10fa1b3ccSPaul Dagnelie /* 20fa1b3ccSPaul Dagnelie * CDDL HEADER START 30fa1b3ccSPaul Dagnelie * 40fa1b3ccSPaul Dagnelie * The contents of this file are subject to the terms of the 50fa1b3ccSPaul Dagnelie * Common Development and Distribution License (the "License"). 60fa1b3ccSPaul Dagnelie * You may not use this file except in compliance with the License. 70fa1b3ccSPaul Dagnelie * 80fa1b3ccSPaul Dagnelie * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90fa1b3ccSPaul Dagnelie * or http://www.opensolaris.org/os/licensing. 100fa1b3ccSPaul Dagnelie * See the License for the specific language governing permissions 110fa1b3ccSPaul Dagnelie * and limitations under the License. 120fa1b3ccSPaul Dagnelie * 130fa1b3ccSPaul Dagnelie * When distributing Covered Code, include this CDDL HEADER in each 140fa1b3ccSPaul Dagnelie * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150fa1b3ccSPaul Dagnelie * If applicable, add the following below this CDDL HEADER, with the 160fa1b3ccSPaul Dagnelie * fields enclosed by brackets "[]" replaced with your own identifying 170fa1b3ccSPaul Dagnelie * information: Portions Copyright [yyyy] [name of copyright owner] 180fa1b3ccSPaul Dagnelie * 190fa1b3ccSPaul Dagnelie * CDDL HEADER END 200fa1b3ccSPaul Dagnelie */ 210fa1b3ccSPaul Dagnelie /* 220fa1b3ccSPaul Dagnelie * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 230fa1b3ccSPaul Dagnelie * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 240fa1b3ccSPaul Dagnelie * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 250fa1b3ccSPaul Dagnelie * Copyright (c) 2014, Joyent, Inc. All rights reserved. 260fa1b3ccSPaul Dagnelie * Copyright 2014 HybridCluster. All rights reserved. 270fa1b3ccSPaul Dagnelie * Copyright 2016 RackTop Systems. 280fa1b3ccSPaul Dagnelie * Copyright (c) 2014 Integros [integros.com] 290fa1b3ccSPaul Dagnelie */ 300fa1b3ccSPaul Dagnelie 310fa1b3ccSPaul Dagnelie #include <sys/dmu.h> 320fa1b3ccSPaul Dagnelie #include <sys/dmu_impl.h> 330fa1b3ccSPaul Dagnelie #include <sys/dmu_tx.h> 340fa1b3ccSPaul Dagnelie #include <sys/dbuf.h> 350fa1b3ccSPaul Dagnelie #include <sys/dnode.h> 360fa1b3ccSPaul Dagnelie #include <sys/zfs_context.h> 370fa1b3ccSPaul Dagnelie #include <sys/dmu_objset.h> 380fa1b3ccSPaul Dagnelie #include <sys/dmu_traverse.h> 390fa1b3ccSPaul Dagnelie #include <sys/dsl_dataset.h> 400fa1b3ccSPaul Dagnelie #include <sys/dsl_dir.h> 410fa1b3ccSPaul Dagnelie #include <sys/dsl_prop.h> 420fa1b3ccSPaul Dagnelie #include <sys/dsl_pool.h> 430fa1b3ccSPaul Dagnelie #include <sys/dsl_synctask.h> 440fa1b3ccSPaul Dagnelie #include <sys/zfs_ioctl.h> 450fa1b3ccSPaul Dagnelie #include <sys/zap.h> 460fa1b3ccSPaul Dagnelie #include <sys/zio_checksum.h> 470fa1b3ccSPaul Dagnelie #include <sys/zfs_znode.h> 480fa1b3ccSPaul Dagnelie #include <zfs_fletcher.h> 490fa1b3ccSPaul Dagnelie #include <sys/avl.h> 500fa1b3ccSPaul Dagnelie #include <sys/ddt.h> 510fa1b3ccSPaul Dagnelie #include <sys/zfs_onexit.h> 520fa1b3ccSPaul Dagnelie #include <sys/dmu_recv.h> 530fa1b3ccSPaul Dagnelie #include <sys/dsl_destroy.h> 540fa1b3ccSPaul Dagnelie #include <sys/blkptr.h> 550fa1b3ccSPaul Dagnelie #include <sys/dsl_bookmark.h> 560fa1b3ccSPaul Dagnelie #include <sys/zfeature.h> 570fa1b3ccSPaul Dagnelie #include <sys/bqueue.h> 580fa1b3ccSPaul Dagnelie 590fa1b3ccSPaul Dagnelie int zfs_recv_queue_length = SPA_MAXBLOCKSIZE; 600fa1b3ccSPaul Dagnelie 610fa1b3ccSPaul Dagnelie static char *dmu_recv_tag = "dmu_recv_tag"; 620fa1b3ccSPaul Dagnelie const char *recv_clone_name = "%recv"; 630fa1b3ccSPaul Dagnelie 640fa1b3ccSPaul Dagnelie static void byteswap_record(dmu_replay_record_t *drr); 650fa1b3ccSPaul Dagnelie 660fa1b3ccSPaul Dagnelie typedef struct dmu_recv_begin_arg { 670fa1b3ccSPaul Dagnelie const char *drba_origin; 680fa1b3ccSPaul Dagnelie dmu_recv_cookie_t *drba_cookie; 690fa1b3ccSPaul Dagnelie cred_t *drba_cred; 70eb633035STom Caputi dsl_crypto_params_t *drba_dcp; 710fa1b3ccSPaul Dagnelie } dmu_recv_begin_arg_t; 720fa1b3ccSPaul Dagnelie 730fa1b3ccSPaul Dagnelie static int 740fa1b3ccSPaul Dagnelie recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds, 750fa1b3ccSPaul Dagnelie uint64_t fromguid) 760fa1b3ccSPaul Dagnelie { 770fa1b3ccSPaul Dagnelie uint64_t val; 780fa1b3ccSPaul Dagnelie int error; 790fa1b3ccSPaul Dagnelie dsl_pool_t *dp = ds->ds_dir->dd_pool; 80eb633035STom Caputi struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 81eb633035STom Caputi uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 82eb633035STom Caputi boolean_t encrypted = ds->ds_dir->dd_crypto_obj != 0; 83eb633035STom Caputi boolean_t raw = (featureflags & DMU_BACKUP_FEATURE_RAW) != 0; 84eb633035STom Caputi boolean_t embed = (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) != 0; 850fa1b3ccSPaul Dagnelie 860fa1b3ccSPaul Dagnelie /* temporary clone name must not exist */ 870fa1b3ccSPaul Dagnelie error = zap_lookup(dp->dp_meta_objset, 880fa1b3ccSPaul Dagnelie dsl_dir_phys(ds->ds_dir)->dd_child_dir_zapobj, recv_clone_name, 890fa1b3ccSPaul Dagnelie 8, 1, &val); 900fa1b3ccSPaul Dagnelie if (error != ENOENT) 910fa1b3ccSPaul Dagnelie return (error == 0 ? EBUSY : error); 920fa1b3ccSPaul Dagnelie 930fa1b3ccSPaul Dagnelie /* new snapshot name must not exist */ 940fa1b3ccSPaul Dagnelie error = zap_lookup(dp->dp_meta_objset, 950fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds)->ds_snapnames_zapobj, 960fa1b3ccSPaul Dagnelie drba->drba_cookie->drc_tosnap, 8, 1, &val); 970fa1b3ccSPaul Dagnelie if (error != ENOENT) 980fa1b3ccSPaul Dagnelie return (error == 0 ? EEXIST : error); 990fa1b3ccSPaul Dagnelie 1000fa1b3ccSPaul Dagnelie /* 1010fa1b3ccSPaul Dagnelie * Check snapshot limit before receiving. We'll recheck again at the 1020fa1b3ccSPaul Dagnelie * end, but might as well abort before receiving if we're already over 1030fa1b3ccSPaul Dagnelie * the limit. 1040fa1b3ccSPaul Dagnelie * 1050fa1b3ccSPaul Dagnelie * Note that we do not check the file system limit with 1060fa1b3ccSPaul Dagnelie * dsl_dir_fscount_check because the temporary %clones don't count 1070fa1b3ccSPaul Dagnelie * against that limit. 1080fa1b3ccSPaul Dagnelie */ 1090fa1b3ccSPaul Dagnelie error = dsl_fs_ss_limit_check(ds->ds_dir, 1, ZFS_PROP_SNAPSHOT_LIMIT, 1100fa1b3ccSPaul Dagnelie NULL, drba->drba_cred); 1110fa1b3ccSPaul Dagnelie if (error != 0) 1120fa1b3ccSPaul Dagnelie return (error); 1130fa1b3ccSPaul Dagnelie 1140fa1b3ccSPaul Dagnelie if (fromguid != 0) { 1150fa1b3ccSPaul Dagnelie dsl_dataset_t *snap; 1160fa1b3ccSPaul Dagnelie uint64_t obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; 1170fa1b3ccSPaul Dagnelie 118eb633035STom Caputi /* Can't raw receive on top of an unencrypted dataset */ 119eb633035STom Caputi if (!encrypted && raw) 120eb633035STom Caputi return (SET_ERROR(EINVAL)); 121eb633035STom Caputi 122eb633035STom Caputi /* Encryption is incompatible with embedded data */ 123eb633035STom Caputi if (encrypted && embed) 124eb633035STom Caputi return (SET_ERROR(EINVAL)); 125eb633035STom Caputi 1260fa1b3ccSPaul Dagnelie /* Find snapshot in this dir that matches fromguid. */ 1270fa1b3ccSPaul Dagnelie while (obj != 0) { 1280fa1b3ccSPaul Dagnelie error = dsl_dataset_hold_obj(dp, obj, FTAG, 1290fa1b3ccSPaul Dagnelie &snap); 1300fa1b3ccSPaul Dagnelie if (error != 0) 1310fa1b3ccSPaul Dagnelie return (SET_ERROR(ENODEV)); 1320fa1b3ccSPaul Dagnelie if (snap->ds_dir != ds->ds_dir) { 1330fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 1340fa1b3ccSPaul Dagnelie return (SET_ERROR(ENODEV)); 1350fa1b3ccSPaul Dagnelie } 1360fa1b3ccSPaul Dagnelie if (dsl_dataset_phys(snap)->ds_guid == fromguid) 1370fa1b3ccSPaul Dagnelie break; 1380fa1b3ccSPaul Dagnelie obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 1390fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 1400fa1b3ccSPaul Dagnelie } 1410fa1b3ccSPaul Dagnelie if (obj == 0) 1420fa1b3ccSPaul Dagnelie return (SET_ERROR(ENODEV)); 1430fa1b3ccSPaul Dagnelie 1440fa1b3ccSPaul Dagnelie if (drba->drba_cookie->drc_force) { 145eb633035STom Caputi drba->drba_cookie->drc_fromsnapobj = obj; 1460fa1b3ccSPaul Dagnelie } else { 1470fa1b3ccSPaul Dagnelie /* 1480fa1b3ccSPaul Dagnelie * If we are not forcing, there must be no 1490fa1b3ccSPaul Dagnelie * changes since fromsnap. 1500fa1b3ccSPaul Dagnelie */ 1510fa1b3ccSPaul Dagnelie if (dsl_dataset_modified_since_snap(ds, snap)) { 1520fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 1530fa1b3ccSPaul Dagnelie return (SET_ERROR(ETXTBSY)); 1540fa1b3ccSPaul Dagnelie } 155eb633035STom Caputi drba->drba_cookie->drc_fromsnapobj = 156eb633035STom Caputi ds->ds_prev->ds_object; 1570fa1b3ccSPaul Dagnelie } 1580fa1b3ccSPaul Dagnelie 1590fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 1600fa1b3ccSPaul Dagnelie } else { 1610fa1b3ccSPaul Dagnelie /* if full, then must be forced */ 1620fa1b3ccSPaul Dagnelie if (!drba->drba_cookie->drc_force) 1630fa1b3ccSPaul Dagnelie return (SET_ERROR(EEXIST)); 164eb633035STom Caputi 165eb633035STom Caputi /* 166eb633035STom Caputi * We don't support using zfs recv -F to blow away 167eb633035STom Caputi * encrypted filesystems. This would require the 168eb633035STom Caputi * dsl dir to point to the old encryption key and 169eb633035STom Caputi * the new one at the same time during the receive. 170eb633035STom Caputi */ 171eb633035STom Caputi if ((!encrypted && raw) || encrypted) 172eb633035STom Caputi return (SET_ERROR(EINVAL)); 173eb633035STom Caputi 174eb633035STom Caputi /* 175eb633035STom Caputi * Perform the same encryption checks we would if 176eb633035STom Caputi * we were creating a new dataset from scratch. 177eb633035STom Caputi */ 178eb633035STom Caputi if (!raw) { 179eb633035STom Caputi boolean_t will_encrypt; 180eb633035STom Caputi 181eb633035STom Caputi error = dmu_objset_create_crypt_check( 182eb633035STom Caputi ds->ds_dir->dd_parent, drba->drba_dcp, 183eb633035STom Caputi &will_encrypt); 184eb633035STom Caputi if (error != 0) 185eb633035STom Caputi return (error); 186eb633035STom Caputi 187eb633035STom Caputi if (will_encrypt && embed) 188eb633035STom Caputi return (SET_ERROR(EINVAL)); 189eb633035STom Caputi } 190eb633035STom Caputi 191eb633035STom Caputi drba->drba_cookie->drc_fromsnapobj = 0; 1920fa1b3ccSPaul Dagnelie } 1930fa1b3ccSPaul Dagnelie 1940fa1b3ccSPaul Dagnelie return (0); 1950fa1b3ccSPaul Dagnelie 1960fa1b3ccSPaul Dagnelie } 1970fa1b3ccSPaul Dagnelie 1980fa1b3ccSPaul Dagnelie static int 1990fa1b3ccSPaul Dagnelie dmu_recv_begin_check(void *arg, dmu_tx_t *tx) 2000fa1b3ccSPaul Dagnelie { 2010fa1b3ccSPaul Dagnelie dmu_recv_begin_arg_t *drba = arg; 2020fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 2030fa1b3ccSPaul Dagnelie struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 2040fa1b3ccSPaul Dagnelie uint64_t fromguid = drrb->drr_fromguid; 2050fa1b3ccSPaul Dagnelie int flags = drrb->drr_flags; 206eb633035STom Caputi ds_hold_flags_t dsflags = 0; 2070fa1b3ccSPaul Dagnelie int error; 2080fa1b3ccSPaul Dagnelie uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 2090fa1b3ccSPaul Dagnelie dsl_dataset_t *ds; 2100fa1b3ccSPaul Dagnelie const char *tofs = drba->drba_cookie->drc_tofs; 2110fa1b3ccSPaul Dagnelie 2120fa1b3ccSPaul Dagnelie /* already checked */ 2130fa1b3ccSPaul Dagnelie ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 2140fa1b3ccSPaul Dagnelie ASSERT(!(featureflags & DMU_BACKUP_FEATURE_RESUMING)); 2150fa1b3ccSPaul Dagnelie 2160fa1b3ccSPaul Dagnelie if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 2170fa1b3ccSPaul Dagnelie DMU_COMPOUNDSTREAM || 2180fa1b3ccSPaul Dagnelie drrb->drr_type >= DMU_OST_NUMTYPES || 2190fa1b3ccSPaul Dagnelie ((flags & DRR_FLAG_CLONE) && drba->drba_origin == NULL)) 2200fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 2210fa1b3ccSPaul Dagnelie 2220fa1b3ccSPaul Dagnelie /* Verify pool version supports SA if SA_SPILL feature set */ 2230fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 2240fa1b3ccSPaul Dagnelie spa_version(dp->dp_spa) < SPA_VERSION_SA) 2250fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2260fa1b3ccSPaul Dagnelie 2270fa1b3ccSPaul Dagnelie if (drba->drba_cookie->drc_resumable && 2280fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EXTENSIBLE_DATASET)) 2290fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2300fa1b3ccSPaul Dagnelie 2310fa1b3ccSPaul Dagnelie /* 2320fa1b3ccSPaul Dagnelie * The receiving code doesn't know how to translate a WRITE_EMBEDDED 2330fa1b3ccSPaul Dagnelie * record to a plain WRITE record, so the pool must have the 2340fa1b3ccSPaul Dagnelie * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 2350fa1b3ccSPaul Dagnelie * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 2360fa1b3ccSPaul Dagnelie */ 2370fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 2380fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 2390fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2400fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LZ4) && 2410fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 2420fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2430fa1b3ccSPaul Dagnelie 2440fa1b3ccSPaul Dagnelie /* 2450fa1b3ccSPaul Dagnelie * The receiving code doesn't know how to translate large blocks 2460fa1b3ccSPaul Dagnelie * to smaller ones, so the pool must have the LARGE_BLOCKS 2470fa1b3ccSPaul Dagnelie * feature enabled if the stream has LARGE_BLOCKS. Same with 2480fa1b3ccSPaul Dagnelie * large dnodes. 2490fa1b3ccSPaul Dagnelie */ 2500fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 2510fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_BLOCKS)) 2520fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2530fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LARGE_DNODE) && 2540fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_DNODE)) 2550fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 2560fa1b3ccSPaul Dagnelie 257eb633035STom Caputi if ((featureflags & DMU_BACKUP_FEATURE_RAW)) { 258eb633035STom Caputi /* raw receives require the encryption feature */ 259eb633035STom Caputi if (!spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_ENCRYPTION)) 260eb633035STom Caputi return (SET_ERROR(ENOTSUP)); 261eb633035STom Caputi 262eb633035STom Caputi /* embedded data is incompatible with encryption and raw recv */ 263eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) 264eb633035STom Caputi return (SET_ERROR(EINVAL)); 265eb633035STom Caputi 266eb633035STom Caputi /* raw receives require spill block allocation flag */ 267eb633035STom Caputi if (!(flags & DRR_FLAG_SPILL_BLOCK)) 268eb633035STom Caputi return (SET_ERROR(ZFS_ERR_SPILL_BLOCK_FLAG_MISSING)); 269eb633035STom Caputi } else { 270eb633035STom Caputi dsflags |= DS_HOLD_FLAG_DECRYPT; 271eb633035STom Caputi } 272eb633035STom Caputi 273eb633035STom Caputi error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); 2740fa1b3ccSPaul Dagnelie if (error == 0) { 2750fa1b3ccSPaul Dagnelie /* target fs already exists; recv into temp clone */ 2760fa1b3ccSPaul Dagnelie 2770fa1b3ccSPaul Dagnelie /* Can't recv a clone into an existing fs */ 2780fa1b3ccSPaul Dagnelie if (flags & DRR_FLAG_CLONE || drba->drba_origin) { 279eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 2800fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 2810fa1b3ccSPaul Dagnelie } 2820fa1b3ccSPaul Dagnelie 2830fa1b3ccSPaul Dagnelie error = recv_begin_check_existing_impl(drba, ds, fromguid); 284eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 2850fa1b3ccSPaul Dagnelie } else if (error == ENOENT) { 2860fa1b3ccSPaul Dagnelie /* target fs does not exist; must be a full backup or clone */ 2870fa1b3ccSPaul Dagnelie char buf[ZFS_MAX_DATASET_NAME_LEN]; 2880fa1b3ccSPaul Dagnelie 2890fa1b3ccSPaul Dagnelie /* 2900fa1b3ccSPaul Dagnelie * If it's a non-clone incremental, we are missing the 2910fa1b3ccSPaul Dagnelie * target fs, so fail the recv. 2920fa1b3ccSPaul Dagnelie */ 2930fa1b3ccSPaul Dagnelie if (fromguid != 0 && !(flags & DRR_FLAG_CLONE || 2940fa1b3ccSPaul Dagnelie drba->drba_origin)) 2950fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOENT)); 2960fa1b3ccSPaul Dagnelie 2970fa1b3ccSPaul Dagnelie /* 2980fa1b3ccSPaul Dagnelie * If we're receiving a full send as a clone, and it doesn't 2990fa1b3ccSPaul Dagnelie * contain all the necessary free records and freeobject 3000fa1b3ccSPaul Dagnelie * records, reject it. 3010fa1b3ccSPaul Dagnelie */ 3020fa1b3ccSPaul Dagnelie if (fromguid == 0 && drba->drba_origin && 3030fa1b3ccSPaul Dagnelie !(flags & DRR_FLAG_FREERECORDS)) 3040fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 3050fa1b3ccSPaul Dagnelie 3060fa1b3ccSPaul Dagnelie /* Open the parent of tofs */ 3070fa1b3ccSPaul Dagnelie ASSERT3U(strlen(tofs), <, sizeof (buf)); 3080fa1b3ccSPaul Dagnelie (void) strlcpy(buf, tofs, strrchr(tofs, '/') - tofs + 1); 309*a60ca23dSTom Caputi error = dsl_dataset_hold(dp, buf, FTAG, &ds); 3100fa1b3ccSPaul Dagnelie if (error != 0) 3110fa1b3ccSPaul Dagnelie return (error); 3120fa1b3ccSPaul Dagnelie 313eb633035STom Caputi if ((featureflags & DMU_BACKUP_FEATURE_RAW) == 0 && 314eb633035STom Caputi drba->drba_origin == NULL) { 315eb633035STom Caputi boolean_t will_encrypt; 316eb633035STom Caputi 317eb633035STom Caputi /* 318eb633035STom Caputi * Check that we aren't breaking any encryption rules 319eb633035STom Caputi * and that we have all the parameters we need to 320eb633035STom Caputi * create an encrypted dataset if necessary. If we are 321eb633035STom Caputi * making an encrypted dataset the stream can't have 322eb633035STom Caputi * embedded data. 323eb633035STom Caputi */ 324eb633035STom Caputi error = dmu_objset_create_crypt_check(ds->ds_dir, 325eb633035STom Caputi drba->drba_dcp, &will_encrypt); 326eb633035STom Caputi if (error != 0) { 327*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 328eb633035STom Caputi return (error); 329eb633035STom Caputi } 330eb633035STom Caputi 331eb633035STom Caputi if (will_encrypt && 332eb633035STom Caputi (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)) { 333*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 334eb633035STom Caputi return (SET_ERROR(EINVAL)); 335eb633035STom Caputi } 336eb633035STom Caputi } 337eb633035STom Caputi 3380fa1b3ccSPaul Dagnelie /* 3390fa1b3ccSPaul Dagnelie * Check filesystem and snapshot limits before receiving. We'll 3400fa1b3ccSPaul Dagnelie * recheck snapshot limits again at the end (we create the 3410fa1b3ccSPaul Dagnelie * filesystems and increment those counts during begin_sync). 3420fa1b3ccSPaul Dagnelie */ 3430fa1b3ccSPaul Dagnelie error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 3440fa1b3ccSPaul Dagnelie ZFS_PROP_FILESYSTEM_LIMIT, NULL, drba->drba_cred); 3450fa1b3ccSPaul Dagnelie if (error != 0) { 346*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3470fa1b3ccSPaul Dagnelie return (error); 3480fa1b3ccSPaul Dagnelie } 3490fa1b3ccSPaul Dagnelie 3500fa1b3ccSPaul Dagnelie error = dsl_fs_ss_limit_check(ds->ds_dir, 1, 3510fa1b3ccSPaul Dagnelie ZFS_PROP_SNAPSHOT_LIMIT, NULL, drba->drba_cred); 3520fa1b3ccSPaul Dagnelie if (error != 0) { 353*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3540fa1b3ccSPaul Dagnelie return (error); 3550fa1b3ccSPaul Dagnelie } 3560fa1b3ccSPaul Dagnelie 3570fa1b3ccSPaul Dagnelie if (drba->drba_origin != NULL) { 3580fa1b3ccSPaul Dagnelie dsl_dataset_t *origin; 359eb633035STom Caputi 360*a60ca23dSTom Caputi error = dsl_dataset_hold(dp, drba->drba_origin, 361*a60ca23dSTom Caputi FTAG, &origin); 3620fa1b3ccSPaul Dagnelie if (error != 0) { 363*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3640fa1b3ccSPaul Dagnelie return (error); 3650fa1b3ccSPaul Dagnelie } 3660fa1b3ccSPaul Dagnelie if (!origin->ds_is_snapshot) { 367*a60ca23dSTom Caputi dsl_dataset_rele(origin, FTAG); 368*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3690fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 3700fa1b3ccSPaul Dagnelie } 3710fa1b3ccSPaul Dagnelie if (dsl_dataset_phys(origin)->ds_guid != fromguid && 3720fa1b3ccSPaul Dagnelie fromguid != 0) { 373*a60ca23dSTom Caputi dsl_dataset_rele(origin, FTAG); 374*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3750fa1b3ccSPaul Dagnelie return (SET_ERROR(ENODEV)); 3760fa1b3ccSPaul Dagnelie } 377eb633035STom Caputi if (origin->ds_dir->dd_crypto_obj != 0 && 378eb633035STom Caputi (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)) { 379*a60ca23dSTom Caputi dsl_dataset_rele(origin, FTAG); 380*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 381eb633035STom Caputi return (SET_ERROR(EINVAL)); 382eb633035STom Caputi } 383*a60ca23dSTom Caputi dsl_dataset_rele(origin, FTAG); 3840fa1b3ccSPaul Dagnelie } 385*a60ca23dSTom Caputi dsl_dataset_rele(ds, FTAG); 3860fa1b3ccSPaul Dagnelie error = 0; 3870fa1b3ccSPaul Dagnelie } 3880fa1b3ccSPaul Dagnelie return (error); 3890fa1b3ccSPaul Dagnelie } 3900fa1b3ccSPaul Dagnelie 3910fa1b3ccSPaul Dagnelie static void 3920fa1b3ccSPaul Dagnelie dmu_recv_begin_sync(void *arg, dmu_tx_t *tx) 3930fa1b3ccSPaul Dagnelie { 3940fa1b3ccSPaul Dagnelie dmu_recv_begin_arg_t *drba = arg; 3950fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 3960fa1b3ccSPaul Dagnelie objset_t *mos = dp->dp_meta_objset; 3970fa1b3ccSPaul Dagnelie struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 3980fa1b3ccSPaul Dagnelie const char *tofs = drba->drba_cookie->drc_tofs; 399eb633035STom Caputi uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 4000fa1b3ccSPaul Dagnelie dsl_dataset_t *ds, *newds; 401eb633035STom Caputi objset_t *os; 4020fa1b3ccSPaul Dagnelie uint64_t dsobj; 403eb633035STom Caputi ds_hold_flags_t dsflags = 0; 4040fa1b3ccSPaul Dagnelie int error; 4050fa1b3ccSPaul Dagnelie uint64_t crflags = 0; 406eb633035STom Caputi dsl_crypto_params_t dummy_dcp = { 0 }; 407eb633035STom Caputi dsl_crypto_params_t *dcp = drba->drba_dcp; 4080fa1b3ccSPaul Dagnelie 4090fa1b3ccSPaul Dagnelie if (drrb->drr_flags & DRR_FLAG_CI_DATA) 4100fa1b3ccSPaul Dagnelie crflags |= DS_FLAG_CI_DATASET; 411eb633035STom Caputi if ((featureflags & DMU_BACKUP_FEATURE_RAW) == 0) 412eb633035STom Caputi dsflags |= DS_HOLD_FLAG_DECRYPT; 413eb633035STom Caputi 414eb633035STom Caputi /* 415eb633035STom Caputi * Raw, non-incremental recvs always use a dummy dcp with 416eb633035STom Caputi * the raw cmd set. Raw incremental recvs do not use a dcp 417eb633035STom Caputi * since the encryption parameters are already set in stone. 418eb633035STom Caputi */ 419eb633035STom Caputi if (dcp == NULL && drba->drba_cookie->drc_fromsnapobj == 0 && 420eb633035STom Caputi drba->drba_origin == NULL) { 421eb633035STom Caputi ASSERT3P(dcp, ==, NULL); 422eb633035STom Caputi dcp = &dummy_dcp; 4230fa1b3ccSPaul Dagnelie 424eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) 425eb633035STom Caputi dcp->cp_cmd = DCP_CMD_RAW_RECV; 426eb633035STom Caputi } 427eb633035STom Caputi 428eb633035STom Caputi error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); 4290fa1b3ccSPaul Dagnelie if (error == 0) { 4300fa1b3ccSPaul Dagnelie /* create temporary clone */ 4310fa1b3ccSPaul Dagnelie dsl_dataset_t *snap = NULL; 432eb633035STom Caputi 433eb633035STom Caputi if (drba->drba_cookie->drc_fromsnapobj != 0) { 4340fa1b3ccSPaul Dagnelie VERIFY0(dsl_dataset_hold_obj(dp, 435eb633035STom Caputi drba->drba_cookie->drc_fromsnapobj, FTAG, &snap)); 436eb633035STom Caputi ASSERT3P(dcp, ==, NULL); 4370fa1b3ccSPaul Dagnelie } 438eb633035STom Caputi 4390fa1b3ccSPaul Dagnelie dsobj = dsl_dataset_create_sync(ds->ds_dir, recv_clone_name, 440eb633035STom Caputi snap, crflags, drba->drba_cred, dcp, tx); 441eb633035STom Caputi if (drba->drba_cookie->drc_fromsnapobj != 0) 4420fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 443eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 4440fa1b3ccSPaul Dagnelie } else { 4450fa1b3ccSPaul Dagnelie dsl_dir_t *dd; 4460fa1b3ccSPaul Dagnelie const char *tail; 4470fa1b3ccSPaul Dagnelie dsl_dataset_t *origin = NULL; 4480fa1b3ccSPaul Dagnelie 4490fa1b3ccSPaul Dagnelie VERIFY0(dsl_dir_hold(dp, tofs, FTAG, &dd, &tail)); 4500fa1b3ccSPaul Dagnelie 4510fa1b3ccSPaul Dagnelie if (drba->drba_origin != NULL) { 4520fa1b3ccSPaul Dagnelie VERIFY0(dsl_dataset_hold(dp, drba->drba_origin, 4530fa1b3ccSPaul Dagnelie FTAG, &origin)); 454eb633035STom Caputi ASSERT3P(dcp, ==, NULL); 4550fa1b3ccSPaul Dagnelie } 4560fa1b3ccSPaul Dagnelie 4570fa1b3ccSPaul Dagnelie /* Create new dataset. */ 458eb633035STom Caputi dsobj = dsl_dataset_create_sync(dd, strrchr(tofs, '/') + 1, 459eb633035STom Caputi origin, crflags, drba->drba_cred, dcp, tx); 4600fa1b3ccSPaul Dagnelie if (origin != NULL) 4610fa1b3ccSPaul Dagnelie dsl_dataset_rele(origin, FTAG); 4620fa1b3ccSPaul Dagnelie dsl_dir_rele(dd, FTAG); 4630fa1b3ccSPaul Dagnelie drba->drba_cookie->drc_newfs = B_TRUE; 4640fa1b3ccSPaul Dagnelie } 465eb633035STom Caputi 466eb633035STom Caputi VERIFY0(dsl_dataset_own_obj(dp, dsobj, dsflags, dmu_recv_tag, &newds)); 467eb633035STom Caputi VERIFY0(dmu_objset_from_ds(newds, &os)); 4680fa1b3ccSPaul Dagnelie 4690fa1b3ccSPaul Dagnelie if (drba->drba_cookie->drc_resumable) { 4700fa1b3ccSPaul Dagnelie dsl_dataset_zapify(newds, tx); 4710fa1b3ccSPaul Dagnelie if (drrb->drr_fromguid != 0) { 4720fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_FROMGUID, 4730fa1b3ccSPaul Dagnelie 8, 1, &drrb->drr_fromguid, tx)); 4740fa1b3ccSPaul Dagnelie } 4750fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TOGUID, 4760fa1b3ccSPaul Dagnelie 8, 1, &drrb->drr_toguid, tx)); 4770fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TONAME, 4780fa1b3ccSPaul Dagnelie 1, strlen(drrb->drr_toname) + 1, drrb->drr_toname, tx)); 4790fa1b3ccSPaul Dagnelie uint64_t one = 1; 4800fa1b3ccSPaul Dagnelie uint64_t zero = 0; 4810fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OBJECT, 4820fa1b3ccSPaul Dagnelie 8, 1, &one, tx)); 4830fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OFFSET, 4840fa1b3ccSPaul Dagnelie 8, 1, &zero, tx)); 4850fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_BYTES, 4860fa1b3ccSPaul Dagnelie 8, 1, &zero, tx)); 487eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) { 4880fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_LARGEBLOCK, 4890fa1b3ccSPaul Dagnelie 8, 1, &one, tx)); 4900fa1b3ccSPaul Dagnelie } 491eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) { 4920fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_EMBEDOK, 4930fa1b3ccSPaul Dagnelie 8, 1, &one, tx)); 4940fa1b3ccSPaul Dagnelie } 495eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_COMPRESSED) { 4960fa1b3ccSPaul Dagnelie VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_COMPRESSOK, 4970fa1b3ccSPaul Dagnelie 8, 1, &one, tx)); 4980fa1b3ccSPaul Dagnelie } 499eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) { 500eb633035STom Caputi VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_RAWOK, 501eb633035STom Caputi 8, 1, &one, tx)); 502eb633035STom Caputi } 503eb633035STom Caputi } 504eb633035STom Caputi 505eb633035STom Caputi /* 506eb633035STom Caputi * Usually the os->os_encrypted value is tied to the presence of a 507eb633035STom Caputi * DSL Crypto Key object in the dd. However, that will not be received 508eb633035STom Caputi * until dmu_recv_stream(), so we set the value manually for now. 509eb633035STom Caputi */ 510eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) { 511eb633035STom Caputi os->os_encrypted = B_TRUE; 512eb633035STom Caputi drba->drba_cookie->drc_raw = B_TRUE; 5130fa1b3ccSPaul Dagnelie } 5140fa1b3ccSPaul Dagnelie 5150fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(newds->ds_dbuf, tx); 5160fa1b3ccSPaul Dagnelie dsl_dataset_phys(newds)->ds_flags |= DS_FLAG_INCONSISTENT; 5170fa1b3ccSPaul Dagnelie 5180fa1b3ccSPaul Dagnelie /* 519eb633035STom Caputi * If we actually created a non-clone, we need to create the objset 520eb633035STom Caputi * in our new dataset. If this is a raw send we postpone this until 521eb633035STom Caputi * dmu_recv_stream() so that we can allocate the metadnode with the 522eb633035STom Caputi * properties from the DRR_BEGIN payload. 5230fa1b3ccSPaul Dagnelie */ 5240fa1b3ccSPaul Dagnelie rrw_enter(&newds->ds_bp_rwlock, RW_READER, FTAG); 525eb633035STom Caputi if (BP_IS_HOLE(dsl_dataset_get_blkptr(newds)) && 526eb633035STom Caputi (featureflags & DMU_BACKUP_FEATURE_RAW) == 0) { 5270fa1b3ccSPaul Dagnelie (void) dmu_objset_create_impl(dp->dp_spa, 5280fa1b3ccSPaul Dagnelie newds, dsl_dataset_get_blkptr(newds), drrb->drr_type, tx); 5290fa1b3ccSPaul Dagnelie } 5300fa1b3ccSPaul Dagnelie rrw_exit(&newds->ds_bp_rwlock, FTAG); 5310fa1b3ccSPaul Dagnelie 5320fa1b3ccSPaul Dagnelie drba->drba_cookie->drc_ds = newds; 5330fa1b3ccSPaul Dagnelie 5340fa1b3ccSPaul Dagnelie spa_history_log_internal_ds(newds, "receive", tx, ""); 5350fa1b3ccSPaul Dagnelie } 5360fa1b3ccSPaul Dagnelie 5370fa1b3ccSPaul Dagnelie static int 5380fa1b3ccSPaul Dagnelie dmu_recv_resume_begin_check(void *arg, dmu_tx_t *tx) 5390fa1b3ccSPaul Dagnelie { 5400fa1b3ccSPaul Dagnelie dmu_recv_begin_arg_t *drba = arg; 5410fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 5420fa1b3ccSPaul Dagnelie struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 5430fa1b3ccSPaul Dagnelie int error; 544eb633035STom Caputi ds_hold_flags_t dsflags = 0; 5450fa1b3ccSPaul Dagnelie uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 5460fa1b3ccSPaul Dagnelie dsl_dataset_t *ds; 5470fa1b3ccSPaul Dagnelie const char *tofs = drba->drba_cookie->drc_tofs; 5480fa1b3ccSPaul Dagnelie 5490fa1b3ccSPaul Dagnelie /* 6 extra bytes for /%recv */ 5500fa1b3ccSPaul Dagnelie char recvname[ZFS_MAX_DATASET_NAME_LEN + 6]; 5510fa1b3ccSPaul Dagnelie 5520fa1b3ccSPaul Dagnelie /* already checked */ 5530fa1b3ccSPaul Dagnelie ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); 5540fa1b3ccSPaul Dagnelie ASSERT(featureflags & DMU_BACKUP_FEATURE_RESUMING); 5550fa1b3ccSPaul Dagnelie 5560fa1b3ccSPaul Dagnelie if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == 5570fa1b3ccSPaul Dagnelie DMU_COMPOUNDSTREAM || 5580fa1b3ccSPaul Dagnelie drrb->drr_type >= DMU_OST_NUMTYPES) 5590fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 5600fa1b3ccSPaul Dagnelie 5610fa1b3ccSPaul Dagnelie /* Verify pool version supports SA if SA_SPILL feature set */ 5620fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && 5630fa1b3ccSPaul Dagnelie spa_version(dp->dp_spa) < SPA_VERSION_SA) 5640fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 5650fa1b3ccSPaul Dagnelie 5660fa1b3ccSPaul Dagnelie /* 5670fa1b3ccSPaul Dagnelie * The receiving code doesn't know how to translate a WRITE_EMBEDDED 5680fa1b3ccSPaul Dagnelie * record to a plain WRITE record, so the pool must have the 5690fa1b3ccSPaul Dagnelie * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED 5700fa1b3ccSPaul Dagnelie * records. Same with WRITE_EMBEDDED records that use LZ4 compression. 5710fa1b3ccSPaul Dagnelie */ 5720fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && 5730fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) 5740fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 5750fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LZ4) && 5760fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS)) 5770fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 5780fa1b3ccSPaul Dagnelie 5790fa1b3ccSPaul Dagnelie /* 5800fa1b3ccSPaul Dagnelie * The receiving code doesn't know how to translate large blocks 5810fa1b3ccSPaul Dagnelie * to smaller ones, so the pool must have the LARGE_BLOCKS 5820fa1b3ccSPaul Dagnelie * feature enabled if the stream has LARGE_BLOCKS. Same with 5830fa1b3ccSPaul Dagnelie * large dnodes. 5840fa1b3ccSPaul Dagnelie */ 5850fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && 5860fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_BLOCKS)) 5870fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 5880fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_LARGE_DNODE) && 5890fa1b3ccSPaul Dagnelie !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LARGE_DNODE)) 5900fa1b3ccSPaul Dagnelie return (SET_ERROR(ENOTSUP)); 5910fa1b3ccSPaul Dagnelie 5920fa1b3ccSPaul Dagnelie (void) snprintf(recvname, sizeof (recvname), "%s/%s", 5930fa1b3ccSPaul Dagnelie tofs, recv_clone_name); 5940fa1b3ccSPaul Dagnelie 595eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) { 596eb633035STom Caputi /* raw receives require spill block allocation flag */ 597eb633035STom Caputi if (!(drrb->drr_flags & DRR_FLAG_SPILL_BLOCK)) 598eb633035STom Caputi return (SET_ERROR(ZFS_ERR_SPILL_BLOCK_FLAG_MISSING)); 599eb633035STom Caputi } else { 600eb633035STom Caputi dsflags |= DS_HOLD_FLAG_DECRYPT; 601eb633035STom Caputi } 602eb633035STom Caputi 603eb633035STom Caputi if (dsl_dataset_hold_flags(dp, recvname, dsflags, FTAG, &ds) != 0) { 6040fa1b3ccSPaul Dagnelie /* %recv does not exist; continue in tofs */ 605eb633035STom Caputi error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); 6060fa1b3ccSPaul Dagnelie if (error != 0) 6070fa1b3ccSPaul Dagnelie return (error); 6080fa1b3ccSPaul Dagnelie } 6090fa1b3ccSPaul Dagnelie 6100fa1b3ccSPaul Dagnelie /* check that ds is marked inconsistent */ 6110fa1b3ccSPaul Dagnelie if (!DS_IS_INCONSISTENT(ds)) { 612eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6130fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 6140fa1b3ccSPaul Dagnelie } 6150fa1b3ccSPaul Dagnelie 6160fa1b3ccSPaul Dagnelie /* check that there is resuming data, and that the toguid matches */ 6170fa1b3ccSPaul Dagnelie if (!dsl_dataset_is_zapified(ds)) { 618eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6190fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 6200fa1b3ccSPaul Dagnelie } 6210fa1b3ccSPaul Dagnelie uint64_t val; 6220fa1b3ccSPaul Dagnelie error = zap_lookup(dp->dp_meta_objset, ds->ds_object, 6230fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_TOGUID, sizeof (val), 1, &val); 6240fa1b3ccSPaul Dagnelie if (error != 0 || drrb->drr_toguid != val) { 625eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6260fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 6270fa1b3ccSPaul Dagnelie } 6280fa1b3ccSPaul Dagnelie 6290fa1b3ccSPaul Dagnelie /* 6300fa1b3ccSPaul Dagnelie * Check if the receive is still running. If so, it will be owned. 6310fa1b3ccSPaul Dagnelie * Note that nothing else can own the dataset (e.g. after the receive 6320fa1b3ccSPaul Dagnelie * fails) because it will be marked inconsistent. 6330fa1b3ccSPaul Dagnelie */ 6340fa1b3ccSPaul Dagnelie if (dsl_dataset_has_owner(ds)) { 635eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6360fa1b3ccSPaul Dagnelie return (SET_ERROR(EBUSY)); 6370fa1b3ccSPaul Dagnelie } 6380fa1b3ccSPaul Dagnelie 6390fa1b3ccSPaul Dagnelie /* There should not be any snapshots of this fs yet. */ 6400fa1b3ccSPaul Dagnelie if (ds->ds_prev != NULL && ds->ds_prev->ds_dir == ds->ds_dir) { 641eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6420fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 6430fa1b3ccSPaul Dagnelie } 6440fa1b3ccSPaul Dagnelie 6450fa1b3ccSPaul Dagnelie /* 6460fa1b3ccSPaul Dagnelie * Note: resume point will be checked when we process the first WRITE 6470fa1b3ccSPaul Dagnelie * record. 6480fa1b3ccSPaul Dagnelie */ 6490fa1b3ccSPaul Dagnelie 6500fa1b3ccSPaul Dagnelie /* check that the origin matches */ 6510fa1b3ccSPaul Dagnelie val = 0; 6520fa1b3ccSPaul Dagnelie (void) zap_lookup(dp->dp_meta_objset, ds->ds_object, 6530fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_FROMGUID, sizeof (val), 1, &val); 6540fa1b3ccSPaul Dagnelie if (drrb->drr_fromguid != val) { 655eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6560fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 6570fa1b3ccSPaul Dagnelie } 6580fa1b3ccSPaul Dagnelie 659eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6600fa1b3ccSPaul Dagnelie return (0); 6610fa1b3ccSPaul Dagnelie } 6620fa1b3ccSPaul Dagnelie 6630fa1b3ccSPaul Dagnelie static void 6640fa1b3ccSPaul Dagnelie dmu_recv_resume_begin_sync(void *arg, dmu_tx_t *tx) 6650fa1b3ccSPaul Dagnelie { 6660fa1b3ccSPaul Dagnelie dmu_recv_begin_arg_t *drba = arg; 6670fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 6680fa1b3ccSPaul Dagnelie const char *tofs = drba->drba_cookie->drc_tofs; 669eb633035STom Caputi struct drr_begin *drrb = drba->drba_cookie->drc_drrb; 670eb633035STom Caputi uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); 6710fa1b3ccSPaul Dagnelie dsl_dataset_t *ds; 672eb633035STom Caputi objset_t *os; 673eb633035STom Caputi ds_hold_flags_t dsflags = 0; 6740fa1b3ccSPaul Dagnelie uint64_t dsobj; 6750fa1b3ccSPaul Dagnelie /* 6 extra bytes for /%recv */ 6760fa1b3ccSPaul Dagnelie char recvname[ZFS_MAX_DATASET_NAME_LEN + 6]; 6770fa1b3ccSPaul Dagnelie 6780fa1b3ccSPaul Dagnelie (void) snprintf(recvname, sizeof (recvname), "%s/%s", 6790fa1b3ccSPaul Dagnelie tofs, recv_clone_name); 6800fa1b3ccSPaul Dagnelie 681eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) { 682eb633035STom Caputi drba->drba_cookie->drc_raw = B_TRUE; 683eb633035STom Caputi } else { 684eb633035STom Caputi dsflags |= DS_HOLD_FLAG_DECRYPT; 685eb633035STom Caputi } 686eb633035STom Caputi 687eb633035STom Caputi if (dsl_dataset_hold_flags(dp, recvname, dsflags, FTAG, &ds) != 0) { 6880fa1b3ccSPaul Dagnelie /* %recv does not exist; continue in tofs */ 689eb633035STom Caputi VERIFY0(dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds)); 6900fa1b3ccSPaul Dagnelie drba->drba_cookie->drc_newfs = B_TRUE; 6910fa1b3ccSPaul Dagnelie } 6920fa1b3ccSPaul Dagnelie 6930fa1b3ccSPaul Dagnelie /* clear the inconsistent flag so that we can own it */ 6940fa1b3ccSPaul Dagnelie ASSERT(DS_IS_INCONSISTENT(ds)); 6950fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(ds->ds_dbuf, tx); 6960fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 6970fa1b3ccSPaul Dagnelie dsobj = ds->ds_object; 698eb633035STom Caputi dsl_dataset_rele_flags(ds, dsflags, FTAG); 6990fa1b3ccSPaul Dagnelie 700eb633035STom Caputi VERIFY0(dsl_dataset_own_obj(dp, dsobj, dsflags, dmu_recv_tag, &ds)); 701eb633035STom Caputi VERIFY0(dmu_objset_from_ds(ds, &os)); 7020fa1b3ccSPaul Dagnelie 7030fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(ds->ds_dbuf, tx); 7040fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds)->ds_flags |= DS_FLAG_INCONSISTENT; 7050fa1b3ccSPaul Dagnelie 7060fa1b3ccSPaul Dagnelie rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); 707eb633035STom Caputi ASSERT(!BP_IS_HOLE(dsl_dataset_get_blkptr(ds)) || 708eb633035STom Caputi drba->drba_cookie->drc_raw); 7090fa1b3ccSPaul Dagnelie rrw_exit(&ds->ds_bp_rwlock, FTAG); 7100fa1b3ccSPaul Dagnelie 7110fa1b3ccSPaul Dagnelie drba->drba_cookie->drc_ds = ds; 7120fa1b3ccSPaul Dagnelie 7130fa1b3ccSPaul Dagnelie spa_history_log_internal_ds(ds, "resume receive", tx, ""); 7140fa1b3ccSPaul Dagnelie } 7150fa1b3ccSPaul Dagnelie 7160fa1b3ccSPaul Dagnelie /* 7170fa1b3ccSPaul Dagnelie * NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin() 7180fa1b3ccSPaul Dagnelie * succeeds; otherwise we will leak the holds on the datasets. 7190fa1b3ccSPaul Dagnelie */ 7200fa1b3ccSPaul Dagnelie int 7210fa1b3ccSPaul Dagnelie dmu_recv_begin(char *tofs, char *tosnap, dmu_replay_record_t *drr_begin, 7220fa1b3ccSPaul Dagnelie boolean_t force, boolean_t resumable, char *origin, dmu_recv_cookie_t *drc) 7230fa1b3ccSPaul Dagnelie { 7240fa1b3ccSPaul Dagnelie dmu_recv_begin_arg_t drba = { 0 }; 7250fa1b3ccSPaul Dagnelie 7260fa1b3ccSPaul Dagnelie bzero(drc, sizeof (dmu_recv_cookie_t)); 7270fa1b3ccSPaul Dagnelie drc->drc_drr_begin = drr_begin; 7280fa1b3ccSPaul Dagnelie drc->drc_drrb = &drr_begin->drr_u.drr_begin; 7290fa1b3ccSPaul Dagnelie drc->drc_tosnap = tosnap; 7300fa1b3ccSPaul Dagnelie drc->drc_tofs = tofs; 7310fa1b3ccSPaul Dagnelie drc->drc_force = force; 7320fa1b3ccSPaul Dagnelie drc->drc_resumable = resumable; 7330fa1b3ccSPaul Dagnelie drc->drc_cred = CRED(); 7340fa1b3ccSPaul Dagnelie drc->drc_clone = (origin != NULL); 7350fa1b3ccSPaul Dagnelie 7360fa1b3ccSPaul Dagnelie if (drc->drc_drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { 7370fa1b3ccSPaul Dagnelie drc->drc_byteswap = B_TRUE; 7380fa1b3ccSPaul Dagnelie (void) fletcher_4_incremental_byteswap(drr_begin, 7390fa1b3ccSPaul Dagnelie sizeof (dmu_replay_record_t), &drc->drc_cksum); 7400fa1b3ccSPaul Dagnelie byteswap_record(drr_begin); 7410fa1b3ccSPaul Dagnelie } else if (drc->drc_drrb->drr_magic == DMU_BACKUP_MAGIC) { 7420fa1b3ccSPaul Dagnelie (void) fletcher_4_incremental_native(drr_begin, 7430fa1b3ccSPaul Dagnelie sizeof (dmu_replay_record_t), &drc->drc_cksum); 7440fa1b3ccSPaul Dagnelie } else { 7450fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 7460fa1b3ccSPaul Dagnelie } 7470fa1b3ccSPaul Dagnelie 748eb633035STom Caputi if (drc->drc_drrb->drr_flags & DRR_FLAG_SPILL_BLOCK) 749eb633035STom Caputi drc->drc_spill = B_TRUE; 750eb633035STom Caputi 7510fa1b3ccSPaul Dagnelie drba.drba_origin = origin; 7520fa1b3ccSPaul Dagnelie drba.drba_cookie = drc; 7530fa1b3ccSPaul Dagnelie drba.drba_cred = CRED(); 7540fa1b3ccSPaul Dagnelie 7550fa1b3ccSPaul Dagnelie if (DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo) & 7560fa1b3ccSPaul Dagnelie DMU_BACKUP_FEATURE_RESUMING) { 7570fa1b3ccSPaul Dagnelie return (dsl_sync_task(tofs, 7580fa1b3ccSPaul Dagnelie dmu_recv_resume_begin_check, dmu_recv_resume_begin_sync, 7590fa1b3ccSPaul Dagnelie &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 7600fa1b3ccSPaul Dagnelie } else { 7610fa1b3ccSPaul Dagnelie return (dsl_sync_task(tofs, 7620fa1b3ccSPaul Dagnelie dmu_recv_begin_check, dmu_recv_begin_sync, 7630fa1b3ccSPaul Dagnelie &drba, 5, ZFS_SPACE_CHECK_NORMAL)); 7640fa1b3ccSPaul Dagnelie } 7650fa1b3ccSPaul Dagnelie } 7660fa1b3ccSPaul Dagnelie 7670fa1b3ccSPaul Dagnelie struct receive_record_arg { 7680fa1b3ccSPaul Dagnelie dmu_replay_record_t header; 7690fa1b3ccSPaul Dagnelie void *payload; /* Pointer to a buffer containing the payload */ 7700fa1b3ccSPaul Dagnelie /* 7710fa1b3ccSPaul Dagnelie * If the record is a write, pointer to the arc_buf_t containing the 7720fa1b3ccSPaul Dagnelie * payload. 7730fa1b3ccSPaul Dagnelie */ 774eb633035STom Caputi arc_buf_t *arc_buf; 7750fa1b3ccSPaul Dagnelie int payload_size; 7760fa1b3ccSPaul Dagnelie uint64_t bytes_read; /* bytes read from stream when record created */ 7770fa1b3ccSPaul Dagnelie boolean_t eos_marker; /* Marks the end of the stream */ 7780fa1b3ccSPaul Dagnelie bqueue_node_t node; 7790fa1b3ccSPaul Dagnelie }; 7800fa1b3ccSPaul Dagnelie 7810fa1b3ccSPaul Dagnelie struct receive_writer_arg { 7820fa1b3ccSPaul Dagnelie objset_t *os; 7830fa1b3ccSPaul Dagnelie boolean_t byteswap; 7840fa1b3ccSPaul Dagnelie bqueue_t q; 7850fa1b3ccSPaul Dagnelie 7860fa1b3ccSPaul Dagnelie /* 7870fa1b3ccSPaul Dagnelie * These three args are used to signal to the main thread that we're 7880fa1b3ccSPaul Dagnelie * done. 7890fa1b3ccSPaul Dagnelie */ 7900fa1b3ccSPaul Dagnelie kmutex_t mutex; 7910fa1b3ccSPaul Dagnelie kcondvar_t cv; 7920fa1b3ccSPaul Dagnelie boolean_t done; 7930fa1b3ccSPaul Dagnelie 7940fa1b3ccSPaul Dagnelie int err; 7950fa1b3ccSPaul Dagnelie /* A map from guid to dataset to help handle dedup'd streams. */ 7960fa1b3ccSPaul Dagnelie avl_tree_t *guid_to_ds_map; 7970fa1b3ccSPaul Dagnelie boolean_t resumable; 798eb633035STom Caputi boolean_t raw; /* DMU_BACKUP_FEATURE_RAW set */ 799eb633035STom Caputi boolean_t spill; /* DRR_FLAG_SPILL_BLOCK set */ 8000fa1b3ccSPaul Dagnelie uint64_t last_object; 8010fa1b3ccSPaul Dagnelie uint64_t last_offset; 8020fa1b3ccSPaul Dagnelie uint64_t max_object; /* highest object ID referenced in stream */ 8030fa1b3ccSPaul Dagnelie uint64_t bytes_read; /* bytes read when current record created */ 804eb633035STom Caputi 805eb633035STom Caputi /* Encryption parameters for the last received DRR_OBJECT_RANGE */ 806eb633035STom Caputi boolean_t or_crypt_params_present; 807eb633035STom Caputi uint64_t or_firstobj; 808eb633035STom Caputi uint64_t or_numslots; 809eb633035STom Caputi uint8_t or_salt[ZIO_DATA_SALT_LEN]; 810eb633035STom Caputi uint8_t or_iv[ZIO_DATA_IV_LEN]; 811eb633035STom Caputi uint8_t or_mac[ZIO_DATA_MAC_LEN]; 812eb633035STom Caputi boolean_t or_byteorder; 8130fa1b3ccSPaul Dagnelie }; 8140fa1b3ccSPaul Dagnelie 8150fa1b3ccSPaul Dagnelie struct objlist { 8160fa1b3ccSPaul Dagnelie list_t list; /* List of struct receive_objnode. */ 8170fa1b3ccSPaul Dagnelie /* 8180fa1b3ccSPaul Dagnelie * Last object looked up. Used to assert that objects are being looked 8190fa1b3ccSPaul Dagnelie * up in ascending order. 8200fa1b3ccSPaul Dagnelie */ 8210fa1b3ccSPaul Dagnelie uint64_t last_lookup; 8220fa1b3ccSPaul Dagnelie }; 8230fa1b3ccSPaul Dagnelie 8240fa1b3ccSPaul Dagnelie struct receive_objnode { 8250fa1b3ccSPaul Dagnelie list_node_t node; 8260fa1b3ccSPaul Dagnelie uint64_t object; 8270fa1b3ccSPaul Dagnelie }; 8280fa1b3ccSPaul Dagnelie 8290fa1b3ccSPaul Dagnelie struct receive_arg { 8300fa1b3ccSPaul Dagnelie objset_t *os; 8310fa1b3ccSPaul Dagnelie vnode_t *vp; /* The vnode to read the stream from */ 8320fa1b3ccSPaul Dagnelie uint64_t voff; /* The current offset in the stream */ 8330fa1b3ccSPaul Dagnelie uint64_t bytes_read; 8340fa1b3ccSPaul Dagnelie /* 8350fa1b3ccSPaul Dagnelie * A record that has had its payload read in, but hasn't yet been handed 8360fa1b3ccSPaul Dagnelie * off to the worker thread. 8370fa1b3ccSPaul Dagnelie */ 8380fa1b3ccSPaul Dagnelie struct receive_record_arg *rrd; 8390fa1b3ccSPaul Dagnelie /* A record that has had its header read in, but not its payload. */ 8400fa1b3ccSPaul Dagnelie struct receive_record_arg *next_rrd; 8410fa1b3ccSPaul Dagnelie zio_cksum_t cksum; 8420fa1b3ccSPaul Dagnelie zio_cksum_t prev_cksum; 8430fa1b3ccSPaul Dagnelie int err; 8440fa1b3ccSPaul Dagnelie boolean_t byteswap; 845eb633035STom Caputi boolean_t raw; 846eb633035STom Caputi uint64_t featureflags; 8470fa1b3ccSPaul Dagnelie /* Sorted list of objects not to issue prefetches for. */ 8480fa1b3ccSPaul Dagnelie struct objlist ignore_objlist; 8490fa1b3ccSPaul Dagnelie }; 8500fa1b3ccSPaul Dagnelie 8510fa1b3ccSPaul Dagnelie typedef struct guid_map_entry { 8520fa1b3ccSPaul Dagnelie uint64_t guid; 853eb633035STom Caputi boolean_t raw; 8540fa1b3ccSPaul Dagnelie dsl_dataset_t *gme_ds; 8550fa1b3ccSPaul Dagnelie avl_node_t avlnode; 8560fa1b3ccSPaul Dagnelie } guid_map_entry_t; 8570fa1b3ccSPaul Dagnelie 8580fa1b3ccSPaul Dagnelie static int 8590fa1b3ccSPaul Dagnelie guid_compare(const void *arg1, const void *arg2) 8600fa1b3ccSPaul Dagnelie { 8610fa1b3ccSPaul Dagnelie const guid_map_entry_t *gmep1 = arg1; 8620fa1b3ccSPaul Dagnelie const guid_map_entry_t *gmep2 = arg2; 8630fa1b3ccSPaul Dagnelie 8640fa1b3ccSPaul Dagnelie if (gmep1->guid < gmep2->guid) 8650fa1b3ccSPaul Dagnelie return (-1); 8660fa1b3ccSPaul Dagnelie else if (gmep1->guid > gmep2->guid) 8670fa1b3ccSPaul Dagnelie return (1); 8680fa1b3ccSPaul Dagnelie return (0); 8690fa1b3ccSPaul Dagnelie } 8700fa1b3ccSPaul Dagnelie 8710fa1b3ccSPaul Dagnelie static void 8720fa1b3ccSPaul Dagnelie free_guid_map_onexit(void *arg) 8730fa1b3ccSPaul Dagnelie { 8740fa1b3ccSPaul Dagnelie avl_tree_t *ca = arg; 8750fa1b3ccSPaul Dagnelie void *cookie = NULL; 8760fa1b3ccSPaul Dagnelie guid_map_entry_t *gmep; 8770fa1b3ccSPaul Dagnelie 8780fa1b3ccSPaul Dagnelie while ((gmep = avl_destroy_nodes(ca, &cookie)) != NULL) { 879eb633035STom Caputi ds_hold_flags_t dsflags = DS_HOLD_FLAG_DECRYPT; 880eb633035STom Caputi 881eb633035STom Caputi if (gmep->raw) { 882eb633035STom Caputi gmep->gme_ds->ds_objset->os_raw_receive = B_FALSE; 883eb633035STom Caputi dsflags &= ~DS_HOLD_FLAG_DECRYPT; 884eb633035STom Caputi } 885eb633035STom Caputi 886eb633035STom Caputi dsl_dataset_disown(gmep->gme_ds, dsflags, gmep); 8870fa1b3ccSPaul Dagnelie kmem_free(gmep, sizeof (guid_map_entry_t)); 8880fa1b3ccSPaul Dagnelie } 8890fa1b3ccSPaul Dagnelie avl_destroy(ca); 8900fa1b3ccSPaul Dagnelie kmem_free(ca, sizeof (avl_tree_t)); 8910fa1b3ccSPaul Dagnelie } 8920fa1b3ccSPaul Dagnelie 8930fa1b3ccSPaul Dagnelie static int 8940fa1b3ccSPaul Dagnelie receive_read(struct receive_arg *ra, int len, void *buf) 8950fa1b3ccSPaul Dagnelie { 8960fa1b3ccSPaul Dagnelie int done = 0; 8970fa1b3ccSPaul Dagnelie 8980fa1b3ccSPaul Dagnelie /* 8990fa1b3ccSPaul Dagnelie * The code doesn't rely on this (lengths being multiples of 8). See 9000fa1b3ccSPaul Dagnelie * comment in dump_bytes. 9010fa1b3ccSPaul Dagnelie */ 902eb633035STom Caputi ASSERT(len % 8 == 0 || 903eb633035STom Caputi (ra->featureflags & DMU_BACKUP_FEATURE_RAW) != 0); 9040fa1b3ccSPaul Dagnelie 9050fa1b3ccSPaul Dagnelie while (done < len) { 9060fa1b3ccSPaul Dagnelie ssize_t resid; 9070fa1b3ccSPaul Dagnelie 9080fa1b3ccSPaul Dagnelie ra->err = vn_rdwr(UIO_READ, ra->vp, 9090fa1b3ccSPaul Dagnelie (char *)buf + done, len - done, 9100fa1b3ccSPaul Dagnelie ra->voff, UIO_SYSSPACE, FAPPEND, 9110fa1b3ccSPaul Dagnelie RLIM64_INFINITY, CRED(), &resid); 9120fa1b3ccSPaul Dagnelie 9130fa1b3ccSPaul Dagnelie if (resid == len - done) { 9140fa1b3ccSPaul Dagnelie /* 9150fa1b3ccSPaul Dagnelie * Note: ECKSUM indicates that the receive 9160fa1b3ccSPaul Dagnelie * was interrupted and can potentially be resumed. 9170fa1b3ccSPaul Dagnelie */ 9180fa1b3ccSPaul Dagnelie ra->err = SET_ERROR(ECKSUM); 9190fa1b3ccSPaul Dagnelie } 9200fa1b3ccSPaul Dagnelie ra->voff += len - done - resid; 9210fa1b3ccSPaul Dagnelie done = len - resid; 9220fa1b3ccSPaul Dagnelie if (ra->err != 0) 9230fa1b3ccSPaul Dagnelie return (ra->err); 9240fa1b3ccSPaul Dagnelie } 9250fa1b3ccSPaul Dagnelie 9260fa1b3ccSPaul Dagnelie ra->bytes_read += len; 9270fa1b3ccSPaul Dagnelie 9280fa1b3ccSPaul Dagnelie ASSERT3U(done, ==, len); 9290fa1b3ccSPaul Dagnelie return (0); 9300fa1b3ccSPaul Dagnelie } 9310fa1b3ccSPaul Dagnelie 9320fa1b3ccSPaul Dagnelie static void 9330fa1b3ccSPaul Dagnelie byteswap_record(dmu_replay_record_t *drr) 9340fa1b3ccSPaul Dagnelie { 9350fa1b3ccSPaul Dagnelie #define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X)) 9360fa1b3ccSPaul Dagnelie #define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X)) 9370fa1b3ccSPaul Dagnelie drr->drr_type = BSWAP_32(drr->drr_type); 9380fa1b3ccSPaul Dagnelie drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen); 9390fa1b3ccSPaul Dagnelie 9400fa1b3ccSPaul Dagnelie switch (drr->drr_type) { 9410fa1b3ccSPaul Dagnelie case DRR_BEGIN: 9420fa1b3ccSPaul Dagnelie DO64(drr_begin.drr_magic); 9430fa1b3ccSPaul Dagnelie DO64(drr_begin.drr_versioninfo); 9440fa1b3ccSPaul Dagnelie DO64(drr_begin.drr_creation_time); 9450fa1b3ccSPaul Dagnelie DO32(drr_begin.drr_type); 9460fa1b3ccSPaul Dagnelie DO32(drr_begin.drr_flags); 9470fa1b3ccSPaul Dagnelie DO64(drr_begin.drr_toguid); 9480fa1b3ccSPaul Dagnelie DO64(drr_begin.drr_fromguid); 9490fa1b3ccSPaul Dagnelie break; 9500fa1b3ccSPaul Dagnelie case DRR_OBJECT: 9510fa1b3ccSPaul Dagnelie DO64(drr_object.drr_object); 9520fa1b3ccSPaul Dagnelie DO32(drr_object.drr_type); 9530fa1b3ccSPaul Dagnelie DO32(drr_object.drr_bonustype); 9540fa1b3ccSPaul Dagnelie DO32(drr_object.drr_blksz); 9550fa1b3ccSPaul Dagnelie DO32(drr_object.drr_bonuslen); 956eb633035STom Caputi DO32(drr_object.drr_raw_bonuslen); 9570fa1b3ccSPaul Dagnelie DO64(drr_object.drr_toguid); 958eb633035STom Caputi DO64(drr_object.drr_maxblkid); 9590fa1b3ccSPaul Dagnelie break; 9600fa1b3ccSPaul Dagnelie case DRR_FREEOBJECTS: 9610fa1b3ccSPaul Dagnelie DO64(drr_freeobjects.drr_firstobj); 9620fa1b3ccSPaul Dagnelie DO64(drr_freeobjects.drr_numobjs); 9630fa1b3ccSPaul Dagnelie DO64(drr_freeobjects.drr_toguid); 9640fa1b3ccSPaul Dagnelie break; 9650fa1b3ccSPaul Dagnelie case DRR_WRITE: 9660fa1b3ccSPaul Dagnelie DO64(drr_write.drr_object); 9670fa1b3ccSPaul Dagnelie DO32(drr_write.drr_type); 9680fa1b3ccSPaul Dagnelie DO64(drr_write.drr_offset); 9690fa1b3ccSPaul Dagnelie DO64(drr_write.drr_logical_size); 9700fa1b3ccSPaul Dagnelie DO64(drr_write.drr_toguid); 9710fa1b3ccSPaul Dagnelie ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write.drr_key.ddk_cksum); 9720fa1b3ccSPaul Dagnelie DO64(drr_write.drr_key.ddk_prop); 9730fa1b3ccSPaul Dagnelie DO64(drr_write.drr_compressed_size); 9740fa1b3ccSPaul Dagnelie break; 9750fa1b3ccSPaul Dagnelie case DRR_WRITE_BYREF: 9760fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_object); 9770fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_offset); 9780fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_length); 9790fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_toguid); 9800fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_refguid); 9810fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_refobject); 9820fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_refoffset); 9830fa1b3ccSPaul Dagnelie ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write_byref. 9840fa1b3ccSPaul Dagnelie drr_key.ddk_cksum); 9850fa1b3ccSPaul Dagnelie DO64(drr_write_byref.drr_key.ddk_prop); 9860fa1b3ccSPaul Dagnelie break; 9870fa1b3ccSPaul Dagnelie case DRR_WRITE_EMBEDDED: 9880fa1b3ccSPaul Dagnelie DO64(drr_write_embedded.drr_object); 9890fa1b3ccSPaul Dagnelie DO64(drr_write_embedded.drr_offset); 9900fa1b3ccSPaul Dagnelie DO64(drr_write_embedded.drr_length); 9910fa1b3ccSPaul Dagnelie DO64(drr_write_embedded.drr_toguid); 9920fa1b3ccSPaul Dagnelie DO32(drr_write_embedded.drr_lsize); 9930fa1b3ccSPaul Dagnelie DO32(drr_write_embedded.drr_psize); 9940fa1b3ccSPaul Dagnelie break; 9950fa1b3ccSPaul Dagnelie case DRR_FREE: 9960fa1b3ccSPaul Dagnelie DO64(drr_free.drr_object); 9970fa1b3ccSPaul Dagnelie DO64(drr_free.drr_offset); 9980fa1b3ccSPaul Dagnelie DO64(drr_free.drr_length); 9990fa1b3ccSPaul Dagnelie DO64(drr_free.drr_toguid); 10000fa1b3ccSPaul Dagnelie break; 10010fa1b3ccSPaul Dagnelie case DRR_SPILL: 10020fa1b3ccSPaul Dagnelie DO64(drr_spill.drr_object); 10030fa1b3ccSPaul Dagnelie DO64(drr_spill.drr_length); 10040fa1b3ccSPaul Dagnelie DO64(drr_spill.drr_toguid); 1005eb633035STom Caputi DO64(drr_spill.drr_compressed_size); 1006eb633035STom Caputi DO32(drr_spill.drr_type); 1007eb633035STom Caputi break; 1008eb633035STom Caputi case DRR_OBJECT_RANGE: 1009eb633035STom Caputi DO64(drr_object_range.drr_firstobj); 1010eb633035STom Caputi DO64(drr_object_range.drr_numslots); 1011eb633035STom Caputi DO64(drr_object_range.drr_toguid); 10120fa1b3ccSPaul Dagnelie break; 10130fa1b3ccSPaul Dagnelie case DRR_END: 10140fa1b3ccSPaul Dagnelie DO64(drr_end.drr_toguid); 10150fa1b3ccSPaul Dagnelie ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_end.drr_checksum); 10160fa1b3ccSPaul Dagnelie break; 10170fa1b3ccSPaul Dagnelie } 10180fa1b3ccSPaul Dagnelie 10190fa1b3ccSPaul Dagnelie if (drr->drr_type != DRR_BEGIN) { 10200fa1b3ccSPaul Dagnelie ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_checksum.drr_checksum); 10210fa1b3ccSPaul Dagnelie } 10220fa1b3ccSPaul Dagnelie 10230fa1b3ccSPaul Dagnelie #undef DO64 10240fa1b3ccSPaul Dagnelie #undef DO32 10250fa1b3ccSPaul Dagnelie } 10260fa1b3ccSPaul Dagnelie 10270fa1b3ccSPaul Dagnelie static inline uint8_t 10280fa1b3ccSPaul Dagnelie deduce_nblkptr(dmu_object_type_t bonus_type, uint64_t bonus_size) 10290fa1b3ccSPaul Dagnelie { 10300fa1b3ccSPaul Dagnelie if (bonus_type == DMU_OT_SA) { 10310fa1b3ccSPaul Dagnelie return (1); 10320fa1b3ccSPaul Dagnelie } else { 10330fa1b3ccSPaul Dagnelie return (1 + 10340fa1b3ccSPaul Dagnelie ((DN_OLD_MAX_BONUSLEN - 10350fa1b3ccSPaul Dagnelie MIN(DN_OLD_MAX_BONUSLEN, bonus_size)) >> SPA_BLKPTRSHIFT)); 10360fa1b3ccSPaul Dagnelie } 10370fa1b3ccSPaul Dagnelie } 10380fa1b3ccSPaul Dagnelie 10390fa1b3ccSPaul Dagnelie static void 10400fa1b3ccSPaul Dagnelie save_resume_state(struct receive_writer_arg *rwa, 10410fa1b3ccSPaul Dagnelie uint64_t object, uint64_t offset, dmu_tx_t *tx) 10420fa1b3ccSPaul Dagnelie { 10430fa1b3ccSPaul Dagnelie int txgoff = dmu_tx_get_txg(tx) & TXG_MASK; 10440fa1b3ccSPaul Dagnelie 10450fa1b3ccSPaul Dagnelie if (!rwa->resumable) 10460fa1b3ccSPaul Dagnelie return; 10470fa1b3ccSPaul Dagnelie 10480fa1b3ccSPaul Dagnelie /* 10490fa1b3ccSPaul Dagnelie * We use ds_resume_bytes[] != 0 to indicate that we need to 10500fa1b3ccSPaul Dagnelie * update this on disk, so it must not be 0. 10510fa1b3ccSPaul Dagnelie */ 10520fa1b3ccSPaul Dagnelie ASSERT(rwa->bytes_read != 0); 10530fa1b3ccSPaul Dagnelie 10540fa1b3ccSPaul Dagnelie /* 10550fa1b3ccSPaul Dagnelie * We only resume from write records, which have a valid 10560fa1b3ccSPaul Dagnelie * (non-meta-dnode) object number. 10570fa1b3ccSPaul Dagnelie */ 10580fa1b3ccSPaul Dagnelie ASSERT(object != 0); 10590fa1b3ccSPaul Dagnelie 10600fa1b3ccSPaul Dagnelie /* 10610fa1b3ccSPaul Dagnelie * For resuming to work correctly, we must receive records in order, 10620fa1b3ccSPaul Dagnelie * sorted by object,offset. This is checked by the callers, but 10630fa1b3ccSPaul Dagnelie * assert it here for good measure. 10640fa1b3ccSPaul Dagnelie */ 10650fa1b3ccSPaul Dagnelie ASSERT3U(object, >=, rwa->os->os_dsl_dataset->ds_resume_object[txgoff]); 10660fa1b3ccSPaul Dagnelie ASSERT(object != rwa->os->os_dsl_dataset->ds_resume_object[txgoff] || 10670fa1b3ccSPaul Dagnelie offset >= rwa->os->os_dsl_dataset->ds_resume_offset[txgoff]); 10680fa1b3ccSPaul Dagnelie ASSERT3U(rwa->bytes_read, >=, 10690fa1b3ccSPaul Dagnelie rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff]); 10700fa1b3ccSPaul Dagnelie 10710fa1b3ccSPaul Dagnelie rwa->os->os_dsl_dataset->ds_resume_object[txgoff] = object; 10720fa1b3ccSPaul Dagnelie rwa->os->os_dsl_dataset->ds_resume_offset[txgoff] = offset; 10730fa1b3ccSPaul Dagnelie rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff] = rwa->bytes_read; 10740fa1b3ccSPaul Dagnelie } 10750fa1b3ccSPaul Dagnelie 1076eb633035STom Caputi int receive_object_delay_frac = 0; 1077eb633035STom Caputi 10780fa1b3ccSPaul Dagnelie static int 10790fa1b3ccSPaul Dagnelie receive_object(struct receive_writer_arg *rwa, struct drr_object *drro, 10800fa1b3ccSPaul Dagnelie void *data) 10810fa1b3ccSPaul Dagnelie { 10820fa1b3ccSPaul Dagnelie dmu_object_info_t doi; 10830fa1b3ccSPaul Dagnelie dmu_tx_t *tx; 10840fa1b3ccSPaul Dagnelie uint64_t object; 10850fa1b3ccSPaul Dagnelie int err; 10860fa1b3ccSPaul Dagnelie uint8_t dn_slots = drro->drr_dn_slots != 0 ? 10870fa1b3ccSPaul Dagnelie drro->drr_dn_slots : DNODE_MIN_SLOTS; 10880fa1b3ccSPaul Dagnelie 1089eb633035STom Caputi if (receive_object_delay_frac != 0 && 1090eb633035STom Caputi spa_get_random(receive_object_delay_frac) == 0) 1091eb633035STom Caputi delay(1); 1092eb633035STom Caputi 10930fa1b3ccSPaul Dagnelie if (drro->drr_type == DMU_OT_NONE || 10940fa1b3ccSPaul Dagnelie !DMU_OT_IS_VALID(drro->drr_type) || 10950fa1b3ccSPaul Dagnelie !DMU_OT_IS_VALID(drro->drr_bonustype) || 10960fa1b3ccSPaul Dagnelie drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS || 10970fa1b3ccSPaul Dagnelie drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS || 10980fa1b3ccSPaul Dagnelie P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) || 10990fa1b3ccSPaul Dagnelie drro->drr_blksz < SPA_MINBLOCKSIZE || 11000fa1b3ccSPaul Dagnelie drro->drr_blksz > spa_maxblocksize(dmu_objset_spa(rwa->os)) || 11010fa1b3ccSPaul Dagnelie drro->drr_bonuslen > 11020fa1b3ccSPaul Dagnelie DN_BONUS_SIZE(spa_maxdnodesize(dmu_objset_spa(rwa->os))) || 11030fa1b3ccSPaul Dagnelie dn_slots > 11040fa1b3ccSPaul Dagnelie (spa_maxdnodesize(dmu_objset_spa(rwa->os)) >> DNODE_SHIFT)) { 11050fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 11060fa1b3ccSPaul Dagnelie } 11070fa1b3ccSPaul Dagnelie 1108eb633035STom Caputi if (rwa->raw) { 1109eb633035STom Caputi /* 1110eb633035STom Caputi * We should have received a DRR_OBJECT_RANGE record 1111eb633035STom Caputi * containing this block and stored it in rwa. 1112eb633035STom Caputi */ 1113eb633035STom Caputi if (drro->drr_object < rwa->or_firstobj || 1114eb633035STom Caputi drro->drr_object >= rwa->or_firstobj + rwa->or_numslots || 1115eb633035STom Caputi drro->drr_raw_bonuslen < drro->drr_bonuslen || 1116eb633035STom Caputi drro->drr_indblkshift > SPA_MAXBLOCKSHIFT || 1117eb633035STom Caputi drro->drr_nlevels > DN_MAX_LEVELS || 1118eb633035STom Caputi drro->drr_nblkptr > DN_MAX_NBLKPTR || 1119eb633035STom Caputi DN_SLOTS_TO_BONUSLEN(drro->drr_dn_slots) < 1120eb633035STom Caputi drro->drr_raw_bonuslen) 1121eb633035STom Caputi return (SET_ERROR(EINVAL)); 1122eb633035STom Caputi } else { 1123eb633035STom Caputi 1124eb633035STom Caputi /* 1125eb633035STom Caputi * The DRR_OBJECT_SPILL flag is valid when the DRR_BEGIN 1126eb633035STom Caputi * record indicates this by setting DRR_FLAG_SPILL_BLOCK. 1127eb633035STom Caputi */ 1128eb633035STom Caputi if (((drro->drr_flags & ~(DRR_OBJECT_SPILL))) || 1129eb633035STom Caputi (!rwa->spill && DRR_OBJECT_HAS_SPILL(drro->drr_flags))) { 1130eb633035STom Caputi return (SET_ERROR(EINVAL)); 1131eb633035STom Caputi } 1132eb633035STom Caputi 1133eb633035STom Caputi if (drro->drr_raw_bonuslen != 0 || drro->drr_nblkptr != 0 || 1134eb633035STom Caputi drro->drr_indblkshift != 0 || drro->drr_nlevels != 0) { 1135eb633035STom Caputi return (SET_ERROR(EINVAL)); 1136eb633035STom Caputi } 1137eb633035STom Caputi } 1138eb633035STom Caputi 11390fa1b3ccSPaul Dagnelie err = dmu_object_info(rwa->os, drro->drr_object, &doi); 11400fa1b3ccSPaul Dagnelie 11410fa1b3ccSPaul Dagnelie if (err != 0 && err != ENOENT && err != EEXIST) 11420fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 11430fa1b3ccSPaul Dagnelie 11440fa1b3ccSPaul Dagnelie if (drro->drr_object > rwa->max_object) 11450fa1b3ccSPaul Dagnelie rwa->max_object = drro->drr_object; 11460fa1b3ccSPaul Dagnelie 11470fa1b3ccSPaul Dagnelie /* 11480fa1b3ccSPaul Dagnelie * If we are losing blkptrs or changing the block size this must 11490fa1b3ccSPaul Dagnelie * be a new file instance. We must clear out the previous file 11500fa1b3ccSPaul Dagnelie * contents before we can change this type of metadata in the dnode. 1151eb633035STom Caputi * Raw receives will also check that the indirect structure of the 1152eb633035STom Caputi * dnode hasn't changed. 11530fa1b3ccSPaul Dagnelie */ 11540fa1b3ccSPaul Dagnelie if (err == 0) { 1155eb633035STom Caputi uint32_t indblksz = drro->drr_indblkshift ? 1156eb633035STom Caputi 1ULL << drro->drr_indblkshift : 0; 1157eb633035STom Caputi int nblkptr = deduce_nblkptr(drro->drr_bonustype, 1158eb633035STom Caputi drro->drr_bonuslen); 1159eb633035STom Caputi boolean_t did_free = B_FALSE; 11600fa1b3ccSPaul Dagnelie 11610fa1b3ccSPaul Dagnelie object = drro->drr_object; 11620fa1b3ccSPaul Dagnelie 1163eb633035STom Caputi /* nblkptr should be bounded by the bonus size and type */ 1164eb633035STom Caputi if (rwa->raw && nblkptr != drro->drr_nblkptr) 1165eb633035STom Caputi return (SET_ERROR(EINVAL)); 11660fa1b3ccSPaul Dagnelie 1167eb633035STom Caputi /* 1168eb633035STom Caputi * Check for indicators that the object was freed and 1169eb633035STom Caputi * reallocated. For all sends, these indicators are: 1170eb633035STom Caputi * - A changed block size 1171eb633035STom Caputi * - A smaller nblkptr 1172eb633035STom Caputi * - A changed dnode size 1173eb633035STom Caputi * For raw sends we also check a few other fields to 1174eb633035STom Caputi * ensure we are preserving the objset structure exactly 1175eb633035STom Caputi * as it was on the receive side: 1176eb633035STom Caputi * - A changed indirect block size 1177eb633035STom Caputi * - A smaller nlevels 1178eb633035STom Caputi */ 11790fa1b3ccSPaul Dagnelie if (drro->drr_blksz != doi.doi_data_block_size || 11800fa1b3ccSPaul Dagnelie nblkptr < doi.doi_nblkptr || 1181eb633035STom Caputi dn_slots != doi.doi_dnodesize >> DNODE_SHIFT || 1182eb633035STom Caputi (rwa->raw && 1183eb633035STom Caputi (indblksz != doi.doi_metadata_block_size || 1184eb633035STom Caputi drro->drr_nlevels < doi.doi_indirection))) { 1185eb633035STom Caputi err = dmu_free_long_range(rwa->os, 1186eb633035STom Caputi drro->drr_object, 0, DMU_OBJECT_END); 1187eb633035STom Caputi if (err != 0) 1188eb633035STom Caputi return (SET_ERROR(EINVAL)); 1189eb633035STom Caputi else 1190eb633035STom Caputi did_free = B_TRUE; 1191eb633035STom Caputi } 1192eb633035STom Caputi 1193eb633035STom Caputi /* 1194eb633035STom Caputi * The dmu does not currently support decreasing nlevels 1195eb633035STom Caputi * or changing the number of dnode slots on an object. For 1196eb633035STom Caputi * non-raw sends, this does not matter and the new object 1197eb633035STom Caputi * can just use the previous one's nlevels. For raw sends, 1198eb633035STom Caputi * however, the structure of the received dnode (including 1199eb633035STom Caputi * nlevels and dnode slots) must match that of the send 1200eb633035STom Caputi * side. Therefore, instead of using dmu_object_reclaim(), 1201eb633035STom Caputi * we must free the object completely and call 1202eb633035STom Caputi * dmu_object_claim_dnsize() instead. 1203eb633035STom Caputi */ 1204eb633035STom Caputi if ((rwa->raw && drro->drr_nlevels < doi.doi_indirection) || 12050fa1b3ccSPaul Dagnelie dn_slots != doi.doi_dnodesize >> DNODE_SHIFT) { 1206eb633035STom Caputi err = dmu_free_long_object(rwa->os, drro->drr_object); 1207eb633035STom Caputi if (err != 0) 1208eb633035STom Caputi return (SET_ERROR(EINVAL)); 1209eb633035STom Caputi 1210eb633035STom Caputi txg_wait_synced(dmu_objset_pool(rwa->os), 0); 1211eb633035STom Caputi object = DMU_NEW_OBJECT; 1212eb633035STom Caputi } 1213eb633035STom Caputi 1214eb633035STom Caputi /* 1215eb633035STom Caputi * For raw receives, free everything beyond the new incoming 1216eb633035STom Caputi * maxblkid. Normally this would be done with a DRR_FREE 1217eb633035STom Caputi * record that would come after this DRR_OBJECT record is 1218eb633035STom Caputi * processed. However, for raw receives we manually set the 1219eb633035STom Caputi * maxblkid from the drr_maxblkid and so we must first free 1220eb633035STom Caputi * everything above that blkid to ensure the DMU is always 1221eb633035STom Caputi * consistent with itself. We will never free the first block 1222eb633035STom Caputi * of the object here because a maxblkid of 0 could indicate 1223eb633035STom Caputi * an object with a single block or one with no blocks. This 1224eb633035STom Caputi * free may be skipped when dmu_free_long_range() was called 1225eb633035STom Caputi * above since it covers the entire object's contents. 1226eb633035STom Caputi */ 1227eb633035STom Caputi if (rwa->raw && object != DMU_NEW_OBJECT && !did_free) { 12280fa1b3ccSPaul Dagnelie err = dmu_free_long_range(rwa->os, drro->drr_object, 1229eb633035STom Caputi (drro->drr_maxblkid + 1) * doi.doi_data_block_size, 1230eb633035STom Caputi DMU_OBJECT_END); 12310fa1b3ccSPaul Dagnelie if (err != 0) 12320fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 12330fa1b3ccSPaul Dagnelie } 12340fa1b3ccSPaul Dagnelie } else if (err == EEXIST) { 12350fa1b3ccSPaul Dagnelie /* 12360fa1b3ccSPaul Dagnelie * The object requested is currently an interior slot of a 12370fa1b3ccSPaul Dagnelie * multi-slot dnode. This will be resolved when the next txg 12380fa1b3ccSPaul Dagnelie * is synced out, since the send stream will have told us 12390fa1b3ccSPaul Dagnelie * to free this slot when we freed the associated dnode 12400fa1b3ccSPaul Dagnelie * earlier in the stream. 12410fa1b3ccSPaul Dagnelie */ 12420fa1b3ccSPaul Dagnelie txg_wait_synced(dmu_objset_pool(rwa->os), 0); 1243eb633035STom Caputi if (dmu_object_info(rwa->os, drro->drr_object, NULL) != ENOENT) 1244eb633035STom Caputi return (SET_ERROR(EINVAL)); 1245eb633035STom Caputi 1246eb633035STom Caputi /* object was freed and we are about to allocate a new one */ 1247eb633035STom Caputi object = DMU_NEW_OBJECT; 12480fa1b3ccSPaul Dagnelie } else { 12490fa1b3ccSPaul Dagnelie /* object is free and we are about to allocate a new one */ 12500fa1b3ccSPaul Dagnelie object = DMU_NEW_OBJECT; 12510fa1b3ccSPaul Dagnelie } 12520fa1b3ccSPaul Dagnelie 12530fa1b3ccSPaul Dagnelie /* 12540fa1b3ccSPaul Dagnelie * If this is a multi-slot dnode there is a chance that this 12550fa1b3ccSPaul Dagnelie * object will expand into a slot that is already used by 12560fa1b3ccSPaul Dagnelie * another object from the previous snapshot. We must free 12570fa1b3ccSPaul Dagnelie * these objects before we attempt to allocate the new dnode. 12580fa1b3ccSPaul Dagnelie */ 12590fa1b3ccSPaul Dagnelie if (dn_slots > 1) { 12600fa1b3ccSPaul Dagnelie boolean_t need_sync = B_FALSE; 12610fa1b3ccSPaul Dagnelie 12620fa1b3ccSPaul Dagnelie for (uint64_t slot = drro->drr_object + 1; 12630fa1b3ccSPaul Dagnelie slot < drro->drr_object + dn_slots; 12640fa1b3ccSPaul Dagnelie slot++) { 12650fa1b3ccSPaul Dagnelie dmu_object_info_t slot_doi; 12660fa1b3ccSPaul Dagnelie 12670fa1b3ccSPaul Dagnelie err = dmu_object_info(rwa->os, slot, &slot_doi); 12680fa1b3ccSPaul Dagnelie if (err == ENOENT || err == EEXIST) 12690fa1b3ccSPaul Dagnelie continue; 12700fa1b3ccSPaul Dagnelie else if (err != 0) 12710fa1b3ccSPaul Dagnelie return (err); 12720fa1b3ccSPaul Dagnelie 12730fa1b3ccSPaul Dagnelie err = dmu_free_long_object(rwa->os, slot); 12740fa1b3ccSPaul Dagnelie 12750fa1b3ccSPaul Dagnelie if (err != 0) 12760fa1b3ccSPaul Dagnelie return (err); 12770fa1b3ccSPaul Dagnelie 12780fa1b3ccSPaul Dagnelie need_sync = B_TRUE; 12790fa1b3ccSPaul Dagnelie } 12800fa1b3ccSPaul Dagnelie 12810fa1b3ccSPaul Dagnelie if (need_sync) 12820fa1b3ccSPaul Dagnelie txg_wait_synced(dmu_objset_pool(rwa->os), 0); 12830fa1b3ccSPaul Dagnelie } 12840fa1b3ccSPaul Dagnelie 12850fa1b3ccSPaul Dagnelie tx = dmu_tx_create(rwa->os); 12860fa1b3ccSPaul Dagnelie dmu_tx_hold_bonus(tx, object); 1287eb633035STom Caputi dmu_tx_hold_write(tx, object, 0, 0); 12880fa1b3ccSPaul Dagnelie err = dmu_tx_assign(tx, TXG_WAIT); 12890fa1b3ccSPaul Dagnelie if (err != 0) { 12900fa1b3ccSPaul Dagnelie dmu_tx_abort(tx); 12910fa1b3ccSPaul Dagnelie return (err); 12920fa1b3ccSPaul Dagnelie } 12930fa1b3ccSPaul Dagnelie 12940fa1b3ccSPaul Dagnelie if (object == DMU_NEW_OBJECT) { 1295eb633035STom Caputi /* Currently free, wants to be allocated */ 12960fa1b3ccSPaul Dagnelie err = dmu_object_claim_dnsize(rwa->os, drro->drr_object, 12970fa1b3ccSPaul Dagnelie drro->drr_type, drro->drr_blksz, 12980fa1b3ccSPaul Dagnelie drro->drr_bonustype, drro->drr_bonuslen, 12990fa1b3ccSPaul Dagnelie dn_slots << DNODE_SHIFT, tx); 13000fa1b3ccSPaul Dagnelie } else if (drro->drr_type != doi.doi_type || 13010fa1b3ccSPaul Dagnelie drro->drr_blksz != doi.doi_data_block_size || 13020fa1b3ccSPaul Dagnelie drro->drr_bonustype != doi.doi_bonus_type || 1303eb633035STom Caputi drro->drr_bonuslen != doi.doi_bonus_size) { 1304eb633035STom Caputi /* Currently allocated, but with different properties */ 13050fa1b3ccSPaul Dagnelie err = dmu_object_reclaim_dnsize(rwa->os, drro->drr_object, 13060fa1b3ccSPaul Dagnelie drro->drr_type, drro->drr_blksz, 13070fa1b3ccSPaul Dagnelie drro->drr_bonustype, drro->drr_bonuslen, 1308eb633035STom Caputi dn_slots << DNODE_SHIFT, rwa->spill ? 1309eb633035STom Caputi DRR_OBJECT_HAS_SPILL(drro->drr_flags) : B_FALSE, tx); 1310eb633035STom Caputi } else if (rwa->spill && !DRR_OBJECT_HAS_SPILL(drro->drr_flags)) { 1311eb633035STom Caputi /* 1312eb633035STom Caputi * Currently allocated, the existing version of this object 1313eb633035STom Caputi * may reference a spill block that is no longer allocated 1314eb633035STom Caputi * at the source and needs to be freed. 1315eb633035STom Caputi */ 1316eb633035STom Caputi err = dmu_object_rm_spill(rwa->os, drro->drr_object, tx); 13170fa1b3ccSPaul Dagnelie } 1318eb633035STom Caputi 13190fa1b3ccSPaul Dagnelie if (err != 0) { 13200fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 13210fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 13220fa1b3ccSPaul Dagnelie } 13230fa1b3ccSPaul Dagnelie 1324eb633035STom Caputi if (rwa->or_crypt_params_present) { 1325eb633035STom Caputi /* 1326eb633035STom Caputi * Set the crypt params for the buffer associated with this 1327eb633035STom Caputi * range of dnodes. This causes the blkptr_t to have the 1328eb633035STom Caputi * same crypt params (byteorder, salt, iv, mac) as on the 1329eb633035STom Caputi * sending side. 1330eb633035STom Caputi * 1331eb633035STom Caputi * Since we are committing this tx now, it is possible for 1332eb633035STom Caputi * the dnode block to end up on-disk with the incorrect MAC, 1333eb633035STom Caputi * if subsequent objects in this block are received in a 1334eb633035STom Caputi * different txg. However, since the dataset is marked as 1335eb633035STom Caputi * inconsistent, no code paths will do a non-raw read (or 1336eb633035STom Caputi * decrypt the block / verify the MAC). The receive code and 1337eb633035STom Caputi * scrub code can safely do raw reads and verify the 1338eb633035STom Caputi * checksum. They don't need to verify the MAC. 1339eb633035STom Caputi */ 1340eb633035STom Caputi dmu_buf_t *db = NULL; 1341eb633035STom Caputi uint64_t offset = rwa->or_firstobj * DNODE_MIN_SIZE; 1342eb633035STom Caputi 1343eb633035STom Caputi err = dmu_buf_hold_by_dnode(DMU_META_DNODE(rwa->os), 1344eb633035STom Caputi offset, FTAG, &db, DMU_READ_PREFETCH | DMU_READ_NO_DECRYPT); 1345eb633035STom Caputi if (err != 0) { 1346eb633035STom Caputi dmu_tx_commit(tx); 1347eb633035STom Caputi return (SET_ERROR(EINVAL)); 1348eb633035STom Caputi } 1349eb633035STom Caputi 1350eb633035STom Caputi dmu_buf_set_crypt_params(db, rwa->or_byteorder, 1351eb633035STom Caputi rwa->or_salt, rwa->or_iv, rwa->or_mac, tx); 1352eb633035STom Caputi 1353eb633035STom Caputi dmu_buf_rele(db, FTAG); 1354eb633035STom Caputi 1355eb633035STom Caputi rwa->or_crypt_params_present = B_FALSE; 1356eb633035STom Caputi } 1357eb633035STom Caputi 13580fa1b3ccSPaul Dagnelie dmu_object_set_checksum(rwa->os, drro->drr_object, 13590fa1b3ccSPaul Dagnelie drro->drr_checksumtype, tx); 13600fa1b3ccSPaul Dagnelie dmu_object_set_compress(rwa->os, drro->drr_object, 13610fa1b3ccSPaul Dagnelie drro->drr_compress, tx); 13620fa1b3ccSPaul Dagnelie 1363eb633035STom Caputi /* handle more restrictive dnode structuring for raw recvs */ 1364eb633035STom Caputi if (rwa->raw) { 1365eb633035STom Caputi /* 1366eb633035STom Caputi * Set the indirect block size, block shift, nlevels. 1367eb633035STom Caputi * This will not fail because we ensured all of the 1368eb633035STom Caputi * blocks were freed earlier if this is a new object. 1369eb633035STom Caputi * For non-new objects block size and indirect block 1370eb633035STom Caputi * shift cannot change and nlevels can only increase. 1371eb633035STom Caputi */ 1372eb633035STom Caputi VERIFY0(dmu_object_set_blocksize(rwa->os, drro->drr_object, 1373eb633035STom Caputi drro->drr_blksz, drro->drr_indblkshift, tx)); 1374eb633035STom Caputi VERIFY0(dmu_object_set_nlevels(rwa->os, drro->drr_object, 1375eb633035STom Caputi drro->drr_nlevels, tx)); 1376eb633035STom Caputi 1377eb633035STom Caputi /* 1378eb633035STom Caputi * Set the maxblkid. This will always succeed because 1379eb633035STom Caputi * we freed all blocks beyond the new maxblkid above. 1380eb633035STom Caputi */ 1381eb633035STom Caputi VERIFY0(dmu_object_set_maxblkid(rwa->os, drro->drr_object, 1382eb633035STom Caputi drro->drr_maxblkid, tx)); 1383eb633035STom Caputi } 1384eb633035STom Caputi 13850fa1b3ccSPaul Dagnelie if (data != NULL) { 13860fa1b3ccSPaul Dagnelie dmu_buf_t *db; 1387eb633035STom Caputi dnode_t *dn; 1388eb633035STom Caputi uint32_t flags = DMU_READ_NO_PREFETCH; 1389eb633035STom Caputi 1390eb633035STom Caputi if (rwa->raw) 1391eb633035STom Caputi flags |= DMU_READ_NO_DECRYPT; 1392eb633035STom Caputi 1393eb633035STom Caputi VERIFY0(dnode_hold(rwa->os, drro->drr_object, FTAG, &dn)); 1394eb633035STom Caputi VERIFY0(dmu_bonus_hold_by_dnode(dn, FTAG, &db, flags)); 13950fa1b3ccSPaul Dagnelie 13960fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(db, tx); 13970fa1b3ccSPaul Dagnelie 13980fa1b3ccSPaul Dagnelie ASSERT3U(db->db_size, >=, drro->drr_bonuslen); 1399eb633035STom Caputi bcopy(data, db->db_data, DRR_OBJECT_PAYLOAD_SIZE(drro)); 1400eb633035STom Caputi 1401eb633035STom Caputi /* 1402eb633035STom Caputi * Raw bonus buffers have their byteorder determined by the 1403eb633035STom Caputi * DRR_OBJECT_RANGE record. 1404eb633035STom Caputi */ 1405eb633035STom Caputi if (rwa->byteswap && !rwa->raw) { 14060fa1b3ccSPaul Dagnelie dmu_object_byteswap_t byteswap = 14070fa1b3ccSPaul Dagnelie DMU_OT_BYTESWAP(drro->drr_bonustype); 14080fa1b3ccSPaul Dagnelie dmu_ot_byteswap[byteswap].ob_func(db->db_data, 1409eb633035STom Caputi DRR_OBJECT_PAYLOAD_SIZE(drro)); 14100fa1b3ccSPaul Dagnelie } 14110fa1b3ccSPaul Dagnelie dmu_buf_rele(db, FTAG); 1412eb633035STom Caputi dnode_rele(dn, FTAG); 14130fa1b3ccSPaul Dagnelie } 14140fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 14150fa1b3ccSPaul Dagnelie 14160fa1b3ccSPaul Dagnelie return (0); 14170fa1b3ccSPaul Dagnelie } 14180fa1b3ccSPaul Dagnelie 14190fa1b3ccSPaul Dagnelie /* ARGSUSED */ 14200fa1b3ccSPaul Dagnelie static int 14210fa1b3ccSPaul Dagnelie receive_freeobjects(struct receive_writer_arg *rwa, 14220fa1b3ccSPaul Dagnelie struct drr_freeobjects *drrfo) 14230fa1b3ccSPaul Dagnelie { 14240fa1b3ccSPaul Dagnelie uint64_t obj; 14250fa1b3ccSPaul Dagnelie int next_err = 0; 14260fa1b3ccSPaul Dagnelie 14270fa1b3ccSPaul Dagnelie if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj) 14280fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 14290fa1b3ccSPaul Dagnelie 14300fa1b3ccSPaul Dagnelie for (obj = drrfo->drr_firstobj == 0 ? 1 : drrfo->drr_firstobj; 14310fa1b3ccSPaul Dagnelie obj < drrfo->drr_firstobj + drrfo->drr_numobjs && next_err == 0; 14320fa1b3ccSPaul Dagnelie next_err = dmu_object_next(rwa->os, &obj, FALSE, 0)) { 1433eb633035STom Caputi dmu_object_info_t doi; 14340fa1b3ccSPaul Dagnelie int err; 14350fa1b3ccSPaul Dagnelie 1436eb633035STom Caputi err = dmu_object_info(rwa->os, obj, &doi); 14370fa1b3ccSPaul Dagnelie if (err == ENOENT) 14380fa1b3ccSPaul Dagnelie continue; 14390fa1b3ccSPaul Dagnelie else if (err != 0) 14400fa1b3ccSPaul Dagnelie return (err); 14410fa1b3ccSPaul Dagnelie 14420fa1b3ccSPaul Dagnelie err = dmu_free_long_object(rwa->os, obj); 1443eb633035STom Caputi 14440fa1b3ccSPaul Dagnelie if (err != 0) 14450fa1b3ccSPaul Dagnelie return (err); 14460fa1b3ccSPaul Dagnelie 14470fa1b3ccSPaul Dagnelie if (obj > rwa->max_object) 14480fa1b3ccSPaul Dagnelie rwa->max_object = obj; 14490fa1b3ccSPaul Dagnelie } 14500fa1b3ccSPaul Dagnelie if (next_err != ESRCH) 14510fa1b3ccSPaul Dagnelie return (next_err); 14520fa1b3ccSPaul Dagnelie return (0); 14530fa1b3ccSPaul Dagnelie } 14540fa1b3ccSPaul Dagnelie 14550fa1b3ccSPaul Dagnelie static int 14560fa1b3ccSPaul Dagnelie receive_write(struct receive_writer_arg *rwa, struct drr_write *drrw, 14570fa1b3ccSPaul Dagnelie arc_buf_t *abuf) 14580fa1b3ccSPaul Dagnelie { 14590fa1b3ccSPaul Dagnelie int err; 1460eb633035STom Caputi dmu_tx_t *tx; 1461eb633035STom Caputi dnode_t *dn; 14620fa1b3ccSPaul Dagnelie 14630fa1b3ccSPaul Dagnelie if (drrw->drr_offset + drrw->drr_logical_size < drrw->drr_offset || 14640fa1b3ccSPaul Dagnelie !DMU_OT_IS_VALID(drrw->drr_type)) 14650fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 14660fa1b3ccSPaul Dagnelie 14670fa1b3ccSPaul Dagnelie /* 14680fa1b3ccSPaul Dagnelie * For resuming to work, records must be in increasing order 14690fa1b3ccSPaul Dagnelie * by (object, offset). 14700fa1b3ccSPaul Dagnelie */ 14710fa1b3ccSPaul Dagnelie if (drrw->drr_object < rwa->last_object || 14720fa1b3ccSPaul Dagnelie (drrw->drr_object == rwa->last_object && 14730fa1b3ccSPaul Dagnelie drrw->drr_offset < rwa->last_offset)) { 14740fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 14750fa1b3ccSPaul Dagnelie } 14760fa1b3ccSPaul Dagnelie rwa->last_object = drrw->drr_object; 14770fa1b3ccSPaul Dagnelie rwa->last_offset = drrw->drr_offset; 14780fa1b3ccSPaul Dagnelie 14790fa1b3ccSPaul Dagnelie if (rwa->last_object > rwa->max_object) 14800fa1b3ccSPaul Dagnelie rwa->max_object = rwa->last_object; 14810fa1b3ccSPaul Dagnelie 14820fa1b3ccSPaul Dagnelie if (dmu_object_info(rwa->os, drrw->drr_object, NULL) != 0) 14830fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 14840fa1b3ccSPaul Dagnelie 14850fa1b3ccSPaul Dagnelie tx = dmu_tx_create(rwa->os); 14860fa1b3ccSPaul Dagnelie dmu_tx_hold_write(tx, drrw->drr_object, 14870fa1b3ccSPaul Dagnelie drrw->drr_offset, drrw->drr_logical_size); 14880fa1b3ccSPaul Dagnelie err = dmu_tx_assign(tx, TXG_WAIT); 14890fa1b3ccSPaul Dagnelie if (err != 0) { 14900fa1b3ccSPaul Dagnelie dmu_tx_abort(tx); 14910fa1b3ccSPaul Dagnelie return (err); 14920fa1b3ccSPaul Dagnelie } 1493eb633035STom Caputi 1494eb633035STom Caputi if (rwa->byteswap && !arc_is_encrypted(abuf) && 1495eb633035STom Caputi arc_get_compression(abuf) == ZIO_COMPRESS_OFF) { 14960fa1b3ccSPaul Dagnelie dmu_object_byteswap_t byteswap = 14970fa1b3ccSPaul Dagnelie DMU_OT_BYTESWAP(drrw->drr_type); 14980fa1b3ccSPaul Dagnelie dmu_ot_byteswap[byteswap].ob_func(abuf->b_data, 14990fa1b3ccSPaul Dagnelie DRR_WRITE_PAYLOAD_SIZE(drrw)); 15000fa1b3ccSPaul Dagnelie } 15010fa1b3ccSPaul Dagnelie 1502eb633035STom Caputi VERIFY0(dnode_hold(rwa->os, drrw->drr_object, FTAG, &dn)); 1503eb633035STom Caputi err = dmu_assign_arcbuf_by_dnode(dn, drrw->drr_offset, abuf, tx); 1504eb633035STom Caputi if (err != 0) { 1505eb633035STom Caputi dnode_rele(dn, FTAG); 1506eb633035STom Caputi dmu_tx_commit(tx); 1507eb633035STom Caputi return (err); 1508eb633035STom Caputi } 1509eb633035STom Caputi dnode_rele(dn, FTAG); 15100fa1b3ccSPaul Dagnelie 15110fa1b3ccSPaul Dagnelie /* 15120fa1b3ccSPaul Dagnelie * Note: If the receive fails, we want the resume stream to start 15130fa1b3ccSPaul Dagnelie * with the same record that we last successfully received (as opposed 15140fa1b3ccSPaul Dagnelie * to the next record), so that we can verify that we are 15150fa1b3ccSPaul Dagnelie * resuming from the correct location. 15160fa1b3ccSPaul Dagnelie */ 15170fa1b3ccSPaul Dagnelie save_resume_state(rwa, drrw->drr_object, drrw->drr_offset, tx); 15180fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 15190fa1b3ccSPaul Dagnelie 15200fa1b3ccSPaul Dagnelie return (0); 15210fa1b3ccSPaul Dagnelie } 15220fa1b3ccSPaul Dagnelie 15230fa1b3ccSPaul Dagnelie /* 15240fa1b3ccSPaul Dagnelie * Handle a DRR_WRITE_BYREF record. This record is used in dedup'ed 15250fa1b3ccSPaul Dagnelie * streams to refer to a copy of the data that is already on the 15260fa1b3ccSPaul Dagnelie * system because it came in earlier in the stream. This function 15270fa1b3ccSPaul Dagnelie * finds the earlier copy of the data, and uses that copy instead of 15280fa1b3ccSPaul Dagnelie * data from the stream to fulfill this write. 15290fa1b3ccSPaul Dagnelie */ 15300fa1b3ccSPaul Dagnelie static int 15310fa1b3ccSPaul Dagnelie receive_write_byref(struct receive_writer_arg *rwa, 15320fa1b3ccSPaul Dagnelie struct drr_write_byref *drrwbr) 15330fa1b3ccSPaul Dagnelie { 15340fa1b3ccSPaul Dagnelie dmu_tx_t *tx; 15350fa1b3ccSPaul Dagnelie int err; 15360fa1b3ccSPaul Dagnelie guid_map_entry_t gmesrch; 15370fa1b3ccSPaul Dagnelie guid_map_entry_t *gmep; 15380fa1b3ccSPaul Dagnelie avl_index_t where; 15390fa1b3ccSPaul Dagnelie objset_t *ref_os = NULL; 1540eb633035STom Caputi int flags = DMU_READ_PREFETCH; 15410fa1b3ccSPaul Dagnelie dmu_buf_t *dbp; 15420fa1b3ccSPaul Dagnelie 15430fa1b3ccSPaul Dagnelie if (drrwbr->drr_offset + drrwbr->drr_length < drrwbr->drr_offset) 15440fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 15450fa1b3ccSPaul Dagnelie 15460fa1b3ccSPaul Dagnelie /* 15470fa1b3ccSPaul Dagnelie * If the GUID of the referenced dataset is different from the 15480fa1b3ccSPaul Dagnelie * GUID of the target dataset, find the referenced dataset. 15490fa1b3ccSPaul Dagnelie */ 15500fa1b3ccSPaul Dagnelie if (drrwbr->drr_toguid != drrwbr->drr_refguid) { 15510fa1b3ccSPaul Dagnelie gmesrch.guid = drrwbr->drr_refguid; 15520fa1b3ccSPaul Dagnelie if ((gmep = avl_find(rwa->guid_to_ds_map, &gmesrch, 15530fa1b3ccSPaul Dagnelie &where)) == NULL) { 15540fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 15550fa1b3ccSPaul Dagnelie } 15560fa1b3ccSPaul Dagnelie if (dmu_objset_from_ds(gmep->gme_ds, &ref_os)) 15570fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 15580fa1b3ccSPaul Dagnelie } else { 15590fa1b3ccSPaul Dagnelie ref_os = rwa->os; 15600fa1b3ccSPaul Dagnelie } 15610fa1b3ccSPaul Dagnelie 15620fa1b3ccSPaul Dagnelie if (drrwbr->drr_object > rwa->max_object) 15630fa1b3ccSPaul Dagnelie rwa->max_object = drrwbr->drr_object; 15640fa1b3ccSPaul Dagnelie 1565eb633035STom Caputi if (rwa->raw) 1566eb633035STom Caputi flags |= DMU_READ_NO_DECRYPT; 1567eb633035STom Caputi 1568eb633035STom Caputi /* may return either a regular db or an encrypted one */ 15690fa1b3ccSPaul Dagnelie err = dmu_buf_hold(ref_os, drrwbr->drr_refobject, 1570eb633035STom Caputi drrwbr->drr_refoffset, FTAG, &dbp, flags); 15710fa1b3ccSPaul Dagnelie if (err != 0) 15720fa1b3ccSPaul Dagnelie return (err); 15730fa1b3ccSPaul Dagnelie 15740fa1b3ccSPaul Dagnelie tx = dmu_tx_create(rwa->os); 15750fa1b3ccSPaul Dagnelie 15760fa1b3ccSPaul Dagnelie dmu_tx_hold_write(tx, drrwbr->drr_object, 15770fa1b3ccSPaul Dagnelie drrwbr->drr_offset, drrwbr->drr_length); 15780fa1b3ccSPaul Dagnelie err = dmu_tx_assign(tx, TXG_WAIT); 15790fa1b3ccSPaul Dagnelie if (err != 0) { 15800fa1b3ccSPaul Dagnelie dmu_tx_abort(tx); 15810fa1b3ccSPaul Dagnelie return (err); 15820fa1b3ccSPaul Dagnelie } 1583eb633035STom Caputi 1584eb633035STom Caputi if (rwa->raw) { 1585eb633035STom Caputi dmu_copy_from_buf(rwa->os, drrwbr->drr_object, 1586eb633035STom Caputi drrwbr->drr_offset, dbp, tx); 1587eb633035STom Caputi } else { 1588eb633035STom Caputi dmu_write(rwa->os, drrwbr->drr_object, 1589eb633035STom Caputi drrwbr->drr_offset, drrwbr->drr_length, dbp->db_data, tx); 1590eb633035STom Caputi } 15910fa1b3ccSPaul Dagnelie dmu_buf_rele(dbp, FTAG); 15920fa1b3ccSPaul Dagnelie 15930fa1b3ccSPaul Dagnelie /* See comment in restore_write. */ 15940fa1b3ccSPaul Dagnelie save_resume_state(rwa, drrwbr->drr_object, drrwbr->drr_offset, tx); 15950fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 15960fa1b3ccSPaul Dagnelie return (0); 15970fa1b3ccSPaul Dagnelie } 15980fa1b3ccSPaul Dagnelie 15990fa1b3ccSPaul Dagnelie static int 16000fa1b3ccSPaul Dagnelie receive_write_embedded(struct receive_writer_arg *rwa, 16010fa1b3ccSPaul Dagnelie struct drr_write_embedded *drrwe, void *data) 16020fa1b3ccSPaul Dagnelie { 16030fa1b3ccSPaul Dagnelie dmu_tx_t *tx; 16040fa1b3ccSPaul Dagnelie int err; 16050fa1b3ccSPaul Dagnelie 16060fa1b3ccSPaul Dagnelie if (drrwe->drr_offset + drrwe->drr_length < drrwe->drr_offset) 16070fa1b3ccSPaul Dagnelie return (EINVAL); 16080fa1b3ccSPaul Dagnelie 16090fa1b3ccSPaul Dagnelie if (drrwe->drr_psize > BPE_PAYLOAD_SIZE) 16100fa1b3ccSPaul Dagnelie return (EINVAL); 16110fa1b3ccSPaul Dagnelie 16120fa1b3ccSPaul Dagnelie if (drrwe->drr_etype >= NUM_BP_EMBEDDED_TYPES) 16130fa1b3ccSPaul Dagnelie return (EINVAL); 16140fa1b3ccSPaul Dagnelie if (drrwe->drr_compression >= ZIO_COMPRESS_FUNCTIONS) 16150fa1b3ccSPaul Dagnelie return (EINVAL); 1616eb633035STom Caputi if (rwa->raw) 1617eb633035STom Caputi return (SET_ERROR(EINVAL)); 16180fa1b3ccSPaul Dagnelie 16190fa1b3ccSPaul Dagnelie if (drrwe->drr_object > rwa->max_object) 16200fa1b3ccSPaul Dagnelie rwa->max_object = drrwe->drr_object; 16210fa1b3ccSPaul Dagnelie 16220fa1b3ccSPaul Dagnelie tx = dmu_tx_create(rwa->os); 16230fa1b3ccSPaul Dagnelie 16240fa1b3ccSPaul Dagnelie dmu_tx_hold_write(tx, drrwe->drr_object, 16250fa1b3ccSPaul Dagnelie drrwe->drr_offset, drrwe->drr_length); 16260fa1b3ccSPaul Dagnelie err = dmu_tx_assign(tx, TXG_WAIT); 16270fa1b3ccSPaul Dagnelie if (err != 0) { 16280fa1b3ccSPaul Dagnelie dmu_tx_abort(tx); 16290fa1b3ccSPaul Dagnelie return (err); 16300fa1b3ccSPaul Dagnelie } 16310fa1b3ccSPaul Dagnelie 16320fa1b3ccSPaul Dagnelie dmu_write_embedded(rwa->os, drrwe->drr_object, 16330fa1b3ccSPaul Dagnelie drrwe->drr_offset, data, drrwe->drr_etype, 16340fa1b3ccSPaul Dagnelie drrwe->drr_compression, drrwe->drr_lsize, drrwe->drr_psize, 16350fa1b3ccSPaul Dagnelie rwa->byteswap ^ ZFS_HOST_BYTEORDER, tx); 16360fa1b3ccSPaul Dagnelie 16370fa1b3ccSPaul Dagnelie /* See comment in restore_write. */ 16380fa1b3ccSPaul Dagnelie save_resume_state(rwa, drrwe->drr_object, drrwe->drr_offset, tx); 16390fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 16400fa1b3ccSPaul Dagnelie return (0); 16410fa1b3ccSPaul Dagnelie } 16420fa1b3ccSPaul Dagnelie 16430fa1b3ccSPaul Dagnelie static int 16440fa1b3ccSPaul Dagnelie receive_spill(struct receive_writer_arg *rwa, struct drr_spill *drrs, 1645eb633035STom Caputi arc_buf_t *abuf) 16460fa1b3ccSPaul Dagnelie { 16470fa1b3ccSPaul Dagnelie dmu_tx_t *tx; 16480fa1b3ccSPaul Dagnelie dmu_buf_t *db, *db_spill; 16490fa1b3ccSPaul Dagnelie int err; 1650eb633035STom Caputi uint32_t flags = 0; 16510fa1b3ccSPaul Dagnelie 16520fa1b3ccSPaul Dagnelie if (drrs->drr_length < SPA_MINBLOCKSIZE || 16530fa1b3ccSPaul Dagnelie drrs->drr_length > spa_maxblocksize(dmu_objset_spa(rwa->os))) 16540fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 16550fa1b3ccSPaul Dagnelie 1656eb633035STom Caputi /* 1657eb633035STom Caputi * This is an unmodified spill block which was added to the stream 1658eb633035STom Caputi * to resolve an issue with incorrectly removing spill blocks. It 1659eb633035STom Caputi * should be ignored by current versions of the code which support 1660eb633035STom Caputi * the DRR_FLAG_SPILL_BLOCK flag. 1661eb633035STom Caputi */ 1662eb633035STom Caputi if (rwa->spill && DRR_SPILL_IS_UNMODIFIED(drrs->drr_flags)) { 1663eb633035STom Caputi dmu_return_arcbuf(abuf); 1664eb633035STom Caputi return (0); 1665eb633035STom Caputi } 1666eb633035STom Caputi 1667eb633035STom Caputi if (rwa->raw) { 1668eb633035STom Caputi if (!DMU_OT_IS_VALID(drrs->drr_type) || 1669eb633035STom Caputi drrs->drr_compressiontype >= ZIO_COMPRESS_FUNCTIONS || 1670eb633035STom Caputi drrs->drr_compressed_size == 0) 1671eb633035STom Caputi return (SET_ERROR(EINVAL)); 1672eb633035STom Caputi 1673eb633035STom Caputi flags |= DMU_READ_NO_DECRYPT; 1674eb633035STom Caputi } 1675eb633035STom Caputi 16760fa1b3ccSPaul Dagnelie if (dmu_object_info(rwa->os, drrs->drr_object, NULL) != 0) 16770fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 16780fa1b3ccSPaul Dagnelie 16790fa1b3ccSPaul Dagnelie if (drrs->drr_object > rwa->max_object) 16800fa1b3ccSPaul Dagnelie rwa->max_object = drrs->drr_object; 16810fa1b3ccSPaul Dagnelie 16820fa1b3ccSPaul Dagnelie VERIFY0(dmu_bonus_hold(rwa->os, drrs->drr_object, FTAG, &db)); 1683eb633035STom Caputi if ((err = dmu_spill_hold_by_bonus(db, DMU_READ_NO_DECRYPT, FTAG, 1684eb633035STom Caputi &db_spill)) != 0) { 16850fa1b3ccSPaul Dagnelie dmu_buf_rele(db, FTAG); 16860fa1b3ccSPaul Dagnelie return (err); 16870fa1b3ccSPaul Dagnelie } 16880fa1b3ccSPaul Dagnelie 16890fa1b3ccSPaul Dagnelie tx = dmu_tx_create(rwa->os); 16900fa1b3ccSPaul Dagnelie 16910fa1b3ccSPaul Dagnelie dmu_tx_hold_spill(tx, db->db_object); 16920fa1b3ccSPaul Dagnelie 16930fa1b3ccSPaul Dagnelie err = dmu_tx_assign(tx, TXG_WAIT); 16940fa1b3ccSPaul Dagnelie if (err != 0) { 16950fa1b3ccSPaul Dagnelie dmu_buf_rele(db, FTAG); 16960fa1b3ccSPaul Dagnelie dmu_buf_rele(db_spill, FTAG); 16970fa1b3ccSPaul Dagnelie dmu_tx_abort(tx); 16980fa1b3ccSPaul Dagnelie return (err); 16990fa1b3ccSPaul Dagnelie } 17000fa1b3ccSPaul Dagnelie 1701eb633035STom Caputi /* 1702eb633035STom Caputi * Spill blocks may both grow and shrink. When a change in size 1703eb633035STom Caputi * occurs any existing dbuf must be updated to match the logical 1704eb633035STom Caputi * size of the provided arc_buf_t. 1705eb633035STom Caputi */ 1706eb633035STom Caputi if (db_spill->db_size != drrs->drr_length) { 1707eb633035STom Caputi dmu_buf_will_fill(db_spill, tx); 17080fa1b3ccSPaul Dagnelie VERIFY(0 == dbuf_spill_set_blksz(db_spill, 17090fa1b3ccSPaul Dagnelie drrs->drr_length, tx)); 1710eb633035STom Caputi } 1711eb633035STom Caputi 1712eb633035STom Caputi if (rwa->byteswap && !arc_is_encrypted(abuf) && 1713eb633035STom Caputi arc_get_compression(abuf) == ZIO_COMPRESS_OFF) { 1714eb633035STom Caputi dmu_object_byteswap_t byteswap = 1715eb633035STom Caputi DMU_OT_BYTESWAP(drrs->drr_type); 1716eb633035STom Caputi dmu_ot_byteswap[byteswap].ob_func(abuf->b_data, 1717eb633035STom Caputi DRR_SPILL_PAYLOAD_SIZE(drrs)); 1718eb633035STom Caputi } 1719eb633035STom Caputi 1720eb633035STom Caputi dbuf_assign_arcbuf((dmu_buf_impl_t *)db_spill, abuf, tx); 17210fa1b3ccSPaul Dagnelie 17220fa1b3ccSPaul Dagnelie dmu_buf_rele(db, FTAG); 17230fa1b3ccSPaul Dagnelie dmu_buf_rele(db_spill, FTAG); 17240fa1b3ccSPaul Dagnelie 17250fa1b3ccSPaul Dagnelie dmu_tx_commit(tx); 17260fa1b3ccSPaul Dagnelie return (0); 17270fa1b3ccSPaul Dagnelie } 17280fa1b3ccSPaul Dagnelie 17290fa1b3ccSPaul Dagnelie /* ARGSUSED */ 17300fa1b3ccSPaul Dagnelie static int 17310fa1b3ccSPaul Dagnelie receive_free(struct receive_writer_arg *rwa, struct drr_free *drrf) 17320fa1b3ccSPaul Dagnelie { 17330fa1b3ccSPaul Dagnelie int err; 17340fa1b3ccSPaul Dagnelie 1735eb633035STom Caputi if (drrf->drr_length != DMU_OBJECT_END && 17360fa1b3ccSPaul Dagnelie drrf->drr_offset + drrf->drr_length < drrf->drr_offset) 17370fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 17380fa1b3ccSPaul Dagnelie 17390fa1b3ccSPaul Dagnelie if (dmu_object_info(rwa->os, drrf->drr_object, NULL) != 0) 17400fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 17410fa1b3ccSPaul Dagnelie 17420fa1b3ccSPaul Dagnelie if (drrf->drr_object > rwa->max_object) 17430fa1b3ccSPaul Dagnelie rwa->max_object = drrf->drr_object; 17440fa1b3ccSPaul Dagnelie 17450fa1b3ccSPaul Dagnelie err = dmu_free_long_range(rwa->os, drrf->drr_object, 17460fa1b3ccSPaul Dagnelie drrf->drr_offset, drrf->drr_length); 17470fa1b3ccSPaul Dagnelie 17480fa1b3ccSPaul Dagnelie return (err); 17490fa1b3ccSPaul Dagnelie } 17500fa1b3ccSPaul Dagnelie 1751eb633035STom Caputi static int 1752eb633035STom Caputi receive_object_range(struct receive_writer_arg *rwa, 1753eb633035STom Caputi struct drr_object_range *drror) 1754eb633035STom Caputi { 1755eb633035STom Caputi /* 1756eb633035STom Caputi * By default, we assume this block is in our native format 1757eb633035STom Caputi * (ZFS_HOST_BYTEORDER). We then take into account whether 1758eb633035STom Caputi * the send stream is byteswapped (rwa->byteswap). Finally, 1759eb633035STom Caputi * we need to byteswap again if this particular block was 1760eb633035STom Caputi * in non-native format on the send side. 1761eb633035STom Caputi */ 1762eb633035STom Caputi boolean_t byteorder = ZFS_HOST_BYTEORDER ^ rwa->byteswap ^ 1763eb633035STom Caputi !!DRR_IS_RAW_BYTESWAPPED(drror->drr_flags); 1764eb633035STom Caputi 1765eb633035STom Caputi /* 1766eb633035STom Caputi * Since dnode block sizes are constant, we should not need to worry 1767eb633035STom Caputi * about making sure that the dnode block size is the same on the 1768eb633035STom Caputi * sending and receiving sides for the time being. For non-raw sends, 1769eb633035STom Caputi * this does not matter (and in fact we do not send a DRR_OBJECT_RANGE 1770eb633035STom Caputi * record at all). Raw sends require this record type because the 1771eb633035STom Caputi * encryption parameters are used to protect an entire block of bonus 1772eb633035STom Caputi * buffers. If the size of dnode blocks ever becomes variable, 1773eb633035STom Caputi * handling will need to be added to ensure that dnode block sizes 1774eb633035STom Caputi * match on the sending and receiving side. 1775eb633035STom Caputi */ 1776eb633035STom Caputi if (drror->drr_numslots != DNODES_PER_BLOCK || 1777eb633035STom Caputi P2PHASE(drror->drr_firstobj, DNODES_PER_BLOCK) != 0 || 1778eb633035STom Caputi !rwa->raw) 1779eb633035STom Caputi return (SET_ERROR(EINVAL)); 1780eb633035STom Caputi 1781eb633035STom Caputi if (drror->drr_firstobj > rwa->max_object) 1782eb633035STom Caputi rwa->max_object = drror->drr_firstobj; 1783eb633035STom Caputi 1784eb633035STom Caputi /* 1785eb633035STom Caputi * The DRR_OBJECT_RANGE handling must be deferred to receive_object() 1786eb633035STom Caputi * so that the block of dnodes is not written out when it's empty, 1787eb633035STom Caputi * and converted to a HOLE BP. 1788eb633035STom Caputi */ 1789eb633035STom Caputi rwa->or_crypt_params_present = B_TRUE; 1790eb633035STom Caputi rwa->or_firstobj = drror->drr_firstobj; 1791eb633035STom Caputi rwa->or_numslots = drror->drr_numslots; 1792eb633035STom Caputi bcopy(drror->drr_salt, rwa->or_salt, ZIO_DATA_SALT_LEN); 1793eb633035STom Caputi bcopy(drror->drr_iv, rwa->or_iv, ZIO_DATA_IV_LEN); 1794eb633035STom Caputi bcopy(drror->drr_mac, rwa->or_mac, ZIO_DATA_MAC_LEN); 1795eb633035STom Caputi rwa->or_byteorder = byteorder; 1796eb633035STom Caputi 1797eb633035STom Caputi return (0); 1798eb633035STom Caputi } 1799eb633035STom Caputi 18000fa1b3ccSPaul Dagnelie /* used to destroy the drc_ds on error */ 18010fa1b3ccSPaul Dagnelie static void 18020fa1b3ccSPaul Dagnelie dmu_recv_cleanup_ds(dmu_recv_cookie_t *drc) 18030fa1b3ccSPaul Dagnelie { 1804eb633035STom Caputi dsl_dataset_t *ds = drc->drc_ds; 1805eb633035STom Caputi ds_hold_flags_t dsflags = (drc->drc_raw) ? 0 : DS_HOLD_FLAG_DECRYPT; 1806eb633035STom Caputi 1807eb633035STom Caputi /* 1808eb633035STom Caputi * Wait for the txg sync before cleaning up the receive. For 1809eb633035STom Caputi * resumable receives, this ensures that our resume state has 1810eb633035STom Caputi * been written out to disk. For raw receives, this ensures 1811eb633035STom Caputi * that the user accounting code will not attempt to do anything 1812eb633035STom Caputi * after we stopped receiving the dataset. 1813eb633035STom Caputi */ 1814eb633035STom Caputi txg_wait_synced(ds->ds_dir->dd_pool, 0); 1815eb633035STom Caputi ds->ds_objset->os_raw_receive = B_FALSE; 1816eb633035STom Caputi 1817eb633035STom Caputi rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); 1818eb633035STom Caputi if (drc->drc_resumable && !BP_IS_HOLE(dsl_dataset_get_blkptr(ds))) { 1819eb633035STom Caputi rrw_exit(&ds->ds_bp_rwlock, FTAG); 1820eb633035STom Caputi dsl_dataset_disown(ds, dsflags, dmu_recv_tag); 18210fa1b3ccSPaul Dagnelie } else { 18220fa1b3ccSPaul Dagnelie char name[ZFS_MAX_DATASET_NAME_LEN]; 1823eb633035STom Caputi rrw_exit(&ds->ds_bp_rwlock, FTAG); 1824eb633035STom Caputi dsl_dataset_name(ds, name); 1825eb633035STom Caputi dsl_dataset_disown(ds, dsflags, dmu_recv_tag); 18260fa1b3ccSPaul Dagnelie (void) dsl_destroy_head(name); 18270fa1b3ccSPaul Dagnelie } 18280fa1b3ccSPaul Dagnelie } 18290fa1b3ccSPaul Dagnelie 18300fa1b3ccSPaul Dagnelie static void 18310fa1b3ccSPaul Dagnelie receive_cksum(struct receive_arg *ra, int len, void *buf) 18320fa1b3ccSPaul Dagnelie { 18330fa1b3ccSPaul Dagnelie if (ra->byteswap) { 18340fa1b3ccSPaul Dagnelie (void) fletcher_4_incremental_byteswap(buf, len, &ra->cksum); 18350fa1b3ccSPaul Dagnelie } else { 18360fa1b3ccSPaul Dagnelie (void) fletcher_4_incremental_native(buf, len, &ra->cksum); 18370fa1b3ccSPaul Dagnelie } 18380fa1b3ccSPaul Dagnelie } 18390fa1b3ccSPaul Dagnelie 18400fa1b3ccSPaul Dagnelie /* 18410fa1b3ccSPaul Dagnelie * Read the payload into a buffer of size len, and update the current record's 18420fa1b3ccSPaul Dagnelie * payload field. 18430fa1b3ccSPaul Dagnelie * Allocate ra->next_rrd and read the next record's header into 18440fa1b3ccSPaul Dagnelie * ra->next_rrd->header. 18450fa1b3ccSPaul Dagnelie * Verify checksum of payload and next record. 18460fa1b3ccSPaul Dagnelie */ 18470fa1b3ccSPaul Dagnelie static int 18480fa1b3ccSPaul Dagnelie receive_read_payload_and_next_header(struct receive_arg *ra, int len, void *buf) 18490fa1b3ccSPaul Dagnelie { 18500fa1b3ccSPaul Dagnelie int err; 18510fa1b3ccSPaul Dagnelie 18520fa1b3ccSPaul Dagnelie if (len != 0) { 18530fa1b3ccSPaul Dagnelie ASSERT3U(len, <=, SPA_MAXBLOCKSIZE); 18540fa1b3ccSPaul Dagnelie err = receive_read(ra, len, buf); 18550fa1b3ccSPaul Dagnelie if (err != 0) 18560fa1b3ccSPaul Dagnelie return (err); 18570fa1b3ccSPaul Dagnelie receive_cksum(ra, len, buf); 18580fa1b3ccSPaul Dagnelie 18590fa1b3ccSPaul Dagnelie /* note: rrd is NULL when reading the begin record's payload */ 18600fa1b3ccSPaul Dagnelie if (ra->rrd != NULL) { 18610fa1b3ccSPaul Dagnelie ra->rrd->payload = buf; 18620fa1b3ccSPaul Dagnelie ra->rrd->payload_size = len; 18630fa1b3ccSPaul Dagnelie ra->rrd->bytes_read = ra->bytes_read; 18640fa1b3ccSPaul Dagnelie } 18650fa1b3ccSPaul Dagnelie } 18660fa1b3ccSPaul Dagnelie 18670fa1b3ccSPaul Dagnelie ra->prev_cksum = ra->cksum; 18680fa1b3ccSPaul Dagnelie 18690fa1b3ccSPaul Dagnelie ra->next_rrd = kmem_zalloc(sizeof (*ra->next_rrd), KM_SLEEP); 18700fa1b3ccSPaul Dagnelie err = receive_read(ra, sizeof (ra->next_rrd->header), 18710fa1b3ccSPaul Dagnelie &ra->next_rrd->header); 18720fa1b3ccSPaul Dagnelie ra->next_rrd->bytes_read = ra->bytes_read; 1873eb633035STom Caputi 18740fa1b3ccSPaul Dagnelie if (err != 0) { 18750fa1b3ccSPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 18760fa1b3ccSPaul Dagnelie ra->next_rrd = NULL; 18770fa1b3ccSPaul Dagnelie return (err); 18780fa1b3ccSPaul Dagnelie } 18790fa1b3ccSPaul Dagnelie if (ra->next_rrd->header.drr_type == DRR_BEGIN) { 18800fa1b3ccSPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 18810fa1b3ccSPaul Dagnelie ra->next_rrd = NULL; 18820fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 18830fa1b3ccSPaul Dagnelie } 18840fa1b3ccSPaul Dagnelie 18850fa1b3ccSPaul Dagnelie /* 18860fa1b3ccSPaul Dagnelie * Note: checksum is of everything up to but not including the 18870fa1b3ccSPaul Dagnelie * checksum itself. 18880fa1b3ccSPaul Dagnelie */ 18890fa1b3ccSPaul Dagnelie ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 18900fa1b3ccSPaul Dagnelie ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); 18910fa1b3ccSPaul Dagnelie receive_cksum(ra, 18920fa1b3ccSPaul Dagnelie offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), 18930fa1b3ccSPaul Dagnelie &ra->next_rrd->header); 18940fa1b3ccSPaul Dagnelie 18950fa1b3ccSPaul Dagnelie zio_cksum_t cksum_orig = 18960fa1b3ccSPaul Dagnelie ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 18970fa1b3ccSPaul Dagnelie zio_cksum_t *cksump = 18980fa1b3ccSPaul Dagnelie &ra->next_rrd->header.drr_u.drr_checksum.drr_checksum; 18990fa1b3ccSPaul Dagnelie 19000fa1b3ccSPaul Dagnelie if (ra->byteswap) 19010fa1b3ccSPaul Dagnelie byteswap_record(&ra->next_rrd->header); 19020fa1b3ccSPaul Dagnelie 19030fa1b3ccSPaul Dagnelie if ((!ZIO_CHECKSUM_IS_ZERO(cksump)) && 19040fa1b3ccSPaul Dagnelie !ZIO_CHECKSUM_EQUAL(ra->cksum, *cksump)) { 19050fa1b3ccSPaul Dagnelie kmem_free(ra->next_rrd, sizeof (*ra->next_rrd)); 19060fa1b3ccSPaul Dagnelie ra->next_rrd = NULL; 19070fa1b3ccSPaul Dagnelie return (SET_ERROR(ECKSUM)); 19080fa1b3ccSPaul Dagnelie } 19090fa1b3ccSPaul Dagnelie 19100fa1b3ccSPaul Dagnelie receive_cksum(ra, sizeof (cksum_orig), &cksum_orig); 19110fa1b3ccSPaul Dagnelie 19120fa1b3ccSPaul Dagnelie return (0); 19130fa1b3ccSPaul Dagnelie } 19140fa1b3ccSPaul Dagnelie 19150fa1b3ccSPaul Dagnelie static void 19160fa1b3ccSPaul Dagnelie objlist_create(struct objlist *list) 19170fa1b3ccSPaul Dagnelie { 19180fa1b3ccSPaul Dagnelie list_create(&list->list, sizeof (struct receive_objnode), 19190fa1b3ccSPaul Dagnelie offsetof(struct receive_objnode, node)); 19200fa1b3ccSPaul Dagnelie list->last_lookup = 0; 19210fa1b3ccSPaul Dagnelie } 19220fa1b3ccSPaul Dagnelie 19230fa1b3ccSPaul Dagnelie static void 19240fa1b3ccSPaul Dagnelie objlist_destroy(struct objlist *list) 19250fa1b3ccSPaul Dagnelie { 19260fa1b3ccSPaul Dagnelie for (struct receive_objnode *n = list_remove_head(&list->list); 19270fa1b3ccSPaul Dagnelie n != NULL; n = list_remove_head(&list->list)) { 19280fa1b3ccSPaul Dagnelie kmem_free(n, sizeof (*n)); 19290fa1b3ccSPaul Dagnelie } 19300fa1b3ccSPaul Dagnelie list_destroy(&list->list); 19310fa1b3ccSPaul Dagnelie } 19320fa1b3ccSPaul Dagnelie 19330fa1b3ccSPaul Dagnelie /* 19340fa1b3ccSPaul Dagnelie * This function looks through the objlist to see if the specified object number 19350fa1b3ccSPaul Dagnelie * is contained in the objlist. In the process, it will remove all object 19360fa1b3ccSPaul Dagnelie * numbers in the list that are smaller than the specified object number. Thus, 19370fa1b3ccSPaul Dagnelie * any lookup of an object number smaller than a previously looked up object 19380fa1b3ccSPaul Dagnelie * number will always return false; therefore, all lookups should be done in 19390fa1b3ccSPaul Dagnelie * ascending order. 19400fa1b3ccSPaul Dagnelie */ 19410fa1b3ccSPaul Dagnelie static boolean_t 19420fa1b3ccSPaul Dagnelie objlist_exists(struct objlist *list, uint64_t object) 19430fa1b3ccSPaul Dagnelie { 19440fa1b3ccSPaul Dagnelie struct receive_objnode *node = list_head(&list->list); 19450fa1b3ccSPaul Dagnelie ASSERT3U(object, >=, list->last_lookup); 19460fa1b3ccSPaul Dagnelie list->last_lookup = object; 19470fa1b3ccSPaul Dagnelie while (node != NULL && node->object < object) { 19480fa1b3ccSPaul Dagnelie VERIFY3P(node, ==, list_remove_head(&list->list)); 19490fa1b3ccSPaul Dagnelie kmem_free(node, sizeof (*node)); 19500fa1b3ccSPaul Dagnelie node = list_head(&list->list); 19510fa1b3ccSPaul Dagnelie } 19520fa1b3ccSPaul Dagnelie return (node != NULL && node->object == object); 19530fa1b3ccSPaul Dagnelie } 19540fa1b3ccSPaul Dagnelie 19550fa1b3ccSPaul Dagnelie /* 19560fa1b3ccSPaul Dagnelie * The objlist is a list of object numbers stored in ascending order. However, 19570fa1b3ccSPaul Dagnelie * the insertion of new object numbers does not seek out the correct location to 19580fa1b3ccSPaul Dagnelie * store a new object number; instead, it appends it to the list for simplicity. 19590fa1b3ccSPaul Dagnelie * Thus, any users must take care to only insert new object numbers in ascending 19600fa1b3ccSPaul Dagnelie * order. 19610fa1b3ccSPaul Dagnelie */ 19620fa1b3ccSPaul Dagnelie static void 19630fa1b3ccSPaul Dagnelie objlist_insert(struct objlist *list, uint64_t object) 19640fa1b3ccSPaul Dagnelie { 19650fa1b3ccSPaul Dagnelie struct receive_objnode *node = kmem_zalloc(sizeof (*node), KM_SLEEP); 19660fa1b3ccSPaul Dagnelie node->object = object; 19670fa1b3ccSPaul Dagnelie #ifdef ZFS_DEBUG 19680fa1b3ccSPaul Dagnelie struct receive_objnode *last_object = list_tail(&list->list); 19690fa1b3ccSPaul Dagnelie uint64_t last_objnum = (last_object != NULL ? last_object->object : 0); 19700fa1b3ccSPaul Dagnelie ASSERT3U(node->object, >, last_objnum); 19710fa1b3ccSPaul Dagnelie #endif 19720fa1b3ccSPaul Dagnelie list_insert_tail(&list->list, node); 19730fa1b3ccSPaul Dagnelie } 19740fa1b3ccSPaul Dagnelie 19750fa1b3ccSPaul Dagnelie /* 19760fa1b3ccSPaul Dagnelie * Issue the prefetch reads for any necessary indirect blocks. 19770fa1b3ccSPaul Dagnelie * 19780fa1b3ccSPaul Dagnelie * We use the object ignore list to tell us whether or not to issue prefetches 19790fa1b3ccSPaul Dagnelie * for a given object. We do this for both correctness (in case the blocksize 19800fa1b3ccSPaul Dagnelie * of an object has changed) and performance (if the object doesn't exist, don't 19810fa1b3ccSPaul Dagnelie * needlessly try to issue prefetches). We also trim the list as we go through 19820fa1b3ccSPaul Dagnelie * the stream to prevent it from growing to an unbounded size. 19830fa1b3ccSPaul Dagnelie * 19840fa1b3ccSPaul Dagnelie * The object numbers within will always be in sorted order, and any write 19850fa1b3ccSPaul Dagnelie * records we see will also be in sorted order, but they're not sorted with 19860fa1b3ccSPaul Dagnelie * respect to each other (i.e. we can get several object records before 19870fa1b3ccSPaul Dagnelie * receiving each object's write records). As a result, once we've reached a 19880fa1b3ccSPaul Dagnelie * given object number, we can safely remove any reference to lower object 19890fa1b3ccSPaul Dagnelie * numbers in the ignore list. In practice, we receive up to 32 object records 19900fa1b3ccSPaul Dagnelie * before receiving write records, so the list can have up to 32 nodes in it. 19910fa1b3ccSPaul Dagnelie */ 19920fa1b3ccSPaul Dagnelie /* ARGSUSED */ 19930fa1b3ccSPaul Dagnelie static void 19940fa1b3ccSPaul Dagnelie receive_read_prefetch(struct receive_arg *ra, 19950fa1b3ccSPaul Dagnelie uint64_t object, uint64_t offset, uint64_t length) 19960fa1b3ccSPaul Dagnelie { 19970fa1b3ccSPaul Dagnelie if (!objlist_exists(&ra->ignore_objlist, object)) { 19980fa1b3ccSPaul Dagnelie dmu_prefetch(ra->os, object, 1, offset, length, 19990fa1b3ccSPaul Dagnelie ZIO_PRIORITY_SYNC_READ); 20000fa1b3ccSPaul Dagnelie } 20010fa1b3ccSPaul Dagnelie } 20020fa1b3ccSPaul Dagnelie 20030fa1b3ccSPaul Dagnelie /* 20040fa1b3ccSPaul Dagnelie * Read records off the stream, issuing any necessary prefetches. 20050fa1b3ccSPaul Dagnelie */ 20060fa1b3ccSPaul Dagnelie static int 20070fa1b3ccSPaul Dagnelie receive_read_record(struct receive_arg *ra) 20080fa1b3ccSPaul Dagnelie { 20090fa1b3ccSPaul Dagnelie int err; 20100fa1b3ccSPaul Dagnelie 20110fa1b3ccSPaul Dagnelie switch (ra->rrd->header.drr_type) { 20120fa1b3ccSPaul Dagnelie case DRR_OBJECT: 20130fa1b3ccSPaul Dagnelie { 20140fa1b3ccSPaul Dagnelie struct drr_object *drro = &ra->rrd->header.drr_u.drr_object; 2015eb633035STom Caputi uint32_t size = DRR_OBJECT_PAYLOAD_SIZE(drro); 2016eb633035STom Caputi void *buf = NULL; 20170fa1b3ccSPaul Dagnelie dmu_object_info_t doi; 2018eb633035STom Caputi 2019eb633035STom Caputi if (size != 0) 2020eb633035STom Caputi buf = kmem_zalloc(size, KM_SLEEP); 2021eb633035STom Caputi 20220fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 20230fa1b3ccSPaul Dagnelie if (err != 0) { 20240fa1b3ccSPaul Dagnelie kmem_free(buf, size); 20250fa1b3ccSPaul Dagnelie return (err); 20260fa1b3ccSPaul Dagnelie } 20270fa1b3ccSPaul Dagnelie err = dmu_object_info(ra->os, drro->drr_object, &doi); 20280fa1b3ccSPaul Dagnelie /* 20290fa1b3ccSPaul Dagnelie * See receive_read_prefetch for an explanation why we're 20300fa1b3ccSPaul Dagnelie * storing this object in the ignore_obj_list. 20310fa1b3ccSPaul Dagnelie */ 2032eb633035STom Caputi if (err == ENOENT || err == EEXIST || 20330fa1b3ccSPaul Dagnelie (err == 0 && doi.doi_data_block_size != drro->drr_blksz)) { 20340fa1b3ccSPaul Dagnelie objlist_insert(&ra->ignore_objlist, drro->drr_object); 20350fa1b3ccSPaul Dagnelie err = 0; 20360fa1b3ccSPaul Dagnelie } 20370fa1b3ccSPaul Dagnelie return (err); 20380fa1b3ccSPaul Dagnelie } 20390fa1b3ccSPaul Dagnelie case DRR_FREEOBJECTS: 20400fa1b3ccSPaul Dagnelie { 20410fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 20420fa1b3ccSPaul Dagnelie return (err); 20430fa1b3ccSPaul Dagnelie } 20440fa1b3ccSPaul Dagnelie case DRR_WRITE: 20450fa1b3ccSPaul Dagnelie { 20460fa1b3ccSPaul Dagnelie struct drr_write *drrw = &ra->rrd->header.drr_u.drr_write; 20470fa1b3ccSPaul Dagnelie arc_buf_t *abuf; 20480fa1b3ccSPaul Dagnelie boolean_t is_meta = DMU_OT_IS_METADATA(drrw->drr_type); 2049eb633035STom Caputi 2050eb633035STom Caputi if (ra->raw) { 2051eb633035STom Caputi boolean_t byteorder = ZFS_HOST_BYTEORDER ^ 2052eb633035STom Caputi !!DRR_IS_RAW_BYTESWAPPED(drrw->drr_flags) ^ 2053eb633035STom Caputi ra->byteswap; 2054eb633035STom Caputi 2055eb633035STom Caputi abuf = arc_loan_raw_buf(dmu_objset_spa(ra->os), 2056eb633035STom Caputi drrw->drr_object, byteorder, drrw->drr_salt, 2057eb633035STom Caputi drrw->drr_iv, drrw->drr_mac, drrw->drr_type, 2058eb633035STom Caputi drrw->drr_compressed_size, drrw->drr_logical_size, 2059eb633035STom Caputi drrw->drr_compressiontype); 2060eb633035STom Caputi } else if (DRR_WRITE_COMPRESSED(drrw)) { 20610fa1b3ccSPaul Dagnelie ASSERT3U(drrw->drr_compressed_size, >, 0); 20620fa1b3ccSPaul Dagnelie ASSERT3U(drrw->drr_logical_size, >=, 20630fa1b3ccSPaul Dagnelie drrw->drr_compressed_size); 20640fa1b3ccSPaul Dagnelie ASSERT(!is_meta); 20650fa1b3ccSPaul Dagnelie abuf = arc_loan_compressed_buf( 20660fa1b3ccSPaul Dagnelie dmu_objset_spa(ra->os), 20670fa1b3ccSPaul Dagnelie drrw->drr_compressed_size, drrw->drr_logical_size, 20680fa1b3ccSPaul Dagnelie drrw->drr_compressiontype); 20690fa1b3ccSPaul Dagnelie } else { 20700fa1b3ccSPaul Dagnelie abuf = arc_loan_buf(dmu_objset_spa(ra->os), 20710fa1b3ccSPaul Dagnelie is_meta, drrw->drr_logical_size); 20720fa1b3ccSPaul Dagnelie } 20730fa1b3ccSPaul Dagnelie 20740fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, 20750fa1b3ccSPaul Dagnelie DRR_WRITE_PAYLOAD_SIZE(drrw), abuf->b_data); 20760fa1b3ccSPaul Dagnelie if (err != 0) { 20770fa1b3ccSPaul Dagnelie dmu_return_arcbuf(abuf); 20780fa1b3ccSPaul Dagnelie return (err); 20790fa1b3ccSPaul Dagnelie } 2080eb633035STom Caputi ra->rrd->arc_buf = abuf; 20810fa1b3ccSPaul Dagnelie receive_read_prefetch(ra, drrw->drr_object, drrw->drr_offset, 20820fa1b3ccSPaul Dagnelie drrw->drr_logical_size); 20830fa1b3ccSPaul Dagnelie return (err); 20840fa1b3ccSPaul Dagnelie } 20850fa1b3ccSPaul Dagnelie case DRR_WRITE_BYREF: 20860fa1b3ccSPaul Dagnelie { 20870fa1b3ccSPaul Dagnelie struct drr_write_byref *drrwb = 20880fa1b3ccSPaul Dagnelie &ra->rrd->header.drr_u.drr_write_byref; 20890fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 20900fa1b3ccSPaul Dagnelie receive_read_prefetch(ra, drrwb->drr_object, drrwb->drr_offset, 20910fa1b3ccSPaul Dagnelie drrwb->drr_length); 20920fa1b3ccSPaul Dagnelie return (err); 20930fa1b3ccSPaul Dagnelie } 20940fa1b3ccSPaul Dagnelie case DRR_WRITE_EMBEDDED: 20950fa1b3ccSPaul Dagnelie { 20960fa1b3ccSPaul Dagnelie struct drr_write_embedded *drrwe = 20970fa1b3ccSPaul Dagnelie &ra->rrd->header.drr_u.drr_write_embedded; 20980fa1b3ccSPaul Dagnelie uint32_t size = P2ROUNDUP(drrwe->drr_psize, 8); 20990fa1b3ccSPaul Dagnelie void *buf = kmem_zalloc(size, KM_SLEEP); 21000fa1b3ccSPaul Dagnelie 21010fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, size, buf); 21020fa1b3ccSPaul Dagnelie if (err != 0) { 21030fa1b3ccSPaul Dagnelie kmem_free(buf, size); 21040fa1b3ccSPaul Dagnelie return (err); 21050fa1b3ccSPaul Dagnelie } 21060fa1b3ccSPaul Dagnelie 21070fa1b3ccSPaul Dagnelie receive_read_prefetch(ra, drrwe->drr_object, drrwe->drr_offset, 21080fa1b3ccSPaul Dagnelie drrwe->drr_length); 21090fa1b3ccSPaul Dagnelie return (err); 21100fa1b3ccSPaul Dagnelie } 21110fa1b3ccSPaul Dagnelie case DRR_FREE: 21120fa1b3ccSPaul Dagnelie { 21130fa1b3ccSPaul Dagnelie /* 21140fa1b3ccSPaul Dagnelie * It might be beneficial to prefetch indirect blocks here, but 21150fa1b3ccSPaul Dagnelie * we don't really have the data to decide for sure. 21160fa1b3ccSPaul Dagnelie */ 21170fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(ra, 0, NULL); 21180fa1b3ccSPaul Dagnelie return (err); 21190fa1b3ccSPaul Dagnelie } 21200fa1b3ccSPaul Dagnelie case DRR_END: 21210fa1b3ccSPaul Dagnelie { 21220fa1b3ccSPaul Dagnelie struct drr_end *drre = &ra->rrd->header.drr_u.drr_end; 21230fa1b3ccSPaul Dagnelie if (!ZIO_CHECKSUM_EQUAL(ra->prev_cksum, drre->drr_checksum)) 21240fa1b3ccSPaul Dagnelie return (SET_ERROR(ECKSUM)); 21250fa1b3ccSPaul Dagnelie return (0); 21260fa1b3ccSPaul Dagnelie } 21270fa1b3ccSPaul Dagnelie case DRR_SPILL: 21280fa1b3ccSPaul Dagnelie { 21290fa1b3ccSPaul Dagnelie struct drr_spill *drrs = &ra->rrd->header.drr_u.drr_spill; 2130eb633035STom Caputi arc_buf_t *abuf; 2131eb633035STom Caputi int len = DRR_SPILL_PAYLOAD_SIZE(drrs); 2132eb633035STom Caputi 2133eb633035STom Caputi /* DRR_SPILL records are either raw or uncompressed */ 2134eb633035STom Caputi if (ra->raw) { 2135eb633035STom Caputi boolean_t byteorder = ZFS_HOST_BYTEORDER ^ 2136eb633035STom Caputi !!DRR_IS_RAW_BYTESWAPPED(drrs->drr_flags) ^ 2137eb633035STom Caputi ra->byteswap; 2138eb633035STom Caputi 2139eb633035STom Caputi abuf = arc_loan_raw_buf(dmu_objset_spa(ra->os), 2140eb633035STom Caputi dmu_objset_id(ra->os), byteorder, drrs->drr_salt, 2141eb633035STom Caputi drrs->drr_iv, drrs->drr_mac, drrs->drr_type, 2142eb633035STom Caputi drrs->drr_compressed_size, drrs->drr_length, 2143eb633035STom Caputi drrs->drr_compressiontype); 2144eb633035STom Caputi } else { 2145eb633035STom Caputi abuf = arc_loan_buf(dmu_objset_spa(ra->os), 2146eb633035STom Caputi DMU_OT_IS_METADATA(drrs->drr_type), 2147eb633035STom Caputi drrs->drr_length); 2148eb633035STom Caputi } 2149eb633035STom Caputi 2150eb633035STom Caputi err = receive_read_payload_and_next_header(ra, len, 2151eb633035STom Caputi abuf->b_data); 2152eb633035STom Caputi if (err != 0) { 2153eb633035STom Caputi dmu_return_arcbuf(abuf); 2154eb633035STom Caputi return (err); 2155eb633035STom Caputi } 2156eb633035STom Caputi ra->rrd->arc_buf = abuf; 2157eb633035STom Caputi return (err); 2158eb633035STom Caputi } 2159eb633035STom Caputi case DRR_OBJECT_RANGE: 2160eb633035STom Caputi { 2161eb633035STom Caputi err = receive_read_payload_and_next_header(ra, 0, NULL); 21620fa1b3ccSPaul Dagnelie return (err); 21630fa1b3ccSPaul Dagnelie } 21640fa1b3ccSPaul Dagnelie default: 21650fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 21660fa1b3ccSPaul Dagnelie } 21670fa1b3ccSPaul Dagnelie } 21680fa1b3ccSPaul Dagnelie 21690fa1b3ccSPaul Dagnelie /* 21700fa1b3ccSPaul Dagnelie * Commit the records to the pool. 21710fa1b3ccSPaul Dagnelie */ 21720fa1b3ccSPaul Dagnelie static int 21730fa1b3ccSPaul Dagnelie receive_process_record(struct receive_writer_arg *rwa, 21740fa1b3ccSPaul Dagnelie struct receive_record_arg *rrd) 21750fa1b3ccSPaul Dagnelie { 21760fa1b3ccSPaul Dagnelie int err; 21770fa1b3ccSPaul Dagnelie 21780fa1b3ccSPaul Dagnelie /* Processing in order, therefore bytes_read should be increasing. */ 21790fa1b3ccSPaul Dagnelie ASSERT3U(rrd->bytes_read, >=, rwa->bytes_read); 21800fa1b3ccSPaul Dagnelie rwa->bytes_read = rrd->bytes_read; 21810fa1b3ccSPaul Dagnelie 21820fa1b3ccSPaul Dagnelie switch (rrd->header.drr_type) { 21830fa1b3ccSPaul Dagnelie case DRR_OBJECT: 21840fa1b3ccSPaul Dagnelie { 21850fa1b3ccSPaul Dagnelie struct drr_object *drro = &rrd->header.drr_u.drr_object; 21860fa1b3ccSPaul Dagnelie err = receive_object(rwa, drro, rrd->payload); 21870fa1b3ccSPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 21880fa1b3ccSPaul Dagnelie rrd->payload = NULL; 21890fa1b3ccSPaul Dagnelie return (err); 21900fa1b3ccSPaul Dagnelie } 21910fa1b3ccSPaul Dagnelie case DRR_FREEOBJECTS: 21920fa1b3ccSPaul Dagnelie { 21930fa1b3ccSPaul Dagnelie struct drr_freeobjects *drrfo = 21940fa1b3ccSPaul Dagnelie &rrd->header.drr_u.drr_freeobjects; 21950fa1b3ccSPaul Dagnelie return (receive_freeobjects(rwa, drrfo)); 21960fa1b3ccSPaul Dagnelie } 21970fa1b3ccSPaul Dagnelie case DRR_WRITE: 21980fa1b3ccSPaul Dagnelie { 21990fa1b3ccSPaul Dagnelie struct drr_write *drrw = &rrd->header.drr_u.drr_write; 2200eb633035STom Caputi err = receive_write(rwa, drrw, rrd->arc_buf); 22010fa1b3ccSPaul Dagnelie /* if receive_write() is successful, it consumes the arc_buf */ 22020fa1b3ccSPaul Dagnelie if (err != 0) 2203eb633035STom Caputi dmu_return_arcbuf(rrd->arc_buf); 2204eb633035STom Caputi rrd->arc_buf = NULL; 22050fa1b3ccSPaul Dagnelie rrd->payload = NULL; 22060fa1b3ccSPaul Dagnelie return (err); 22070fa1b3ccSPaul Dagnelie } 22080fa1b3ccSPaul Dagnelie case DRR_WRITE_BYREF: 22090fa1b3ccSPaul Dagnelie { 22100fa1b3ccSPaul Dagnelie struct drr_write_byref *drrwbr = 22110fa1b3ccSPaul Dagnelie &rrd->header.drr_u.drr_write_byref; 22120fa1b3ccSPaul Dagnelie return (receive_write_byref(rwa, drrwbr)); 22130fa1b3ccSPaul Dagnelie } 22140fa1b3ccSPaul Dagnelie case DRR_WRITE_EMBEDDED: 22150fa1b3ccSPaul Dagnelie { 22160fa1b3ccSPaul Dagnelie struct drr_write_embedded *drrwe = 22170fa1b3ccSPaul Dagnelie &rrd->header.drr_u.drr_write_embedded; 22180fa1b3ccSPaul Dagnelie err = receive_write_embedded(rwa, drrwe, rrd->payload); 22190fa1b3ccSPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 22200fa1b3ccSPaul Dagnelie rrd->payload = NULL; 22210fa1b3ccSPaul Dagnelie return (err); 22220fa1b3ccSPaul Dagnelie } 22230fa1b3ccSPaul Dagnelie case DRR_FREE: 22240fa1b3ccSPaul Dagnelie { 22250fa1b3ccSPaul Dagnelie struct drr_free *drrf = &rrd->header.drr_u.drr_free; 22260fa1b3ccSPaul Dagnelie return (receive_free(rwa, drrf)); 22270fa1b3ccSPaul Dagnelie } 22280fa1b3ccSPaul Dagnelie case DRR_SPILL: 22290fa1b3ccSPaul Dagnelie { 22300fa1b3ccSPaul Dagnelie struct drr_spill *drrs = &rrd->header.drr_u.drr_spill; 2231eb633035STom Caputi err = receive_spill(rwa, drrs, rrd->arc_buf); 2232eb633035STom Caputi /* if receive_spill() is successful, it consumes the arc_buf */ 2233eb633035STom Caputi if (err != 0) 2234eb633035STom Caputi dmu_return_arcbuf(rrd->arc_buf); 2235eb633035STom Caputi rrd->arc_buf = NULL; 22360fa1b3ccSPaul Dagnelie rrd->payload = NULL; 22370fa1b3ccSPaul Dagnelie return (err); 22380fa1b3ccSPaul Dagnelie } 2239eb633035STom Caputi case DRR_OBJECT_RANGE: 2240eb633035STom Caputi { 2241eb633035STom Caputi struct drr_object_range *drror = 2242eb633035STom Caputi &rrd->header.drr_u.drr_object_range; 2243eb633035STom Caputi return (receive_object_range(rwa, drror)); 2244eb633035STom Caputi } 22450fa1b3ccSPaul Dagnelie default: 22460fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 22470fa1b3ccSPaul Dagnelie } 22480fa1b3ccSPaul Dagnelie } 22490fa1b3ccSPaul Dagnelie 22500fa1b3ccSPaul Dagnelie /* 22510fa1b3ccSPaul Dagnelie * dmu_recv_stream's worker thread; pull records off the queue, and then call 22520fa1b3ccSPaul Dagnelie * receive_process_record When we're done, signal the main thread and exit. 22530fa1b3ccSPaul Dagnelie */ 22540fa1b3ccSPaul Dagnelie static void 22550fa1b3ccSPaul Dagnelie receive_writer_thread(void *arg) 22560fa1b3ccSPaul Dagnelie { 22570fa1b3ccSPaul Dagnelie struct receive_writer_arg *rwa = arg; 22580fa1b3ccSPaul Dagnelie struct receive_record_arg *rrd; 22590fa1b3ccSPaul Dagnelie for (rrd = bqueue_dequeue(&rwa->q); !rrd->eos_marker; 22600fa1b3ccSPaul Dagnelie rrd = bqueue_dequeue(&rwa->q)) { 22610fa1b3ccSPaul Dagnelie /* 22620fa1b3ccSPaul Dagnelie * If there's an error, the main thread will stop putting things 22630fa1b3ccSPaul Dagnelie * on the queue, but we need to clear everything in it before we 22640fa1b3ccSPaul Dagnelie * can exit. 22650fa1b3ccSPaul Dagnelie */ 22660fa1b3ccSPaul Dagnelie if (rwa->err == 0) { 22670fa1b3ccSPaul Dagnelie rwa->err = receive_process_record(rwa, rrd); 2268eb633035STom Caputi } else if (rrd->arc_buf != NULL) { 2269eb633035STom Caputi dmu_return_arcbuf(rrd->arc_buf); 2270eb633035STom Caputi rrd->arc_buf = NULL; 22710fa1b3ccSPaul Dagnelie rrd->payload = NULL; 22720fa1b3ccSPaul Dagnelie } else if (rrd->payload != NULL) { 22730fa1b3ccSPaul Dagnelie kmem_free(rrd->payload, rrd->payload_size); 22740fa1b3ccSPaul Dagnelie rrd->payload = NULL; 22750fa1b3ccSPaul Dagnelie } 22760fa1b3ccSPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 22770fa1b3ccSPaul Dagnelie } 22780fa1b3ccSPaul Dagnelie kmem_free(rrd, sizeof (*rrd)); 22790fa1b3ccSPaul Dagnelie mutex_enter(&rwa->mutex); 22800fa1b3ccSPaul Dagnelie rwa->done = B_TRUE; 22810fa1b3ccSPaul Dagnelie cv_signal(&rwa->cv); 22820fa1b3ccSPaul Dagnelie mutex_exit(&rwa->mutex); 22830fa1b3ccSPaul Dagnelie thread_exit(); 22840fa1b3ccSPaul Dagnelie } 22850fa1b3ccSPaul Dagnelie 22860fa1b3ccSPaul Dagnelie static int 22870fa1b3ccSPaul Dagnelie resume_check(struct receive_arg *ra, nvlist_t *begin_nvl) 22880fa1b3ccSPaul Dagnelie { 22890fa1b3ccSPaul Dagnelie uint64_t val; 22900fa1b3ccSPaul Dagnelie objset_t *mos = dmu_objset_pool(ra->os)->dp_meta_objset; 22910fa1b3ccSPaul Dagnelie uint64_t dsobj = dmu_objset_id(ra->os); 22920fa1b3ccSPaul Dagnelie uint64_t resume_obj, resume_off; 22930fa1b3ccSPaul Dagnelie 22940fa1b3ccSPaul Dagnelie if (nvlist_lookup_uint64(begin_nvl, 22950fa1b3ccSPaul Dagnelie "resume_object", &resume_obj) != 0 || 22960fa1b3ccSPaul Dagnelie nvlist_lookup_uint64(begin_nvl, 22970fa1b3ccSPaul Dagnelie "resume_offset", &resume_off) != 0) { 22980fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 22990fa1b3ccSPaul Dagnelie } 23000fa1b3ccSPaul Dagnelie VERIFY0(zap_lookup(mos, dsobj, 23010fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_OBJECT, sizeof (val), 1, &val)); 23020fa1b3ccSPaul Dagnelie if (resume_obj != val) 23030fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 23040fa1b3ccSPaul Dagnelie VERIFY0(zap_lookup(mos, dsobj, 23050fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_OFFSET, sizeof (val), 1, &val)); 23060fa1b3ccSPaul Dagnelie if (resume_off != val) 23070fa1b3ccSPaul Dagnelie return (SET_ERROR(EINVAL)); 23080fa1b3ccSPaul Dagnelie 23090fa1b3ccSPaul Dagnelie return (0); 23100fa1b3ccSPaul Dagnelie } 23110fa1b3ccSPaul Dagnelie 23120fa1b3ccSPaul Dagnelie /* 23130fa1b3ccSPaul Dagnelie * Read in the stream's records, one by one, and apply them to the pool. There 23140fa1b3ccSPaul Dagnelie * are two threads involved; the thread that calls this function will spin up a 23150fa1b3ccSPaul Dagnelie * worker thread, read the records off the stream one by one, and issue 23160fa1b3ccSPaul Dagnelie * prefetches for any necessary indirect blocks. It will then push the records 23170fa1b3ccSPaul Dagnelie * onto an internal blocking queue. The worker thread will pull the records off 23180fa1b3ccSPaul Dagnelie * the queue, and actually write the data into the DMU. This way, the worker 23190fa1b3ccSPaul Dagnelie * thread doesn't have to wait for reads to complete, since everything it needs 23200fa1b3ccSPaul Dagnelie * (the indirect blocks) will be prefetched. 23210fa1b3ccSPaul Dagnelie * 23220fa1b3ccSPaul Dagnelie * NB: callers *must* call dmu_recv_end() if this succeeds. 23230fa1b3ccSPaul Dagnelie */ 23240fa1b3ccSPaul Dagnelie int 23250fa1b3ccSPaul Dagnelie dmu_recv_stream(dmu_recv_cookie_t *drc, vnode_t *vp, offset_t *voffp, 23260fa1b3ccSPaul Dagnelie int cleanup_fd, uint64_t *action_handlep) 23270fa1b3ccSPaul Dagnelie { 23280fa1b3ccSPaul Dagnelie int err = 0; 23290fa1b3ccSPaul Dagnelie struct receive_arg ra = { 0 }; 23300fa1b3ccSPaul Dagnelie struct receive_writer_arg rwa = { 0 }; 23310fa1b3ccSPaul Dagnelie int featureflags; 23320fa1b3ccSPaul Dagnelie nvlist_t *begin_nvl = NULL; 23330fa1b3ccSPaul Dagnelie 23340fa1b3ccSPaul Dagnelie ra.byteswap = drc->drc_byteswap; 2335eb633035STom Caputi ra.raw = drc->drc_raw; 23360fa1b3ccSPaul Dagnelie ra.cksum = drc->drc_cksum; 23370fa1b3ccSPaul Dagnelie ra.vp = vp; 23380fa1b3ccSPaul Dagnelie ra.voff = *voffp; 23390fa1b3ccSPaul Dagnelie 23400fa1b3ccSPaul Dagnelie if (dsl_dataset_is_zapified(drc->drc_ds)) { 23410fa1b3ccSPaul Dagnelie (void) zap_lookup(drc->drc_ds->ds_dir->dd_pool->dp_meta_objset, 23420fa1b3ccSPaul Dagnelie drc->drc_ds->ds_object, DS_FIELD_RESUME_BYTES, 23430fa1b3ccSPaul Dagnelie sizeof (ra.bytes_read), 1, &ra.bytes_read); 23440fa1b3ccSPaul Dagnelie } 23450fa1b3ccSPaul Dagnelie 23460fa1b3ccSPaul Dagnelie objlist_create(&ra.ignore_objlist); 23470fa1b3ccSPaul Dagnelie 23480fa1b3ccSPaul Dagnelie /* these were verified in dmu_recv_begin */ 23490fa1b3ccSPaul Dagnelie ASSERT3U(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo), ==, 23500fa1b3ccSPaul Dagnelie DMU_SUBSTREAM); 23510fa1b3ccSPaul Dagnelie ASSERT3U(drc->drc_drrb->drr_type, <, DMU_OST_NUMTYPES); 23520fa1b3ccSPaul Dagnelie 23530fa1b3ccSPaul Dagnelie /* 23540fa1b3ccSPaul Dagnelie * Open the objset we are modifying. 23550fa1b3ccSPaul Dagnelie */ 23560fa1b3ccSPaul Dagnelie VERIFY0(dmu_objset_from_ds(drc->drc_ds, &ra.os)); 23570fa1b3ccSPaul Dagnelie 23580fa1b3ccSPaul Dagnelie ASSERT(dsl_dataset_phys(drc->drc_ds)->ds_flags & DS_FLAG_INCONSISTENT); 23590fa1b3ccSPaul Dagnelie 23600fa1b3ccSPaul Dagnelie featureflags = DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo); 2361eb633035STom Caputi ra.featureflags = featureflags; 2362eb633035STom Caputi 2363eb633035STom Caputi ASSERT0(ra.os->os_encrypted && 2364eb633035STom Caputi (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)); 23650fa1b3ccSPaul Dagnelie 23660fa1b3ccSPaul Dagnelie /* if this stream is dedup'ed, set up the avl tree for guid mapping */ 23670fa1b3ccSPaul Dagnelie if (featureflags & DMU_BACKUP_FEATURE_DEDUP) { 23680fa1b3ccSPaul Dagnelie minor_t minor; 23690fa1b3ccSPaul Dagnelie 23700fa1b3ccSPaul Dagnelie if (cleanup_fd == -1) { 2371eb633035STom Caputi err = SET_ERROR(EBADF); 23720fa1b3ccSPaul Dagnelie goto out; 23730fa1b3ccSPaul Dagnelie } 2374eb633035STom Caputi err = zfs_onexit_fd_hold(cleanup_fd, &minor); 2375eb633035STom Caputi if (err != 0) { 23760fa1b3ccSPaul Dagnelie cleanup_fd = -1; 23770fa1b3ccSPaul Dagnelie goto out; 23780fa1b3ccSPaul Dagnelie } 23790fa1b3ccSPaul Dagnelie 23800fa1b3ccSPaul Dagnelie if (*action_handlep == 0) { 23810fa1b3ccSPaul Dagnelie rwa.guid_to_ds_map = 23820fa1b3ccSPaul Dagnelie kmem_alloc(sizeof (avl_tree_t), KM_SLEEP); 23830fa1b3ccSPaul Dagnelie avl_create(rwa.guid_to_ds_map, guid_compare, 23840fa1b3ccSPaul Dagnelie sizeof (guid_map_entry_t), 23850fa1b3ccSPaul Dagnelie offsetof(guid_map_entry_t, avlnode)); 23860fa1b3ccSPaul Dagnelie err = zfs_onexit_add_cb(minor, 23870fa1b3ccSPaul Dagnelie free_guid_map_onexit, rwa.guid_to_ds_map, 23880fa1b3ccSPaul Dagnelie action_handlep); 2389eb633035STom Caputi if (err != 0) 23900fa1b3ccSPaul Dagnelie goto out; 23910fa1b3ccSPaul Dagnelie } else { 23920fa1b3ccSPaul Dagnelie err = zfs_onexit_cb_data(minor, *action_handlep, 23930fa1b3ccSPaul Dagnelie (void **)&rwa.guid_to_ds_map); 2394eb633035STom Caputi if (err != 0) 23950fa1b3ccSPaul Dagnelie goto out; 23960fa1b3ccSPaul Dagnelie } 23970fa1b3ccSPaul Dagnelie 23980fa1b3ccSPaul Dagnelie drc->drc_guid_to_ds_map = rwa.guid_to_ds_map; 23990fa1b3ccSPaul Dagnelie } 24000fa1b3ccSPaul Dagnelie 24010fa1b3ccSPaul Dagnelie uint32_t payloadlen = drc->drc_drr_begin->drr_payloadlen; 24020fa1b3ccSPaul Dagnelie void *payload = NULL; 24030fa1b3ccSPaul Dagnelie if (payloadlen != 0) 24040fa1b3ccSPaul Dagnelie payload = kmem_alloc(payloadlen, KM_SLEEP); 24050fa1b3ccSPaul Dagnelie 24060fa1b3ccSPaul Dagnelie err = receive_read_payload_and_next_header(&ra, payloadlen, payload); 24070fa1b3ccSPaul Dagnelie if (err != 0) { 24080fa1b3ccSPaul Dagnelie if (payloadlen != 0) 24090fa1b3ccSPaul Dagnelie kmem_free(payload, payloadlen); 24100fa1b3ccSPaul Dagnelie goto out; 24110fa1b3ccSPaul Dagnelie } 24120fa1b3ccSPaul Dagnelie if (payloadlen != 0) { 24130fa1b3ccSPaul Dagnelie err = nvlist_unpack(payload, payloadlen, &begin_nvl, KM_SLEEP); 24140fa1b3ccSPaul Dagnelie kmem_free(payload, payloadlen); 24150fa1b3ccSPaul Dagnelie if (err != 0) 24160fa1b3ccSPaul Dagnelie goto out; 24170fa1b3ccSPaul Dagnelie } 24180fa1b3ccSPaul Dagnelie 2419eb633035STom Caputi /* handle DSL encryption key payload */ 2420eb633035STom Caputi if (featureflags & DMU_BACKUP_FEATURE_RAW) { 2421eb633035STom Caputi nvlist_t *keynvl = NULL; 2422eb633035STom Caputi 2423eb633035STom Caputi ASSERT(ra.os->os_encrypted); 2424eb633035STom Caputi ASSERT(drc->drc_raw); 2425eb633035STom Caputi 2426eb633035STom Caputi err = nvlist_lookup_nvlist(begin_nvl, "crypt_keydata", &keynvl); 2427eb633035STom Caputi if (err != 0) 2428eb633035STom Caputi goto out; 2429eb633035STom Caputi 2430eb633035STom Caputi /* 2431eb633035STom Caputi * If this is a new dataset we set the key immediately. 2432eb633035STom Caputi * Otherwise we don't want to change the key until we 2433eb633035STom Caputi * are sure the rest of the receive succeeded so we stash 2434eb633035STom Caputi * the keynvl away until then. 2435eb633035STom Caputi */ 2436eb633035STom Caputi err = dsl_crypto_recv_raw(spa_name(ra.os->os_spa), 2437eb633035STom Caputi drc->drc_ds->ds_object, drc->drc_fromsnapobj, 2438eb633035STom Caputi drc->drc_drrb->drr_type, keynvl, drc->drc_newfs); 2439eb633035STom Caputi if (err != 0) 2440eb633035STom Caputi goto out; 2441eb633035STom Caputi 2442eb633035STom Caputi /* see comment in dmu_recv_end_sync() */ 2443eb633035STom Caputi drc->drc_ivset_guid = 0; 2444eb633035STom Caputi (void) nvlist_lookup_uint64(keynvl, "to_ivset_guid", 2445eb633035STom Caputi &drc->drc_ivset_guid); 2446eb633035STom Caputi 2447eb633035STom Caputi if (!drc->drc_newfs) 2448eb633035STom Caputi drc->drc_keynvl = fnvlist_dup(keynvl); 2449eb633035STom Caputi } 2450eb633035STom Caputi 24510fa1b3ccSPaul Dagnelie if (featureflags & DMU_BACKUP_FEATURE_RESUMING) { 24520fa1b3ccSPaul Dagnelie err = resume_check(&ra, begin_nvl); 24530fa1b3ccSPaul Dagnelie if (err != 0) 24540fa1b3ccSPaul Dagnelie goto out; 24550fa1b3ccSPaul Dagnelie } 24560fa1b3ccSPaul Dagnelie 24570fa1b3ccSPaul Dagnelie (void) bqueue_init(&rwa.q, zfs_recv_queue_length, 24580fa1b3ccSPaul Dagnelie offsetof(struct receive_record_arg, node)); 24590fa1b3ccSPaul Dagnelie cv_init(&rwa.cv, NULL, CV_DEFAULT, NULL); 24600fa1b3ccSPaul Dagnelie mutex_init(&rwa.mutex, NULL, MUTEX_DEFAULT, NULL); 24610fa1b3ccSPaul Dagnelie rwa.os = ra.os; 24620fa1b3ccSPaul Dagnelie rwa.byteswap = drc->drc_byteswap; 24630fa1b3ccSPaul Dagnelie rwa.resumable = drc->drc_resumable; 2464eb633035STom Caputi rwa.raw = drc->drc_raw; 2465eb633035STom Caputi rwa.spill = drc->drc_spill; 2466eb633035STom Caputi rwa.os->os_raw_receive = drc->drc_raw; 24670fa1b3ccSPaul Dagnelie 24680fa1b3ccSPaul Dagnelie (void) thread_create(NULL, 0, receive_writer_thread, &rwa, 0, curproc, 24690fa1b3ccSPaul Dagnelie TS_RUN, minclsyspri); 24700fa1b3ccSPaul Dagnelie /* 24710fa1b3ccSPaul Dagnelie * We're reading rwa.err without locks, which is safe since we are the 24720fa1b3ccSPaul Dagnelie * only reader, and the worker thread is the only writer. It's ok if we 24730fa1b3ccSPaul Dagnelie * miss a write for an iteration or two of the loop, since the writer 24740fa1b3ccSPaul Dagnelie * thread will keep freeing records we send it until we send it an eos 24750fa1b3ccSPaul Dagnelie * marker. 24760fa1b3ccSPaul Dagnelie * 24770fa1b3ccSPaul Dagnelie * We can leave this loop in 3 ways: First, if rwa.err is 24780fa1b3ccSPaul Dagnelie * non-zero. In that case, the writer thread will free the rrd we just 24790fa1b3ccSPaul Dagnelie * pushed. Second, if we're interrupted; in that case, either it's the 24800fa1b3ccSPaul Dagnelie * first loop and ra.rrd was never allocated, or it's later, and ra.rrd 24810fa1b3ccSPaul Dagnelie * has been handed off to the writer thread who will free it. Finally, 24820fa1b3ccSPaul Dagnelie * if receive_read_record fails or we're at the end of the stream, then 24830fa1b3ccSPaul Dagnelie * we free ra.rrd and exit. 24840fa1b3ccSPaul Dagnelie */ 24850fa1b3ccSPaul Dagnelie while (rwa.err == 0) { 24860fa1b3ccSPaul Dagnelie if (issig(JUSTLOOKING) && issig(FORREAL)) { 24870fa1b3ccSPaul Dagnelie err = SET_ERROR(EINTR); 24880fa1b3ccSPaul Dagnelie break; 24890fa1b3ccSPaul Dagnelie } 24900fa1b3ccSPaul Dagnelie 24910fa1b3ccSPaul Dagnelie ASSERT3P(ra.rrd, ==, NULL); 24920fa1b3ccSPaul Dagnelie ra.rrd = ra.next_rrd; 24930fa1b3ccSPaul Dagnelie ra.next_rrd = NULL; 24940fa1b3ccSPaul Dagnelie /* Allocates and loads header into ra.next_rrd */ 24950fa1b3ccSPaul Dagnelie err = receive_read_record(&ra); 24960fa1b3ccSPaul Dagnelie 24970fa1b3ccSPaul Dagnelie if (ra.rrd->header.drr_type == DRR_END || err != 0) { 24980fa1b3ccSPaul Dagnelie kmem_free(ra.rrd, sizeof (*ra.rrd)); 24990fa1b3ccSPaul Dagnelie ra.rrd = NULL; 25000fa1b3ccSPaul Dagnelie break; 25010fa1b3ccSPaul Dagnelie } 25020fa1b3ccSPaul Dagnelie 25030fa1b3ccSPaul Dagnelie bqueue_enqueue(&rwa.q, ra.rrd, 25040fa1b3ccSPaul Dagnelie sizeof (struct receive_record_arg) + ra.rrd->payload_size); 25050fa1b3ccSPaul Dagnelie ra.rrd = NULL; 25060fa1b3ccSPaul Dagnelie } 2507eb633035STom Caputi ASSERT3P(ra.rrd, ==, NULL); 2508eb633035STom Caputi ra.rrd = kmem_zalloc(sizeof (*ra.rrd), KM_SLEEP); 2509eb633035STom Caputi ra.rrd->eos_marker = B_TRUE; 2510eb633035STom Caputi bqueue_enqueue(&rwa.q, ra.rrd, 1); 25110fa1b3ccSPaul Dagnelie 25120fa1b3ccSPaul Dagnelie mutex_enter(&rwa.mutex); 25130fa1b3ccSPaul Dagnelie while (!rwa.done) { 25140fa1b3ccSPaul Dagnelie cv_wait(&rwa.cv, &rwa.mutex); 25150fa1b3ccSPaul Dagnelie } 25160fa1b3ccSPaul Dagnelie mutex_exit(&rwa.mutex); 25170fa1b3ccSPaul Dagnelie 25180fa1b3ccSPaul Dagnelie /* 25190fa1b3ccSPaul Dagnelie * If we are receiving a full stream as a clone, all object IDs which 25200fa1b3ccSPaul Dagnelie * are greater than the maximum ID referenced in the stream are 25210fa1b3ccSPaul Dagnelie * by definition unused and must be freed. Note that it's possible that 25220fa1b3ccSPaul Dagnelie * we've resumed this send and the first record we received was the END 25230fa1b3ccSPaul Dagnelie * record. In that case, max_object would be 0, but we shouldn't start 25240fa1b3ccSPaul Dagnelie * freeing all objects from there; instead we should start from the 25250fa1b3ccSPaul Dagnelie * resumeobj. 25260fa1b3ccSPaul Dagnelie */ 25270fa1b3ccSPaul Dagnelie if (drc->drc_clone && drc->drc_drrb->drr_fromguid == 0) { 25280fa1b3ccSPaul Dagnelie uint64_t obj; 25290fa1b3ccSPaul Dagnelie if (nvlist_lookup_uint64(begin_nvl, "resume_object", &obj) != 0) 25300fa1b3ccSPaul Dagnelie obj = 0; 25310fa1b3ccSPaul Dagnelie if (rwa.max_object > obj) 25320fa1b3ccSPaul Dagnelie obj = rwa.max_object; 25330fa1b3ccSPaul Dagnelie obj++; 25340fa1b3ccSPaul Dagnelie int free_err = 0; 25350fa1b3ccSPaul Dagnelie int next_err = 0; 25360fa1b3ccSPaul Dagnelie 25370fa1b3ccSPaul Dagnelie while (next_err == 0) { 25380fa1b3ccSPaul Dagnelie free_err = dmu_free_long_object(rwa.os, obj); 25390fa1b3ccSPaul Dagnelie if (free_err != 0 && free_err != ENOENT) 25400fa1b3ccSPaul Dagnelie break; 25410fa1b3ccSPaul Dagnelie 25420fa1b3ccSPaul Dagnelie next_err = dmu_object_next(rwa.os, &obj, FALSE, 0); 25430fa1b3ccSPaul Dagnelie } 25440fa1b3ccSPaul Dagnelie 25450fa1b3ccSPaul Dagnelie if (err == 0) { 25460fa1b3ccSPaul Dagnelie if (free_err != 0 && free_err != ENOENT) 25470fa1b3ccSPaul Dagnelie err = free_err; 25480fa1b3ccSPaul Dagnelie else if (next_err != ESRCH) 25490fa1b3ccSPaul Dagnelie err = next_err; 25500fa1b3ccSPaul Dagnelie } 25510fa1b3ccSPaul Dagnelie } 25520fa1b3ccSPaul Dagnelie 25530fa1b3ccSPaul Dagnelie cv_destroy(&rwa.cv); 25540fa1b3ccSPaul Dagnelie mutex_destroy(&rwa.mutex); 25550fa1b3ccSPaul Dagnelie bqueue_destroy(&rwa.q); 25560fa1b3ccSPaul Dagnelie if (err == 0) 25570fa1b3ccSPaul Dagnelie err = rwa.err; 25580fa1b3ccSPaul Dagnelie 25590fa1b3ccSPaul Dagnelie out: 2560eb633035STom Caputi /* 2561eb633035STom Caputi * If we hit an error before we started the receive_writer_thread 2562eb633035STom Caputi * we need to clean up the next_rrd we create by processing the 2563eb633035STom Caputi * DRR_BEGIN record. 2564eb633035STom Caputi */ 2565eb633035STom Caputi if (ra.next_rrd != NULL) 2566eb633035STom Caputi kmem_free(ra.next_rrd, sizeof (*ra.next_rrd)); 2567eb633035STom Caputi 25680fa1b3ccSPaul Dagnelie nvlist_free(begin_nvl); 25690fa1b3ccSPaul Dagnelie if ((featureflags & DMU_BACKUP_FEATURE_DEDUP) && (cleanup_fd != -1)) 25700fa1b3ccSPaul Dagnelie zfs_onexit_fd_rele(cleanup_fd); 25710fa1b3ccSPaul Dagnelie 25720fa1b3ccSPaul Dagnelie if (err != 0) { 25730fa1b3ccSPaul Dagnelie /* 25740fa1b3ccSPaul Dagnelie * Clean up references. If receive is not resumable, 25750fa1b3ccSPaul Dagnelie * destroy what we created, so we don't leave it in 25760fa1b3ccSPaul Dagnelie * the inconsistent state. 25770fa1b3ccSPaul Dagnelie */ 25780fa1b3ccSPaul Dagnelie dmu_recv_cleanup_ds(drc); 2579eb633035STom Caputi nvlist_free(drc->drc_keynvl); 25800fa1b3ccSPaul Dagnelie } 25810fa1b3ccSPaul Dagnelie 25820fa1b3ccSPaul Dagnelie *voffp = ra.voff; 25830fa1b3ccSPaul Dagnelie objlist_destroy(&ra.ignore_objlist); 25840fa1b3ccSPaul Dagnelie return (err); 25850fa1b3ccSPaul Dagnelie } 25860fa1b3ccSPaul Dagnelie 25870fa1b3ccSPaul Dagnelie static int 25880fa1b3ccSPaul Dagnelie dmu_recv_end_check(void *arg, dmu_tx_t *tx) 25890fa1b3ccSPaul Dagnelie { 25900fa1b3ccSPaul Dagnelie dmu_recv_cookie_t *drc = arg; 25910fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 25920fa1b3ccSPaul Dagnelie int error; 25930fa1b3ccSPaul Dagnelie 25940fa1b3ccSPaul Dagnelie ASSERT3P(drc->drc_ds->ds_owner, ==, dmu_recv_tag); 25950fa1b3ccSPaul Dagnelie 25960fa1b3ccSPaul Dagnelie if (!drc->drc_newfs) { 25970fa1b3ccSPaul Dagnelie dsl_dataset_t *origin_head; 25980fa1b3ccSPaul Dagnelie 25990fa1b3ccSPaul Dagnelie error = dsl_dataset_hold(dp, drc->drc_tofs, FTAG, &origin_head); 26000fa1b3ccSPaul Dagnelie if (error != 0) 26010fa1b3ccSPaul Dagnelie return (error); 26020fa1b3ccSPaul Dagnelie if (drc->drc_force) { 26030fa1b3ccSPaul Dagnelie /* 26040fa1b3ccSPaul Dagnelie * We will destroy any snapshots in tofs (i.e. before 26050fa1b3ccSPaul Dagnelie * origin_head) that are after the origin (which is 26060fa1b3ccSPaul Dagnelie * the snap before drc_ds, because drc_ds can not 26070fa1b3ccSPaul Dagnelie * have any snaps of its own). 26080fa1b3ccSPaul Dagnelie */ 26090fa1b3ccSPaul Dagnelie uint64_t obj; 26100fa1b3ccSPaul Dagnelie 26110fa1b3ccSPaul Dagnelie obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 26120fa1b3ccSPaul Dagnelie while (obj != 26130fa1b3ccSPaul Dagnelie dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 26140fa1b3ccSPaul Dagnelie dsl_dataset_t *snap; 26150fa1b3ccSPaul Dagnelie error = dsl_dataset_hold_obj(dp, obj, FTAG, 26160fa1b3ccSPaul Dagnelie &snap); 26170fa1b3ccSPaul Dagnelie if (error != 0) 26180fa1b3ccSPaul Dagnelie break; 26190fa1b3ccSPaul Dagnelie if (snap->ds_dir != origin_head->ds_dir) 26200fa1b3ccSPaul Dagnelie error = SET_ERROR(EINVAL); 26210fa1b3ccSPaul Dagnelie if (error == 0) { 26220fa1b3ccSPaul Dagnelie error = dsl_destroy_snapshot_check_impl( 26230fa1b3ccSPaul Dagnelie snap, B_FALSE); 26240fa1b3ccSPaul Dagnelie } 26250fa1b3ccSPaul Dagnelie obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 26260fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 26270fa1b3ccSPaul Dagnelie if (error != 0) 26280fa1b3ccSPaul Dagnelie break; 26290fa1b3ccSPaul Dagnelie } 26300fa1b3ccSPaul Dagnelie if (error != 0) { 26310fa1b3ccSPaul Dagnelie dsl_dataset_rele(origin_head, FTAG); 26320fa1b3ccSPaul Dagnelie return (error); 26330fa1b3ccSPaul Dagnelie } 26340fa1b3ccSPaul Dagnelie } 2635eb633035STom Caputi if (drc->drc_keynvl != NULL) { 2636eb633035STom Caputi error = dsl_crypto_recv_raw_key_check(drc->drc_ds, 2637eb633035STom Caputi drc->drc_keynvl, tx); 2638eb633035STom Caputi if (error != 0) { 2639eb633035STom Caputi dsl_dataset_rele(origin_head, FTAG); 2640eb633035STom Caputi return (error); 2641eb633035STom Caputi } 2642eb633035STom Caputi } 2643eb633035STom Caputi 26440fa1b3ccSPaul Dagnelie error = dsl_dataset_clone_swap_check_impl(drc->drc_ds, 26450fa1b3ccSPaul Dagnelie origin_head, drc->drc_force, drc->drc_owner, tx); 26460fa1b3ccSPaul Dagnelie if (error != 0) { 26470fa1b3ccSPaul Dagnelie dsl_dataset_rele(origin_head, FTAG); 26480fa1b3ccSPaul Dagnelie return (error); 26490fa1b3ccSPaul Dagnelie } 26500fa1b3ccSPaul Dagnelie error = dsl_dataset_snapshot_check_impl(origin_head, 26510fa1b3ccSPaul Dagnelie drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 26520fa1b3ccSPaul Dagnelie dsl_dataset_rele(origin_head, FTAG); 26530fa1b3ccSPaul Dagnelie if (error != 0) 26540fa1b3ccSPaul Dagnelie return (error); 26550fa1b3ccSPaul Dagnelie 26560fa1b3ccSPaul Dagnelie error = dsl_destroy_head_check_impl(drc->drc_ds, 1); 26570fa1b3ccSPaul Dagnelie } else { 26580fa1b3ccSPaul Dagnelie error = dsl_dataset_snapshot_check_impl(drc->drc_ds, 26590fa1b3ccSPaul Dagnelie drc->drc_tosnap, tx, B_TRUE, 1, drc->drc_cred); 26600fa1b3ccSPaul Dagnelie } 26610fa1b3ccSPaul Dagnelie return (error); 26620fa1b3ccSPaul Dagnelie } 26630fa1b3ccSPaul Dagnelie 26640fa1b3ccSPaul Dagnelie static void 26650fa1b3ccSPaul Dagnelie dmu_recv_end_sync(void *arg, dmu_tx_t *tx) 26660fa1b3ccSPaul Dagnelie { 26670fa1b3ccSPaul Dagnelie dmu_recv_cookie_t *drc = arg; 26680fa1b3ccSPaul Dagnelie dsl_pool_t *dp = dmu_tx_pool(tx); 2669eb633035STom Caputi boolean_t encrypted = drc->drc_ds->ds_dir->dd_crypto_obj != 0; 26700fa1b3ccSPaul Dagnelie 26710fa1b3ccSPaul Dagnelie spa_history_log_internal_ds(drc->drc_ds, "finish receiving", 26720fa1b3ccSPaul Dagnelie tx, "snap=%s", drc->drc_tosnap); 2673eb633035STom Caputi drc->drc_ds->ds_objset->os_raw_receive = B_FALSE; 26740fa1b3ccSPaul Dagnelie 26750fa1b3ccSPaul Dagnelie if (!drc->drc_newfs) { 26760fa1b3ccSPaul Dagnelie dsl_dataset_t *origin_head; 26770fa1b3ccSPaul Dagnelie 26780fa1b3ccSPaul Dagnelie VERIFY0(dsl_dataset_hold(dp, drc->drc_tofs, FTAG, 26790fa1b3ccSPaul Dagnelie &origin_head)); 26800fa1b3ccSPaul Dagnelie 26810fa1b3ccSPaul Dagnelie if (drc->drc_force) { 26820fa1b3ccSPaul Dagnelie /* 26830fa1b3ccSPaul Dagnelie * Destroy any snapshots of drc_tofs (origin_head) 26840fa1b3ccSPaul Dagnelie * after the origin (the snap before drc_ds). 26850fa1b3ccSPaul Dagnelie */ 26860fa1b3ccSPaul Dagnelie uint64_t obj; 26870fa1b3ccSPaul Dagnelie 26880fa1b3ccSPaul Dagnelie obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 26890fa1b3ccSPaul Dagnelie while (obj != 26900fa1b3ccSPaul Dagnelie dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { 26910fa1b3ccSPaul Dagnelie dsl_dataset_t *snap; 26920fa1b3ccSPaul Dagnelie VERIFY0(dsl_dataset_hold_obj(dp, obj, FTAG, 26930fa1b3ccSPaul Dagnelie &snap)); 26940fa1b3ccSPaul Dagnelie ASSERT3P(snap->ds_dir, ==, origin_head->ds_dir); 26950fa1b3ccSPaul Dagnelie obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; 26960fa1b3ccSPaul Dagnelie dsl_destroy_snapshot_sync_impl(snap, 26970fa1b3ccSPaul Dagnelie B_FALSE, tx); 26980fa1b3ccSPaul Dagnelie dsl_dataset_rele(snap, FTAG); 26990fa1b3ccSPaul Dagnelie } 27000fa1b3ccSPaul Dagnelie } 2701eb633035STom Caputi if (drc->drc_keynvl != NULL) { 2702eb633035STom Caputi dsl_crypto_recv_raw_key_sync(drc->drc_ds, 2703eb633035STom Caputi drc->drc_keynvl, tx); 2704eb633035STom Caputi nvlist_free(drc->drc_keynvl); 2705eb633035STom Caputi drc->drc_keynvl = NULL; 2706eb633035STom Caputi } 2707eb633035STom Caputi 2708eb633035STom Caputi VERIFY3P(drc->drc_ds->ds_prev, ==, origin_head->ds_prev); 27090fa1b3ccSPaul Dagnelie 27100fa1b3ccSPaul Dagnelie dsl_dataset_clone_swap_sync_impl(drc->drc_ds, 27110fa1b3ccSPaul Dagnelie origin_head, tx); 27120fa1b3ccSPaul Dagnelie dsl_dataset_snapshot_sync_impl(origin_head, 27130fa1b3ccSPaul Dagnelie drc->drc_tosnap, tx); 27140fa1b3ccSPaul Dagnelie 27150fa1b3ccSPaul Dagnelie /* set snapshot's creation time and guid */ 27160fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(origin_head->ds_prev->ds_dbuf, tx); 27170fa1b3ccSPaul Dagnelie dsl_dataset_phys(origin_head->ds_prev)->ds_creation_time = 27180fa1b3ccSPaul Dagnelie drc->drc_drrb->drr_creation_time; 27190fa1b3ccSPaul Dagnelie dsl_dataset_phys(origin_head->ds_prev)->ds_guid = 27200fa1b3ccSPaul Dagnelie drc->drc_drrb->drr_toguid; 27210fa1b3ccSPaul Dagnelie dsl_dataset_phys(origin_head->ds_prev)->ds_flags &= 27220fa1b3ccSPaul Dagnelie ~DS_FLAG_INCONSISTENT; 27230fa1b3ccSPaul Dagnelie 27240fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(origin_head->ds_dbuf, tx); 27250fa1b3ccSPaul Dagnelie dsl_dataset_phys(origin_head)->ds_flags &= 27260fa1b3ccSPaul Dagnelie ~DS_FLAG_INCONSISTENT; 27270fa1b3ccSPaul Dagnelie 27280fa1b3ccSPaul Dagnelie drc->drc_newsnapobj = 27290fa1b3ccSPaul Dagnelie dsl_dataset_phys(origin_head)->ds_prev_snap_obj; 27300fa1b3ccSPaul Dagnelie 27310fa1b3ccSPaul Dagnelie dsl_dataset_rele(origin_head, FTAG); 27320fa1b3ccSPaul Dagnelie dsl_destroy_head_sync_impl(drc->drc_ds, tx); 27330fa1b3ccSPaul Dagnelie 27340fa1b3ccSPaul Dagnelie if (drc->drc_owner != NULL) 27350fa1b3ccSPaul Dagnelie VERIFY3P(origin_head->ds_owner, ==, drc->drc_owner); 27360fa1b3ccSPaul Dagnelie } else { 27370fa1b3ccSPaul Dagnelie dsl_dataset_t *ds = drc->drc_ds; 27380fa1b3ccSPaul Dagnelie 27390fa1b3ccSPaul Dagnelie dsl_dataset_snapshot_sync_impl(ds, drc->drc_tosnap, tx); 27400fa1b3ccSPaul Dagnelie 27410fa1b3ccSPaul Dagnelie /* set snapshot's creation time and guid */ 27420fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); 27430fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds->ds_prev)->ds_creation_time = 27440fa1b3ccSPaul Dagnelie drc->drc_drrb->drr_creation_time; 27450fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds->ds_prev)->ds_guid = 27460fa1b3ccSPaul Dagnelie drc->drc_drrb->drr_toguid; 27470fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds->ds_prev)->ds_flags &= 27480fa1b3ccSPaul Dagnelie ~DS_FLAG_INCONSISTENT; 27490fa1b3ccSPaul Dagnelie 27500fa1b3ccSPaul Dagnelie dmu_buf_will_dirty(ds->ds_dbuf, tx); 27510fa1b3ccSPaul Dagnelie dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; 27520fa1b3ccSPaul Dagnelie if (dsl_dataset_has_resume_receive_state(ds)) { 27530fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27540fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_FROMGUID, tx); 27550fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27560fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_OBJECT, tx); 27570fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27580fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_OFFSET, tx); 27590fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27600fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_BYTES, tx); 27610fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27620fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_TOGUID, tx); 27630fa1b3ccSPaul Dagnelie (void) zap_remove(dp->dp_meta_objset, ds->ds_object, 27640fa1b3ccSPaul Dagnelie DS_FIELD_RESUME_TONAME, tx); 27650fa1b3ccSPaul Dagnelie } 27660fa1b3ccSPaul Dagnelie drc->drc_newsnapobj = 27670fa1b3ccSPaul Dagnelie dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj; 27680fa1b3ccSPaul Dagnelie } 2769eb633035STom Caputi 2770eb633035STom Caputi /* 2771eb633035STom Caputi * If this is a raw receive, the crypt_keydata nvlist will include 2772eb633035STom Caputi * a to_ivset_guid for us to set on the new snapshot. This value 2773eb633035STom Caputi * will override the value generated by the snapshot code. However, 2774eb633035STom Caputi * this value may not be present, because older implementations of 2775eb633035STom Caputi * the raw send code did not include this value, and we are still 2776eb633035STom Caputi * allowed to receive them if the zfs_disable_ivset_guid_check 2777eb633035STom Caputi * tunable is set, in which case we will leave the newly-generated 2778eb633035STom Caputi * value. 2779eb633035STom Caputi */ 2780eb633035STom Caputi if (drc->drc_raw && drc->drc_ivset_guid != 0) { 2781eb633035STom Caputi dmu_object_zapify(dp->dp_meta_objset, drc->drc_newsnapobj, 2782eb633035STom Caputi DMU_OT_DSL_DATASET, tx); 2783eb633035STom Caputi VERIFY0(zap_update(dp->dp_meta_objset, drc->drc_newsnapobj, 2784eb633035STom Caputi DS_FIELD_IVSET_GUID, sizeof (uint64_t), 1, 2785eb633035STom Caputi &drc->drc_ivset_guid, tx)); 2786eb633035STom Caputi } 2787eb633035STom Caputi 27880fa1b3ccSPaul Dagnelie /* 27890fa1b3ccSPaul Dagnelie * Release the hold from dmu_recv_begin. This must be done before 2790eb633035STom Caputi * we return to open context, so that when we free the dataset's dnode 2791eb633035STom Caputi * we can evict its bonus buffer. Since the dataset may be destroyed 2792eb633035STom Caputi * at this point (and therefore won't have a valid pointer to the spa) 2793eb633035STom Caputi * we release the key mapping manually here while we do have a valid 2794eb633035STom Caputi * pointer, if it exists. 27950fa1b3ccSPaul Dagnelie */ 2796eb633035STom Caputi if (!drc->drc_raw && encrypted) { 2797eb633035STom Caputi (void) spa_keystore_remove_mapping(dmu_tx_pool(tx)->dp_spa, 2798eb633035STom Caputi drc->drc_ds->ds_object, drc->drc_ds); 2799eb633035STom Caputi } 2800eb633035STom Caputi dsl_dataset_disown(drc->drc_ds, 0, dmu_recv_tag); 28010fa1b3ccSPaul Dagnelie drc->drc_ds = NULL; 28020fa1b3ccSPaul Dagnelie } 28030fa1b3ccSPaul Dagnelie 28040fa1b3ccSPaul Dagnelie static int 2805eb633035STom Caputi add_ds_to_guidmap(const char *name, avl_tree_t *guid_map, uint64_t snapobj, 2806eb633035STom Caputi boolean_t raw) 28070fa1b3ccSPaul Dagnelie { 28080fa1b3ccSPaul Dagnelie dsl_pool_t *dp; 28090fa1b3ccSPaul Dagnelie dsl_dataset_t *snapds; 28100fa1b3ccSPaul Dagnelie guid_map_entry_t *gmep; 2811eb633035STom Caputi objset_t *os; 2812eb633035STom Caputi ds_hold_flags_t dsflags = (raw) ? 0 : DS_HOLD_FLAG_DECRYPT; 28130fa1b3ccSPaul Dagnelie int err; 28140fa1b3ccSPaul Dagnelie 28150fa1b3ccSPaul Dagnelie ASSERT(guid_map != NULL); 28160fa1b3ccSPaul Dagnelie 28170fa1b3ccSPaul Dagnelie err = dsl_pool_hold(name, FTAG, &dp); 28180fa1b3ccSPaul Dagnelie if (err != 0) 28190fa1b3ccSPaul Dagnelie return (err); 28200fa1b3ccSPaul Dagnelie gmep = kmem_alloc(sizeof (*gmep), KM_SLEEP); 2821eb633035STom Caputi err = dsl_dataset_own_obj(dp, snapobj, dsflags, gmep, &snapds); 28220fa1b3ccSPaul Dagnelie if (err == 0) { 2823eb633035STom Caputi /* 2824eb633035STom Caputi * If this is a deduplicated raw send stream, we need 2825eb633035STom Caputi * to make sure that we can still read raw blocks from 2826eb633035STom Caputi * earlier datasets in the stream, so we set the 2827eb633035STom Caputi * os_raw_receive flag now. 2828eb633035STom Caputi */ 2829eb633035STom Caputi if (raw) { 2830eb633035STom Caputi err = dmu_objset_from_ds(snapds, &os); 2831eb633035STom Caputi if (err != 0) { 2832eb633035STom Caputi dsl_dataset_disown(snapds, dsflags, FTAG); 2833eb633035STom Caputi dsl_pool_rele(dp, FTAG); 2834eb633035STom Caputi kmem_free(gmep, sizeof (*gmep)); 2835eb633035STom Caputi return (err); 2836eb633035STom Caputi } 2837eb633035STom Caputi os->os_raw_receive = B_TRUE; 2838eb633035STom Caputi } 2839eb633035STom Caputi 2840eb633035STom Caputi gmep->raw = raw; 28410fa1b3ccSPaul Dagnelie gmep->guid = dsl_dataset_phys(snapds)->ds_guid; 28420fa1b3ccSPaul Dagnelie gmep->gme_ds = snapds; 28430fa1b3ccSPaul Dagnelie avl_add(guid_map, gmep); 28440fa1b3ccSPaul Dagnelie } else { 28450fa1b3ccSPaul Dagnelie kmem_free(gmep, sizeof (*gmep)); 28460fa1b3ccSPaul Dagnelie } 28470fa1b3ccSPaul Dagnelie 28480fa1b3ccSPaul Dagnelie dsl_pool_rele(dp, FTAG); 28490fa1b3ccSPaul Dagnelie return (err); 28500fa1b3ccSPaul Dagnelie } 28510fa1b3ccSPaul Dagnelie 28520fa1b3ccSPaul Dagnelie static int dmu_recv_end_modified_blocks = 3; 28530fa1b3ccSPaul Dagnelie 28540fa1b3ccSPaul Dagnelie static int 28550fa1b3ccSPaul Dagnelie dmu_recv_existing_end(dmu_recv_cookie_t *drc) 28560fa1b3ccSPaul Dagnelie { 28570fa1b3ccSPaul Dagnelie #ifdef _KERNEL 28580fa1b3ccSPaul Dagnelie /* 28590fa1b3ccSPaul Dagnelie * We will be destroying the ds; make sure its origin is unmounted if 28600fa1b3ccSPaul Dagnelie * necessary. 28610fa1b3ccSPaul Dagnelie */ 28620fa1b3ccSPaul Dagnelie char name[ZFS_MAX_DATASET_NAME_LEN]; 28630fa1b3ccSPaul Dagnelie dsl_dataset_name(drc->drc_ds, name); 28640fa1b3ccSPaul Dagnelie zfs_destroy_unmount_origin(name); 28650fa1b3ccSPaul Dagnelie #endif 28660fa1b3ccSPaul Dagnelie 28670fa1b3ccSPaul Dagnelie return (dsl_sync_task(drc->drc_tofs, 28680fa1b3ccSPaul Dagnelie dmu_recv_end_check, dmu_recv_end_sync, drc, 28690fa1b3ccSPaul Dagnelie dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL)); 28700fa1b3ccSPaul Dagnelie } 28710fa1b3ccSPaul Dagnelie 28720fa1b3ccSPaul Dagnelie static int 28730fa1b3ccSPaul Dagnelie dmu_recv_new_end(dmu_recv_cookie_t *drc) 28740fa1b3ccSPaul Dagnelie { 28750fa1b3ccSPaul Dagnelie return (dsl_sync_task(drc->drc_tofs, 28760fa1b3ccSPaul Dagnelie dmu_recv_end_check, dmu_recv_end_sync, drc, 28770fa1b3ccSPaul Dagnelie dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL)); 28780fa1b3ccSPaul Dagnelie } 28790fa1b3ccSPaul Dagnelie 28800fa1b3ccSPaul Dagnelie int 28810fa1b3ccSPaul Dagnelie dmu_recv_end(dmu_recv_cookie_t *drc, void *owner) 28820fa1b3ccSPaul Dagnelie { 28830fa1b3ccSPaul Dagnelie int error; 28840fa1b3ccSPaul Dagnelie 28850fa1b3ccSPaul Dagnelie drc->drc_owner = owner; 28860fa1b3ccSPaul Dagnelie 28870fa1b3ccSPaul Dagnelie if (drc->drc_newfs) 28880fa1b3ccSPaul Dagnelie error = dmu_recv_new_end(drc); 28890fa1b3ccSPaul Dagnelie else 28900fa1b3ccSPaul Dagnelie error = dmu_recv_existing_end(drc); 28910fa1b3ccSPaul Dagnelie 28920fa1b3ccSPaul Dagnelie if (error != 0) { 28930fa1b3ccSPaul Dagnelie dmu_recv_cleanup_ds(drc); 2894eb633035STom Caputi nvlist_free(drc->drc_keynvl); 28950fa1b3ccSPaul Dagnelie } else if (drc->drc_guid_to_ds_map != NULL) { 2896eb633035STom Caputi (void) add_ds_to_guidmap(drc->drc_tofs, drc->drc_guid_to_ds_map, 2897eb633035STom Caputi drc->drc_newsnapobj, drc->drc_raw); 28980fa1b3ccSPaul Dagnelie } 28990fa1b3ccSPaul Dagnelie return (error); 29000fa1b3ccSPaul Dagnelie } 29010fa1b3ccSPaul Dagnelie 29020fa1b3ccSPaul Dagnelie /* 29030fa1b3ccSPaul Dagnelie * Return TRUE if this objset is currently being received into. 29040fa1b3ccSPaul Dagnelie */ 29050fa1b3ccSPaul Dagnelie boolean_t 29060fa1b3ccSPaul Dagnelie dmu_objset_is_receiving(objset_t *os) 29070fa1b3ccSPaul Dagnelie { 29080fa1b3ccSPaul Dagnelie return (os->os_dsl_dataset != NULL && 29090fa1b3ccSPaul Dagnelie os->os_dsl_dataset->ds_owner == dmu_recv_tag); 29100fa1b3ccSPaul Dagnelie } 2911