1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5*ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6*ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 227f7322feSeschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 27fa9e4066Sahrens 28fa9e4066Sahrens #include <sys/dmu.h> 297f7322feSeschrock #include <sys/dmu_objset.h> 30fa9e4066Sahrens #include <sys/dmu_tx.h> 31fa9e4066Sahrens #include <sys/dsl_dataset.h> 32fa9e4066Sahrens #include <sys/dsl_dir.h> 33fa9e4066Sahrens #include <sys/dsl_prop.h> 34fa9e4066Sahrens #include <sys/spa.h> 35fa9e4066Sahrens #include <sys/zio_checksum.h> /* for the default checksum value */ 36fa9e4066Sahrens #include <sys/zap.h> 37fa9e4066Sahrens #include <sys/fs/zfs.h> 38fa9e4066Sahrens 39fa9e4066Sahrens #include "zfs_prop.h" 40fa9e4066Sahrens 41fa9e4066Sahrens static int 42fa9e4066Sahrens dodefault(const char *propname, int intsz, int numint, void *buf) 43fa9e4066Sahrens { 44fa9e4066Sahrens zfs_prop_t prop; 45fa9e4066Sahrens 46fa9e4066Sahrens if ((prop = zfs_name_to_prop(propname)) == ZFS_PROP_INVAL || 47fa9e4066Sahrens zfs_prop_readonly(prop)) 48fa9e4066Sahrens return (ENOENT); 49fa9e4066Sahrens 50fa9e4066Sahrens if (zfs_prop_get_type(prop) == prop_type_string) { 51fa9e4066Sahrens if (intsz != 1) 52fa9e4066Sahrens return (EOVERFLOW); 537f7322feSeschrock (void) strncpy(buf, zfs_prop_default_string(prop), numint); 54fa9e4066Sahrens } else { 55fa9e4066Sahrens if (intsz != 8 || numint < 1) 56fa9e4066Sahrens return (EOVERFLOW); 57fa9e4066Sahrens 58fa9e4066Sahrens *(uint64_t *)buf = zfs_prop_default_numeric(prop); 59fa9e4066Sahrens } 60fa9e4066Sahrens 61fa9e4066Sahrens return (0); 62fa9e4066Sahrens } 63fa9e4066Sahrens 64fa9e4066Sahrens static int 65fa9e4066Sahrens dsl_prop_get_impl(dsl_pool_t *dp, uint64_t ddobj, const char *propname, 66fa9e4066Sahrens int intsz, int numint, void *buf, char *setpoint) 67fa9e4066Sahrens { 68fa9e4066Sahrens int err = 0; 69fa9e4066Sahrens objset_t *mos = dp->dp_meta_objset; 70fa9e4066Sahrens 71fa9e4066Sahrens if (setpoint) 72fa9e4066Sahrens setpoint[0] = '\0'; 73fa9e4066Sahrens 74fa9e4066Sahrens ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock)); 75fa9e4066Sahrens 76fa9e4066Sahrens while (ddobj != 0) { 77*ea8dc4b6Seschrock dsl_dir_t *dd; 78*ea8dc4b6Seschrock err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd); 79*ea8dc4b6Seschrock if (err) 80*ea8dc4b6Seschrock break; 81fa9e4066Sahrens err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, 82fa9e4066Sahrens propname, intsz, numint, buf); 83fa9e4066Sahrens if (err != ENOENT) { 84fa9e4066Sahrens if (setpoint) 85fa9e4066Sahrens dsl_dir_name(dd, setpoint); 86fa9e4066Sahrens dsl_dir_close(dd, FTAG); 87fa9e4066Sahrens break; 88fa9e4066Sahrens } 89fa9e4066Sahrens ASSERT3U(err, ==, ENOENT); 90fa9e4066Sahrens ddobj = dd->dd_phys->dd_parent_obj; 91fa9e4066Sahrens dsl_dir_close(dd, FTAG); 92fa9e4066Sahrens } 93fa9e4066Sahrens if (err == ENOENT) 94fa9e4066Sahrens err = dodefault(propname, intsz, numint, buf); 95fa9e4066Sahrens 96fa9e4066Sahrens return (err); 97fa9e4066Sahrens } 98fa9e4066Sahrens 99fa9e4066Sahrens /* 100fa9e4066Sahrens * Register interest in the named property. We'll call the callback 101fa9e4066Sahrens * once to notify it of the current property value, and again each time 102fa9e4066Sahrens * the property changes, until this callback is unregistered. 103fa9e4066Sahrens * 104fa9e4066Sahrens * Return 0 on success, errno if the prop is not an integer value. 105fa9e4066Sahrens */ 106fa9e4066Sahrens int 107fa9e4066Sahrens dsl_prop_register(dsl_dataset_t *ds, const char *propname, 108fa9e4066Sahrens dsl_prop_changed_cb_t *callback, void *cbarg) 109fa9e4066Sahrens { 110fa9e4066Sahrens dsl_dir_t *dd; 111fa9e4066Sahrens uint64_t value; 112fa9e4066Sahrens dsl_prop_cb_record_t *cbr; 113fa9e4066Sahrens int err; 114fa9e4066Sahrens 115fa9e4066Sahrens dd = ds->ds_dir; 116fa9e4066Sahrens 117fa9e4066Sahrens rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 118fa9e4066Sahrens 119fa9e4066Sahrens err = dsl_prop_get_impl(dd->dd_pool, dd->dd_object, propname, 120fa9e4066Sahrens 8, 1, &value, NULL); 121fa9e4066Sahrens if (err == ENOENT) { 122fa9e4066Sahrens err = 0; 123fa9e4066Sahrens value = DSL_PROP_VALUE_UNDEFINED; 124fa9e4066Sahrens } 125fa9e4066Sahrens if (err != 0) { 126fa9e4066Sahrens rw_exit(&dd->dd_pool->dp_config_rwlock); 127fa9e4066Sahrens return (err); 128fa9e4066Sahrens } 129fa9e4066Sahrens 130fa9e4066Sahrens cbr = kmem_alloc(sizeof (dsl_prop_cb_record_t), KM_SLEEP); 131fa9e4066Sahrens cbr->cbr_propname = kmem_alloc(strlen(propname)+1, KM_SLEEP); 132fa9e4066Sahrens (void) strcpy((char *)cbr->cbr_propname, propname); 133fa9e4066Sahrens cbr->cbr_func = callback; 134fa9e4066Sahrens cbr->cbr_arg = cbarg; 135fa9e4066Sahrens mutex_enter(&dd->dd_lock); 136fa9e4066Sahrens list_insert_head(&dd->dd_prop_cbs, cbr); 137fa9e4066Sahrens mutex_exit(&dd->dd_lock); 138fa9e4066Sahrens 139fa9e4066Sahrens cbr->cbr_func(cbr->cbr_arg, value); 140fa9e4066Sahrens 141*ea8dc4b6Seschrock VERIFY(0 == dsl_dir_open_obj(dd->dd_pool, dd->dd_object, 142*ea8dc4b6Seschrock NULL, cbr, &dd)); 143fa9e4066Sahrens rw_exit(&dd->dd_pool->dp_config_rwlock); 144fa9e4066Sahrens /* Leave dataset open until this callback is unregistered */ 145fa9e4066Sahrens return (0); 146fa9e4066Sahrens } 147fa9e4066Sahrens 148fa9e4066Sahrens int 149fa9e4066Sahrens dsl_prop_get_ds(dsl_dir_t *dd, const char *propname, 150fa9e4066Sahrens int intsz, int numints, void *buf, char *setpoint) 151fa9e4066Sahrens { 152fa9e4066Sahrens int err; 153fa9e4066Sahrens 154fa9e4066Sahrens rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 155fa9e4066Sahrens err = dsl_prop_get_impl(dd->dd_pool, dd->dd_object, 156fa9e4066Sahrens propname, intsz, numints, buf, setpoint); 157fa9e4066Sahrens rw_exit(&dd->dd_pool->dp_config_rwlock); 158fa9e4066Sahrens 159fa9e4066Sahrens return (err); 160fa9e4066Sahrens } 161fa9e4066Sahrens 162fa9e4066Sahrens int 163fa9e4066Sahrens dsl_prop_get(const char *ddname, const char *propname, 164fa9e4066Sahrens int intsz, int numints, void *buf, char *setpoint) 165fa9e4066Sahrens { 166fa9e4066Sahrens dsl_dir_t *dd; 167fa9e4066Sahrens const char *tail; 168fa9e4066Sahrens int err; 169fa9e4066Sahrens 170*ea8dc4b6Seschrock err = dsl_dir_open(ddname, FTAG, &dd, &tail); 171*ea8dc4b6Seschrock if (err) 172*ea8dc4b6Seschrock return (err); 173fa9e4066Sahrens if (tail && tail[0] != '@') { 174fa9e4066Sahrens dsl_dir_close(dd, FTAG); 175fa9e4066Sahrens return (ENOENT); 176fa9e4066Sahrens } 177fa9e4066Sahrens 178fa9e4066Sahrens err = dsl_prop_get_ds(dd, propname, intsz, numints, buf, setpoint); 179fa9e4066Sahrens 180fa9e4066Sahrens dsl_dir_close(dd, FTAG); 181fa9e4066Sahrens return (err); 182fa9e4066Sahrens } 183fa9e4066Sahrens 184fa9e4066Sahrens /* 185fa9e4066Sahrens * Return 0 on success, ENOENT if ddname is invalid, EOVERFLOW if 186fa9e4066Sahrens * valuelen not big enough. 187fa9e4066Sahrens */ 188fa9e4066Sahrens int 189fa9e4066Sahrens dsl_prop_get_string(const char *ddname, const char *propname, 190fa9e4066Sahrens char *value, int valuelen, char *setpoint) 191fa9e4066Sahrens { 192fa9e4066Sahrens return (dsl_prop_get(ddname, propname, 1, valuelen, value, setpoint)); 193fa9e4066Sahrens } 194fa9e4066Sahrens 195fa9e4066Sahrens /* 196fa9e4066Sahrens * Get the current property value. It may have changed by the time this 197fa9e4066Sahrens * function returns, so it is NOT safe to follow up with 198fa9e4066Sahrens * dsl_prop_register() and assume that the value has not changed in 199fa9e4066Sahrens * between. 200fa9e4066Sahrens * 201fa9e4066Sahrens * Return 0 on success, ENOENT if ddname is invalid. 202fa9e4066Sahrens */ 203fa9e4066Sahrens int 204fa9e4066Sahrens dsl_prop_get_integer(const char *ddname, const char *propname, 205fa9e4066Sahrens uint64_t *valuep, char *setpoint) 206fa9e4066Sahrens { 207fa9e4066Sahrens return (dsl_prop_get(ddname, propname, 8, 1, valuep, setpoint)); 208fa9e4066Sahrens } 209fa9e4066Sahrens 210fa9e4066Sahrens int 211fa9e4066Sahrens dsl_prop_get_ds_integer(dsl_dir_t *dd, const char *propname, 212fa9e4066Sahrens uint64_t *valuep, char *setpoint) 213fa9e4066Sahrens { 214fa9e4066Sahrens return (dsl_prop_get_ds(dd, propname, 8, 1, valuep, setpoint)); 215fa9e4066Sahrens } 216fa9e4066Sahrens 217fa9e4066Sahrens /* 218fa9e4066Sahrens * Unregister this callback. Return 0 on success, ENOENT if ddname is 219fa9e4066Sahrens * invalid, ENOMSG if no matching callback registered. 220fa9e4066Sahrens */ 221fa9e4066Sahrens int 222fa9e4066Sahrens dsl_prop_unregister(dsl_dataset_t *ds, const char *propname, 223fa9e4066Sahrens dsl_prop_changed_cb_t *callback, void *cbarg) 224fa9e4066Sahrens { 225fa9e4066Sahrens dsl_dir_t *dd; 226fa9e4066Sahrens dsl_prop_cb_record_t *cbr; 227fa9e4066Sahrens 228fa9e4066Sahrens dd = ds->ds_dir; 229fa9e4066Sahrens 230fa9e4066Sahrens mutex_enter(&dd->dd_lock); 231fa9e4066Sahrens for (cbr = list_head(&dd->dd_prop_cbs); 232fa9e4066Sahrens cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { 233fa9e4066Sahrens if (strcmp(cbr->cbr_propname, propname) == 0 && 234fa9e4066Sahrens cbr->cbr_func == callback && 235fa9e4066Sahrens cbr->cbr_arg == cbarg) 236fa9e4066Sahrens break; 237fa9e4066Sahrens } 238fa9e4066Sahrens 239fa9e4066Sahrens if (cbr == NULL) { 240fa9e4066Sahrens mutex_exit(&dd->dd_lock); 241fa9e4066Sahrens return (ENOMSG); 242fa9e4066Sahrens } 243fa9e4066Sahrens 244fa9e4066Sahrens list_remove(&dd->dd_prop_cbs, cbr); 245fa9e4066Sahrens mutex_exit(&dd->dd_lock); 246fa9e4066Sahrens kmem_free((void*)cbr->cbr_propname, strlen(cbr->cbr_propname)+1); 247fa9e4066Sahrens kmem_free(cbr, sizeof (dsl_prop_cb_record_t)); 248fa9e4066Sahrens 249fa9e4066Sahrens /* Clean up from dsl_prop_register */ 250fa9e4066Sahrens dsl_dir_close(dd, cbr); 251fa9e4066Sahrens return (0); 252fa9e4066Sahrens } 253fa9e4066Sahrens 254fa9e4066Sahrens static void 255fa9e4066Sahrens dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, 256fa9e4066Sahrens const char *propname, uint64_t value, int first) 257fa9e4066Sahrens { 258fa9e4066Sahrens dsl_dir_t *dd; 259fa9e4066Sahrens dsl_prop_cb_record_t *cbr; 260fa9e4066Sahrens objset_t *mos = dp->dp_meta_objset; 261fa9e4066Sahrens int err; 262fa9e4066Sahrens 263fa9e4066Sahrens ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); 264*ea8dc4b6Seschrock err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd); 265*ea8dc4b6Seschrock if (err) 266*ea8dc4b6Seschrock return; 267fa9e4066Sahrens 268fa9e4066Sahrens if (!first) { 269fa9e4066Sahrens /* 270fa9e4066Sahrens * If the prop is set here, then this change is not 271fa9e4066Sahrens * being inherited here or below; stop the recursion. 272fa9e4066Sahrens */ 273fa9e4066Sahrens err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname, 274fa9e4066Sahrens 8, 1, &value); 275fa9e4066Sahrens if (err == 0) { 276fa9e4066Sahrens dsl_dir_close(dd, FTAG); 277fa9e4066Sahrens return; 278fa9e4066Sahrens } 279fa9e4066Sahrens ASSERT3U(err, ==, ENOENT); 280fa9e4066Sahrens } 281fa9e4066Sahrens 282fa9e4066Sahrens mutex_enter(&dd->dd_lock); 283fa9e4066Sahrens for (cbr = list_head(&dd->dd_prop_cbs); 284fa9e4066Sahrens cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { 285fa9e4066Sahrens if (strcmp(cbr->cbr_propname, propname) == 0) { 286fa9e4066Sahrens cbr->cbr_func(cbr->cbr_arg, value); 287fa9e4066Sahrens } 288fa9e4066Sahrens } 289fa9e4066Sahrens mutex_exit(&dd->dd_lock); 290fa9e4066Sahrens 291fa9e4066Sahrens if (dd->dd_phys->dd_child_dir_zapobj) { 292fa9e4066Sahrens zap_cursor_t zc; 293fa9e4066Sahrens zap_attribute_t za; 294fa9e4066Sahrens 295fa9e4066Sahrens for (zap_cursor_init(&zc, mos, 296fa9e4066Sahrens dd->dd_phys->dd_child_dir_zapobj); 297fa9e4066Sahrens zap_cursor_retrieve(&zc, &za) == 0; 298fa9e4066Sahrens zap_cursor_advance(&zc)) { 299fa9e4066Sahrens /* XXX recursion could blow stack; esp. za! */ 300fa9e4066Sahrens dsl_prop_changed_notify(dp, za.za_first_integer, 301fa9e4066Sahrens propname, value, FALSE); 302fa9e4066Sahrens } 30387e5029aSahrens zap_cursor_fini(&zc); 304fa9e4066Sahrens } 305fa9e4066Sahrens dsl_dir_close(dd, FTAG); 306fa9e4066Sahrens } 307fa9e4066Sahrens 308fa9e4066Sahrens struct prop_set_arg { 309fa9e4066Sahrens const char *name; 310fa9e4066Sahrens int intsz; 311fa9e4066Sahrens int numints; 312fa9e4066Sahrens const void *buf; 313fa9e4066Sahrens }; 314fa9e4066Sahrens 315fa9e4066Sahrens static int 316fa9e4066Sahrens dsl_prop_set_sync(dsl_dir_t *dd, void *arg, dmu_tx_t *tx) 317fa9e4066Sahrens { 318fa9e4066Sahrens struct prop_set_arg *psa = arg; 319fa9e4066Sahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 320fa9e4066Sahrens uint64_t zapobj = dd->dd_phys->dd_props_zapobj; 321fa9e4066Sahrens uint64_t intval; 322fa9e4066Sahrens int err, isint; 323fa9e4066Sahrens 324fa9e4066Sahrens rw_enter(&dd->dd_pool->dp_config_rwlock, RW_WRITER); 325fa9e4066Sahrens 326fa9e4066Sahrens isint = (dodefault(psa->name, 8, 1, &intval) == 0); 327fa9e4066Sahrens 328fa9e4066Sahrens if (psa->numints == 0) { 329fa9e4066Sahrens err = zap_remove(mos, zapobj, psa->name, tx); 330fa9e4066Sahrens if (err == ENOENT) /* that's fine. */ 331fa9e4066Sahrens err = 0; 332fa9e4066Sahrens if (err == 0 && isint) { 333fa9e4066Sahrens err = dsl_prop_get_impl(dd->dd_pool, 334fa9e4066Sahrens dd->dd_phys->dd_parent_obj, psa->name, 335fa9e4066Sahrens 8, 1, &intval, NULL); 336fa9e4066Sahrens } 337fa9e4066Sahrens } else { 338fa9e4066Sahrens err = zap_update(mos, zapobj, psa->name, 339fa9e4066Sahrens psa->intsz, psa->numints, psa->buf, tx); 340fa9e4066Sahrens if (isint) 341fa9e4066Sahrens intval = *(uint64_t *)psa->buf; 342fa9e4066Sahrens } 343fa9e4066Sahrens 344fa9e4066Sahrens if (err == 0 && isint) { 345fa9e4066Sahrens dsl_prop_changed_notify(dd->dd_pool, 346fa9e4066Sahrens dd->dd_object, psa->name, intval, TRUE); 347fa9e4066Sahrens } 348fa9e4066Sahrens rw_exit(&dd->dd_pool->dp_config_rwlock); 349fa9e4066Sahrens 350fa9e4066Sahrens return (err); 351fa9e4066Sahrens } 352fa9e4066Sahrens 353fa9e4066Sahrens int 354fa9e4066Sahrens dsl_prop_set(const char *ddname, const char *propname, 355fa9e4066Sahrens int intsz, int numints, const void *buf) 356fa9e4066Sahrens { 357fa9e4066Sahrens dsl_dir_t *dd; 358fa9e4066Sahrens int err; 359fa9e4066Sahrens struct prop_set_arg psa; 360fa9e4066Sahrens 361*ea8dc4b6Seschrock err = dsl_dir_open(ddname, FTAG, &dd, NULL); 362*ea8dc4b6Seschrock if (err) 363*ea8dc4b6Seschrock return (err); 364fa9e4066Sahrens 365fa9e4066Sahrens psa.name = propname; 366fa9e4066Sahrens psa.intsz = intsz; 367fa9e4066Sahrens psa.numints = numints; 368fa9e4066Sahrens psa.buf = buf; 369*ea8dc4b6Seschrock err = dsl_dir_sync_task(dd, dsl_prop_set_sync, &psa, 1<<20); 370fa9e4066Sahrens 371fa9e4066Sahrens dsl_dir_close(dd, FTAG); 372fa9e4066Sahrens 373fa9e4066Sahrens return (err); 374fa9e4066Sahrens } 3757f7322feSeschrock 3767f7322feSeschrock /* 3777f7322feSeschrock * Iterate over all properties for this dataset and return them in an nvlist. 3787f7322feSeschrock */ 3797f7322feSeschrock int 3807f7322feSeschrock dsl_prop_get_all(objset_t *os, nvlist_t **nvp) 3817f7322feSeschrock { 3827f7322feSeschrock dsl_dataset_t *ds = os->os->os_dsl_dataset; 3837f7322feSeschrock dsl_dir_t *dd, *parent; 3847f7322feSeschrock int err = 0; 3857f7322feSeschrock dsl_pool_t *dp; 3867f7322feSeschrock objset_t *mos; 3877f7322feSeschrock zap_cursor_t zc; 3887f7322feSeschrock zap_attribute_t za; 3897f7322feSeschrock char setpoint[MAXNAMELEN]; 3907f7322feSeschrock char *tmp; 3917f7322feSeschrock nvlist_t *prop; 3927f7322feSeschrock 3937f7322feSeschrock if (dsl_dataset_is_snapshot(ds)) { 3947f7322feSeschrock VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3957f7322feSeschrock return (0); 3967f7322feSeschrock } 3977f7322feSeschrock 3987f7322feSeschrock dd = ds->ds_dir; 3997f7322feSeschrock 4007f7322feSeschrock VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4017f7322feSeschrock 4027f7322feSeschrock dp = dd->dd_pool; 4037f7322feSeschrock mos = dp->dp_meta_objset; 4047f7322feSeschrock 4057f7322feSeschrock rw_enter(&dp->dp_config_rwlock, RW_READER); 4067f7322feSeschrock while (dd != NULL) { 4077f7322feSeschrock dsl_dir_name(dd, setpoint); 4087f7322feSeschrock 4097f7322feSeschrock for (zap_cursor_init(&zc, mos, dd->dd_phys->dd_props_zapobj); 4107f7322feSeschrock (err = zap_cursor_retrieve(&zc, &za)) == 0; 4117f7322feSeschrock zap_cursor_advance(&zc)) { 4127f7322feSeschrock if (nvlist_lookup_nvlist(*nvp, za.za_name, &prop) == 0) 4137f7322feSeschrock continue; 4147f7322feSeschrock 4157f7322feSeschrock VERIFY(nvlist_alloc(&prop, NV_UNIQUE_NAME, 4167f7322feSeschrock KM_SLEEP) == 0); 4177f7322feSeschrock if (za.za_integer_length == 1) { 4187f7322feSeschrock /* 4197f7322feSeschrock * String property 4207f7322feSeschrock */ 4217f7322feSeschrock 4227f7322feSeschrock tmp = kmem_alloc(za.za_num_integers, KM_SLEEP); 4237f7322feSeschrock err = zap_lookup(mos, 4247f7322feSeschrock dd->dd_phys->dd_props_zapobj, 4257f7322feSeschrock za.za_name, 1, za.za_num_integers, 4267f7322feSeschrock tmp); 4277f7322feSeschrock if (err != 0) { 4287f7322feSeschrock kmem_free(tmp, za.za_num_integers); 4297f7322feSeschrock break; 4307f7322feSeschrock } 4317f7322feSeschrock VERIFY(nvlist_add_string(prop, 4327f7322feSeschrock ZFS_PROP_VALUE, tmp) == 0); 4337f7322feSeschrock kmem_free(tmp, za.za_num_integers); 4347f7322feSeschrock } else { 4357f7322feSeschrock /* 4367f7322feSeschrock * Integer property 4377f7322feSeschrock */ 4387f7322feSeschrock ASSERT(za.za_integer_length == 8); 4397f7322feSeschrock (void) nvlist_add_uint64(prop, ZFS_PROP_VALUE, 4407f7322feSeschrock za.za_first_integer); 4417f7322feSeschrock } 4427f7322feSeschrock 4437f7322feSeschrock VERIFY(nvlist_add_string(prop, 4447f7322feSeschrock ZFS_PROP_SOURCE, setpoint) == 0); 4457f7322feSeschrock VERIFY(nvlist_add_nvlist(*nvp, za.za_name, 4467f7322feSeschrock prop) == 0); 4477f7322feSeschrock nvlist_free(prop); 4487f7322feSeschrock } 4497f7322feSeschrock zap_cursor_fini(&zc); 4507f7322feSeschrock 4517f7322feSeschrock if (err != ENOENT) { 4527f7322feSeschrock if (dd != ds->ds_dir) 4537f7322feSeschrock dsl_dir_close(dd, FTAG); 4547f7322feSeschrock break; 4557f7322feSeschrock } else { 4567f7322feSeschrock err = 0; 4577f7322feSeschrock } 4587f7322feSeschrock 4597f7322feSeschrock /* 4607f7322feSeschrock * Continue to parent. 4617f7322feSeschrock */ 4627f7322feSeschrock if (dd->dd_phys->dd_parent_obj == 0) 4637f7322feSeschrock parent = NULL; 4647f7322feSeschrock else 465*ea8dc4b6Seschrock err = dsl_dir_open_obj(dp, 466*ea8dc4b6Seschrock dd->dd_phys->dd_parent_obj, NULL, FTAG, &parent); 4677f7322feSeschrock if (dd != ds->ds_dir) 4687f7322feSeschrock dsl_dir_close(dd, FTAG); 469*ea8dc4b6Seschrock if (err) 470*ea8dc4b6Seschrock break; 4717f7322feSeschrock dd = parent; 4727f7322feSeschrock } 4737f7322feSeschrock rw_exit(&dp->dp_config_rwlock); 4747f7322feSeschrock 4757f7322feSeschrock return (err); 4767f7322feSeschrock } 477