| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| /* |
| * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2019 Joyent, Inc. |
| * Copyright (c) 2011, 2017 by Delphix. All rights reserved. |
| * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. |
| * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. |
| * Copyright (c) 2013 Martin Matuska. All rights reserved. |
| * Copyright (c) 2013 Steven Hartland. All rights reserved. |
| * Copyright 2017 Nexenta Systems, Inc. |
| * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> |
| * Copyright 2017-2018 RackTop Systems. |
| * Copyright (c) 2019 Datto Inc. |
| * Copyright (c) 2019, loli10K <ezomori.nozomu@gmail.com> |
| */ |
| |
| #include <ctype.h> |
| #include <errno.h> |
| #include <libintl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <strings.h> |
| #include <unistd.h> |
| #include <stddef.h> |
| #include <zone.h> |
| #include <fcntl.h> |
| #include <sys/mntent.h> |
| #include <sys/mount.h> |
| #include <pwd.h> |
| #include <grp.h> |
| #include <stddef.h> |
| #include <ucred.h> |
| #ifdef HAVE_IDMAP |
| #include <idmap.h> |
| #include <aclutils.h> |
| #include <directory.h> |
| #endif /* HAVE_IDMAP */ |
| |
| #include <sys/dnode.h> |
| #include <sys/spa.h> |
| #include <sys/zap.h> |
| #include <sys/dsl_crypt.h> |
| #include <libzfs.h> |
| #include <libzutil.h> |
| |
| #include "zfs_namecheck.h" |
| #include "zfs_prop.h" |
| #include "libzfs_impl.h" |
| #include "libzfs.h" |
| #include "zfs_deleg.h" |
| |
| static int userquota_propname_decode(const char *propname, boolean_t zoned, |
| zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); |
| |
| /* |
| * Given a single type (not a mask of types), return the type in a human |
| * readable form. |
| */ |
| const char * |
| zfs_type_to_name(zfs_type_t type) |
| { |
| switch (type) { |
| case ZFS_TYPE_FILESYSTEM: |
| return (dgettext(TEXT_DOMAIN, "filesystem")); |
| case ZFS_TYPE_SNAPSHOT: |
| return (dgettext(TEXT_DOMAIN, "snapshot")); |
| case ZFS_TYPE_VOLUME: |
| return (dgettext(TEXT_DOMAIN, "volume")); |
| case ZFS_TYPE_POOL: |
| return (dgettext(TEXT_DOMAIN, "pool")); |
| case ZFS_TYPE_BOOKMARK: |
| return (dgettext(TEXT_DOMAIN, "bookmark")); |
| default: |
| assert(!"unhandled zfs_type_t"); |
| } |
| |
| return (NULL); |
| } |
| |
| /* |
| * Validate a ZFS path. This is used even before trying to open the dataset, to |
| * provide a more meaningful error message. We call zfs_error_aux() to |
| * explain exactly why the name was not valid. |
| */ |
| int |
| zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, |
| boolean_t modifying) |
| { |
| namecheck_err_t why; |
| char what; |
| |
| if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { |
| if (hdl != NULL) |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "snapshot delimiter '@' is not expected here")); |
| return (0); |
| } |
| |
| if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { |
| if (hdl != NULL) |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "missing '@' delimiter in snapshot name")); |
| return (0); |
| } |
| |
| if (!(type & ZFS_TYPE_BOOKMARK) && strchr(path, '#') != NULL) { |
| if (hdl != NULL) |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "bookmark delimiter '#' is not expected here")); |
| return (0); |
| } |
| |
| if (type == ZFS_TYPE_BOOKMARK && strchr(path, '#') == NULL) { |
| if (hdl != NULL) |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "missing '#' delimiter in bookmark name")); |
| return (0); |
| } |
| |
| if (modifying && strchr(path, '%') != NULL) { |
| if (hdl != NULL) |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid character %c in name"), '%'); |
| return (0); |
| } |
| |
| if (entity_namecheck(path, &why, &what) != 0) { |
| if (hdl != NULL) { |
| switch (why) { |
| case NAME_ERR_TOOLONG: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "name is too long")); |
| break; |
| |
| case NAME_ERR_LEADING_SLASH: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "leading slash in name")); |
| break; |
| |
| case NAME_ERR_EMPTY_COMPONENT: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "empty component or misplaced '@'" |
| " or '#' delimiter in name")); |
| break; |
| |
| case NAME_ERR_TRAILING_SLASH: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "trailing slash in name")); |
| break; |
| |
| case NAME_ERR_INVALCHAR: |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, "invalid character " |
| "'%c' in name"), what); |
| break; |
| |
| case NAME_ERR_MULTIPLE_DELIMITERS: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "multiple '@' and/or '#' delimiters in " |
| "name")); |
| break; |
| |
| case NAME_ERR_NOLETTER: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool doesn't begin with a letter")); |
| break; |
| |
| case NAME_ERR_RESERVED: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "name is reserved")); |
| break; |
| |
| case NAME_ERR_DISKLIKE: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "reserved disk name")); |
| break; |
| |
| case NAME_ERR_SELF_REF: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "self reference, '.' is found in name")); |
| break; |
| |
| case NAME_ERR_PARENT_REF: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "parent reference, '..' is found in name")); |
| break; |
| |
| default: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "(%d) not defined"), why); |
| break; |
| } |
| } |
| |
| return (0); |
| } |
| |
| return (-1); |
| } |
| |
| int |
| zfs_name_valid(const char *name, zfs_type_t type) |
| { |
| if (type == ZFS_TYPE_POOL) |
| return (zpool_name_valid(NULL, B_FALSE, name)); |
| return (zfs_validate_name(NULL, name, type, B_FALSE)); |
| } |
| |
| /* |
| * This function takes the raw DSL properties, and filters out the user-defined |
| * properties into a separate nvlist. |
| */ |
| static nvlist_t * |
| process_user_props(zfs_handle_t *zhp, nvlist_t *props) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| nvpair_t *elem; |
| nvlist_t *propval; |
| nvlist_t *nvl; |
| |
| if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { |
| (void) no_memory(hdl); |
| return (NULL); |
| } |
| |
| elem = NULL; |
| while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { |
| if (!zfs_prop_user(nvpair_name(elem))) |
| continue; |
| |
| verify(nvpair_value_nvlist(elem, &propval) == 0); |
| if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { |
| nvlist_free(nvl); |
| (void) no_memory(hdl); |
| return (NULL); |
| } |
| } |
| |
| return (nvl); |
| } |
| |
| static zpool_handle_t * |
| zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| zpool_handle_t *zph; |
| |
| if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { |
| if (hdl->libzfs_pool_handles != NULL) |
| zph->zpool_next = hdl->libzfs_pool_handles; |
| hdl->libzfs_pool_handles = zph; |
| } |
| return (zph); |
| } |
| |
| static zpool_handle_t * |
| zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| zpool_handle_t *zph = hdl->libzfs_pool_handles; |
| |
| while ((zph != NULL) && |
| (strncmp(pool_name, zpool_get_name(zph), len) != 0)) |
| zph = zph->zpool_next; |
| return (zph); |
| } |
| |
| /* |
| * Returns a handle to the pool that contains the provided dataset. |
| * If a handle to that pool already exists then that handle is returned. |
| * Otherwise, a new handle is created and added to the list of handles. |
| */ |
| static zpool_handle_t * |
| zpool_handle(zfs_handle_t *zhp) |
| { |
| char *pool_name; |
| int len; |
| zpool_handle_t *zph; |
| |
| len = strcspn(zhp->zfs_name, "/@#") + 1; |
| pool_name = zfs_alloc(zhp->zfs_hdl, len); |
| (void) strlcpy(pool_name, zhp->zfs_name, len); |
| |
| zph = zpool_find_handle(zhp, pool_name, len); |
| if (zph == NULL) |
| zph = zpool_add_handle(zhp, pool_name); |
| |
| free(pool_name); |
| return (zph); |
| } |
| |
| void |
| zpool_free_handles(libzfs_handle_t *hdl) |
| { |
| zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; |
| |
| while (zph != NULL) { |
| next = zph->zpool_next; |
| zpool_close(zph); |
| zph = next; |
| } |
| hdl->libzfs_pool_handles = NULL; |
| } |
| |
| /* |
| * Utility function to gather stats (objset and zpl) for the given object. |
| */ |
| static int |
| get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| |
| (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); |
| |
| while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { |
| if (errno == ENOMEM) { |
| if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { |
| return (-1); |
| } |
| } else { |
| return (-1); |
| } |
| } |
| return (0); |
| } |
| |
| /* |
| * Utility function to get the received properties of the given object. |
| */ |
| static int |
| get_recvd_props_ioctl(zfs_handle_t *zhp) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| nvlist_t *recvdprops; |
| zfs_cmd_t zc = {"\0"}; |
| int err; |
| |
| if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) |
| return (-1); |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { |
| if (errno == ENOMEM) { |
| if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { |
| return (-1); |
| } |
| } else { |
| zcmd_free_nvlists(&zc); |
| return (-1); |
| } |
| } |
| |
| err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); |
| zcmd_free_nvlists(&zc); |
| if (err != 0) |
| return (-1); |
| |
| nvlist_free(zhp->zfs_recvd_props); |
| zhp->zfs_recvd_props = recvdprops; |
| |
| return (0); |
| } |
| |
| static int |
| put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) |
| { |
| nvlist_t *allprops, *userprops; |
| |
| zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ |
| |
| if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { |
| return (-1); |
| } |
| |
| /* |
| * XXX Why do we store the user props separately, in addition to |
| * storing them in zfs_props? |
| */ |
| if ((userprops = process_user_props(zhp, allprops)) == NULL) { |
| nvlist_free(allprops); |
| return (-1); |
| } |
| |
| nvlist_free(zhp->zfs_props); |
| nvlist_free(zhp->zfs_user_props); |
| |
| zhp->zfs_props = allprops; |
| zhp->zfs_user_props = userprops; |
| |
| return (0); |
| } |
| |
| static int |
| get_stats(zfs_handle_t *zhp) |
| { |
| int rc = 0; |
| zfs_cmd_t zc = {"\0"}; |
| |
| if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
| return (-1); |
| if (get_stats_ioctl(zhp, &zc) != 0) |
| rc = -1; |
| else if (put_stats_zhdl(zhp, &zc) != 0) |
| rc = -1; |
| zcmd_free_nvlists(&zc); |
| return (rc); |
| } |
| |
| /* |
| * Refresh the properties currently stored in the handle. |
| */ |
| void |
| zfs_refresh_properties(zfs_handle_t *zhp) |
| { |
| (void) get_stats(zhp); |
| } |
| |
| /* |
| * Makes a handle from the given dataset name. Used by zfs_open() and |
| * zfs_iter_* to create child handles on the fly. |
| */ |
| static int |
| make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) |
| { |
| if (put_stats_zhdl(zhp, zc) != 0) |
| return (-1); |
| |
| /* |
| * We've managed to open the dataset and gather statistics. Determine |
| * the high-level type. |
| */ |
| if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) |
| zhp->zfs_head_type = ZFS_TYPE_VOLUME; |
| else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) |
| zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; |
| else if (zhp->zfs_dmustats.dds_type == DMU_OST_OTHER) |
| return (-1); |
| else |
| abort(); |
| |
| if (zhp->zfs_dmustats.dds_is_snapshot) |
| zhp->zfs_type = ZFS_TYPE_SNAPSHOT; |
| else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) |
| zhp->zfs_type = ZFS_TYPE_VOLUME; |
| else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) |
| zhp->zfs_type = ZFS_TYPE_FILESYSTEM; |
| else |
| abort(); /* we should never see any other types */ |
| |
| if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) |
| return (-1); |
| |
| return (0); |
| } |
| |
| zfs_handle_t * |
| make_dataset_handle(libzfs_handle_t *hdl, const char *path) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| |
| zfs_handle_t *zhp = calloc(1, sizeof (zfs_handle_t)); |
| |
| if (zhp == NULL) |
| return (NULL); |
| |
| zhp->zfs_hdl = hdl; |
| (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); |
| if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { |
| free(zhp); |
| return (NULL); |
| } |
| if (get_stats_ioctl(zhp, &zc) == -1) { |
| zcmd_free_nvlists(&zc); |
| free(zhp); |
| return (NULL); |
| } |
| if (make_dataset_handle_common(zhp, &zc) == -1) { |
| free(zhp); |
| zhp = NULL; |
| } |
| zcmd_free_nvlists(&zc); |
| return (zhp); |
| } |
| |
| zfs_handle_t * |
| make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) |
| { |
| zfs_handle_t *zhp = calloc(1, sizeof (zfs_handle_t)); |
| |
| if (zhp == NULL) |
| return (NULL); |
| |
| zhp->zfs_hdl = hdl; |
| (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); |
| if (make_dataset_handle_common(zhp, zc) == -1) { |
| free(zhp); |
| return (NULL); |
| } |
| return (zhp); |
| } |
| |
| zfs_handle_t * |
| make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) |
| { |
| zfs_handle_t *zhp = calloc(1, sizeof (zfs_handle_t)); |
| |
| if (zhp == NULL) |
| return (NULL); |
| |
| zhp->zfs_hdl = pzhp->zfs_hdl; |
| (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); |
| zhp->zfs_head_type = pzhp->zfs_type; |
| zhp->zfs_type = ZFS_TYPE_SNAPSHOT; |
| zhp->zpool_hdl = zpool_handle(zhp); |
| |
| return (zhp); |
| } |
| |
| zfs_handle_t * |
| zfs_handle_dup(zfs_handle_t *zhp_orig) |
| { |
| zfs_handle_t *zhp = calloc(1, sizeof (zfs_handle_t)); |
| |
| if (zhp == NULL) |
| return (NULL); |
| |
| zhp->zfs_hdl = zhp_orig->zfs_hdl; |
| zhp->zpool_hdl = zhp_orig->zpool_hdl; |
| (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, |
| sizeof (zhp->zfs_name)); |
| zhp->zfs_type = zhp_orig->zfs_type; |
| zhp->zfs_head_type = zhp_orig->zfs_head_type; |
| zhp->zfs_dmustats = zhp_orig->zfs_dmustats; |
| if (zhp_orig->zfs_props != NULL) { |
| if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { |
| (void) no_memory(zhp->zfs_hdl); |
| zfs_close(zhp); |
| return (NULL); |
| } |
| } |
| if (zhp_orig->zfs_user_props != NULL) { |
| if (nvlist_dup(zhp_orig->zfs_user_props, |
| &zhp->zfs_user_props, 0) != 0) { |
| (void) no_memory(zhp->zfs_hdl); |
| zfs_close(zhp); |
| return (NULL); |
| } |
| } |
| if (zhp_orig->zfs_recvd_props != NULL) { |
| if (nvlist_dup(zhp_orig->zfs_recvd_props, |
| &zhp->zfs_recvd_props, 0)) { |
| (void) no_memory(zhp->zfs_hdl); |
| zfs_close(zhp); |
| return (NULL); |
| } |
| } |
| zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; |
| if (zhp_orig->zfs_mntopts != NULL) { |
| zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, |
| zhp_orig->zfs_mntopts); |
| } |
| zhp->zfs_props_table = zhp_orig->zfs_props_table; |
| return (zhp); |
| } |
| |
| boolean_t |
| zfs_bookmark_exists(const char *path) |
| { |
| nvlist_t *bmarks; |
| nvlist_t *props; |
| char fsname[ZFS_MAX_DATASET_NAME_LEN]; |
| char *bmark_name; |
| char *pound; |
| int err; |
| boolean_t rv; |
| |
| |
| (void) strlcpy(fsname, path, sizeof (fsname)); |
| pound = strchr(fsname, '#'); |
| if (pound == NULL) |
| return (B_FALSE); |
| |
| *pound = '\0'; |
| bmark_name = pound + 1; |
| props = fnvlist_alloc(); |
| err = lzc_get_bookmarks(fsname, props, &bmarks); |
| nvlist_free(props); |
| if (err != 0) { |
| nvlist_free(bmarks); |
| return (B_FALSE); |
| } |
| |
| rv = nvlist_exists(bmarks, bmark_name); |
| nvlist_free(bmarks); |
| return (rv); |
| } |
| |
| zfs_handle_t * |
| make_bookmark_handle(zfs_handle_t *parent, const char *path, |
| nvlist_t *bmark_props) |
| { |
| zfs_handle_t *zhp = calloc(1, sizeof (zfs_handle_t)); |
| |
| if (zhp == NULL) |
| return (NULL); |
| |
| /* Fill in the name. */ |
| zhp->zfs_hdl = parent->zfs_hdl; |
| (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); |
| |
| /* Set the property lists. */ |
| if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { |
| free(zhp); |
| return (NULL); |
| } |
| |
| /* Set the types. */ |
| zhp->zfs_head_type = parent->zfs_head_type; |
| zhp->zfs_type = ZFS_TYPE_BOOKMARK; |
| |
| if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { |
| nvlist_free(zhp->zfs_props); |
| free(zhp); |
| return (NULL); |
| } |
| |
| return (zhp); |
| } |
| |
| struct zfs_open_bookmarks_cb_data { |
| const char *path; |
| zfs_handle_t *zhp; |
| }; |
| |
| static int |
| zfs_open_bookmarks_cb(zfs_handle_t *zhp, void *data) |
| { |
| struct zfs_open_bookmarks_cb_data *dp = data; |
| |
| /* |
| * Is it the one we are looking for? |
| */ |
| if (strcmp(dp->path, zfs_get_name(zhp)) == 0) { |
| /* |
| * We found it. Save it and let the caller know we are done. |
| */ |
| dp->zhp = zhp; |
| return (EEXIST); |
| } |
| |
| /* |
| * Not found. Close the handle and ask for another one. |
| */ |
| zfs_close(zhp); |
| return (0); |
| } |
| |
| /* |
| * Opens the given snapshot, bookmark, filesystem, or volume. The 'types' |
| * argument is a mask of acceptable types. The function will print an |
| * appropriate error message and return NULL if it can't be opened. |
| */ |
| zfs_handle_t * |
| zfs_open(libzfs_handle_t *hdl, const char *path, int types) |
| { |
| zfs_handle_t *zhp; |
| char errbuf[1024]; |
| char *bookp; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); |
| |
| /* |
| * Validate the name before we even try to open it. |
| */ |
| if (!zfs_validate_name(hdl, path, types, B_FALSE)) { |
| (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); |
| return (NULL); |
| } |
| |
| /* |
| * Bookmarks needs to be handled separately. |
| */ |
| bookp = strchr(path, '#'); |
| if (bookp == NULL) { |
| /* |
| * Try to get stats for the dataset, which will tell us if it |
| * exists. |
| */ |
| errno = 0; |
| if ((zhp = make_dataset_handle(hdl, path)) == NULL) { |
| (void) zfs_standard_error(hdl, errno, errbuf); |
| return (NULL); |
| } |
| } else { |
| char dsname[ZFS_MAX_DATASET_NAME_LEN]; |
| zfs_handle_t *pzhp; |
| struct zfs_open_bookmarks_cb_data cb_data = {path, NULL}; |
| |
| /* |
| * We need to cut out '#' and everything after '#' |
| * to get the parent dataset name only. |
| */ |
| assert(bookp - path < sizeof (dsname)); |
| (void) strncpy(dsname, path, bookp - path); |
| dsname[bookp - path] = '\0'; |
| |
| /* |
| * Create handle for the parent dataset. |
| */ |
| errno = 0; |
| if ((pzhp = make_dataset_handle(hdl, dsname)) == NULL) { |
| (void) zfs_standard_error(hdl, errno, errbuf); |
| return (NULL); |
| } |
| |
| /* |
| * Iterate bookmarks to find the right one. |
| */ |
| errno = 0; |
| if ((zfs_iter_bookmarks(pzhp, zfs_open_bookmarks_cb, |
| &cb_data) == 0) && (cb_data.zhp == NULL)) { |
| (void) zfs_error(hdl, EZFS_NOENT, errbuf); |
| zfs_close(pzhp); |
| return (NULL); |
| } |
| if (cb_data.zhp == NULL) { |
| (void) zfs_standard_error(hdl, errno, errbuf); |
| zfs_close(pzhp); |
| return (NULL); |
| } |
| zhp = cb_data.zhp; |
| |
| /* |
| * Cleanup. |
| */ |
| zfs_close(pzhp); |
| } |
| |
| 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 |
| 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); |
| nvlist_free(zhp->zfs_recvd_props); |
| free(zhp); |
| } |
| |
| typedef struct mnttab_node { |
| struct mnttab mtn_mt; |
| avl_node_t mtn_node; |
| } mnttab_node_t; |
| |
| static int |
| libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) |
| { |
| const mnttab_node_t *mtn1 = (const mnttab_node_t *)arg1; |
| const mnttab_node_t *mtn2 = (const mnttab_node_t *)arg2; |
| int rv; |
| |
| rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); |
| |
| return (AVL_ISIGN(rv)); |
| } |
| |
| void |
| libzfs_mnttab_init(libzfs_handle_t *hdl) |
| { |
| pthread_mutex_init(&hdl->libzfs_mnttab_cache_lock, NULL); |
| assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); |
| avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, |
| sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); |
| } |
| |
| int |
| libzfs_mnttab_update(libzfs_handle_t *hdl) |
| { |
| struct mnttab entry; |
| |
| /* Reopen MNTTAB to prevent reading stale data from open file */ |
| if (freopen(MNTTAB, "r", hdl->libzfs_mnttab) == NULL) |
| return (ENOENT); |
| |
| while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { |
| mnttab_node_t *mtn; |
| avl_index_t where; |
| |
| if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) |
| continue; |
| |
| mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); |
| mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); |
| mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); |
| mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); |
| mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); |
| |
| /* Exclude duplicate mounts */ |
| if (avl_find(&hdl->libzfs_mnttab_cache, mtn, &where) != NULL) { |
| free(mtn->mtn_mt.mnt_special); |
| free(mtn->mtn_mt.mnt_mountp); |
| free(mtn->mtn_mt.mnt_fstype); |
| free(mtn->mtn_mt.mnt_mntopts); |
| free(mtn); |
| continue; |
| } |
| |
| avl_add(&hdl->libzfs_mnttab_cache, mtn); |
| } |
| |
| return (0); |
| } |
| |
| void |
| libzfs_mnttab_fini(libzfs_handle_t *hdl) |
| { |
| void *cookie = NULL; |
| mnttab_node_t *mtn; |
| |
| while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) |
| != NULL) { |
| free(mtn->mtn_mt.mnt_special); |
| free(mtn->mtn_mt.mnt_mountp); |
| free(mtn->mtn_mt.mnt_fstype); |
| free(mtn->mtn_mt.mnt_mntopts); |
| free(mtn); |
| } |
| avl_destroy(&hdl->libzfs_mnttab_cache); |
| (void) pthread_mutex_destroy(&hdl->libzfs_mnttab_cache_lock); |
| } |
| |
| void |
| libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) |
| { |
| hdl->libzfs_mnttab_enable = enable; |
| } |
| |
| int |
| libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, |
| struct mnttab *entry) |
| { |
| mnttab_node_t find; |
| mnttab_node_t *mtn; |
| int ret = ENOENT; |
| |
| if (!hdl->libzfs_mnttab_enable) { |
| struct mnttab srch = { 0 }; |
| |
| if (avl_numnodes(&hdl->libzfs_mnttab_cache)) |
| libzfs_mnttab_fini(hdl); |
| |
| /* Reopen MNTTAB to prevent reading stale data from open file */ |
| if (freopen(MNTTAB, "r", hdl->libzfs_mnttab) == NULL) |
| return (ENOENT); |
| |
| srch.mnt_special = (char *)fsname; |
| srch.mnt_fstype = MNTTYPE_ZFS; |
| if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) |
| return (0); |
| else |
| return (ENOENT); |
| } |
| |
| pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); |
| if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) { |
| int error; |
| |
| if ((error = libzfs_mnttab_update(hdl)) != 0) { |
| pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); |
| return (error); |
| } |
| } |
| |
| find.mtn_mt.mnt_special = (char *)fsname; |
| mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); |
| if (mtn) { |
| *entry = mtn->mtn_mt; |
| ret = 0; |
| } |
| pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); |
| return (ret); |
| } |
| |
| void |
| libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, |
| const char *mountp, const char *mntopts) |
| { |
| mnttab_node_t *mtn; |
| |
| pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); |
| if (avl_numnodes(&hdl->libzfs_mnttab_cache) != 0) { |
| mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); |
| mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); |
| mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); |
| mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); |
| mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); |
| /* |
| * Another thread may have already added this entry |
| * via libzfs_mnttab_update. If so we should skip it. |
| */ |
| if (avl_find(&hdl->libzfs_mnttab_cache, mtn, NULL) != NULL) |
| free(mtn); |
| else |
| avl_add(&hdl->libzfs_mnttab_cache, mtn); |
| } |
| pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); |
| } |
| |
| void |
| libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) |
| { |
| mnttab_node_t find; |
| mnttab_node_t *ret; |
| |
| pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); |
| find.mtn_mt.mnt_special = (char *)fsname; |
| if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) |
| != NULL) { |
| avl_remove(&hdl->libzfs_mnttab_cache, ret); |
| free(ret->mtn_mt.mnt_special); |
| free(ret->mtn_mt.mnt_mountp); |
| free(ret->mtn_mt.mnt_fstype); |
| free(ret->mtn_mt.mnt_mntopts); |
| free(ret); |
| } |
| pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); |
| } |
| |
| int |
| zfs_spa_version(zfs_handle_t *zhp, int *spa_version) |
| { |
| zpool_handle_t *zpool_handle = zhp->zpool_hdl; |
| |
| if (zpool_handle == NULL) |
| return (-1); |
| |
| *spa_version = zpool_get_prop_int(zpool_handle, |
| ZPOOL_PROP_VERSION, NULL); |
| return (0); |
| } |
| |
| /* |
| * The choice of reservation property depends on the SPA version. |
| */ |
| static int |
| zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) |
| { |
| int spa_version; |
| |
| if (zfs_spa_version(zhp, &spa_version) < 0) |
| return (-1); |
| |
| if (spa_version >= SPA_VERSION_REFRESERVATION) |
| *resv_prop = ZFS_PROP_REFRESERVATION; |
| else |
| *resv_prop = ZFS_PROP_RESERVATION; |
| |
| return (0); |
| } |
| |
| /* |
| * 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_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, |
| uint64_t zoned, zfs_handle_t *zhp, zpool_handle_t *zpool_hdl, |
| boolean_t key_params_ok, const char *errbuf) |
| { |
| nvpair_t *elem; |
| uint64_t intval; |
| char *strval; |
| zfs_prop_t prop; |
| nvlist_t *ret; |
| int chosen_normal = -1; |
| int chosen_utf = -1; |
| |
| if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { |
| (void) no_memory(hdl); |
| return (NULL); |
| } |
| |
| /* |
| * Make sure this property is valid and applies to this type. |
| */ |
| |
| elem = NULL; |
| while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { |
| const char *propname = nvpair_name(elem); |
| |
| prop = zfs_name_to_prop(propname); |
| if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { |
| /* |
| * 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; |
| } |
| |
| /* |
| * Currently, only user properties can be modified on |
| * snapshots. |
| */ |
| if (type == ZFS_TYPE_SNAPSHOT) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "this property can not be modified for snapshots")); |
| (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); |
| goto error; |
| } |
| |
| if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { |
| zfs_userquota_prop_t uqtype; |
| char *newpropname = NULL; |
| char domain[128]; |
| uint64_t rid; |
| uint64_t valary[3]; |
| int rc; |
| |
| if (userquota_propname_decode(propname, zoned, |
| &uqtype, domain, sizeof (domain), &rid) != 0) { |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, |
| "'%s' has an invalid user/group name"), |
| propname); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| |
| if (uqtype != ZFS_PROP_USERQUOTA && |
| uqtype != ZFS_PROP_GROUPQUOTA && |
| uqtype != ZFS_PROP_USEROBJQUOTA && |
| uqtype != ZFS_PROP_GROUPOBJQUOTA && |
| uqtype != ZFS_PROP_PROJECTQUOTA && |
| uqtype != ZFS_PROP_PROJECTOBJQUOTA) { |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, "'%s' is readonly"), |
| propname); |
| (void) zfs_error(hdl, EZFS_PROPREADONLY, |
| errbuf); |
| goto error; |
| } |
| |
| if (nvpair_type(elem) == DATA_TYPE_STRING) { |
| (void) nvpair_value_string(elem, &strval); |
| if (strcmp(strval, "none") == 0) { |
| intval = 0; |
| } else if (zfs_nicestrtonum(hdl, |
| strval, &intval) != 0) { |
| (void) zfs_error(hdl, |
| EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| } else if (nvpair_type(elem) == |
| DATA_TYPE_UINT64) { |
| (void) nvpair_value_uint64(elem, &intval); |
| if (intval == 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "use 'none' to disable " |
| "{user|group|project}quota")); |
| goto error; |
| } |
| } else { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' must be a number"), propname); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| |
| /* |
| * Encode the prop name as |
| * userquota@<hex-rid>-domain, to make it easy |
| * for the kernel to decode. |
| */ |
| rc = asprintf(&newpropname, "%s%llx-%s", |
| zfs_userquota_prop_prefixes[uqtype], |
| (longlong_t)rid, domain); |
| if (rc == -1 || newpropname == NULL) { |
| (void) no_memory(hdl); |
| goto error; |
| } |
| |
| valary[0] = uqtype; |
| valary[1] = rid; |
| valary[2] = intval; |
| if (nvlist_add_uint64_array(ret, newpropname, |
| valary, 3) != 0) { |
| free(newpropname); |
| (void) no_memory(hdl); |
| goto error; |
| } |
| free(newpropname); |
| continue; |
| } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' is readonly"), |
| propname); |
| (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); |
| goto error; |
| } |
| |
| if (prop == ZPROP_INVAL) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid property '%s'"), propname); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| |
| if (!zfs_prop_valid_for_type(prop, type, B_FALSE)) { |
| 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) && |
| !(zfs_prop_setonce(prop) && zhp == NULL) && |
| !(zfs_prop_encryption_key_param(prop) && key_params_ok)) { |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, "'%s' is readonly"), |
| propname); |
| (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); |
| goto error; |
| } |
| |
| if (zprop_parse_value(hdl, elem, prop, type, ret, |
| &strval, &intval, errbuf) != 0) |
| goto error; |
| |
| /* |
| * Perform some additional checks for specific properties. |
| */ |
| switch (prop) { |
| case ZFS_PROP_VERSION: |
| { |
| int version; |
| |
| if (zhp == NULL) |
| break; |
| version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); |
| if (intval < version) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "Can not downgrade; already at version %u"), |
| version); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| break; |
| } |
| |
| case ZFS_PROP_VOLBLOCKSIZE: |
| case ZFS_PROP_RECORDSIZE: |
| { |
| int maxbs = SPA_MAXBLOCKSIZE; |
| char buf[64]; |
| |
| if (zpool_hdl != NULL) { |
| maxbs = zpool_get_prop_int(zpool_hdl, |
| ZPOOL_PROP_MAXBLOCKSIZE, NULL); |
| } |
| /* |
| * The value must be a power of two between |
| * SPA_MINBLOCKSIZE and maxbs. |
| */ |
| if (intval < SPA_MINBLOCKSIZE || |
| intval > maxbs || !ISP2(intval)) { |
| zfs_nicebytes(maxbs, buf, sizeof (buf)); |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' must be power of 2 from 512B " |
| "to %s"), propname, buf); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| break; |
| } |
| |
| case ZFS_PROP_SPECIAL_SMALL_BLOCKS: |
| { |
| int maxbs = SPA_OLD_MAXBLOCKSIZE; |
| char buf[64]; |
| |
| if (zpool_hdl != NULL) { |
| char state[64] = ""; |
| |
| maxbs = zpool_get_prop_int(zpool_hdl, |
| ZPOOL_PROP_MAXBLOCKSIZE, NULL); |
| |
| /* |
| * Issue a warning but do not fail so that |
| * tests for settable properties succeed. |
| */ |
| if (zpool_prop_get_feature(zpool_hdl, |
| "feature@allocation_classes", state, |
| sizeof (state)) != 0 || |
| strcmp(state, ZFS_FEATURE_ACTIVE) != 0) { |
| (void) fprintf(stderr, gettext( |
| "%s: property requires a special " |
| "device in the pool\n"), propname); |
| } |
| } |
| if (intval != 0 && |
| (intval < SPA_MINBLOCKSIZE || |
| intval > maxbs || !ISP2(intval))) { |
| zfs_nicebytes(maxbs, buf, sizeof (buf)); |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid '%s=%d' property: must be zero or " |
| "a power of 2 from 512B to %s"), propname, |
| intval, buf); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| break; |
| } |
| |
| case ZFS_PROP_MLSLABEL: |
| { |
| #ifdef HAVE_MLSLABEL |
| /* |
| * Verify the mlslabel string and convert to |
| * internal hex label string. |
| */ |
| |
| m_label_t *new_sl; |
| char *hex = NULL; /* internal label string */ |
| |
| /* Default value is already OK. */ |
| if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) |
| break; |
| |
| /* Verify the label can be converted to binary form */ |
| if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || |
| (str_to_label(strval, &new_sl, MAC_LABEL, |
| L_NO_CORRECTION, NULL) == -1)) { |
| goto badlabel; |
| } |
| |
| /* Now translate to hex internal label string */ |
| if (label_to_str(new_sl, &hex, M_INTERNAL, |
| DEF_NAMES) != 0) { |
| if (hex) |
| free(hex); |
| goto badlabel; |
| } |
| m_label_free(new_sl); |
| |
| /* If string is already in internal form, we're done. */ |
| if (strcmp(strval, hex) == 0) { |
| free(hex); |
| break; |
| } |
| |
| /* Replace the label string with the internal form. */ |
| (void) nvlist_remove(ret, zfs_prop_to_name(prop), |
| DATA_TYPE_STRING); |
| verify(nvlist_add_string(ret, zfs_prop_to_name(prop), |
| hex) == 0); |
| free(hex); |
| |
| break; |
| |
| badlabel: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid mlslabel '%s'"), strval); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| m_label_free(new_sl); /* OK if null */ |
| goto error; |
| #else |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "mlslabels are unsupported")); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| #endif /* HAVE_MLSLABEL */ |
| } |
| |
| case ZFS_PROP_MOUNTPOINT: |
| { |
| namecheck_err_t why; |
| |
| if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || |
| strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) |
| break; |
| |
| if (mountpoint_namecheck(strval, &why)) { |
| switch (why) { |
| case NAME_ERR_LEADING_SLASH: |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, |
| "'%s' must be an absolute path, " |
| "'none', or 'legacy'"), propname); |
| break; |
| case NAME_ERR_TOOLONG: |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, |
| "component of '%s' is too long"), |
| propname); |
| break; |
| |
| default: |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, |
| "(%d) not defined"), |
| why); |
| break; |
| } |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| } |
| |
| /*FALLTHRU*/ |
| |
| case ZFS_PROP_SHARESMB: |
| case ZFS_PROP_SHARENFS: |
| /* |
| * For the mountpoint and sharenfs or sharesmb |
| * 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) |
| * sharesmb (no) sharesmb (no) |
| * |
| * zoned=off mountpoint (yes) N/A |
| * sharenfs (yes) |
| * sharesmb (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 || |
| prop == ZFS_PROP_SHARESMB) { |
| 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 global 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; |
| } |
| |
| /* |
| * At this point, it is legitimate to set the |
| * property. Now we want to make sure that the |
| * property value is valid if it is sharenfs. |
| */ |
| if ((prop == ZFS_PROP_SHARENFS || |
| prop == ZFS_PROP_SHARESMB) && |
| strcmp(strval, "on") != 0 && |
| strcmp(strval, "off") != 0) { |
| zfs_share_proto_t proto; |
| |
| if (prop == ZFS_PROP_SHARESMB) |
| proto = PROTO_SMB; |
| else |
| proto = PROTO_NFS; |
| |
| /* |
| * Must be an valid sharing protocol |
| * option string so init the libshare |
| * in order to enable the parser and |
| * then parse the options. We use the |
| * control API since we don't care about |
| * the current configuration and don't |
| * want the overhead of loading it |
| * until we actually do something. |
| */ |
| |
| if (zfs_init_libshare(hdl, |
| SA_INIT_CONTROL_API) != SA_OK) { |
| /* |
| * An error occurred so we can't do |
| * anything |
| */ |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' cannot be set: problem " |
| "in share initialization"), |
| propname); |
| (void) zfs_error(hdl, EZFS_BADPROP, |
| errbuf); |
| goto error; |
| } |
| |
| if (zfs_parse_options(strval, proto) != SA_OK) { |
| /* |
| * There was an error in parsing so |
| * deal with it by issuing an error |
| * message and leaving after |
| * uninitializing the libshare |
| * interface. |
| */ |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' cannot be set to invalid " |
| "options"), propname); |
| (void) zfs_error(hdl, EZFS_BADPROP, |
| errbuf); |
| zfs_uninit_libshare(hdl); |
| goto error; |
| } |
| zfs_uninit_libshare(hdl); |
| } |
| |
| break; |
| |
| case ZFS_PROP_KEYLOCATION: |
| if (!zfs_prop_valid_keylocation(strval, B_FALSE)) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid keylocation")); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| |
| if (zhp != NULL) { |
| uint64_t crypt = |
| zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION); |
| |
| if (crypt == ZIO_CRYPT_OFF && |
| strcmp(strval, "none") != 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "keylocation must be 'none' " |
| "for unencrypted datasets")); |
| (void) zfs_error(hdl, EZFS_BADPROP, |
| errbuf); |
| goto error; |
| } else if (crypt != ZIO_CRYPT_OFF && |
| strcmp(strval, "none") == 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "keylocation must not be 'none' " |
| "for encrypted datasets")); |
| (void) zfs_error(hdl, EZFS_BADPROP, |
| errbuf); |
| goto error; |
| } |
| } |
| break; |
| |
| case ZFS_PROP_PBKDF2_ITERS: |
| if (intval < MIN_PBKDF2_ITERATIONS) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "minimum pbkdf2 iterations is %u"), |
| MIN_PBKDF2_ITERATIONS); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| break; |
| |
| case ZFS_PROP_UTF8ONLY: |
| chosen_utf = (int)intval; |
| break; |
| |
| case ZFS_PROP_NORMALIZE: |
| chosen_normal = (int)intval; |
| break; |
| |
| default: |
| break; |
| } |
| |
| /* |
| * For changes to existing volumes, we have some additional |
| * checks to enforce. |
| */ |
| if (type == ZFS_TYPE_VOLUME && zhp != NULL) { |
| uint64_t blocksize = zfs_prop_get_int(zhp, |
| ZFS_PROP_VOLBLOCKSIZE); |
| char buf[64]; |
| |
| switch (prop) { |
| case ZFS_PROP_VOLSIZE: |
| if (intval % blocksize != 0) { |
| zfs_nicebytes(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; |
| |
| default: |
| break; |
| } |
| } |
| |
| /* check encryption properties */ |
| if (zhp != NULL) { |
| int64_t crypt = zfs_prop_get_int(zhp, |
| ZFS_PROP_ENCRYPTION); |
| |
| switch (prop) { |
| case ZFS_PROP_COPIES: |
| if (crypt != ZIO_CRYPT_OFF && intval > 2) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "encrypted datasets cannot have " |
| "3 copies")); |
| (void) zfs_error(hdl, EZFS_BADPROP, |
| errbuf); |
| goto error; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| /* |
| * If normalization was chosen, but no UTF8 choice was made, |
| * enforce rejection of non-UTF8 names. |
| * |
| * If normalization was chosen, but rejecting non-UTF8 names |
| * was explicitly not chosen, it is an error. |
| */ |
| if (chosen_normal > 0 && chosen_utf < 0) { |
| if (nvlist_add_uint64(ret, |
| zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { |
| (void) no_memory(hdl); |
| goto error; |
| } |
| } else if (chosen_normal > 0 && chosen_utf == 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "'%s' must be set 'on' if normalization chosen"), |
| zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| goto error; |
| } |
| return (ret); |
| |
| error: |
| nvlist_free(ret); |
| return (NULL); |
| } |
| |
| int |
| zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) |
| { |
| uint64_t old_volsize; |
| uint64_t new_volsize; |
| uint64_t old_reservation; |
| uint64_t new_reservation; |
| zfs_prop_t resv_prop; |
| nvlist_t *props; |
| zpool_handle_t *zph = zpool_handle(zhp); |
| |
| /* |
| * If this is an existing volume, and someone is setting the volsize, |
| * make sure that it matches the reservation, or add it if necessary. |
| */ |
| old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
| if (zfs_which_resv_prop(zhp, &resv_prop) < 0) |
| return (-1); |
| old_reservation = zfs_prop_get_int(zhp, resv_prop); |
| |
| props = fnvlist_alloc(); |
| fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), |
| zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); |
| |
| if ((zvol_volsize_to_reservation(zph, old_volsize, props) != |
| old_reservation) || nvlist_exists(nvl, |
| zfs_prop_to_name(resv_prop))) { |
| fnvlist_free(props); |
| return (0); |
| } |
| if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
| &new_volsize) != 0) { |
| fnvlist_free(props); |
| return (-1); |
| } |
| new_reservation = zvol_volsize_to_reservation(zph, new_volsize, props); |
| fnvlist_free(props); |
| |
| if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), |
| new_reservation) != 0) { |
| (void) no_memory(zhp->zfs_hdl); |
| return (-1); |
| } |
| return (1); |
| } |
| |
| /* |
| * Helper for 'zfs {set|clone} refreservation=auto'. Must be called after |
| * zfs_valid_proplist(), as it is what sets the UINT64_MAX sentinel value. |
| * Return codes must match zfs_add_synthetic_resv(). |
| */ |
| static int |
| zfs_fix_auto_resv(zfs_handle_t *zhp, nvlist_t *nvl) |
| { |
| uint64_t volsize; |
| uint64_t resvsize; |
| zfs_prop_t prop; |
| nvlist_t *props; |
| |
| if (!ZFS_IS_VOLUME(zhp)) { |
| return (0); |
| } |
| |
| if (zfs_which_resv_prop(zhp, &prop) != 0) { |
| return (-1); |
| } |
| |
| if (prop != ZFS_PROP_REFRESERVATION) { |
| return (0); |
| } |
| |
| if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(prop), &resvsize) != 0) { |
| /* No value being set, so it can't be "auto" */ |
| return (0); |
| } |
| if (resvsize != UINT64_MAX) { |
| /* Being set to a value other than "auto" */ |
| return (0); |
| } |
| |
| props = fnvlist_alloc(); |
| |
| fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), |
| zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); |
| |
| if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
| &volsize) != 0) { |
| volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
| } |
| |
| resvsize = zvol_volsize_to_reservation(zpool_handle(zhp), volsize, |
| props); |
| fnvlist_free(props); |
| |
| (void) nvlist_remove_all(nvl, zfs_prop_to_name(prop)); |
| if (nvlist_add_uint64(nvl, zfs_prop_to_name(prop), resvsize) != 0) { |
| (void) no_memory(zhp->zfs_hdl); |
| return (-1); |
| } |
| return (1); |
| } |
| |
| void |
| zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, |
| char *errbuf) |
| { |
| switch (err) { |
| |
| 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: |
| case ZFS_PROP_REFQUOTA: |
| 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: |
| case ZFS_PROP_REFRESERVATION: |
| 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, err, errbuf); |
| break; |
| } |
| break; |
| |
| case EBUSY: |
| (void) zfs_standard_error(hdl, EBUSY, errbuf); |
| break; |
| |
| case EROFS: |
| (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); |
| break; |
| |
| case E2BIG: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "property value too long")); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| break; |
| |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool and or dataset must be upgraded to set this " |
| "property or value")); |
| (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| |
| case ERANGE: |
| if (prop == ZFS_PROP_COMPRESSION || |
| prop == ZFS_PROP_DNODESIZE || |
| prop == ZFS_PROP_RECORDSIZE) { |
| (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "property setting is not allowed on " |
| "bootable datasets")); |
| (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); |
| } else if (prop == ZFS_PROP_CHECKSUM || |
| prop == ZFS_PROP_DEDUP) { |
| (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "property setting is not allowed on " |
| "root pools")); |
| (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); |
| } else { |
| (void) zfs_standard_error(hdl, err, errbuf); |
| } |
| break; |
| |
| case EINVAL: |
| if (prop == ZPROP_INVAL) { |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| } else { |
| (void) zfs_standard_error(hdl, err, errbuf); |
| } |
| break; |
| |
| case EACCES: |
| if (prop == ZFS_PROP_KEYLOCATION) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "keylocation may only be set on encryption roots")); |
| (void) zfs_error(hdl, EZFS_BADPROP, errbuf); |
| } else { |
| (void) zfs_standard_error(hdl, err, 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, err, errbuf); |
| } |
| } |
| |
| static boolean_t |
| zfs_is_namespace_prop(zfs_prop_t prop) |
| { |
| switch (prop) { |
| |
| case ZFS_PROP_ATIME: |
| case ZFS_PROP_RELATIME: |
| case ZFS_PROP_DEVICES: |
| case ZFS_PROP_EXEC: |
| case ZFS_PROP_SETUID: |
| case ZFS_PROP_READONLY: |
| case ZFS_PROP_XATTR: |
| case ZFS_PROP_NBMAND: |
| return (B_TRUE); |
| |
| default: |
| return (B_FALSE); |
| } |
| } |
| |
| /* |
| * 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) |
| { |
| int ret = -1; |
| char errbuf[1024]; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| nvlist_t *nvl = NULL; |
| |
| (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; |
| } |
| |
| ret = zfs_prop_set_list(zhp, nvl); |
| |
| error: |
| nvlist_free(nvl); |
| return (ret); |
| } |
| |
| |
| |
| /* |
| * Given an nvlist of property names and values, set the properties for the |
| * given dataset. |
| */ |
| int |
| zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| int ret = -1; |
| prop_changelist_t **cls = NULL; |
| int cl_idx; |
| char errbuf[1024]; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| nvlist_t *nvl; |
| int nvl_len = 0; |
| int added_resv = 0; |
| zfs_prop_t prop = 0; |
| nvpair_t *elem; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), |
| zhp->zfs_name); |
| |
| if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props, |
| zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, zhp->zpool_hdl, |
| B_FALSE, errbuf)) == NULL) |
| goto error; |
| |
| /* |
| * We have to check for any extra properties which need to be added |
| * before computing the length of the nvlist. |
| */ |
| for (elem = nvlist_next_nvpair(nvl, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(nvl, elem)) { |
| if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE && |
| (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) { |
| goto error; |
| } |
| } |
| |
| if (added_resv != 1 && |
| (added_resv = zfs_fix_auto_resv(zhp, nvl)) == -1) { |
| goto error; |
| } |
| |
| /* |
| * Check how many properties we're setting and allocate an array to |
| * store changelist pointers for postfix(). |
| */ |
| for (elem = nvlist_next_nvpair(nvl, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(nvl, elem)) |
| nvl_len++; |
| if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL) |
| goto error; |
| |
| cl_idx = 0; |
| for (elem = nvlist_next_nvpair(nvl, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(nvl, elem)) { |
| |
| prop = zfs_name_to_prop(nvpair_name(elem)); |
| |
| assert(cl_idx < nvl_len); |
| /* |
| * We don't want to unmount & remount the dataset when changing |
| * its canmount property to 'on' or 'noauto'. We only use |
| * the changelist logic to unmount when setting canmount=off. |
| */ |
| if (prop != ZFS_PROP_CANMOUNT || |
| (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_OFF && |
| zfs_is_mounted(zhp, NULL))) { |
| cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); |
| if (cls[cl_idx] == NULL) |
| goto error; |
| } |
| |
| if (prop == ZFS_PROP_MOUNTPOINT && |
| changelist_haszonedchild(cls[cl_idx])) { |
| 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 (cls[cl_idx] != NULL && |
| (ret = changelist_prefix(cls[cl_idx])) != 0) |
| goto error; |
| |
| cl_idx++; |
| } |
| assert(cl_idx == nvl_len); |
| |
| /* |
| * Execute the corresponding ioctl() to set this list of properties. |
| */ |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 || |
| (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0) |
| goto error; |
| |
| ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); |
| |
| if (ret != 0) { |
| if (zc.zc_nvlist_dst_filled == B_FALSE) { |
| (void) zfs_standard_error(hdl, errno, errbuf); |
| goto error; |
| } |
| |
| /* Get the list of unset properties back and report them. */ |
| nvlist_t *errorprops = NULL; |
| if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0) |
| goto error; |
| for (nvpair_t *elem = nvlist_next_nvpair(errorprops, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(errorprops, elem)) { |
| prop = zfs_name_to_prop(nvpair_name(elem)); |
| zfs_setprop_error(hdl, prop, errno, errbuf); |
| } |
| nvlist_free(errorprops); |
| |
| if (added_resv && errno == ENOSPC) { |
| /* clean up the volsize property we tried to set */ |
| uint64_t old_volsize = zfs_prop_get_int(zhp, |
| ZFS_PROP_VOLSIZE); |
| nvlist_free(nvl); |
| nvl = NULL; |
| zcmd_free_nvlists(&zc); |
| |
| if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) |
| goto error; |
| if (nvlist_add_uint64(nvl, |
| zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
| old_volsize) != 0) |
| goto error; |
| if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) |
| goto error; |
| (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); |
| } |
| } else { |
| for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { |
| if (cls[cl_idx] != NULL) { |
| int clp_err = changelist_postfix(cls[cl_idx]); |
| if (clp_err != 0) |
| ret = clp_err; |
| } |
| } |
| |
| if (ret == 0) { |
| /* |
| * Refresh the statistics so the new property |
| * value is reflected. |
| */ |
| (void) get_stats(zhp); |
| |
| /* |
| * Remount the filesystem to propagate the change |
| * if one of the options handled by the generic |
| * Linux namespace layer has been modified. |
| */ |
| if (zfs_is_namespace_prop(prop) && |
| zfs_is_mounted(zhp, NULL)) |
| ret = zfs_mount(zhp, MNTOPT_REMOUNT, 0); |
| } |
| } |
| |
| error: |
| nvlist_free(nvl); |
| zcmd_free_nvlists(&zc); |
| if (cls != NULL) { |
| for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { |
| if (cls[cl_idx] != NULL) |
| changelist_free(cls[cl_idx]); |
| } |
| free(cls); |
| } |
| return (ret); |
| } |
| |
| /* |
| * Given a property, inherit the value from the parent dataset, or if received |
| * is TRUE, revert to the received value, if any. |
| */ |
| int |
| zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) |
| { |
| 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); |
| |
| zc.zc_cookie = received; |
| if ((prop = zfs_name_to_prop(propname)) == ZPROP_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 (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_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) && !received) |
| 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, B_FALSE)) |
| return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); |
| |
| /* |
| * Normalize the name, to get rid of shorthand abbreviations. |
| */ |
| 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, 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 = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_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); |
| |
| /* |
| * Remount the filesystem to propagate the change |
| * if one of the options handled by the generic |
| * Linux namespace layer has been modified. |
| */ |
| if (zfs_is_namespace_prop(prop) && |
| zfs_is_mounted(zhp, NULL)) |
| ret = zfs_mount(zhp, MNTOPT_REMOUNT, 0); |
| } |
| |
| error: |
| changelist_free(cl); |
| return (ret); |
| } |
| |
| /* |
| * True DSL properties are stored in an nvlist. The following two functions |
| * extract them appropriately. |
| */ |
| 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, ZPROP_VALUE, &value) == 0); |
| (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); |
| } else { |
| verify(!zhp->zfs_props_table || |
| zhp->zfs_props_table[prop] == B_TRUE); |
| value = zfs_prop_default_numeric(prop); |
| *source = ""; |
| } |
| |
| return (value); |
| } |
| |
| static const char * |
| getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) |
| { |
| nvlist_t *nv; |
| const char *value; |
| |
| *source = NULL; |
| if (nvlist_lookup_nvlist(zhp->zfs_props, |
| zfs_prop_to_name(prop), &nv) == 0) { |
| value = fnvlist_lookup_string(nv, ZPROP_VALUE); |
| (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); |
| } else { |
| verify(!zhp->zfs_props_table || |
| zhp->zfs_props_table[prop] == B_TRUE); |
| value = zfs_prop_default_string(prop); |
| *source = ""; |
| } |
| |
| return (value); |
| } |
| |
| static boolean_t |
| zfs_is_recvd_props_mode(zfs_handle_t *zhp) |
| { |
| return (zhp->zfs_props == zhp->zfs_recvd_props); |
| } |
| |
| static void |
| zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) |
| { |
| *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; |
| zhp->zfs_props = zhp->zfs_recvd_props; |
| } |
| |
| static void |
| zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) |
| { |
| zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; |
| *cookie = 0; |
| } |
| |
| /* |
| * 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 /proc/self/mounts 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, zprop_source_t *src, |
| char **source, uint64_t *val) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| nvlist_t *zplprops = NULL; |
| struct mnttab mnt; |
| char *mntopt_on = NULL; |
| char *mntopt_off = NULL; |
| boolean_t received = zfs_is_recvd_props_mode(zhp); |
| |
| *source = NULL; |
| |
| /* |
| * If the property is being fetched for a snapshot, check whether |
| * the property is valid for the snapshot's head dataset type. |
| */ |
| if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT && |
| !zfs_prop_valid_for_type(prop, zhp->zfs_head_type, B_TRUE)) { |
| *val = zfs_prop_default_numeric(prop); |
| return (-1); |
| } |
| |
| switch (prop) { |
| case ZFS_PROP_ATIME: |
| mntopt_on = MNTOPT_ATIME; |
| mntopt_off = MNTOPT_NOATIME; |
| break; |
| |
| case ZFS_PROP_RELATIME: |
| mntopt_on = MNTOPT_RELATIME; |
| mntopt_off = MNTOPT_NORELATIME; |
| 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; |
| |
| case ZFS_PROP_NBMAND: |
| mntopt_on = MNTOPT_NBMAND; |
| mntopt_off = MNTOPT_NONBMAND; |
| break; |
| |
| default: |
| break; |
| } |
| |
| /* |
| * Because looking up the mount options is potentially expensive |
| * (iterating over all of /proc/self/mounts), 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)) { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| struct mnttab entry; |
| |
| if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { |
| zhp->zfs_mntopts = zfs_strdup(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_RELATIME: |
| case ZFS_PROP_DEVICES: |
| case ZFS_PROP_EXEC: |
| case ZFS_PROP_READONLY: |
| case ZFS_PROP_SETUID: |
| case ZFS_PROP_XATTR: |
| case ZFS_PROP_NBMAND: |
| *val = getprop_uint64(zhp, prop, source); |
| |
| if (received) |
| break; |
| |
| if (hasmntopt(&mnt, mntopt_on) && !*val) { |
| *val = B_TRUE; |
| if (src) |
| *src = ZPROP_SRC_TEMPORARY; |
| } else if (hasmntopt(&mnt, mntopt_off) && *val) { |
| *val = B_FALSE; |
| if (src) |
| *src = ZPROP_SRC_TEMPORARY; |
| } |
| break; |
| |
| case ZFS_PROP_CANMOUNT: |
| case ZFS_PROP_VOLSIZE: |
| case ZFS_PROP_QUOTA: |
| case ZFS_PROP_REFQUOTA: |
| case ZFS_PROP_RESERVATION: |
| case ZFS_PROP_REFRESERVATION: |
| case ZFS_PROP_FILESYSTEM_LIMIT: |
| case ZFS_PROP_SNAPSHOT_LIMIT: |
| case ZFS_PROP_FILESYSTEM_COUNT: |
| case ZFS_PROP_SNAPSHOT_COUNT: |
| *val = getprop_uint64(zhp, prop, source); |
| |
| if (*source == NULL) { |
| /* not default, must be local */ |
| *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; |
| |
| case ZFS_PROP_VERSION: |
| case ZFS_PROP_NORMALIZE: |
| case ZFS_PROP_UTF8ONLY: |
| case ZFS_PROP_CASE: |
| if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
| return (-1); |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { |
| zcmd_free_nvlists(&zc); |
| if (prop == ZFS_PROP_VERSION && |
| zhp->zfs_type == ZFS_TYPE_VOLUME) |
| *val = zfs_prop_default_numeric(prop); |
| return (-1); |
| } |
| if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || |
| nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), |
| val) != 0) { |
| zcmd_free_nvlists(&zc); |
| return (-1); |
| } |
| nvlist_free(zplprops); |
| zcmd_free_nvlists(&zc); |
| break; |
| |
| case ZFS_PROP_INCONSISTENT: |
| *val = zhp->zfs_dmustats.dds_inconsistent; |
| break; |
| |
| default: |
| switch (zfs_prop_get_type(prop)) { |
| case PROP_TYPE_NUMBER: |
| case PROP_TYPE_INDEX: |
| *val = getprop_uint64(zhp, prop, source); |
| /* |
| * If we tried to use a default value for a |
| * readonly property, it means that it was not |
| * present. Note this only applies to "truly" |
| * readonly properties, not set-once properties |
| * like volblocksize. |
| */ |
| if (zfs_prop_readonly(prop) && |
| !zfs_prop_setonce(prop) && |
| *source != NULL && (*source)[0] == '\0') { |
| *source = NULL; |
| return (-1); |
| } |
| break; |
| |
| case PROP_TYPE_STRING: |
| 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, zprop_source_t *srctype, char *source, |
| char *statbuf, size_t statlen) |
| { |
| if (statbuf == NULL || |
| srctype == NULL || *srctype == ZPROP_SRC_TEMPORARY) { |
| return; |
| } |
| |
| if (source == NULL) { |
| *srctype = ZPROP_SRC_NONE; |
| } else if (source[0] == '\0') { |
| *srctype = ZPROP_SRC_DEFAULT; |
| } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { |
| *srctype = ZPROP_SRC_RECEIVED; |
| } else { |
| if (strcmp(source, zhp->zfs_name) == 0) { |
| *srctype = ZPROP_SRC_LOCAL; |
| } else { |
| (void) strlcpy(statbuf, source, statlen); |
| *srctype = ZPROP_SRC_INHERITED; |
| } |
| } |
| |
| } |
| |
| int |
| zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, |
| size_t proplen, boolean_t literal) |
| { |
| zfs_prop_t prop; |
| int err = 0; |
| |
| if (zhp->zfs_recvd_props == NULL) |
| if (get_recvd_props_ioctl(zhp) != 0) |
| return (-1); |
| |
| prop = zfs_name_to_prop(propname); |
| |
| if (prop != ZPROP_INVAL) { |
| uint64_t cookie; |
| if (!nvlist_exists(zhp->zfs_recvd_props, propname)) |
| return (-1); |
| zfs_set_recvd_props_mode(zhp, &cookie); |
| err = zfs_prop_get(zhp, prop, propbuf, proplen, |
| NULL, NULL, 0, literal); |
| zfs_unset_recvd_props_mode(zhp, &cookie); |
| } else { |
| nvlist_t *propval; |
| char *recvdval; |
| if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, |
| propname, &propval) != 0) |
| return (-1); |
| verify(nvlist_lookup_string(propval, ZPROP_VALUE, |
| &recvdval) == 0); |
| (void) strlcpy(propbuf, recvdval, proplen); |
| } |
| |
| return (err == 0 ? 0 : -1); |
| } |
| |
| static int |
| get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) |
| { |
| nvlist_t *value; |
| nvpair_t *pair; |
| |
| value = zfs_get_clones_nvl(zhp); |
| if (value == NULL) |
| return (-1); |
| |
| propbuf[0] = '\0'; |
| for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; |
| pair = nvlist_next_nvpair(value, pair)) { |
| if (propbuf[0] != '\0') |
| (void) strlcat(propbuf, ",", proplen); |
| (void) strlcat(propbuf, nvpair_name(pair), proplen); |
| } |
| |
| return (0); |
| } |
| |
| struct get_clones_arg { |
| uint64_t numclones; |
| nvlist_t *value; |
| const char *origin; |
| char buf[ZFS_MAX_DATASET_NAME_LEN]; |
| }; |
| |
| int |
| get_clones_cb(zfs_handle_t *zhp, void *arg) |
| { |
| struct get_clones_arg *gca = arg; |
| |
| if (gca->numclones == 0) { |
| zfs_close(zhp); |
| return (0); |
| } |
| |
| if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), |
| NULL, NULL, 0, B_TRUE) != 0) |
| goto out; |
| if (strcmp(gca->buf, gca->origin) == 0) { |
| fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); |
| gca->numclones--; |
| } |
| |
| out: |
| (void) zfs_iter_children(zhp, get_clones_cb, gca); |
| zfs_close(zhp); |
| return (0); |
| } |
| |
| nvlist_t * |
| zfs_get_clones_nvl(zfs_handle_t *zhp) |
| { |
| nvlist_t *nv, *value; |
| |
| if (nvlist_lookup_nvlist(zhp->zfs_props, |
| zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { |
| struct get_clones_arg gca; |
| |
| /* |
| * if this is a snapshot, then the kernel wasn't able |
| * to get the clones. Do it by slowly iterating. |
| */ |
| if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) |
| return (NULL); |
| if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) |
| return (NULL); |
| if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { |
| nvlist_free(nv); |
| return (NULL); |
| } |
| |
| gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); |
| gca.value = value; |
| gca.origin = zhp->zfs_name; |
| |
| if (gca.numclones != 0) { |
| zfs_handle_t *root; |
| char pool[ZFS_MAX_DATASET_NAME_LEN]; |
| char *cp = pool; |
| |
| /* get the pool name */ |
| (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); |
| (void) strsep(&cp, "/@"); |
| root = zfs_open(zhp->zfs_hdl, pool, |
| ZFS_TYPE_FILESYSTEM); |
| if (root == NULL) { |
| nvlist_free(nv); |
| nvlist_free(value); |
| return (NULL); |
| } |
| |
| (void) get_clones_cb(root, &gca); |
| } |
| |
| if (gca.numclones != 0 || |
| nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || |
| nvlist_add_nvlist(zhp->zfs_props, |
| zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { |
| nvlist_free(nv); |
| nvlist_free(value); |
| return (NULL); |
| } |
| nvlist_free(nv); |
| nvlist_free(value); |
| verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, |
| zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); |
| } |
| |
| verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); |
| |
| return (value); |
| } |
| |
| /* |
| * Accepts a property and value and checks that the value |
| * matches the one found by the channel program. If they are |
| * not equal, print both of them. |
| */ |
| static void |
| zcp_check(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t intval, |
| const char *strval) |
| { |
| if (!zhp->zfs_hdl->libzfs_prop_debug) |
| return; |
| int error; |
| char *poolname = zhp->zpool_hdl->zpool_name; |
| const char *prop_name = zfs_prop_to_name(prop); |
| const char *program = |
| "args = ...\n" |
| "ds = args['dataset']\n" |
| "prop = args['property']\n" |
| "value, setpoint = zfs.get_prop(ds, prop)\n" |
| "return {value=value, setpoint=setpoint}\n"; |
| nvlist_t *outnvl; |
| nvlist_t *retnvl; |
| nvlist_t *argnvl = fnvlist_alloc(); |
| |
| fnvlist_add_string(argnvl, "dataset", zhp->zfs_name); |
| fnvlist_add_string(argnvl, "property", zfs_prop_to_name(prop)); |
| |
| error = lzc_channel_program_nosync(poolname, program, |
| 10 * 1000 * 1000, 10 * 1024 * 1024, argnvl, &outnvl); |
| |
| if (error == 0) { |
| retnvl = fnvlist_lookup_nvlist(outnvl, "return"); |
| if (zfs_prop_get_type(prop) == PROP_TYPE_NUMBER) { |
| int64_t ans; |
| error = nvlist_lookup_int64(retnvl, "value", &ans); |
| if (error != 0) { |
| (void) fprintf(stderr, "%s: zcp check error: " |
| "%u\n", prop_name, error); |
| return; |
| } |
| if (ans != intval) { |
| (void) fprintf(stderr, "%s: zfs found %llu, " |
| "but zcp found %llu\n", prop_name, |
| (u_longlong_t)intval, (u_longlong_t)ans); |
| } |
| } else { |
| char *str_ans; |
| error = nvlist_lookup_string(retnvl, "value", &str_ans); |
| if (error != 0) { |
| (void) fprintf(stderr, "%s: zcp check error: " |
| "%u\n", prop_name, error); |
| return; |
| } |
| if (strcmp(strval, str_ans) != 0) { |
| (void) fprintf(stderr, |
| "%s: zfs found '%s', but zcp found '%s'\n", |
| prop_name, strval, str_ans); |
| } |
| } |
| } else { |
| (void) fprintf(stderr, "%s: zcp check failed, channel program " |
| "error: %u\n", prop_name, error); |
| } |
| nvlist_free(argnvl); |
| nvlist_free(outnvl); |
| } |
| |
| /* |
| * 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, |
| zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) |
| { |
| char *source = NULL; |
| uint64_t val; |
| const char *str; |
| const char *strval; |
| boolean_t received = zfs_is_recvd_props_mode(zhp); |
| |
| /* |
| * Check to see if this property applies to our object |
| */ |
| if (!zfs_prop_valid_for_type(prop, zhp->zfs_type, B_FALSE)) |
| return (-1); |
| |
| if (received && zfs_prop_readonly(prop)) |
| return (-1); |
| |
| if (src) |
| *src = ZPROP_SRC_NONE; |
| |
| switch (prop) { |
| 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", |
| (u_longlong_t)val); |
| } |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| case ZFS_PROP_MOUNTPOINT: |
| /* |
| * Getting the precise mountpoint can be tricky. |
| * |
| * - for 'none' or 'legacy', return those values. |
| * - 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. |
| */ |
| |
| str = getprop_string(zhp, prop, &source); |
| |
| if (str[0] == '/') { |
| char buf[MAXPATHLEN]; |
| char *root = buf; |
| const char *relpath; |
| |
| /* |
| * If we inherit the mountpoint, even from a dataset |
| * with a received value, the source will be the path of |
| * the dataset we inherit from. If source is |
| * ZPROP_SOURCE_VAL_RECVD, the received value is not |
| * inherited. |
| */ |
| if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { |
| relpath = ""; |
| } else { |
| relpath = zhp->zfs_name + strlen(source); |
| if (relpath[0] == '/') |
| relpath++; |
| } |
| |
| if ((zpool_get_prop(zhp->zpool_hdl, |
| ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, |
| B_FALSE)) || (strcmp(root, "-") == 0)) |
| root[0] = '\0'; |
| /* |
| * Special case an alternate root of '/'. This will |
| * avoid having multiple leading slashes in the |
| * mountpoint path. |
| */ |
| if (strcmp(root, "/") == 0) |
| root++; |
| |
| /* |
| * If the mountpoint is '/' then skip over this |
| * if we are obtaining either an alternate root or |
| * an inherited mountpoint. |
| */ |
| if (str[1] == '\0' && (root[0] != '\0' || |
| relpath[0] != '\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); |
| } |
| zcp_check(zhp, prop, 0, propbuf); |
| break; |
| |
| case ZFS_PROP_ORIGIN: |
| str = getprop_string(zhp, prop, &source); |
| if (str == NULL) |
| return (-1); |
| (void) strlcpy(propbuf, str, proplen); |
| zcp_check(zhp, prop, 0, str); |
| break; |
| |
| case ZFS_PROP_CLONES: |
| if (get_clones_string(zhp, propbuf, proplen) != 0) |
| return (-1); |
| break; |
| |
| case ZFS_PROP_QUOTA: |
| case ZFS_PROP_REFQUOTA: |
| case ZFS_PROP_RESERVATION: |
| case ZFS_PROP_REFRESERVATION: |
| |
| 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_nicebytes(val, propbuf, proplen); |
| } |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| case ZFS_PROP_FILESYSTEM_LIMIT: |
| case ZFS_PROP_SNAPSHOT_LIMIT: |
| case ZFS_PROP_FILESYSTEM_COUNT: |
| case ZFS_PROP_SNAPSHOT_COUNT: |
| |
| if (get_numeric_property(zhp, prop, src, &source, &val) != 0) |
| return (-1); |
| |
| /* |
| * If limit is UINT64_MAX, 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 it's |
| * set locally. |
| */ |
| if (literal) { |
| (void) snprintf(propbuf, proplen, "%llu", |
| (u_longlong_t)val); |
| } else if (val == UINT64_MAX) { |
| (void) strlcpy(propbuf, "none", proplen); |
| } else { |
| zfs_nicenum(val, propbuf, proplen); |
| } |
| |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| case ZFS_PROP_REFRATIO: |
| case ZFS_PROP_COMPRESSRATIO: |
| if (get_numeric_property(zhp, prop, src, &source, &val) != 0) |
| return (-1); |
| if (literal) |
| (void) snprintf(propbuf, proplen, "%llu.%02llu", |
| (u_longlong_t)(val / 100), |
| (u_longlong_t)(val % 100)); |
| else |
| (void) snprintf(propbuf, proplen, "%llu.%02llux", |
| (u_longlong_t)(val / 100), |
| (u_longlong_t)(val % 100)); |
| zcp_check(zhp, prop, val, NULL); |
| 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; |
| case ZFS_TYPE_BOOKMARK: |
| str = "bookmark"; |
| break; |
| default: |
| abort(); |
| } |
| (void) snprintf(propbuf, proplen, "%s", str); |
| zcp_check(zhp, prop, 0, propbuf); |
| 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); |
| zcp_check(zhp, prop, 0, propbuf); |
| break; |
| |
| case ZFS_PROP_MLSLABEL: |
| { |
| #ifdef HAVE_MLSLABEL |
| m_label_t *new_sl = NULL; |
| char *ascii = NULL; /* human readable label */ |
| |
| (void) strlcpy(propbuf, |
| getprop_string(zhp, prop, &source), proplen); |
| |
| if (literal || (strcasecmp(propbuf, |
| ZFS_MLSLABEL_DEFAULT) == 0)) |
| break; |
| |
| /* |
| * Try to translate the internal hex string to |
| * human-readable output. If there are any |
| * problems just use the hex string. |
| */ |
| |
| if (str_to_label(propbuf, &new_sl, MAC_LABEL, |
| L_NO_CORRECTION, NULL) == -1) { |
| m_label_free(new_sl); |
| break; |
| } |
| |
| if (label_to_str(new_sl, &ascii, M_LABEL, |
| DEF_NAMES) != 0) { |
| if (ascii) |
| free(ascii); |
| m_label_free(new_sl); |
| break; |
| } |
| m_label_free(new_sl); |
| |
| (void) strlcpy(propbuf, ascii, proplen); |
| free(ascii); |
| #else |
| (void) strlcpy(propbuf, |
| getprop_string(zhp, prop, &source), proplen); |
| #endif /* HAVE_MLSLABEL */ |
| } |
| break; |
| |
| case ZFS_PROP_GUID: |
| case ZFS_PROP_CREATETXG: |
| case ZFS_PROP_OBJSETID: |
| /* |
| * These properties are stored as numbers, but they are |
| * identifiers. |
| * We don't want them to be pretty printed, because pretty |
| * printing mangles the ID into a truncated and useless value. |
| */ |
| if (get_numeric_property(zhp, prop, src, &source, &val) != 0) |
| return (-1); |
| (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| case ZFS_PROP_REFERENCED: |
| case ZFS_PROP_AVAILABLE: |
| case ZFS_PROP_USED: |
| case ZFS_PROP_USEDSNAP: |
| case ZFS_PROP_USEDDS: |
| case ZFS_PROP_USEDREFRESERV: |
| case ZFS_PROP_USEDCHILD: |
| 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_nicebytes(val, propbuf, proplen); |
| } |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| default: |
| switch (zfs_prop_get_type(prop)) { |
| case PROP_TYPE_NUMBER: |
| 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); |
| } |
| zcp_check(zhp, prop, val, NULL); |
| break; |
| |
| case PROP_TYPE_STRING: |
| str = getprop_string(zhp, prop, &source); |
| if (str == NULL) |
| return (-1); |
| |
| (void) strlcpy(propbuf, str, proplen); |
| zcp_check(zhp, prop, 0, str); |
| break; |
| |
| case PROP_TYPE_INDEX: |
| if (get_numeric_property(zhp, prop, src, |
| &source, &val) != 0) |
| return (-1); |
| if (zfs_prop_index_to_string(prop, val, &strval) != 0) |
| return (-1); |
| |
| (void) strlcpy(propbuf, strval, proplen); |
| zcp_check(zhp, prop, 0, strval); |
| 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; |
| uint64_t val = 0; |
| |
| (void) get_numeric_property(zhp, prop, NULL, &source, &val); |
| |
| return (val); |
| } |
| |
| int |
| zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) |
| { |
| char buf[64]; |
| |
| (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); |
| return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); |
| } |
| |
| /* |
| * 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, |
| zprop_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, B_FALSE)) { |
| return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, |
| dgettext(TEXT_DOMAIN, "cannot get property '%s'"), |
| zfs_prop_to_name(prop))); |
| } |
| |
| if (src) |
| *src = ZPROP_SRC_NONE; |
| |
| if (get_numeric_property(zhp, prop, src, &source, value) != 0) |
| return (-1); |
| |
| get_source(zhp, src, source, statbuf, statlen); |
| |
| return (0); |
| } |
| |
| #ifdef HAVE_IDMAP |
| static int |
| idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, |
| char **domainp, idmap_rid_t *ridp) |
| { |
| idmap_get_handle_t *get_hdl = NULL; |
| idmap_stat status; |
| int err = EINVAL; |
| |
| if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) |
| goto out; |
| |
| if (isuser) { |
| err = idmap_get_sidbyuid(get_hdl, id, |
| IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); |
| } else { |
| err = idmap_get_sidbygid(get_hdl, id, |
| IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); |
| } |
| if (err == IDMAP_SUCCESS && |
| idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && |
| status == IDMAP_SUCCESS) |
| err = 0; |
| else |
| err = EINVAL; |
| out: |
| if (get_hdl) |
| idmap_get_destroy(get_hdl); |
| return (err); |
| } |
| #endif /* HAVE_IDMAP */ |
| |
| /* |
| * convert the propname into parameters needed by kernel |
| * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 |
| * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 |
| * Eg: groupquota@staff -> ZFS_PROP_GROUPQUOTA, "", 1234 |
| * Eg: groupused@staff -> ZFS_PROP_GROUPUSED, "", 1234 |
| * Eg: projectquota@123 -> ZFS_PROP_PROJECTQUOTA, "", 123 |
| * Eg: projectused@789 -> ZFS_PROP_PROJECTUSED, "", 789 |
| */ |
| static int |
| userquota_propname_decode(const char *propname, boolean_t zoned, |
| zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) |
| { |
| zfs_userquota_prop_t type; |
| char *cp; |
| boolean_t isuser; |
| boolean_t isgroup; |
| boolean_t isproject; |
| struct passwd *pw; |
| struct group *gr; |
| |
| domain[0] = '\0'; |
| |
| /* Figure out the property type ({user|group|project}{quota|space}) */ |
| for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { |
| if (strncmp(propname, zfs_userquota_prop_prefixes[type], |
| strlen(zfs_userquota_prop_prefixes[type])) == 0) |
| break; |
| } |
| if (type == ZFS_NUM_USERQUOTA_PROPS) |
| return (EINVAL); |
| *typep = type; |
| |
| isuser = (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_USERUSED || |
| type == ZFS_PROP_USEROBJQUOTA || |
| type == ZFS_PROP_USEROBJUSED); |
| isgroup = (type == ZFS_PROP_GROUPQUOTA || type == ZFS_PROP_GROUPUSED || |
| type == ZFS_PROP_GROUPOBJQUOTA || |
| type == ZFS_PROP_GROUPOBJUSED); |
| isproject = (type == ZFS_PROP_PROJECTQUOTA || |
| type == ZFS_PROP_PROJECTUSED || type == ZFS_PROP_PROJECTOBJQUOTA || |
| type == ZFS_PROP_PROJECTOBJUSED); |
| |
| cp = strchr(propname, '@') + 1; |
| |
| if (isuser && (pw = getpwnam(cp)) != NULL) { |
| if (zoned && getzoneid() == GLOBAL_ZONEID) |
| return (ENOENT); |
| *ridp = pw->pw_uid; |
| } else if (isgroup && (gr = getgrnam(cp)) != NULL) { |
| if (zoned && getzoneid() == GLOBAL_ZONEID) |
| return (ENOENT); |
| *ridp = gr->gr_gid; |
| } else if (!isproject && strchr(cp, '@')) { |
| #ifdef HAVE_IDMAP |
| /* |
| * It's a SID name (eg "user@domain") that needs to be |
| * turned into S-1-domainID-RID. |
| */ |
| directory_error_t e; |
| char *numericsid = NULL; |
| char *end; |
| |
| if (zoned && getzoneid() == GLOBAL_ZONEID) |
| return (ENOENT); |
| if (isuser) { |
| e = directory_sid_from_user_name(NULL, |
| cp, &numericsid); |
| } else { |
| e = directory_sid_from_group_name(NULL, |
| cp, &numericsid); |
| } |
| if (e != NULL) { |
| directory_error_free(e); |
| return (ENOENT); |
| } |
| if (numericsid == NULL) |
| return (ENOENT); |
| cp = numericsid; |
| (void) strlcpy(domain, cp, domainlen); |
| cp = strrchr(domain, '-'); |
| *cp = '\0'; |
| cp++; |
| |
| errno = 0; |
| *ridp = strtoull(cp, &end, 10); |
| free(numericsid); |
| |
| if (errno != 0 || *end != '\0') |
| return (EINVAL); |
| #else |
| return (ENOSYS); |
| #endif /* HAVE_IDMAP */ |
| } else { |
| /* It's a user/group/project ID (eg "12345"). */ |
| uid_t id; |
| char *end; |
| id = strtoul(cp, &end, 10); |
| if (*end != '\0') |
| return (EINVAL); |
| if (id > MAXUID && !isproject) { |
| #ifdef HAVE_IDMAP |
| /* It's an ephemeral ID. */ |
| idmap_rid_t rid; |
| char *mapdomain; |
| |
| if (idmap_id_to_numeric_domain_rid(id, isuser, |
| &mapdomain, &rid) != 0) |
| return (ENOENT); |
| (void) strlcpy(domain, mapdomain, domainlen); |
| *ridp = rid; |
| #else |
| return (ENOSYS); |
| #endif /* HAVE_IDMAP */ |
| } else { |
| *ridp = id; |
| } |
| } |
| |
| return (0); |
| } |
| |
| static int |
| zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, |
| uint64_t *propvalue, zfs_userquota_prop_t *typep) |
| { |
| int err; |
| zfs_cmd_t zc = {"\0"}; |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| err = userquota_propname_decode(propname, |
| zfs_prop_get_int(zhp, ZFS_PROP_ZONED), |
| typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); |
| zc.zc_objset_type = *typep; |
| if (err) |
| return (err); |
| |
| err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); |
| if (err) |
| return (err); |
| |
| *propvalue = zc.zc_cookie; |
| return (0); |
| } |
| |
| int |
| zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, |
| uint64_t *propvalue) |
| { |
| zfs_userquota_prop_t type; |
| |
| return (zfs_prop_get_userquota_common(zhp, propname, propvalue, |
| &type)); |
| } |
| |
| int |
| zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, |
| char *propbuf, int proplen, boolean_t literal) |
| { |
| int err; |
| uint64_t propvalue; |
| zfs_userquota_prop_t type; |
| |
| err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, |
| &type); |
| |
| if (err) |
| return (err); |
| |
| if (literal) { |
| (void) snprintf(propbuf, proplen, "%llu", |
| (u_longlong_t)propvalue); |
| } else if (propvalue == 0 && |
| (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA || |
| type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA || |
| type == ZFS_PROP_PROJECTQUOTA || |
| type == ZFS_PROP_PROJECTOBJQUOTA)) { |
| (void) strlcpy(propbuf, "none", proplen); |
| } else if (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA || |
| type == ZFS_PROP_USERUSED || type == ZFS_PROP_GROUPUSED || |
| type == ZFS_PROP_PROJECTUSED || type == ZFS_PROP_PROJECTQUOTA) { |
| zfs_nicebytes(propvalue, propbuf, proplen); |
| } else { |
| zfs_nicenum(propvalue, propbuf, proplen); |
| } |
| return (0); |
| } |
| |
| int |
| zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, |
| uint64_t *propvalue) |
| { |
| int err; |
| zfs_cmd_t zc = {"\0"}; |
| const char *snapname; |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| snapname = strchr(propname, '@') + 1; |
| if (strchr(snapname, '@')) { |
| (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); |
| } else { |
| /* snapname is the short name, append it to zhp's fsname */ |
| char *cp; |
| |
| (void) strlcpy(zc.zc_value, zhp->zfs_name, |
| sizeof (zc.zc_value)); |
| cp = strchr(zc.zc_value, '@'); |
| if (cp != NULL) |
| *cp = '\0'; |
| (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); |
| (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); |
| } |
| |
| err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); |
| if (err) |
| return (err); |
| |
| *propvalue = zc.zc_cookie; |
| return (0); |
| } |
| |
| int |
| zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, |
| char *propbuf, int proplen, boolean_t literal) |
| { |
| int err; |
| uint64_t propvalue; |
| |
| err = zfs_prop_get_written_int(zhp, propname, &propvalue); |
| |
| if (err) |
| return (err); |
| |
| if (literal) { |
| (void) snprintf(propbuf, proplen, "%llu", |
| (u_longlong_t)propvalue); |
| } else { |
| zfs_nicebytes(propvalue, propbuf, proplen); |
| } |
| |
| 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 name of the parent pool for the given zfs handle. |
| */ |
| const char * |
| zfs_get_pool_name(const zfs_handle_t *zhp) |
| { |
| return (zhp->zpool_hdl->zpool_name); |
| } |
| |
| /* |
| * Returns the type of the given zfs handle. |
| */ |
| zfs_type_t |
| zfs_get_type(const zfs_handle_t *zhp) |
| { |
| return (zhp->zfs_type); |
| } |
| |
| /* |
| * Is one dataset name a child dataset of another? |
| * |
| * Needs to handle these cases: |
| * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" |
| * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" |
| * Descendant? No. No. No. Yes. |
| */ |
| static boolean_t |
| is_descendant(const char *ds1, const char *ds2) |
| { |
| size_t d1len = strlen(ds1); |
| |
| /* ds2 can't be a descendant if it's smaller */ |
| if (strlen(ds2) < d1len) |
| return (B_FALSE); |
| |
| /* otherwise, compare strings and verify that there's a '/' char */ |
| return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); |
| } |
| |
| /* |
| * Given a complete name, return just the portion that refers to the parent. |
| * Will return -1 if there is no parent (path is just the name of the |
| * pool). |
| */ |
| static int |
| parent_name(const char *path, char *buf, size_t buflen) |
| { |
| char *slashp; |
| |
| (void) strlcpy(buf, path, buflen); |
| |
| if ((slashp = strrchr(buf, '/')) == NULL) |
| return (-1); |
| *slashp = '\0'; |
| |
| return (0); |
| } |
| |
| int |
| zfs_parent_name(zfs_handle_t *zhp, char *buf, size_t buflen) |
| { |
| return (parent_name(zfs_get_name(zhp), buf, buflen)); |
| } |
| |
| /* |
| * If accept_ancestor is false, then check to make sure that the given path has |
| * a parent, and that it exists. If accept_ancestor is true, then find the |
| * closest existing ancestor for the given path. In prefixlen return the |
| * length of already existing prefix of the given path. 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, |
| boolean_t accept_ancestor, int *prefixlen) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| char parent[ZFS_MAX_DATASET_NAME_LEN]; |
| char *slash; |
| zfs_handle_t *zhp; |
| char errbuf[1024]; |
| uint64_t is_zoned; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "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 */ |
| while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { |
| if (errno == ENOENT && accept_ancestor) { |
| /* |
| * Go deeper to find an ancestor, give up on top level. |
| */ |
| if (parent_name(parent, parent, sizeof (parent)) != 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "no such pool '%s'"), zc.zc_name); |
| return (zfs_error(hdl, EZFS_NOENT, errbuf)); |
| } |
| } else if (errno == ENOENT) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "parent does not exist")); |
| return (zfs_error(hdl, EZFS_NOENT, errbuf)); |
| } else |
| return (zfs_standard_error(hdl, errno, errbuf)); |
| } |
| |
| is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); |
| if (zoned != NULL) |
| *zoned = is_zoned; |
| |
| /* we are in a non-global zone, but parent is in the global zone */ |
| if (getzoneid() != GLOBAL_ZONEID && !is_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); |
| if (prefixlen != NULL) |
| *prefixlen = strlen(parent); |
| return (0); |
| } |
| |
| /* |
| * Finds whether the dataset of the given type(s) exists. |
| */ |
| boolean_t |
| zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) |
| { |
| zfs_handle_t *zhp; |
| |
| if (!zfs_validate_name(hdl, path, types, B_FALSE)) |
| return (B_FALSE); |
| |
| /* |
| * Try to get stats for the dataset, which will tell us if it exists. |
| */ |
| if ((zhp = make_dataset_handle(hdl, path)) != NULL) { |
| int ds_type = zhp->zfs_type; |
| |
| zfs_close(zhp); |
| if (types & ds_type) |
| return (B_TRUE); |
| } |
| return (B_FALSE); |
| } |
| |
| /* |
| * Given a path to 'target', create all the ancestors between |
| * the prefixlen portion of the path, and the target itself. |
| * Fail if the initial prefixlen-ancestor does not already exist. |
| */ |
| int |
| create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) |
| { |
| zfs_handle_t *h; |
| char *cp; |
| const char *opname; |
| |
| /* make sure prefix exists */ |
| cp = target + prefixlen; |
| if (*cp != '/') { |
| assert(strchr(cp, '/') == NULL); |
| h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); |
| } else { |
| *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, '/')) != NULL; *cp = '/', cp++) { |
| |
| *cp = '\0'; |
| |
| h = make_dataset_handle(hdl, target); |
| if (h) { |
| /* it already exists, nothing to do here */ |
| zfs_close(h); |
| continue; |
| } |
| |
| if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, |
| NULL) != 0) { |
| opname = dgettext(TEXT_DOMAIN, "create"); |
| goto ancestorerr; |
| } |
| |
| h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); |
| if (h == NULL) { |
| opname = dgettext(TEXT_DOMAIN, "open"); |
| goto ancestorerr; |
| } |
| |
| if (zfs_mount(h, NULL, 0) != 0) { |
| opname = dgettext(TEXT_DOMAIN, "mount"); |
| goto ancestorerr; |
| } |
| |
| if (zfs_share(h) != 0) { |
| opname = dgettext(TEXT_DOMAIN, "share"); |
| goto ancestorerr; |
| } |
| |
| zfs_close(h); |
| } |
| |
| return (0); |
| |
| ancestorerr: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "failed to %s ancestor '%s'"), opname, target); |
| return (-1); |
| } |
| |
| /* |
| * Creates non-existing ancestors of the given path. |
| */ |
| int |
| zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) |
| { |
| int prefix; |
| char *path_copy; |
| char errbuf[1024]; |
| int rc = 0; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
| "cannot create '%s'"), path); |
| |
| /* |
| * Check that we are not passing the nesting limit |
| * before we start creating any ancestors. |
| */ |
| if (dataset_nestcheck(path) != 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "maximum name nesting depth exceeded")); |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| } |
| |
| if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) |
| return (-1); |
| |
| if ((path_copy = strdup(path)) != NULL) { |
| rc = create_parents(hdl, path_copy, prefix); |
| free(path_copy); |
| } |
| if (path_copy == NULL || rc != 0) |
| return (-1); |
| |
| 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) |
| { |
| int ret; |
| uint64_t size = 0; |
| uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); |
| uint64_t zoned; |
| enum lzc_dataset_type ost; |
| zpool_handle_t *zpool_handle; |
| uint8_t *wkeydata = NULL; |
| uint_t wkeylen = 0; |
| char errbuf[1024]; |
| char parent[ZFS_MAX_DATASET_NAME_LEN]; |
| |
| (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, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| if (dataset_nestcheck(path) != 0) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "maximum name nesting depth exceeded")); |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| } |
| |
| /* validate parents exist */ |
| if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 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. |
| */ |
| if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "dataset already exists")); |
| return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
| } |
| |
| if (type == ZFS_TYPE_VOLUME) |
| ost = LZC_DATSET_TYPE_ZVOL; |
| else |
| ost = LZC_DATSET_TYPE_ZFS; |
| |
| /* open zpool handle for prop validation */ |
| char pool_path[ZFS_MAX_DATASET_NAME_LEN]; |
| (void) strlcpy(pool_path, path, sizeof (pool_path)); |
| |
| /* truncate pool_path at first slash */ |
| char *p = strchr(pool_path, '/'); |
| if (p != NULL) |
| *p = '\0'; |
| |
| if ((zpool_handle = zpool_open(hdl, pool_path)) == NULL) |
| return (-1); |
| |
| if (props && (props = zfs_valid_proplist(hdl, type, props, |
| zoned, NULL, zpool_handle, B_TRUE, errbuf)) == 0) { |
| zpool_close(zpool_handle); |
| return (-1); |
| } |
| zpool_close(zpool_handle); |
| |
| 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)); |
| } |
| } |
| |
| (void) parent_name(path, parent, sizeof (parent)); |
| if (zfs_crypto_create(hdl, parent, props, NULL, B_TRUE, |
| &wkeydata, &wkeylen) != 0) { |
| nvlist_free(props); |
| return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); |
| } |
| |
| /* create the dataset */ |
| ret = lzc_create(path, ost, props, wkeydata, wkeylen); |
| nvlist_free(props); |
| if (wkeydata != NULL) |
| free(wkeydata); |
| |
| /* check for failure */ |
| if (ret != 0) { |
| switch (errno) { |
| case ENOENT: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "no such parent '%s'"), parent); |
| return (zfs_error(hdl, EZFS_NOENT, errbuf)); |
| |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded to set this " |
| "property or value")); |
| return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); |
| |
| case EACCES: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "encryption root's key is not loaded " |
| "or provided")); |
| return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); |
| |
| case ERANGE: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "invalid property value(s) specified")); |
| 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. If the file system |
| * does not exist this function does nothing. |
| */ |
| int |
| zfs_destroy(zfs_handle_t *zhp, boolean_t defer) |
| { |
| int error; |
| |
| if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT && defer) |
| return (EINVAL); |
| |
| if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { |
| nvlist_t *nv = fnvlist_alloc(); |
| fnvlist_add_boolean(nv, zhp->zfs_name); |
| error = lzc_destroy_bookmarks(nv, NULL); |
| fnvlist_free(nv); |
| if (error != 0) { |
| return (zfs_standard_error_fmt(zhp->zfs_hdl, error, |
| dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), |
| zhp->zfs_name)); |
| } |
| return (0); |
| } |
| |
| if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { |
| nvlist_t *nv = fnvlist_alloc(); |
| fnvlist_add_boolean(nv, zhp->zfs_name); |
| error = lzc_destroy_snaps(nv, defer, NULL); |
| fnvlist_free(nv); |
| } else { |
| error = lzc_destroy(zhp->zfs_name); |
| } |
| |
| if (error != 0 && error != ENOENT) { |
| 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 { |
| nvlist_t *nvl; |
| const char *snapname; |
| }; |
| |
| static int |
| zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) |
| { |
| struct destroydata *dd = arg; |
| char name[ZFS_MAX_DATASET_NAME_LEN]; |
| int rv = 0; |
| |
| if (snprintf(name, sizeof (name), "%s@%s", zhp->zfs_name, |
| dd->snapname) >= sizeof (name)) |
| return (EINVAL); |
| |
| if (lzc_exists(name)) |
| verify(nvlist_add_boolean(dd->nvl, name) == 0); |
| |
| rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); |
| 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, boolean_t defer) |
| { |
| int ret; |
| struct destroydata dd = { 0 }; |
| |
| dd.snapname = snapname; |
| verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); |
| (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); |
| |
| if (nvlist_empty(dd.nvl)) { |
| ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, |
| dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), |
| zhp->zfs_name, snapname); |
| } else { |
| ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); |
| } |
| nvlist_free(dd.nvl); |
| return (ret); |
| } |
| |
| /* |
| * Destroys all the snapshots named in the nvlist. |
| */ |
| int |
| zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) |
| { |
| int ret; |
| nvlist_t *errlist = NULL; |
| nvpair_t *pair; |
| |
| ret = lzc_destroy_snaps(snaps, defer, &errlist); |
| |
| if (ret == 0) { |
| nvlist_free(errlist); |
| return (0); |
| } |
| |
| if (nvlist_empty(errlist)) { |
| char errbuf[1024]; |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); |
| |
| ret = zfs_standard_error(hdl, ret, errbuf); |
| } |
| for (pair = nvlist_next_nvpair(errlist, NULL); |
| pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { |
| char errbuf[1024]; |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), |
| nvpair_name(pair)); |
| |
| switch (fnvpair_value_int32(pair)) { |
| case EEXIST: |
| zfs_error_aux(hdl, |
| dgettext(TEXT_DOMAIN, "snapshot is cloned")); |
| ret = zfs_error(hdl, EZFS_EXISTS, errbuf); |
| break; |
| default: |
| ret = zfs_standard_error(hdl, errno, errbuf); |
| break; |
| } |
| } |
| |
| nvlist_free(errlist); |
| return (ret); |
| } |
| |
| /* |
| * 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) |
| { |
| char parent[ZFS_MAX_DATASET_NAME_LEN]; |
| int ret; |
| char errbuf[1024]; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| 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/clone name */ |
| if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| /* validate parents exist */ |
| if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) |
| return (-1); |
| |
| (void) parent_name(target, parent, sizeof (parent)); |
| |
| /* do the clone */ |
| |
| if (props) { |
| zfs_type_t type; |
| |
| if (ZFS_IS_VOLUME(zhp)) { |
| type = ZFS_TYPE_VOLUME; |
| } else { |
| type = ZFS_TYPE_FILESYSTEM; |
| } |
| if ((props = zfs_valid_proplist(hdl, type, props, zoned, |
| zhp, zhp->zpool_hdl, B_TRUE, errbuf)) == NULL) |
| return (-1); |
| if (zfs_fix_auto_resv(zhp, props) == -1) { |
| nvlist_free(props); |
| return (-1); |
| } |
| } |
| |
| if (zfs_crypto_clone_check(hdl, zhp, parent, props) != 0) { |
| nvlist_free(props); |
| return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); |
| } |
| |
| ret = lzc_clone(target, zhp->zfs_name, props); |
| nvlist_free(props); |
| |
| 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)); |
| } |
| } |
| |
| return (ret); |
| } |
| |
| /* |
| * Promotes the given clone fs to be the clone parent. |
| */ |
| int |
| zfs_promote(zfs_handle_t *zhp) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| char snapname[ZFS_MAX_DATASET_NAME_LEN]; |
| int ret; |
| 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)); |
| } |
| |
| if (zhp->zfs_dmustats.dds_origin[0] == '\0') { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "not a cloned filesystem")); |
| return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); |
| } |
| |
| if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| ret = lzc_promote(zhp->zfs_name, snapname, sizeof (snapname)); |
| |
| if (ret != 0) { |
| switch (ret) { |
| case EACCES: |
| /* |
| * Promoting encrypted dataset outside its |
| * encryption root. |
| */ |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "cannot promote dataset outside its " |
| "encryption root")); |
| return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
| |
| case EEXIST: |
| /* There is a conflicting snapshot name. */ |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "conflicting snapshot '%s' from parent '%s'"), |
| snapname, zhp->zfs_dmustats.dds_origin); |
| return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
| |
| default: |
| return (zfs_standard_error(hdl, ret, errbuf)); |
| } |
| } |
| return (ret); |
| } |
| |
| typedef struct snapdata { |
| nvlist_t *sd_nvl; |
| const char *sd_snapname; |
| } snapdata_t; |
| |
| static int |
| zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) |
| { |
| snapdata_t *sd = arg; |
| char name[ZFS_MAX_DATASET_NAME_LEN]; |
| int rv = 0; |
| |
| if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { |
| if (snprintf(name, sizeof (name), "%s@%s", zfs_get_name(zhp), |
| sd->sd_snapname) >= sizeof (name)) |
| return (EINVAL); |
| |
| fnvlist_add_boolean(sd->sd_nvl, name); |
| |
| rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); |
| } |
| zfs_close(zhp); |
| |
| return (rv); |
| } |
| |
| int |
| zfs_remap_indirects(libzfs_handle_t *hdl, const char *fs) |
| { |
| int err; |
| char errbuf[1024]; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
| "cannot remap dataset '%s'"), fs); |
| |
| err = lzc_remap(fs); |
| |
| if (err != 0) { |
| switch (err) { |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| case EINVAL: |
| (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error(hdl, err, errbuf); |
| break; |
| } |
| } |
| |
| return (err); |
| } |
| |
| /* |
| * Creates snapshots. The keys in the snaps nvlist are the snapshots to be |
| * created. |
| */ |
| int |
| zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) |
| { |
| int ret; |
| char errbuf[1024]; |
| nvpair_t *elem; |
| nvlist_t *errors; |
| zpool_handle_t *zpool_hdl; |
| char pool[ZFS_MAX_DATASET_NAME_LEN]; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
| "cannot create snapshots ")); |
| |
| elem = NULL; |
| while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { |
| const char *snapname = nvpair_name(elem); |
| |
| /* validate the target name */ |
| if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, |
| B_TRUE)) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot create snapshot '%s'"), snapname); |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| } |
| } |
| |
| /* |
| * get pool handle for prop validation. assumes all snaps are in the |
| * same pool, as does lzc_snapshot (below). |
| */ |
| elem = nvlist_next_nvpair(snaps, NULL); |
| (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); |
| pool[strcspn(pool, "/@")] = '\0'; |
| zpool_hdl = zpool_open(hdl, pool); |
| if (zpool_hdl == NULL) |
| return (-1); |
| |
| if (props != NULL && |
| (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, |
| props, B_FALSE, NULL, zpool_hdl, B_FALSE, errbuf)) == NULL) { |
| zpool_close(zpool_hdl); |
| return (-1); |
| } |
| zpool_close(zpool_hdl); |
| |
| ret = lzc_snapshot(snaps, props, &errors); |
| |
| if (ret != 0) { |
| boolean_t printed = B_FALSE; |
| for (elem = nvlist_next_nvpair(errors, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(errors, elem)) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot create snapshot '%s'"), nvpair_name(elem)); |
| (void) zfs_standard_error(hdl, |
| fnvpair_value_int32(elem), errbuf); |
| printed = B_TRUE; |
| } |
| if (!printed) { |
| switch (ret) { |
| case EXDEV: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "multiple snapshots of same " |
| "fs not allowed")); |
| (void) zfs_error(hdl, EZFS_EXISTS, errbuf); |
| |
| break; |
| default: |
| (void) zfs_standard_error(hdl, ret, errbuf); |
| } |
| } |
| } |
| |
| nvlist_free(props); |
| nvlist_free(errors); |
| return (ret); |
| } |
| |
| int |
| zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, |
| nvlist_t *props) |
| { |
| int ret; |
| snapdata_t sd = { 0 }; |
| char fsname[ZFS_MAX_DATASET_NAME_LEN]; |
| char *cp; |
| zfs_handle_t *zhp; |
| char errbuf[1024]; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
| "cannot snapshot %s"), path); |
| |
| if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| (void) strlcpy(fsname, path, sizeof (fsname)); |
| cp = strchr(fsname, '@'); |
| *cp = '\0'; |
| sd.sd_snapname = cp + 1; |
| |
| if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | |
| ZFS_TYPE_VOLUME)) == NULL) { |
| return (-1); |
| } |
| |
| verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); |
| if (recursive) { |
| (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); |
| } else { |
| fnvlist_add_boolean(sd.sd_nvl, path); |
| } |
| |
| ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); |
| nvlist_free(sd.sd_nvl); |
| zfs_close(zhp); |
| return (ret); |
| } |
| |
| /* |
| * 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 */ |
| boolean_t cb_error; |
| boolean_t cb_force; |
| } rollback_data_t; |
| |
| static int |
| rollback_destroy_dependent(zfs_handle_t *zhp, void *data) |
| { |
| rollback_data_t *cbp = data; |
| prop_changelist_t *clp; |
| |
| /* We must destroy this clone; first unmount it */ |
| clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
| cbp->cb_force ? MS_FORCE: 0); |
| if (clp == NULL || changelist_prefix(clp) != 0) { |
| cbp->cb_error = B_TRUE; |
| zfs_close(zhp); |
| return (0); |
| } |
| if (zfs_destroy(zhp, B_FALSE) != 0) |
| cbp->cb_error = B_TRUE; |
| else |
| changelist_remove(clp, zhp->zfs_name); |
| (void) changelist_postfix(clp); |
| changelist_free(clp); |
| |
| zfs_close(zhp); |
| return (0); |
| } |
| |
| static int |
| rollback_destroy(zfs_handle_t *zhp, void *data) |
| { |
| rollback_data_t *cbp = data; |
| |
| if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { |
| cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, |
| rollback_destroy_dependent, cbp); |
| |
| cbp->cb_error |= zfs_destroy(zhp, B_FALSE); |
| } |
| |
| zfs_close(zhp); |
| return (0); |
| } |
| |
| /* |
| * Given a dataset, rollback to a specific snapshot, discarding any |
| * data changes since then and making it the active dataset. |
| * |
| * Any snapshots and bookmarks more recent than the target are |
| * destroyed, along with their dependents (i.e. clones). |
| */ |
| int |
| zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) |
| { |
| rollback_data_t cb = { 0 }; |
| int err; |
| boolean_t restore_resv = 0; |
| uint64_t old_volsize = 0, new_volsize; |
| zfs_prop_t resv_prop = { 0 }; |
| uint64_t min_txg = 0; |
| |
| assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || |
| zhp->zfs_type == ZFS_TYPE_VOLUME); |
| |
| /* |
| * Destroy all recent snapshots and their dependents. |
| */ |
| cb.cb_force = force; |
| cb.cb_target = snap->zfs_name; |
| cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); |
| |
| if (cb.cb_create > 0) |
| min_txg = cb.cb_create; |
| |
| (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb, |
| min_txg, 0); |
| |
| (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); |
| |
| if (cb.cb_error) |
| return (-1); |
| |
| /* |
| * Now that we have verified that the snapshot is the latest, |
| * rollback to the given snapshot. |
| */ |
| |
| if (zhp->zfs_type == ZFS_TYPE_VOLUME) { |
| if (zfs_which_resv_prop(zhp, &resv_prop) < 0) |
| return (-1); |
| old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
| restore_resv = |
| (old_volsize == zfs_prop_get_int(zhp, resv_prop)); |
| } |
| |
| /* |
| * Pass both the filesystem and the wanted snapshot names, |
| * we would get an error back if the snapshot is destroyed or |
| * a new snapshot is created before this request is processed. |
| */ |
| err = lzc_rollback_to(zhp->zfs_name, snap->zfs_name); |
| if (err != 0) { |
| char errbuf[1024]; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), |
| zhp->zfs_name); |
| switch (err) { |
| case EEXIST: |
| zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, |
| "there is a snapshot or bookmark more recent " |
| "than '%s'"), snap->zfs_name); |
| (void) zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf); |
| break; |
| case ESRCH: |
| zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, |
| "'%s' is not found among snapshots of '%s'"), |
| snap->zfs_name, zhp->zfs_name); |
| (void) zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf); |
| break; |
| case EINVAL: |
| (void) zfs_error(zhp->zfs_hdl, EZFS_BADTYPE, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error(zhp->zfs_hdl, err, errbuf); |
| } |
| return (err); |
| } |
| |
| /* |
| * For volumes, if the pre-rollback volsize matched the pre- |
| * rollback reservation and the volsize has changed then set |
| * the reservation property to the post-rollback volsize. |
| * Make a new handle since the rollback closed the dataset. |
| */ |
| if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && |
| (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { |
| if (restore_resv) { |
| new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
| if (old_volsize != new_volsize) |
| err = zfs_prop_set_int(zhp, resv_prop, |
| new_volsize); |
| } |
| zfs_close(zhp); |
| } |
| return (err); |
| } |
| |
| /* |
| * Renames the given dataset. |
| */ |
| int |
| zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, |
| boolean_t force_unmount) |
| { |
| int ret = 0; |
| zfs_cmd_t zc = {"\0"}; |
| char *delim; |
| prop_changelist_t *cl = NULL; |
| char parent[ZFS_MAX_DATASET_NAME_LEN]; |
| 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 source name is valid */ |
| if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| /* |
| * 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, B_TRUE)) |
| 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, B_TRUE)) |
| return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); |
| |
| /* validate parents */ |
| if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) |
| return (-1); |
| |
| /* 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 (is_descendant(zhp->zfs_name, target)) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "New dataset name cannot be a descendant 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) { |
| zfs_handle_t *zhrp; |
| char *parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); |
| if (parentname == NULL) { |
| ret = -1; |
| goto error; |
| } |
| delim = strchr(parentname, '@'); |
| *delim = '\0'; |
| zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); |
| free(parentname); |
| if (zhrp == NULL) { |
| ret = -1; |
| goto error; |
| } |
| zfs_close(zhrp); |
| } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { |
| if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, |
| CL_GATHER_ITER_MOUNTED, |
| force_unmount ? MS_FORCE : 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); |
| ret = -1; |
| 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 = zfs_ioctl(zhp->zfs_hdl, 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 '%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_EXISTS, errbuf); |
| } else if (errno == EACCES) { |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "cannot move encrypted child outside of " |
| "its encryption root")); |
| (void) zfs_error(hdl, EZFS_CRYPTOFAILED, 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 (cl != NULL) |
| (void) changelist_postfix(cl); |
| } else { |
| if (cl != NULL) { |
| changelist_rename(cl, zfs_get_name(zhp), target); |
| ret = changelist_postfix(cl); |
| } |
| } |
| |
| error: |
| if (cl != NULL) { |
| changelist_free(cl); |
| } |
| return (ret); |
| } |
| |
| nvlist_t * |
| zfs_get_all_props(zfs_handle_t *zhp) |
| { |
| return (zhp->zfs_props); |
| } |
| |
| nvlist_t * |
| zfs_get_recvd_props(zfs_handle_t *zhp) |
| { |
| if (zhp->zfs_recvd_props == NULL) |
| if (get_recvd_props_ioctl(zhp) != 0) |
| return (NULL); |
| return (zhp->zfs_recvd_props); |
| } |
| |
| nvlist_t * |
| zfs_get_user_props(zfs_handle_t *zhp) |
| { |
| return (zhp->zfs_user_props); |
| } |
| |
| /* |
| * 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. If the user has |
| * requested received property values, we also need to compute the width |
| * of the RECEIVED column. |
| */ |
| int |
| zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, |
| boolean_t literal) |
| { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| zprop_list_t *entry; |
| zprop_list_t **last, **start; |
| nvlist_t *userprops, *propval; |
| nvpair_t *elem; |
| char *strval; |
| char buf[ZFS_MAXPROPLEN]; |
| |
| if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 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 == ZPROP_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 (zprop_list_t))) == NULL || |
| ((entry->pl_user_prop = zfs_strdup(hdl, |
| nvpair_name(elem)))) == NULL) { |
| free(entry); |
| return (-1); |
| } |
| |
| entry->pl_prop = ZPROP_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 && !literal) |
| continue; |
| |
| if (entry->pl_prop != ZPROP_INVAL) { |
| if (zfs_prop_get(zhp, entry->pl_prop, |
| buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { |
| if (strlen(buf) > entry->pl_width) |
| entry->pl_width = strlen(buf); |
| } |
| if (received && zfs_prop_get_recvd(zhp, |
| zfs_prop_to_name(entry->pl_prop), |
| buf, sizeof (buf), literal) == 0) |
| if (strlen(buf) > entry->pl_recvd_width) |
| entry->pl_recvd_width = strlen(buf); |
| } else { |
| if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, |
| &propval) == 0) { |
| verify(nvlist_lookup_string(propval, |
| ZPROP_VALUE, &strval) == 0); |
| if (strlen(strval) > entry->pl_width) |
| entry->pl_width = strlen(strval); |
| } |
| if (received && zfs_prop_get_recvd(zhp, |
| entry->pl_user_prop, |
| buf, sizeof (buf), literal) == 0) |
| if (strlen(buf) > entry->pl_recvd_width) |
| entry->pl_recvd_width = strlen(buf); |
| } |
| } |
| |
| return (0); |
| } |
| |
| void |
| zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) |
| { |
| nvpair_t *curr; |
| nvpair_t *next; |
| |
| /* |
| * Keep a reference to the props-table against which we prune the |
| * properties. |
| */ |
| zhp->zfs_props_table = props; |
| |
| curr = nvlist_next_nvpair(zhp->zfs_props, NULL); |
| |
| while (curr) { |
| zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); |
| next = nvlist_next_nvpair(zhp->zfs_props, curr); |
| |
| /* |
| * User properties will result in ZPROP_INVAL, and since we |
| * only know how to prune standard ZFS properties, we always |
| * leave these in the list. This can also happen if we |
| * encounter an unknown DSL property (when running older |
| * software, for example). |
| */ |
| if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) |
| (void) nvlist_remove(zhp->zfs_props, |
| nvpair_name(curr), nvpair_type(curr)); |
| curr = next; |
| } |
| } |
| |
| static int |
| zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, |
| zfs_smb_acl_op_t cmd, char *resource1, char *resource2) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| nvlist_t *nvlist = NULL; |
| int error; |
| |
| (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); |
| (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); |
| zc.zc_cookie = (uint64_t)cmd; |
| |
| if (cmd == ZFS_SMB_ACL_RENAME) { |
| if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { |
| (void) no_memory(hdl); |
| return (0); |
| } |
| } |
| |
| switch (cmd) { |
| case ZFS_SMB_ACL_ADD: |
| case ZFS_SMB_ACL_REMOVE: |
| (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); |
| break; |
| case ZFS_SMB_ACL_RENAME: |
| if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, |
| resource1) != 0) { |
| (void) no_memory(hdl); |
| return (-1); |
| } |
| if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, |
| resource2) != 0) { |
| (void) no_memory(hdl); |
| return (-1); |
| } |
| if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { |
| nvlist_free(nvlist); |
| return (-1); |
| } |
| break; |
| case ZFS_SMB_ACL_PURGE: |
| break; |
| default: |
| return (-1); |
| } |
| error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); |
| nvlist_free(nvlist); |
| return (error); |
| } |
| |
| int |
| zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, |
| char *path, char *resource) |
| { |
| return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, |
| resource, NULL)); |
| } |
| |
| int |
| zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, |
| char *path, char *resource) |
| { |
| return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, |
| resource, NULL)); |
| } |
| |
| int |
| zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) |
| { |
| return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, |
| NULL, NULL)); |
| } |
| |
| int |
| zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, |
| char *oldname, char *newname) |
| { |
| return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, |
| oldname, newname)); |
| } |
| |
| int |
| zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, |
| zfs_userspace_cb_t func, void *arg) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| zfs_useracct_t buf[100]; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| int ret; |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| zc.zc_objset_type = type; |
| zc.zc_nvlist_dst = (uintptr_t)buf; |
| |
| for (;;) { |
| zfs_useracct_t *zua = buf; |
| |
| zc.zc_nvlist_dst_size = sizeof (buf); |
| if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { |
| char errbuf[1024]; |
| |
| if ((errno == ENOTSUP && |
| (type == ZFS_PROP_USEROBJUSED || |
| type == ZFS_PROP_GROUPOBJUSED || |
| type == ZFS_PROP_USEROBJQUOTA || |
| type == ZFS_PROP_GROUPOBJQUOTA || |
| type == ZFS_PROP_PROJECTOBJUSED || |
| type == ZFS_PROP_PROJECTOBJQUOTA || |
| type == ZFS_PROP_PROJECTUSED || |
| type == ZFS_PROP_PROJECTQUOTA))) |
| break; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot get used/quota for %s"), zc.zc_name); |
| return (zfs_standard_error_fmt(hdl, errno, errbuf)); |
| } |
| if (zc.zc_nvlist_dst_size == 0) |
| break; |
| |
| while (zc.zc_nvlist_dst_size > 0) { |
| if ((ret = func(arg, zua->zu_domain, zua->zu_rid, |
| zua->zu_space)) != 0) |
| return (ret); |
| zua++; |
| zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); |
| } |
| } |
| |
| return (0); |
| } |
| |
| struct holdarg { |
| nvlist_t *nvl; |
| const char *snapname; |
| const char *tag; |
| boolean_t recursive; |
| int error; |
| }; |
| |
| static int |
| zfs_hold_one(zfs_handle_t *zhp, void *arg) |
| { |
| struct holdarg *ha = arg; |
| char name[ZFS_MAX_DATASET_NAME_LEN]; |
| int rv = 0; |
| |
| if (snprintf(name, sizeof (name), "%s@%s", zhp->zfs_name, |
| ha->snapname) >= sizeof (name)) |
| return (EINVAL); |
| |
| if (lzc_exists(name)) |
| fnvlist_add_string(ha->nvl, name, ha->tag); |
| |
| if (ha->recursive) |
| rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); |
| zfs_close(zhp); |
| return (rv); |
| } |
| |
| int |
| zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, |
| boolean_t recursive, int cleanup_fd) |
| { |
| int ret; |
| struct holdarg ha; |
| |
| ha.nvl = fnvlist_alloc(); |
| ha.snapname = snapname; |
| ha.tag = tag; |
| ha.recursive = recursive; |
| (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); |
| |
| if (nvlist_empty(ha.nvl)) { |
| char errbuf[1024]; |
| |
| fnvlist_free(ha.nvl); |
| ret = ENOENT; |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot hold snapshot '%s@%s'"), |
| zhp->zfs_name, snapname); |
| (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); |
| return (ret); |
| } |
| |
| ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); |
| fnvlist_free(ha.nvl); |
| |
| return (ret); |
| } |
| |
| int |
| zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) |
| { |
| int ret; |
| nvlist_t *errors; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| char errbuf[1024]; |
| nvpair_t *elem; |
| |
| errors = NULL; |
| ret = lzc_hold(holds, cleanup_fd, &errors); |
| |
| if (ret == 0) { |
| /* There may be errors even in the success case. */ |
| fnvlist_free(errors); |
| return (0); |
| } |
| |
| if (nvlist_empty(errors)) { |
| /* no hold-specific errors */ |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot hold")); |
| switch (ret) { |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| case EINVAL: |
| (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error(hdl, ret, errbuf); |
| } |
| } |
| |
| for (elem = nvlist_next_nvpair(errors, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(errors, elem)) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot hold snapshot '%s'"), nvpair_name(elem)); |
| switch (fnvpair_value_int32(elem)) { |
| case E2BIG: |
| /* |
| * Temporary tags wind up having the ds object id |
| * prepended. So even if we passed the length check |
| * above, it's still possible for the tag to wind |
| * up being slightly too long. |
| */ |
| (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); |
| break; |
| case EINVAL: |
| (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| case EEXIST: |
| (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error(hdl, |
| fnvpair_value_int32(elem), errbuf); |
| } |
| } |
| |
| fnvlist_free(errors); |
| return (ret); |
| } |
| |
| static int |
| zfs_release_one(zfs_handle_t *zhp, void *arg) |
| { |
| struct holdarg *ha = arg; |
| char name[ZFS_MAX_DATASET_NAME_LEN]; |
| int rv = 0; |
| nvlist_t *existing_holds; |
| |
| if (snprintf(name, sizeof (name), "%s@%s", zhp->zfs_name, |
| ha->snapname) >= sizeof (name)) { |
| ha->error = EINVAL; |
| rv = EINVAL; |
| } |
| |
| if (lzc_get_holds(name, &existing_holds) != 0) { |
| ha->error = ENOENT; |
| } else if (!nvlist_exists(existing_holds, ha->tag)) { |
| ha->error = ESRCH; |
| } else { |
| nvlist_t *torelease = fnvlist_alloc(); |
| fnvlist_add_boolean(torelease, ha->tag); |
| fnvlist_add_nvlist(ha->nvl, name, torelease); |
| fnvlist_free(torelease); |
| } |
| |
| if (ha->recursive) |
| rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); |
| zfs_close(zhp); |
| return (rv); |
| } |
| |
| int |
| zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, |
| boolean_t recursive) |
| { |
| int ret; |
| struct holdarg ha; |
| nvlist_t *errors = NULL; |
| nvpair_t *elem; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| char errbuf[1024]; |
| |
| ha.nvl = fnvlist_alloc(); |
| ha.snapname = snapname; |
| ha.tag = tag; |
| ha.recursive = recursive; |
| ha.error = 0; |
| (void) zfs_release_one(zfs_handle_dup(zhp), &ha); |
| |
| if (nvlist_empty(ha.nvl)) { |
| fnvlist_free(ha.nvl); |
| ret = ha.error; |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot release hold from snapshot '%s@%s'"), |
| zhp->zfs_name, snapname); |
| if (ret == ESRCH) { |
| (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); |
| } else { |
| (void) zfs_standard_error(hdl, ret, errbuf); |
| } |
| return (ret); |
| } |
| |
| ret = lzc_release(ha.nvl, &errors); |
| fnvlist_free(ha.nvl); |
| |
| if (ret == 0) { |
| /* There may be errors even in the success case. */ |
| fnvlist_free(errors); |
| return (0); |
| } |
| |
| if (nvlist_empty(errors)) { |
| /* no hold-specific errors */ |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
| "cannot release")); |
| switch (errno) { |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error_fmt(hdl, errno, errbuf); |
| } |
| } |
| |
| for (elem = nvlist_next_nvpair(errors, NULL); |
| elem != NULL; |
| elem = nvlist_next_nvpair(errors, elem)) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, |
| "cannot release hold from snapshot '%s'"), |
| nvpair_name(elem)); |
| switch (fnvpair_value_int32(elem)) { |
| case ESRCH: |
| (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); |
| break; |
| case EINVAL: |
| (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| default: |
| (void) zfs_standard_error_fmt(hdl, |
| fnvpair_value_int32(elem), errbuf); |
| } |
| } |
| |
| fnvlist_free(errors); |
| return (ret); |
| } |
| |
| int |
| zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| int nvsz = 2048; |
| void *nvbuf; |
| int err = 0; |
| char errbuf[1024]; |
| |
| assert(zhp->zfs_type == ZFS_TYPE_VOLUME || |
| zhp->zfs_type == ZFS_TYPE_FILESYSTEM); |
| |
| tryagain: |
| |
| nvbuf = malloc(nvsz); |
| if (nvbuf == NULL) { |
| err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); |
| goto out; |
| } |
| |
| zc.zc_nvlist_dst_size = nvsz; |
| zc.zc_nvlist_dst = (uintptr_t)nvbuf; |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), |
| zc.zc_name); |
| switch (errno) { |
| case ENOMEM: |
| free(nvbuf); |
| nvsz = zc.zc_nvlist_dst_size; |
| goto tryagain; |
| |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| err = zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| case EINVAL: |
| err = zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| case ENOENT: |
| err = zfs_error(hdl, EZFS_NOENT, errbuf); |
| break; |
| default: |
| err = zfs_standard_error_fmt(hdl, errno, errbuf); |
| break; |
| } |
| } else { |
| /* success */ |
| int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); |
| if (rc) { |
| (void) snprintf(errbuf, sizeof (errbuf), dgettext( |
| TEXT_DOMAIN, "cannot get permissions on '%s'"), |
| zc.zc_name); |
| err = zfs_standard_error_fmt(hdl, rc, errbuf); |
| } |
| } |
| |
| free(nvbuf); |
| out: |
| return (err); |
| } |
| |
| int |
| zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) |
| { |
| zfs_cmd_t zc = {"\0"}; |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| char *nvbuf; |
| char errbuf[1024]; |
| size_t nvsz; |
| int err; |
| |
| assert(zhp->zfs_type == ZFS_TYPE_VOLUME || |
| zhp->zfs_type == ZFS_TYPE_FILESYSTEM); |
| |
| err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); |
| assert(err == 0); |
| |
| nvbuf = malloc(nvsz); |
| |
| err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); |
| assert(err == 0); |
| |
| zc.zc_nvlist_src_size = nvsz; |
| zc.zc_nvlist_src = (uintptr_t)nvbuf; |
| zc.zc_perm_action = un; |
| |
| (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
| |
| if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), |
| zc.zc_name); |
| switch (errno) { |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| err = zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| case EINVAL: |
| err = zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| case ENOENT: |
| err = zfs_error(hdl, EZFS_NOENT, errbuf); |
| break; |
| default: |
| err = zfs_standard_error_fmt(hdl, errno, errbuf); |
| break; |
| } |
| } |
| |
| free(nvbuf); |
| |
| return (err); |
| } |
| |
| int |
| zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) |
| { |
| int err; |
| char errbuf[1024]; |
| |
| err = lzc_get_holds(zhp->zfs_name, nvl); |
| |
| if (err != 0) { |
| libzfs_handle_t *hdl = zhp->zfs_hdl; |
| |
| (void) snprintf(errbuf, sizeof (errbuf), |
| dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), |
| zhp->zfs_name); |
| switch (err) { |
| case ENOTSUP: |
| zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
| "pool must be upgraded")); |
| err = zfs_error(hdl, EZFS_BADVERSION, errbuf); |
| break; |
| case EINVAL: |
| err = zfs_error(hdl, EZFS_BADTYPE, errbuf); |
| break; |
| case ENOENT: |
| err = zfs_error(hdl, EZFS_NOENT, errbuf); |
| break; |
| default: |
| err = zfs_standard_error_fmt(hdl, errno, errbuf); |
| break; |
| } |
| } |
| |
| return (err); |
| } |
| |
| /* |
| * The theory of raidz space accounting |
| * |
| * The "referenced" property of RAIDZ vdevs is scaled such that a 128KB block |
| * will "reference" 128KB, even though it allocates more than that, to store the |
| * parity information (and perhaps skip sectors). This concept of the |
| * "referenced" (and other DMU space accounting) being lower than the allocated |
| * space by a constant factor is called "raidz deflation." |
| * |
| * As mentioned above, the constant factor for raidz deflation assumes a 128KB |
| * block size. However, zvols typically have a much smaller block size (default |
| * 8KB). These smaller blocks may require proportionally much more parity |
| * information (and perhaps skip sectors). In this case, the change to the |
| * "referenced" property may be much more than the logical block size. |
| * |
| * Suppose a raidz vdev has 5 disks with ashift=12. A 128k block may be written |
| * as follows. |
| * |
| * +-------+-------+-------+-------+-------+ |
| * | disk1 | disk2 | disk3 | disk4 | disk5 | |
| * +-------+-------+-------+-------+-------+ |
| * | P0 | D0 | D8 | D16 | D24 | |
| * | P1 | D1 | D9 | D17 | D25 | |
| * | P2 | D2 | D10 | D18 | D26 | |
| * | P3 | D3 | D11 | D19 | D27 | |
| * | P4 | D4 | D12 | D20 | D28 | |
| * | P5 | D5 | D13 | D21 | D29 | |
| * | P6 | D6 | D14 | D22 | D30 | |
| * | P7 | D7 | D15 | D23 | D31 | |
| * +-------+-------+-------+-------+-------+ |
| * |
| * Above, notice that 160k was allocated: 8 x 4k parity sectors + 32 x 4k data |
| * sectors. The dataset's referenced will increase by 128k and the pool's |
| * allocated and free properties will be adjusted by 160k. |
| * |
| * A 4k block written to the same raidz vdev will require two 4k sectors. The |
| * blank cells represent unallocated space. |
| * |
| * +-------+-------+-------+-------+-------+ |
| * | disk1 | disk2 | disk3 | disk4 | disk5 | |
| * +-------+-------+-------+-------+-------+ |
| * | P0 | D0 | | | | |
| * +-------+-------+-------+-------+-------+ |
| * |
| * Above, notice that the 4k block required one sector for parity and another |
| * for data. vdev_raidz_asize() will return 8k and as such the pool's allocated |
| * and free properties will be adjusted by 8k. The dataset will not be charged |
| * 8k. Rather, it will be charged a value that is scaled according to the |
| * overhead of the 128k block on the same vdev. This 8k allocation will be |
| * charged 8k * 128k / 160k. 128k is from SPA_OLD_MAXBLOCKSIZE and 160k is as |
| * calculated in the 128k block example above. |
| * |
| * Every raidz allocation is sized to be a multiple of nparity+1 sectors. That |
| * is, every raidz1 allocation will be a multiple of 2 sectors, raidz2 |
| * allocations are a multiple of 3 sectors, and raidz3 allocations are a |
| * multiple of of 4 sectors. When a block does not fill the required number of |
| * sectors, skip blocks (sectors) are used. |
| * |
| * An 8k block being written to a raidz vdev may be written as follows: |
| * |
| * +-------+-------+-------+-------+-------+ |
| * | disk1 | disk2 | disk3 | disk4 | disk5 | |
| * +-------+-------+-------+-------+-------+ |
| * | P0 | D0 | D1 | S0 | | |
| * +-------+-------+-------+-------+-------+ |
| * |
| * In order to maintain the nparity+1 allocation size, a skip block (S0) was |
| * added. For this 8k block, the pool's allocated and free properties are |
| * adjusted by 16k and the dataset's referenced is increased by 16k * 128k / |
| * 160k. Again, 128k is from SPA_OLD_MAXBLOCKSIZE and 160k is as calculated in |
| * the 128k block example above. |
| * |
| * Compression may lead to a variety of block sizes being written for the same |
| * volume or file. There is no clear way to reserve just the amount of space |
| * that will be required, so the worst case (no compression) is assumed. |
| * Note that metadata blocks will typically be compressed, so the reservation |
| * size returned by zvol_volsize_to_reservation() will generally be slightly |
| * larger than the maximum that the volume can reference. |
| */ |
| |
| /* |
| * Derived from function of same name in module/zfs/vdev_raidz.c. Returns the |
| * amount of space (in bytes) that will be allocated for the specified block |
| * size. Note that the "referenced" space accounted will be less than this, but |
| * not necessarily equal to "blksize", due to RAIDZ deflation. |
| */ |
| static uint64_t |
| vdev_raidz_asize(uint64_t ndisks, uint64_t nparity, uint64_t ashift, |
| uint64_t blksize) |
| { |
| uint64_t asize, ndata; |
| |
| ASSERT3U(ndisks, >, nparity); |
| ndata = ndisks - nparity; |
| asize = ((blksize - 1) >> ashift) + 1; |
| asize += nparity * ((asize + ndata - 1) / ndata); |
| asize = roundup(asize, nparity + 1) << ashift; |
| |
| return (asize); |
| } |
| |
| /* |
| * Determine how much space will be allocated if it lands on the most space- |
| * inefficient top-level vdev. Returns the size in bytes required to store one |
| * copy of the volume data. See theory comment above. |
| */ |
| static uint64_t |
| volsize_from_vdevs(zpool_handle_t *zhp, uint64_t nblocks, uint64_t blksize) |
| { |
| nvlist_t *config, *tree, **vdevs; |
| uint_t nvdevs, v; |
| uint64_t ret = 0; |
| |
| config = zpool_get_config(zhp, NULL); |
| if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) != 0 || |
| nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, |
| &vdevs, &nvdevs) != 0) { |
| return (nblocks * blksize); |
| } |
| |
| for (v = 0; v < nvdevs; v++) { |
| char *type; |
| uint64_t nparity, ashift, asize, tsize; |
| nvlist_t **disks; |
| uint_t ndisks; |
| uint64_t volsize; |
| |
| if (nvlist_lookup_string(vdevs[v], ZPOOL_CONFIG_TYPE, |
| &type) != 0 || strcmp(type, VDEV_TYPE_RAIDZ) != 0 || |
| nvlist_lookup_uint64(vdevs[v], ZPOOL_CONFIG_NPARITY, |
| &nparity) != 0 || |
| nvlist_lookup_uint64(vdevs[v], ZPOOL_CONFIG_ASHIFT, |
| &ashift) != 0 || |
| nvlist_lookup_nvlist_array(vdevs[v], ZPOOL_CONFIG_CHILDREN, |
| &disks, &ndisks) != 0) { |
| continue; |
| } |
| |
| /* allocation size for the "typical" 128k block */ |
| tsize = vdev_raidz_asize(ndisks, nparity, ashift, |
| SPA_OLD_MAXBLOCKSIZE); |
| /* allocation size for the blksize block */ |
| asize = vdev_raidz_asize(ndisks, nparity, ashift, blksize); |
| |
| /* |
| * Scale this size down as a ratio of 128k / tsize. See theory |
| * statement above. |
| */ |
| volsize = nblocks * asize * SPA_OLD_MAXBLOCKSIZE / tsize; |
| if (volsize > ret) { |
| ret = volsize; |
| } |
| } |
| |
| if (ret == 0) { |
| ret = nblocks * blksize; |
| } |
| |
| return (ret); |
| } |
| |
| /* |
| * Convert the zvol's volume size to an appropriate reservation. See theory |
| * comment above. |
| * |
| * Note: If this routine is updated, it is necessary to update the ZFS test |
| * suite's shell version in reservation.shlib. |
| */ |
| uint64_t |
| zvol_volsize_to_reservation(zpool_handle_t *zph, uint64_t volsize, |
| nvlist_t *props) |
| { |
| uint64_t numdb; |
| uint64_t nblocks, volblocksize; |
| int ncopies; |
| char *strval; |
| |
| if (nvlist_lookup_string(props, |
| zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) |
| ncopies = atoi(strval); |
| else |
| ncopies = 1; |
| if (nvlist_lookup_uint64(props, |
| zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), |
| &volblocksize) != 0) |
| volblocksize = ZVOL_DEFAULT_BLOCKSIZE; |
| |
| nblocks = volsize / volblocksize; |
| /* |
| * Metadata defaults to using 128k blocks, not volblocksize blocks. For |
| * this reason, only the data blocks are scaled based on vdev config. |
| */ |
| volsize = volsize_from_vdevs(zph, nblocks, volblocksize); |
| |
| /* start with metadnode L0-L6 */ |
| numdb = 7; |
| /* calculate number of indirects */ |
| while (nblocks > 1) { |
| nblocks += DNODES_PER_LEVEL - 1; |
| nblocks /= DNODES_PER_LEVEL; |
| numdb += nblocks; |
| } |
| numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); |
| volsize *= ncopies; |
| /* |
| * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't |
| * compressed, but in practice they compress down to about |
| * 1100 bytes |
| */ |
| numdb *= 1ULL << DN_MAX_INDBLKSHIFT; |
| volsize += numdb; |
| return (volsize); |
| } |