5437 lines
147 KiB
C
5437 lines
147 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
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* Copyright (c) 2012, Joyent, Inc. All rights reserved.
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* Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
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* All rights reserved
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* Copyright (c) 2013 Steven Hartland. All rights reserved.
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* Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
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* Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
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* Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
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* Copyright (c) 2019 Datto Inc.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <libintl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <fcntl.h>
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#include <sys/mount.h>
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#include <sys/mntent.h>
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#include <sys/mnttab.h>
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#include <sys/avl.h>
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#include <sys/debug.h>
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#include <sys/stat.h>
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#include <pthread.h>
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#include <umem.h>
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#include <time.h>
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#include <libzfs.h>
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#include <libzfs_core.h>
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#include <libzutil.h>
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#include "zfs_namecheck.h"
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#include "zfs_prop.h"
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#include "zfs_fletcher.h"
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#include "libzfs_impl.h"
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#include <cityhash.h>
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#include <zlib.h>
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#include <sys/zio_checksum.h>
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#include <sys/dsl_crypt.h>
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#include <sys/ddt.h>
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#include <sys/socket.h>
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#include <sys/sha2.h>
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static int zfs_receive_impl(libzfs_handle_t *, const char *, const char *,
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recvflags_t *, int, const char *, nvlist_t *, avl_tree_t *, char **,
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const char *, nvlist_t *);
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static int guid_to_name_redact_snaps(libzfs_handle_t *hdl, const char *parent,
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uint64_t guid, boolean_t bookmark_ok, uint64_t *redact_snap_guids,
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uint64_t num_redact_snaps, char *name);
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static int guid_to_name(libzfs_handle_t *, const char *,
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uint64_t, boolean_t, char *);
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typedef struct progress_arg {
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zfs_handle_t *pa_zhp;
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int pa_fd;
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boolean_t pa_parsable;
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boolean_t pa_estimate;
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int pa_verbosity;
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} progress_arg_t;
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static int
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dump_record(dmu_replay_record_t *drr, void *payload, size_t payload_len,
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zio_cksum_t *zc, int outfd)
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{
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ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum),
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==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t));
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fletcher_4_incremental_native(drr,
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offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), zc);
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if (drr->drr_type != DRR_BEGIN) {
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ASSERT(ZIO_CHECKSUM_IS_ZERO(&drr->drr_u.
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drr_checksum.drr_checksum));
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drr->drr_u.drr_checksum.drr_checksum = *zc;
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}
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fletcher_4_incremental_native(&drr->drr_u.drr_checksum.drr_checksum,
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sizeof (zio_cksum_t), zc);
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if (write(outfd, drr, sizeof (*drr)) == -1)
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return (errno);
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if (payload_len != 0) {
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fletcher_4_incremental_native(payload, payload_len, zc);
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if (write(outfd, payload, payload_len) == -1)
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return (errno);
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}
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return (0);
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}
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/*
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* Routines for dealing with the AVL tree of fs-nvlists
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*/
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typedef struct fsavl_node {
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avl_node_t fn_node;
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nvlist_t *fn_nvfs;
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char *fn_snapname;
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uint64_t fn_guid;
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} fsavl_node_t;
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static int
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fsavl_compare(const void *arg1, const void *arg2)
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{
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const fsavl_node_t *fn1 = (const fsavl_node_t *)arg1;
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const fsavl_node_t *fn2 = (const fsavl_node_t *)arg2;
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return (TREE_CMP(fn1->fn_guid, fn2->fn_guid));
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}
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/*
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* Given the GUID of a snapshot, find its containing filesystem and
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* (optionally) name.
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*/
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static nvlist_t *
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fsavl_find(avl_tree_t *avl, uint64_t snapguid, char **snapname)
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{
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fsavl_node_t fn_find;
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fsavl_node_t *fn;
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fn_find.fn_guid = snapguid;
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fn = avl_find(avl, &fn_find, NULL);
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if (fn) {
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if (snapname)
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*snapname = fn->fn_snapname;
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return (fn->fn_nvfs);
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}
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return (NULL);
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}
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static void
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fsavl_destroy(avl_tree_t *avl)
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{
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fsavl_node_t *fn;
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void *cookie;
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if (avl == NULL)
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return;
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cookie = NULL;
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while ((fn = avl_destroy_nodes(avl, &cookie)) != NULL)
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free(fn);
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avl_destroy(avl);
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free(avl);
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}
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/*
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* Given an nvlist, produce an avl tree of snapshots, ordered by guid
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*/
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static avl_tree_t *
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fsavl_create(nvlist_t *fss)
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{
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avl_tree_t *fsavl;
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nvpair_t *fselem = NULL;
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if ((fsavl = malloc(sizeof (avl_tree_t))) == NULL)
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return (NULL);
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avl_create(fsavl, fsavl_compare, sizeof (fsavl_node_t),
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offsetof(fsavl_node_t, fn_node));
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while ((fselem = nvlist_next_nvpair(fss, fselem)) != NULL) {
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nvlist_t *nvfs, *snaps;
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nvpair_t *snapelem = NULL;
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nvfs = fnvpair_value_nvlist(fselem);
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snaps = fnvlist_lookup_nvlist(nvfs, "snaps");
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while ((snapelem =
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nvlist_next_nvpair(snaps, snapelem)) != NULL) {
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fsavl_node_t *fn;
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if ((fn = malloc(sizeof (fsavl_node_t))) == NULL) {
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fsavl_destroy(fsavl);
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return (NULL);
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}
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fn->fn_nvfs = nvfs;
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fn->fn_snapname = nvpair_name(snapelem);
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fn->fn_guid = fnvpair_value_uint64(snapelem);
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/*
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* Note: if there are multiple snaps with the
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* same GUID, we ignore all but one.
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*/
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avl_index_t where = 0;
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if (avl_find(fsavl, fn, &where) == NULL)
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avl_insert(fsavl, fn, where);
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else
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free(fn);
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}
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}
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return (fsavl);
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}
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/*
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* Routines for dealing with the giant nvlist of fs-nvlists, etc.
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*/
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typedef struct send_data {
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/*
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* assigned inside every recursive call,
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* restored from *_save on return:
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*
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* guid of fromsnap snapshot in parent dataset
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* txg of fromsnap snapshot in current dataset
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* txg of tosnap snapshot in current dataset
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*/
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uint64_t parent_fromsnap_guid;
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uint64_t fromsnap_txg;
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uint64_t tosnap_txg;
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/* the nvlists get accumulated during depth-first traversal */
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nvlist_t *parent_snaps;
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nvlist_t *fss;
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nvlist_t *snapprops;
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nvlist_t *snapholds; /* user holds */
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/* send-receive configuration, does not change during traversal */
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const char *fsname;
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const char *fromsnap;
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const char *tosnap;
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boolean_t recursive;
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boolean_t raw;
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boolean_t doall;
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boolean_t replicate;
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boolean_t skipmissing;
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boolean_t verbose;
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boolean_t backup;
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boolean_t seenfrom;
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boolean_t seento;
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boolean_t holds; /* were holds requested with send -h */
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boolean_t props;
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/*
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* The header nvlist is of the following format:
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* {
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* "tosnap" -> string
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* "fromsnap" -> string (if incremental)
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* "fss" -> {
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* id -> {
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*
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* "name" -> string (full name; for debugging)
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* "parentfromsnap" -> number (guid of fromsnap in parent)
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*
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* "props" -> { name -> value (only if set here) }
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* "snaps" -> { name (lastname) -> number (guid) }
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* "snapprops" -> { name (lastname) -> { name -> value } }
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* "snapholds" -> { name (lastname) -> { holdname -> crtime } }
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*
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* "origin" -> number (guid) (if clone)
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* "is_encroot" -> boolean
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* "sent" -> boolean (not on-disk)
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* }
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* }
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* }
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*
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*/
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} send_data_t;
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static void
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send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv);
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/*
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* Collect guid, valid props, optionally holds, etc. of a snapshot.
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* This interface is intended for use as a zfs_iter_snapshots_sorted visitor.
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*/
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static int
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send_iterate_snap(zfs_handle_t *zhp, void *arg)
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{
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send_data_t *sd = arg;
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uint64_t guid = zhp->zfs_dmustats.dds_guid;
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uint64_t txg = zhp->zfs_dmustats.dds_creation_txg;
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boolean_t isfromsnap, istosnap, istosnapwithnofrom;
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char *snapname;
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const char *from = sd->fromsnap;
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const char *to = sd->tosnap;
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snapname = strrchr(zhp->zfs_name, '@');
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assert(snapname != NULL);
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++snapname;
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isfromsnap = (from != NULL && strcmp(from, snapname) == 0);
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istosnap = (to != NULL && strcmp(to, snapname) == 0);
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istosnapwithnofrom = (istosnap && from == NULL);
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if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) {
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if (sd->verbose) {
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(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
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"skipping snapshot %s because it was created "
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"after the destination snapshot (%s)\n"),
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zhp->zfs_name, to);
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}
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zfs_close(zhp);
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return (0);
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}
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fnvlist_add_uint64(sd->parent_snaps, snapname, guid);
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/*
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* NB: if there is no fromsnap here (it's a newly created fs in
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* an incremental replication), we will substitute the tosnap.
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*/
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if (isfromsnap || (sd->parent_fromsnap_guid == 0 && istosnap))
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sd->parent_fromsnap_guid = guid;
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if (!sd->recursive) {
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/*
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* To allow a doall stream to work properly
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* with a NULL fromsnap
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*/
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if (sd->doall && from == NULL && !sd->seenfrom)
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sd->seenfrom = B_TRUE;
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if (!sd->seenfrom && isfromsnap) {
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sd->seenfrom = B_TRUE;
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zfs_close(zhp);
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return (0);
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}
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if ((sd->seento || !sd->seenfrom) && !istosnapwithnofrom) {
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zfs_close(zhp);
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return (0);
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}
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if (istosnap)
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sd->seento = B_TRUE;
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}
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nvlist_t *nv = fnvlist_alloc();
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send_iterate_prop(zhp, sd->backup, nv);
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fnvlist_add_nvlist(sd->snapprops, snapname, nv);
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fnvlist_free(nv);
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if (sd->holds) {
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nvlist_t *holds;
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if (lzc_get_holds(zhp->zfs_name, &holds) == 0) {
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fnvlist_add_nvlist(sd->snapholds, snapname, holds);
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fnvlist_free(holds);
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}
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}
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zfs_close(zhp);
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return (0);
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}
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/*
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* Collect all valid props from the handle snap into an nvlist.
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*/
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static void
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send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv)
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{
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nvlist_t *props;
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if (received_only)
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props = zfs_get_recvd_props(zhp);
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else
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props = zhp->zfs_props;
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nvpair_t *elem = NULL;
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while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
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char *propname = nvpair_name(elem);
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zfs_prop_t prop = zfs_name_to_prop(propname);
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if (!zfs_prop_user(propname)) {
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/*
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* Realistically, this should never happen. However,
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* we want the ability to add DSL properties without
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* needing to make incompatible version changes. We
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* need to ignore unknown properties to allow older
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* software to still send datasets containing these
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* properties, with the unknown properties elided.
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*/
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if (prop == ZPROP_INVAL)
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continue;
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if (zfs_prop_readonly(prop))
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continue;
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}
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nvlist_t *propnv = fnvpair_value_nvlist(elem);
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boolean_t isspacelimit = (prop == ZFS_PROP_QUOTA ||
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prop == ZFS_PROP_RESERVATION ||
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prop == ZFS_PROP_REFQUOTA ||
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prop == ZFS_PROP_REFRESERVATION);
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if (isspacelimit && zhp->zfs_type == ZFS_TYPE_SNAPSHOT)
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continue;
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char *source;
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if (nvlist_lookup_string(propnv, ZPROP_SOURCE, &source) == 0) {
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if (strcmp(source, zhp->zfs_name) != 0 &&
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strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0)
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continue;
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} else {
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/*
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* May have no source before SPA_VERSION_RECVD_PROPS,
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* but is still modifiable.
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*/
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if (!isspacelimit)
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continue;
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}
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if (zfs_prop_user(propname) ||
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zfs_prop_get_type(prop) == PROP_TYPE_STRING) {
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char *value;
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value = fnvlist_lookup_string(propnv, ZPROP_VALUE);
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fnvlist_add_string(nv, propname, value);
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} else {
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uint64_t value;
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value = fnvlist_lookup_uint64(propnv, ZPROP_VALUE);
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fnvlist_add_uint64(nv, propname, value);
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}
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}
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}
|
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|
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/*
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* returns snapshot guid
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* and returns 0 if the snapshot does not exist
|
|
*/
|
|
static uint64_t
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get_snap_guid(libzfs_handle_t *hdl, const char *fs, const char *snap)
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{
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char name[MAXPATHLEN + 1];
|
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uint64_t guid = 0;
|
|
|
|
if (fs == NULL || fs[0] == '\0' || snap == NULL || snap[0] == '\0')
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return (guid);
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|
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(void) snprintf(name, sizeof (name), "%s@%s", fs, snap);
|
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zfs_handle_t *zhp = zfs_open(hdl, name, ZFS_TYPE_SNAPSHOT);
|
|
if (zhp != NULL) {
|
|
guid = zfs_prop_get_int(zhp, ZFS_PROP_GUID);
|
|
zfs_close(zhp);
|
|
}
|
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return (guid);
|
|
}
|
|
|
|
/*
|
|
* returns snapshot creation txg
|
|
* and returns 0 if the snapshot does not exist
|
|
*/
|
|
static uint64_t
|
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get_snap_txg(libzfs_handle_t *hdl, const char *fs, const char *snap)
|
|
{
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char name[ZFS_MAX_DATASET_NAME_LEN];
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uint64_t txg = 0;
|
|
|
|
if (fs == NULL || fs[0] == '\0' || snap == NULL || snap[0] == '\0')
|
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return (txg);
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|
|
(void) snprintf(name, sizeof (name), "%s@%s", fs, snap);
|
|
if (zfs_dataset_exists(hdl, name, ZFS_TYPE_SNAPSHOT)) {
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|
zfs_handle_t *zhp = zfs_open(hdl, name, ZFS_TYPE_SNAPSHOT);
|
|
if (zhp != NULL) {
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txg = zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG);
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|
zfs_close(zhp);
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}
|
|
}
|
|
|
|
return (txg);
|
|
}
|
|
|
|
/*
|
|
* Recursively generate nvlists describing datasets. See comment
|
|
* for the data structure send_data_t above for description of contents
|
|
* of the nvlist.
|
|
*/
|
|
static int
|
|
send_iterate_fs(zfs_handle_t *zhp, void *arg)
|
|
{
|
|
send_data_t *sd = arg;
|
|
nvlist_t *nvfs = NULL, *nv = NULL;
|
|
int rv = 0;
|
|
uint64_t min_txg = 0, max_txg = 0;
|
|
uint64_t txg = zhp->zfs_dmustats.dds_creation_txg;
|
|
uint64_t guid = zhp->zfs_dmustats.dds_guid;
|
|
uint64_t fromsnap_txg, tosnap_txg;
|
|
char guidstring[64];
|
|
|
|
/* These fields are restored on return from a recursive call. */
|
|
uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid;
|
|
uint64_t fromsnap_txg_save = sd->fromsnap_txg;
|
|
uint64_t tosnap_txg_save = sd->tosnap_txg;
|
|
|
|
fromsnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->fromsnap);
|
|
if (fromsnap_txg != 0)
|
|
sd->fromsnap_txg = fromsnap_txg;
|
|
|
|
tosnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->tosnap);
|
|
if (tosnap_txg != 0)
|
|
sd->tosnap_txg = tosnap_txg;
|
|
|
|
/*
|
|
* On the send side, if the current dataset does not have tosnap,
|
|
* perform two additional checks:
|
|
*
|
|
* - Skip sending the current dataset if it was created later than
|
|
* the parent tosnap.
|
|
* - Return error if the current dataset was created earlier than
|
|
* the parent tosnap, unless --skip-missing specified. Then
|
|
* just print a warning.
|
|
*/
|
|
if (sd->tosnap != NULL && tosnap_txg == 0) {
|
|
if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) {
|
|
if (sd->verbose) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"skipping dataset %s: snapshot %s does "
|
|
"not exist\n"), zhp->zfs_name, sd->tosnap);
|
|
}
|
|
} else if (sd->skipmissing) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"WARNING: skipping dataset %s and its children:"
|
|
" snapshot %s does not exist\n"),
|
|
zhp->zfs_name, sd->tosnap);
|
|
} else {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"cannot send %s@%s%s: snapshot %s@%s does not "
|
|
"exist\n"), sd->fsname, sd->tosnap, sd->recursive ?
|
|
dgettext(TEXT_DOMAIN, " recursively") : "",
|
|
zhp->zfs_name, sd->tosnap);
|
|
rv = EZFS_NOENT;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
nvfs = fnvlist_alloc();
|
|
fnvlist_add_string(nvfs, "name", zhp->zfs_name);
|
|
fnvlist_add_uint64(nvfs, "parentfromsnap", sd->parent_fromsnap_guid);
|
|
|
|
if (zhp->zfs_dmustats.dds_origin[0] != '\0') {
|
|
zfs_handle_t *origin = zfs_open(zhp->zfs_hdl,
|
|
zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT);
|
|
if (origin == NULL) {
|
|
rv = -1;
|
|
goto out;
|
|
}
|
|
fnvlist_add_uint64(nvfs, "origin",
|
|
origin->zfs_dmustats.dds_guid);
|
|
zfs_close(origin);
|
|
}
|
|
|
|
/* Iterate over props. */
|
|
if (sd->props || sd->backup || sd->recursive) {
|
|
nv = fnvlist_alloc();
|
|
send_iterate_prop(zhp, sd->backup, nv);
|
|
fnvlist_add_nvlist(nvfs, "props", nv);
|
|
}
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF) {
|
|
boolean_t encroot;
|
|
|
|
/* Determine if this dataset is an encryption root. */
|
|
if (zfs_crypto_get_encryption_root(zhp, &encroot, NULL) != 0) {
|
|
rv = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (encroot)
|
|
fnvlist_add_boolean(nvfs, "is_encroot");
|
|
|
|
/*
|
|
* Encrypted datasets can only be sent with properties if
|
|
* the raw flag is specified because the receive side doesn't
|
|
* currently have a mechanism for recursively asking the user
|
|
* for new encryption parameters.
|
|
*/
|
|
if (!sd->raw) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"cannot send %s@%s: encrypted dataset %s may not "
|
|
"be sent with properties without the raw flag\n"),
|
|
sd->fsname, sd->tosnap, zhp->zfs_name);
|
|
rv = -1;
|
|
goto out;
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Iterate over snaps, and set sd->parent_fromsnap_guid.
|
|
*
|
|
* If this is a "doall" send, a replicate send or we're just trying
|
|
* to gather a list of previous snapshots, iterate through all the
|
|
* snaps in the txg range. Otherwise just look at the one we're
|
|
* interested in.
|
|
*/
|
|
sd->parent_fromsnap_guid = 0;
|
|
sd->parent_snaps = fnvlist_alloc();
|
|
sd->snapprops = fnvlist_alloc();
|
|
if (sd->holds)
|
|
sd->snapholds = fnvlist_alloc();
|
|
if (sd->doall || sd->replicate || sd->tosnap == NULL) {
|
|
if (!sd->replicate && fromsnap_txg != 0)
|
|
min_txg = fromsnap_txg;
|
|
if (!sd->replicate && tosnap_txg != 0)
|
|
max_txg = tosnap_txg;
|
|
(void) zfs_iter_snapshots_sorted(zhp, send_iterate_snap, sd,
|
|
min_txg, max_txg);
|
|
} else {
|
|
char snapname[MAXPATHLEN];
|
|
zfs_handle_t *snap;
|
|
|
|
(void) snprintf(snapname, sizeof (snapname), "%s@%s",
|
|
zhp->zfs_name, sd->tosnap);
|
|
if (sd->fromsnap != NULL)
|
|
sd->seenfrom = B_TRUE;
|
|
snap = zfs_open(zhp->zfs_hdl, snapname, ZFS_TYPE_SNAPSHOT);
|
|
if (snap != NULL)
|
|
(void) send_iterate_snap(snap, sd);
|
|
}
|
|
|
|
fnvlist_add_nvlist(nvfs, "snaps", sd->parent_snaps);
|
|
fnvlist_free(sd->parent_snaps);
|
|
fnvlist_add_nvlist(nvfs, "snapprops", sd->snapprops);
|
|
fnvlist_free(sd->snapprops);
|
|
if (sd->holds) {
|
|
fnvlist_add_nvlist(nvfs, "snapholds", sd->snapholds);
|
|
fnvlist_free(sd->snapholds);
|
|
}
|
|
|
|
/* Do not allow the size of the properties list to exceed the limit */
|
|
if ((fnvlist_size(nvfs) + fnvlist_size(sd->fss)) >
|
|
zhp->zfs_hdl->libzfs_max_nvlist) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"warning: cannot send %s@%s: the size of the list of "
|
|
"snapshots and properties is too large to be received "
|
|
"successfully.\n"
|
|
"Select a smaller number of snapshots to send.\n"),
|
|
zhp->zfs_name, sd->tosnap);
|
|
rv = EZFS_NOSPC;
|
|
goto out;
|
|
}
|
|
/* Add this fs to nvlist. */
|
|
(void) snprintf(guidstring, sizeof (guidstring),
|
|
"0x%llx", (longlong_t)guid);
|
|
fnvlist_add_nvlist(sd->fss, guidstring, nvfs);
|
|
|
|
/* Iterate over children. */
|
|
if (sd->recursive)
|
|
rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd);
|
|
|
|
out:
|
|
/* Restore saved fields. */
|
|
sd->parent_fromsnap_guid = parent_fromsnap_guid_save;
|
|
sd->fromsnap_txg = fromsnap_txg_save;
|
|
sd->tosnap_txg = tosnap_txg_save;
|
|
|
|
fnvlist_free(nv);
|
|
fnvlist_free(nvfs);
|
|
|
|
zfs_close(zhp);
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
|
|
const char *tosnap, boolean_t recursive, boolean_t raw, boolean_t doall,
|
|
boolean_t replicate, boolean_t skipmissing, boolean_t verbose,
|
|
boolean_t backup, boolean_t holds, boolean_t props, nvlist_t **nvlp,
|
|
avl_tree_t **avlp)
|
|
{
|
|
zfs_handle_t *zhp;
|
|
send_data_t sd = { 0 };
|
|
int error;
|
|
|
|
zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
if (zhp == NULL)
|
|
return (EZFS_BADTYPE);
|
|
|
|
sd.fss = fnvlist_alloc();
|
|
sd.fsname = fsname;
|
|
sd.fromsnap = fromsnap;
|
|
sd.tosnap = tosnap;
|
|
sd.recursive = recursive;
|
|
sd.raw = raw;
|
|
sd.doall = doall;
|
|
sd.replicate = replicate;
|
|
sd.skipmissing = skipmissing;
|
|
sd.verbose = verbose;
|
|
sd.backup = backup;
|
|
sd.holds = holds;
|
|
sd.props = props;
|
|
|
|
if ((error = send_iterate_fs(zhp, &sd)) != 0) {
|
|
fnvlist_free(sd.fss);
|
|
if (avlp != NULL)
|
|
*avlp = NULL;
|
|
*nvlp = NULL;
|
|
return (error);
|
|
}
|
|
|
|
if (avlp != NULL && (*avlp = fsavl_create(sd.fss)) == NULL) {
|
|
fnvlist_free(sd.fss);
|
|
*nvlp = NULL;
|
|
return (EZFS_NOMEM);
|
|
}
|
|
|
|
*nvlp = sd.fss;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Routines specific to "zfs send"
|
|
*/
|
|
typedef struct send_dump_data {
|
|
/* these are all just the short snapname (the part after the @) */
|
|
const char *fromsnap;
|
|
const char *tosnap;
|
|
char prevsnap[ZFS_MAX_DATASET_NAME_LEN];
|
|
uint64_t prevsnap_obj;
|
|
boolean_t seenfrom, seento, replicate, doall, fromorigin;
|
|
boolean_t dryrun, parsable, progress, embed_data, std_out;
|
|
boolean_t large_block, compress, raw, holds;
|
|
int outfd;
|
|
boolean_t err;
|
|
nvlist_t *fss;
|
|
nvlist_t *snapholds;
|
|
avl_tree_t *fsavl;
|
|
snapfilter_cb_t *filter_cb;
|
|
void *filter_cb_arg;
|
|
nvlist_t *debugnv;
|
|
char holdtag[ZFS_MAX_DATASET_NAME_LEN];
|
|
int cleanup_fd;
|
|
int verbosity;
|
|
uint64_t size;
|
|
} send_dump_data_t;
|
|
|
|
static int
|
|
zfs_send_space(zfs_handle_t *zhp, const char *snapname, const char *from,
|
|
enum lzc_send_flags flags, uint64_t *spacep)
|
|
{
|
|
assert(snapname != NULL);
|
|
|
|
int error = lzc_send_space(snapname, from, flags, spacep);
|
|
if (error == 0)
|
|
return (0);
|
|
|
|
char errbuf[ERRBUFLEN];
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"warning: cannot estimate space for '%s'"), snapname);
|
|
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
switch (error) {
|
|
case EXDEV:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not an earlier snapshot from the same fs"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
|
|
|
|
case ENOENT:
|
|
if (zfs_dataset_exists(hdl, snapname,
|
|
ZFS_TYPE_SNAPSHOT)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental source (%s) does not exist"),
|
|
snapname);
|
|
}
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EDQUOT:
|
|
case EFBIG:
|
|
case EIO:
|
|
case ENOLINK:
|
|
case ENOSPC:
|
|
case ENOSTR:
|
|
case ENXIO:
|
|
case EPIPE:
|
|
case ERANGE:
|
|
case EFAULT:
|
|
case EROFS:
|
|
case EINVAL:
|
|
zfs_error_aux(hdl, "%s", strerror(error));
|
|
return (zfs_error(hdl, EZFS_BADBACKUP, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, error, errbuf));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dumps a backup of the given snapshot (incremental from fromsnap if it's not
|
|
* NULL) to the file descriptor specified by outfd.
|
|
*/
|
|
static int
|
|
dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj,
|
|
boolean_t fromorigin, int outfd, enum lzc_send_flags flags,
|
|
nvlist_t *debugnv)
|
|
{
|
|
zfs_cmd_t zc = {"\0"};
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
nvlist_t *thisdbg;
|
|
|
|
assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
|
|
assert(fromsnap_obj == 0 || !fromorigin);
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
zc.zc_cookie = outfd;
|
|
zc.zc_obj = fromorigin;
|
|
zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
|
|
zc.zc_fromobj = fromsnap_obj;
|
|
zc.zc_flags = flags;
|
|
|
|
if (debugnv != NULL) {
|
|
thisdbg = fnvlist_alloc();
|
|
if (fromsnap != NULL && fromsnap[0] != '\0')
|
|
fnvlist_add_string(thisdbg, "fromsnap", fromsnap);
|
|
}
|
|
|
|
if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) {
|
|
char errbuf[ERRBUFLEN];
|
|
int error = errno;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), "%s '%s'",
|
|
dgettext(TEXT_DOMAIN, "warning: cannot send"),
|
|
zhp->zfs_name);
|
|
|
|
if (debugnv != NULL) {
|
|
fnvlist_add_uint64(thisdbg, "error", error);
|
|
fnvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg);
|
|
fnvlist_free(thisdbg);
|
|
}
|
|
|
|
switch (error) {
|
|
case EXDEV:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not an earlier snapshot from the same fs"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
|
|
|
|
case EACCES:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"source key must be loaded"));
|
|
return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf));
|
|
|
|
case ENOENT:
|
|
if (zfs_dataset_exists(hdl, zc.zc_name,
|
|
ZFS_TYPE_SNAPSHOT)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental source (@%s) does not exist"),
|
|
zc.zc_value);
|
|
}
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EDQUOT:
|
|
case EFBIG:
|
|
case EIO:
|
|
case ENOLINK:
|
|
case ENOSPC:
|
|
case ENOSTR:
|
|
case ENXIO:
|
|
case EPIPE:
|
|
case ERANGE:
|
|
case EFAULT:
|
|
case EROFS:
|
|
case EINVAL:
|
|
zfs_error_aux(hdl, "%s", strerror(errno));
|
|
return (zfs_error(hdl, EZFS_BADBACKUP, errbuf));
|
|
case ENOTSUP:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"large blocks detected but large_blocks feature "
|
|
"is inactive; raw send unsupported"));
|
|
return (zfs_error(hdl, EZFS_NOTSUP, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
}
|
|
}
|
|
|
|
if (debugnv != NULL) {
|
|
fnvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg);
|
|
fnvlist_free(thisdbg);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
gather_holds(zfs_handle_t *zhp, send_dump_data_t *sdd)
|
|
{
|
|
assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
|
|
|
|
/*
|
|
* zfs_send() only sets snapholds for sends that need them,
|
|
* e.g. replication and doall.
|
|
*/
|
|
if (sdd->snapholds == NULL)
|
|
return;
|
|
|
|
fnvlist_add_string(sdd->snapholds, zhp->zfs_name, sdd->holdtag);
|
|
}
|
|
|
|
int
|
|
zfs_send_progress(zfs_handle_t *zhp, int fd, uint64_t *bytes_written,
|
|
uint64_t *blocks_visited)
|
|
{
|
|
zfs_cmd_t zc = {"\0"};
|
|
|
|
if (bytes_written != NULL)
|
|
*bytes_written = 0;
|
|
if (blocks_visited != NULL)
|
|
*blocks_visited = 0;
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
zc.zc_cookie = fd;
|
|
if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0)
|
|
return (errno);
|
|
if (bytes_written != NULL)
|
|
*bytes_written = zc.zc_cookie;
|
|
if (blocks_visited != NULL)
|
|
*blocks_visited = zc.zc_objset_type;
|
|
return (0);
|
|
}
|
|
|
|
static void *
|
|
send_progress_thread(void *arg)
|
|
{
|
|
progress_arg_t *pa = arg;
|
|
zfs_handle_t *zhp = pa->pa_zhp;
|
|
uint64_t bytes;
|
|
uint64_t blocks;
|
|
char buf[16];
|
|
time_t t;
|
|
struct tm tm;
|
|
int err;
|
|
|
|
if (!pa->pa_parsable) {
|
|
(void) fprintf(stderr,
|
|
"TIME %s %sSNAPSHOT %s\n",
|
|
pa->pa_estimate ? "BYTES" : " SENT",
|
|
pa->pa_verbosity >= 2 ? " BLOCKS " : "",
|
|
zhp->zfs_name);
|
|
}
|
|
|
|
/*
|
|
* Print the progress from ZFS_IOC_SEND_PROGRESS every second.
|
|
*/
|
|
for (;;) {
|
|
(void) sleep(1);
|
|
if ((err = zfs_send_progress(zhp, pa->pa_fd, &bytes,
|
|
&blocks)) != 0) {
|
|
if (err == EINTR || err == ENOENT)
|
|
return ((void *)0);
|
|
return ((void *)(uintptr_t)err);
|
|
}
|
|
|
|
(void) time(&t);
|
|
localtime_r(&t, &tm);
|
|
|
|
if (pa->pa_verbosity >= 2 && pa->pa_parsable) {
|
|
(void) fprintf(stderr,
|
|
"%02d:%02d:%02d\t%llu\t%llu\t%s\n",
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec,
|
|
(u_longlong_t)bytes, (u_longlong_t)blocks,
|
|
zhp->zfs_name);
|
|
} else if (pa->pa_verbosity >= 2) {
|
|
zfs_nicenum(bytes, buf, sizeof (buf));
|
|
(void) fprintf(stderr,
|
|
"%02d:%02d:%02d %5s %8llu %s\n",
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec,
|
|
buf, (u_longlong_t)blocks, zhp->zfs_name);
|
|
} else if (pa->pa_parsable) {
|
|
(void) fprintf(stderr, "%02d:%02d:%02d\t%llu\t%s\n",
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec,
|
|
(u_longlong_t)bytes, zhp->zfs_name);
|
|
} else {
|
|
zfs_nicebytes(bytes, buf, sizeof (buf));
|
|
(void) fprintf(stderr, "%02d:%02d:%02d %5s %s\n",
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec,
|
|
buf, zhp->zfs_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static boolean_t
|
|
send_progress_thread_exit(libzfs_handle_t *hdl, pthread_t ptid)
|
|
{
|
|
void *status = NULL;
|
|
(void) pthread_cancel(ptid);
|
|
(void) pthread_join(ptid, &status);
|
|
int error = (int)(uintptr_t)status;
|
|
if (error != 0 && status != PTHREAD_CANCELED)
|
|
return (zfs_standard_error(hdl, error,
|
|
dgettext(TEXT_DOMAIN, "progress thread exited nonzero")));
|
|
else
|
|
return (B_FALSE);
|
|
}
|
|
|
|
static void
|
|
send_print_verbose(FILE *fout, const char *tosnap, const char *fromsnap,
|
|
uint64_t size, boolean_t parsable)
|
|
{
|
|
if (parsable) {
|
|
if (fromsnap != NULL) {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"incremental\t%s\t%s"), fromsnap, tosnap);
|
|
} else {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"full\t%s"), tosnap);
|
|
}
|
|
(void) fprintf(fout, "\t%llu", (longlong_t)size);
|
|
} else {
|
|
if (fromsnap != NULL) {
|
|
if (strchr(fromsnap, '@') == NULL &&
|
|
strchr(fromsnap, '#') == NULL) {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"send from @%s to %s"), fromsnap, tosnap);
|
|
} else {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"send from %s to %s"), fromsnap, tosnap);
|
|
}
|
|
} else {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"full send of %s"), tosnap);
|
|
}
|
|
if (size != 0) {
|
|
char buf[16];
|
|
zfs_nicebytes(size, buf, sizeof (buf));
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
" estimated size is %s"), buf);
|
|
}
|
|
}
|
|
(void) fprintf(fout, "\n");
|
|
}
|
|
|
|
/*
|
|
* Send a single filesystem snapshot, updating the send dump data.
|
|
* This interface is intended for use as a zfs_iter_snapshots_sorted visitor.
|
|
*/
|
|
static int
|
|
dump_snapshot(zfs_handle_t *zhp, void *arg)
|
|
{
|
|
send_dump_data_t *sdd = arg;
|
|
progress_arg_t pa = { 0 };
|
|
pthread_t tid;
|
|
char *thissnap;
|
|
enum lzc_send_flags flags = 0;
|
|
int err;
|
|
boolean_t isfromsnap, istosnap, fromorigin;
|
|
boolean_t exclude = B_FALSE;
|
|
FILE *fout = sdd->std_out ? stdout : stderr;
|
|
|
|
err = 0;
|
|
thissnap = strchr(zhp->zfs_name, '@') + 1;
|
|
isfromsnap = (sdd->fromsnap != NULL &&
|
|
strcmp(sdd->fromsnap, thissnap) == 0);
|
|
|
|
if (!sdd->seenfrom && isfromsnap) {
|
|
gather_holds(zhp, sdd);
|
|
sdd->seenfrom = B_TRUE;
|
|
(void) strlcpy(sdd->prevsnap, thissnap, sizeof (sdd->prevsnap));
|
|
sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
if (sdd->seento || !sdd->seenfrom) {
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
istosnap = (strcmp(sdd->tosnap, thissnap) == 0);
|
|
if (istosnap)
|
|
sdd->seento = B_TRUE;
|
|
|
|
if (sdd->large_block)
|
|
flags |= LZC_SEND_FLAG_LARGE_BLOCK;
|
|
if (sdd->embed_data)
|
|
flags |= LZC_SEND_FLAG_EMBED_DATA;
|
|
if (sdd->compress)
|
|
flags |= LZC_SEND_FLAG_COMPRESS;
|
|
if (sdd->raw)
|
|
flags |= LZC_SEND_FLAG_RAW;
|
|
|
|
if (!sdd->doall && !isfromsnap && !istosnap) {
|
|
if (sdd->replicate) {
|
|
char *snapname;
|
|
nvlist_t *snapprops;
|
|
/*
|
|
* Filter out all intermediate snapshots except origin
|
|
* snapshots needed to replicate clones.
|
|
*/
|
|
nvlist_t *nvfs = fsavl_find(sdd->fsavl,
|
|
zhp->zfs_dmustats.dds_guid, &snapname);
|
|
|
|
if (nvfs != NULL) {
|
|
snapprops = fnvlist_lookup_nvlist(nvfs,
|
|
"snapprops");
|
|
snapprops = fnvlist_lookup_nvlist(snapprops,
|
|
thissnap);
|
|
exclude = !nvlist_exists(snapprops,
|
|
"is_clone_origin");
|
|
}
|
|
} else {
|
|
exclude = B_TRUE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If a filter function exists, call it to determine whether
|
|
* this snapshot will be sent.
|
|
*/
|
|
if (exclude || (sdd->filter_cb != NULL &&
|
|
sdd->filter_cb(zhp, sdd->filter_cb_arg) == B_FALSE)) {
|
|
/*
|
|
* This snapshot is filtered out. Don't send it, and don't
|
|
* set prevsnap_obj, so it will be as if this snapshot didn't
|
|
* exist, and the next accepted snapshot will be sent as
|
|
* an incremental from the last accepted one, or as the
|
|
* first (and full) snapshot in the case of a replication,
|
|
* non-incremental send.
|
|
*/
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
gather_holds(zhp, sdd);
|
|
fromorigin = sdd->prevsnap[0] == '\0' &&
|
|
(sdd->fromorigin || sdd->replicate);
|
|
|
|
if (sdd->verbosity != 0) {
|
|
uint64_t size = 0;
|
|
char fromds[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
if (sdd->prevsnap[0] != '\0') {
|
|
(void) strlcpy(fromds, zhp->zfs_name, sizeof (fromds));
|
|
*(strchr(fromds, '@') + 1) = '\0';
|
|
(void) strlcat(fromds, sdd->prevsnap, sizeof (fromds));
|
|
}
|
|
if (zfs_send_space(zhp, zhp->zfs_name,
|
|
sdd->prevsnap[0] ? fromds : NULL, flags, &size) == 0) {
|
|
send_print_verbose(fout, zhp->zfs_name,
|
|
sdd->prevsnap[0] ? sdd->prevsnap : NULL,
|
|
size, sdd->parsable);
|
|
sdd->size += size;
|
|
}
|
|
}
|
|
|
|
if (!sdd->dryrun) {
|
|
/*
|
|
* If progress reporting is requested, spawn a new thread to
|
|
* poll ZFS_IOC_SEND_PROGRESS at a regular interval.
|
|
*/
|
|
if (sdd->progress) {
|
|
pa.pa_zhp = zhp;
|
|
pa.pa_fd = sdd->outfd;
|
|
pa.pa_parsable = sdd->parsable;
|
|
pa.pa_estimate = B_FALSE;
|
|
pa.pa_verbosity = sdd->verbosity;
|
|
|
|
if ((err = pthread_create(&tid, NULL,
|
|
send_progress_thread, &pa)) != 0) {
|
|
zfs_close(zhp);
|
|
return (err);
|
|
}
|
|
}
|
|
|
|
err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj,
|
|
fromorigin, sdd->outfd, flags, sdd->debugnv);
|
|
|
|
if (sdd->progress &&
|
|
send_progress_thread_exit(zhp->zfs_hdl, tid))
|
|
return (-1);
|
|
}
|
|
|
|
(void) strcpy(sdd->prevsnap, thissnap);
|
|
sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
|
|
zfs_close(zhp);
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Send all snapshots for a filesystem, updating the send dump data.
|
|
*/
|
|
static int
|
|
dump_filesystem(zfs_handle_t *zhp, send_dump_data_t *sdd)
|
|
{
|
|
int rv = 0;
|
|
boolean_t missingfrom = B_FALSE;
|
|
zfs_cmd_t zc = {"\0"};
|
|
uint64_t min_txg = 0, max_txg = 0;
|
|
|
|
/*
|
|
* Make sure the tosnap exists.
|
|
*/
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s",
|
|
zhp->zfs_name, sdd->tosnap);
|
|
if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_STATS, &zc) != 0) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"WARNING: could not send %s@%s: does not exist\n"),
|
|
zhp->zfs_name, sdd->tosnap);
|
|
sdd->err = B_TRUE;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If this fs does not have fromsnap, and we're doing
|
|
* recursive, we need to send a full stream from the
|
|
* beginning (or an incremental from the origin if this
|
|
* is a clone). If we're doing non-recursive, then let
|
|
* them get the error.
|
|
*/
|
|
if (sdd->replicate && sdd->fromsnap) {
|
|
/*
|
|
* Make sure the fromsnap exists.
|
|
*/
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s",
|
|
zhp->zfs_name, sdd->fromsnap);
|
|
if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_STATS, &zc) != 0)
|
|
missingfrom = B_TRUE;
|
|
}
|
|
|
|
sdd->seenfrom = sdd->seento = B_FALSE;
|
|
sdd->prevsnap[0] = '\0';
|
|
sdd->prevsnap_obj = 0;
|
|
if (sdd->fromsnap == NULL || missingfrom)
|
|
sdd->seenfrom = B_TRUE;
|
|
|
|
/*
|
|
* Iterate through all snapshots and process the ones we will be
|
|
* sending. If we only have a "from" and "to" snapshot to deal
|
|
* with, we can avoid iterating through all the other snapshots.
|
|
*/
|
|
if (sdd->doall || sdd->replicate || sdd->tosnap == NULL) {
|
|
if (!sdd->replicate) {
|
|
if (sdd->fromsnap != NULL) {
|
|
min_txg = get_snap_txg(zhp->zfs_hdl,
|
|
zhp->zfs_name, sdd->fromsnap);
|
|
}
|
|
if (sdd->tosnap != NULL) {
|
|
max_txg = get_snap_txg(zhp->zfs_hdl,
|
|
zhp->zfs_name, sdd->tosnap);
|
|
}
|
|
}
|
|
rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, sdd,
|
|
min_txg, max_txg);
|
|
} else {
|
|
char snapname[MAXPATHLEN] = { 0 };
|
|
zfs_handle_t *snap;
|
|
|
|
/* Dump fromsnap. */
|
|
if (!sdd->seenfrom) {
|
|
(void) snprintf(snapname, sizeof (snapname),
|
|
"%s@%s", zhp->zfs_name, sdd->fromsnap);
|
|
snap = zfs_open(zhp->zfs_hdl, snapname,
|
|
ZFS_TYPE_SNAPSHOT);
|
|
if (snap != NULL)
|
|
rv = dump_snapshot(snap, sdd);
|
|
else
|
|
rv = -1;
|
|
}
|
|
|
|
/* Dump tosnap. */
|
|
if (rv == 0) {
|
|
(void) snprintf(snapname, sizeof (snapname),
|
|
"%s@%s", zhp->zfs_name, sdd->tosnap);
|
|
snap = zfs_open(zhp->zfs_hdl, snapname,
|
|
ZFS_TYPE_SNAPSHOT);
|
|
if (snap != NULL)
|
|
rv = dump_snapshot(snap, sdd);
|
|
else
|
|
rv = -1;
|
|
}
|
|
}
|
|
|
|
if (!sdd->seenfrom) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"WARNING: could not send %s@%s:\n"
|
|
"incremental source (%s@%s) does not exist\n"),
|
|
zhp->zfs_name, sdd->tosnap,
|
|
zhp->zfs_name, sdd->fromsnap);
|
|
sdd->err = B_TRUE;
|
|
} else if (!sdd->seento) {
|
|
if (sdd->fromsnap) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"WARNING: could not send %s@%s:\n"
|
|
"incremental source (%s@%s) "
|
|
"is not earlier than it\n"),
|
|
zhp->zfs_name, sdd->tosnap,
|
|
zhp->zfs_name, sdd->fromsnap);
|
|
} else {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"WARNING: "
|
|
"could not send %s@%s: does not exist\n"),
|
|
zhp->zfs_name, sdd->tosnap);
|
|
}
|
|
sdd->err = B_TRUE;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Send all snapshots for all filesystems in sdd.
|
|
*/
|
|
static int
|
|
dump_filesystems(zfs_handle_t *rzhp, send_dump_data_t *sdd)
|
|
{
|
|
nvpair_t *fspair;
|
|
boolean_t needagain, progress;
|
|
|
|
if (!sdd->replicate)
|
|
return (dump_filesystem(rzhp, sdd));
|
|
|
|
/* Mark the clone origin snapshots. */
|
|
for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
|
|
fspair = nvlist_next_nvpair(sdd->fss, fspair)) {
|
|
nvlist_t *nvfs;
|
|
uint64_t origin_guid = 0;
|
|
|
|
nvfs = fnvpair_value_nvlist(fspair);
|
|
(void) nvlist_lookup_uint64(nvfs, "origin", &origin_guid);
|
|
if (origin_guid != 0) {
|
|
char *snapname;
|
|
nvlist_t *origin_nv = fsavl_find(sdd->fsavl,
|
|
origin_guid, &snapname);
|
|
if (origin_nv != NULL) {
|
|
nvlist_t *snapprops;
|
|
snapprops = fnvlist_lookup_nvlist(origin_nv,
|
|
"snapprops");
|
|
snapprops = fnvlist_lookup_nvlist(snapprops,
|
|
snapname);
|
|
fnvlist_add_boolean(snapprops,
|
|
"is_clone_origin");
|
|
}
|
|
}
|
|
}
|
|
again:
|
|
needagain = progress = B_FALSE;
|
|
for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
|
|
fspair = nvlist_next_nvpair(sdd->fss, fspair)) {
|
|
nvlist_t *fslist, *parent_nv;
|
|
char *fsname;
|
|
zfs_handle_t *zhp;
|
|
int err;
|
|
uint64_t origin_guid = 0;
|
|
uint64_t parent_guid = 0;
|
|
|
|
fslist = fnvpair_value_nvlist(fspair);
|
|
if (nvlist_lookup_boolean(fslist, "sent") == 0)
|
|
continue;
|
|
|
|
fsname = fnvlist_lookup_string(fslist, "name");
|
|
(void) nvlist_lookup_uint64(fslist, "origin", &origin_guid);
|
|
(void) nvlist_lookup_uint64(fslist, "parentfromsnap",
|
|
&parent_guid);
|
|
|
|
if (parent_guid != 0) {
|
|
parent_nv = fsavl_find(sdd->fsavl, parent_guid, NULL);
|
|
if (!nvlist_exists(parent_nv, "sent")) {
|
|
/* Parent has not been sent; skip this one. */
|
|
needagain = B_TRUE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (origin_guid != 0) {
|
|
nvlist_t *origin_nv = fsavl_find(sdd->fsavl,
|
|
origin_guid, NULL);
|
|
if (origin_nv != NULL &&
|
|
!nvlist_exists(origin_nv, "sent")) {
|
|
/*
|
|
* Origin has not been sent yet;
|
|
* skip this clone.
|
|
*/
|
|
needagain = B_TRUE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
zhp = zfs_open(rzhp->zfs_hdl, fsname, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL)
|
|
return (-1);
|
|
err = dump_filesystem(zhp, sdd);
|
|
fnvlist_add_boolean(fslist, "sent");
|
|
progress = B_TRUE;
|
|
zfs_close(zhp);
|
|
if (err)
|
|
return (err);
|
|
}
|
|
if (needagain) {
|
|
assert(progress);
|
|
goto again;
|
|
}
|
|
|
|
/* Clean out the sent flags in case we reuse this fss. */
|
|
for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
|
|
fspair = nvlist_next_nvpair(sdd->fss, fspair)) {
|
|
nvlist_t *fslist;
|
|
|
|
fslist = fnvpair_value_nvlist(fspair);
|
|
(void) nvlist_remove_all(fslist, "sent");
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
nvlist_t *
|
|
zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl, const char *token)
|
|
{
|
|
unsigned int version;
|
|
int nread, i;
|
|
unsigned long long checksum, packed_len;
|
|
|
|
/*
|
|
* Decode token header, which is:
|
|
* <token version>-<checksum of payload>-<uncompressed payload length>
|
|
* Note that the only supported token version is 1.
|
|
*/
|
|
nread = sscanf(token, "%u-%llx-%llx-",
|
|
&version, &checksum, &packed_len);
|
|
if (nread != 3) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt (invalid format)"));
|
|
return (NULL);
|
|
}
|
|
|
|
if (version != ZFS_SEND_RESUME_TOKEN_VERSION) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt (invalid version %u)"),
|
|
version);
|
|
return (NULL);
|
|
}
|
|
|
|
/* Convert hexadecimal representation to binary. */
|
|
token = strrchr(token, '-') + 1;
|
|
int len = strlen(token) / 2;
|
|
unsigned char *compressed = zfs_alloc(hdl, len);
|
|
for (i = 0; i < len; i++) {
|
|
nread = sscanf(token + i * 2, "%2hhx", compressed + i);
|
|
if (nread != 1) {
|
|
free(compressed);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt "
|
|
"(payload is not hex-encoded)"));
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
/* Verify checksum. */
|
|
zio_cksum_t cksum;
|
|
fletcher_4_native_varsize(compressed, len, &cksum);
|
|
if (cksum.zc_word[0] != checksum) {
|
|
free(compressed);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt (incorrect checksum)"));
|
|
return (NULL);
|
|
}
|
|
|
|
/* Uncompress. */
|
|
void *packed = zfs_alloc(hdl, packed_len);
|
|
uLongf packed_len_long = packed_len;
|
|
if (uncompress(packed, &packed_len_long, compressed, len) != Z_OK ||
|
|
packed_len_long != packed_len) {
|
|
free(packed);
|
|
free(compressed);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt (decompression failed)"));
|
|
return (NULL);
|
|
}
|
|
|
|
/* Unpack nvlist. */
|
|
nvlist_t *nv;
|
|
int error = nvlist_unpack(packed, packed_len, &nv, KM_SLEEP);
|
|
free(packed);
|
|
free(compressed);
|
|
if (error != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt (nvlist_unpack failed)"));
|
|
return (NULL);
|
|
}
|
|
return (nv);
|
|
}
|
|
|
|
static enum lzc_send_flags
|
|
lzc_flags_from_sendflags(const sendflags_t *flags)
|
|
{
|
|
enum lzc_send_flags lzc_flags = 0;
|
|
|
|
if (flags->largeblock)
|
|
lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
|
|
if (flags->embed_data)
|
|
lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
|
|
if (flags->compress)
|
|
lzc_flags |= LZC_SEND_FLAG_COMPRESS;
|
|
if (flags->raw)
|
|
lzc_flags |= LZC_SEND_FLAG_RAW;
|
|
if (flags->saved)
|
|
lzc_flags |= LZC_SEND_FLAG_SAVED;
|
|
|
|
return (lzc_flags);
|
|
}
|
|
|
|
static int
|
|
estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
|
|
uint64_t resumeobj, uint64_t resumeoff, uint64_t bytes,
|
|
const char *redactbook, char *errbuf)
|
|
{
|
|
uint64_t size;
|
|
FILE *fout = flags->dryrun ? stdout : stderr;
|
|
progress_arg_t pa = { 0 };
|
|
int err = 0;
|
|
pthread_t ptid;
|
|
|
|
if (flags->progress) {
|
|
pa.pa_zhp = zhp;
|
|
pa.pa_fd = fd;
|
|
pa.pa_parsable = flags->parsable;
|
|
pa.pa_estimate = B_TRUE;
|
|
pa.pa_verbosity = flags->verbosity;
|
|
|
|
err = pthread_create(&ptid, NULL,
|
|
send_progress_thread, &pa);
|
|
if (err != 0) {
|
|
zfs_error_aux(zhp->zfs_hdl, "%s", strerror(errno));
|
|
return (zfs_error(zhp->zfs_hdl,
|
|
EZFS_THREADCREATEFAILED, errbuf));
|
|
}
|
|
}
|
|
|
|
err = lzc_send_space_resume_redacted(zhp->zfs_name, from,
|
|
lzc_flags_from_sendflags(flags), resumeobj, resumeoff, bytes,
|
|
redactbook, fd, &size);
|
|
|
|
if (flags->progress && send_progress_thread_exit(zhp->zfs_hdl, ptid))
|
|
return (-1);
|
|
|
|
if (err != 0) {
|
|
zfs_error_aux(zhp->zfs_hdl, "%s", strerror(err));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
|
|
errbuf));
|
|
}
|
|
send_print_verbose(fout, zhp->zfs_name, from, size,
|
|
flags->parsable);
|
|
|
|
if (flags->parsable) {
|
|
(void) fprintf(fout, "size\t%llu\n", (longlong_t)size);
|
|
} else {
|
|
char buf[16];
|
|
zfs_nicenum(size, buf, sizeof (buf));
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"total estimated size is %s\n"), buf);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static boolean_t
|
|
redact_snaps_contains(const uint64_t *snaps, uint64_t num_snaps, uint64_t guid)
|
|
{
|
|
for (int i = 0; i < num_snaps; i++) {
|
|
if (snaps[i] == guid)
|
|
return (B_TRUE);
|
|
}
|
|
return (B_FALSE);
|
|
}
|
|
|
|
static boolean_t
|
|
redact_snaps_equal(const uint64_t *snaps1, uint64_t num_snaps1,
|
|
const uint64_t *snaps2, uint64_t num_snaps2)
|
|
{
|
|
if (num_snaps1 != num_snaps2)
|
|
return (B_FALSE);
|
|
for (int i = 0; i < num_snaps1; i++) {
|
|
if (!redact_snaps_contains(snaps2, num_snaps2, snaps1[i]))
|
|
return (B_FALSE);
|
|
}
|
|
return (B_TRUE);
|
|
}
|
|
|
|
static int
|
|
get_bookmarks(const char *path, nvlist_t **bmarksp)
|
|
{
|
|
nvlist_t *props = fnvlist_alloc();
|
|
int error;
|
|
|
|
fnvlist_add_boolean(props, "redact_complete");
|
|
fnvlist_add_boolean(props, zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS));
|
|
error = lzc_get_bookmarks(path, props, bmarksp);
|
|
fnvlist_free(props);
|
|
return (error);
|
|
}
|
|
|
|
static nvpair_t *
|
|
find_redact_pair(nvlist_t *bmarks, const uint64_t *redact_snap_guids,
|
|
int num_redact_snaps)
|
|
{
|
|
nvpair_t *pair;
|
|
|
|
for (pair = nvlist_next_nvpair(bmarks, NULL); pair;
|
|
pair = nvlist_next_nvpair(bmarks, pair)) {
|
|
|
|
nvlist_t *bmark = fnvpair_value_nvlist(pair);
|
|
nvlist_t *vallist = fnvlist_lookup_nvlist(bmark,
|
|
zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS));
|
|
uint_t len = 0;
|
|
uint64_t *bmarksnaps = fnvlist_lookup_uint64_array(vallist,
|
|
ZPROP_VALUE, &len);
|
|
if (redact_snaps_equal(redact_snap_guids,
|
|
num_redact_snaps, bmarksnaps, len)) {
|
|
break;
|
|
}
|
|
}
|
|
return (pair);
|
|
}
|
|
|
|
static boolean_t
|
|
get_redact_complete(nvpair_t *pair)
|
|
{
|
|
nvlist_t *bmark = fnvpair_value_nvlist(pair);
|
|
nvlist_t *vallist = fnvlist_lookup_nvlist(bmark, "redact_complete");
|
|
boolean_t complete = fnvlist_lookup_boolean_value(vallist,
|
|
ZPROP_VALUE);
|
|
|
|
return (complete);
|
|
}
|
|
|
|
/*
|
|
* Check that the list of redaction snapshots in the bookmark matches the send
|
|
* we're resuming, and return whether or not it's complete.
|
|
*
|
|
* Note that the caller needs to free the contents of *bookname with free() if
|
|
* this function returns successfully.
|
|
*/
|
|
static int
|
|
find_redact_book(libzfs_handle_t *hdl, const char *path,
|
|
const uint64_t *redact_snap_guids, int num_redact_snaps,
|
|
char **bookname)
|
|
{
|
|
char errbuf[ERRBUFLEN];
|
|
nvlist_t *bmarks;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot resume send"));
|
|
|
|
int error = get_bookmarks(path, &bmarks);
|
|
if (error != 0) {
|
|
if (error == ESRCH) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"nonexistent redaction bookmark provided"));
|
|
} else if (error == ENOENT) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset to be sent no longer exists"));
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"unknown error: %s"), strerror(error));
|
|
}
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
nvpair_t *pair = find_redact_pair(bmarks, redact_snap_guids,
|
|
num_redact_snaps);
|
|
if (pair == NULL) {
|
|
fnvlist_free(bmarks);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"no appropriate redaction bookmark exists"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
boolean_t complete = get_redact_complete(pair);
|
|
if (!complete) {
|
|
fnvlist_free(bmarks);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incomplete redaction bookmark provided"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
*bookname = strndup(nvpair_name(pair), ZFS_MAX_DATASET_NAME_LEN);
|
|
ASSERT3P(*bookname, !=, NULL);
|
|
fnvlist_free(bmarks);
|
|
return (0);
|
|
}
|
|
|
|
static enum lzc_send_flags
|
|
lzc_flags_from_resume_nvl(nvlist_t *resume_nvl)
|
|
{
|
|
enum lzc_send_flags lzc_flags = 0;
|
|
|
|
if (nvlist_exists(resume_nvl, "largeblockok"))
|
|
lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
|
|
if (nvlist_exists(resume_nvl, "embedok"))
|
|
lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
|
|
if (nvlist_exists(resume_nvl, "compressok"))
|
|
lzc_flags |= LZC_SEND_FLAG_COMPRESS;
|
|
if (nvlist_exists(resume_nvl, "rawok"))
|
|
lzc_flags |= LZC_SEND_FLAG_RAW;
|
|
if (nvlist_exists(resume_nvl, "savedok"))
|
|
lzc_flags |= LZC_SEND_FLAG_SAVED;
|
|
|
|
return (lzc_flags);
|
|
}
|
|
|
|
static int
|
|
zfs_send_resume_impl_cb_impl(libzfs_handle_t *hdl, sendflags_t *flags,
|
|
int outfd, nvlist_t *resume_nvl)
|
|
{
|
|
char errbuf[ERRBUFLEN];
|
|
char *toname;
|
|
char *fromname = NULL;
|
|
uint64_t resumeobj, resumeoff, toguid, fromguid, bytes;
|
|
zfs_handle_t *zhp;
|
|
int error = 0;
|
|
char name[ZFS_MAX_DATASET_NAME_LEN];
|
|
FILE *fout = (flags->verbosity > 0 && flags->dryrun) ? stdout : stderr;
|
|
uint64_t *redact_snap_guids = NULL;
|
|
int num_redact_snaps = 0;
|
|
char *redact_book = NULL;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot resume send"));
|
|
|
|
if (flags->verbosity != 0) {
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"resume token contents:\n"));
|
|
nvlist_print(fout, resume_nvl);
|
|
}
|
|
|
|
if (nvlist_lookup_string(resume_nvl, "toname", &toname) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "object", &resumeobj) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "offset", &resumeoff) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "bytes", &bytes) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "toguid", &toguid) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"resume token is corrupt"));
|
|
return (zfs_error(hdl, EZFS_FAULT, errbuf));
|
|
}
|
|
fromguid = 0;
|
|
(void) nvlist_lookup_uint64(resume_nvl, "fromguid", &fromguid);
|
|
|
|
if (flags->saved) {
|
|
(void) strcpy(name, toname);
|
|
} else {
|
|
error = guid_to_name(hdl, toname, toguid, B_FALSE, name);
|
|
if (error != 0) {
|
|
if (zfs_dataset_exists(hdl, toname, ZFS_TYPE_DATASET)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' is no longer the same snapshot "
|
|
"used in the initial send"), toname);
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' used in the initial send no "
|
|
"longer exists"), toname);
|
|
}
|
|
return (zfs_error(hdl, EZFS_BADPATH, errbuf));
|
|
}
|
|
}
|
|
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"unable to access '%s'"), name);
|
|
return (zfs_error(hdl, EZFS_BADPATH, errbuf));
|
|
}
|
|
|
|
if (nvlist_lookup_uint64_array(resume_nvl, "book_redact_snaps",
|
|
&redact_snap_guids, (uint_t *)&num_redact_snaps) != 0) {
|
|
num_redact_snaps = -1;
|
|
}
|
|
|
|
if (fromguid != 0) {
|
|
if (guid_to_name_redact_snaps(hdl, toname, fromguid, B_TRUE,
|
|
redact_snap_guids, num_redact_snaps, name) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental source %#llx no longer exists"),
|
|
(longlong_t)fromguid);
|
|
return (zfs_error(hdl, EZFS_BADPATH, errbuf));
|
|
}
|
|
fromname = name;
|
|
}
|
|
|
|
redact_snap_guids = NULL;
|
|
|
|
if (nvlist_lookup_uint64_array(resume_nvl,
|
|
zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS), &redact_snap_guids,
|
|
(uint_t *)&num_redact_snaps) == 0) {
|
|
char path[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
(void) strlcpy(path, toname, sizeof (path));
|
|
char *at = strchr(path, '@');
|
|
ASSERT3P(at, !=, NULL);
|
|
|
|
*at = '\0';
|
|
|
|
if ((error = find_redact_book(hdl, path, redact_snap_guids,
|
|
num_redact_snaps, &redact_book)) != 0) {
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
enum lzc_send_flags lzc_flags = lzc_flags_from_sendflags(flags) |
|
|
lzc_flags_from_resume_nvl(resume_nvl);
|
|
|
|
if (flags->verbosity != 0) {
|
|
/*
|
|
* Some of these may have come from the resume token, set them
|
|
* here for size estimate purposes.
|
|
*/
|
|
sendflags_t tmpflags = *flags;
|
|
if (lzc_flags & LZC_SEND_FLAG_LARGE_BLOCK)
|
|
tmpflags.largeblock = B_TRUE;
|
|
if (lzc_flags & LZC_SEND_FLAG_COMPRESS)
|
|
tmpflags.compress = B_TRUE;
|
|
if (lzc_flags & LZC_SEND_FLAG_EMBED_DATA)
|
|
tmpflags.embed_data = B_TRUE;
|
|
if (lzc_flags & LZC_SEND_FLAG_RAW)
|
|
tmpflags.raw = B_TRUE;
|
|
if (lzc_flags & LZC_SEND_FLAG_SAVED)
|
|
tmpflags.saved = B_TRUE;
|
|
error = estimate_size(zhp, fromname, outfd, &tmpflags,
|
|
resumeobj, resumeoff, bytes, redact_book, errbuf);
|
|
}
|
|
|
|
if (!flags->dryrun) {
|
|
progress_arg_t pa = { 0 };
|
|
pthread_t tid;
|
|
/*
|
|
* If progress reporting is requested, spawn a new thread to
|
|
* poll ZFS_IOC_SEND_PROGRESS at a regular interval.
|
|
*/
|
|
if (flags->progress) {
|
|
pa.pa_zhp = zhp;
|
|
pa.pa_fd = outfd;
|
|
pa.pa_parsable = flags->parsable;
|
|
pa.pa_estimate = B_FALSE;
|
|
pa.pa_verbosity = flags->verbosity;
|
|
|
|
error = pthread_create(&tid, NULL,
|
|
send_progress_thread, &pa);
|
|
if (error != 0) {
|
|
if (redact_book != NULL)
|
|
free(redact_book);
|
|
zfs_close(zhp);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
error = lzc_send_resume_redacted(zhp->zfs_name, fromname, outfd,
|
|
lzc_flags, resumeobj, resumeoff, redact_book);
|
|
if (redact_book != NULL)
|
|
free(redact_book);
|
|
|
|
if (flags->progress && send_progress_thread_exit(hdl, tid))
|
|
return (-1);
|
|
|
|
char errbuf[ERRBUFLEN];
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"warning: cannot send '%s'"), zhp->zfs_name);
|
|
|
|
zfs_close(zhp);
|
|
|
|
switch (error) {
|
|
case 0:
|
|
return (0);
|
|
case EACCES:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"source key must be loaded"));
|
|
return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf));
|
|
case ESRCH:
|
|
if (lzc_exists(zhp->zfs_name)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental source could not be found"));
|
|
}
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EXDEV:
|
|
case ENOENT:
|
|
case EDQUOT:
|
|
case EFBIG:
|
|
case EIO:
|
|
case ENOLINK:
|
|
case ENOSPC:
|
|
case ENOSTR:
|
|
case ENXIO:
|
|
case EPIPE:
|
|
case ERANGE:
|
|
case EFAULT:
|
|
case EROFS:
|
|
zfs_error_aux(hdl, "%s", strerror(errno));
|
|
return (zfs_error(hdl, EZFS_BADBACKUP, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
}
|
|
} else {
|
|
if (redact_book != NULL)
|
|
free(redact_book);
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
struct zfs_send_resume_impl {
|
|
libzfs_handle_t *hdl;
|
|
sendflags_t *flags;
|
|
nvlist_t *resume_nvl;
|
|
};
|
|
|
|
static int
|
|
zfs_send_resume_impl_cb(int outfd, void *arg)
|
|
{
|
|
struct zfs_send_resume_impl *zsri = arg;
|
|
return (zfs_send_resume_impl_cb_impl(zsri->hdl, zsri->flags, outfd,
|
|
zsri->resume_nvl));
|
|
}
|
|
|
|
static int
|
|
zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
|
|
nvlist_t *resume_nvl)
|
|
{
|
|
struct zfs_send_resume_impl zsri = {
|
|
.hdl = hdl,
|
|
.flags = flags,
|
|
.resume_nvl = resume_nvl,
|
|
};
|
|
return (lzc_send_wrapper(zfs_send_resume_impl_cb, outfd, &zsri));
|
|
}
|
|
|
|
int
|
|
zfs_send_resume(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
|
|
const char *resume_token)
|
|
{
|
|
int ret;
|
|
char errbuf[ERRBUFLEN];
|
|
nvlist_t *resume_nvl;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot resume send"));
|
|
|
|
resume_nvl = zfs_send_resume_token_to_nvlist(hdl, resume_token);
|
|
if (resume_nvl == NULL) {
|
|
/*
|
|
* zfs_error_aux has already been set by
|
|
* zfs_send_resume_token_to_nvlist()
|
|
*/
|
|
return (zfs_error(hdl, EZFS_FAULT, errbuf));
|
|
}
|
|
|
|
ret = zfs_send_resume_impl(hdl, flags, outfd, resume_nvl);
|
|
fnvlist_free(resume_nvl);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
zfs_send_saved(zfs_handle_t *zhp, sendflags_t *flags, int outfd,
|
|
const char *resume_token)
|
|
{
|
|
int ret;
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
nvlist_t *saved_nvl = NULL, *resume_nvl = NULL;
|
|
uint64_t saved_guid = 0, resume_guid = 0;
|
|
uint64_t obj = 0, off = 0, bytes = 0;
|
|
char token_buf[ZFS_MAXPROPLEN];
|
|
char errbuf[ERRBUFLEN];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"saved send failed"));
|
|
|
|
ret = zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
|
|
token_buf, sizeof (token_buf), NULL, NULL, 0, B_TRUE);
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
saved_nvl = zfs_send_resume_token_to_nvlist(hdl, token_buf);
|
|
if (saved_nvl == NULL) {
|
|
/*
|
|
* zfs_error_aux has already been set by
|
|
* zfs_send_resume_token_to_nvlist()
|
|
*/
|
|
ret = zfs_error(hdl, EZFS_FAULT, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* If a resume token is provided we use the object and offset
|
|
* from that instead of the default, which starts from the
|
|
* beginning.
|
|
*/
|
|
if (resume_token != NULL) {
|
|
resume_nvl = zfs_send_resume_token_to_nvlist(hdl,
|
|
resume_token);
|
|
if (resume_nvl == NULL) {
|
|
ret = zfs_error(hdl, EZFS_FAULT, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(resume_nvl, "object", &obj) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "offset", &off) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "bytes", &bytes) != 0 ||
|
|
nvlist_lookup_uint64(resume_nvl, "toguid",
|
|
&resume_guid) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"provided resume token is corrupt"));
|
|
ret = zfs_error(hdl, EZFS_FAULT, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(saved_nvl, "toguid",
|
|
&saved_guid)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset's resume token is corrupt"));
|
|
ret = zfs_error(hdl, EZFS_FAULT, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (resume_guid != saved_guid) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"provided resume token does not match dataset"));
|
|
ret = zfs_error(hdl, EZFS_BADBACKUP, errbuf);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
(void) nvlist_remove_all(saved_nvl, "object");
|
|
fnvlist_add_uint64(saved_nvl, "object", obj);
|
|
|
|
(void) nvlist_remove_all(saved_nvl, "offset");
|
|
fnvlist_add_uint64(saved_nvl, "offset", off);
|
|
|
|
(void) nvlist_remove_all(saved_nvl, "bytes");
|
|
fnvlist_add_uint64(saved_nvl, "bytes", bytes);
|
|
|
|
(void) nvlist_remove_all(saved_nvl, "toname");
|
|
fnvlist_add_string(saved_nvl, "toname", zhp->zfs_name);
|
|
|
|
ret = zfs_send_resume_impl(hdl, flags, outfd, saved_nvl);
|
|
|
|
out:
|
|
fnvlist_free(saved_nvl);
|
|
fnvlist_free(resume_nvl);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* This function informs the target system that the recursive send is complete.
|
|
* The record is also expected in the case of a send -p.
|
|
*/
|
|
static int
|
|
send_conclusion_record(int fd, zio_cksum_t *zc)
|
|
{
|
|
dmu_replay_record_t drr = { 0 };
|
|
drr.drr_type = DRR_END;
|
|
if (zc != NULL)
|
|
drr.drr_u.drr_end.drr_checksum = *zc;
|
|
if (write(fd, &drr, sizeof (drr)) == -1) {
|
|
return (errno);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This function is responsible for sending the records that contain the
|
|
* necessary information for the target system's libzfs to be able to set the
|
|
* properties of the filesystem being received, or to be able to prepare for
|
|
* a recursive receive.
|
|
*
|
|
* The "zhp" argument is the handle of the snapshot we are sending
|
|
* (the "tosnap"). The "from" argument is the short snapshot name (the part
|
|
* after the @) of the incremental source.
|
|
*/
|
|
static int
|
|
send_prelim_records(zfs_handle_t *zhp, const char *from, int fd,
|
|
boolean_t gather_props, boolean_t recursive, boolean_t verbose,
|
|
boolean_t dryrun, boolean_t raw, boolean_t replicate, boolean_t skipmissing,
|
|
boolean_t backup, boolean_t holds, boolean_t props, boolean_t doall,
|
|
nvlist_t **fssp, avl_tree_t **fsavlp)
|
|
{
|
|
int err = 0;
|
|
char *packbuf = NULL;
|
|
size_t buflen = 0;
|
|
zio_cksum_t zc = { {0} };
|
|
int featureflags = 0;
|
|
/* name of filesystem/volume that contains snapshot we are sending */
|
|
char tofs[ZFS_MAX_DATASET_NAME_LEN];
|
|
/* short name of snap we are sending */
|
|
const char *tosnap = "";
|
|
|
|
char errbuf[ERRBUFLEN];
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"warning: cannot send '%s'"), zhp->zfs_name);
|
|
if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && zfs_prop_get_int(zhp,
|
|
ZFS_PROP_VERSION) >= ZPL_VERSION_SA) {
|
|
featureflags |= DMU_BACKUP_FEATURE_SA_SPILL;
|
|
}
|
|
|
|
if (holds)
|
|
featureflags |= DMU_BACKUP_FEATURE_HOLDS;
|
|
|
|
(void) strlcpy(tofs, zhp->zfs_name, ZFS_MAX_DATASET_NAME_LEN);
|
|
char *at = strchr(tofs, '@');
|
|
if (at != NULL) {
|
|
*at = '\0';
|
|
tosnap = at + 1;
|
|
}
|
|
|
|
if (gather_props) {
|
|
nvlist_t *hdrnv = fnvlist_alloc();
|
|
nvlist_t *fss = NULL;
|
|
|
|
if (from != NULL)
|
|
fnvlist_add_string(hdrnv, "fromsnap", from);
|
|
fnvlist_add_string(hdrnv, "tosnap", tosnap);
|
|
if (!recursive)
|
|
fnvlist_add_boolean(hdrnv, "not_recursive");
|
|
|
|
if (raw) {
|
|
fnvlist_add_boolean(hdrnv, "raw");
|
|
}
|
|
|
|
if ((err = gather_nvlist(zhp->zfs_hdl, tofs,
|
|
from, tosnap, recursive, raw, doall, replicate, skipmissing,
|
|
verbose, backup, holds, props, &fss, fsavlp)) != 0) {
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
|
|
errbuf));
|
|
}
|
|
/*
|
|
* Do not allow the size of the properties list to exceed
|
|
* the limit
|
|
*/
|
|
if ((fnvlist_size(fss) + fnvlist_size(hdrnv)) >
|
|
zhp->zfs_hdl->libzfs_max_nvlist) {
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN, "warning: cannot send '%s': "
|
|
"the size of the list of snapshots and properties "
|
|
"is too large to be received successfully.\n"
|
|
"Select a smaller number of snapshots to send.\n"),
|
|
zhp->zfs_name);
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_NOSPC,
|
|
errbuf));
|
|
}
|
|
fnvlist_add_nvlist(hdrnv, "fss", fss);
|
|
VERIFY0(nvlist_pack(hdrnv, &packbuf, &buflen, NV_ENCODE_XDR,
|
|
0));
|
|
if (fssp != NULL) {
|
|
*fssp = fss;
|
|
} else {
|
|
fnvlist_free(fss);
|
|
}
|
|
fnvlist_free(hdrnv);
|
|
}
|
|
|
|
if (!dryrun) {
|
|
dmu_replay_record_t drr = { 0 };
|
|
/* write first begin record */
|
|
drr.drr_type = DRR_BEGIN;
|
|
drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC;
|
|
DMU_SET_STREAM_HDRTYPE(drr.drr_u.drr_begin.
|
|
drr_versioninfo, DMU_COMPOUNDSTREAM);
|
|
DMU_SET_FEATUREFLAGS(drr.drr_u.drr_begin.
|
|
drr_versioninfo, featureflags);
|
|
if (snprintf(drr.drr_u.drr_begin.drr_toname,
|
|
sizeof (drr.drr_u.drr_begin.drr_toname), "%s@%s", tofs,
|
|
tosnap) >= sizeof (drr.drr_u.drr_begin.drr_toname)) {
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
|
|
errbuf));
|
|
}
|
|
drr.drr_payloadlen = buflen;
|
|
|
|
err = dump_record(&drr, packbuf, buflen, &zc, fd);
|
|
free(packbuf);
|
|
if (err != 0) {
|
|
zfs_error_aux(zhp->zfs_hdl, "%s", strerror(err));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
|
|
errbuf));
|
|
}
|
|
err = send_conclusion_record(fd, &zc);
|
|
if (err != 0) {
|
|
zfs_error_aux(zhp->zfs_hdl, "%s", strerror(err));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
|
|
errbuf));
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Generate a send stream. The "zhp" argument is the filesystem/volume
|
|
* that contains the snapshot to send. The "fromsnap" argument is the
|
|
* short name (the part after the '@') of the snapshot that is the
|
|
* incremental source to send from (if non-NULL). The "tosnap" argument
|
|
* is the short name of the snapshot to send.
|
|
*
|
|
* The content of the send stream is the snapshot identified by
|
|
* 'tosnap'. Incremental streams are requested in two ways:
|
|
* - from the snapshot identified by "fromsnap" (if non-null) or
|
|
* - from the origin of the dataset identified by zhp, which must
|
|
* be a clone. In this case, "fromsnap" is null and "fromorigin"
|
|
* is TRUE.
|
|
*
|
|
* The send stream is recursive (i.e. dumps a hierarchy of snapshots) and
|
|
* uses a special header (with a hdrtype field of DMU_COMPOUNDSTREAM)
|
|
* if "replicate" is set. If "doall" is set, dump all the intermediate
|
|
* snapshots. The DMU_COMPOUNDSTREAM header is used in the "doall"
|
|
* case too. If "props" is set, send properties.
|
|
*
|
|
* Pre-wrapped (cf. lzc_send_wrapper()).
|
|
*/
|
|
static int
|
|
zfs_send_cb_impl(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
|
|
sendflags_t *flags, int outfd, snapfilter_cb_t filter_func,
|
|
void *cb_arg, nvlist_t **debugnvp)
|
|
{
|
|
char errbuf[ERRBUFLEN];
|
|
send_dump_data_t sdd = { 0 };
|
|
int err = 0;
|
|
nvlist_t *fss = NULL;
|
|
avl_tree_t *fsavl = NULL;
|
|
static uint64_t holdseq;
|
|
int spa_version;
|
|
FILE *fout;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot send '%s'"), zhp->zfs_name);
|
|
|
|
if (fromsnap && fromsnap[0] == '\0') {
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"zero-length incremental source"));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
|
|
}
|
|
|
|
if (fromsnap) {
|
|
char full_fromsnap_name[ZFS_MAX_DATASET_NAME_LEN];
|
|
if (snprintf(full_fromsnap_name, sizeof (full_fromsnap_name),
|
|
"%s@%s", zhp->zfs_name, fromsnap) >=
|
|
sizeof (full_fromsnap_name)) {
|
|
err = EINVAL;
|
|
goto stderr_out;
|
|
}
|
|
zfs_handle_t *fromsnapn = zfs_open(zhp->zfs_hdl,
|
|
full_fromsnap_name, ZFS_TYPE_SNAPSHOT);
|
|
if (fromsnapn == NULL) {
|
|
err = -1;
|
|
goto err_out;
|
|
}
|
|
zfs_close(fromsnapn);
|
|
}
|
|
|
|
if (flags->replicate || flags->doall || flags->props ||
|
|
flags->holds || flags->backup) {
|
|
char full_tosnap_name[ZFS_MAX_DATASET_NAME_LEN];
|
|
if (snprintf(full_tosnap_name, sizeof (full_tosnap_name),
|
|
"%s@%s", zhp->zfs_name, tosnap) >=
|
|
sizeof (full_tosnap_name)) {
|
|
err = EINVAL;
|
|
goto stderr_out;
|
|
}
|
|
zfs_handle_t *tosnap = zfs_open(zhp->zfs_hdl,
|
|
full_tosnap_name, ZFS_TYPE_SNAPSHOT);
|
|
if (tosnap == NULL) {
|
|
err = -1;
|
|
goto err_out;
|
|
}
|
|
err = send_prelim_records(tosnap, fromsnap, outfd,
|
|
flags->replicate || flags->props || flags->holds,
|
|
flags->replicate, flags->verbosity > 0, flags->dryrun,
|
|
flags->raw, flags->replicate, flags->skipmissing,
|
|
flags->backup, flags->holds, flags->props, flags->doall,
|
|
&fss, &fsavl);
|
|
zfs_close(tosnap);
|
|
if (err != 0)
|
|
goto err_out;
|
|
}
|
|
|
|
/* dump each stream */
|
|
sdd.fromsnap = fromsnap;
|
|
sdd.tosnap = tosnap;
|
|
sdd.outfd = outfd;
|
|
sdd.replicate = flags->replicate;
|
|
sdd.doall = flags->doall;
|
|
sdd.fromorigin = flags->fromorigin;
|
|
sdd.fss = fss;
|
|
sdd.fsavl = fsavl;
|
|
sdd.verbosity = flags->verbosity;
|
|
sdd.parsable = flags->parsable;
|
|
sdd.progress = flags->progress;
|
|
sdd.dryrun = flags->dryrun;
|
|
sdd.large_block = flags->largeblock;
|
|
sdd.embed_data = flags->embed_data;
|
|
sdd.compress = flags->compress;
|
|
sdd.raw = flags->raw;
|
|
sdd.holds = flags->holds;
|
|
sdd.filter_cb = filter_func;
|
|
sdd.filter_cb_arg = cb_arg;
|
|
if (debugnvp)
|
|
sdd.debugnv = *debugnvp;
|
|
if (sdd.verbosity != 0 && sdd.dryrun)
|
|
sdd.std_out = B_TRUE;
|
|
fout = sdd.std_out ? stdout : stderr;
|
|
|
|
/*
|
|
* Some flags require that we place user holds on the datasets that are
|
|
* being sent so they don't get destroyed during the send. We can skip
|
|
* this step if the pool is imported read-only since the datasets cannot
|
|
* be destroyed.
|
|
*/
|
|
if (!flags->dryrun && !zpool_get_prop_int(zfs_get_pool_handle(zhp),
|
|
ZPOOL_PROP_READONLY, NULL) &&
|
|
zfs_spa_version(zhp, &spa_version) == 0 &&
|
|
spa_version >= SPA_VERSION_USERREFS &&
|
|
(flags->doall || flags->replicate)) {
|
|
++holdseq;
|
|
(void) snprintf(sdd.holdtag, sizeof (sdd.holdtag),
|
|
".send-%d-%llu", getpid(), (u_longlong_t)holdseq);
|
|
sdd.cleanup_fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC);
|
|
if (sdd.cleanup_fd < 0) {
|
|
err = errno;
|
|
goto stderr_out;
|
|
}
|
|
sdd.snapholds = fnvlist_alloc();
|
|
} else {
|
|
sdd.cleanup_fd = -1;
|
|
sdd.snapholds = NULL;
|
|
}
|
|
|
|
if (flags->verbosity != 0 || sdd.snapholds != NULL) {
|
|
/*
|
|
* Do a verbose no-op dry run to get all the verbose output
|
|
* or to gather snapshot hold's before generating any data,
|
|
* then do a non-verbose real run to generate the streams.
|
|
*/
|
|
sdd.dryrun = B_TRUE;
|
|
err = dump_filesystems(zhp, &sdd);
|
|
|
|
if (err != 0)
|
|
goto stderr_out;
|
|
|
|
if (flags->verbosity != 0) {
|
|
if (flags->parsable) {
|
|
(void) fprintf(fout, "size\t%llu\n",
|
|
(longlong_t)sdd.size);
|
|
} else {
|
|
char buf[16];
|
|
zfs_nicebytes(sdd.size, buf, sizeof (buf));
|
|
(void) fprintf(fout, dgettext(TEXT_DOMAIN,
|
|
"total estimated size is %s\n"), buf);
|
|
}
|
|
}
|
|
|
|
/* Ensure no snaps found is treated as an error. */
|
|
if (!sdd.seento) {
|
|
err = ENOENT;
|
|
goto err_out;
|
|
}
|
|
|
|
/* Skip the second run if dryrun was requested. */
|
|
if (flags->dryrun)
|
|
goto err_out;
|
|
|
|
if (sdd.snapholds != NULL) {
|
|
err = zfs_hold_nvl(zhp, sdd.cleanup_fd, sdd.snapholds);
|
|
if (err != 0)
|
|
goto stderr_out;
|
|
|
|
fnvlist_free(sdd.snapholds);
|
|
sdd.snapholds = NULL;
|
|
}
|
|
|
|
sdd.dryrun = B_FALSE;
|
|
sdd.verbosity = 0;
|
|
}
|
|
|
|
err = dump_filesystems(zhp, &sdd);
|
|
fsavl_destroy(fsavl);
|
|
fnvlist_free(fss);
|
|
|
|
/* Ensure no snaps found is treated as an error. */
|
|
if (err == 0 && !sdd.seento)
|
|
err = ENOENT;
|
|
|
|
if (sdd.cleanup_fd != -1) {
|
|
VERIFY(0 == close(sdd.cleanup_fd));
|
|
sdd.cleanup_fd = -1;
|
|
}
|
|
|
|
if (!flags->dryrun && (flags->replicate || flags->doall ||
|
|
flags->props || flags->backup || flags->holds)) {
|
|
/*
|
|
* write final end record. NB: want to do this even if
|
|
* there was some error, because it might not be totally
|
|
* failed.
|
|
*/
|
|
int err2 = send_conclusion_record(outfd, NULL);
|
|
if (err2 != 0)
|
|
return (zfs_standard_error(zhp->zfs_hdl, err2, errbuf));
|
|
}
|
|
|
|
return (err || sdd.err);
|
|
|
|
stderr_out:
|
|
err = zfs_standard_error(zhp->zfs_hdl, err, errbuf);
|
|
err_out:
|
|
fsavl_destroy(fsavl);
|
|
fnvlist_free(fss);
|
|
fnvlist_free(sdd.snapholds);
|
|
|
|
if (sdd.cleanup_fd != -1)
|
|
VERIFY(0 == close(sdd.cleanup_fd));
|
|
return (err);
|
|
}
|
|
|
|
struct zfs_send {
|
|
zfs_handle_t *zhp;
|
|
const char *fromsnap;
|
|
const char *tosnap;
|
|
sendflags_t *flags;
|
|
snapfilter_cb_t *filter_func;
|
|
void *cb_arg;
|
|
nvlist_t **debugnvp;
|
|
};
|
|
|
|
static int
|
|
zfs_send_cb(int outfd, void *arg)
|
|
{
|
|
struct zfs_send *zs = arg;
|
|
return (zfs_send_cb_impl(zs->zhp, zs->fromsnap, zs->tosnap, zs->flags,
|
|
outfd, zs->filter_func, zs->cb_arg, zs->debugnvp));
|
|
}
|
|
|
|
int
|
|
zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
|
|
sendflags_t *flags, int outfd, snapfilter_cb_t filter_func,
|
|
void *cb_arg, nvlist_t **debugnvp)
|
|
{
|
|
struct zfs_send arg = {
|
|
.zhp = zhp,
|
|
.fromsnap = fromsnap,
|
|
.tosnap = tosnap,
|
|
.flags = flags,
|
|
.filter_func = filter_func,
|
|
.cb_arg = cb_arg,
|
|
.debugnvp = debugnvp,
|
|
};
|
|
return (lzc_send_wrapper(zfs_send_cb, outfd, &arg));
|
|
}
|
|
|
|
|
|
static zfs_handle_t *
|
|
name_to_dir_handle(libzfs_handle_t *hdl, const char *snapname)
|
|
{
|
|
char dirname[ZFS_MAX_DATASET_NAME_LEN];
|
|
(void) strlcpy(dirname, snapname, ZFS_MAX_DATASET_NAME_LEN);
|
|
char *c = strchr(dirname, '@');
|
|
if (c != NULL)
|
|
*c = '\0';
|
|
return (zfs_open(hdl, dirname, ZFS_TYPE_DATASET));
|
|
}
|
|
|
|
/*
|
|
* Returns B_TRUE if earlier is an earlier snapshot in later's timeline; either
|
|
* an earlier snapshot in the same filesystem, or a snapshot before later's
|
|
* origin, or it's origin's origin, etc.
|
|
*/
|
|
static boolean_t
|
|
snapshot_is_before(zfs_handle_t *earlier, zfs_handle_t *later)
|
|
{
|
|
boolean_t ret;
|
|
uint64_t later_txg =
|
|
(later->zfs_type == ZFS_TYPE_FILESYSTEM ||
|
|
later->zfs_type == ZFS_TYPE_VOLUME ?
|
|
UINT64_MAX : zfs_prop_get_int(later, ZFS_PROP_CREATETXG));
|
|
uint64_t earlier_txg = zfs_prop_get_int(earlier, ZFS_PROP_CREATETXG);
|
|
|
|
if (earlier_txg >= later_txg)
|
|
return (B_FALSE);
|
|
|
|
zfs_handle_t *earlier_dir = name_to_dir_handle(earlier->zfs_hdl,
|
|
earlier->zfs_name);
|
|
zfs_handle_t *later_dir = name_to_dir_handle(later->zfs_hdl,
|
|
later->zfs_name);
|
|
|
|
if (strcmp(earlier_dir->zfs_name, later_dir->zfs_name) == 0) {
|
|
zfs_close(earlier_dir);
|
|
zfs_close(later_dir);
|
|
return (B_TRUE);
|
|
}
|
|
|
|
char clonename[ZFS_MAX_DATASET_NAME_LEN];
|
|
if (zfs_prop_get(later_dir, ZFS_PROP_ORIGIN, clonename,
|
|
ZFS_MAX_DATASET_NAME_LEN, NULL, NULL, 0, B_TRUE) != 0) {
|
|
zfs_close(earlier_dir);
|
|
zfs_close(later_dir);
|
|
return (B_FALSE);
|
|
}
|
|
|
|
zfs_handle_t *origin = zfs_open(earlier->zfs_hdl, clonename,
|
|
ZFS_TYPE_DATASET);
|
|
uint64_t origin_txg = zfs_prop_get_int(origin, ZFS_PROP_CREATETXG);
|
|
|
|
/*
|
|
* If "earlier" is exactly the origin, then
|
|
* snapshot_is_before(earlier, origin) will return false (because
|
|
* they're the same).
|
|
*/
|
|
if (origin_txg == earlier_txg &&
|
|
strcmp(origin->zfs_name, earlier->zfs_name) == 0) {
|
|
zfs_close(earlier_dir);
|
|
zfs_close(later_dir);
|
|
zfs_close(origin);
|
|
return (B_TRUE);
|
|
}
|
|
zfs_close(earlier_dir);
|
|
zfs_close(later_dir);
|
|
|
|
ret = snapshot_is_before(earlier, origin);
|
|
zfs_close(origin);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* The "zhp" argument is the handle of the dataset to send (typically a
|
|
* snapshot). The "from" argument is the full name of the snapshot or
|
|
* bookmark that is the incremental source.
|
|
*
|
|
* Pre-wrapped (cf. lzc_send_wrapper()).
|
|
*/
|
|
static int
|
|
zfs_send_one_cb_impl(zfs_handle_t *zhp, const char *from, int fd,
|
|
sendflags_t *flags, const char *redactbook)
|
|
{
|
|
int err;
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
char *name = zhp->zfs_name;
|
|
pthread_t ptid;
|
|
progress_arg_t pa = { 0 };
|
|
|
|
char errbuf[ERRBUFLEN];
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"warning: cannot send '%s'"), name);
|
|
|
|
if (from != NULL && strchr(from, '@')) {
|
|
zfs_handle_t *from_zhp = zfs_open(hdl, from,
|
|
ZFS_TYPE_DATASET);
|
|
if (from_zhp == NULL)
|
|
return (-1);
|
|
if (!snapshot_is_before(from_zhp, zhp)) {
|
|
zfs_close(from_zhp);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not an earlier snapshot from the same fs"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
|
|
}
|
|
zfs_close(from_zhp);
|
|
}
|
|
|
|
if (redactbook != NULL) {
|
|
char bookname[ZFS_MAX_DATASET_NAME_LEN];
|
|
nvlist_t *redact_snaps;
|
|
zfs_handle_t *book_zhp;
|
|
char *at, *pound;
|
|
int dsnamelen;
|
|
|
|
pound = strchr(redactbook, '#');
|
|
if (pound != NULL)
|
|
redactbook = pound + 1;
|
|
at = strchr(name, '@');
|
|
if (at == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"cannot do a redacted send to a filesystem"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
dsnamelen = at - name;
|
|
if (snprintf(bookname, sizeof (bookname), "%.*s#%s",
|
|
dsnamelen, name, redactbook)
|
|
>= sizeof (bookname)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid bookmark name"));
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
}
|
|
book_zhp = zfs_open(hdl, bookname, ZFS_TYPE_BOOKMARK);
|
|
if (book_zhp == NULL)
|
|
return (-1);
|
|
if (nvlist_lookup_nvlist(book_zhp->zfs_props,
|
|
zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS),
|
|
&redact_snaps) != 0 || redact_snaps == NULL) {
|
|
zfs_close(book_zhp);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not a redaction bookmark"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
zfs_close(book_zhp);
|
|
}
|
|
|
|
/*
|
|
* Send fs properties
|
|
*/
|
|
if (flags->props || flags->holds || flags->backup) {
|
|
/*
|
|
* Note: the header generated by send_prelim_records()
|
|
* assumes that the incremental source is in the same
|
|
* filesystem/volume as the target (which is a requirement
|
|
* when doing "zfs send -R"). But that isn't always the
|
|
* case here (e.g. send from snap in origin, or send from
|
|
* bookmark). We pass from=NULL, which will omit this
|
|
* information from the prelim records; it isn't used
|
|
* when receiving this type of stream.
|
|
*/
|
|
err = send_prelim_records(zhp, NULL, fd, B_TRUE, B_FALSE,
|
|
flags->verbosity > 0, flags->dryrun, flags->raw,
|
|
flags->replicate, B_FALSE, flags->backup, flags->holds,
|
|
flags->props, flags->doall, NULL, NULL);
|
|
if (err != 0)
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Perform size estimate if verbose was specified.
|
|
*/
|
|
if (flags->verbosity != 0) {
|
|
err = estimate_size(zhp, from, fd, flags, 0, 0, 0, redactbook,
|
|
errbuf);
|
|
if (err != 0)
|
|
return (err);
|
|
}
|
|
|
|
if (flags->dryrun)
|
|
return (0);
|
|
|
|
/*
|
|
* If progress reporting is requested, spawn a new thread to poll
|
|
* ZFS_IOC_SEND_PROGRESS at a regular interval.
|
|
*/
|
|
if (flags->progress) {
|
|
pa.pa_zhp = zhp;
|
|
pa.pa_fd = fd;
|
|
pa.pa_parsable = flags->parsable;
|
|
pa.pa_estimate = B_FALSE;
|
|
pa.pa_verbosity = flags->verbosity;
|
|
|
|
err = pthread_create(&ptid, NULL,
|
|
send_progress_thread, &pa);
|
|
if (err != 0) {
|
|
zfs_error_aux(zhp->zfs_hdl, "%s", strerror(errno));
|
|
return (zfs_error(zhp->zfs_hdl,
|
|
EZFS_THREADCREATEFAILED, errbuf));
|
|
}
|
|
}
|
|
|
|
err = lzc_send_redacted(name, from, fd,
|
|
lzc_flags_from_sendflags(flags), redactbook);
|
|
|
|
if (flags->progress && send_progress_thread_exit(hdl, ptid))
|
|
return (-1);
|
|
|
|
if (err == 0 && (flags->props || flags->holds || flags->backup)) {
|
|
/* Write the final end record. */
|
|
err = send_conclusion_record(fd, NULL);
|
|
if (err != 0)
|
|
return (zfs_standard_error(hdl, err, errbuf));
|
|
}
|
|
if (err != 0) {
|
|
switch (errno) {
|
|
case EXDEV:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not an earlier snapshot from the same fs"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
|
|
|
|
case ENOENT:
|
|
case ESRCH:
|
|
if (lzc_exists(name)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental source (%s) does not exist"),
|
|
from);
|
|
}
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EACCES:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset key must be loaded"));
|
|
return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf));
|
|
|
|
case EBUSY:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"target is busy; if a filesystem, "
|
|
"it must not be mounted"));
|
|
return (zfs_error(hdl, EZFS_BUSY, errbuf));
|
|
|
|
case EDQUOT:
|
|
case EFAULT:
|
|
case EFBIG:
|
|
case EINVAL:
|
|
case EIO:
|
|
case ENOLINK:
|
|
case ENOSPC:
|
|
case ENOSTR:
|
|
case ENXIO:
|
|
case EPIPE:
|
|
case ERANGE:
|
|
case EROFS:
|
|
zfs_error_aux(hdl, "%s", strerror(errno));
|
|
return (zfs_error(hdl, EZFS_BADBACKUP, errbuf));
|
|
case ENOTSUP:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"large blocks detected but large_blocks feature "
|
|
"is inactive; raw send unsupported"));
|
|
return (zfs_error(hdl, EZFS_NOTSUP, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
}
|
|
}
|
|
return (err != 0);
|
|
}
|
|
|
|
struct zfs_send_one {
|
|
zfs_handle_t *zhp;
|
|
const char *from;
|
|
sendflags_t *flags;
|
|
const char *redactbook;
|
|
};
|
|
|
|
static int
|
|
zfs_send_one_cb(int fd, void *arg)
|
|
{
|
|
struct zfs_send_one *zso = arg;
|
|
return (zfs_send_one_cb_impl(zso->zhp, zso->from, fd, zso->flags,
|
|
zso->redactbook));
|
|
}
|
|
|
|
int
|
|
zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
|
|
const char *redactbook)
|
|
{
|
|
struct zfs_send_one zso = {
|
|
.zhp = zhp,
|
|
.from = from,
|
|
.flags = flags,
|
|
.redactbook = redactbook,
|
|
};
|
|
return (lzc_send_wrapper(zfs_send_one_cb, fd, &zso));
|
|
}
|
|
|
|
/*
|
|
* Routines specific to "zfs recv"
|
|
*/
|
|
|
|
static int
|
|
recv_read(libzfs_handle_t *hdl, int fd, void *buf, int ilen,
|
|
boolean_t byteswap, zio_cksum_t *zc)
|
|
{
|
|
char *cp = buf;
|
|
int rv;
|
|
int len = ilen;
|
|
|
|
do {
|
|
rv = read(fd, cp, len);
|
|
cp += rv;
|
|
len -= rv;
|
|
} while (rv > 0);
|
|
|
|
if (rv < 0 || len != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"failed to read from stream"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, dgettext(TEXT_DOMAIN,
|
|
"cannot receive")));
|
|
}
|
|
|
|
if (zc) {
|
|
if (byteswap)
|
|
fletcher_4_incremental_byteswap(buf, ilen, zc);
|
|
else
|
|
fletcher_4_incremental_native(buf, ilen, zc);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
recv_read_nvlist(libzfs_handle_t *hdl, int fd, int len, nvlist_t **nvp,
|
|
boolean_t byteswap, zio_cksum_t *zc)
|
|
{
|
|
char *buf;
|
|
int err;
|
|
|
|
buf = zfs_alloc(hdl, len);
|
|
|
|
if (len > hdl->libzfs_max_nvlist) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "nvlist too large"));
|
|
free(buf);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
err = recv_read(hdl, fd, buf, len, byteswap, zc);
|
|
if (err != 0) {
|
|
free(buf);
|
|
return (err);
|
|
}
|
|
|
|
err = nvlist_unpack(buf, len, nvp, 0);
|
|
free(buf);
|
|
if (err != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (malformed nvlist)"));
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Returns the grand origin (origin of origin of origin...) of a given handle.
|
|
* If this dataset is not a clone, it simply returns a copy of the original
|
|
* handle.
|
|
*/
|
|
static zfs_handle_t *
|
|
recv_open_grand_origin(zfs_handle_t *zhp)
|
|
{
|
|
char origin[ZFS_MAX_DATASET_NAME_LEN];
|
|
zprop_source_t src;
|
|
zfs_handle_t *ozhp = zfs_handle_dup(zhp);
|
|
|
|
while (ozhp != NULL) {
|
|
if (zfs_prop_get(ozhp, ZFS_PROP_ORIGIN, origin,
|
|
sizeof (origin), &src, NULL, 0, B_FALSE) != 0)
|
|
break;
|
|
|
|
(void) zfs_close(ozhp);
|
|
ozhp = zfs_open(zhp->zfs_hdl, origin, ZFS_TYPE_FILESYSTEM);
|
|
}
|
|
|
|
return (ozhp);
|
|
}
|
|
|
|
static int
|
|
recv_rename_impl(zfs_handle_t *zhp, const char *name, const char *newname)
|
|
{
|
|
int err;
|
|
zfs_handle_t *ozhp = NULL;
|
|
|
|
/*
|
|
* Attempt to rename the dataset. If it fails with EACCES we have
|
|
* attempted to rename the dataset outside of its encryption root.
|
|
* Force the dataset to become an encryption root and try again.
|
|
*/
|
|
err = lzc_rename(name, newname);
|
|
if (err == EACCES) {
|
|
ozhp = recv_open_grand_origin(zhp);
|
|
if (ozhp == NULL) {
|
|
err = ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
err = lzc_change_key(ozhp->zfs_name, DCP_CMD_FORCE_NEW_KEY,
|
|
NULL, NULL, 0);
|
|
if (err != 0)
|
|
goto out;
|
|
|
|
err = lzc_rename(name, newname);
|
|
}
|
|
|
|
out:
|
|
if (ozhp != NULL)
|
|
zfs_close(ozhp);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
|
|
int baselen, char *newname, recvflags_t *flags)
|
|
{
|
|
static int seq;
|
|
int err;
|
|
prop_changelist_t *clp = NULL;
|
|
zfs_handle_t *zhp = NULL;
|
|
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
|
|
flags->force ? MS_FORCE : 0);
|
|
if (clp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
err = changelist_prefix(clp);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (tryname) {
|
|
(void) strcpy(newname, tryname);
|
|
if (flags->verbose) {
|
|
(void) printf("attempting rename %s to %s\n",
|
|
name, newname);
|
|
}
|
|
err = recv_rename_impl(zhp, name, newname);
|
|
if (err == 0)
|
|
changelist_rename(clp, name, tryname);
|
|
} else {
|
|
err = ENOENT;
|
|
}
|
|
|
|
if (err != 0 && strncmp(name + baselen, "recv-", 5) != 0) {
|
|
seq++;
|
|
|
|
(void) snprintf(newname, ZFS_MAX_DATASET_NAME_LEN,
|
|
"%.*srecv-%u-%u", baselen, name, getpid(), seq);
|
|
|
|
if (flags->verbose) {
|
|
(void) printf("failed - trying rename %s to %s\n",
|
|
name, newname);
|
|
}
|
|
err = recv_rename_impl(zhp, name, newname);
|
|
if (err == 0)
|
|
changelist_rename(clp, name, newname);
|
|
if (err && flags->verbose) {
|
|
(void) printf("failed (%u) - "
|
|
"will try again on next pass\n", errno);
|
|
}
|
|
err = EAGAIN;
|
|
} else if (flags->verbose) {
|
|
if (err == 0)
|
|
(void) printf("success\n");
|
|
else
|
|
(void) printf("failed (%u)\n", errno);
|
|
}
|
|
|
|
(void) changelist_postfix(clp);
|
|
|
|
out:
|
|
if (clp != NULL)
|
|
changelist_free(clp);
|
|
if (zhp != NULL)
|
|
zfs_close(zhp);
|
|
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
recv_promote(libzfs_handle_t *hdl, const char *fsname,
|
|
const char *origin_fsname, recvflags_t *flags)
|
|
{
|
|
int err;
|
|
zfs_cmd_t zc = {"\0"};
|
|
zfs_handle_t *zhp = NULL, *ozhp = NULL;
|
|
|
|
if (flags->verbose)
|
|
(void) printf("promoting %s\n", fsname);
|
|
|
|
(void) strlcpy(zc.zc_value, origin_fsname, sizeof (zc.zc_value));
|
|
(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name));
|
|
|
|
/*
|
|
* Attempt to promote the dataset. If it fails with EACCES the
|
|
* promotion would cause this dataset to leave its encryption root.
|
|
* Force the origin to become an encryption root and try again.
|
|
*/
|
|
err = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc);
|
|
if (err == EACCES) {
|
|
zhp = zfs_open(hdl, fsname, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
|
|
ozhp = recv_open_grand_origin(zhp);
|
|
if (ozhp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
|
|
err = lzc_change_key(ozhp->zfs_name, DCP_CMD_FORCE_NEW_KEY,
|
|
NULL, NULL, 0);
|
|
if (err != 0)
|
|
goto out;
|
|
|
|
err = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc);
|
|
}
|
|
|
|
out:
|
|
if (zhp != NULL)
|
|
zfs_close(zhp);
|
|
if (ozhp != NULL)
|
|
zfs_close(ozhp);
|
|
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
|
|
char *newname, recvflags_t *flags)
|
|
{
|
|
int err = 0;
|
|
prop_changelist_t *clp;
|
|
zfs_handle_t *zhp;
|
|
boolean_t defer = B_FALSE;
|
|
int spa_version;
|
|
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL)
|
|
return (-1);
|
|
zfs_type_t type = zfs_get_type(zhp);
|
|
if (type == ZFS_TYPE_SNAPSHOT &&
|
|
zfs_spa_version(zhp, &spa_version) == 0 &&
|
|
spa_version >= SPA_VERSION_USERREFS)
|
|
defer = B_TRUE;
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
|
|
flags->force ? MS_FORCE : 0);
|
|
zfs_close(zhp);
|
|
if (clp == NULL)
|
|
return (-1);
|
|
|
|
err = changelist_prefix(clp);
|
|
if (err)
|
|
return (err);
|
|
|
|
if (flags->verbose)
|
|
(void) printf("attempting destroy %s\n", name);
|
|
if (type == ZFS_TYPE_SNAPSHOT) {
|
|
nvlist_t *nv = fnvlist_alloc();
|
|
fnvlist_add_boolean(nv, name);
|
|
err = lzc_destroy_snaps(nv, defer, NULL);
|
|
fnvlist_free(nv);
|
|
} else {
|
|
err = lzc_destroy(name);
|
|
}
|
|
if (err == 0) {
|
|
if (flags->verbose)
|
|
(void) printf("success\n");
|
|
changelist_remove(clp, name);
|
|
}
|
|
|
|
(void) changelist_postfix(clp);
|
|
changelist_free(clp);
|
|
|
|
/*
|
|
* Deferred destroy might destroy the snapshot or only mark it to be
|
|
* destroyed later, and it returns success in either case.
|
|
*/
|
|
if (err != 0 || (defer && zfs_dataset_exists(hdl, name,
|
|
ZFS_TYPE_SNAPSHOT))) {
|
|
err = recv_rename(hdl, name, NULL, baselen, newname, flags);
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
typedef struct guid_to_name_data {
|
|
uint64_t guid;
|
|
boolean_t bookmark_ok;
|
|
char *name;
|
|
char *skip;
|
|
uint64_t *redact_snap_guids;
|
|
uint64_t num_redact_snaps;
|
|
} guid_to_name_data_t;
|
|
|
|
static boolean_t
|
|
redact_snaps_match(zfs_handle_t *zhp, guid_to_name_data_t *gtnd)
|
|
{
|
|
uint64_t *bmark_snaps;
|
|
uint_t bmark_num_snaps;
|
|
nvlist_t *nvl;
|
|
if (zhp->zfs_type != ZFS_TYPE_BOOKMARK)
|
|
return (B_FALSE);
|
|
|
|
nvl = fnvlist_lookup_nvlist(zhp->zfs_props,
|
|
zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS));
|
|
bmark_snaps = fnvlist_lookup_uint64_array(nvl, ZPROP_VALUE,
|
|
&bmark_num_snaps);
|
|
if (bmark_num_snaps != gtnd->num_redact_snaps)
|
|
return (B_FALSE);
|
|
int i = 0;
|
|
for (; i < bmark_num_snaps; i++) {
|
|
int j = 0;
|
|
for (; j < bmark_num_snaps; j++) {
|
|
if (bmark_snaps[i] == gtnd->redact_snap_guids[j])
|
|
break;
|
|
}
|
|
if (j == bmark_num_snaps)
|
|
break;
|
|
}
|
|
return (i == bmark_num_snaps);
|
|
}
|
|
|
|
static int
|
|
guid_to_name_cb(zfs_handle_t *zhp, void *arg)
|
|
{
|
|
guid_to_name_data_t *gtnd = arg;
|
|
const char *slash;
|
|
int err;
|
|
|
|
if (gtnd->skip != NULL &&
|
|
(slash = strrchr(zhp->zfs_name, '/')) != NULL &&
|
|
strcmp(slash + 1, gtnd->skip) == 0) {
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_GUID) == gtnd->guid &&
|
|
(gtnd->num_redact_snaps == -1 || redact_snaps_match(zhp, gtnd))) {
|
|
(void) strcpy(gtnd->name, zhp->zfs_name);
|
|
zfs_close(zhp);
|
|
return (EEXIST);
|
|
}
|
|
|
|
err = zfs_iter_children(zhp, guid_to_name_cb, gtnd);
|
|
if (err != EEXIST && gtnd->bookmark_ok)
|
|
err = zfs_iter_bookmarks(zhp, guid_to_name_cb, gtnd);
|
|
zfs_close(zhp);
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Attempt to find the local dataset associated with this guid. In the case of
|
|
* multiple matches, we attempt to find the "best" match by searching
|
|
* progressively larger portions of the hierarchy. This allows one to send a
|
|
* tree of datasets individually and guarantee that we will find the source
|
|
* guid within that hierarchy, even if there are multiple matches elsewhere.
|
|
*
|
|
* If num_redact_snaps is not -1, we attempt to find a redaction bookmark with
|
|
* the specified number of redaction snapshots. If num_redact_snaps isn't 0 or
|
|
* -1, then redact_snap_guids will be an array of the guids of the snapshots the
|
|
* redaction bookmark was created with. If num_redact_snaps is -1, then we will
|
|
* attempt to find a snapshot or bookmark (if bookmark_ok is passed) with the
|
|
* given guid. Note that a redaction bookmark can be returned if
|
|
* num_redact_snaps == -1.
|
|
*/
|
|
static int
|
|
guid_to_name_redact_snaps(libzfs_handle_t *hdl, const char *parent,
|
|
uint64_t guid, boolean_t bookmark_ok, uint64_t *redact_snap_guids,
|
|
uint64_t num_redact_snaps, char *name)
|
|
{
|
|
char pname[ZFS_MAX_DATASET_NAME_LEN];
|
|
guid_to_name_data_t gtnd;
|
|
|
|
gtnd.guid = guid;
|
|
gtnd.bookmark_ok = bookmark_ok;
|
|
gtnd.name = name;
|
|
gtnd.skip = NULL;
|
|
gtnd.redact_snap_guids = redact_snap_guids;
|
|
gtnd.num_redact_snaps = num_redact_snaps;
|
|
|
|
/*
|
|
* Search progressively larger portions of the hierarchy, starting
|
|
* with the filesystem specified by 'parent'. This will
|
|
* select the "most local" version of the origin snapshot in the case
|
|
* that there are multiple matching snapshots in the system.
|
|
*/
|
|
(void) strlcpy(pname, parent, sizeof (pname));
|
|
char *cp = strrchr(pname, '@');
|
|
if (cp == NULL)
|
|
cp = strchr(pname, '\0');
|
|
for (; cp != NULL; cp = strrchr(pname, '/')) {
|
|
/* Chop off the last component and open the parent */
|
|
*cp = '\0';
|
|
zfs_handle_t *zhp = make_dataset_handle(hdl, pname);
|
|
|
|
if (zhp == NULL)
|
|
continue;
|
|
int err = guid_to_name_cb(zfs_handle_dup(zhp), >nd);
|
|
if (err != EEXIST)
|
|
err = zfs_iter_children(zhp, guid_to_name_cb, >nd);
|
|
if (err != EEXIST && bookmark_ok)
|
|
err = zfs_iter_bookmarks(zhp, guid_to_name_cb, >nd);
|
|
zfs_close(zhp);
|
|
if (err == EEXIST)
|
|
return (0);
|
|
|
|
/*
|
|
* Remember the last portion of the dataset so we skip it next
|
|
* time through (as we've already searched that portion of the
|
|
* hierarchy).
|
|
*/
|
|
gtnd.skip = strrchr(pname, '/') + 1;
|
|
}
|
|
|
|
return (ENOENT);
|
|
}
|
|
|
|
static int
|
|
guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid,
|
|
boolean_t bookmark_ok, char *name)
|
|
{
|
|
return (guid_to_name_redact_snaps(hdl, parent, guid, bookmark_ok, NULL,
|
|
-1, name));
|
|
}
|
|
|
|
/*
|
|
* Return +1 if guid1 is before guid2, 0 if they are the same, and -1 if
|
|
* guid1 is after guid2.
|
|
*/
|
|
static int
|
|
created_before(libzfs_handle_t *hdl, avl_tree_t *avl,
|
|
uint64_t guid1, uint64_t guid2)
|
|
{
|
|
nvlist_t *nvfs;
|
|
char *fsname = NULL, *snapname = NULL;
|
|
char buf[ZFS_MAX_DATASET_NAME_LEN];
|
|
int rv;
|
|
zfs_handle_t *guid1hdl, *guid2hdl;
|
|
uint64_t create1, create2;
|
|
|
|
if (guid2 == 0)
|
|
return (0);
|
|
if (guid1 == 0)
|
|
return (1);
|
|
|
|
nvfs = fsavl_find(avl, guid1, &snapname);
|
|
fsname = fnvlist_lookup_string(nvfs, "name");
|
|
(void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname);
|
|
guid1hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT);
|
|
if (guid1hdl == NULL)
|
|
return (-1);
|
|
|
|
nvfs = fsavl_find(avl, guid2, &snapname);
|
|
fsname = fnvlist_lookup_string(nvfs, "name");
|
|
(void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname);
|
|
guid2hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT);
|
|
if (guid2hdl == NULL) {
|
|
zfs_close(guid1hdl);
|
|
return (-1);
|
|
}
|
|
|
|
create1 = zfs_prop_get_int(guid1hdl, ZFS_PROP_CREATETXG);
|
|
create2 = zfs_prop_get_int(guid2hdl, ZFS_PROP_CREATETXG);
|
|
|
|
if (create1 < create2)
|
|
rv = -1;
|
|
else if (create1 > create2)
|
|
rv = +1;
|
|
else
|
|
rv = 0;
|
|
|
|
zfs_close(guid1hdl);
|
|
zfs_close(guid2hdl);
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* This function reestablishes the hierarchy of encryption roots after a
|
|
* recursive incremental receive has completed. This must be done after the
|
|
* second call to recv_incremental_replication() has renamed and promoted all
|
|
* sent datasets to their final locations in the dataset hierarchy.
|
|
*/
|
|
static int
|
|
recv_fix_encryption_hierarchy(libzfs_handle_t *hdl, const char *top_zfs,
|
|
nvlist_t *stream_nv)
|
|
{
|
|
int err;
|
|
nvpair_t *fselem = NULL;
|
|
nvlist_t *stream_fss;
|
|
|
|
stream_fss = fnvlist_lookup_nvlist(stream_nv, "fss");
|
|
|
|
while ((fselem = nvlist_next_nvpair(stream_fss, fselem)) != NULL) {
|
|
zfs_handle_t *zhp = NULL;
|
|
uint64_t crypt;
|
|
nvlist_t *snaps, *props, *stream_nvfs = NULL;
|
|
nvpair_t *snapel = NULL;
|
|
boolean_t is_encroot, is_clone, stream_encroot;
|
|
char *cp;
|
|
char *stream_keylocation = NULL;
|
|
char keylocation[MAXNAMELEN];
|
|
char fsname[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
keylocation[0] = '\0';
|
|
stream_nvfs = fnvpair_value_nvlist(fselem);
|
|
snaps = fnvlist_lookup_nvlist(stream_nvfs, "snaps");
|
|
props = fnvlist_lookup_nvlist(stream_nvfs, "props");
|
|
stream_encroot = nvlist_exists(stream_nvfs, "is_encroot");
|
|
|
|
/* find a snapshot from the stream that exists locally */
|
|
err = ENOENT;
|
|
while ((snapel = nvlist_next_nvpair(snaps, snapel)) != NULL) {
|
|
uint64_t guid;
|
|
|
|
guid = fnvpair_value_uint64(snapel);
|
|
err = guid_to_name(hdl, top_zfs, guid, B_FALSE,
|
|
fsname);
|
|
if (err == 0)
|
|
break;
|
|
}
|
|
|
|
if (err != 0)
|
|
continue;
|
|
|
|
cp = strchr(fsname, '@');
|
|
if (cp != NULL)
|
|
*cp = '\0';
|
|
|
|
zhp = zfs_open(hdl, fsname, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
err = ENOENT;
|
|
goto error;
|
|
}
|
|
|
|
crypt = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION);
|
|
is_clone = zhp->zfs_dmustats.dds_origin[0] != '\0';
|
|
(void) zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
|
|
|
|
/* we don't need to do anything for unencrypted datasets */
|
|
if (crypt == ZIO_CRYPT_OFF) {
|
|
zfs_close(zhp);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If the dataset is flagged as an encryption root, was not
|
|
* received as a clone and is not currently an encryption root,
|
|
* force it to become one. Fixup the keylocation if necessary.
|
|
*/
|
|
if (stream_encroot) {
|
|
if (!is_clone && !is_encroot) {
|
|
err = lzc_change_key(fsname,
|
|
DCP_CMD_FORCE_NEW_KEY, NULL, NULL, 0);
|
|
if (err != 0) {
|
|
zfs_close(zhp);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
stream_keylocation = fnvlist_lookup_string(props,
|
|
zfs_prop_to_name(ZFS_PROP_KEYLOCATION));
|
|
|
|
/*
|
|
* Refresh the properties in case the call to
|
|
* lzc_change_key() changed the value.
|
|
*/
|
|
zfs_refresh_properties(zhp);
|
|
err = zfs_prop_get(zhp, ZFS_PROP_KEYLOCATION,
|
|
keylocation, sizeof (keylocation), NULL, NULL,
|
|
0, B_TRUE);
|
|
if (err != 0) {
|
|
zfs_close(zhp);
|
|
goto error;
|
|
}
|
|
|
|
if (strcmp(keylocation, stream_keylocation) != 0) {
|
|
err = zfs_prop_set(zhp,
|
|
zfs_prop_to_name(ZFS_PROP_KEYLOCATION),
|
|
stream_keylocation);
|
|
if (err != 0) {
|
|
zfs_close(zhp);
|
|
goto error;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the dataset is not flagged as an encryption root and is
|
|
* currently an encryption root, force it to inherit from its
|
|
* parent. The root of a raw send should never be
|
|
* force-inherited.
|
|
*/
|
|
if (!stream_encroot && is_encroot &&
|
|
strcmp(top_zfs, fsname) != 0) {
|
|
err = lzc_change_key(fsname, DCP_CMD_FORCE_INHERIT,
|
|
NULL, NULL, 0);
|
|
if (err != 0) {
|
|
zfs_close(zhp);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
}
|
|
|
|
return (0);
|
|
|
|
error:
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs,
|
|
recvflags_t *flags, nvlist_t *stream_nv, avl_tree_t *stream_avl,
|
|
nvlist_t *renamed)
|
|
{
|
|
nvlist_t *local_nv, *deleted = NULL;
|
|
avl_tree_t *local_avl;
|
|
nvpair_t *fselem, *nextfselem;
|
|
char *fromsnap;
|
|
char newname[ZFS_MAX_DATASET_NAME_LEN];
|
|
char guidname[32];
|
|
int error;
|
|
boolean_t needagain, progress, recursive;
|
|
char *s1, *s2;
|
|
|
|
fromsnap = fnvlist_lookup_string(stream_nv, "fromsnap");
|
|
|
|
recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
|
|
ENOENT);
|
|
|
|
if (flags->dryrun)
|
|
return (0);
|
|
|
|
again:
|
|
needagain = progress = B_FALSE;
|
|
|
|
deleted = fnvlist_alloc();
|
|
|
|
if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL,
|
|
recursive, B_TRUE, B_FALSE, recursive, B_FALSE, B_FALSE, B_FALSE,
|
|
B_FALSE, B_TRUE, &local_nv, &local_avl)) != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Process deletes and renames
|
|
*/
|
|
for (fselem = nvlist_next_nvpair(local_nv, NULL);
|
|
fselem; fselem = nextfselem) {
|
|
nvlist_t *nvfs, *snaps;
|
|
nvlist_t *stream_nvfs = NULL;
|
|
nvpair_t *snapelem, *nextsnapelem;
|
|
uint64_t fromguid = 0;
|
|
uint64_t originguid = 0;
|
|
uint64_t stream_originguid = 0;
|
|
uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid;
|
|
char *fsname, *stream_fsname;
|
|
|
|
nextfselem = nvlist_next_nvpair(local_nv, fselem);
|
|
|
|
nvfs = fnvpair_value_nvlist(fselem);
|
|
snaps = fnvlist_lookup_nvlist(nvfs, "snaps");
|
|
fsname = fnvlist_lookup_string(nvfs, "name");
|
|
parent_fromsnap_guid = fnvlist_lookup_uint64(nvfs,
|
|
"parentfromsnap");
|
|
(void) nvlist_lookup_uint64(nvfs, "origin", &originguid);
|
|
|
|
/*
|
|
* First find the stream's fs, so we can check for
|
|
* a different origin (due to "zfs promote")
|
|
*/
|
|
for (snapelem = nvlist_next_nvpair(snaps, NULL);
|
|
snapelem; snapelem = nvlist_next_nvpair(snaps, snapelem)) {
|
|
uint64_t thisguid;
|
|
|
|
thisguid = fnvpair_value_uint64(snapelem);
|
|
stream_nvfs = fsavl_find(stream_avl, thisguid, NULL);
|
|
|
|
if (stream_nvfs != NULL)
|
|
break;
|
|
}
|
|
|
|
/* check for promote */
|
|
(void) nvlist_lookup_uint64(stream_nvfs, "origin",
|
|
&stream_originguid);
|
|
if (stream_nvfs && originguid != stream_originguid) {
|
|
switch (created_before(hdl, local_avl,
|
|
stream_originguid, originguid)) {
|
|
case 1: {
|
|
/* promote it! */
|
|
nvlist_t *origin_nvfs;
|
|
char *origin_fsname;
|
|
|
|
origin_nvfs = fsavl_find(local_avl, originguid,
|
|
NULL);
|
|
origin_fsname = fnvlist_lookup_string(
|
|
origin_nvfs, "name");
|
|
error = recv_promote(hdl, fsname, origin_fsname,
|
|
flags);
|
|
if (error == 0)
|
|
progress = B_TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
case -1:
|
|
fsavl_destroy(local_avl);
|
|
fnvlist_free(local_nv);
|
|
return (-1);
|
|
}
|
|
/*
|
|
* We had/have the wrong origin, therefore our
|
|
* list of snapshots is wrong. Need to handle
|
|
* them on the next pass.
|
|
*/
|
|
needagain = B_TRUE;
|
|
continue;
|
|
}
|
|
|
|
for (snapelem = nvlist_next_nvpair(snaps, NULL);
|
|
snapelem; snapelem = nextsnapelem) {
|
|
uint64_t thisguid;
|
|
char *stream_snapname;
|
|
nvlist_t *found, *props;
|
|
|
|
nextsnapelem = nvlist_next_nvpair(snaps, snapelem);
|
|
|
|
thisguid = fnvpair_value_uint64(snapelem);
|
|
found = fsavl_find(stream_avl, thisguid,
|
|
&stream_snapname);
|
|
|
|
/* check for delete */
|
|
if (found == NULL) {
|
|
char name[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
if (!flags->force)
|
|
continue;
|
|
|
|
(void) snprintf(name, sizeof (name), "%s@%s",
|
|
fsname, nvpair_name(snapelem));
|
|
|
|
error = recv_destroy(hdl, name,
|
|
strlen(fsname)+1, newname, flags);
|
|
if (error)
|
|
needagain = B_TRUE;
|
|
else
|
|
progress = B_TRUE;
|
|
sprintf(guidname, "%llu",
|
|
(u_longlong_t)thisguid);
|
|
nvlist_add_boolean(deleted, guidname);
|
|
continue;
|
|
}
|
|
|
|
stream_nvfs = found;
|
|
|
|
if (0 == nvlist_lookup_nvlist(stream_nvfs, "snapprops",
|
|
&props) && 0 == nvlist_lookup_nvlist(props,
|
|
stream_snapname, &props)) {
|
|
zfs_cmd_t zc = {"\0"};
|
|
|
|
zc.zc_cookie = B_TRUE; /* received */
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name),
|
|
"%s@%s", fsname, nvpair_name(snapelem));
|
|
zcmd_write_src_nvlist(hdl, &zc, props);
|
|
(void) zfs_ioctl(hdl,
|
|
ZFS_IOC_SET_PROP, &zc);
|
|
zcmd_free_nvlists(&zc);
|
|
}
|
|
|
|
/* check for different snapname */
|
|
if (strcmp(nvpair_name(snapelem),
|
|
stream_snapname) != 0) {
|
|
char name[ZFS_MAX_DATASET_NAME_LEN];
|
|
char tryname[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
(void) snprintf(name, sizeof (name), "%s@%s",
|
|
fsname, nvpair_name(snapelem));
|
|
(void) snprintf(tryname, sizeof (name), "%s@%s",
|
|
fsname, stream_snapname);
|
|
|
|
error = recv_rename(hdl, name, tryname,
|
|
strlen(fsname)+1, newname, flags);
|
|
if (error)
|
|
needagain = B_TRUE;
|
|
else
|
|
progress = B_TRUE;
|
|
}
|
|
|
|
if (strcmp(stream_snapname, fromsnap) == 0)
|
|
fromguid = thisguid;
|
|
}
|
|
|
|
/* check for delete */
|
|
if (stream_nvfs == NULL) {
|
|
if (!flags->force)
|
|
continue;
|
|
|
|
error = recv_destroy(hdl, fsname, strlen(tofs)+1,
|
|
newname, flags);
|
|
if (error)
|
|
needagain = B_TRUE;
|
|
else
|
|
progress = B_TRUE;
|
|
sprintf(guidname, "%llu",
|
|
(u_longlong_t)parent_fromsnap_guid);
|
|
nvlist_add_boolean(deleted, guidname);
|
|
continue;
|
|
}
|
|
|
|
if (fromguid == 0) {
|
|
if (flags->verbose) {
|
|
(void) printf("local fs %s does not have "
|
|
"fromsnap (%s in stream); must have "
|
|
"been deleted locally; ignoring\n",
|
|
fsname, fromsnap);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
stream_fsname = fnvlist_lookup_string(stream_nvfs, "name");
|
|
stream_parent_fromsnap_guid = fnvlist_lookup_uint64(
|
|
stream_nvfs, "parentfromsnap");
|
|
|
|
s1 = strrchr(fsname, '/');
|
|
s2 = strrchr(stream_fsname, '/');
|
|
|
|
/*
|
|
* Check if we're going to rename based on parent guid change
|
|
* and the current parent guid was also deleted. If it was then
|
|
* rename will fail and is likely unneeded, so avoid this and
|
|
* force an early retry to determine the new
|
|
* parent_fromsnap_guid.
|
|
*/
|
|
if (stream_parent_fromsnap_guid != 0 &&
|
|
parent_fromsnap_guid != 0 &&
|
|
stream_parent_fromsnap_guid != parent_fromsnap_guid) {
|
|
sprintf(guidname, "%llu",
|
|
(u_longlong_t)parent_fromsnap_guid);
|
|
if (nvlist_exists(deleted, guidname)) {
|
|
progress = B_TRUE;
|
|
needagain = B_TRUE;
|
|
goto doagain;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for rename. If the exact receive path is specified, it
|
|
* does not count as a rename, but we still need to check the
|
|
* datasets beneath it.
|
|
*/
|
|
if ((stream_parent_fromsnap_guid != 0 &&
|
|
parent_fromsnap_guid != 0 &&
|
|
stream_parent_fromsnap_guid != parent_fromsnap_guid) ||
|
|
((flags->isprefix || strcmp(tofs, fsname) != 0) &&
|
|
(s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) {
|
|
nvlist_t *parent;
|
|
char tryname[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
parent = fsavl_find(local_avl,
|
|
stream_parent_fromsnap_guid, NULL);
|
|
/*
|
|
* NB: parent might not be found if we used the
|
|
* tosnap for stream_parent_fromsnap_guid,
|
|
* because the parent is a newly-created fs;
|
|
* we'll be able to rename it after we recv the
|
|
* new fs.
|
|
*/
|
|
if (parent != NULL) {
|
|
char *pname;
|
|
|
|
pname = fnvlist_lookup_string(parent, "name");
|
|
(void) snprintf(tryname, sizeof (tryname),
|
|
"%s%s", pname, strrchr(stream_fsname, '/'));
|
|
} else {
|
|
tryname[0] = '\0';
|
|
if (flags->verbose) {
|
|
(void) printf("local fs %s new parent "
|
|
"not found\n", fsname);
|
|
}
|
|
}
|
|
|
|
newname[0] = '\0';
|
|
|
|
error = recv_rename(hdl, fsname, tryname,
|
|
strlen(tofs)+1, newname, flags);
|
|
|
|
if (renamed != NULL && newname[0] != '\0') {
|
|
fnvlist_add_boolean(renamed, newname);
|
|
}
|
|
|
|
if (error)
|
|
needagain = B_TRUE;
|
|
else
|
|
progress = B_TRUE;
|
|
}
|
|
}
|
|
|
|
doagain:
|
|
fsavl_destroy(local_avl);
|
|
fnvlist_free(local_nv);
|
|
fnvlist_free(deleted);
|
|
|
|
if (needagain && progress) {
|
|
/* do another pass to fix up temporary names */
|
|
if (flags->verbose)
|
|
(void) printf("another pass:\n");
|
|
goto again;
|
|
}
|
|
|
|
return (needagain || error != 0);
|
|
}
|
|
|
|
static int
|
|
zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
|
|
recvflags_t *flags, dmu_replay_record_t *drr, zio_cksum_t *zc,
|
|
char **top_zfs, nvlist_t *cmdprops)
|
|
{
|
|
nvlist_t *stream_nv = NULL;
|
|
avl_tree_t *stream_avl = NULL;
|
|
char *fromsnap = NULL;
|
|
char *sendsnap = NULL;
|
|
char *cp;
|
|
char tofs[ZFS_MAX_DATASET_NAME_LEN];
|
|
char sendfs[ZFS_MAX_DATASET_NAME_LEN];
|
|
char errbuf[ERRBUFLEN];
|
|
dmu_replay_record_t drre;
|
|
int error;
|
|
boolean_t anyerr = B_FALSE;
|
|
boolean_t softerr = B_FALSE;
|
|
boolean_t recursive, raw;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive"));
|
|
|
|
assert(drr->drr_type == DRR_BEGIN);
|
|
assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC);
|
|
assert(DMU_GET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo) ==
|
|
DMU_COMPOUNDSTREAM);
|
|
|
|
/*
|
|
* Read in the nvlist from the stream.
|
|
*/
|
|
if (drr->drr_payloadlen != 0) {
|
|
error = recv_read_nvlist(hdl, fd, drr->drr_payloadlen,
|
|
&stream_nv, flags->byteswap, zc);
|
|
if (error) {
|
|
error = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
|
|
ENOENT);
|
|
raw = (nvlist_lookup_boolean(stream_nv, "raw") == 0);
|
|
|
|
if (recursive && strchr(destname, '@')) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"cannot specify snapshot name for multi-snapshot stream"));
|
|
error = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Read in the end record and verify checksum.
|
|
*/
|
|
if (0 != (error = recv_read(hdl, fd, &drre, sizeof (drre),
|
|
flags->byteswap, NULL)))
|
|
goto out;
|
|
if (flags->byteswap) {
|
|
drre.drr_type = BSWAP_32(drre.drr_type);
|
|
drre.drr_u.drr_end.drr_checksum.zc_word[0] =
|
|
BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[0]);
|
|
drre.drr_u.drr_end.drr_checksum.zc_word[1] =
|
|
BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[1]);
|
|
drre.drr_u.drr_end.drr_checksum.zc_word[2] =
|
|
BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[2]);
|
|
drre.drr_u.drr_end.drr_checksum.zc_word[3] =
|
|
BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[3]);
|
|
}
|
|
if (drre.drr_type != DRR_END) {
|
|
error = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
if (!ZIO_CHECKSUM_EQUAL(drre.drr_u.drr_end.drr_checksum, *zc)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incorrect header checksum"));
|
|
error = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
(void) nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap);
|
|
|
|
if (drr->drr_payloadlen != 0) {
|
|
nvlist_t *stream_fss;
|
|
|
|
stream_fss = fnvlist_lookup_nvlist(stream_nv, "fss");
|
|
if ((stream_avl = fsavl_create(stream_fss)) == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"couldn't allocate avl tree"));
|
|
error = zfs_error(hdl, EZFS_NOMEM, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (fromsnap != NULL && recursive) {
|
|
nvlist_t *renamed = NULL;
|
|
nvpair_t *pair = NULL;
|
|
|
|
(void) strlcpy(tofs, destname, sizeof (tofs));
|
|
if (flags->isprefix) {
|
|
struct drr_begin *drrb = &drr->drr_u.drr_begin;
|
|
int i;
|
|
|
|
if (flags->istail) {
|
|
cp = strrchr(drrb->drr_toname, '/');
|
|
if (cp == NULL) {
|
|
(void) strlcat(tofs, "/",
|
|
sizeof (tofs));
|
|
i = 0;
|
|
} else {
|
|
i = (cp - drrb->drr_toname);
|
|
}
|
|
} else {
|
|
i = strcspn(drrb->drr_toname, "/@");
|
|
}
|
|
/* zfs_receive_one() will create_parents() */
|
|
(void) strlcat(tofs, &drrb->drr_toname[i],
|
|
sizeof (tofs));
|
|
*strchr(tofs, '@') = '\0';
|
|
}
|
|
|
|
if (!flags->dryrun && !flags->nomount) {
|
|
renamed = fnvlist_alloc();
|
|
}
|
|
|
|
softerr = recv_incremental_replication(hdl, tofs, flags,
|
|
stream_nv, stream_avl, renamed);
|
|
|
|
/* Unmount renamed filesystems before receiving. */
|
|
while ((pair = nvlist_next_nvpair(renamed,
|
|
pair)) != NULL) {
|
|
zfs_handle_t *zhp;
|
|
prop_changelist_t *clp = NULL;
|
|
|
|
zhp = zfs_open(hdl, nvpair_name(pair),
|
|
ZFS_TYPE_FILESYSTEM);
|
|
if (zhp != NULL) {
|
|
clp = changelist_gather(zhp,
|
|
ZFS_PROP_MOUNTPOINT, 0,
|
|
flags->forceunmount ? MS_FORCE : 0);
|
|
zfs_close(zhp);
|
|
if (clp != NULL) {
|
|
softerr |=
|
|
changelist_prefix(clp);
|
|
changelist_free(clp);
|
|
}
|
|
}
|
|
}
|
|
|
|
fnvlist_free(renamed);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the fs specified by the first path in the stream (the top level
|
|
* specified by 'zfs send') and pass it to each invocation of
|
|
* zfs_receive_one().
|
|
*/
|
|
(void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname,
|
|
sizeof (sendfs));
|
|
if ((cp = strchr(sendfs, '@')) != NULL) {
|
|
*cp = '\0';
|
|
/*
|
|
* Find the "sendsnap", the final snapshot in a replication
|
|
* stream. zfs_receive_one() handles certain errors
|
|
* differently, depending on if the contained stream is the
|
|
* last one or not.
|
|
*/
|
|
sendsnap = (cp + 1);
|
|
}
|
|
|
|
/* Finally, receive each contained stream */
|
|
do {
|
|
/*
|
|
* we should figure out if it has a recoverable
|
|
* error, in which case do a recv_skip() and drive on.
|
|
* Note, if we fail due to already having this guid,
|
|
* zfs_receive_one() will take care of it (ie,
|
|
* recv_skip() and return 0).
|
|
*/
|
|
error = zfs_receive_impl(hdl, destname, NULL, flags, fd,
|
|
sendfs, stream_nv, stream_avl, top_zfs, sendsnap, cmdprops);
|
|
if (error == ENODATA) {
|
|
error = 0;
|
|
break;
|
|
}
|
|
anyerr |= error;
|
|
} while (error == 0);
|
|
|
|
if (drr->drr_payloadlen != 0 && recursive && fromsnap != NULL) {
|
|
/*
|
|
* Now that we have the fs's they sent us, try the
|
|
* renames again.
|
|
*/
|
|
softerr = recv_incremental_replication(hdl, tofs, flags,
|
|
stream_nv, stream_avl, NULL);
|
|
}
|
|
|
|
if (raw && softerr == 0 && *top_zfs != NULL) {
|
|
softerr = recv_fix_encryption_hierarchy(hdl, *top_zfs,
|
|
stream_nv);
|
|
}
|
|
|
|
out:
|
|
fsavl_destroy(stream_avl);
|
|
fnvlist_free(stream_nv);
|
|
if (softerr)
|
|
error = -2;
|
|
if (anyerr)
|
|
error = -1;
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
trunc_prop_errs(int truncated)
|
|
{
|
|
ASSERT(truncated != 0);
|
|
|
|
if (truncated == 1)
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"1 more property could not be set\n"));
|
|
else
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"%d more properties could not be set\n"), truncated);
|
|
}
|
|
|
|
static int
|
|
recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
|
|
{
|
|
dmu_replay_record_t *drr;
|
|
void *buf = zfs_alloc(hdl, SPA_MAXBLOCKSIZE);
|
|
uint64_t payload_size;
|
|
char errbuf[ERRBUFLEN];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive"));
|
|
|
|
/* XXX would be great to use lseek if possible... */
|
|
drr = buf;
|
|
|
|
while (recv_read(hdl, fd, drr, sizeof (dmu_replay_record_t),
|
|
byteswap, NULL) == 0) {
|
|
if (byteswap)
|
|
drr->drr_type = BSWAP_32(drr->drr_type);
|
|
|
|
switch (drr->drr_type) {
|
|
case DRR_BEGIN:
|
|
if (drr->drr_payloadlen != 0) {
|
|
(void) recv_read(hdl, fd, buf,
|
|
drr->drr_payloadlen, B_FALSE, NULL);
|
|
}
|
|
break;
|
|
|
|
case DRR_END:
|
|
free(buf);
|
|
return (0);
|
|
|
|
case DRR_OBJECT:
|
|
if (byteswap) {
|
|
drr->drr_u.drr_object.drr_bonuslen =
|
|
BSWAP_32(drr->drr_u.drr_object.
|
|
drr_bonuslen);
|
|
drr->drr_u.drr_object.drr_raw_bonuslen =
|
|
BSWAP_32(drr->drr_u.drr_object.
|
|
drr_raw_bonuslen);
|
|
}
|
|
|
|
payload_size =
|
|
DRR_OBJECT_PAYLOAD_SIZE(&drr->drr_u.drr_object);
|
|
(void) recv_read(hdl, fd, buf, payload_size,
|
|
B_FALSE, NULL);
|
|
break;
|
|
|
|
case DRR_WRITE:
|
|
if (byteswap) {
|
|
drr->drr_u.drr_write.drr_logical_size =
|
|
BSWAP_64(
|
|
drr->drr_u.drr_write.drr_logical_size);
|
|
drr->drr_u.drr_write.drr_compressed_size =
|
|
BSWAP_64(
|
|
drr->drr_u.drr_write.drr_compressed_size);
|
|
}
|
|
payload_size =
|
|
DRR_WRITE_PAYLOAD_SIZE(&drr->drr_u.drr_write);
|
|
assert(payload_size <= SPA_MAXBLOCKSIZE);
|
|
(void) recv_read(hdl, fd, buf,
|
|
payload_size, B_FALSE, NULL);
|
|
break;
|
|
case DRR_SPILL:
|
|
if (byteswap) {
|
|
drr->drr_u.drr_spill.drr_length =
|
|
BSWAP_64(drr->drr_u.drr_spill.drr_length);
|
|
drr->drr_u.drr_spill.drr_compressed_size =
|
|
BSWAP_64(drr->drr_u.drr_spill.
|
|
drr_compressed_size);
|
|
}
|
|
|
|
payload_size =
|
|
DRR_SPILL_PAYLOAD_SIZE(&drr->drr_u.drr_spill);
|
|
(void) recv_read(hdl, fd, buf, payload_size,
|
|
B_FALSE, NULL);
|
|
break;
|
|
case DRR_WRITE_EMBEDDED:
|
|
if (byteswap) {
|
|
drr->drr_u.drr_write_embedded.drr_psize =
|
|
BSWAP_32(drr->drr_u.drr_write_embedded.
|
|
drr_psize);
|
|
}
|
|
(void) recv_read(hdl, fd, buf,
|
|
P2ROUNDUP(drr->drr_u.drr_write_embedded.drr_psize,
|
|
8), B_FALSE, NULL);
|
|
break;
|
|
case DRR_OBJECT_RANGE:
|
|
case DRR_WRITE_BYREF:
|
|
case DRR_FREEOBJECTS:
|
|
case DRR_FREE:
|
|
break;
|
|
|
|
default:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid record type"));
|
|
free(buf);
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
}
|
|
|
|
free(buf);
|
|
return (-1);
|
|
}
|
|
|
|
static void
|
|
recv_ecksum_set_aux(libzfs_handle_t *hdl, const char *target_snap,
|
|
boolean_t resumable, boolean_t checksum)
|
|
{
|
|
char target_fs[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, (checksum ?
|
|
"checksum mismatch" : "incomplete stream")));
|
|
|
|
if (!resumable)
|
|
return;
|
|
(void) strlcpy(target_fs, target_snap, sizeof (target_fs));
|
|
*strchr(target_fs, '@') = '\0';
|
|
zfs_handle_t *zhp = zfs_open(hdl, target_fs,
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
if (zhp == NULL)
|
|
return;
|
|
|
|
char token_buf[ZFS_MAXPROPLEN];
|
|
int error = zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
|
|
token_buf, sizeof (token_buf),
|
|
NULL, NULL, 0, B_TRUE);
|
|
if (error == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"checksum mismatch or incomplete stream.\n"
|
|
"Partially received snapshot is saved.\n"
|
|
"A resuming stream can be generated on the sending "
|
|
"system by running:\n"
|
|
" zfs send -t %s"),
|
|
token_buf);
|
|
}
|
|
zfs_close(zhp);
|
|
}
|
|
|
|
/*
|
|
* Prepare a new nvlist of properties that are to override (-o) or be excluded
|
|
* (-x) from the received dataset
|
|
* recvprops: received properties from the send stream
|
|
* cmdprops: raw input properties from command line
|
|
* origprops: properties, both locally-set and received, currently set on the
|
|
* target dataset if it exists, NULL otherwise.
|
|
* oxprops: valid output override (-o) and excluded (-x) properties
|
|
*/
|
|
static int
|
|
zfs_setup_cmdline_props(libzfs_handle_t *hdl, zfs_type_t type,
|
|
char *fsname, boolean_t zoned, boolean_t recursive, boolean_t newfs,
|
|
boolean_t raw, boolean_t toplevel, nvlist_t *recvprops, nvlist_t *cmdprops,
|
|
nvlist_t *origprops, nvlist_t **oxprops, uint8_t **wkeydata_out,
|
|
uint_t *wkeylen_out, const char *errbuf)
|
|
{
|
|
nvpair_t *nvp;
|
|
nvlist_t *oprops, *voprops;
|
|
zfs_handle_t *zhp = NULL;
|
|
zpool_handle_t *zpool_hdl = NULL;
|
|
char *cp;
|
|
int ret = 0;
|
|
char namebuf[ZFS_MAX_DATASET_NAME_LEN];
|
|
|
|
if (nvlist_empty(cmdprops))
|
|
return (0); /* No properties to override or exclude */
|
|
|
|
*oxprops = fnvlist_alloc();
|
|
oprops = fnvlist_alloc();
|
|
|
|
strlcpy(namebuf, fsname, ZFS_MAX_DATASET_NAME_LEN);
|
|
|
|
/*
|
|
* Get our dataset handle. The target dataset may not exist yet.
|
|
*/
|
|
if (zfs_dataset_exists(hdl, namebuf, ZFS_TYPE_DATASET)) {
|
|
zhp = zfs_open(hdl, namebuf, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
ret = -1;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* open the zpool handle */
|
|
cp = strchr(namebuf, '/');
|
|
if (cp != NULL)
|
|
*cp = '\0';
|
|
zpool_hdl = zpool_open(hdl, namebuf);
|
|
if (zpool_hdl == NULL) {
|
|
ret = -1;
|
|
goto error;
|
|
}
|
|
|
|
/* restore namebuf to match fsname for later use */
|
|
if (cp != NULL)
|
|
*cp = '/';
|
|
|
|
/*
|
|
* first iteration: process excluded (-x) properties now and gather
|
|
* added (-o) properties to be later processed by zfs_valid_proplist()
|
|
*/
|
|
nvp = NULL;
|
|
while ((nvp = nvlist_next_nvpair(cmdprops, nvp)) != NULL) {
|
|
const char *name = nvpair_name(nvp);
|
|
zfs_prop_t prop = zfs_name_to_prop(name);
|
|
|
|
/*
|
|
* It turns out, if we don't normalize "aliased" names
|
|
* e.g. compress= against the "real" names (e.g. compression)
|
|
* here, then setting/excluding them does not work as
|
|
* intended.
|
|
*
|
|
* But since user-defined properties wouldn't have a valid
|
|
* mapping here, we do this conditional dance.
|
|
*/
|
|
const char *newname = name;
|
|
if (prop >= ZFS_PROP_TYPE)
|
|
newname = zfs_prop_to_name(prop);
|
|
|
|
/* "origin" is processed separately, don't handle it here */
|
|
if (prop == ZFS_PROP_ORIGIN)
|
|
continue;
|
|
|
|
/* raw streams can't override encryption properties */
|
|
if ((zfs_prop_encryption_key_param(prop) ||
|
|
prop == ZFS_PROP_ENCRYPTION) && raw) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"encryption property '%s' cannot "
|
|
"be set or excluded for raw streams."), name);
|
|
ret = zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
/* incremental streams can only exclude encryption properties */
|
|
if ((zfs_prop_encryption_key_param(prop) ||
|
|
prop == ZFS_PROP_ENCRYPTION) && !newfs &&
|
|
nvpair_type(nvp) != DATA_TYPE_BOOLEAN) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"encryption property '%s' cannot "
|
|
"be set for incremental streams."), name);
|
|
ret = zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
switch (nvpair_type(nvp)) {
|
|
case DATA_TYPE_BOOLEAN: /* -x property */
|
|
/*
|
|
* DATA_TYPE_BOOLEAN is the way we're asked to "exclude"
|
|
* a property: this is done by forcing an explicit
|
|
* inherit on the destination so the effective value is
|
|
* not the one we received from the send stream.
|
|
*/
|
|
if (!zfs_prop_valid_for_type(prop, type, B_FALSE) &&
|
|
!zfs_prop_user(name)) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
|
|
"Warning: %s: property '%s' does not "
|
|
"apply to datasets of this type\n"),
|
|
fsname, name);
|
|
continue;
|
|
}
|
|
/*
|
|
* We do this only if the property is not already
|
|
* locally-set, in which case its value will take
|
|
* priority over the received anyway.
|
|
*/
|
|
if (nvlist_exists(origprops, newname)) {
|
|
nvlist_t *attrs;
|
|
char *source = NULL;
|
|
|
|
attrs = fnvlist_lookup_nvlist(origprops,
|
|
newname);
|
|
if (nvlist_lookup_string(attrs,
|
|
ZPROP_SOURCE, &source) == 0 &&
|
|
strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0)
|
|
continue;
|
|
}
|
|
/*
|
|
* We can't force an explicit inherit on non-inheritable
|
|
* properties: if we're asked to exclude this kind of
|
|
* values we remove them from "recvprops" input nvlist.
|
|
*/
|
|
if (!zfs_prop_user(name) && /* can be inherited too */
|
|
!zfs_prop_inheritable(prop) &&
|
|
nvlist_exists(recvprops, newname))
|
|
fnvlist_remove(recvprops, newname);
|
|
else
|
|
fnvlist_add_boolean(*oxprops, newname);
|
|
break;
|
|
case DATA_TYPE_STRING: /* -o property=value */
|
|
/*
|
|
* we're trying to override a property that does not
|
|
* make sense for this type of dataset, but we don't
|
|
* want to fail if the receive is recursive: this comes
|
|
* in handy when the send stream contains, for
|
|
* instance, a child ZVOL and we're trying to receive
|
|
* it with "-o atime=on"
|
|
*/
|
|
if (!zfs_prop_valid_for_type(prop, type, B_FALSE) &&
|
|
!zfs_prop_user(name)) {
|
|
if (recursive)
|
|
continue;
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"property '%s' does not apply to datasets "
|
|
"of this type"), name);
|
|
ret = zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
fnvlist_add_string(oprops, newname,
|
|
fnvpair_value_string(nvp));
|
|
break;
|
|
default:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"property '%s' must be a string or boolean"), name);
|
|
ret = zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (toplevel) {
|
|
/* convert override strings properties to native */
|
|
if ((voprops = zfs_valid_proplist(hdl, ZFS_TYPE_DATASET,
|
|
oprops, zoned, zhp, zpool_hdl, B_FALSE, errbuf)) == NULL) {
|
|
ret = zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* zfs_crypto_create() requires the parent name. Get it
|
|
* by truncating the fsname copy stored in namebuf.
|
|
*/
|
|
cp = strrchr(namebuf, '/');
|
|
if (cp != NULL)
|
|
*cp = '\0';
|
|
|
|
if (!raw && zfs_crypto_create(hdl, namebuf, voprops, NULL,
|
|
B_FALSE, wkeydata_out, wkeylen_out) != 0) {
|
|
fnvlist_free(voprops);
|
|
ret = zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
/* second pass: process "-o" properties */
|
|
fnvlist_merge(*oxprops, voprops);
|
|
fnvlist_free(voprops);
|
|
} else {
|
|
/* override props on child dataset are inherited */
|
|
nvp = NULL;
|
|
while ((nvp = nvlist_next_nvpair(oprops, nvp)) != NULL) {
|
|
const char *name = nvpair_name(nvp);
|
|
fnvlist_add_boolean(*oxprops, name);
|
|
}
|
|
}
|
|
|
|
error:
|
|
if (zhp != NULL)
|
|
zfs_close(zhp);
|
|
if (zpool_hdl != NULL)
|
|
zpool_close(zpool_hdl);
|
|
fnvlist_free(oprops);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Restores a backup of tosnap from the file descriptor specified by infd.
|
|
*/
|
|
static int
|
|
zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
|
|
const char *originsnap, recvflags_t *flags, dmu_replay_record_t *drr,
|
|
dmu_replay_record_t *drr_noswap, const char *sendfs, nvlist_t *stream_nv,
|
|
avl_tree_t *stream_avl, char **top_zfs,
|
|
const char *finalsnap, nvlist_t *cmdprops)
|
|
{
|
|
struct timespec begin_time;
|
|
int ioctl_err, ioctl_errno, err;
|
|
char *cp;
|
|
struct drr_begin *drrb = &drr->drr_u.drr_begin;
|
|
char errbuf[ERRBUFLEN];
|
|
const char *chopprefix;
|
|
boolean_t newfs = B_FALSE;
|
|
boolean_t stream_wantsnewfs, stream_resumingnewfs;
|
|
boolean_t newprops = B_FALSE;
|
|
uint64_t read_bytes = 0;
|
|
uint64_t errflags = 0;
|
|
uint64_t parent_snapguid = 0;
|
|
prop_changelist_t *clp = NULL;
|
|
nvlist_t *snapprops_nvlist = NULL;
|
|
nvlist_t *snapholds_nvlist = NULL;
|
|
zprop_errflags_t prop_errflags;
|
|
nvlist_t *prop_errors = NULL;
|
|
boolean_t recursive;
|
|
char *snapname = NULL;
|
|
char destsnap[MAXPATHLEN * 2];
|
|
char origin[MAXNAMELEN] = {0};
|
|
char name[MAXPATHLEN];
|
|
char tmp_keylocation[MAXNAMELEN] = {0};
|
|
nvlist_t *rcvprops = NULL; /* props received from the send stream */
|
|
nvlist_t *oxprops = NULL; /* override (-o) and exclude (-x) props */
|
|
nvlist_t *origprops = NULL; /* original props (if destination exists) */
|
|
zfs_type_t type = ZFS_TYPE_INVALID;
|
|
boolean_t toplevel = B_FALSE;
|
|
boolean_t zoned = B_FALSE;
|
|
boolean_t hastoken = B_FALSE;
|
|
boolean_t redacted;
|
|
uint8_t *wkeydata = NULL;
|
|
uint_t wkeylen = 0;
|
|
|
|
#ifndef CLOCK_MONOTONIC_RAW
|
|
#define CLOCK_MONOTONIC_RAW CLOCK_MONOTONIC
|
|
#endif
|
|
clock_gettime(CLOCK_MONOTONIC_RAW, &begin_time);
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive"));
|
|
|
|
recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
|
|
ENOENT);
|
|
|
|
/* Did the user request holds be skipped via zfs recv -k? */
|
|
boolean_t holds = flags->holds && !flags->skipholds;
|
|
|
|
if (stream_avl != NULL) {
|
|
char *keylocation = NULL;
|
|
nvlist_t *lookup = NULL;
|
|
nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid,
|
|
&snapname);
|
|
|
|
(void) nvlist_lookup_uint64(fs, "parentfromsnap",
|
|
&parent_snapguid);
|
|
err = nvlist_lookup_nvlist(fs, "props", &rcvprops);
|
|
if (err) {
|
|
rcvprops = fnvlist_alloc();
|
|
newprops = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* The keylocation property may only be set on encryption roots,
|
|
* but this dataset might not become an encryption root until
|
|
* recv_fix_encryption_hierarchy() is called. That function
|
|
* will fixup the keylocation anyway, so we temporarily unset
|
|
* the keylocation for now to avoid any errors from the receive
|
|
* ioctl.
|
|
*/
|
|
err = nvlist_lookup_string(rcvprops,
|
|
zfs_prop_to_name(ZFS_PROP_KEYLOCATION), &keylocation);
|
|
if (err == 0) {
|
|
strcpy(tmp_keylocation, keylocation);
|
|
(void) nvlist_remove_all(rcvprops,
|
|
zfs_prop_to_name(ZFS_PROP_KEYLOCATION));
|
|
}
|
|
|
|
if (flags->canmountoff) {
|
|
fnvlist_add_uint64(rcvprops,
|
|
zfs_prop_to_name(ZFS_PROP_CANMOUNT), 0);
|
|
} else if (newprops) { /* nothing in rcvprops, eliminate it */
|
|
fnvlist_free(rcvprops);
|
|
rcvprops = NULL;
|
|
newprops = B_FALSE;
|
|
}
|
|
if (0 == nvlist_lookup_nvlist(fs, "snapprops", &lookup)) {
|
|
snapprops_nvlist = fnvlist_lookup_nvlist(lookup,
|
|
snapname);
|
|
}
|
|
if (holds) {
|
|
if (0 == nvlist_lookup_nvlist(fs, "snapholds",
|
|
&lookup)) {
|
|
snapholds_nvlist = fnvlist_lookup_nvlist(
|
|
lookup, snapname);
|
|
}
|
|
}
|
|
}
|
|
|
|
cp = NULL;
|
|
|
|
/*
|
|
* Determine how much of the snapshot name stored in the stream
|
|
* we are going to tack on to the name they specified on the
|
|
* command line, and how much we are going to chop off.
|
|
*
|
|
* If they specified a snapshot, chop the entire name stored in
|
|
* the stream.
|
|
*/
|
|
if (flags->istail) {
|
|
/*
|
|
* A filesystem was specified with -e. We want to tack on only
|
|
* the tail of the sent snapshot path.
|
|
*/
|
|
if (strchr(tosnap, '@')) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"argument - snapshot not allowed with -e"));
|
|
err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
chopprefix = strrchr(sendfs, '/');
|
|
|
|
if (chopprefix == NULL) {
|
|
/*
|
|
* The tail is the poolname, so we need to
|
|
* prepend a path separator.
|
|
*/
|
|
int len = strlen(drrb->drr_toname);
|
|
cp = malloc(len + 2);
|
|
cp[0] = '/';
|
|
(void) strcpy(&cp[1], drrb->drr_toname);
|
|
chopprefix = cp;
|
|
} else {
|
|
chopprefix = drrb->drr_toname + (chopprefix - sendfs);
|
|
}
|
|
} else if (flags->isprefix) {
|
|
/*
|
|
* A filesystem was specified with -d. We want to tack on
|
|
* everything but the first element of the sent snapshot path
|
|
* (all but the pool name).
|
|
*/
|
|
if (strchr(tosnap, '@')) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"argument - snapshot not allowed with -d"));
|
|
err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
chopprefix = strchr(drrb->drr_toname, '/');
|
|
if (chopprefix == NULL)
|
|
chopprefix = strchr(drrb->drr_toname, '@');
|
|
} else if (strchr(tosnap, '@') == NULL) {
|
|
/*
|
|
* If a filesystem was specified without -d or -e, we want to
|
|
* tack on everything after the fs specified by 'zfs send'.
|
|
*/
|
|
chopprefix = drrb->drr_toname + strlen(sendfs);
|
|
} else {
|
|
/* A snapshot was specified as an exact path (no -d or -e). */
|
|
if (recursive) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"cannot specify snapshot name for multi-snapshot "
|
|
"stream"));
|
|
err = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
chopprefix = drrb->drr_toname + strlen(drrb->drr_toname);
|
|
}
|
|
|
|
ASSERT(strstr(drrb->drr_toname, sendfs) == drrb->drr_toname);
|
|
ASSERT(chopprefix > drrb->drr_toname || strchr(sendfs, '/') == NULL);
|
|
ASSERT(chopprefix <= drrb->drr_toname + strlen(drrb->drr_toname) ||
|
|
strchr(sendfs, '/') == NULL);
|
|
ASSERT(chopprefix[0] == '/' || chopprefix[0] == '@' ||
|
|
chopprefix[0] == '\0');
|
|
|
|
/*
|
|
* Determine name of destination snapshot.
|
|
*/
|
|
(void) strlcpy(destsnap, tosnap, sizeof (destsnap));
|
|
(void) strlcat(destsnap, chopprefix, sizeof (destsnap));
|
|
free(cp);
|
|
if (!zfs_name_valid(destsnap, ZFS_TYPE_SNAPSHOT)) {
|
|
err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Determine the name of the origin snapshot.
|
|
*/
|
|
if (originsnap) {
|
|
(void) strlcpy(origin, originsnap, sizeof (origin));
|
|
if (flags->verbose)
|
|
(void) printf("using provided clone origin %s\n",
|
|
origin);
|
|
} else if (drrb->drr_flags & DRR_FLAG_CLONE) {
|
|
if (guid_to_name(hdl, destsnap,
|
|
drrb->drr_fromguid, B_FALSE, origin) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"local origin for clone %s does not exist"),
|
|
destsnap);
|
|
err = zfs_error(hdl, EZFS_NOENT, errbuf);
|
|
goto out;
|
|
}
|
|
if (flags->verbose)
|
|
(void) printf("found clone origin %s\n", origin);
|
|
}
|
|
|
|
if ((DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
DMU_BACKUP_FEATURE_DEDUP)) {
|
|
(void) fprintf(stderr,
|
|
gettext("ERROR: \"zfs receive\" no longer supports "
|
|
"deduplicated send streams. Use\n"
|
|
"the \"zstream redup\" command to convert this stream "
|
|
"to a regular,\n"
|
|
"non-deduplicated stream.\n"));
|
|
err = zfs_error(hdl, EZFS_NOTSUP, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
boolean_t resuming = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
DMU_BACKUP_FEATURE_RESUMING;
|
|
boolean_t raw = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
DMU_BACKUP_FEATURE_RAW;
|
|
boolean_t embedded = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
DMU_BACKUP_FEATURE_EMBED_DATA;
|
|
stream_wantsnewfs = (drrb->drr_fromguid == 0 ||
|
|
(drrb->drr_flags & DRR_FLAG_CLONE) || originsnap) && !resuming;
|
|
stream_resumingnewfs = (drrb->drr_fromguid == 0 ||
|
|
(drrb->drr_flags & DRR_FLAG_CLONE) || originsnap) && resuming;
|
|
|
|
if (stream_wantsnewfs) {
|
|
/*
|
|
* if the parent fs does not exist, look for it based on
|
|
* the parent snap GUID
|
|
*/
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive new filesystem stream"));
|
|
|
|
(void) strcpy(name, destsnap);
|
|
cp = strrchr(name, '/');
|
|
if (cp)
|
|
*cp = '\0';
|
|
if (cp &&
|
|
!zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) {
|
|
char suffix[ZFS_MAX_DATASET_NAME_LEN];
|
|
(void) strcpy(suffix, strrchr(destsnap, '/'));
|
|
if (guid_to_name(hdl, name, parent_snapguid,
|
|
B_FALSE, destsnap) == 0) {
|
|
*strchr(destsnap, '@') = '\0';
|
|
(void) strcat(destsnap, suffix);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* If the fs does not exist, look for it based on the
|
|
* fromsnap GUID.
|
|
*/
|
|
if (resuming) {
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN,
|
|
"cannot receive resume stream"));
|
|
} else {
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN,
|
|
"cannot receive incremental stream"));
|
|
}
|
|
|
|
(void) strcpy(name, destsnap);
|
|
*strchr(name, '@') = '\0';
|
|
|
|
/*
|
|
* If the exact receive path was specified and this is the
|
|
* topmost path in the stream, then if the fs does not exist we
|
|
* should look no further.
|
|
*/
|
|
if ((flags->isprefix || (*(chopprefix = drrb->drr_toname +
|
|
strlen(sendfs)) != '\0' && *chopprefix != '@')) &&
|
|
!zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) {
|
|
char snap[ZFS_MAX_DATASET_NAME_LEN];
|
|
(void) strcpy(snap, strchr(destsnap, '@'));
|
|
if (guid_to_name(hdl, name, drrb->drr_fromguid,
|
|
B_FALSE, destsnap) == 0) {
|
|
*strchr(destsnap, '@') = '\0';
|
|
(void) strcat(destsnap, snap);
|
|
}
|
|
}
|
|
}
|
|
|
|
(void) strcpy(name, destsnap);
|
|
*strchr(name, '@') = '\0';
|
|
|
|
redacted = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
|
|
DMU_BACKUP_FEATURE_REDACTED;
|
|
|
|
if (flags->heal) {
|
|
if (flags->isprefix || flags->istail || flags->force ||
|
|
flags->canmountoff || flags->resumable || flags->nomount ||
|
|
flags->skipholds) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"corrective recv can not be used when combined with"
|
|
" this flag"));
|
|
err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto out;
|
|
}
|
|
uint64_t guid =
|
|
get_snap_guid(hdl, name, strchr(destsnap, '@') + 1);
|
|
if (guid == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"corrective recv must specify an existing snapshot"
|
|
" to heal"));
|
|
err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto out;
|
|
} else if (guid != drrb->drr_toguid) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"local snapshot doesn't match the snapshot"
|
|
" in the provided stream"));
|
|
err = zfs_error(hdl, EZFS_WRONG_PARENT, errbuf);
|
|
goto out;
|
|
}
|
|
} else if (zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) {
|
|
zfs_cmd_t zc = {"\0"};
|
|
zfs_handle_t *zhp = NULL;
|
|
boolean_t encrypted;
|
|
|
|
(void) strcpy(zc.zc_name, name);
|
|
|
|
/*
|
|
* Destination fs exists. It must be one of these cases:
|
|
* - an incremental send stream
|
|
* - the stream specifies a new fs (full stream or clone)
|
|
* and they want us to blow away the existing fs (and
|
|
* have therefore specified -F and removed any snapshots)
|
|
* - we are resuming a failed receive.
|
|
*/
|
|
if (stream_wantsnewfs) {
|
|
boolean_t is_volume = drrb->drr_type == DMU_OST_ZVOL;
|
|
if (!flags->force) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination '%s' exists\n"
|
|
"must specify -F to overwrite it"), name);
|
|
err = zfs_error(hdl, EZFS_EXISTS, errbuf);
|
|
goto out;
|
|
}
|
|
if (zfs_ioctl(hdl, ZFS_IOC_SNAPSHOT_LIST_NEXT,
|
|
&zc) == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination has snapshots (eg. %s)\n"
|
|
"must destroy them to overwrite it"),
|
|
zc.zc_name);
|
|
err = zfs_error(hdl, EZFS_EXISTS, errbuf);
|
|
goto out;
|
|
}
|
|
if (is_volume && strrchr(name, '/') == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination %s is the root dataset\n"
|
|
"cannot overwrite with a ZVOL"),
|
|
name);
|
|
err = zfs_error(hdl, EZFS_EXISTS, errbuf);
|
|
goto out;
|
|
}
|
|
if (is_volume &&
|
|
zfs_ioctl(hdl, ZFS_IOC_DATASET_LIST_NEXT,
|
|
&zc) == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination has children (eg. %s)\n"
|
|
"cannot overwrite with a ZVOL"),
|
|
zc.zc_name);
|
|
err = zfs_error(hdl, EZFS_WRONG_PARENT, errbuf);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if ((zhp = zfs_open(hdl, name,
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (stream_wantsnewfs &&
|
|
zhp->zfs_dmustats.dds_origin[0]) {
|
|
zfs_close(zhp);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination '%s' is a clone\n"
|
|
"must destroy it to overwrite it"), name);
|
|
err = zfs_error(hdl, EZFS_EXISTS, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Raw sends can not be performed as an incremental on top
|
|
* of existing unencrypted datasets. zfs recv -F can't be
|
|
* used to blow away an existing encrypted filesystem. This
|
|
* is because it would require the dsl dir to point to the
|
|
* new key (or lack of a key) and the old key at the same
|
|
* time. The -F flag may still be used for deleting
|
|
* intermediate snapshots that would otherwise prevent the
|
|
* receive from working.
|
|
*/
|
|
encrypted = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) !=
|
|
ZIO_CRYPT_OFF;
|
|
if (!stream_wantsnewfs && !encrypted && raw) {
|
|
zfs_close(zhp);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"cannot perform raw receive on top of "
|
|
"existing unencrypted dataset"));
|
|
err = zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (stream_wantsnewfs && flags->force &&
|
|
((raw && !encrypted) || encrypted)) {
|
|
zfs_close(zhp);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"zfs receive -F cannot be used to destroy an "
|
|
"encrypted filesystem or overwrite an "
|
|
"unencrypted one with an encrypted one"));
|
|
err = zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM &&
|
|
(stream_wantsnewfs || stream_resumingnewfs)) {
|
|
/* We can't do online recv in this case */
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
|
|
flags->forceunmount ? MS_FORCE : 0);
|
|
if (clp == NULL) {
|
|
zfs_close(zhp);
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
if (changelist_prefix(clp) != 0) {
|
|
changelist_free(clp);
|
|
zfs_close(zhp);
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we are resuming a newfs, set newfs here so that we will
|
|
* mount it if the recv succeeds this time. We can tell
|
|
* that it was a newfs on the first recv because the fs
|
|
* itself will be inconsistent (if the fs existed when we
|
|
* did the first recv, we would have received it into
|
|
* .../%recv).
|
|
*/
|
|
if (resuming && zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT))
|
|
newfs = B_TRUE;
|
|
|
|
/* we want to know if we're zoned when validating -o|-x props */
|
|
zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
|
|
|
|
/* may need this info later, get it now we have zhp around */
|
|
if (zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, NULL, 0,
|
|
NULL, NULL, 0, B_TRUE) == 0)
|
|
hastoken = B_TRUE;
|
|
|
|
/* gather existing properties on destination */
|
|
origprops = fnvlist_alloc();
|
|
fnvlist_merge(origprops, zhp->zfs_props);
|
|
fnvlist_merge(origprops, zhp->zfs_user_props);
|
|
|
|
zfs_close(zhp);
|
|
} else {
|
|
zfs_handle_t *zhp;
|
|
|
|
/*
|
|
* Destination filesystem does not exist. Therefore we better
|
|
* be creating a new filesystem (either from a full backup, or
|
|
* a clone). It would therefore be invalid if the user
|
|
* specified only the pool name (i.e. if the destination name
|
|
* contained no slash character).
|
|
*/
|
|
cp = strrchr(name, '/');
|
|
|
|
if (!stream_wantsnewfs || cp == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination '%s' does not exist"), name);
|
|
err = zfs_error(hdl, EZFS_NOENT, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Trim off the final dataset component so we perform the
|
|
* recvbackup ioctl to the filesystems's parent.
|
|
*/
|
|
*cp = '\0';
|
|
|
|
if (flags->isprefix && !flags->istail && !flags->dryrun &&
|
|
create_parents(hdl, destsnap, strlen(tosnap)) != 0) {
|
|
err = zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
goto out;
|
|
}
|
|
|
|
/* validate parent */
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
if (zhp == NULL) {
|
|
err = zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
goto out;
|
|
}
|
|
if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"parent '%s' is not a filesystem"), name);
|
|
err = zfs_error(hdl, EZFS_WRONG_PARENT, errbuf);
|
|
zfs_close(zhp);
|
|
goto out;
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
|
|
newfs = B_TRUE;
|
|
*cp = '/';
|
|
}
|
|
|
|
if (flags->verbose) {
|
|
(void) printf("%s %s%s stream of %s into %s\n",
|
|
flags->dryrun ? "would receive" : "receiving",
|
|
flags->heal ? " corrective" : "",
|
|
drrb->drr_fromguid ? "incremental" : "full",
|
|
drrb->drr_toname, destsnap);
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
/*
|
|
* If this is the top-level dataset, record it so we can use it
|
|
* for recursive operations later.
|
|
*/
|
|
if (top_zfs != NULL &&
|
|
(*top_zfs == NULL || strcmp(*top_zfs, name) == 0)) {
|
|
toplevel = B_TRUE;
|
|
if (*top_zfs == NULL)
|
|
*top_zfs = zfs_strdup(hdl, name);
|
|
}
|
|
|
|
if (drrb->drr_type == DMU_OST_ZVOL) {
|
|
type = ZFS_TYPE_VOLUME;
|
|
} else if (drrb->drr_type == DMU_OST_ZFS) {
|
|
type = ZFS_TYPE_FILESYSTEM;
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid record type: 0x%d"), drrb->drr_type);
|
|
err = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
goto out;
|
|
}
|
|
if ((err = zfs_setup_cmdline_props(hdl, type, name, zoned, recursive,
|
|
stream_wantsnewfs, raw, toplevel, rcvprops, cmdprops, origprops,
|
|
&oxprops, &wkeydata, &wkeylen, errbuf)) != 0)
|
|
goto out;
|
|
|
|
/*
|
|
* When sending with properties (zfs send -p), the encryption property
|
|
* is not included because it is a SETONCE property and therefore
|
|
* treated as read only. However, we are always able to determine its
|
|
* value because raw sends will include it in the DRR_BDEGIN payload
|
|
* and non-raw sends with properties are not allowed for encrypted
|
|
* datasets. Therefore, if this is a non-raw properties stream, we can
|
|
* infer that the value should be ZIO_CRYPT_OFF and manually add that
|
|
* to the received properties.
|
|
*/
|
|
if (stream_wantsnewfs && !raw && rcvprops != NULL &&
|
|
!nvlist_exists(cmdprops, zfs_prop_to_name(ZFS_PROP_ENCRYPTION))) {
|
|
if (oxprops == NULL)
|
|
oxprops = fnvlist_alloc();
|
|
fnvlist_add_uint64(oxprops,
|
|
zfs_prop_to_name(ZFS_PROP_ENCRYPTION), ZIO_CRYPT_OFF);
|
|
}
|
|
|
|
if (flags->dryrun) {
|
|
void *buf = zfs_alloc(hdl, SPA_MAXBLOCKSIZE);
|
|
|
|
/*
|
|
* We have read the DRR_BEGIN record, but we have
|
|
* not yet read the payload. For non-dryrun sends
|
|
* this will be done by the kernel, so we must
|
|
* emulate that here, before attempting to read
|
|
* more records.
|
|
*/
|
|
err = recv_read(hdl, infd, buf, drr->drr_payloadlen,
|
|
flags->byteswap, NULL);
|
|
free(buf);
|
|
if (err != 0)
|
|
goto out;
|
|
|
|
err = recv_skip(hdl, infd, flags->byteswap);
|
|
goto out;
|
|
}
|
|
|
|
if (flags->heal) {
|
|
err = ioctl_err = lzc_receive_with_heal(destsnap, rcvprops,
|
|
oxprops, wkeydata, wkeylen, origin, flags->force,
|
|
flags->heal, flags->resumable, raw, infd, drr_noswap, -1,
|
|
&read_bytes, &errflags, NULL, &prop_errors);
|
|
} else {
|
|
err = ioctl_err = lzc_receive_with_cmdprops(destsnap, rcvprops,
|
|
oxprops, wkeydata, wkeylen, origin, flags->force,
|
|
flags->resumable, raw, infd, drr_noswap, -1, &read_bytes,
|
|
&errflags, NULL, &prop_errors);
|
|
}
|
|
ioctl_errno = ioctl_err;
|
|
prop_errflags = errflags;
|
|
|
|
if (err == 0) {
|
|
nvpair_t *prop_err = NULL;
|
|
|
|
while ((prop_err = nvlist_next_nvpair(prop_errors,
|
|
prop_err)) != NULL) {
|
|
char tbuf[1024];
|
|
zfs_prop_t prop;
|
|
int intval;
|
|
|
|
prop = zfs_name_to_prop(nvpair_name(prop_err));
|
|
(void) nvpair_value_int32(prop_err, &intval);
|
|
if (strcmp(nvpair_name(prop_err),
|
|
ZPROP_N_MORE_ERRORS) == 0) {
|
|
trunc_prop_errs(intval);
|
|
break;
|
|
} else if (snapname == NULL || finalsnap == NULL ||
|
|
strcmp(finalsnap, snapname) == 0 ||
|
|
strcmp(nvpair_name(prop_err),
|
|
zfs_prop_to_name(ZFS_PROP_REFQUOTA)) != 0) {
|
|
/*
|
|
* Skip the special case of, for example,
|
|
* "refquota", errors on intermediate
|
|
* snapshots leading up to a final one.
|
|
* That's why we have all of the checks above.
|
|
*
|
|
* See zfs_ioctl.c's extract_delay_props() for
|
|
* a list of props which can fail on
|
|
* intermediate snapshots, but shouldn't
|
|
* affect the overall receive.
|
|
*/
|
|
(void) snprintf(tbuf, sizeof (tbuf),
|
|
dgettext(TEXT_DOMAIN,
|
|
"cannot receive %s property on %s"),
|
|
nvpair_name(prop_err), name);
|
|
zfs_setprop_error(hdl, prop, intval, tbuf);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (err == 0 && snapprops_nvlist) {
|
|
zfs_cmd_t zc = {"\0"};
|
|
|
|
(void) strcpy(zc.zc_name, destsnap);
|
|
zc.zc_cookie = B_TRUE; /* received */
|
|
zcmd_write_src_nvlist(hdl, &zc, snapprops_nvlist);
|
|
(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
|
|
zcmd_free_nvlists(&zc);
|
|
}
|
|
if (err == 0 && snapholds_nvlist) {
|
|
nvpair_t *pair;
|
|
nvlist_t *holds, *errors = NULL;
|
|
int cleanup_fd = -1;
|
|
|
|
VERIFY(0 == nvlist_alloc(&holds, 0, KM_SLEEP));
|
|
for (pair = nvlist_next_nvpair(snapholds_nvlist, NULL);
|
|
pair != NULL;
|
|
pair = nvlist_next_nvpair(snapholds_nvlist, pair)) {
|
|
fnvlist_add_string(holds, destsnap, nvpair_name(pair));
|
|
}
|
|
(void) lzc_hold(holds, cleanup_fd, &errors);
|
|
fnvlist_free(snapholds_nvlist);
|
|
fnvlist_free(holds);
|
|
}
|
|
|
|
if (err && (ioctl_errno == ENOENT || ioctl_errno == EEXIST)) {
|
|
/*
|
|
* It may be that this snapshot already exists,
|
|
* in which case we want to consume & ignore it
|
|
* rather than failing.
|
|
*/
|
|
avl_tree_t *local_avl;
|
|
nvlist_t *local_nv, *fs;
|
|
cp = strchr(destsnap, '@');
|
|
|
|
/*
|
|
* XXX Do this faster by just iterating over snaps in
|
|
* this fs. Also if zc_value does not exist, we will
|
|
* get a strange "does not exist" error message.
|
|
*/
|
|
*cp = '\0';
|
|
if (gather_nvlist(hdl, destsnap, NULL, NULL, B_FALSE, B_TRUE,
|
|
B_FALSE, B_FALSE, B_FALSE, B_FALSE, B_FALSE, B_FALSE,
|
|
B_TRUE, &local_nv, &local_avl) == 0) {
|
|
*cp = '@';
|
|
fs = fsavl_find(local_avl, drrb->drr_toguid, NULL);
|
|
fsavl_destroy(local_avl);
|
|
fnvlist_free(local_nv);
|
|
|
|
if (fs != NULL) {
|
|
if (flags->verbose) {
|
|
(void) printf("snap %s already exists; "
|
|
"ignoring\n", destsnap);
|
|
}
|
|
err = ioctl_err = recv_skip(hdl, infd,
|
|
flags->byteswap);
|
|
}
|
|
}
|
|
*cp = '@';
|
|
}
|
|
|
|
if (ioctl_err != 0) {
|
|
switch (ioctl_errno) {
|
|
case ENODEV:
|
|
cp = strchr(destsnap, '@');
|
|
*cp = '\0';
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"most recent snapshot of %s does not\n"
|
|
"match incremental source"), destsnap);
|
|
(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
*cp = '@';
|
|
break;
|
|
case ETXTBSY:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination %s has been modified\n"
|
|
"since most recent snapshot"), name);
|
|
(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
break;
|
|
case EACCES:
|
|
if (flags->heal) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"key must be loaded to do a non-raw "
|
|
"corrective recv on an encrypted "
|
|
"dataset."));
|
|
} else if (raw && stream_wantsnewfs) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"failed to create encryption key"));
|
|
} else if (raw && !stream_wantsnewfs) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"encryption key does not match "
|
|
"existing key"));
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"inherited key must be loaded"));
|
|
}
|
|
(void) zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf);
|
|
break;
|
|
case EEXIST:
|
|
cp = strchr(destsnap, '@');
|
|
if (newfs) {
|
|
/* it's the containing fs that exists */
|
|
*cp = '\0';
|
|
}
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination already exists"));
|
|
(void) zfs_error_fmt(hdl, EZFS_EXISTS,
|
|
dgettext(TEXT_DOMAIN, "cannot restore to %s"),
|
|
destsnap);
|
|
*cp = '@';
|
|
break;
|
|
case EINVAL:
|
|
if (flags->resumable) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"kernel modules must be upgraded to "
|
|
"receive this stream."));
|
|
} else if (embedded && !raw) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incompatible embedded data stream "
|
|
"feature with encrypted receive."));
|
|
}
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case ECKSUM:
|
|
case ZFS_ERR_STREAM_TRUNCATED:
|
|
if (flags->heal)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"corrective receive was not able to "
|
|
"reconstruct the data needed for "
|
|
"healing."));
|
|
else
|
|
recv_ecksum_set_aux(hdl, destsnap,
|
|
flags->resumable, ioctl_err == ECKSUM);
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case ZFS_ERR_STREAM_LARGE_BLOCK_MISMATCH:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"incremental send stream requires -L "
|
|
"(--large-block), to match previous receive."));
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case ENOTSUP:
|
|
if (flags->heal)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"stream is not compatible with the "
|
|
"data in the pool."));
|
|
else
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"pool must be upgraded to receive this "
|
|
"stream."));
|
|
(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
|
|
break;
|
|
case EDQUOT:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination %s space quota exceeded."), name);
|
|
(void) zfs_error(hdl, EZFS_NOSPC, errbuf);
|
|
break;
|
|
case ZFS_ERR_FROM_IVSET_GUID_MISSING:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"IV set guid missing. See errata %u at "
|
|
"https://openzfs.github.io/openzfs-docs/msg/"
|
|
"ZFS-8000-ER."),
|
|
ZPOOL_ERRATA_ZOL_8308_ENCRYPTION);
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case ZFS_ERR_FROM_IVSET_GUID_MISMATCH:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"IV set guid mismatch. See the 'zfs receive' "
|
|
"man page section\n discussing the limitations "
|
|
"of raw encrypted send streams."));
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case ZFS_ERR_SPILL_BLOCK_FLAG_MISSING:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"Spill block flag missing for raw send.\n"
|
|
"The zfs software on the sending system must "
|
|
"be updated."));
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
break;
|
|
case EBUSY:
|
|
if (hastoken) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination %s contains "
|
|
"partially-complete state from "
|
|
"\"zfs receive -s\"."), name);
|
|
(void) zfs_error(hdl, EZFS_BUSY, errbuf);
|
|
break;
|
|
}
|
|
zfs_fallthrough;
|
|
default:
|
|
(void) zfs_standard_error(hdl, ioctl_errno, errbuf);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Mount the target filesystem (if created). Also mount any
|
|
* children of the target filesystem if we did a replication
|
|
* receive (indicated by stream_avl being non-NULL).
|
|
*/
|
|
if (clp) {
|
|
if (!flags->nomount)
|
|
err |= changelist_postfix(clp);
|
|
changelist_free(clp);
|
|
}
|
|
|
|
if ((newfs || stream_avl) && type == ZFS_TYPE_FILESYSTEM && !redacted)
|
|
flags->domount = B_TRUE;
|
|
|
|
if (prop_errflags & ZPROP_ERR_NOCLEAR) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: "
|
|
"failed to clear unreceived properties on %s"), name);
|
|
(void) fprintf(stderr, "\n");
|
|
}
|
|
if (prop_errflags & ZPROP_ERR_NORESTORE) {
|
|
(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: "
|
|
"failed to restore original properties on %s"), name);
|
|
(void) fprintf(stderr, "\n");
|
|
}
|
|
|
|
if (err || ioctl_err) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (flags->verbose) {
|
|
char buf1[64];
|
|
char buf2[64];
|
|
uint64_t bytes = read_bytes;
|
|
struct timespec delta;
|
|
clock_gettime(CLOCK_MONOTONIC_RAW, &delta);
|
|
if (begin_time.tv_nsec > delta.tv_nsec) {
|
|
delta.tv_nsec =
|
|
1000000000 + delta.tv_nsec - begin_time.tv_nsec;
|
|
delta.tv_sec -= 1;
|
|
} else
|
|
delta.tv_nsec -= begin_time.tv_nsec;
|
|
delta.tv_sec -= begin_time.tv_sec;
|
|
if (delta.tv_sec == 0 && delta.tv_nsec == 0)
|
|
delta.tv_nsec = 1;
|
|
double delta_f = delta.tv_sec + (delta.tv_nsec / 1e9);
|
|
zfs_nicebytes(bytes, buf1, sizeof (buf1));
|
|
zfs_nicebytes(bytes / delta_f, buf2, sizeof (buf2));
|
|
|
|
(void) printf("received %s stream in %.2f seconds (%s/sec)\n",
|
|
buf1, delta_f, buf2);
|
|
}
|
|
|
|
err = 0;
|
|
out:
|
|
if (prop_errors != NULL)
|
|
fnvlist_free(prop_errors);
|
|
|
|
if (tmp_keylocation[0] != '\0') {
|
|
fnvlist_add_string(rcvprops,
|
|
zfs_prop_to_name(ZFS_PROP_KEYLOCATION), tmp_keylocation);
|
|
}
|
|
|
|
if (newprops)
|
|
fnvlist_free(rcvprops);
|
|
|
|
fnvlist_free(oxprops);
|
|
fnvlist_free(origprops);
|
|
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Check properties we were asked to override (both -o|-x)
|
|
*/
|
|
static boolean_t
|
|
zfs_receive_checkprops(libzfs_handle_t *hdl, nvlist_t *props,
|
|
const char *errbuf)
|
|
{
|
|
nvpair_t *nvp = NULL;
|
|
zfs_prop_t prop;
|
|
const char *name;
|
|
|
|
while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) {
|
|
name = nvpair_name(nvp);
|
|
prop = zfs_name_to_prop(name);
|
|
|
|
if (prop == ZPROP_USERPROP) {
|
|
if (!zfs_prop_user(name)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"%s: invalid property '%s'"), errbuf, name);
|
|
return (B_FALSE);
|
|
}
|
|
continue;
|
|
}
|
|
/*
|
|
* "origin" is readonly but is used to receive datasets as
|
|
* clones so we don't raise an error here
|
|
*/
|
|
if (prop == ZFS_PROP_ORIGIN)
|
|
continue;
|
|
|
|
/* encryption params have their own verification later */
|
|
if (prop == ZFS_PROP_ENCRYPTION ||
|
|
zfs_prop_encryption_key_param(prop))
|
|
continue;
|
|
|
|
/*
|
|
* cannot override readonly, set-once and other specific
|
|
* settable properties
|
|
*/
|
|
if (zfs_prop_readonly(prop) || prop == ZFS_PROP_VERSION ||
|
|
prop == ZFS_PROP_VOLSIZE) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"%s: invalid property '%s'"), errbuf, name);
|
|
return (B_FALSE);
|
|
}
|
|
}
|
|
|
|
return (B_TRUE);
|
|
}
|
|
|
|
static int
|
|
zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap,
|
|
const char *originsnap, recvflags_t *flags, int infd, const char *sendfs,
|
|
nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs,
|
|
const char *finalsnap, nvlist_t *cmdprops)
|
|
{
|
|
int err;
|
|
dmu_replay_record_t drr, drr_noswap;
|
|
struct drr_begin *drrb = &drr.drr_u.drr_begin;
|
|
char errbuf[ERRBUFLEN];
|
|
zio_cksum_t zcksum = { { 0 } };
|
|
uint64_t featureflags;
|
|
int hdrtype;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive"));
|
|
|
|
/* check cmdline props, raise an error if they cannot be received */
|
|
if (!zfs_receive_checkprops(hdl, cmdprops, errbuf))
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
|
|
if (flags->isprefix &&
|
|
!zfs_dataset_exists(hdl, tosnap, ZFS_TYPE_DATASET)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified fs "
|
|
"(%s) does not exist"), tosnap);
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
}
|
|
if (originsnap &&
|
|
!zfs_dataset_exists(hdl, originsnap, ZFS_TYPE_DATASET)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified origin fs "
|
|
"(%s) does not exist"), originsnap);
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
}
|
|
|
|
/* read in the BEGIN record */
|
|
if (0 != (err = recv_read(hdl, infd, &drr, sizeof (drr), B_FALSE,
|
|
&zcksum)))
|
|
return (err);
|
|
|
|
if (drr.drr_type == DRR_END || drr.drr_type == BSWAP_32(DRR_END)) {
|
|
/* It's the double end record at the end of a package */
|
|
return (ENODATA);
|
|
}
|
|
|
|
/* the kernel needs the non-byteswapped begin record */
|
|
drr_noswap = drr;
|
|
|
|
flags->byteswap = B_FALSE;
|
|
if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) {
|
|
/*
|
|
* We computed the checksum in the wrong byteorder in
|
|
* recv_read() above; do it again correctly.
|
|
*/
|
|
memset(&zcksum, 0, sizeof (zio_cksum_t));
|
|
fletcher_4_incremental_byteswap(&drr, sizeof (drr), &zcksum);
|
|
flags->byteswap = B_TRUE;
|
|
|
|
drr.drr_type = BSWAP_32(drr.drr_type);
|
|
drr.drr_payloadlen = BSWAP_32(drr.drr_payloadlen);
|
|
drrb->drr_magic = BSWAP_64(drrb->drr_magic);
|
|
drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo);
|
|
drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time);
|
|
drrb->drr_type = BSWAP_32(drrb->drr_type);
|
|
drrb->drr_flags = BSWAP_32(drrb->drr_flags);
|
|
drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
|
|
drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid);
|
|
}
|
|
|
|
if (drrb->drr_magic != DMU_BACKUP_MAGIC || drr.drr_type != DRR_BEGIN) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (bad magic number)"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo);
|
|
hdrtype = DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo);
|
|
|
|
if (!DMU_STREAM_SUPPORTED(featureflags) ||
|
|
(hdrtype != DMU_SUBSTREAM && hdrtype != DMU_COMPOUNDSTREAM)) {
|
|
/*
|
|
* Let's be explicit about this one, since rather than
|
|
* being a new feature we can't know, it's an old
|
|
* feature we dropped.
|
|
*/
|
|
if (featureflags & DMU_BACKUP_FEATURE_DEDUP) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"stream has deprecated feature: dedup, try "
|
|
"'zstream redup [send in a file] | zfs recv "
|
|
"[...]'"));
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"stream has unsupported feature, feature flags = "
|
|
"%llx (unknown flags = %llx)"),
|
|
(u_longlong_t)featureflags,
|
|
(u_longlong_t)((featureflags) &
|
|
~DMU_BACKUP_FEATURE_MASK));
|
|
}
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
/* Holds feature is set once in the compound stream header. */
|
|
if (featureflags & DMU_BACKUP_FEATURE_HOLDS)
|
|
flags->holds = B_TRUE;
|
|
|
|
if (strchr(drrb->drr_toname, '@') == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (bad snapshot name)"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) {
|
|
char nonpackage_sendfs[ZFS_MAX_DATASET_NAME_LEN];
|
|
if (sendfs == NULL) {
|
|
/*
|
|
* We were not called from zfs_receive_package(). Get
|
|
* the fs specified by 'zfs send'.
|
|
*/
|
|
char *cp;
|
|
(void) strlcpy(nonpackage_sendfs,
|
|
drr.drr_u.drr_begin.drr_toname,
|
|
sizeof (nonpackage_sendfs));
|
|
if ((cp = strchr(nonpackage_sendfs, '@')) != NULL)
|
|
*cp = '\0';
|
|
sendfs = nonpackage_sendfs;
|
|
VERIFY(finalsnap == NULL);
|
|
}
|
|
return (zfs_receive_one(hdl, infd, tosnap, originsnap, flags,
|
|
&drr, &drr_noswap, sendfs, stream_nv, stream_avl, top_zfs,
|
|
finalsnap, cmdprops));
|
|
} else {
|
|
assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) ==
|
|
DMU_COMPOUNDSTREAM);
|
|
return (zfs_receive_package(hdl, infd, tosnap, flags, &drr,
|
|
&zcksum, top_zfs, cmdprops));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Restores a backup of tosnap from the file descriptor specified by infd.
|
|
* Return 0 on total success, -2 if some things couldn't be
|
|
* destroyed/renamed/promoted, -1 if some things couldn't be received.
|
|
* (-1 will override -2, if -1 and the resumable flag was specified the
|
|
* transfer can be resumed if the sending side supports it).
|
|
*/
|
|
int
|
|
zfs_receive(libzfs_handle_t *hdl, const char *tosnap, nvlist_t *props,
|
|
recvflags_t *flags, int infd, avl_tree_t *stream_avl)
|
|
{
|
|
char *top_zfs = NULL;
|
|
int err;
|
|
struct stat sb;
|
|
char *originsnap = NULL;
|
|
|
|
/*
|
|
* The only way fstat can fail is if we do not have a valid file
|
|
* descriptor.
|
|
*/
|
|
if (fstat(infd, &sb) == -1) {
|
|
perror("fstat");
|
|
return (-2);
|
|
}
|
|
|
|
if (props) {
|
|
err = nvlist_lookup_string(props, "origin", &originsnap);
|
|
if (err && err != ENOENT)
|
|
return (err);
|
|
}
|
|
|
|
err = zfs_receive_impl(hdl, tosnap, originsnap, flags, infd, NULL, NULL,
|
|
stream_avl, &top_zfs, NULL, props);
|
|
|
|
if (err == 0 && !flags->nomount && flags->domount && top_zfs) {
|
|
zfs_handle_t *zhp = NULL;
|
|
prop_changelist_t *clp = NULL;
|
|
|
|
zhp = zfs_open(hdl, top_zfs,
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
if (zhp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
} else {
|
|
if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
|
|
zfs_close(zhp);
|
|
goto out;
|
|
}
|
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT,
|
|
CL_GATHER_MOUNT_ALWAYS,
|
|
flags->forceunmount ? MS_FORCE : 0);
|
|
zfs_close(zhp);
|
|
if (clp == NULL) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
|
|
/* mount and share received datasets */
|
|
err = changelist_postfix(clp);
|
|
changelist_free(clp);
|
|
if (err != 0)
|
|
err = -1;
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (top_zfs)
|
|
free(top_zfs);
|
|
|
|
return (err);
|
|
}
|