjd int i; 132168404Spjd 133168404Spjd for (i = 0; i < argc; i++) { 134168404Spjd zpool_handle_t *zhp; 135168404Spjd 136296537Smav if ((zhp = zpool_open_canfail(g_zfs, argv[i])) != 137296537Smav NULL) { 138185029Spjd if (add_pool(zhp, zlp) != 0) 139168404Spjd *err = B_TRUE; 140185029Spjd } else { 141168404Spjd *err = B_TRUE; 142185029Spjd } 143168404Spjd } 144168404Spjd } 145168404Spjd 146168404Spjd return (zlp); 147168404Spjd} 148168404Spjd 149168404Spjd/* 150168404Spjd * Search for any new pools, adding them to the list. We only add pools when no 151168404Spjd * options were given on the command line. Otherwise, we keep the list fixed as 152168404Spjd * those that were explicitly specified. 153168404Spjd */ 154168404Spjdvoid 155168404Spjdpool_list_update(zpool_list_t *zlp) 156168404Spjd{ 157168404Spjd if (zlp->zl_findall) 158168404Spjd (void) zpool_iter(g_zfs, add_pool, zlp); 159168404Spjd} 160168404Spjd 161168404Spjd/* 162168404Spjd * Iterate over all pools in the list, executing the callback for each 163168404Spjd */ 164168404Spjdint 165168404Spjdpool_list_iter(zpool_list_t *zlp, int unavail, zpool_iter_f func, 166168404Spjd void *data) 167168404Spjd{ 168168404Spjd zpool_node_t *node, *next_node; 169168404Spjd int ret = 0; 170168404Spjd 171168404Spjd for (node = uu_avl_first(zlp->zl_avl); node != NULL; node = next_node) { 172168404Spjd next_node = uu_avl_next(zlp->zl_avl, node); 173168404Spjd if (zpool_get_state(node->zn_handle) != POOL_STATE_UNAVAIL || 174168404Spjd unavail) 175168404Spjd ret |= func(node->zn_handle, data); 176168404Spjd } 177168404Spjd 178168404Spjd return (ret); 179168404Spjd} 180168404Spjd 181168404Spjd/* 182168404Spjd * Remove the given pool from the list. When running iostat, we want to remove 183168404Spjd * those pools that no longer exist. 184168404Spjd */ 185168404Spjdvoid 186168404Spjdpool_list_remove(zpool_list_t *zlp, zpool_handle_t *zhp) 187168404Spjd{ 188168404Spjd zpool_node_t search, *node; 189168404Spjd 190168404Spjd search.zn_handle = zhp; 191168404Spjd if ((node = uu_avl_find(zlp->zl_avl, &search, NULL, NULL)) != NULL) { 192168404Spjd uu_avl_remove(zlp->zl_avl, node); 193168404Spjd zpool_close(node->zn_handle); 194168404Spjd free(node); 195168404Spjd } 196168404Spjd} 197168404Spjd 198168404Spjd/* 199168404Spjd * Free all the handles associated with this list. 200168404Spjd */ 201168404Spjdvoid 202168404Spjdpool_list_free(zpool_list_t *zlp) 203168404Spjd{ 204168404Spjd uu_avl_walk_t *walk; 205168404Spjd zpool_node_t *node; 206168404Spjd 207168404Spjd if ((walk = uu_avl_walk_start(zlp->zl_avl, UU_WALK_ROBUST)) == NULL) { 208168404Spjd (void) fprintf(stderr, 209168404Spjd gettext("internal error: out of memory")); 210168404Spjd exit(1); 211168404Spjd } 212168404Spjd 213168404Spjd while ((node = uu_avl_walk_next(walk)) != NULL) { 214168404Spjd uu_avl_remove(zlp->zl_avl, node); 215168404Spjd zpool_close(node->zn_handle); 216168404Spjd free(node); 217168404Spjd } 218168404Spjd 219168404Spjd uu_avl_walk_end(walk); 220168404Spjd uu_avl_destroy(zlp->zl_avl); 221168404Spjd uu_avl_pool_destroy(zlp->zl_pool); 222168404Spjd 223168404Spjd free(zlp); 224168404Spjd} 225168404Spjd 226168404Spjd/* 227168404Spjd * Returns the number of elements in the pool list. 228168404Spjd */ 229168404Spjdint 230168404Spjdpool_list_count(zpool_list_t *zlp) 231168404Spjd{ 232168404Spjd return (uu_avl_numnodes(zlp->zl_avl)); 233168404Spjd} 234168404Spjd 235168404Spjd/* 236168404Spjd * High level function which iterates over all pools given on the command line, 237168404Spjd * using the pool_list_* interfaces. 238168404Spjd */ 239168404Spjdint 240168404Spjdfor_each_pool(int argc, char **argv, boolean_t unavail, 241185029Spjd zprop_list_t **proplist, zpool_iter_f func, void *data) 242168404Spjd{ 243168404Spjd zpool_list_t *list; 244168404Spjd int ret = 0; 245168404Spjd 246168404Spjd if ((list = pool_list_get(argc, argv, proplist, &ret)) == NULL) 247168404Spjd return (1); 248168404Spjd 249168404Spjd if (pool_list_iter(list, unavail, func, data) != 0) 250168404Spjd ret = 1; 251168404Spjd 252168404Spjd pool_list_free(list); 253168404Spjd 254168404Spjd return (ret); 255168404Spjd} 256