2008-11-20 20:01:55 +00:00
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/*
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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 http://www.opensolaris.org/os/licensing.
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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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2009-02-18 20:51:31 +00:00
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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2008-11-20 20:01:55 +00:00
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* Use is subject to license terms.
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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 <libdevinfo.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 <strings.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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2008-12-05 20:12:37 +00:00
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#include <sys/debug.h>
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2008-11-20 20:01:55 +00:00
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#include <stddef.h>
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#include <libzfs.h>
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#include "zfs_namecheck.h"
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#include "zfs_prop.h"
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#include "libzfs_impl.h"
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#include <fletcher.c> /* XXX */
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2008-12-03 20:09:06 +00:00
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static int zfs_receive_impl(libzfs_handle_t *, const char *, recvflags_t,
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int, avl_tree_t *, char **);
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2008-11-20 20:01:55 +00:00
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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 = arg1;
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const fsavl_node_t *fn2 = arg2;
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if (fn1->fn_guid > fn2->fn_guid)
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return (+1);
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else if (fn1->fn_guid < fn2->fn_guid)
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return (-1);
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else
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return (0);
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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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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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VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs));
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VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &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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uint64_t guid;
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VERIFY(0 == nvpair_value_uint64(snapelem, &guid));
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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 = guid;
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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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if (avl_find(fsavl, fn, NULL) == NULL)
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avl_add(fsavl, fn);
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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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uint64_t parent_fromsnap_guid;
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nvlist_t *parent_snaps;
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nvlist_t *fss;
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2008-12-03 20:09:06 +00:00
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nvlist_t *snapprops;
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2008-11-20 20:01:55 +00:00
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const char *fromsnap;
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const char *tosnap;
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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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2008-12-03 20:09:06 +00:00
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* "snapprops" -> { name (lastname) -> { name -> value } }
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2008-11-20 20:01:55 +00:00
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*
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* "origin" -> number (guid) (if clone)
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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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2008-12-03 20:09:06 +00:00
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static void send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv);
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2008-11-20 20:01:55 +00:00
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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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char *snapname;
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2008-12-03 20:09:06 +00:00
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nvlist_t *nv;
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2008-11-20 20:01:55 +00:00
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snapname = strrchr(zhp->zfs_name, '@')+1;
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VERIFY(0 == nvlist_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 ((sd->fromsnap && strcmp(snapname, sd->fromsnap) == 0) ||
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(sd->parent_fromsnap_guid == 0 && sd->tosnap &&
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strcmp(snapname, sd->tosnap) == 0)) {
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sd->parent_fromsnap_guid = guid;
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}
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2008-12-03 20:09:06 +00:00
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VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0));
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send_iterate_prop(zhp, nv);
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VERIFY(0 == nvlist_add_nvlist(sd->snapprops, snapname, nv));
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nvlist_free(nv);
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2008-11-20 20:01:55 +00:00
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zfs_close(zhp);
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return (0);
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}
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static void
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send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv)
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{
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nvpair_t *elem = NULL;
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while ((elem = nvlist_next_nvpair(zhp->zfs_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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nvlist_t *propnv;
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if (!zfs_prop_user(propname) && zfs_prop_readonly(prop))
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continue;
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verify(nvpair_value_nvlist(elem, &propnv) == 0);
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if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION) {
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/* these guys are modifyable, but have no source */
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uint64_t value;
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verify(nvlist_lookup_uint64(propnv,
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ZPROP_VALUE, &value) == 0);
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2008-12-03 20:09:06 +00:00
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if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT)
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continue;
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2008-11-20 20:01:55 +00:00
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} else {
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char *source;
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if (nvlist_lookup_string(propnv,
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ZPROP_SOURCE, &source) != 0)
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continue;
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if (strcmp(source, zhp->zfs_name) != 0)
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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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verify(nvlist_lookup_string(propnv,
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ZPROP_VALUE, &value) == 0);
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VERIFY(0 == nvlist_add_string(nv, propname, value));
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} else {
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uint64_t value;
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verify(nvlist_lookup_uint64(propnv,
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ZPROP_VALUE, &value) == 0);
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VERIFY(0 == nvlist_add_uint64(nv, propname, value));
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}
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}
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}
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static int
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send_iterate_fs(zfs_handle_t *zhp, void *arg)
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{
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send_data_t *sd = arg;
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nvlist_t *nvfs, *nv;
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int rv;
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uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid;
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uint64_t guid = zhp->zfs_dmustats.dds_guid;
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char guidstring[64];
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VERIFY(0 == nvlist_alloc(&nvfs, NV_UNIQUE_NAME, 0));
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VERIFY(0 == nvlist_add_string(nvfs, "name", zhp->zfs_name));
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VERIFY(0 == nvlist_add_uint64(nvfs, "parentfromsnap",
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sd->parent_fromsnap_guid));
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if (zhp->zfs_dmustats.dds_origin[0]) {
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zfs_handle_t *origin = zfs_open(zhp->zfs_hdl,
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zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT);
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if (origin == NULL)
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return (-1);
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VERIFY(0 == nvlist_add_uint64(nvfs, "origin",
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origin->zfs_dmustats.dds_guid));
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}
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/* iterate over props */
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VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0));
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send_iterate_prop(zhp, nv);
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VERIFY(0 == nvlist_add_nvlist(nvfs, "props", nv));
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nvlist_free(nv);
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/* iterate over snaps, and set sd->parent_fromsnap_guid */
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sd->parent_fromsnap_guid = 0;
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VERIFY(0 == nvlist_alloc(&sd->parent_snaps, NV_UNIQUE_NAME, 0));
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2008-12-03 20:09:06 +00:00
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VERIFY(0 == nvlist_alloc(&sd->snapprops, NV_UNIQUE_NAME, 0));
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2008-11-20 20:01:55 +00:00
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(void) zfs_iter_snapshots(zhp, send_iterate_snap, sd);
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VERIFY(0 == nvlist_add_nvlist(nvfs, "snaps", sd->parent_snaps));
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2008-12-03 20:09:06 +00:00
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VERIFY(0 == nvlist_add_nvlist(nvfs, "snapprops", sd->snapprops));
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2008-11-20 20:01:55 +00:00
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nvlist_free(sd->parent_snaps);
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2008-12-03 20:09:06 +00:00
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nvlist_free(sd->snapprops);
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2008-11-20 20:01:55 +00:00
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/* add this fs to nvlist */
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(void) snprintf(guidstring, sizeof (guidstring),
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"0x%llx", (longlong_t)guid);
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VERIFY(0 == nvlist_add_nvlist(sd->fss, guidstring, nvfs));
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nvlist_free(nvfs);
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/* iterate over children */
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rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd);
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sd->parent_fromsnap_guid = parent_fromsnap_guid_save;
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zfs_close(zhp);
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return (rv);
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}
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static int
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gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
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const char *tosnap, nvlist_t **nvlp, avl_tree_t **avlp)
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{
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zfs_handle_t *zhp;
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send_data_t sd = { 0 };
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int error;
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zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
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if (zhp == NULL)
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return (EZFS_BADTYPE);
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VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0));
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sd.fromsnap = fromsnap;
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sd.tosnap = tosnap;
|
|
|
|
|
|
|
|
if ((error = send_iterate_fs(zhp, &sd)) != 0) {
|
|
|
|
nvlist_free(sd.fss);
|
|
|
|
if (avlp != NULL)
|
|
|
|
*avlp = NULL;
|
|
|
|
*nvlp = NULL;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (avlp != NULL && (*avlp = fsavl_create(sd.fss)) == NULL) {
|
|
|
|
nvlist_free(sd.fss);
|
|
|
|
*nvlp = NULL;
|
|
|
|
return (EZFS_NOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
*nvlp = sd.fss;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Routines for dealing with the sorted snapshot functionality
|
|
|
|
*/
|
|
|
|
typedef struct zfs_node {
|
|
|
|
zfs_handle_t *zn_handle;
|
|
|
|
avl_node_t zn_avlnode;
|
|
|
|
} zfs_node_t;
|
|
|
|
|
|
|
|
static int
|
|
|
|
zfs_sort_snaps(zfs_handle_t *zhp, void *data)
|
|
|
|
{
|
|
|
|
avl_tree_t *avl = data;
|
|
|
|
zfs_node_t *node = zfs_alloc(zhp->zfs_hdl, sizeof (zfs_node_t));
|
|
|
|
|
|
|
|
node->zn_handle = zhp;
|
|
|
|
avl_add(avl, node);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
zfs_snapshot_compare(const void *larg, const void *rarg)
|
|
|
|
{
|
|
|
|
zfs_handle_t *l = ((zfs_node_t *)larg)->zn_handle;
|
|
|
|
zfs_handle_t *r = ((zfs_node_t *)rarg)->zn_handle;
|
|
|
|
uint64_t lcreate, rcreate;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sort them according to creation time. We use the hidden
|
|
|
|
* CREATETXG property to get an absolute ordering of snapshots.
|
|
|
|
*/
|
|
|
|
lcreate = zfs_prop_get_int(l, ZFS_PROP_CREATETXG);
|
|
|
|
rcreate = zfs_prop_get_int(r, ZFS_PROP_CREATETXG);
|
|
|
|
|
|
|
|
if (lcreate < rcreate)
|
|
|
|
return (-1);
|
|
|
|
else if (lcreate > rcreate)
|
|
|
|
return (+1);
|
|
|
|
else
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
zfs_iter_snapshots_sorted(zfs_handle_t *zhp, zfs_iter_f callback, void *data)
|
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
zfs_node_t *node;
|
|
|
|
avl_tree_t avl;
|
|
|
|
void *cookie = NULL;
|
|
|
|
|
|
|
|
avl_create(&avl, zfs_snapshot_compare,
|
|
|
|
sizeof (zfs_node_t), offsetof(zfs_node_t, zn_avlnode));
|
|
|
|
|
|
|
|
ret = zfs_iter_snapshots(zhp, zfs_sort_snaps, &avl);
|
|
|
|
|
|
|
|
for (node = avl_first(&avl); node != NULL; node = AVL_NEXT(&avl, node))
|
|
|
|
ret |= callback(node->zn_handle, data);
|
|
|
|
|
|
|
|
while ((node = avl_destroy_nodes(&avl, &cookie)) != NULL)
|
|
|
|
free(node);
|
|
|
|
|
|
|
|
avl_destroy(&avl);
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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 lastsnap[ZFS_MAXNAMELEN];
|
|
|
|
boolean_t seenfrom, seento, replicate, doall, fromorigin;
|
|
|
|
boolean_t verbose;
|
|
|
|
int outfd;
|
|
|
|
boolean_t err;
|
|
|
|
nvlist_t *fss;
|
|
|
|
avl_tree_t *fsavl;
|
|
|
|
} send_dump_data_t;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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, boolean_t fromorigin,
|
|
|
|
int outfd)
|
|
|
|
{
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
|
|
|
|
|
|
assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
|
|
|
|
assert(fromsnap == NULL || fromsnap[0] == '\0' || !fromorigin);
|
|
|
|
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
|
|
if (fromsnap)
|
|
|
|
(void) strlcpy(zc.zc_value, fromsnap, sizeof (zc.zc_value));
|
|
|
|
zc.zc_cookie = outfd;
|
|
|
|
zc.zc_obj = fromorigin;
|
|
|
|
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SEND, &zc) != 0) {
|
|
|
|
char errbuf[1024];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
|
|
"warning: cannot send '%s'"), zhp->zfs_name);
|
|
|
|
|
|
|
|
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:
|
|
|
|
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:
|
|
|
|
zfs_error_aux(hdl, strerror(errno));
|
|
|
|
return (zfs_error(hdl, EZFS_BADBACKUP, errbuf));
|
|
|
|
|
|
|
|
default:
|
|
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dump_snapshot(zfs_handle_t *zhp, void *arg)
|
|
|
|
{
|
|
|
|
send_dump_data_t *sdd = arg;
|
|
|
|
const char *thissnap;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
thissnap = strchr(zhp->zfs_name, '@') + 1;
|
|
|
|
|
|
|
|
if (sdd->fromsnap && !sdd->seenfrom &&
|
|
|
|
strcmp(sdd->fromsnap, thissnap) == 0) {
|
|
|
|
sdd->seenfrom = B_TRUE;
|
|
|
|
(void) strcpy(sdd->lastsnap, thissnap);
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sdd->seento || !sdd->seenfrom) {
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* send it */
|
|
|
|
if (sdd->verbose) {
|
|
|
|
(void) fprintf(stderr, "sending from @%s to %s\n",
|
|
|
|
sdd->lastsnap, zhp->zfs_name);
|
|
|
|
}
|
|
|
|
|
|
|
|
err = dump_ioctl(zhp, sdd->lastsnap,
|
|
|
|
sdd->lastsnap[0] == '\0' && (sdd->fromorigin || sdd->replicate),
|
|
|
|
sdd->outfd);
|
|
|
|
|
|
|
|
if (!sdd->seento && strcmp(sdd->tosnap, thissnap) == 0)
|
|
|
|
sdd->seento = B_TRUE;
|
|
|
|
|
|
|
|
(void) strcpy(sdd->lastsnap, thissnap);
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dump_filesystem(zfs_handle_t *zhp, void *arg)
|
|
|
|
{
|
|
|
|
int rv = 0;
|
|
|
|
send_dump_data_t *sdd = arg;
|
|
|
|
boolean_t missingfrom = B_FALSE;
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
|
|
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s",
|
|
|
|
zhp->zfs_name, sdd->tosnap);
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0) {
|
|
|
|
(void) fprintf(stderr, "WARNING: "
|
|
|
|
"could not send %s@%s: does not exist\n",
|
|
|
|
zhp->zfs_name, sdd->tosnap);
|
|
|
|
sdd->err = B_TRUE;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sdd->replicate && sdd->fromsnap) {
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s",
|
|
|
|
zhp->zfs_name, sdd->fromsnap);
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd,
|
|
|
|
ZFS_IOC_OBJSET_STATS, &zc) != 0) {
|
|
|
|
missingfrom = B_TRUE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sdd->doall) {
|
|
|
|
sdd->seenfrom = sdd->seento = sdd->lastsnap[0] = 0;
|
|
|
|
if (sdd->fromsnap == NULL || missingfrom)
|
|
|
|
sdd->seenfrom = B_TRUE;
|
|
|
|
|
|
|
|
rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg);
|
|
|
|
if (!sdd->seenfrom) {
|
|
|
|
(void) fprintf(stderr,
|
|
|
|
"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) {
|
|
|
|
(void) fprintf(stderr,
|
|
|
|
"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);
|
|
|
|
sdd->err = B_TRUE;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
zfs_handle_t *snapzhp;
|
|
|
|
char snapname[ZFS_MAXNAMELEN];
|
|
|
|
|
|
|
|
(void) snprintf(snapname, sizeof (snapname), "%s@%s",
|
|
|
|
zfs_get_name(zhp), sdd->tosnap);
|
|
|
|
snapzhp = zfs_open(zhp->zfs_hdl, snapname, ZFS_TYPE_SNAPSHOT);
|
|
|
|
if (snapzhp == NULL) {
|
|
|
|
rv = -1;
|
|
|
|
} else {
|
|
|
|
rv = dump_ioctl(snapzhp,
|
|
|
|
missingfrom ? NULL : sdd->fromsnap,
|
|
|
|
sdd->fromorigin || missingfrom,
|
|
|
|
sdd->outfd);
|
|
|
|
sdd->seento = B_TRUE;
|
|
|
|
zfs_close(snapzhp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (rv);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dump_filesystems(zfs_handle_t *rzhp, void *arg)
|
|
|
|
{
|
|
|
|
send_dump_data_t *sdd = arg;
|
|
|
|
nvpair_t *fspair;
|
|
|
|
boolean_t needagain, progress;
|
|
|
|
|
|
|
|
if (!sdd->replicate)
|
|
|
|
return (dump_filesystem(rzhp, sdd));
|
|
|
|
|
|
|
|
again:
|
|
|
|
needagain = progress = B_FALSE;
|
|
|
|
for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
|
|
|
|
fspair = nvlist_next_nvpair(sdd->fss, fspair)) {
|
|
|
|
nvlist_t *fslist;
|
|
|
|
char *fsname;
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
int err;
|
|
|
|
uint64_t origin_guid = 0;
|
|
|
|
nvlist_t *origin_nv;
|
|
|
|
|
|
|
|
VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0);
|
|
|
|
if (nvlist_lookup_boolean(fslist, "sent") == 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
VERIFY(nvlist_lookup_string(fslist, "name", &fsname) == 0);
|
|
|
|
(void) nvlist_lookup_uint64(fslist, "origin", &origin_guid);
|
|
|
|
|
|
|
|
origin_nv = fsavl_find(sdd->fsavl, origin_guid, NULL);
|
|
|
|
if (origin_nv &&
|
|
|
|
nvlist_lookup_boolean(origin_nv, "sent") == ENOENT) {
|
|
|
|
/*
|
|
|
|
* 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);
|
|
|
|
VERIFY(nvlist_add_boolean(fslist, "sent") == 0);
|
|
|
|
progress = B_TRUE;
|
|
|
|
zfs_close(zhp);
|
|
|
|
if (err)
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
if (needagain) {
|
|
|
|
assert(progress);
|
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Dumps a backup of tosnap, incremental from fromsnap if it isn't NULL.
|
|
|
|
* If 'doall', dump all intermediate snaps.
|
|
|
|
* If 'replicate', dump special header and do recursively.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
|
|
|
|
boolean_t replicate, boolean_t doall, boolean_t fromorigin,
|
|
|
|
boolean_t verbose, int outfd)
|
|
|
|
{
|
|
|
|
char errbuf[1024];
|
|
|
|
send_dump_data_t sdd = { 0 };
|
|
|
|
int err;
|
|
|
|
nvlist_t *fss = NULL;
|
|
|
|
avl_tree_t *fsavl = NULL;
|
|
|
|
|
|
|
|
(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 (replicate || doall) {
|
|
|
|
dmu_replay_record_t drr = { 0 };
|
|
|
|
char *packbuf = NULL;
|
|
|
|
size_t buflen = 0;
|
|
|
|
zio_cksum_t zc = { 0 };
|
|
|
|
|
|
|
|
assert(fromsnap || doall);
|
|
|
|
|
|
|
|
if (replicate) {
|
|
|
|
nvlist_t *hdrnv;
|
|
|
|
|
|
|
|
VERIFY(0 == nvlist_alloc(&hdrnv, NV_UNIQUE_NAME, 0));
|
|
|
|
if (fromsnap) {
|
|
|
|
VERIFY(0 == nvlist_add_string(hdrnv,
|
|
|
|
"fromsnap", fromsnap));
|
|
|
|
}
|
|
|
|
VERIFY(0 == nvlist_add_string(hdrnv, "tosnap", tosnap));
|
|
|
|
|
|
|
|
err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name,
|
|
|
|
fromsnap, tosnap, &fss, &fsavl);
|
|
|
|
if (err)
|
|
|
|
return (err);
|
|
|
|
VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss));
|
|
|
|
err = nvlist_pack(hdrnv, &packbuf, &buflen,
|
|
|
|
NV_ENCODE_XDR, 0);
|
|
|
|
nvlist_free(hdrnv);
|
|
|
|
if (err) {
|
|
|
|
fsavl_destroy(fsavl);
|
|
|
|
nvlist_free(fss);
|
|
|
|
return (zfs_standard_error(zhp->zfs_hdl,
|
|
|
|
err, errbuf));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* write first begin record */
|
|
|
|
drr.drr_type = DRR_BEGIN;
|
|
|
|
drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC;
|
|
|
|
drr.drr_u.drr_begin.drr_version = DMU_BACKUP_HEADER_VERSION;
|
|
|
|
(void) snprintf(drr.drr_u.drr_begin.drr_toname,
|
|
|
|
sizeof (drr.drr_u.drr_begin.drr_toname),
|
|
|
|
"%s@%s", zhp->zfs_name, tosnap);
|
|
|
|
drr.drr_payloadlen = buflen;
|
|
|
|
fletcher_4_incremental_native(&drr, sizeof (drr), &zc);
|
|
|
|
err = write(outfd, &drr, sizeof (drr));
|
|
|
|
|
|
|
|
/* write header nvlist */
|
|
|
|
if (err != -1) {
|
|
|
|
fletcher_4_incremental_native(packbuf, buflen, &zc);
|
|
|
|
err = write(outfd, packbuf, buflen);
|
|
|
|
}
|
|
|
|
free(packbuf);
|
|
|
|
if (err == -1) {
|
|
|
|
fsavl_destroy(fsavl);
|
|
|
|
nvlist_free(fss);
|
|
|
|
return (zfs_standard_error(zhp->zfs_hdl,
|
|
|
|
errno, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* write end record */
|
|
|
|
if (err != -1) {
|
|
|
|
bzero(&drr, sizeof (drr));
|
|
|
|
drr.drr_type = DRR_END;
|
|
|
|
drr.drr_u.drr_end.drr_checksum = zc;
|
|
|
|
err = write(outfd, &drr, sizeof (drr));
|
|
|
|
if (err == -1) {
|
|
|
|
fsavl_destroy(fsavl);
|
|
|
|
nvlist_free(fss);
|
|
|
|
return (zfs_standard_error(zhp->zfs_hdl,
|
|
|
|
errno, errbuf));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dump each stream */
|
|
|
|
sdd.fromsnap = fromsnap;
|
|
|
|
sdd.tosnap = tosnap;
|
|
|
|
sdd.outfd = outfd;
|
|
|
|
sdd.replicate = replicate;
|
|
|
|
sdd.doall = doall;
|
|
|
|
sdd.fromorigin = fromorigin;
|
|
|
|
sdd.fss = fss;
|
|
|
|
sdd.fsavl = fsavl;
|
|
|
|
sdd.verbose = verbose;
|
|
|
|
err = dump_filesystems(zhp, &sdd);
|
|
|
|
fsavl_destroy(fsavl);
|
|
|
|
nvlist_free(fss);
|
|
|
|
|
|
|
|
if (replicate || doall) {
|
|
|
|
/*
|
|
|
|
* write final end record. NB: want to do this even if
|
|
|
|
* there was some error, because it might not be totally
|
|
|
|
* failed.
|
|
|
|
*/
|
|
|
|
dmu_replay_record_t drr = { 0 };
|
|
|
|
drr.drr_type = DRR_END;
|
|
|
|
if (write(outfd, &drr, sizeof (drr)) == -1) {
|
|
|
|
return (zfs_standard_error(zhp->zfs_hdl,
|
|
|
|
errno, errbuf));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (err || sdd.err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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 (buf == NULL)
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
|
|
|
|
int baselen, char *newname, recvflags_t flags)
|
|
|
|
{
|
|
|
|
static int seq;
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
int err;
|
|
|
|
prop_changelist_t *clp;
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
|
|
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
|
|
if (zhp == NULL)
|
|
|
|
return (-1);
|
2008-12-03 20:09:06 +00:00
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
|
|
|
|
flags.force ? MS_FORCE : 0);
|
2008-11-20 20:01:55 +00:00
|
|
|
zfs_close(zhp);
|
|
|
|
if (clp == NULL)
|
|
|
|
return (-1);
|
|
|
|
err = changelist_prefix(clp);
|
|
|
|
if (err)
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
if (tryname) {
|
|
|
|
(void) strcpy(newname, tryname);
|
|
|
|
|
|
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
|
|
(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
|
|
|
|
(void) strlcpy(zc.zc_value, tryname, sizeof (zc.zc_value));
|
|
|
|
|
|
|
|
if (flags.verbose) {
|
|
|
|
(void) printf("attempting rename %s to %s\n",
|
|
|
|
zc.zc_name, zc.zc_value);
|
|
|
|
}
|
|
|
|
err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc);
|
|
|
|
if (err == 0)
|
|
|
|
changelist_rename(clp, name, tryname);
|
|
|
|
} else {
|
|
|
|
err = ENOENT;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (err != 0 && strncmp(name+baselen, "recv-", 5) != 0) {
|
|
|
|
seq++;
|
|
|
|
|
|
|
|
(void) strncpy(newname, name, baselen);
|
|
|
|
(void) snprintf(newname+baselen, ZFS_MAXNAMELEN-baselen,
|
2008-12-04 22:41:11 +00:00
|
|
|
"recv-%ld-%u", (long) getpid(), seq);
|
2008-11-20 20:01:55 +00:00
|
|
|
(void) strlcpy(zc.zc_value, newname, sizeof (zc.zc_value));
|
|
|
|
|
|
|
|
if (flags.verbose) {
|
|
|
|
(void) printf("failed - trying rename %s to %s\n",
|
|
|
|
zc.zc_name, zc.zc_value);
|
|
|
|
}
|
|
|
|
err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc);
|
|
|
|
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);
|
|
|
|
changelist_free(clp);
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
|
|
|
|
char *newname, recvflags_t flags)
|
|
|
|
{
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
int err = 0;
|
|
|
|
prop_changelist_t *clp;
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
|
|
|
|
zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
|
|
|
|
if (zhp == NULL)
|
|
|
|
return (-1);
|
2008-12-03 20:09:06 +00:00
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
|
|
|
|
flags.force ? MS_FORCE : 0);
|
2008-11-20 20:01:55 +00:00
|
|
|
zfs_close(zhp);
|
|
|
|
if (clp == NULL)
|
|
|
|
return (-1);
|
|
|
|
err = changelist_prefix(clp);
|
|
|
|
if (err)
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
|
|
(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
|
|
|
|
|
|
|
|
if (flags.verbose)
|
|
|
|
(void) printf("attempting destroy %s\n", zc.zc_name);
|
|
|
|
err = ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc);
|
|
|
|
|
|
|
|
if (err == 0) {
|
|
|
|
if (flags.verbose)
|
|
|
|
(void) printf("success\n");
|
|
|
|
changelist_remove(clp, zc.zc_name);
|
|
|
|
}
|
|
|
|
|
|
|
|
(void) changelist_postfix(clp);
|
|
|
|
changelist_free(clp);
|
|
|
|
|
|
|
|
if (err != 0)
|
|
|
|
err = recv_rename(hdl, name, NULL, baselen, newname, flags);
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
typedef struct guid_to_name_data {
|
|
|
|
uint64_t guid;
|
|
|
|
char *name;
|
|
|
|
} guid_to_name_data_t;
|
|
|
|
|
|
|
|
static int
|
|
|
|
guid_to_name_cb(zfs_handle_t *zhp, void *arg)
|
|
|
|
{
|
|
|
|
guid_to_name_data_t *gtnd = arg;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (zhp->zfs_dmustats.dds_guid == gtnd->guid) {
|
|
|
|
(void) strcpy(gtnd->name, zhp->zfs_name);
|
|
|
|
return (EEXIST);
|
|
|
|
}
|
|
|
|
err = zfs_iter_children(zhp, guid_to_name_cb, gtnd);
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid,
|
|
|
|
char *name)
|
|
|
|
{
|
|
|
|
/* exhaustive search all local snapshots */
|
|
|
|
guid_to_name_data_t gtnd;
|
|
|
|
int err = 0;
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
char *cp;
|
|
|
|
|
|
|
|
gtnd.guid = guid;
|
|
|
|
gtnd.name = name;
|
|
|
|
|
|
|
|
if (strchr(parent, '@') == NULL) {
|
|
|
|
zhp = make_dataset_handle(hdl, parent);
|
|
|
|
if (zhp != NULL) {
|
|
|
|
err = zfs_iter_children(zhp, guid_to_name_cb, >nd);
|
|
|
|
zfs_close(zhp);
|
|
|
|
if (err == EEXIST)
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
cp = strchr(parent, '/');
|
|
|
|
if (cp)
|
|
|
|
*cp = '\0';
|
|
|
|
zhp = make_dataset_handle(hdl, parent);
|
|
|
|
if (cp)
|
|
|
|
*cp = '/';
|
|
|
|
|
|
|
|
if (zhp) {
|
|
|
|
err = zfs_iter_children(zhp, guid_to_name_cb, >nd);
|
|
|
|
zfs_close(zhp);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (err == EEXIST ? 0 : ENOENT);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return true if dataset guid1 is created before guid2.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
created_before(libzfs_handle_t *hdl, avl_tree_t *avl,
|
|
|
|
uint64_t guid1, uint64_t guid2)
|
|
|
|
{
|
|
|
|
nvlist_t *nvfs;
|
|
|
|
char *fsname, *snapname;
|
|
|
|
char buf[ZFS_MAXNAMELEN];
|
|
|
|
int rv;
|
|
|
|
zfs_node_t zn1, zn2;
|
|
|
|
|
|
|
|
if (guid2 == 0)
|
|
|
|
return (0);
|
|
|
|
if (guid1 == 0)
|
|
|
|
return (1);
|
|
|
|
|
|
|
|
nvfs = fsavl_find(avl, guid1, &snapname);
|
|
|
|
VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname));
|
|
|
|
(void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname);
|
|
|
|
zn1.zn_handle = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT);
|
|
|
|
if (zn1.zn_handle == NULL)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
nvfs = fsavl_find(avl, guid2, &snapname);
|
|
|
|
VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname));
|
|
|
|
(void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname);
|
|
|
|
zn2.zn_handle = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT);
|
|
|
|
if (zn2.zn_handle == NULL) {
|
|
|
|
zfs_close(zn2.zn_handle);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
rv = (zfs_snapshot_compare(&zn1, &zn2) == -1);
|
|
|
|
|
|
|
|
zfs_close(zn1.zn_handle);
|
|
|
|
zfs_close(zn2.zn_handle);
|
|
|
|
|
|
|
|
return (rv);
|
|
|
|
}
|
|
|
|
|
|
|
|
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 *local_nv;
|
|
|
|
avl_tree_t *local_avl;
|
|
|
|
nvpair_t *fselem, *nextfselem;
|
|
|
|
char *tosnap, *fromsnap;
|
|
|
|
char newname[ZFS_MAXNAMELEN];
|
|
|
|
int error;
|
|
|
|
boolean_t needagain, progress;
|
|
|
|
|
|
|
|
VERIFY(0 == nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap));
|
|
|
|
VERIFY(0 == nvlist_lookup_string(stream_nv, "tosnap", &tosnap));
|
|
|
|
|
|
|
|
if (flags.dryrun)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
again:
|
|
|
|
needagain = progress = B_FALSE;
|
|
|
|
|
|
|
|
if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL,
|
|
|
|
&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);
|
|
|
|
|
|
|
|
VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs));
|
|
|
|
VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps));
|
|
|
|
VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname));
|
|
|
|
VERIFY(0 == nvlist_lookup_uint64(nvfs, "parentfromsnap",
|
|
|
|
&parent_fromsnap_guid));
|
|
|
|
(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;
|
|
|
|
|
|
|
|
VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid));
|
|
|
|
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! */
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
nvlist_t *origin_nvfs;
|
|
|
|
char *origin_fsname;
|
|
|
|
|
|
|
|
if (flags.verbose)
|
|
|
|
(void) printf("promoting %s\n", fsname);
|
|
|
|
|
|
|
|
origin_nvfs = fsavl_find(local_avl, originguid,
|
|
|
|
NULL);
|
|
|
|
VERIFY(0 == nvlist_lookup_string(origin_nvfs,
|
|
|
|
"name", &origin_fsname));
|
|
|
|
(void) strlcpy(zc.zc_value, origin_fsname,
|
|
|
|
sizeof (zc.zc_value));
|
|
|
|
(void) strlcpy(zc.zc_name, fsname,
|
|
|
|
sizeof (zc.zc_name));
|
|
|
|
error = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc);
|
|
|
|
if (error == 0)
|
|
|
|
progress = B_TRUE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
case -1:
|
|
|
|
fsavl_destroy(local_avl);
|
|
|
|
nvlist_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;
|
2008-12-03 20:09:06 +00:00
|
|
|
nvlist_t *found, *props;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
nextsnapelem = nvlist_next_nvpair(snaps, snapelem);
|
|
|
|
|
|
|
|
VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid));
|
|
|
|
found = fsavl_find(stream_avl, thisguid,
|
|
|
|
&stream_snapname);
|
|
|
|
|
|
|
|
/* check for delete */
|
|
|
|
if (found == NULL) {
|
|
|
|
char name[ZFS_MAXNAMELEN];
|
|
|
|
|
|
|
|
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;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
stream_nvfs = found;
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
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; /* clear current props */
|
|
|
|
(void) snprintf(zc.zc_name, sizeof (zc.zc_name),
|
|
|
|
"%s@%s", fsname, nvpair_name(snapelem));
|
|
|
|
if (zcmd_write_src_nvlist(hdl, &zc,
|
|
|
|
props) == 0) {
|
|
|
|
(void) zfs_ioctl(hdl,
|
|
|
|
ZFS_IOC_SET_PROP, &zc);
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
/* check for different snapname */
|
|
|
|
if (strcmp(nvpair_name(snapelem),
|
|
|
|
stream_snapname) != 0) {
|
|
|
|
char name[ZFS_MAXNAMELEN];
|
|
|
|
char tryname[ZFS_MAXNAMELEN];
|
|
|
|
|
|
|
|
(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;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fromguid == 0 && flags.verbose) {
|
|
|
|
(void) printf("local fs %s does not have fromsnap "
|
|
|
|
"(%s in stream); must have been deleted locally; "
|
|
|
|
"ignoring\n", fsname, fromsnap);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
VERIFY(0 == nvlist_lookup_string(stream_nvfs,
|
|
|
|
"name", &stream_fsname));
|
|
|
|
VERIFY(0 == nvlist_lookup_uint64(stream_nvfs,
|
|
|
|
"parentfromsnap", &stream_parent_fromsnap_guid));
|
|
|
|
|
|
|
|
/* check for rename */
|
|
|
|
if ((stream_parent_fromsnap_guid != 0 &&
|
|
|
|
stream_parent_fromsnap_guid != parent_fromsnap_guid) ||
|
|
|
|
strcmp(strrchr(fsname, '/'),
|
|
|
|
strrchr(stream_fsname, '/')) != 0) {
|
|
|
|
nvlist_t *parent;
|
|
|
|
char tryname[ZFS_MAXNAMELEN];
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
VERIFY(0 == nvlist_lookup_string(parent, "name",
|
|
|
|
&pname));
|
|
|
|
(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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
error = recv_rename(hdl, fsname, tryname,
|
|
|
|
strlen(tofs)+1, newname, flags);
|
|
|
|
if (error)
|
|
|
|
needagain = B_TRUE;
|
|
|
|
else
|
|
|
|
progress = B_TRUE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fsavl_destroy(local_avl);
|
|
|
|
nvlist_free(local_nv);
|
|
|
|
|
|
|
|
if (needagain && progress) {
|
|
|
|
/* do another pass to fix up temporary names */
|
|
|
|
if (flags.verbose)
|
|
|
|
(void) printf("another pass:\n");
|
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (needagain);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
|
2008-12-03 20:09:06 +00:00
|
|
|
recvflags_t flags, dmu_replay_record_t *drr, zio_cksum_t *zc,
|
|
|
|
char **top_zfs)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
nvlist_t *stream_nv = NULL;
|
|
|
|
avl_tree_t *stream_avl = NULL;
|
|
|
|
char *fromsnap = NULL;
|
|
|
|
char tofs[ZFS_MAXNAMELEN];
|
|
|
|
char errbuf[1024];
|
|
|
|
dmu_replay_record_t drre;
|
|
|
|
int error;
|
|
|
|
boolean_t anyerr = B_FALSE;
|
|
|
|
boolean_t softerr = B_FALSE;
|
|
|
|
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
|
|
"cannot receive"));
|
|
|
|
|
|
|
|
if (strchr(destname, '@')) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"can not specify snapshot name for multi-snapshot stream"));
|
|
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(drr->drr_type == DRR_BEGIN);
|
|
|
|
assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC);
|
|
|
|
assert(drr->drr_u.drr_begin.drr_version == DMU_BACKUP_HEADER_VERSION);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read in the nvlist from the stream.
|
|
|
|
*/
|
|
|
|
if (drr->drr_payloadlen != 0) {
|
|
|
|
if (!flags.isprefix) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"must use -d to receive replication "
|
|
|
|
"(send -R) stream"));
|
|
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
|
|
|
|
VERIFY(0 == nvlist_lookup_nvlist(stream_nv, "fss",
|
|
|
|
&stream_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) {
|
|
|
|
(void) strlcpy(tofs, destname, ZFS_MAXNAMELEN);
|
|
|
|
if (flags.isprefix) {
|
|
|
|
int i = strcspn(drr->drr_u.drr_begin.drr_toname,
|
|
|
|
"/@");
|
|
|
|
/* zfs_receive_one() will create_parents() */
|
|
|
|
(void) strlcat(tofs,
|
|
|
|
&drr->drr_u.drr_begin.drr_toname[i],
|
|
|
|
ZFS_MAXNAMELEN);
|
|
|
|
*strchr(tofs, '@') = '\0';
|
|
|
|
}
|
|
|
|
softerr = recv_incremental_replication(hdl, tofs,
|
|
|
|
flags, stream_nv, stream_avl);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 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).
|
|
|
|
*/
|
2008-12-03 20:09:06 +00:00
|
|
|
error = zfs_receive_impl(hdl, destname, flags, fd,
|
|
|
|
stream_avl, top_zfs);
|
2008-11-20 20:01:55 +00:00
|
|
|
if (error == ENODATA) {
|
|
|
|
error = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
anyerr |= error;
|
|
|
|
} while (error == 0);
|
|
|
|
|
|
|
|
if (drr->drr_payloadlen != 0 && 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
fsavl_destroy(stream_avl);
|
|
|
|
if (stream_nv)
|
|
|
|
nvlist_free(stream_nv);
|
|
|
|
if (softerr)
|
|
|
|
error = -2;
|
|
|
|
if (anyerr)
|
|
|
|
error = -1;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
|
|
|
|
{
|
|
|
|
dmu_replay_record_t *drr;
|
|
|
|
void *buf = malloc(1<<20);
|
|
|
|
|
|
|
|
/* 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:
|
|
|
|
/* NB: not to be used on v2 stream packages */
|
|
|
|
assert(drr->drr_payloadlen == 0);
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
(void) recv_read(hdl, fd, buf,
|
|
|
|
P2ROUNDUP(drr->drr_u.drr_object.drr_bonuslen, 8),
|
|
|
|
B_FALSE, NULL);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DRR_WRITE:
|
|
|
|
if (byteswap) {
|
|
|
|
drr->drr_u.drr_write.drr_length =
|
2008-12-03 20:09:06 +00:00
|
|
|
BSWAP_64(drr->drr_u.drr_write.drr_length);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
(void) recv_read(hdl, fd, buf,
|
|
|
|
drr->drr_u.drr_write.drr_length, B_FALSE, NULL);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DRR_FREEOBJECTS:
|
|
|
|
case DRR_FREE:
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
assert(!"invalid record type");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
free(buf);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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,
|
|
|
|
recvflags_t flags, dmu_replay_record_t *drr,
|
2008-12-03 20:09:06 +00:00
|
|
|
dmu_replay_record_t *drr_noswap, avl_tree_t *stream_avl,
|
|
|
|
char **top_zfs)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
time_t begin_time;
|
|
|
|
int ioctl_err, ioctl_errno, err, choplen;
|
|
|
|
char *cp;
|
|
|
|
struct drr_begin *drrb = &drr->drr_u.drr_begin;
|
|
|
|
char errbuf[1024];
|
|
|
|
char chopprefix[ZFS_MAXNAMELEN];
|
|
|
|
boolean_t newfs = B_FALSE;
|
|
|
|
boolean_t stream_wantsnewfs;
|
|
|
|
uint64_t parent_snapguid = 0;
|
|
|
|
prop_changelist_t *clp = NULL;
|
2008-12-03 20:09:06 +00:00
|
|
|
nvlist_t *snapprops_nvlist = NULL;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
begin_time = time(NULL);
|
|
|
|
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
|
|
"cannot receive"));
|
|
|
|
|
|
|
|
if (stream_avl != NULL) {
|
2008-12-03 20:09:06 +00:00
|
|
|
char *snapname;
|
|
|
|
nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid,
|
|
|
|
&snapname);
|
2008-11-20 20:01:55 +00:00
|
|
|
nvlist_t *props;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
(void) nvlist_lookup_uint64(fs, "parentfromsnap",
|
|
|
|
&parent_snapguid);
|
|
|
|
err = nvlist_lookup_nvlist(fs, "props", &props);
|
|
|
|
if (err)
|
|
|
|
VERIFY(0 == nvlist_alloc(&props, NV_UNIQUE_NAME, 0));
|
|
|
|
|
|
|
|
if (flags.canmountoff) {
|
|
|
|
VERIFY(0 == nvlist_add_uint64(props,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_CANMOUNT), 0));
|
|
|
|
}
|
|
|
|
ret = zcmd_write_src_nvlist(hdl, &zc, props);
|
|
|
|
if (err)
|
|
|
|
nvlist_free(props);
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
if (0 == nvlist_lookup_nvlist(fs, "snapprops", &props)) {
|
|
|
|
VERIFY(0 == nvlist_lookup_nvlist(props,
|
|
|
|
snapname, &snapprops_nvlist));
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
if (ret != 0)
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
(void) strcpy(chopprefix, drrb->drr_toname);
|
|
|
|
if (flags.isprefix) {
|
|
|
|
/*
|
|
|
|
* They specified a fs with -d, we want to tack on
|
|
|
|
* everything but the pool name stored in the stream
|
|
|
|
*/
|
|
|
|
if (strchr(tosnap, '@')) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
|
|
"argument - snapshot not allowed with -d"));
|
|
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
}
|
|
|
|
cp = strchr(chopprefix, '/');
|
|
|
|
if (cp == NULL)
|
|
|
|
cp = strchr(chopprefix, '@');
|
|
|
|
*cp = '\0';
|
|
|
|
} else if (strchr(tosnap, '@') == NULL) {
|
|
|
|
/*
|
|
|
|
* If they specified a filesystem without -d, we want to
|
|
|
|
* tack on everything after the fs specified in the
|
|
|
|
* first name from the stream.
|
|
|
|
*/
|
|
|
|
cp = strchr(chopprefix, '@');
|
|
|
|
*cp = '\0';
|
|
|
|
}
|
|
|
|
choplen = strlen(chopprefix);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine name of destination snapshot, store in zc_value.
|
|
|
|
*/
|
|
|
|
(void) strcpy(zc.zc_value, tosnap);
|
|
|
|
(void) strncat(zc.zc_value, drrb->drr_toname+choplen,
|
|
|
|
sizeof (zc.zc_value));
|
|
|
|
if (!zfs_name_valid(zc.zc_value, ZFS_TYPE_SNAPSHOT)) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine the name of the origin snapshot, store in zc_string.
|
|
|
|
*/
|
|
|
|
if (drrb->drr_flags & DRR_FLAG_CLONE) {
|
|
|
|
if (guid_to_name(hdl, tosnap,
|
|
|
|
drrb->drr_fromguid, zc.zc_string) != 0) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"local origin for clone %s does not exist"),
|
|
|
|
zc.zc_value);
|
|
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
}
|
|
|
|
if (flags.verbose)
|
|
|
|
(void) printf("found clone origin %s\n", zc.zc_string);
|
|
|
|
}
|
|
|
|
|
2008-12-04 22:41:11 +00:00
|
|
|
stream_wantsnewfs = (drrb->drr_fromguid == 0 ||
|
2008-11-20 20:01:55 +00:00
|
|
|
(drrb->drr_flags & DRR_FLAG_CLONE));
|
|
|
|
|
|
|
|
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(zc.zc_name, zc.zc_value);
|
|
|
|
cp = strrchr(zc.zc_name, '/');
|
|
|
|
if (cp)
|
|
|
|
*cp = '\0';
|
|
|
|
if (cp &&
|
|
|
|
!zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
|
|
|
|
char suffix[ZFS_MAXNAMELEN];
|
|
|
|
(void) strcpy(suffix, strrchr(zc.zc_value, '/'));
|
|
|
|
if (guid_to_name(hdl, tosnap, parent_snapguid,
|
|
|
|
zc.zc_value) == 0) {
|
|
|
|
*strchr(zc.zc_value, '@') = '\0';
|
|
|
|
(void) strcat(zc.zc_value, suffix);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* if the fs does not exist, look for it based on the
|
|
|
|
* fromsnap GUID
|
|
|
|
*/
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
|
|
"cannot receive incremental stream"));
|
|
|
|
|
|
|
|
(void) strcpy(zc.zc_name, zc.zc_value);
|
|
|
|
*strchr(zc.zc_name, '@') = '\0';
|
|
|
|
|
|
|
|
if (!zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
|
|
|
|
char snap[ZFS_MAXNAMELEN];
|
|
|
|
(void) strcpy(snap, strchr(zc.zc_value, '@'));
|
|
|
|
if (guid_to_name(hdl, tosnap, drrb->drr_fromguid,
|
|
|
|
zc.zc_value) == 0) {
|
|
|
|
*strchr(zc.zc_value, '@') = '\0';
|
|
|
|
(void) strcat(zc.zc_value, snap);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
(void) strcpy(zc.zc_name, zc.zc_value);
|
|
|
|
*strchr(zc.zc_name, '@') = '\0';
|
|
|
|
|
|
|
|
if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
|
|
|
|
zfs_handle_t *zhp;
|
|
|
|
/*
|
|
|
|
* Destination fs exists. Therefore this should either
|
|
|
|
* be an incremental, or the stream specifies a new fs
|
|
|
|
* (full stream or clone) and they want us to blow it
|
|
|
|
* away (and have therefore specified -F and removed any
|
|
|
|
* snapshots).
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (stream_wantsnewfs) {
|
|
|
|
if (!flags.force) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"destination '%s' exists\n"
|
|
|
|
"must specify -F to overwrite it"),
|
|
|
|
zc.zc_name);
|
|
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
|
|
}
|
|
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_SNAPSHOT_LIST_NEXT,
|
|
|
|
&zc) == 0) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"destination has snapshots (eg. %s)\n"
|
|
|
|
"must destroy them to overwrite it"),
|
|
|
|
zc.zc_name);
|
|
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((zhp = zfs_open(hdl, zc.zc_name,
|
|
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (stream_wantsnewfs &&
|
|
|
|
zhp->zfs_dmustats.dds_origin[0]) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
zfs_close(zhp);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"destination '%s' is a clone\n"
|
|
|
|
"must destroy it to overwrite it"),
|
|
|
|
zc.zc_name);
|
|
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!flags.dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM &&
|
|
|
|
stream_wantsnewfs) {
|
|
|
|
/* We can't do online recv in this case */
|
2008-12-03 20:09:06 +00:00
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0);
|
2008-11-20 20:01:55 +00:00
|
|
|
if (clp == NULL) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
if (changelist_prefix(clp) != 0) {
|
|
|
|
changelist_free(clp);
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!flags.dryrun && zhp->zfs_type == ZFS_TYPE_VOLUME &&
|
|
|
|
zvol_remove_link(hdl, zhp->zfs_name) != 0) {
|
|
|
|
zfs_close(zhp);
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* 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).
|
|
|
|
*/
|
|
|
|
if (!stream_wantsnewfs ||
|
|
|
|
(cp = strrchr(zc.zc_name, '/')) == NULL) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"destination '%s' does not exist"), zc.zc_name);
|
|
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Trim off the final dataset component so we perform the
|
|
|
|
* recvbackup ioctl to the filesystems's parent.
|
|
|
|
*/
|
|
|
|
*cp = '\0';
|
|
|
|
|
|
|
|
if (flags.isprefix && !flags.dryrun &&
|
|
|
|
create_parents(hdl, zc.zc_value, strlen(tosnap)) != 0) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (zfs_error(hdl, EZFS_BADRESTORE, errbuf));
|
|
|
|
}
|
|
|
|
|
|
|
|
newfs = B_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
zc.zc_begin_record = drr_noswap->drr_u.drr_begin;
|
|
|
|
zc.zc_cookie = infd;
|
|
|
|
zc.zc_guid = flags.force;
|
|
|
|
if (flags.verbose) {
|
|
|
|
(void) printf("%s %s stream of %s into %s\n",
|
|
|
|
flags.dryrun ? "would receive" : "receiving",
|
|
|
|
drrb->drr_fromguid ? "incremental" : "full",
|
|
|
|
drrb->drr_toname, zc.zc_value);
|
|
|
|
(void) fflush(stdout);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (flags.dryrun) {
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
return (recv_skip(hdl, infd, flags.byteswap));
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ioctl_err = zfs_ioctl(hdl, ZFS_IOC_RECV, &zc);
|
|
|
|
ioctl_errno = errno;
|
2008-12-03 20:09:06 +00:00
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
|
|
|
|
if (err == 0 && snapprops_nvlist) {
|
|
|
|
zfs_cmd_t zc2 = { 0 };
|
|
|
|
|
|
|
|
(void) strcpy(zc2.zc_name, zc.zc_value);
|
|
|
|
if (zcmd_write_src_nvlist(hdl, &zc2, snapprops_nvlist) == 0) {
|
|
|
|
(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc2);
|
|
|
|
zcmd_free_nvlists(&zc2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
if (err && (ioctl_errno == ENOENT || ioctl_errno == ENODEV)) {
|
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
2008-12-16 23:49:21 +00:00
|
|
|
cp = strchr(zc.zc_value, '@');
|
2008-11-20 20:01:55 +00:00
|
|
|
*cp = '\0';
|
|
|
|
if (gather_nvlist(hdl, zc.zc_value, NULL, NULL,
|
|
|
|
&local_nv, &local_avl) == 0) {
|
|
|
|
*cp = '@';
|
|
|
|
fs = fsavl_find(local_avl, drrb->drr_toguid, NULL);
|
|
|
|
fsavl_destroy(local_avl);
|
|
|
|
nvlist_free(local_nv);
|
|
|
|
|
|
|
|
if (fs != NULL) {
|
|
|
|
if (flags.verbose) {
|
|
|
|
(void) printf("snap %s already exists; "
|
|
|
|
"ignoring\n", zc.zc_value);
|
|
|
|
}
|
|
|
|
ioctl_err = recv_skip(hdl, infd,
|
|
|
|
flags.byteswap);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
*cp = '@';
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (ioctl_err != 0) {
|
|
|
|
switch (ioctl_errno) {
|
|
|
|
case ENODEV:
|
|
|
|
cp = strchr(zc.zc_value, '@');
|
|
|
|
*cp = '\0';
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"most recent snapshot of %s does not\n"
|
|
|
|
"match incremental source"), zc.zc_value);
|
|
|
|
(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"), zc.zc_name);
|
|
|
|
(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
|
|
break;
|
|
|
|
case EEXIST:
|
|
|
|
cp = strchr(zc.zc_value, '@');
|
|
|
|
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"),
|
|
|
|
zc.zc_value);
|
|
|
|
*cp = '@';
|
|
|
|
break;
|
|
|
|
case EINVAL:
|
|
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
|
|
break;
|
|
|
|
case ECKSUM:
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"invalid stream (checksum mismatch)"));
|
|
|
|
(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
(void) zfs_standard_error(hdl, ioctl_errno, errbuf);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mount or recreate the /dev links for the target filesystem
|
|
|
|
* (if created, or if we tore them down to do an incremental
|
|
|
|
* restore), and the /dev links for the new snapshot (if
|
|
|
|
* created). Also mount any children of the target filesystem
|
|
|
|
* if we did an incremental receive.
|
|
|
|
*/
|
|
|
|
cp = strchr(zc.zc_value, '@');
|
|
|
|
if (cp && (ioctl_err == 0 || !newfs)) {
|
|
|
|
zfs_handle_t *h;
|
|
|
|
|
|
|
|
*cp = '\0';
|
|
|
|
h = zfs_open(hdl, zc.zc_value,
|
|
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
|
|
if (h != NULL) {
|
|
|
|
if (h->zfs_type == ZFS_TYPE_VOLUME) {
|
2008-12-03 20:09:06 +00:00
|
|
|
*cp = '@';
|
2008-11-20 20:01:55 +00:00
|
|
|
err = zvol_create_link(hdl, h->zfs_name);
|
|
|
|
if (err == 0 && ioctl_err == 0)
|
|
|
|
err = zvol_create_link(hdl,
|
|
|
|
zc.zc_value);
|
|
|
|
} else if (newfs) {
|
2008-12-03 20:09:06 +00:00
|
|
|
/*
|
|
|
|
* Track the first/top of hierarchy fs,
|
|
|
|
* for mounting and sharing later.
|
|
|
|
*/
|
|
|
|
if (top_zfs && *top_zfs == NULL)
|
|
|
|
*top_zfs = zfs_strdup(hdl, zc.zc_value);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
zfs_close(h);
|
|
|
|
}
|
2008-12-03 20:09:06 +00:00
|
|
|
*cp = '@';
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (clp) {
|
|
|
|
err |= changelist_postfix(clp);
|
|
|
|
changelist_free(clp);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (err || ioctl_err)
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
if (flags.verbose) {
|
|
|
|
char buf1[64];
|
|
|
|
char buf2[64];
|
|
|
|
uint64_t bytes = zc.zc_cookie;
|
|
|
|
time_t delta = time(NULL) - begin_time;
|
|
|
|
if (delta == 0)
|
|
|
|
delta = 1;
|
|
|
|
zfs_nicenum(bytes, buf1, sizeof (buf1));
|
|
|
|
zfs_nicenum(bytes/delta, buf2, sizeof (buf1));
|
|
|
|
|
|
|
|
(void) printf("received %sB stream in %lu seconds (%sB/sec)\n",
|
|
|
|
buf1, delta, buf2);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
static int
|
|
|
|
zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
|
|
|
|
int infd, avl_tree_t *stream_avl, char **top_zfs)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
int err;
|
|
|
|
dmu_replay_record_t drr, drr_noswap;
|
|
|
|
struct drr_begin *drrb = &drr.drr_u.drr_begin;
|
|
|
|
char errbuf[1024];
|
|
|
|
zio_cksum_t zcksum = { 0 };
|
|
|
|
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
|
|
"cannot receive"));
|
|
|
|
|
|
|
|
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));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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.
|
|
|
|
*/
|
|
|
|
bzero(&zcksum, 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_version = BSWAP_64(drrb->drr_version);
|
|
|
|
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));
|
|
|
|
}
|
|
|
|
|
|
|
|
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 (drrb->drr_version == DMU_BACKUP_STREAM_VERSION) {
|
|
|
|
return (zfs_receive_one(hdl, infd, tosnap, flags,
|
2008-12-03 20:09:06 +00:00
|
|
|
&drr, &drr_noswap, stream_avl, top_zfs));
|
2008-11-20 20:01:55 +00:00
|
|
|
} else if (drrb->drr_version == DMU_BACKUP_HEADER_VERSION) {
|
|
|
|
return (zfs_receive_package(hdl, infd, tosnap, flags,
|
2008-12-03 20:09:06 +00:00
|
|
|
&drr, &zcksum, top_zfs));
|
2008-11-20 20:01:55 +00:00
|
|
|
} else {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
|
|
"stream is unsupported version %llu"),
|
|
|
|
drrb->drr_version);
|
|
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
|
|
}
|
|
|
|
}
|
2008-12-03 20:09:06 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* 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).
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
zfs_receive(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
|
|
|
|
int infd, avl_tree_t *stream_avl)
|
|
|
|
{
|
|
|
|
char *top_zfs = NULL;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = zfs_receive_impl(hdl, tosnap, flags, infd, stream_avl, &top_zfs);
|
|
|
|
|
2009-02-18 20:51:31 +00:00
|
|
|
if (err == 0 && !flags.nomount && top_zfs) {
|
2008-12-03 20:09:06 +00:00
|
|
|
zfs_handle_t *zhp;
|
|
|
|
prop_changelist_t *clp;
|
|
|
|
|
|
|
|
zhp = zfs_open(hdl, top_zfs, ZFS_TYPE_FILESYSTEM);
|
|
|
|
if (zhp != NULL) {
|
|
|
|
clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT,
|
|
|
|
CL_GATHER_MOUNT_ALWAYS, 0);
|
|
|
|
zfs_close(zhp);
|
|
|
|
if (clp != NULL) {
|
|
|
|
/* mount and share received datasets */
|
|
|
|
err = changelist_postfix(clp);
|
|
|
|
changelist_free(clp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (zhp == NULL || clp == NULL || err)
|
|
|
|
err = -1;
|
|
|
|
}
|
|
|
|
if (top_zfs)
|
|
|
|
free(top_zfs);
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|