3856 lines
94 KiB
C
3856 lines
94 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 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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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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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 <math.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 <zone.h>
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#include <fcntl.h>
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#include <sys/mntent.h>
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#include <sys/mnttab.h>
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#include <sys/mount.h>
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#include <sys/spa.h>
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#include <sys/zio.h>
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#include <sys/zap.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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static int zvol_create_link_common(libzfs_handle_t *, const char *, int);
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/*
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* Given a single type (not a mask of types), return the type in a human
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* readable form.
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*/
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const char *
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zfs_type_to_name(zfs_type_t type)
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{
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switch (type) {
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case ZFS_TYPE_FILESYSTEM:
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return (dgettext(TEXT_DOMAIN, "filesystem"));
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case ZFS_TYPE_SNAPSHOT:
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return (dgettext(TEXT_DOMAIN, "snapshot"));
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case ZFS_TYPE_VOLUME:
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return (dgettext(TEXT_DOMAIN, "volume"));
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}
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return (NULL);
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}
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/*
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* Given a path and mask of ZFS types, return a string describing this dataset.
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* This is used when we fail to open a dataset and we cannot get an exact type.
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* We guess what the type would have been based on the path and the mask of
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* acceptable types.
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*/
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static const char *
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path_to_str(const char *path, int types)
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{
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/*
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* When given a single type, always report the exact type.
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*/
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if (types == ZFS_TYPE_SNAPSHOT)
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return (dgettext(TEXT_DOMAIN, "snapshot"));
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if (types == ZFS_TYPE_FILESYSTEM)
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return (dgettext(TEXT_DOMAIN, "filesystem"));
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if (types == ZFS_TYPE_VOLUME)
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return (dgettext(TEXT_DOMAIN, "volume"));
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/*
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* The user is requesting more than one type of dataset. If this is the
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* case, consult the path itself. If we're looking for a snapshot, and
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* a '@' is found, then report it as "snapshot". Otherwise, remove the
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* snapshot attribute and try again.
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*/
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if (types & ZFS_TYPE_SNAPSHOT) {
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if (strchr(path, '@') != NULL)
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return (dgettext(TEXT_DOMAIN, "snapshot"));
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return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT));
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}
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/*
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* The user has requested either filesystems or volumes.
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* We have no way of knowing a priori what type this would be, so always
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* report it as "filesystem" or "volume", our two primitive types.
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*/
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if (types & ZFS_TYPE_FILESYSTEM)
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return (dgettext(TEXT_DOMAIN, "filesystem"));
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assert(types & ZFS_TYPE_VOLUME);
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return (dgettext(TEXT_DOMAIN, "volume"));
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}
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/*
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* Validate a ZFS path. This is used even before trying to open the dataset, to
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* provide a more meaningful error message. We place a more useful message in
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* 'buf' detailing exactly why the name was not valid.
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*/
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static int
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zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type)
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{
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namecheck_err_t why;
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char what;
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if (dataset_namecheck(path, &why, &what) != 0) {
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if (hdl != NULL) {
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switch (why) {
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case NAME_ERR_TOOLONG:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"name is too long"));
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break;
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case NAME_ERR_LEADING_SLASH:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"leading slash in name"));
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break;
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case NAME_ERR_EMPTY_COMPONENT:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"empty component in name"));
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break;
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case NAME_ERR_TRAILING_SLASH:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"trailing slash in name"));
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break;
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case NAME_ERR_INVALCHAR:
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zfs_error_aux(hdl,
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dgettext(TEXT_DOMAIN, "invalid character "
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"'%c' in name"), what);
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break;
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case NAME_ERR_MULTIPLE_AT:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"multiple '@' delimiters in name"));
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break;
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case NAME_ERR_NOLETTER:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"pool doesn't begin with a letter"));
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break;
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case NAME_ERR_RESERVED:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"name is reserved"));
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break;
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case NAME_ERR_DISKLIKE:
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"reserved disk name"));
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break;
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}
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}
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return (0);
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}
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if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) {
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if (hdl != NULL)
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"snapshot delimiter '@' in filesystem name"));
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return (0);
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}
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if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) {
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if (hdl != NULL)
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
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"missing '@' delimiter in snapshot name"));
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return (0);
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}
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return (-1);
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}
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int
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zfs_name_valid(const char *name, zfs_type_t type)
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{
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return (zfs_validate_name(NULL, name, type));
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}
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/*
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* This function takes the raw DSL properties, and filters out the user-defined
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* properties into a separate nvlist.
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*/
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static int
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process_user_props(zfs_handle_t *zhp)
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{
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libzfs_handle_t *hdl = zhp->zfs_hdl;
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nvpair_t *elem;
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nvlist_t *propval;
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nvlist_free(zhp->zfs_user_props);
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if (nvlist_alloc(&zhp->zfs_user_props, NV_UNIQUE_NAME, 0) != 0)
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return (no_memory(hdl));
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elem = NULL;
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while ((elem = nvlist_next_nvpair(zhp->zfs_props, elem)) != NULL) {
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if (!zfs_prop_user(nvpair_name(elem)))
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continue;
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verify(nvpair_value_nvlist(elem, &propval) == 0);
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if (nvlist_add_nvlist(zhp->zfs_user_props,
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nvpair_name(elem), propval) != 0)
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return (no_memory(hdl));
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}
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return (0);
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}
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/*
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* Utility function to gather stats (objset and zpl) for the given object.
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*/
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static int
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get_stats(zfs_handle_t *zhp)
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{
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zfs_cmd_t zc = { 0 };
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libzfs_handle_t *hdl = zhp->zfs_hdl;
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(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
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if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
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return (-1);
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while (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0) {
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if (errno == ENOMEM) {
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if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
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zcmd_free_nvlists(&zc);
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return (-1);
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}
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} else {
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zcmd_free_nvlists(&zc);
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return (-1);
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}
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}
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zhp->zfs_dmustats = zc.zc_objset_stats; /* structure assignment */
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(void) strlcpy(zhp->zfs_root, zc.zc_value, sizeof (zhp->zfs_root));
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if (zhp->zfs_props) {
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nvlist_free(zhp->zfs_props);
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zhp->zfs_props = NULL;
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}
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if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zfs_props) != 0) {
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zcmd_free_nvlists(&zc);
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return (-1);
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}
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zcmd_free_nvlists(&zc);
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if (process_user_props(zhp) != 0)
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return (-1);
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return (0);
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}
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/*
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* Refresh the properties currently stored in the handle.
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*/
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void
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zfs_refresh_properties(zfs_handle_t *zhp)
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{
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(void) get_stats(zhp);
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}
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/*
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* Makes a handle from the given dataset name. Used by zfs_open() and
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* zfs_iter_* to create child handles on the fly.
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*/
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zfs_handle_t *
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make_dataset_handle(libzfs_handle_t *hdl, const char *path)
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{
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zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
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if (zhp == NULL)
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return (NULL);
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zhp->zfs_hdl = hdl;
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top:
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(void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
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if (get_stats(zhp) != 0) {
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free(zhp);
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return (NULL);
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}
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if (zhp->zfs_dmustats.dds_inconsistent) {
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zfs_cmd_t zc = { 0 };
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/*
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* If it is dds_inconsistent, then we've caught it in
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* the middle of a 'zfs receive' or 'zfs destroy', and
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* it is inconsistent from the ZPL's point of view, so
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* can't be mounted. However, it could also be that we
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* have crashed in the middle of one of those
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* operations, in which case we need to get rid of the
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* inconsistent state. We do that by either rolling
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* back to the previous snapshot (which will fail if
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* there is none), or destroying the filesystem. Note
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* that if we are still in the middle of an active
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* 'receive' or 'destroy', then the rollback and destroy
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* will fail with EBUSY and we will drive on as usual.
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*/
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(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
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if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) {
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(void) zvol_remove_link(hdl, zhp->zfs_name);
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zc.zc_objset_type = DMU_OST_ZVOL;
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} else {
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zc.zc_objset_type = DMU_OST_ZFS;
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}
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/* If we can successfully roll it back, reget the stats */
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if (ioctl(hdl->libzfs_fd, ZFS_IOC_ROLLBACK, &zc) == 0)
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goto top;
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/*
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* If we can sucessfully destroy it, pretend that it
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* never existed.
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*/
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if (ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc) == 0) {
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free(zhp);
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errno = ENOENT;
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return (NULL);
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}
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}
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|
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/*
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* We've managed to open the dataset and gather statistics. Determine
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* the high-level type.
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*/
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if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
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zhp->zfs_head_type = ZFS_TYPE_VOLUME;
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else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
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zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM;
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else
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abort();
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if (zhp->zfs_dmustats.dds_is_snapshot)
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zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
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else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
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zhp->zfs_type = ZFS_TYPE_VOLUME;
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else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
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zhp->zfs_type = ZFS_TYPE_FILESYSTEM;
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else
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abort(); /* we should never see any other types */
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return (zhp);
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}
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|
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/*
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* Opens the given snapshot, filesystem, or volume. The 'types'
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* argument is a mask of acceptable types. The function will print an
|
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* appropriate error message and return NULL if it can't be opened.
|
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*/
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zfs_handle_t *
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zfs_open(libzfs_handle_t *hdl, const char *path, int types)
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{
|
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zfs_handle_t *zhp;
|
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char errbuf[1024];
|
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|
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(void) snprintf(errbuf, sizeof (errbuf),
|
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dgettext(TEXT_DOMAIN, "cannot open '%s'"), path);
|
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|
|
/*
|
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* Validate the name before we even try to open it.
|
|
*/
|
|
if (!zfs_validate_name(hdl, path, ZFS_TYPE_ANY)) {
|
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zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
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"invalid dataset name"));
|
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(void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
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return (NULL);
|
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}
|
|
|
|
/*
|
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* Try to get stats for the dataset, which will tell us if it exists.
|
|
*/
|
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errno = 0;
|
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if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
|
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(void) zfs_standard_error(hdl, errno, errbuf);
|
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return (NULL);
|
|
}
|
|
|
|
if (!(types & zhp->zfs_type)) {
|
|
(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
|
|
zfs_close(zhp);
|
|
return (NULL);
|
|
}
|
|
|
|
return (zhp);
|
|
}
|
|
|
|
/*
|
|
* Release a ZFS handle. Nothing to do but free the associated memory.
|
|
*/
|
|
void
|
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zfs_close(zfs_handle_t *zhp)
|
|
{
|
|
if (zhp->zfs_mntopts)
|
|
free(zhp->zfs_mntopts);
|
|
nvlist_free(zhp->zfs_props);
|
|
nvlist_free(zhp->zfs_user_props);
|
|
free(zhp);
|
|
}
|
|
|
|
/*
|
|
* Given a numeric suffix, convert the value into a number of bits that the
|
|
* resulting value must be shifted.
|
|
*/
|
|
static int
|
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str2shift(libzfs_handle_t *hdl, const char *buf)
|
|
{
|
|
const char *ends = "BKMGTPEZ";
|
|
int i;
|
|
|
|
if (buf[0] == '\0')
|
|
return (0);
|
|
for (i = 0; i < strlen(ends); i++) {
|
|
if (toupper(buf[0]) == ends[i])
|
|
break;
|
|
}
|
|
if (i == strlen(ends)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid numeric suffix '%s'"), buf);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't
|
|
* allow 'BB' - that's just weird.
|
|
*/
|
|
if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
|
|
toupper(buf[0]) != 'B'))
|
|
return (10*i);
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid numeric suffix '%s'"), buf);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Convert a string of the form '100G' into a real number. Used when setting
|
|
* properties or creating a volume. 'buf' is used to place an extended error
|
|
* message for the caller to use.
|
|
*/
|
|
static int
|
|
nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
|
|
{
|
|
char *end;
|
|
int shift;
|
|
|
|
*num = 0;
|
|
|
|
/* Check to see if this looks like a number. */
|
|
if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"bad numeric value '%s'"), value);
|
|
return (-1);
|
|
}
|
|
|
|
/* Rely on stroll() to process the numeric portion. */
|
|
errno = 0;
|
|
*num = strtoll(value, &end, 10);
|
|
|
|
/*
|
|
* Check for ERANGE, which indicates that the value is too large to fit
|
|
* in a 64-bit value.
|
|
*/
|
|
if (errno == ERANGE) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* If we have a decimal value, then do the computation with floating
|
|
* point arithmetic. Otherwise, use standard arithmetic.
|
|
*/
|
|
if (*end == '.') {
|
|
double fval = strtod(value, &end);
|
|
|
|
if ((shift = str2shift(hdl, end)) == -1)
|
|
return (-1);
|
|
|
|
fval *= pow(2, shift);
|
|
|
|
if (fval > UINT64_MAX) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
*num = (uint64_t)fval;
|
|
} else {
|
|
if ((shift = str2shift(hdl, end)) == -1)
|
|
return (-1);
|
|
|
|
/* Check for overflow */
|
|
if (shift >= 64 || (*num << shift) >> shift != *num) {
|
|
if (hdl)
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"numeric value is too large"));
|
|
return (-1);
|
|
}
|
|
|
|
*num <<= shift;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
zfs_nicestrtonum(libzfs_handle_t *hdl, const char *str, uint64_t *val)
|
|
{
|
|
return (nicestrtonum(hdl, str, val));
|
|
}
|
|
|
|
/*
|
|
* The prop_parse_*() functions are designed to allow flexibility in callers
|
|
* when setting properties. At the DSL layer, all properties are either 64-bit
|
|
* numbers or strings. We want the user to be able to ignore this fact and
|
|
* specify properties as native values (boolean, for example) or as strings (to
|
|
* simplify command line utilities). This also handles converting index types
|
|
* (compression, checksum, etc) from strings to their on-disk index.
|
|
*/
|
|
|
|
static int
|
|
prop_parse_boolean(libzfs_handle_t *hdl, nvpair_t *elem, uint64_t *val)
|
|
{
|
|
uint64_t ret;
|
|
|
|
switch (nvpair_type(elem)) {
|
|
case DATA_TYPE_STRING:
|
|
{
|
|
char *value;
|
|
verify(nvpair_value_string(elem, &value) == 0);
|
|
|
|
if (strcmp(value, "on") == 0) {
|
|
ret = 1;
|
|
} else if (strcmp(value, "off") == 0) {
|
|
ret = 0;
|
|
} else {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"property '%s' must be 'on' or 'off'"),
|
|
nvpair_name(elem));
|
|
return (-1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case DATA_TYPE_UINT64:
|
|
{
|
|
verify(nvpair_value_uint64(elem, &ret) == 0);
|
|
if (ret > 1) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a boolean value"),
|
|
nvpair_name(elem));
|
|
return (-1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case DATA_TYPE_BOOLEAN_VALUE:
|
|
{
|
|
boolean_t value;
|
|
verify(nvpair_value_boolean_value(elem, &value) == 0);
|
|
ret = value;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a boolean value"),
|
|
nvpair_name(elem));
|
|
return (-1);
|
|
}
|
|
|
|
*val = ret;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
prop_parse_number(libzfs_handle_t *hdl, nvpair_t *elem, zfs_prop_t prop,
|
|
uint64_t *val)
|
|
{
|
|
uint64_t ret;
|
|
boolean_t isnone = B_FALSE;
|
|
|
|
switch (nvpair_type(elem)) {
|
|
case DATA_TYPE_STRING:
|
|
{
|
|
char *value;
|
|
(void) nvpair_value_string(elem, &value);
|
|
if (strcmp(value, "none") == 0) {
|
|
isnone = B_TRUE;
|
|
ret = 0;
|
|
} else if (nicestrtonum(hdl, value, &ret) != 0) {
|
|
return (-1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case DATA_TYPE_UINT64:
|
|
(void) nvpair_value_uint64(elem, &ret);
|
|
break;
|
|
|
|
default:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a number"),
|
|
nvpair_name(elem));
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Quota special: force 'none' and don't allow 0.
|
|
*/
|
|
if (ret == 0 && !isnone && prop == ZFS_PROP_QUOTA) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"use 'none' to disable quota"));
|
|
return (-1);
|
|
}
|
|
|
|
*val = ret;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
prop_parse_index(libzfs_handle_t *hdl, nvpair_t *elem, zfs_prop_t prop,
|
|
uint64_t *val)
|
|
{
|
|
char *propname = nvpair_name(elem);
|
|
char *value;
|
|
|
|
if (nvpair_type(elem) != DATA_TYPE_STRING) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a string"), propname);
|
|
return (-1);
|
|
}
|
|
|
|
(void) nvpair_value_string(elem, &value);
|
|
|
|
if (zfs_prop_string_to_index(prop, value, val) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be one of '%s'"), propname,
|
|
zfs_prop_values(prop));
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check if the bootfs name has the same pool name as it is set to.
|
|
* Assuming bootfs is a valid dataset name.
|
|
*/
|
|
static boolean_t
|
|
bootfs_poolname_valid(char *pool, char *bootfs)
|
|
{
|
|
char ch, *pname;
|
|
|
|
/* get the pool name from the bootfs name */
|
|
pname = bootfs;
|
|
while (*bootfs && !isspace(*bootfs) && *bootfs != '/')
|
|
bootfs++;
|
|
|
|
ch = *bootfs;
|
|
*bootfs = 0;
|
|
|
|
if (strcmp(pool, pname) == 0) {
|
|
*bootfs = ch;
|
|
return (B_TRUE);
|
|
}
|
|
|
|
*bootfs = ch;
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Given an nvlist of properties to set, validates that they are correct, and
|
|
* parses any numeric properties (index, boolean, etc) if they are specified as
|
|
* strings.
|
|
*/
|
|
nvlist_t *
|
|
zfs_validate_properties(libzfs_handle_t *hdl, zfs_type_t type, char *pool_name,
|
|
nvlist_t *nvl, uint64_t zoned, zfs_handle_t *zhp, const char *errbuf)
|
|
{
|
|
nvpair_t *elem;
|
|
const char *propname;
|
|
zfs_prop_t prop;
|
|
uint64_t intval;
|
|
char *strval;
|
|
nvlist_t *ret;
|
|
int isuser;
|
|
|
|
if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) {
|
|
(void) no_memory(hdl);
|
|
return (NULL);
|
|
}
|
|
|
|
if (type == ZFS_TYPE_SNAPSHOT) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshot properties cannot be modified"));
|
|
(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
elem = NULL;
|
|
while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
|
|
propname = nvpair_name(elem);
|
|
|
|
/*
|
|
* Make sure this property is valid and applies to this type.
|
|
*/
|
|
if ((prop = zfs_name_to_prop_common(propname, type))
|
|
== ZFS_PROP_INVAL) {
|
|
isuser = zfs_prop_user(propname);
|
|
if (!isuser || (isuser && (type & ZFS_TYPE_POOL))) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid property '%s'"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
} else {
|
|
/*
|
|
* If this is a user property, make sure it's a
|
|
* string, and that it's less than
|
|
* ZAP_MAXNAMELEN.
|
|
*/
|
|
if (nvpair_type(elem) != DATA_TYPE_STRING) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a string"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if (strlen(nvpair_name(elem)) >=
|
|
ZAP_MAXNAMELEN) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"property name '%s' is too long"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
(void) nvpair_value_string(elem, &strval);
|
|
if (nvlist_add_string(ret, propname, strval) != 0) {
|
|
(void) no_memory(hdl);
|
|
goto error;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Normalize the name, to get rid of shorthand abbrevations.
|
|
*/
|
|
propname = zfs_prop_to_name(prop);
|
|
|
|
if (!zfs_prop_valid_for_type(prop, type)) {
|
|
zfs_error_aux(hdl,
|
|
dgettext(TEXT_DOMAIN, "'%s' does not "
|
|
"apply to datasets of this type"), propname);
|
|
(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if (zfs_prop_readonly(prop) &&
|
|
(prop != ZFS_PROP_VOLBLOCKSIZE || zhp != NULL)) {
|
|
zfs_error_aux(hdl,
|
|
dgettext(TEXT_DOMAIN, "'%s' is readonly"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Convert any properties to the internal DSL value types.
|
|
*/
|
|
strval = NULL;
|
|
switch (zfs_prop_get_type(prop)) {
|
|
case prop_type_boolean:
|
|
if (prop_parse_boolean(hdl, elem, &intval) != 0) {
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case prop_type_string:
|
|
if (nvpair_type(elem) != DATA_TYPE_STRING) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a string"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
(void) nvpair_value_string(elem, &strval);
|
|
if (strlen(strval) >= ZFS_MAXPROPLEN) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' is too long"), propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case prop_type_number:
|
|
if (prop_parse_number(hdl, elem, prop, &intval) != 0) {
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case prop_type_index:
|
|
if (prop_parse_index(hdl, elem, prop, &intval) != 0) {
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
/*
|
|
* Add the result to our return set of properties.
|
|
*/
|
|
if (strval) {
|
|
if (nvlist_add_string(ret, propname, strval) != 0) {
|
|
(void) no_memory(hdl);
|
|
goto error;
|
|
}
|
|
} else if (nvlist_add_uint64(ret, propname, intval) != 0) {
|
|
(void) no_memory(hdl);
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Perform some additional checks for specific properties.
|
|
*/
|
|
switch (prop) {
|
|
case ZFS_PROP_RECORDSIZE:
|
|
case ZFS_PROP_VOLBLOCKSIZE:
|
|
/* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
|
|
if (intval < SPA_MINBLOCKSIZE ||
|
|
intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be power of 2 from %u "
|
|
"to %uk"), propname,
|
|
(uint_t)SPA_MINBLOCKSIZE,
|
|
(uint_t)SPA_MAXBLOCKSIZE >> 10);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case ZFS_PROP_SHAREISCSI:
|
|
if (strcmp(strval, "off") != 0 &&
|
|
strcmp(strval, "on") != 0 &&
|
|
strcmp(strval, "type=disk") != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be 'on', 'off', or 'type=disk'"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
break;
|
|
|
|
case ZFS_PROP_MOUNTPOINT:
|
|
if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 ||
|
|
strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0)
|
|
break;
|
|
|
|
if (strval[0] != '/') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be an absolute path, "
|
|
"'none', or 'legacy'"), propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
|
|
goto error;
|
|
}
|
|
/*FALLTHRU*/
|
|
|
|
case ZFS_PROP_SHARENFS:
|
|
/*
|
|
* For the mountpoint and sharenfs properties, check if
|
|
* it can be set in a global/non-global zone based on
|
|
* the zoned property value:
|
|
*
|
|
* global zone non-global zone
|
|
* --------------------------------------------------
|
|
* zoned=on mountpoint (no) mountpoint (yes)
|
|
* sharenfs (no) sharenfs (no)
|
|
*
|
|
* zoned=off mountpoint (yes) N/A
|
|
* sharenfs (yes)
|
|
*/
|
|
if (zoned) {
|
|
if (getzoneid() == GLOBAL_ZONEID) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' cannot be set on "
|
|
"dataset in a non-global zone"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_ZONED,
|
|
errbuf);
|
|
goto error;
|
|
} else if (prop == ZFS_PROP_SHARENFS) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' cannot be set in "
|
|
"a non-global zone"), propname);
|
|
(void) zfs_error(hdl, EZFS_ZONED,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
} else if (getzoneid() != GLOBAL_ZONEID) {
|
|
/*
|
|
* If zoned property is 'off', this must be in
|
|
* a globle zone. If not, something is wrong.
|
|
*/
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' cannot be set while dataset "
|
|
"'zoned' property is set"), propname);
|
|
(void) zfs_error(hdl, EZFS_ZONED, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
break;
|
|
|
|
case ZFS_PROP_BOOTFS:
|
|
/*
|
|
* bootfs property value has to be a dataset name and
|
|
* the dataset has to be in the same pool as it sets to.
|
|
*/
|
|
if (strval[0] != '\0' && (!zfs_name_valid(strval,
|
|
ZFS_TYPE_FILESYSTEM) || !bootfs_poolname_valid(
|
|
pool_name, strval))) {
|
|
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
|
|
"is an invalid name"), strval);
|
|
(void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* For changes to existing volumes, we have some additional
|
|
* checks to enforce.
|
|
*/
|
|
if (type == ZFS_TYPE_VOLUME && zhp != NULL) {
|
|
uint64_t volsize = zfs_prop_get_int(zhp,
|
|
ZFS_PROP_VOLSIZE);
|
|
uint64_t blocksize = zfs_prop_get_int(zhp,
|
|
ZFS_PROP_VOLBLOCKSIZE);
|
|
char buf[64];
|
|
|
|
switch (prop) {
|
|
case ZFS_PROP_RESERVATION:
|
|
if (intval > volsize) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' is greater than current "
|
|
"volume size"), propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case ZFS_PROP_VOLSIZE:
|
|
if (intval % blocksize != 0) {
|
|
zfs_nicenum(blocksize, buf,
|
|
sizeof (buf));
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' must be a multiple of "
|
|
"volume block size (%s)"),
|
|
propname, buf);
|
|
(void) zfs_error(hdl, EZFS_BADPROP,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if (intval == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"'%s' cannot be zero"),
|
|
propname);
|
|
(void) zfs_error(hdl, EZFS_BADPROP,
|
|
errbuf);
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If this is an existing volume, and someone is setting the volsize,
|
|
* make sure that it matches the reservation, or add it if necessary.
|
|
*/
|
|
if (zhp != NULL && type == ZFS_TYPE_VOLUME &&
|
|
nvlist_lookup_uint64(ret, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
|
|
&intval) == 0) {
|
|
uint64_t old_volsize = zfs_prop_get_int(zhp,
|
|
ZFS_PROP_VOLSIZE);
|
|
uint64_t old_reservation = zfs_prop_get_int(zhp,
|
|
ZFS_PROP_RESERVATION);
|
|
uint64_t new_reservation;
|
|
|
|
if (old_volsize == old_reservation &&
|
|
nvlist_lookup_uint64(ret,
|
|
zfs_prop_to_name(ZFS_PROP_RESERVATION),
|
|
&new_reservation) != 0) {
|
|
if (nvlist_add_uint64(ret,
|
|
zfs_prop_to_name(ZFS_PROP_RESERVATION),
|
|
intval) != 0) {
|
|
(void) no_memory(hdl);
|
|
goto error;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (ret);
|
|
|
|
error:
|
|
nvlist_free(ret);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Given a property name and value, set the property for the given dataset.
|
|
*/
|
|
int
|
|
zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
int ret = -1;
|
|
prop_changelist_t *cl = NULL;
|
|
char errbuf[1024];
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
nvlist_t *nvl = NULL, *realprops;
|
|
zfs_prop_t prop;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
|
|
zhp->zfs_name);
|
|
|
|
if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
|
|
nvlist_add_string(nvl, propname, propval) != 0) {
|
|
(void) no_memory(hdl);
|
|
goto error;
|
|
}
|
|
|
|
if ((realprops = zfs_validate_properties(hdl, zhp->zfs_type, NULL, nvl,
|
|
zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL)
|
|
goto error;
|
|
nvlist_free(nvl);
|
|
nvl = realprops;
|
|
|
|
prop = zfs_name_to_prop(propname);
|
|
|
|
/* We don't support those properties on FreeBSD. */
|
|
switch (prop) {
|
|
case ZFS_PROP_SHAREISCSI:
|
|
case ZFS_PROP_DEVICES:
|
|
case ZFS_PROP_ACLMODE:
|
|
case ZFS_PROP_ACLINHERIT:
|
|
case ZFS_PROP_ISCSIOPTIONS:
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
"property '%s' not supported on FreeBSD", propname);
|
|
ret = zfs_error(hdl, EZFS_PERM, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if ((cl = changelist_gather(zhp, prop, 0)) == NULL)
|
|
goto error;
|
|
|
|
if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"child dataset with inherited mountpoint is used "
|
|
"in a non-global zone"));
|
|
ret = zfs_error(hdl, EZFS_ZONED, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if ((ret = changelist_prefix(cl)) != 0)
|
|
goto error;
|
|
|
|
/*
|
|
* Execute the corresponding ioctl() to set this property.
|
|
*/
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
|
|
if (zcmd_write_src_nvlist(hdl, &zc, nvl, NULL) != 0)
|
|
goto error;
|
|
|
|
ret = ioctl(hdl->libzfs_fd, ZFS_IOC_SET_PROP, &zc);
|
|
|
|
if (ret != 0) {
|
|
switch (errno) {
|
|
|
|
case ENOSPC:
|
|
/*
|
|
* For quotas and reservations, ENOSPC indicates
|
|
* something different; setting a quota or reservation
|
|
* doesn't use any disk space.
|
|
*/
|
|
switch (prop) {
|
|
case ZFS_PROP_QUOTA:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"size is less than current used or "
|
|
"reserved space"));
|
|
(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
|
|
break;
|
|
|
|
case ZFS_PROP_RESERVATION:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"size is greater than available space"));
|
|
(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
|
|
break;
|
|
|
|
default:
|
|
(void) zfs_standard_error(hdl, errno, errbuf);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case EBUSY:
|
|
if (prop == ZFS_PROP_VOLBLOCKSIZE)
|
|
(void) zfs_error(hdl, EZFS_VOLHASDATA, errbuf);
|
|
else
|
|
(void) zfs_standard_error(hdl, EBUSY, errbuf);
|
|
break;
|
|
|
|
case EROFS:
|
|
(void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
|
|
break;
|
|
|
|
case ENOTSUP:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"pool must be upgraded to allow gzip compression"));
|
|
(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
|
|
break;
|
|
|
|
case EOVERFLOW:
|
|
/*
|
|
* This platform can't address a volume this big.
|
|
*/
|
|
#ifdef _ILP32
|
|
if (prop == ZFS_PROP_VOLSIZE) {
|
|
(void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
|
|
break;
|
|
}
|
|
#endif
|
|
/* FALLTHROUGH */
|
|
default:
|
|
(void) zfs_standard_error(hdl, errno, errbuf);
|
|
}
|
|
} else {
|
|
/*
|
|
* Refresh the statistics so the new property value
|
|
* is reflected.
|
|
*/
|
|
if ((ret = changelist_postfix(cl)) == 0)
|
|
(void) get_stats(zhp);
|
|
}
|
|
|
|
error:
|
|
nvlist_free(nvl);
|
|
zcmd_free_nvlists(&zc);
|
|
if (cl)
|
|
changelist_free(cl);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Given a property, inherit the value from the parent dataset.
|
|
*/
|
|
int
|
|
zfs_prop_inherit(zfs_handle_t *zhp, const char *propname)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
int ret;
|
|
prop_changelist_t *cl;
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
char errbuf[1024];
|
|
zfs_prop_t prop;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot inherit %s for '%s'"), propname, zhp->zfs_name);
|
|
|
|
if ((prop = zfs_name_to_prop(propname)) == ZFS_PROP_INVAL) {
|
|
/*
|
|
* For user properties, the amount of work we have to do is very
|
|
* small, so just do it here.
|
|
*/
|
|
if (!zfs_prop_user(propname)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid property"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd,
|
|
ZFS_IOC_SET_PROP, &zc) != 0)
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Verify that this property is inheritable.
|
|
*/
|
|
if (zfs_prop_readonly(prop))
|
|
return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf));
|
|
|
|
if (!zfs_prop_inheritable(prop))
|
|
return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf));
|
|
|
|
/*
|
|
* Check to see if the value applies to this type
|
|
*/
|
|
if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
|
|
return (zfs_error(hdl, EZFS_PROPTYPE, errbuf));
|
|
|
|
/*
|
|
* Normalize the name, to get rid of shorthand abbrevations.
|
|
*/
|
|
propname = zfs_prop_to_name(prop);
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
|
|
|
|
if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID &&
|
|
zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset is used in a non-global zone"));
|
|
return (zfs_error(hdl, EZFS_ZONED, errbuf));
|
|
}
|
|
|
|
/*
|
|
* Determine datasets which will be affected by this change, if any.
|
|
*/
|
|
if ((cl = changelist_gather(zhp, prop, 0)) == NULL)
|
|
return (-1);
|
|
|
|
if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"child dataset with inherited mountpoint is used "
|
|
"in a non-global zone"));
|
|
ret = zfs_error(hdl, EZFS_ZONED, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if ((ret = changelist_prefix(cl)) != 0)
|
|
goto error;
|
|
|
|
if ((ret = ioctl(zhp->zfs_hdl->libzfs_fd,
|
|
ZFS_IOC_SET_PROP, &zc)) != 0) {
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
} else {
|
|
|
|
if ((ret = changelist_postfix(cl)) != 0)
|
|
goto error;
|
|
|
|
/*
|
|
* Refresh the statistics so the new property is reflected.
|
|
*/
|
|
(void) get_stats(zhp);
|
|
}
|
|
|
|
error:
|
|
changelist_free(cl);
|
|
return (ret);
|
|
}
|
|
|
|
void
|
|
nicebool(int value, char *buf, size_t buflen)
|
|
{
|
|
if (value)
|
|
(void) strlcpy(buf, "on", buflen);
|
|
else
|
|
(void) strlcpy(buf, "off", buflen);
|
|
}
|
|
|
|
/*
|
|
* True DSL properties are stored in an nvlist. The following two functions
|
|
* extract them appropriately.
|
|
*/
|
|
static uint64_t
|
|
getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
|
|
{
|
|
nvlist_t *nv;
|
|
uint64_t value;
|
|
|
|
*source = NULL;
|
|
if (nvlist_lookup_nvlist(zhp->zfs_props,
|
|
zfs_prop_to_name(prop), &nv) == 0) {
|
|
verify(nvlist_lookup_uint64(nv, ZFS_PROP_VALUE, &value) == 0);
|
|
(void) nvlist_lookup_string(nv, ZFS_PROP_SOURCE, source);
|
|
} else {
|
|
value = zfs_prop_default_numeric(prop);
|
|
*source = "";
|
|
}
|
|
|
|
return (value);
|
|
}
|
|
|
|
static char *
|
|
getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
|
|
{
|
|
nvlist_t *nv;
|
|
char *value;
|
|
|
|
*source = NULL;
|
|
if (nvlist_lookup_nvlist(zhp->zfs_props,
|
|
zfs_prop_to_name(prop), &nv) == 0) {
|
|
verify(nvlist_lookup_string(nv, ZFS_PROP_VALUE, &value) == 0);
|
|
(void) nvlist_lookup_string(nv, ZFS_PROP_SOURCE, source);
|
|
} else {
|
|
if ((value = (char *)zfs_prop_default_string(prop)) == NULL)
|
|
value = "";
|
|
*source = "";
|
|
}
|
|
|
|
return (value);
|
|
}
|
|
|
|
/*
|
|
* Internal function for getting a numeric property. Both zfs_prop_get() and
|
|
* zfs_prop_get_int() are built using this interface.
|
|
*
|
|
* Certain properties can be overridden using 'mount -o'. In this case, scan
|
|
* the contents of the /etc/mnttab entry, searching for the appropriate options.
|
|
* If they differ from the on-disk values, report the current values and mark
|
|
* the source "temporary".
|
|
*/
|
|
static int
|
|
get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zfs_source_t *src,
|
|
char **source, uint64_t *val)
|
|
{
|
|
struct mnttab mnt;
|
|
char *mntopt_on = NULL;
|
|
char *mntopt_off = NULL;
|
|
|
|
*source = NULL;
|
|
|
|
switch (prop) {
|
|
case ZFS_PROP_ATIME:
|
|
mntopt_on = MNTOPT_ATIME;
|
|
mntopt_off = MNTOPT_NOATIME;
|
|
break;
|
|
|
|
case ZFS_PROP_DEVICES:
|
|
mntopt_on = MNTOPT_DEVICES;
|
|
mntopt_off = MNTOPT_NODEVICES;
|
|
break;
|
|
|
|
case ZFS_PROP_EXEC:
|
|
mntopt_on = MNTOPT_EXEC;
|
|
mntopt_off = MNTOPT_NOEXEC;
|
|
break;
|
|
|
|
case ZFS_PROP_READONLY:
|
|
mntopt_on = MNTOPT_RO;
|
|
mntopt_off = MNTOPT_RW;
|
|
break;
|
|
|
|
case ZFS_PROP_SETUID:
|
|
mntopt_on = MNTOPT_SETUID;
|
|
mntopt_off = MNTOPT_NOSETUID;
|
|
break;
|
|
|
|
case ZFS_PROP_XATTR:
|
|
mntopt_on = MNTOPT_XATTR;
|
|
mntopt_off = MNTOPT_NOXATTR;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Because looking up the mount options is potentially expensive
|
|
* (iterating over all of /etc/mnttab), we defer its calculation until
|
|
* we're looking up a property which requires its presence.
|
|
*/
|
|
if (!zhp->zfs_mntcheck &&
|
|
(mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) {
|
|
struct mnttab entry, search = { 0 };
|
|
FILE *mnttab = zhp->zfs_hdl->libzfs_mnttab;
|
|
|
|
search.mnt_special = (char *)zhp->zfs_name;
|
|
search.mnt_fstype = MNTTYPE_ZFS;
|
|
rewind(mnttab);
|
|
|
|
if (getmntany(mnttab, &entry, &search) == 0) {
|
|
zhp->zfs_mntopts = zfs_strdup(zhp->zfs_hdl,
|
|
entry.mnt_mntopts);
|
|
if (zhp->zfs_mntopts == NULL)
|
|
return (-1);
|
|
}
|
|
|
|
zhp->zfs_mntcheck = B_TRUE;
|
|
}
|
|
|
|
if (zhp->zfs_mntopts == NULL)
|
|
mnt.mnt_mntopts = "";
|
|
else
|
|
mnt.mnt_mntopts = zhp->zfs_mntopts;
|
|
|
|
switch (prop) {
|
|
case ZFS_PROP_ATIME:
|
|
case ZFS_PROP_DEVICES:
|
|
case ZFS_PROP_EXEC:
|
|
case ZFS_PROP_READONLY:
|
|
case ZFS_PROP_SETUID:
|
|
case ZFS_PROP_XATTR:
|
|
*val = getprop_uint64(zhp, prop, source);
|
|
|
|
if (hasmntopt(&mnt, mntopt_on) && !*val) {
|
|
*val = B_TRUE;
|
|
if (src)
|
|
*src = ZFS_SRC_TEMPORARY;
|
|
} else if (hasmntopt(&mnt, mntopt_off) && *val) {
|
|
*val = B_FALSE;
|
|
if (src)
|
|
*src = ZFS_SRC_TEMPORARY;
|
|
}
|
|
break;
|
|
|
|
case ZFS_PROP_RECORDSIZE:
|
|
case ZFS_PROP_COMPRESSION:
|
|
case ZFS_PROP_ZONED:
|
|
case ZFS_PROP_CREATION:
|
|
case ZFS_PROP_COMPRESSRATIO:
|
|
case ZFS_PROP_REFERENCED:
|
|
case ZFS_PROP_USED:
|
|
case ZFS_PROP_CREATETXG:
|
|
case ZFS_PROP_AVAILABLE:
|
|
case ZFS_PROP_VOLSIZE:
|
|
case ZFS_PROP_VOLBLOCKSIZE:
|
|
*val = getprop_uint64(zhp, prop, source);
|
|
break;
|
|
|
|
case ZFS_PROP_CANMOUNT:
|
|
*val = getprop_uint64(zhp, prop, source);
|
|
if (*val == 0)
|
|
*source = zhp->zfs_name;
|
|
else
|
|
*source = ""; /* default */
|
|
break;
|
|
|
|
case ZFS_PROP_QUOTA:
|
|
case ZFS_PROP_RESERVATION:
|
|
*val = getprop_uint64(zhp, prop, source);
|
|
if (*val == 0)
|
|
*source = ""; /* default */
|
|
else
|
|
*source = zhp->zfs_name;
|
|
break;
|
|
|
|
case ZFS_PROP_MOUNTED:
|
|
*val = (zhp->zfs_mntopts != NULL);
|
|
break;
|
|
|
|
case ZFS_PROP_NUMCLONES:
|
|
*val = zhp->zfs_dmustats.dds_num_clones;
|
|
break;
|
|
|
|
default:
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"cannot get non-numeric property"));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP,
|
|
dgettext(TEXT_DOMAIN, "internal error")));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Calculate the source type, given the raw source string.
|
|
*/
|
|
static void
|
|
get_source(zfs_handle_t *zhp, zfs_source_t *srctype, char *source,
|
|
char *statbuf, size_t statlen)
|
|
{
|
|
if (statbuf == NULL || *srctype == ZFS_SRC_TEMPORARY)
|
|
return;
|
|
|
|
if (source == NULL) {
|
|
*srctype = ZFS_SRC_NONE;
|
|
} else if (source[0] == '\0') {
|
|
*srctype = ZFS_SRC_DEFAULT;
|
|
} else {
|
|
if (strcmp(source, zhp->zfs_name) == 0) {
|
|
*srctype = ZFS_SRC_LOCAL;
|
|
} else {
|
|
(void) strlcpy(statbuf, source, statlen);
|
|
*srctype = ZFS_SRC_INHERITED;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Retrieve a property from the given object. If 'literal' is specified, then
|
|
* numbers are left as exact values. Otherwise, numbers are converted to a
|
|
* human-readable form.
|
|
*
|
|
* Returns 0 on success, or -1 on error.
|
|
*/
|
|
int
|
|
zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
|
|
zfs_source_t *src, char *statbuf, size_t statlen, boolean_t literal)
|
|
{
|
|
char *source = NULL;
|
|
uint64_t val;
|
|
char *str;
|
|
const char *root;
|
|
const char *strval;
|
|
|
|
/*
|
|
* Check to see if this property applies to our object
|
|
*/
|
|
if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
|
|
return (-1);
|
|
|
|
if (src)
|
|
*src = ZFS_SRC_NONE;
|
|
|
|
switch (prop) {
|
|
case ZFS_PROP_ATIME:
|
|
case ZFS_PROP_READONLY:
|
|
case ZFS_PROP_SETUID:
|
|
case ZFS_PROP_ZONED:
|
|
case ZFS_PROP_DEVICES:
|
|
case ZFS_PROP_EXEC:
|
|
case ZFS_PROP_CANMOUNT:
|
|
case ZFS_PROP_XATTR:
|
|
/*
|
|
* Basic boolean values are built on top of
|
|
* get_numeric_property().
|
|
*/
|
|
if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
|
|
return (-1);
|
|
nicebool(val, propbuf, proplen);
|
|
|
|
break;
|
|
|
|
case ZFS_PROP_AVAILABLE:
|
|
case ZFS_PROP_RECORDSIZE:
|
|
case ZFS_PROP_CREATETXG:
|
|
case ZFS_PROP_REFERENCED:
|
|
case ZFS_PROP_USED:
|
|
case ZFS_PROP_VOLSIZE:
|
|
case ZFS_PROP_VOLBLOCKSIZE:
|
|
case ZFS_PROP_NUMCLONES:
|
|
/*
|
|
* Basic numeric values are built on top of
|
|
* get_numeric_property().
|
|
*/
|
|
if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
|
|
return (-1);
|
|
if (literal)
|
|
(void) snprintf(propbuf, proplen, "%llu",
|
|
(u_longlong_t)val);
|
|
else
|
|
zfs_nicenum(val, propbuf, proplen);
|
|
break;
|
|
|
|
case ZFS_PROP_COMPRESSION:
|
|
case ZFS_PROP_CHECKSUM:
|
|
case ZFS_PROP_SNAPDIR:
|
|
#ifdef ZFS_NO_ACL
|
|
case ZFS_PROP_ACLMODE:
|
|
case ZFS_PROP_ACLINHERIT:
|
|
case ZFS_PROP_COPIES:
|
|
val = getprop_uint64(zhp, prop, &source);
|
|
verify(zfs_prop_index_to_string(prop, val, &strval) == 0);
|
|
(void) strlcpy(propbuf, strval, proplen);
|
|
break;
|
|
#else /* ZFS_NO_ACL */
|
|
case ZFS_PROP_ACLMODE:
|
|
case ZFS_PROP_ACLINHERIT:
|
|
(void) strlcpy(propbuf, "<unsupported>", proplen);
|
|
break;
|
|
#endif /* ZFS_NO_ACL */
|
|
|
|
case ZFS_PROP_CREATION:
|
|
/*
|
|
* 'creation' is a time_t stored in the statistics. We convert
|
|
* this into a string unless 'literal' is specified.
|
|
*/
|
|
{
|
|
val = getprop_uint64(zhp, prop, &source);
|
|
time_t time = (time_t)val;
|
|
struct tm t;
|
|
|
|
if (literal ||
|
|
localtime_r(&time, &t) == NULL ||
|
|
strftime(propbuf, proplen, "%a %b %e %k:%M %Y",
|
|
&t) == 0)
|
|
(void) snprintf(propbuf, proplen, "%llu", val);
|
|
}
|
|
break;
|
|
|
|
case ZFS_PROP_MOUNTPOINT:
|
|
/*
|
|
* Getting the precise mountpoint can be tricky.
|
|
*
|
|
* - for 'none' or 'legacy', return those values.
|
|
* - for default mountpoints, construct it as /zfs/<dataset>
|
|
* - for inherited mountpoints, we want to take everything
|
|
* after our ancestor and append it to the inherited value.
|
|
*
|
|
* If the pool has an alternate root, we want to prepend that
|
|
* root to any values we return.
|
|
*/
|
|
root = zhp->zfs_root;
|
|
str = getprop_string(zhp, prop, &source);
|
|
|
|
if (str[0] == '\0') {
|
|
(void) snprintf(propbuf, proplen, "%s/zfs/%s",
|
|
root, zhp->zfs_name);
|
|
} else if (str[0] == '/') {
|
|
const char *relpath = zhp->zfs_name + strlen(source);
|
|
|
|
if (relpath[0] == '/')
|
|
relpath++;
|
|
if (str[1] == '\0')
|
|
str++;
|
|
|
|
if (relpath[0] == '\0')
|
|
(void) snprintf(propbuf, proplen, "%s%s",
|
|
root, str);
|
|
else
|
|
(void) snprintf(propbuf, proplen, "%s%s%s%s",
|
|
root, str, relpath[0] == '@' ? "" : "/",
|
|
relpath);
|
|
} else {
|
|
/* 'legacy' or 'none' */
|
|
(void) strlcpy(propbuf, str, proplen);
|
|
}
|
|
|
|
break;
|
|
|
|
case ZFS_PROP_SHARENFS:
|
|
case ZFS_PROP_SHAREISCSI:
|
|
case ZFS_PROP_ISCSIOPTIONS:
|
|
(void) strlcpy(propbuf, getprop_string(zhp, prop, &source),
|
|
proplen);
|
|
break;
|
|
|
|
case ZFS_PROP_ORIGIN:
|
|
(void) strlcpy(propbuf, getprop_string(zhp, prop, &source),
|
|
proplen);
|
|
/*
|
|
* If there is no parent at all, return failure to indicate that
|
|
* it doesn't apply to this dataset.
|
|
*/
|
|
if (propbuf[0] == '\0')
|
|
return (-1);
|
|
break;
|
|
|
|
case ZFS_PROP_QUOTA:
|
|
case ZFS_PROP_RESERVATION:
|
|
if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
|
|
return (-1);
|
|
|
|
/*
|
|
* If quota or reservation is 0, we translate this into 'none'
|
|
* (unless literal is set), and indicate that it's the default
|
|
* value. Otherwise, we print the number nicely and indicate
|
|
* that its set locally.
|
|
*/
|
|
if (val == 0) {
|
|
if (literal)
|
|
(void) strlcpy(propbuf, "0", proplen);
|
|
else
|
|
(void) strlcpy(propbuf, "none", proplen);
|
|
} else {
|
|
if (literal)
|
|
(void) snprintf(propbuf, proplen, "%llu",
|
|
(u_longlong_t)val);
|
|
else
|
|
zfs_nicenum(val, propbuf, proplen);
|
|
}
|
|
break;
|
|
|
|
case ZFS_PROP_COMPRESSRATIO:
|
|
if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
|
|
return (-1);
|
|
(void) snprintf(propbuf, proplen, "%lld.%02lldx", (longlong_t)
|
|
val / 100, (longlong_t)val % 100);
|
|
break;
|
|
|
|
case ZFS_PROP_TYPE:
|
|
switch (zhp->zfs_type) {
|
|
case ZFS_TYPE_FILESYSTEM:
|
|
str = "filesystem";
|
|
break;
|
|
case ZFS_TYPE_VOLUME:
|
|
str = "volume";
|
|
break;
|
|
case ZFS_TYPE_SNAPSHOT:
|
|
str = "snapshot";
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
(void) snprintf(propbuf, proplen, "%s", str);
|
|
break;
|
|
|
|
case ZFS_PROP_MOUNTED:
|
|
/*
|
|
* The 'mounted' property is a pseudo-property that described
|
|
* whether the filesystem is currently mounted. Even though
|
|
* it's a boolean value, the typical values of "on" and "off"
|
|
* don't make sense, so we translate to "yes" and "no".
|
|
*/
|
|
if (get_numeric_property(zhp, ZFS_PROP_MOUNTED,
|
|
src, &source, &val) != 0)
|
|
return (-1);
|
|
if (val)
|
|
(void) strlcpy(propbuf, "yes", proplen);
|
|
else
|
|
(void) strlcpy(propbuf, "no", proplen);
|
|
break;
|
|
|
|
case ZFS_PROP_NAME:
|
|
/*
|
|
* The 'name' property is a pseudo-property derived from the
|
|
* dataset name. It is presented as a real property to simplify
|
|
* consumers.
|
|
*/
|
|
(void) strlcpy(propbuf, zhp->zfs_name, proplen);
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
get_source(zhp, src, source, statbuf, statlen);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Utility function to get the given numeric property. Does no validation that
|
|
* the given property is the appropriate type; should only be used with
|
|
* hard-coded property types.
|
|
*/
|
|
uint64_t
|
|
zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop)
|
|
{
|
|
char *source;
|
|
zfs_source_t sourcetype = ZFS_SRC_NONE;
|
|
uint64_t val;
|
|
|
|
(void) get_numeric_property(zhp, prop, &sourcetype, &source, &val);
|
|
|
|
return (val);
|
|
}
|
|
|
|
/*
|
|
* Similar to zfs_prop_get(), but returns the value as an integer.
|
|
*/
|
|
int
|
|
zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value,
|
|
zfs_source_t *src, char *statbuf, size_t statlen)
|
|
{
|
|
char *source;
|
|
|
|
/*
|
|
* Check to see if this property applies to our object
|
|
*/
|
|
if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
|
|
return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE,
|
|
dgettext(TEXT_DOMAIN, "cannot get property '%s'"),
|
|
zfs_prop_to_name(prop)));
|
|
|
|
if (src)
|
|
*src = ZFS_SRC_NONE;
|
|
|
|
if (get_numeric_property(zhp, prop, src, &source, value) != 0)
|
|
return (-1);
|
|
|
|
get_source(zhp, src, source, statbuf, statlen);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Returns the name of the given zfs handle.
|
|
*/
|
|
const char *
|
|
zfs_get_name(const zfs_handle_t *zhp)
|
|
{
|
|
return (zhp->zfs_name);
|
|
}
|
|
|
|
/*
|
|
* Returns the type of the given zfs handle.
|
|
*/
|
|
zfs_type_t
|
|
zfs_get_type(const zfs_handle_t *zhp)
|
|
{
|
|
return (zhp->zfs_type);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all child filesystems
|
|
*/
|
|
int
|
|
zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
zfs_handle_t *nzhp;
|
|
int ret;
|
|
|
|
for ((void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DATASET_LIST_NEXT, &zc) == 0;
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name))) {
|
|
/*
|
|
* Ignore private dataset names.
|
|
*/
|
|
if (dataset_name_hidden(zc.zc_name))
|
|
continue;
|
|
|
|
/*
|
|
* Silently ignore errors, as the only plausible explanation is
|
|
* that the pool has since been removed.
|
|
*/
|
|
if ((nzhp = make_dataset_handle(zhp->zfs_hdl,
|
|
zc.zc_name)) == NULL)
|
|
continue;
|
|
|
|
if ((ret = func(nzhp, data)) != 0)
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* An errno value of ESRCH indicates normal completion. If ENOENT is
|
|
* returned, then the underlying dataset has been removed since we
|
|
* obtained the handle.
|
|
*/
|
|
if (errno != ESRCH && errno != ENOENT)
|
|
return (zfs_standard_error(zhp->zfs_hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot iterate filesystems")));
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all snapshots
|
|
*/
|
|
int
|
|
zfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
zfs_handle_t *nzhp;
|
|
int ret;
|
|
|
|
for ((void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SNAPSHOT_LIST_NEXT,
|
|
&zc) == 0;
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name))) {
|
|
|
|
if ((nzhp = make_dataset_handle(zhp->zfs_hdl,
|
|
zc.zc_name)) == NULL)
|
|
continue;
|
|
|
|
if ((ret = func(nzhp, data)) != 0)
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* An errno value of ESRCH indicates normal completion. If ENOENT is
|
|
* returned, then the underlying dataset has been removed since we
|
|
* obtained the handle. Silently ignore this case, and return success.
|
|
*/
|
|
if (errno != ESRCH && errno != ENOENT)
|
|
return (zfs_standard_error(zhp->zfs_hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot iterate filesystems")));
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all children, snapshots and filesystems
|
|
*/
|
|
int
|
|
zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data)
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = zfs_iter_filesystems(zhp, func, data)) != 0)
|
|
return (ret);
|
|
|
|
return (zfs_iter_snapshots(zhp, func, data));
|
|
}
|
|
|
|
/*
|
|
* Given a complete name, return just the portion that refers to the parent.
|
|
* Can return NULL if this is a pool.
|
|
*/
|
|
static int
|
|
parent_name(const char *path, char *buf, size_t buflen)
|
|
{
|
|
char *loc;
|
|
|
|
if ((loc = strrchr(path, '/')) == NULL)
|
|
return (-1);
|
|
|
|
(void) strncpy(buf, path, MIN(buflen, loc - path));
|
|
buf[loc - path] = '\0';
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Checks to make sure that the given path has a parent, and that it exists. We
|
|
* also fetch the 'zoned' property, which is used to validate property settings
|
|
* when creating new datasets.
|
|
*/
|
|
static int
|
|
check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
char parent[ZFS_MAXNAMELEN];
|
|
char *slash;
|
|
zfs_handle_t *zhp;
|
|
char errbuf[1024];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), "cannot create '%s'",
|
|
path);
|
|
|
|
/* get parent, and check to see if this is just a pool */
|
|
if (parent_name(path, parent, sizeof (parent)) != 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"missing dataset name"));
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
}
|
|
|
|
/* check to see if the pool exists */
|
|
if ((slash = strchr(parent, '/')) == NULL)
|
|
slash = parent + strlen(parent);
|
|
(void) strncpy(zc.zc_name, parent, slash - parent);
|
|
zc.zc_name[slash - parent] = '\0';
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 &&
|
|
errno == ENOENT) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"no such pool '%s'"), zc.zc_name);
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
}
|
|
|
|
/* check to see if the parent dataset exists */
|
|
if ((zhp = make_dataset_handle(hdl, parent)) == NULL) {
|
|
switch (errno) {
|
|
case ENOENT:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"parent does not exist"));
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
}
|
|
}
|
|
|
|
*zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
|
|
/* we are in a non-global zone, but parent is in the global zone */
|
|
if (getzoneid() != GLOBAL_ZONEID && !(*zoned)) {
|
|
(void) zfs_standard_error(hdl, EPERM, errbuf);
|
|
zfs_close(zhp);
|
|
return (-1);
|
|
}
|
|
|
|
/* make sure parent is a filesystem */
|
|
if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"parent is not a filesystem"));
|
|
(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
|
|
zfs_close(zhp);
|
|
return (-1);
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Create a new filesystem or volume.
|
|
*/
|
|
int
|
|
zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
|
|
nvlist_t *props)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
int ret;
|
|
uint64_t size = 0;
|
|
uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE);
|
|
char errbuf[1024];
|
|
uint64_t zoned;
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot create '%s'"), path);
|
|
|
|
/* validate the path, taking care to note the extended error message */
|
|
if (!zfs_validate_name(hdl, path, type))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
/* validate parents exist */
|
|
if (check_parents(hdl, path, &zoned) != 0)
|
|
return (-1);
|
|
|
|
/*
|
|
* The failure modes when creating a dataset of a different type over
|
|
* one that already exists is a little strange. In particular, if you
|
|
* try to create a dataset on top of an existing dataset, the ioctl()
|
|
* will return ENOENT, not EEXIST. To prevent this from happening, we
|
|
* first try to see if the dataset exists.
|
|
*/
|
|
(void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name));
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset already exists"));
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
}
|
|
|
|
if (type == ZFS_TYPE_VOLUME)
|
|
zc.zc_objset_type = DMU_OST_ZVOL;
|
|
else
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
|
|
if (props && (props = zfs_validate_properties(hdl, type, NULL, props,
|
|
zoned, NULL, errbuf)) == 0)
|
|
return (-1);
|
|
|
|
if (type == ZFS_TYPE_VOLUME) {
|
|
/*
|
|
* If we are creating a volume, the size and block size must
|
|
* satisfy a few restraints. First, the blocksize must be a
|
|
* valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the
|
|
* volsize must be a multiple of the block size, and cannot be
|
|
* zero.
|
|
*/
|
|
if (props == NULL || nvlist_lookup_uint64(props,
|
|
zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) {
|
|
nvlist_free(props);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"missing volume size"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
|
|
if ((ret = nvlist_lookup_uint64(props,
|
|
zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
|
|
&blocksize)) != 0) {
|
|
if (ret == ENOENT) {
|
|
blocksize = zfs_prop_default_numeric(
|
|
ZFS_PROP_VOLBLOCKSIZE);
|
|
} else {
|
|
nvlist_free(props);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"missing volume block size"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
}
|
|
|
|
if (size == 0) {
|
|
nvlist_free(props);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"volume size cannot be zero"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
|
|
if (size % blocksize != 0) {
|
|
nvlist_free(props);
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"volume size must be a multiple of volume block "
|
|
"size"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
}
|
|
}
|
|
|
|
if (props &&
|
|
zcmd_write_src_nvlist(hdl, &zc, props, NULL) != 0)
|
|
return (-1);
|
|
nvlist_free(props);
|
|
|
|
/* create the dataset */
|
|
ret = ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE, &zc);
|
|
|
|
if (ret == 0 && type == ZFS_TYPE_VOLUME) {
|
|
ret = zvol_create_link(hdl, path);
|
|
if (ret) {
|
|
(void) zfs_standard_error(hdl, errno,
|
|
dgettext(TEXT_DOMAIN,
|
|
"Volume successfully created, but device links "
|
|
"were not created"));
|
|
zcmd_free_nvlists(&zc);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
/* check for failure */
|
|
if (ret != 0) {
|
|
char parent[ZFS_MAXNAMELEN];
|
|
(void) parent_name(path, parent, sizeof (parent));
|
|
|
|
switch (errno) {
|
|
case ENOENT:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"no such parent '%s'"), parent);
|
|
return (zfs_error(hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EINVAL:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"parent '%s' is not a filesystem"), parent);
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
|
|
case EDOM:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"volume block size must be power of 2 from "
|
|
"%u to %uk"),
|
|
(uint_t)SPA_MINBLOCKSIZE,
|
|
(uint_t)SPA_MAXBLOCKSIZE >> 10);
|
|
|
|
return (zfs_error(hdl, EZFS_BADPROP, errbuf));
|
|
|
|
#ifdef _ILP32
|
|
case EOVERFLOW:
|
|
/*
|
|
* This platform can't address a volume this big.
|
|
*/
|
|
if (type == ZFS_TYPE_VOLUME)
|
|
return (zfs_error(hdl, EZFS_VOLTOOBIG,
|
|
errbuf));
|
|
#endif
|
|
/* FALLTHROUGH */
|
|
default:
|
|
return (zfs_standard_error(hdl, errno, errbuf));
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Destroys the given dataset. The caller must make sure that the filesystem
|
|
* isn't mounted, and that there are no active dependents.
|
|
*/
|
|
int
|
|
zfs_destroy(zfs_handle_t *zhp)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
|
|
if (ZFS_IS_VOLUME(zhp)) {
|
|
/*
|
|
* Unconditionally unshare this zvol ignoring failure as it
|
|
* indicates only that the volume wasn't shared initially.
|
|
*/
|
|
(void) zfs_unshare_iscsi(zhp);
|
|
|
|
if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0)
|
|
return (-1);
|
|
|
|
zc.zc_objset_type = DMU_OST_ZVOL;
|
|
} else {
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
}
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc) != 0) {
|
|
return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
|
|
zhp->zfs_name));
|
|
}
|
|
|
|
remove_mountpoint(zhp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
struct destroydata {
|
|
char *snapname;
|
|
boolean_t gotone;
|
|
boolean_t closezhp;
|
|
};
|
|
|
|
static int
|
|
zfs_remove_link_cb(zfs_handle_t *zhp, void *arg)
|
|
{
|
|
struct destroydata *dd = arg;
|
|
zfs_handle_t *szhp;
|
|
char name[ZFS_MAXNAMELEN];
|
|
boolean_t closezhp = dd->closezhp;
|
|
int rv;
|
|
|
|
(void) strlcpy(name, zhp->zfs_name, sizeof (name));
|
|
(void) strlcat(name, "@", sizeof (name));
|
|
(void) strlcat(name, dd->snapname, sizeof (name));
|
|
|
|
szhp = make_dataset_handle(zhp->zfs_hdl, name);
|
|
if (szhp) {
|
|
dd->gotone = B_TRUE;
|
|
zfs_close(szhp);
|
|
}
|
|
|
|
if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
|
|
(void) zvol_remove_link(zhp->zfs_hdl, name);
|
|
/*
|
|
* NB: this is simply a best-effort. We don't want to
|
|
* return an error, because then we wouldn't visit all
|
|
* the volumes.
|
|
*/
|
|
}
|
|
|
|
dd->closezhp = B_TRUE;
|
|
rv = zfs_iter_filesystems(zhp, zfs_remove_link_cb, arg);
|
|
if (closezhp)
|
|
zfs_close(zhp);
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Destroys all snapshots with the given name in zhp & descendants.
|
|
*/
|
|
int
|
|
zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
int ret;
|
|
struct destroydata dd = { 0 };
|
|
|
|
dd.snapname = snapname;
|
|
(void) zfs_remove_link_cb(zhp, &dd);
|
|
|
|
if (!dd.gotone) {
|
|
return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT,
|
|
dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"),
|
|
zhp->zfs_name, snapname));
|
|
}
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
|
|
|
|
ret = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DESTROY_SNAPS, &zc);
|
|
if (ret != 0) {
|
|
char errbuf[1024];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot destroy '%s@%s'"), zc.zc_name, snapname);
|
|
|
|
switch (errno) {
|
|
case EEXIST:
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshot is cloned"));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(zhp->zfs_hdl, errno,
|
|
errbuf));
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Clones the given dataset. The target must be of the same type as the source.
|
|
*/
|
|
int
|
|
zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
char parent[ZFS_MAXNAMELEN];
|
|
int ret;
|
|
char errbuf[1024];
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
zfs_type_t type;
|
|
uint64_t zoned;
|
|
|
|
assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot create '%s'"), target);
|
|
|
|
/* validate the target name */
|
|
if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
/* validate parents exist */
|
|
if (check_parents(hdl, target, &zoned) != 0)
|
|
return (-1);
|
|
|
|
(void) parent_name(target, parent, sizeof (parent));
|
|
|
|
/* do the clone */
|
|
if (ZFS_IS_VOLUME(zhp)) {
|
|
zc.zc_objset_type = DMU_OST_ZVOL;
|
|
type = ZFS_TYPE_VOLUME;
|
|
} else {
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
type = ZFS_TYPE_FILESYSTEM;
|
|
}
|
|
|
|
if (props) {
|
|
if ((props = zfs_validate_properties(hdl, type, NULL, props,
|
|
zoned, zhp, errbuf)) == NULL)
|
|
return (-1);
|
|
|
|
if (zcmd_write_src_nvlist(hdl, &zc, props, NULL) != 0) {
|
|
nvlist_free(props);
|
|
return (-1);
|
|
}
|
|
|
|
nvlist_free(props);
|
|
}
|
|
|
|
(void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value));
|
|
ret = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_CREATE, &zc);
|
|
|
|
zcmd_free_nvlists(&zc);
|
|
|
|
if (ret != 0) {
|
|
switch (errno) {
|
|
|
|
case ENOENT:
|
|
/*
|
|
* The parent doesn't exist. We should have caught this
|
|
* above, but there may a race condition that has since
|
|
* destroyed the parent.
|
|
*
|
|
* At this point, we don't know whether it's the source
|
|
* that doesn't exist anymore, or whether the target
|
|
* dataset doesn't exist.
|
|
*/
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"no such parent '%s'"), parent);
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
|
|
|
|
case EXDEV:
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"source and target pools differ"));
|
|
return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET,
|
|
errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(zhp->zfs_hdl, errno,
|
|
errbuf));
|
|
}
|
|
} else if (ZFS_IS_VOLUME(zhp)) {
|
|
ret = zvol_create_link(zhp->zfs_hdl, target);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
typedef struct promote_data {
|
|
char cb_mountpoint[MAXPATHLEN];
|
|
const char *cb_target;
|
|
const char *cb_errbuf;
|
|
uint64_t cb_pivot_txg;
|
|
} promote_data_t;
|
|
|
|
static int
|
|
promote_snap_cb(zfs_handle_t *zhp, void *data)
|
|
{
|
|
promote_data_t *pd = data;
|
|
zfs_handle_t *szhp;
|
|
char snapname[MAXPATHLEN];
|
|
int rv = 0;
|
|
|
|
/* We don't care about snapshots after the pivot point */
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > pd->cb_pivot_txg) {
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
/* Remove the device link if it's a zvol. */
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
(void) zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name);
|
|
|
|
/* Check for conflicting names */
|
|
(void) strlcpy(snapname, pd->cb_target, sizeof (snapname));
|
|
(void) strlcat(snapname, strchr(zhp->zfs_name, '@'), sizeof (snapname));
|
|
szhp = make_dataset_handle(zhp->zfs_hdl, snapname);
|
|
if (szhp != NULL) {
|
|
zfs_close(szhp);
|
|
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshot name '%s' from origin \n"
|
|
"conflicts with '%s' from target"),
|
|
zhp->zfs_name, snapname);
|
|
rv = zfs_error(zhp->zfs_hdl, EZFS_EXISTS, pd->cb_errbuf);
|
|
}
|
|
zfs_close(zhp);
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
promote_snap_done_cb(zfs_handle_t *zhp, void *data)
|
|
{
|
|
promote_data_t *pd = data;
|
|
|
|
/* We don't care about snapshots after the pivot point */
|
|
if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) <= pd->cb_pivot_txg) {
|
|
/* Create the device link if it's a zvol. */
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
(void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Promotes the given clone fs to be the clone parent.
|
|
*/
|
|
int
|
|
zfs_promote(zfs_handle_t *zhp)
|
|
{
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
zfs_cmd_t zc = { 0 };
|
|
char parent[MAXPATHLEN];
|
|
char *cp;
|
|
int ret;
|
|
zfs_handle_t *pzhp;
|
|
promote_data_t pd;
|
|
char errbuf[1024];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot promote '%s'"), zhp->zfs_name);
|
|
|
|
if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshots can not be promoted"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
|
|
(void) strlcpy(parent, zhp->zfs_dmustats.dds_clone_of, sizeof (parent));
|
|
if (parent[0] == '\0') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"not a cloned filesystem"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
cp = strchr(parent, '@');
|
|
*cp = '\0';
|
|
|
|
/* Walk the snapshots we will be moving */
|
|
pzhp = zfs_open(hdl, zhp->zfs_dmustats.dds_clone_of, ZFS_TYPE_SNAPSHOT);
|
|
if (pzhp == NULL)
|
|
return (-1);
|
|
pd.cb_pivot_txg = zfs_prop_get_int(pzhp, ZFS_PROP_CREATETXG);
|
|
zfs_close(pzhp);
|
|
pd.cb_target = zhp->zfs_name;
|
|
pd.cb_errbuf = errbuf;
|
|
pzhp = zfs_open(hdl, parent, ZFS_TYPE_ANY);
|
|
if (pzhp == NULL)
|
|
return (-1);
|
|
(void) zfs_prop_get(pzhp, ZFS_PROP_MOUNTPOINT, pd.cb_mountpoint,
|
|
sizeof (pd.cb_mountpoint), NULL, NULL, 0, FALSE);
|
|
ret = zfs_iter_snapshots(pzhp, promote_snap_cb, &pd);
|
|
if (ret != 0) {
|
|
zfs_close(pzhp);
|
|
return (-1);
|
|
}
|
|
|
|
/* issue the ioctl */
|
|
(void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_clone_of,
|
|
sizeof (zc.zc_value));
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
ret = ioctl(hdl->libzfs_fd, ZFS_IOC_PROMOTE, &zc);
|
|
|
|
if (ret != 0) {
|
|
int save_errno = errno;
|
|
|
|
(void) zfs_iter_snapshots(pzhp, promote_snap_done_cb, &pd);
|
|
zfs_close(pzhp);
|
|
|
|
switch (save_errno) {
|
|
case EEXIST:
|
|
/*
|
|
* There is a conflicting snapshot name. We
|
|
* should have caught this above, but they could
|
|
* have renamed something in the mean time.
|
|
*/
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"conflicting snapshot name from parent '%s'"),
|
|
parent);
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
|
|
default:
|
|
return (zfs_standard_error(hdl, save_errno, errbuf));
|
|
}
|
|
} else {
|
|
(void) zfs_iter_snapshots(zhp, promote_snap_done_cb, &pd);
|
|
}
|
|
|
|
zfs_close(pzhp);
|
|
return (ret);
|
|
}
|
|
|
|
struct createdata {
|
|
const char *cd_snapname;
|
|
int cd_ifexists;
|
|
};
|
|
|
|
static int
|
|
zfs_create_link_cb(zfs_handle_t *zhp, void *arg)
|
|
{
|
|
struct createdata *cd = arg;
|
|
int ret;
|
|
|
|
if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
|
|
char name[MAXPATHLEN];
|
|
|
|
(void) strlcpy(name, zhp->zfs_name, sizeof (name));
|
|
(void) strlcat(name, "@", sizeof (name));
|
|
(void) strlcat(name, cd->cd_snapname, sizeof (name));
|
|
(void) zvol_create_link_common(zhp->zfs_hdl, name,
|
|
cd->cd_ifexists);
|
|
/*
|
|
* NB: this is simply a best-effort. We don't want to
|
|
* return an error, because then we wouldn't visit all
|
|
* the volumes.
|
|
*/
|
|
}
|
|
|
|
ret = zfs_iter_filesystems(zhp, zfs_create_link_cb, cd);
|
|
|
|
zfs_close(zhp);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Takes a snapshot of the given dataset.
|
|
*/
|
|
int
|
|
zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive)
|
|
{
|
|
const char *delim;
|
|
char *parent;
|
|
zfs_handle_t *zhp;
|
|
zfs_cmd_t zc = { 0 };
|
|
int ret;
|
|
char errbuf[1024];
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot snapshot '%s'"), path);
|
|
|
|
/* validate the target name */
|
|
if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
/* make sure the parent exists and is of the appropriate type */
|
|
delim = strchr(path, '@');
|
|
if ((parent = zfs_alloc(hdl, delim - path + 1)) == NULL)
|
|
return (-1);
|
|
(void) strncpy(parent, path, delim - path);
|
|
parent[delim - path] = '\0';
|
|
|
|
if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM |
|
|
ZFS_TYPE_VOLUME)) == NULL) {
|
|
free(parent);
|
|
return (-1);
|
|
}
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value));
|
|
zc.zc_cookie = recursive;
|
|
ret = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SNAPSHOT, &zc);
|
|
|
|
/*
|
|
* if it was recursive, the one that actually failed will be in
|
|
* zc.zc_name.
|
|
*/
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value);
|
|
if (ret == 0 && recursive) {
|
|
struct createdata cd;
|
|
|
|
cd.cd_snapname = delim + 1;
|
|
cd.cd_ifexists = B_FALSE;
|
|
(void) zfs_iter_filesystems(zhp, zfs_create_link_cb, &cd);
|
|
}
|
|
if (ret == 0 && zhp->zfs_type == ZFS_TYPE_VOLUME) {
|
|
ret = zvol_create_link(zhp->zfs_hdl, path);
|
|
if (ret != 0) {
|
|
(void) ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DESTROY,
|
|
&zc);
|
|
}
|
|
}
|
|
|
|
if (ret != 0)
|
|
(void) zfs_standard_error(hdl, errno, errbuf);
|
|
|
|
free(parent);
|
|
zfs_close(zhp);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Dumps a backup of the given snapshot (incremental from fromsnap if it's not
|
|
* NULL) to the file descriptor specified by outfd.
|
|
*/
|
|
int
|
|
zfs_send(zfs_handle_t *zhp, const char *fromsnap, int outfd)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
char errbuf[1024];
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
|
|
assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
if (fromsnap)
|
|
(void) strlcpy(zc.zc_value, fromsnap, sizeof (zc.zc_name));
|
|
zc.zc_cookie = outfd;
|
|
|
|
if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SENDBACKUP, &zc) != 0) {
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"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 EDQUOT:
|
|
case EFBIG:
|
|
case EIO:
|
|
case ENOLINK:
|
|
case ENOSPC:
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* Create ancestors of 'target', but not target itself, and not
|
|
* ancestors whose names are shorter than prefixlen. Die if
|
|
* prefixlen-ancestor does not exist.
|
|
*/
|
|
static int
|
|
create_parents(libzfs_handle_t *hdl, char *target, int prefixlen)
|
|
{
|
|
zfs_handle_t *h;
|
|
char *cp;
|
|
|
|
/* make sure prefix exists */
|
|
cp = strchr(target + prefixlen, '/');
|
|
*cp = '\0';
|
|
h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
|
|
*cp = '/';
|
|
if (h == NULL)
|
|
return (-1);
|
|
zfs_close(h);
|
|
|
|
/*
|
|
* Attempt to create, mount, and share any ancestor filesystems,
|
|
* up to the prefixlen-long one.
|
|
*/
|
|
for (cp = target + prefixlen + 1;
|
|
cp = strchr(cp, '/'); *cp = '/', cp++) {
|
|
const char *opname;
|
|
|
|
*cp = '\0';
|
|
|
|
h = make_dataset_handle(hdl, target);
|
|
if (h) {
|
|
/* it already exists, nothing to do here */
|
|
zfs_close(h);
|
|
continue;
|
|
}
|
|
|
|
opname = dgettext(TEXT_DOMAIN, "create");
|
|
if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM,
|
|
NULL) != 0)
|
|
goto ancestorerr;
|
|
|
|
opname = dgettext(TEXT_DOMAIN, "open");
|
|
h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
|
|
if (h == NULL)
|
|
goto ancestorerr;
|
|
|
|
opname = dgettext(TEXT_DOMAIN, "mount");
|
|
if (zfs_mount(h, NULL, 0) != 0)
|
|
goto ancestorerr;
|
|
|
|
opname = dgettext(TEXT_DOMAIN, "share");
|
|
if (zfs_share(h) != 0)
|
|
goto ancestorerr;
|
|
|
|
zfs_close(h);
|
|
|
|
continue;
|
|
ancestorerr:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"failed to %s ancestor '%s'"), opname, target);
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Restores a backup of tosnap from the file descriptor specified by infd.
|
|
*/
|
|
int
|
|
zfs_receive(libzfs_handle_t *hdl, const char *tosnap, int isprefix,
|
|
int verbose, int dryrun, boolean_t force, int infd)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
time_t begin_time;
|
|
int ioctl_err, err, bytes, size, choplen;
|
|
char *cp;
|
|
dmu_replay_record_t drr;
|
|
struct drr_begin *drrb = &zc.zc_begin_record;
|
|
char errbuf[1024];
|
|
prop_changelist_t *clp;
|
|
char chopprefix[ZFS_MAXNAMELEN];
|
|
|
|
begin_time = time(NULL);
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot receive"));
|
|
|
|
/* read in the BEGIN record */
|
|
cp = (char *)&drr;
|
|
bytes = 0;
|
|
do {
|
|
size = read(infd, cp, sizeof (drr) - bytes);
|
|
cp += size;
|
|
bytes += size;
|
|
} while (size > 0);
|
|
|
|
if (size < 0 || bytes != sizeof (drr)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (failed to read first record)"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
zc.zc_begin_record = drr.drr_u.drr_begin;
|
|
|
|
if (drrb->drr_magic != DMU_BACKUP_MAGIC &&
|
|
drrb->drr_magic != BSWAP_64(DMU_BACKUP_MAGIC)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (bad magic number)"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
if (drrb->drr_version != DMU_BACKUP_VERSION &&
|
|
drrb->drr_version != BSWAP_64(DMU_BACKUP_VERSION)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only version "
|
|
"0x%llx is supported (stream is version 0x%llx)"),
|
|
DMU_BACKUP_VERSION, drrb->drr_version);
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
|
|
if (strchr(drr.drr_u.drr_begin.drr_toname, '@') == NULL) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
|
|
"stream (bad snapshot name)"));
|
|
return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
|
|
}
|
|
/*
|
|
* 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, drr.drr_u.drr_begin.drr_toname);
|
|
if (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, drr.drr_u.drr_begin.drr_toname+choplen,
|
|
sizeof (zc.zc_value));
|
|
if (!zfs_validate_name(hdl, zc.zc_value, ZFS_TYPE_SNAPSHOT))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
|
|
(void) strcpy(zc.zc_name, zc.zc_value);
|
|
if (drrb->drr_fromguid) {
|
|
/* incremental backup stream */
|
|
zfs_handle_t *h;
|
|
|
|
/* do the recvbackup ioctl to the containing fs */
|
|
*strchr(zc.zc_name, '@') = '\0';
|
|
|
|
/* make sure destination fs exists */
|
|
h = zfs_open(hdl, zc.zc_name,
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
if (h == NULL)
|
|
return (-1);
|
|
if (!dryrun) {
|
|
/*
|
|
* We need to unmount all the dependents of the dataset
|
|
* and the dataset itself. If it's a volume
|
|
* then remove device link.
|
|
*/
|
|
if (h->zfs_type == ZFS_TYPE_FILESYSTEM) {
|
|
clp = changelist_gather(h, ZFS_PROP_NAME, 0);
|
|
if (clp == NULL)
|
|
return (-1);
|
|
if (changelist_prefix(clp) != 0) {
|
|
changelist_free(clp);
|
|
return (-1);
|
|
}
|
|
} else {
|
|
(void) zvol_remove_link(hdl, h->zfs_name);
|
|
}
|
|
}
|
|
zfs_close(h);
|
|
} else {
|
|
/* full backup stream */
|
|
|
|
/* Make sure destination fs does not exist */
|
|
*strchr(zc.zc_name, '@') = '\0';
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination '%s' exists"), zc.zc_name);
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
}
|
|
|
|
if (strchr(zc.zc_name, '/') == NULL) {
|
|
/*
|
|
* they're trying to do a recv into a
|
|
* nonexistant topmost filesystem.
|
|
*/
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination does not exist"), zc.zc_name);
|
|
return (zfs_error(hdl, EZFS_EXISTS, errbuf));
|
|
}
|
|
|
|
/* Do the recvbackup ioctl to the fs's parent. */
|
|
*strrchr(zc.zc_name, '/') = '\0';
|
|
|
|
if (isprefix && (err = create_parents(hdl,
|
|
zc.zc_value, strlen(tosnap))) != 0) {
|
|
return (zfs_error(hdl, EZFS_BADRESTORE, errbuf));
|
|
}
|
|
|
|
}
|
|
|
|
zc.zc_cookie = infd;
|
|
zc.zc_guid = force;
|
|
if (verbose) {
|
|
(void) printf("%s %s stream of %s into %s\n",
|
|
dryrun ? "would receive" : "receiving",
|
|
drrb->drr_fromguid ? "incremental" : "full",
|
|
drr.drr_u.drr_begin.drr_toname,
|
|
zc.zc_value);
|
|
(void) fflush(stdout);
|
|
}
|
|
if (dryrun)
|
|
return (0);
|
|
err = ioctl_err = ioctl(hdl->libzfs_fd, ZFS_IOC_RECVBACKUP, &zc);
|
|
if (ioctl_err != 0) {
|
|
switch (errno) {
|
|
case ENODEV:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"most recent snapshot does not match incremental "
|
|
"source"));
|
|
(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
break;
|
|
case ETXTBSY:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"destination has been modified since most recent "
|
|
"snapshot"));
|
|
(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
|
|
break;
|
|
case EEXIST:
|
|
if (drrb->drr_fromguid == 0) {
|
|
/* it's the containing fs that exists */
|
|
cp = strchr(zc.zc_value, '@');
|
|
*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);
|
|
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, 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 || drrb->drr_fromguid)) {
|
|
zfs_handle_t *h;
|
|
|
|
*cp = '\0';
|
|
h = zfs_open(hdl, zc.zc_value,
|
|
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
|
|
*cp = '@';
|
|
if (h) {
|
|
if (h->zfs_type == ZFS_TYPE_VOLUME) {
|
|
err = zvol_create_link(hdl, h->zfs_name);
|
|
if (err == 0 && ioctl_err == 0)
|
|
err = zvol_create_link(hdl,
|
|
zc.zc_value);
|
|
} else {
|
|
if (drrb->drr_fromguid) {
|
|
err = changelist_postfix(clp);
|
|
changelist_free(clp);
|
|
} else {
|
|
err = zfs_mount(h, NULL, 0);
|
|
}
|
|
}
|
|
zfs_close(h);
|
|
}
|
|
}
|
|
|
|
if (err || ioctl_err)
|
|
return (-1);
|
|
|
|
if (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);
|
|
}
|
|
|
|
/*
|
|
* Destroy any more recent snapshots. We invoke this callback on any dependents
|
|
* of the snapshot first. If the 'cb_dependent' member is non-zero, then this
|
|
* is a dependent and we should just destroy it without checking the transaction
|
|
* group.
|
|
*/
|
|
typedef struct rollback_data {
|
|
const char *cb_target; /* the snapshot */
|
|
uint64_t cb_create; /* creation time reference */
|
|
prop_changelist_t *cb_clp; /* changelist pointer */
|
|
int cb_error;
|
|
boolean_t cb_dependent;
|
|
} rollback_data_t;
|
|
|
|
static int
|
|
rollback_destroy(zfs_handle_t *zhp, void *data)
|
|
{
|
|
rollback_data_t *cbp = data;
|
|
|
|
if (!cbp->cb_dependent) {
|
|
if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 &&
|
|
zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
|
|
zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
|
|
cbp->cb_create) {
|
|
|
|
cbp->cb_dependent = B_TRUE;
|
|
if (zfs_iter_dependents(zhp, B_FALSE, rollback_destroy,
|
|
cbp) != 0)
|
|
cbp->cb_error = 1;
|
|
cbp->cb_dependent = B_FALSE;
|
|
|
|
if (zfs_destroy(zhp) != 0)
|
|
cbp->cb_error = 1;
|
|
else
|
|
changelist_remove(zhp, cbp->cb_clp);
|
|
}
|
|
} else {
|
|
if (zfs_destroy(zhp) != 0)
|
|
cbp->cb_error = 1;
|
|
else
|
|
changelist_remove(zhp, cbp->cb_clp);
|
|
}
|
|
|
|
zfs_close(zhp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Rollback the dataset to its latest snapshot.
|
|
*/
|
|
static int
|
|
do_rollback(zfs_handle_t *zhp)
|
|
{
|
|
int ret;
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM ||
|
|
zhp->zfs_type == ZFS_TYPE_VOLUME);
|
|
|
|
if (zhp->zfs_type == ZFS_TYPE_VOLUME &&
|
|
zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0)
|
|
return (-1);
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
zc.zc_objset_type = DMU_OST_ZVOL;
|
|
else
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
|
|
/*
|
|
* We rely on the consumer to verify that there are no newer snapshots
|
|
* for the given dataset. Given these constraints, we can simply pass
|
|
* the name on to the ioctl() call. There is still an unlikely race
|
|
* condition where the user has taken a snapshot since we verified that
|
|
* this was the most recent.
|
|
*/
|
|
if ((ret = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_ROLLBACK,
|
|
&zc)) != 0) {
|
|
(void) zfs_standard_error_fmt(zhp->zfs_hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot rollback '%s'"),
|
|
zhp->zfs_name);
|
|
} else if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
|
|
ret = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Given a dataset, rollback to a specific snapshot, discarding any
|
|
* data changes since then and making it the active dataset.
|
|
*
|
|
* Any snapshots more recent than the target are destroyed, along with
|
|
* their dependents.
|
|
*/
|
|
int
|
|
zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, int flag)
|
|
{
|
|
int ret;
|
|
rollback_data_t cb = { 0 };
|
|
prop_changelist_t *clp;
|
|
|
|
/*
|
|
* Unmount all dependendents of the dataset and the dataset itself.
|
|
* The list we need to gather is the same as for doing rename
|
|
*/
|
|
clp = changelist_gather(zhp, ZFS_PROP_NAME, flag ? MS_FORCE: 0);
|
|
if (clp == NULL)
|
|
return (-1);
|
|
|
|
if ((ret = changelist_prefix(clp)) != 0)
|
|
goto out;
|
|
|
|
/*
|
|
* Destroy all recent snapshots and its dependends.
|
|
*/
|
|
cb.cb_target = snap->zfs_name;
|
|
cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
|
|
cb.cb_clp = clp;
|
|
(void) zfs_iter_children(zhp, rollback_destroy, &cb);
|
|
|
|
if ((ret = cb.cb_error) != 0) {
|
|
(void) changelist_postfix(clp);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Now that we have verified that the snapshot is the latest,
|
|
* rollback to the given snapshot.
|
|
*/
|
|
ret = do_rollback(zhp);
|
|
|
|
if (ret != 0) {
|
|
(void) changelist_postfix(clp);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* We only want to re-mount the filesystem if it was mounted in the
|
|
* first place.
|
|
*/
|
|
ret = changelist_postfix(clp);
|
|
|
|
out:
|
|
changelist_free(clp);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all dependents for a given dataset. This includes both
|
|
* hierarchical dependents (children) and data dependents (snapshots and
|
|
* clones). The bulk of the processing occurs in get_dependents() in
|
|
* libzfs_graph.c.
|
|
*/
|
|
int
|
|
zfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion,
|
|
zfs_iter_f func, void *data)
|
|
{
|
|
char **dependents;
|
|
size_t count;
|
|
int i;
|
|
zfs_handle_t *child;
|
|
int ret = 0;
|
|
|
|
if (get_dependents(zhp->zfs_hdl, allowrecursion, zhp->zfs_name,
|
|
&dependents, &count) != 0)
|
|
return (-1);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if ((child = make_dataset_handle(zhp->zfs_hdl,
|
|
dependents[i])) == NULL)
|
|
continue;
|
|
|
|
if ((ret = func(child, data)) != 0)
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < count; i++)
|
|
free(dependents[i]);
|
|
free(dependents);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Renames the given dataset.
|
|
*/
|
|
int
|
|
zfs_rename(zfs_handle_t *zhp, const char *target, int recursive)
|
|
{
|
|
int ret;
|
|
zfs_cmd_t zc = { 0 };
|
|
char *delim;
|
|
prop_changelist_t *cl = NULL;
|
|
zfs_handle_t *zhrp = NULL;
|
|
char *parentname = NULL;
|
|
char parent[ZFS_MAXNAMELEN];
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
char errbuf[1024];
|
|
|
|
/* if we have the same exact name, just return success */
|
|
if (strcmp(zhp->zfs_name, target) == 0)
|
|
return (0);
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot rename to '%s'"), target);
|
|
|
|
/*
|
|
* Make sure the target name is valid
|
|
*/
|
|
if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
|
|
if ((strchr(target, '@') == NULL) ||
|
|
*target == '@') {
|
|
/*
|
|
* Snapshot target name is abbreviated,
|
|
* reconstruct full dataset name
|
|
*/
|
|
(void) strlcpy(parent, zhp->zfs_name,
|
|
sizeof (parent));
|
|
delim = strchr(parent, '@');
|
|
if (strchr(target, '@') == NULL)
|
|
*(++delim) = '\0';
|
|
else
|
|
*delim = '\0';
|
|
(void) strlcat(parent, target, sizeof (parent));
|
|
target = parent;
|
|
} else {
|
|
/*
|
|
* Make sure we're renaming within the same dataset.
|
|
*/
|
|
delim = strchr(target, '@');
|
|
if (strncmp(zhp->zfs_name, target, delim - target)
|
|
!= 0 || zhp->zfs_name[delim - target] != '@') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshots must be part of same "
|
|
"dataset"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET,
|
|
errbuf));
|
|
}
|
|
}
|
|
if (!zfs_validate_name(hdl, target, zhp->zfs_type))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
} else {
|
|
if (recursive) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"recursive rename must be a snapshot"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
|
|
if (!zfs_validate_name(hdl, target, zhp->zfs_type))
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
uint64_t unused;
|
|
|
|
/* validate parents */
|
|
if (check_parents(hdl, target, &unused) != 0)
|
|
return (-1);
|
|
|
|
(void) parent_name(target, parent, sizeof (parent));
|
|
|
|
/* make sure we're in the same pool */
|
|
verify((delim = strchr(target, '/')) != NULL);
|
|
if (strncmp(zhp->zfs_name, target, delim - target) != 0 ||
|
|
zhp->zfs_name[delim - target] != '/') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"datasets must be within same pool"));
|
|
return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
|
|
}
|
|
|
|
/* new name cannot be a child of the current dataset name */
|
|
if (strncmp(parent, zhp->zfs_name,
|
|
strlen(zhp->zfs_name)) == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"New dataset name cannot be a descendent of "
|
|
"current dataset name"));
|
|
return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
|
|
}
|
|
}
|
|
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name);
|
|
|
|
if (getzoneid() == GLOBAL_ZONEID &&
|
|
zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"dataset is used in a non-global zone"));
|
|
return (zfs_error(hdl, EZFS_ZONED, errbuf));
|
|
}
|
|
|
|
if (recursive) {
|
|
struct destroydata dd;
|
|
|
|
parentname = strdup(zhp->zfs_name);
|
|
delim = strchr(parentname, '@');
|
|
*delim = '\0';
|
|
zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_ANY);
|
|
if (zhrp == NULL) {
|
|
return (-1);
|
|
}
|
|
|
|
dd.snapname = delim + 1;
|
|
dd.gotone = B_FALSE;
|
|
dd.closezhp = B_FALSE;
|
|
|
|
/* We remove any zvol links prior to renaming them */
|
|
ret = zfs_iter_filesystems(zhrp, zfs_remove_link_cb, &dd);
|
|
if (ret) {
|
|
goto error;
|
|
}
|
|
} else {
|
|
if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0)) == NULL)
|
|
return (-1);
|
|
|
|
if (changelist_haszonedchild(cl)) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"child dataset with inherited mountpoint is used "
|
|
"in a non-global zone"));
|
|
(void) zfs_error(hdl, EZFS_ZONED, errbuf);
|
|
goto error;
|
|
}
|
|
|
|
if ((ret = changelist_prefix(cl)) != 0)
|
|
goto error;
|
|
}
|
|
|
|
if (ZFS_IS_VOLUME(zhp))
|
|
zc.zc_objset_type = DMU_OST_ZVOL;
|
|
else
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
(void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
|
|
|
|
zc.zc_cookie = recursive;
|
|
|
|
if ((ret = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_RENAME, &zc)) != 0) {
|
|
/*
|
|
* if it was recursive, the one that actually failed will
|
|
* be in zc.zc_name
|
|
*/
|
|
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
|
|
"cannot rename to '%s'"), zc.zc_name);
|
|
|
|
if (recursive && errno == EEXIST) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"a child dataset already has a snapshot "
|
|
"with the new name"));
|
|
(void) zfs_error(hdl, EZFS_CROSSTARGET, errbuf);
|
|
} else {
|
|
(void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf);
|
|
}
|
|
|
|
/*
|
|
* On failure, we still want to remount any filesystems that
|
|
* were previously mounted, so we don't alter the system state.
|
|
*/
|
|
if (recursive) {
|
|
struct createdata cd;
|
|
|
|
/* only create links for datasets that had existed */
|
|
cd.cd_snapname = delim + 1;
|
|
cd.cd_ifexists = B_TRUE;
|
|
(void) zfs_iter_filesystems(zhrp, zfs_create_link_cb,
|
|
&cd);
|
|
} else {
|
|
(void) changelist_postfix(cl);
|
|
}
|
|
} else {
|
|
if (recursive) {
|
|
struct createdata cd;
|
|
|
|
/* only create links for datasets that had existed */
|
|
cd.cd_snapname = strchr(target, '@') + 1;
|
|
cd.cd_ifexists = B_TRUE;
|
|
ret = zfs_iter_filesystems(zhrp, zfs_create_link_cb,
|
|
&cd);
|
|
} else {
|
|
changelist_rename(cl, zfs_get_name(zhp), target);
|
|
ret = changelist_postfix(cl);
|
|
}
|
|
}
|
|
|
|
error:
|
|
if (parentname) {
|
|
free(parentname);
|
|
}
|
|
if (zhrp) {
|
|
zfs_close(zhrp);
|
|
}
|
|
if (cl) {
|
|
changelist_free(cl);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Given a zvol dataset, issue the ioctl to create the appropriate minor node,
|
|
* poke devfsadm to create the /dev link, and then wait for the link to appear.
|
|
*/
|
|
int
|
|
zvol_create_link(libzfs_handle_t *hdl, const char *dataset)
|
|
{
|
|
return (zvol_create_link_common(hdl, dataset, B_FALSE));
|
|
}
|
|
|
|
static int
|
|
zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
#if 0
|
|
di_devlink_handle_t dhdl;
|
|
#endif
|
|
|
|
(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
|
|
|
|
/*
|
|
* Issue the appropriate ioctl.
|
|
*/
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE_MINOR, &zc) != 0) {
|
|
switch (errno) {
|
|
case EEXIST:
|
|
/*
|
|
* Silently ignore the case where the link already
|
|
* exists. This allows 'zfs volinit' to be run multiple
|
|
* times without errors.
|
|
*/
|
|
return (0);
|
|
|
|
case ENOENT:
|
|
/*
|
|
* Dataset does not exist in the kernel. If we
|
|
* don't care (see zfs_rename), then ignore the
|
|
* error quietly.
|
|
*/
|
|
if (ifexists) {
|
|
return (0);
|
|
}
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
default:
|
|
return (zfs_standard_error_fmt(hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot create device links "
|
|
"for '%s'"), dataset));
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* Call devfsadm and wait for the links to magically appear.
|
|
*/
|
|
if ((dhdl = di_devlink_init(ZFS_DRIVER, DI_MAKE_LINK)) == NULL) {
|
|
zfs_error_aux(hdl, strerror(errno));
|
|
(void) zfs_error_fmt(hdl, EZFS_DEVLINKS,
|
|
dgettext(TEXT_DOMAIN, "cannot create device links "
|
|
"for '%s'"), dataset);
|
|
(void) ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc);
|
|
return (-1);
|
|
} else {
|
|
(void) di_devlink_fini(&dhdl);
|
|
}
|
|
#endif
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Remove a minor node for the given zvol and the associated /dev links.
|
|
*/
|
|
int
|
|
zvol_remove_link(libzfs_handle_t *hdl, const char *dataset)
|
|
{
|
|
zfs_cmd_t zc = { 0 };
|
|
|
|
(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
|
|
|
|
if (ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc) != 0) {
|
|
switch (errno) {
|
|
case ENXIO:
|
|
/*
|
|
* Silently ignore the case where the link no longer
|
|
* exists, so that 'zfs volfini' can be run multiple
|
|
* times without errors.
|
|
*/
|
|
return (0);
|
|
|
|
default:
|
|
return (zfs_standard_error_fmt(hdl, errno,
|
|
dgettext(TEXT_DOMAIN, "cannot remove device "
|
|
"links for '%s'"), dataset));
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
nvlist_t *
|
|
zfs_get_user_props(zfs_handle_t *zhp)
|
|
{
|
|
return (zhp->zfs_user_props);
|
|
}
|
|
|
|
/*
|
|
* Given a comma-separated list of properties, contruct a property list
|
|
* containing both user-defined and native properties. This function will
|
|
* return a NULL list if 'all' is specified, which can later be expanded on a
|
|
* per-dataset basis by zfs_expand_proplist().
|
|
*/
|
|
int
|
|
zfs_get_proplist_common(libzfs_handle_t *hdl, char *fields,
|
|
zfs_proplist_t **listp, zfs_type_t type)
|
|
{
|
|
size_t len;
|
|
char *s, *p;
|
|
char c;
|
|
zfs_prop_t prop;
|
|
zfs_proplist_t *entry;
|
|
zfs_proplist_t **last;
|
|
|
|
*listp = NULL;
|
|
last = listp;
|
|
|
|
/*
|
|
* If 'all' is specified, return a NULL list.
|
|
*/
|
|
if (strcmp(fields, "all") == 0)
|
|
return (0);
|
|
|
|
/*
|
|
* If no fields were specified, return an error.
|
|
*/
|
|
if (fields[0] == '\0') {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"no properties specified"));
|
|
return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
|
|
"bad property list")));
|
|
}
|
|
|
|
/*
|
|
* It would be nice to use getsubopt() here, but the inclusion of column
|
|
* aliases makes this more effort than it's worth.
|
|
*/
|
|
s = fields;
|
|
while (*s != '\0') {
|
|
if ((p = strchr(s, ',')) == NULL) {
|
|
len = strlen(s);
|
|
p = s + len;
|
|
} else {
|
|
len = p - s;
|
|
}
|
|
|
|
/*
|
|
* Check for empty options.
|
|
*/
|
|
if (len == 0) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"empty property name"));
|
|
return (zfs_error(hdl, EZFS_BADPROP,
|
|
dgettext(TEXT_DOMAIN, "bad property list")));
|
|
}
|
|
|
|
/*
|
|
* Check all regular property names.
|
|
*/
|
|
c = s[len];
|
|
s[len] = '\0';
|
|
prop = zfs_name_to_prop_common(s, type);
|
|
|
|
if (prop != ZFS_PROP_INVAL &&
|
|
!zfs_prop_valid_for_type(prop, type))
|
|
prop = ZFS_PROP_INVAL;
|
|
|
|
/*
|
|
* When no property table entry can be found, return failure if
|
|
* this is a pool property or if this isn't a user-defined
|
|
* dataset property,
|
|
*/
|
|
if (prop == ZFS_PROP_INVAL &&
|
|
(type & ZFS_TYPE_POOL || !zfs_prop_user(s))) {
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"invalid property '%s'"), s);
|
|
return (zfs_error(hdl, EZFS_BADPROP,
|
|
dgettext(TEXT_DOMAIN, "bad property list")));
|
|
}
|
|
|
|
if ((entry = zfs_alloc(hdl, sizeof (zfs_proplist_t))) == NULL)
|
|
return (-1);
|
|
|
|
entry->pl_prop = prop;
|
|
if (prop == ZFS_PROP_INVAL) {
|
|
if ((entry->pl_user_prop =
|
|
zfs_strdup(hdl, s)) == NULL) {
|
|
free(entry);
|
|
return (-1);
|
|
}
|
|
entry->pl_width = strlen(s);
|
|
} else {
|
|
entry->pl_width = zfs_prop_width(prop,
|
|
&entry->pl_fixed);
|
|
}
|
|
|
|
*last = entry;
|
|
last = &entry->pl_next;
|
|
|
|
s = p;
|
|
if (c == ',')
|
|
s++;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
zfs_get_proplist(libzfs_handle_t *hdl, char *fields, zfs_proplist_t **listp)
|
|
{
|
|
return (zfs_get_proplist_common(hdl, fields, listp, ZFS_TYPE_ANY));
|
|
}
|
|
|
|
void
|
|
zfs_free_proplist(zfs_proplist_t *pl)
|
|
{
|
|
zfs_proplist_t *next;
|
|
|
|
while (pl != NULL) {
|
|
next = pl->pl_next;
|
|
free(pl->pl_user_prop);
|
|
free(pl);
|
|
pl = next;
|
|
}
|
|
}
|
|
|
|
typedef struct expand_data {
|
|
zfs_proplist_t **last;
|
|
libzfs_handle_t *hdl;
|
|
} expand_data_t;
|
|
|
|
static zfs_prop_t
|
|
zfs_expand_proplist_cb(zfs_prop_t prop, void *cb)
|
|
{
|
|
zfs_proplist_t *entry;
|
|
expand_data_t *edp = cb;
|
|
|
|
if ((entry = zfs_alloc(edp->hdl, sizeof (zfs_proplist_t))) == NULL)
|
|
return (ZFS_PROP_INVAL);
|
|
|
|
entry->pl_prop = prop;
|
|
entry->pl_width = zfs_prop_width(prop, &entry->pl_fixed);
|
|
entry->pl_all = B_TRUE;
|
|
|
|
*(edp->last) = entry;
|
|
edp->last = &entry->pl_next;
|
|
|
|
return (ZFS_PROP_CONT);
|
|
}
|
|
|
|
int
|
|
zfs_expand_proplist_common(libzfs_handle_t *hdl, zfs_proplist_t **plp,
|
|
zfs_type_t type)
|
|
{
|
|
zfs_proplist_t *entry;
|
|
zfs_proplist_t **last;
|
|
expand_data_t exp;
|
|
|
|
if (*plp == NULL) {
|
|
/*
|
|
* If this is the very first time we've been called for an 'all'
|
|
* specification, expand the list to include all native
|
|
* properties.
|
|
*/
|
|
last = plp;
|
|
|
|
exp.last = last;
|
|
exp.hdl = hdl;
|
|
|
|
if (zfs_prop_iter_common(zfs_expand_proplist_cb, &exp, type,
|
|
B_FALSE) == ZFS_PROP_INVAL)
|
|
return (-1);
|
|
|
|
/*
|
|
* Add 'name' to the beginning of the list, which is handled
|
|
* specially.
|
|
*/
|
|
if ((entry = zfs_alloc(hdl,
|
|
sizeof (zfs_proplist_t))) == NULL)
|
|
return (-1);
|
|
|
|
entry->pl_prop = ZFS_PROP_NAME;
|
|
entry->pl_width = zfs_prop_width(ZFS_PROP_NAME,
|
|
&entry->pl_fixed);
|
|
entry->pl_all = B_TRUE;
|
|
entry->pl_next = *plp;
|
|
*plp = entry;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This function is used by 'zfs list' to determine the exact set of columns to
|
|
* display, and their maximum widths. This does two main things:
|
|
*
|
|
* - If this is a list of all properties, then expand the list to include
|
|
* all native properties, and set a flag so that for each dataset we look
|
|
* for new unique user properties and add them to the list.
|
|
*
|
|
* - For non fixed-width properties, keep track of the maximum width seen
|
|
* so that we can size the column appropriately.
|
|
*/
|
|
int
|
|
zfs_expand_proplist(zfs_handle_t *zhp, zfs_proplist_t **plp)
|
|
{
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
zfs_proplist_t *entry;
|
|
zfs_proplist_t **last, **start;
|
|
nvlist_t *userprops, *propval;
|
|
nvpair_t *elem;
|
|
char *strval;
|
|
char buf[ZFS_MAXPROPLEN];
|
|
|
|
if (zfs_expand_proplist_common(hdl, plp, ZFS_TYPE_ANY) != 0)
|
|
return (-1);
|
|
|
|
userprops = zfs_get_user_props(zhp);
|
|
|
|
entry = *plp;
|
|
if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) {
|
|
/*
|
|
* Go through and add any user properties as necessary. We
|
|
* start by incrementing our list pointer to the first
|
|
* non-native property.
|
|
*/
|
|
start = plp;
|
|
while (*start != NULL) {
|
|
if ((*start)->pl_prop == ZFS_PROP_INVAL)
|
|
break;
|
|
start = &(*start)->pl_next;
|
|
}
|
|
|
|
elem = NULL;
|
|
while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) {
|
|
/*
|
|
* See if we've already found this property in our list.
|
|
*/
|
|
for (last = start; *last != NULL;
|
|
last = &(*last)->pl_next) {
|
|
if (strcmp((*last)->pl_user_prop,
|
|
nvpair_name(elem)) == 0)
|
|
break;
|
|
}
|
|
|
|
if (*last == NULL) {
|
|
if ((entry = zfs_alloc(hdl,
|
|
sizeof (zfs_proplist_t))) == NULL ||
|
|
((entry->pl_user_prop = zfs_strdup(hdl,
|
|
nvpair_name(elem)))) == NULL) {
|
|
free(entry);
|
|
return (-1);
|
|
}
|
|
|
|
entry->pl_prop = ZFS_PROP_INVAL;
|
|
entry->pl_width = strlen(nvpair_name(elem));
|
|
entry->pl_all = B_TRUE;
|
|
*last = entry;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now go through and check the width of any non-fixed columns
|
|
*/
|
|
for (entry = *plp; entry != NULL; entry = entry->pl_next) {
|
|
if (entry->pl_fixed)
|
|
continue;
|
|
|
|
if (entry->pl_prop != ZFS_PROP_INVAL) {
|
|
if (zfs_prop_get(zhp, entry->pl_prop,
|
|
buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) {
|
|
if (strlen(buf) > entry->pl_width)
|
|
entry->pl_width = strlen(buf);
|
|
}
|
|
} else if (nvlist_lookup_nvlist(userprops,
|
|
entry->pl_user_prop, &propval) == 0) {
|
|
verify(nvlist_lookup_string(propval,
|
|
ZFS_PROP_VALUE, &strval) == 0);
|
|
if (strlen(strval) > entry->pl_width)
|
|
entry->pl_width = strlen(strval);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Attach/detach the given filesystem to/from the given jail.
|
|
*/
|
|
int
|
|
zfs_jail(zfs_handle_t *zhp, int jailid, int attach)
|
|
{
|
|
libzfs_handle_t *hdl = zhp->zfs_hdl;
|
|
zfs_cmd_t zc = { 0 };
|
|
char errbuf[1024];
|
|
int cmd, ret;
|
|
|
|
if (attach) {
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name);
|
|
} else {
|
|
(void) snprintf(errbuf, sizeof (errbuf),
|
|
dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name);
|
|
}
|
|
|
|
switch (zhp->zfs_type) {
|
|
case ZFS_TYPE_VOLUME:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"volumes can not be jailed"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
case ZFS_TYPE_SNAPSHOT:
|
|
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
|
|
"snapshots can not be jailed"));
|
|
return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
|
|
}
|
|
assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
|
|
|
|
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
|
|
zc.zc_objset_type = DMU_OST_ZFS;
|
|
zc.zc_jailid = jailid;
|
|
|
|
cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL;
|
|
if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0)
|
|
zfs_standard_error(hdl, errno, errbuf);
|
|
|
|
return (ret);
|
|
}
|