libzfs_dataset.c revision 197867
1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd 22168404Spjd/* 23185029Spjd * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24168404Spjd * Use is subject to license terms. 25168404Spjd */ 26168404Spjd 27168404Spjd#include <assert.h> 28168404Spjd#include <ctype.h> 29168404Spjd#include <errno.h> 30168404Spjd#include <libintl.h> 31168404Spjd#include <math.h> 32168404Spjd#include <stdio.h> 33168404Spjd#include <stdlib.h> 34168404Spjd#include <strings.h> 35168404Spjd#include <unistd.h> 36185029Spjd#include <stddef.h> 37168404Spjd#include <zone.h> 38168404Spjd#include <fcntl.h> 39168404Spjd#include <sys/mntent.h> 40168404Spjd#include <sys/mnttab.h> 41168404Spjd#include <sys/mount.h> 42185029Spjd#include <sys/avl.h> 43185029Spjd#include <priv.h> 44185029Spjd#include <pwd.h> 45185029Spjd#include <grp.h> 46185029Spjd#include <stddef.h> 47168404Spjd 48168404Spjd#include <sys/spa.h> 49168404Spjd#include <sys/zap.h> 50168404Spjd#include <libzfs.h> 51168404Spjd 52168404Spjd#include "zfs_namecheck.h" 53168404Spjd#include "zfs_prop.h" 54168404Spjd#include "libzfs_impl.h" 55185029Spjd#include "zfs_deleg.h" 56168404Spjd 57168676Spjdstatic int zvol_create_link_common(libzfs_handle_t *, const char *, int); 58168676Spjd 59168404Spjd/* 60168404Spjd * Given a single type (not a mask of types), return the type in a human 61168404Spjd * readable form. 62168404Spjd */ 63168404Spjdconst char * 64168404Spjdzfs_type_to_name(zfs_type_t type) 65168404Spjd{ 66168404Spjd switch (type) { 67168404Spjd case ZFS_TYPE_FILESYSTEM: 68168404Spjd return (dgettext(TEXT_DOMAIN, "filesystem")); 69168404Spjd case ZFS_TYPE_SNAPSHOT: 70168404Spjd return (dgettext(TEXT_DOMAIN, "snapshot")); 71168404Spjd case ZFS_TYPE_VOLUME: 72168404Spjd return (dgettext(TEXT_DOMAIN, "volume")); 73168404Spjd } 74168404Spjd 75168404Spjd return (NULL); 76168404Spjd} 77168404Spjd 78168404Spjd/* 79168404Spjd * Given a path and mask of ZFS types, return a string describing this dataset. 80168404Spjd * This is used when we fail to open a dataset and we cannot get an exact type. 81168404Spjd * We guess what the type would have been based on the path and the mask of 82168404Spjd * acceptable types. 83168404Spjd */ 84168404Spjdstatic const char * 85168404Spjdpath_to_str(const char *path, int types) 86168404Spjd{ 87168404Spjd /* 88168404Spjd * When given a single type, always report the exact type. 89168404Spjd */ 90168404Spjd if (types == ZFS_TYPE_SNAPSHOT) 91168404Spjd return (dgettext(TEXT_DOMAIN, "snapshot")); 92168404Spjd if (types == ZFS_TYPE_FILESYSTEM) 93168404Spjd return (dgettext(TEXT_DOMAIN, "filesystem")); 94168404Spjd if (types == ZFS_TYPE_VOLUME) 95168404Spjd return (dgettext(TEXT_DOMAIN, "volume")); 96168404Spjd 97168404Spjd /* 98168404Spjd * The user is requesting more than one type of dataset. If this is the 99168404Spjd * case, consult the path itself. If we're looking for a snapshot, and 100168404Spjd * a '@' is found, then report it as "snapshot". Otherwise, remove the 101168404Spjd * snapshot attribute and try again. 102168404Spjd */ 103168404Spjd if (types & ZFS_TYPE_SNAPSHOT) { 104168404Spjd if (strchr(path, '@') != NULL) 105168404Spjd return (dgettext(TEXT_DOMAIN, "snapshot")); 106168404Spjd return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 107168404Spjd } 108168404Spjd 109168404Spjd 110168404Spjd /* 111168404Spjd * The user has requested either filesystems or volumes. 112168404Spjd * We have no way of knowing a priori what type this would be, so always 113168404Spjd * report it as "filesystem" or "volume", our two primitive types. 114168404Spjd */ 115168404Spjd if (types & ZFS_TYPE_FILESYSTEM) 116168404Spjd return (dgettext(TEXT_DOMAIN, "filesystem")); 117168404Spjd 118168404Spjd assert(types & ZFS_TYPE_VOLUME); 119168404Spjd return (dgettext(TEXT_DOMAIN, "volume")); 120168404Spjd} 121168404Spjd 122168404Spjd/* 123168404Spjd * Validate a ZFS path. This is used even before trying to open the dataset, to 124168404Spjd * provide a more meaningful error message. We place a more useful message in 125168404Spjd * 'buf' detailing exactly why the name was not valid. 126168404Spjd */ 127168404Spjdstatic int 128185029Spjdzfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 129185029Spjd boolean_t modifying) 130168404Spjd{ 131168404Spjd namecheck_err_t why; 132168404Spjd char what; 133168404Spjd 134168404Spjd if (dataset_namecheck(path, &why, &what) != 0) { 135168404Spjd if (hdl != NULL) { 136168404Spjd switch (why) { 137168404Spjd case NAME_ERR_TOOLONG: 138168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 139168404Spjd "name is too long")); 140168404Spjd break; 141168404Spjd 142168404Spjd case NAME_ERR_LEADING_SLASH: 143168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 144168404Spjd "leading slash in name")); 145168404Spjd break; 146168404Spjd 147168404Spjd case NAME_ERR_EMPTY_COMPONENT: 148168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 149168404Spjd "empty component in name")); 150168404Spjd break; 151168404Spjd 152168404Spjd case NAME_ERR_TRAILING_SLASH: 153168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 154168404Spjd "trailing slash in name")); 155168404Spjd break; 156168404Spjd 157168404Spjd case NAME_ERR_INVALCHAR: 158168404Spjd zfs_error_aux(hdl, 159168404Spjd dgettext(TEXT_DOMAIN, "invalid character " 160168404Spjd "'%c' in name"), what); 161168404Spjd break; 162168404Spjd 163168404Spjd case NAME_ERR_MULTIPLE_AT: 164168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 165168404Spjd "multiple '@' delimiters in name")); 166168404Spjd break; 167168404Spjd 168168404Spjd case NAME_ERR_NOLETTER: 169168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 170168404Spjd "pool doesn't begin with a letter")); 171168404Spjd break; 172168404Spjd 173168404Spjd case NAME_ERR_RESERVED: 174168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 175168404Spjd "name is reserved")); 176168404Spjd break; 177168404Spjd 178168404Spjd case NAME_ERR_DISKLIKE: 179168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 180168404Spjd "reserved disk name")); 181168404Spjd break; 182168404Spjd } 183168404Spjd } 184168404Spjd 185168404Spjd return (0); 186168404Spjd } 187168404Spjd 188168404Spjd if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 189168404Spjd if (hdl != NULL) 190168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 191168404Spjd "snapshot delimiter '@' in filesystem name")); 192168404Spjd return (0); 193168404Spjd } 194168404Spjd 195168404Spjd if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 196168404Spjd if (hdl != NULL) 197168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 198168404Spjd "missing '@' delimiter in snapshot name")); 199168404Spjd return (0); 200168404Spjd } 201168404Spjd 202185029Spjd if (modifying && strchr(path, '%') != NULL) { 203185029Spjd if (hdl != NULL) 204185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 205185029Spjd "invalid character %c in name"), '%'); 206185029Spjd return (0); 207185029Spjd } 208185029Spjd 209168404Spjd return (-1); 210168404Spjd} 211168404Spjd 212168404Spjdint 213168404Spjdzfs_name_valid(const char *name, zfs_type_t type) 214168404Spjd{ 215185029Spjd if (type == ZFS_TYPE_POOL) 216185029Spjd return (zpool_name_valid(NULL, B_FALSE, name)); 217185029Spjd return (zfs_validate_name(NULL, name, type, B_FALSE)); 218168404Spjd} 219168404Spjd 220168404Spjd/* 221168404Spjd * This function takes the raw DSL properties, and filters out the user-defined 222168404Spjd * properties into a separate nvlist. 223168404Spjd */ 224185029Spjdstatic nvlist_t * 225185029Spjdprocess_user_props(zfs_handle_t *zhp, nvlist_t *props) 226168404Spjd{ 227168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 228168404Spjd nvpair_t *elem; 229168404Spjd nvlist_t *propval; 230185029Spjd nvlist_t *nvl; 231168404Spjd 232185029Spjd if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 233185029Spjd (void) no_memory(hdl); 234185029Spjd return (NULL); 235185029Spjd } 236168404Spjd 237168404Spjd elem = NULL; 238185029Spjd while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 239168404Spjd if (!zfs_prop_user(nvpair_name(elem))) 240168404Spjd continue; 241168404Spjd 242168404Spjd verify(nvpair_value_nvlist(elem, &propval) == 0); 243185029Spjd if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 244185029Spjd nvlist_free(nvl); 245185029Spjd (void) no_memory(hdl); 246185029Spjd return (NULL); 247185029Spjd } 248168404Spjd } 249168404Spjd 250185029Spjd return (nvl); 251168404Spjd} 252168404Spjd 253185029Spjdstatic zpool_handle_t * 254185029Spjdzpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 255185029Spjd{ 256185029Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 257185029Spjd zpool_handle_t *zph; 258185029Spjd 259185029Spjd if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 260185029Spjd if (hdl->libzfs_pool_handles != NULL) 261185029Spjd zph->zpool_next = hdl->libzfs_pool_handles; 262185029Spjd hdl->libzfs_pool_handles = zph; 263185029Spjd } 264185029Spjd return (zph); 265185029Spjd} 266185029Spjd 267185029Spjdstatic zpool_handle_t * 268185029Spjdzpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 269185029Spjd{ 270185029Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 271185029Spjd zpool_handle_t *zph = hdl->libzfs_pool_handles; 272185029Spjd 273185029Spjd while ((zph != NULL) && 274185029Spjd (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 275185029Spjd zph = zph->zpool_next; 276185029Spjd return (zph); 277185029Spjd} 278185029Spjd 279168404Spjd/* 280185029Spjd * Returns a handle to the pool that contains the provided dataset. 281185029Spjd * If a handle to that pool already exists then that handle is returned. 282185029Spjd * Otherwise, a new handle is created and added to the list of handles. 283185029Spjd */ 284185029Spjdstatic zpool_handle_t * 285185029Spjdzpool_handle(zfs_handle_t *zhp) 286185029Spjd{ 287185029Spjd char *pool_name; 288185029Spjd int len; 289185029Spjd zpool_handle_t *zph; 290185029Spjd 291185029Spjd len = strcspn(zhp->zfs_name, "/@") + 1; 292185029Spjd pool_name = zfs_alloc(zhp->zfs_hdl, len); 293185029Spjd (void) strlcpy(pool_name, zhp->zfs_name, len); 294185029Spjd 295185029Spjd zph = zpool_find_handle(zhp, pool_name, len); 296185029Spjd if (zph == NULL) 297185029Spjd zph = zpool_add_handle(zhp, pool_name); 298185029Spjd 299185029Spjd free(pool_name); 300185029Spjd return (zph); 301185029Spjd} 302185029Spjd 303185029Spjdvoid 304185029Spjdzpool_free_handles(libzfs_handle_t *hdl) 305185029Spjd{ 306185029Spjd zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 307185029Spjd 308185029Spjd while (zph != NULL) { 309185029Spjd next = zph->zpool_next; 310185029Spjd zpool_close(zph); 311185029Spjd zph = next; 312185029Spjd } 313185029Spjd hdl->libzfs_pool_handles = NULL; 314185029Spjd} 315185029Spjd 316185029Spjd/* 317168404Spjd * Utility function to gather stats (objset and zpl) for the given object. 318168404Spjd */ 319168404Spjdstatic int 320168404Spjdget_stats(zfs_handle_t *zhp) 321168404Spjd{ 322168404Spjd zfs_cmd_t zc = { 0 }; 323168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 324185029Spjd nvlist_t *allprops, *userprops; 325168404Spjd 326168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 327168404Spjd 328168404Spjd if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 329168404Spjd return (-1); 330168404Spjd 331168404Spjd while (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0) { 332168404Spjd if (errno == ENOMEM) { 333168404Spjd if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 334168404Spjd zcmd_free_nvlists(&zc); 335168404Spjd return (-1); 336168404Spjd } 337168404Spjd } else { 338168404Spjd zcmd_free_nvlists(&zc); 339168404Spjd return (-1); 340168404Spjd } 341168404Spjd } 342168404Spjd 343168404Spjd zhp->zfs_dmustats = zc.zc_objset_stats; /* structure assignment */ 344168404Spjd 345185029Spjd if (zcmd_read_dst_nvlist(hdl, &zc, &allprops) != 0) { 346168404Spjd zcmd_free_nvlists(&zc); 347168404Spjd return (-1); 348168404Spjd } 349168404Spjd 350168404Spjd zcmd_free_nvlists(&zc); 351168404Spjd 352185029Spjd if ((userprops = process_user_props(zhp, allprops)) == NULL) { 353185029Spjd nvlist_free(allprops); 354168404Spjd return (-1); 355185029Spjd } 356168404Spjd 357185029Spjd nvlist_free(zhp->zfs_props); 358185029Spjd nvlist_free(zhp->zfs_user_props); 359185029Spjd 360185029Spjd zhp->zfs_props = allprops; 361185029Spjd zhp->zfs_user_props = userprops; 362185029Spjd 363168404Spjd return (0); 364168404Spjd} 365168404Spjd 366168404Spjd/* 367168404Spjd * Refresh the properties currently stored in the handle. 368168404Spjd */ 369168404Spjdvoid 370168404Spjdzfs_refresh_properties(zfs_handle_t *zhp) 371168404Spjd{ 372168404Spjd (void) get_stats(zhp); 373168404Spjd} 374168404Spjd 375168404Spjd/* 376168404Spjd * Makes a handle from the given dataset name. Used by zfs_open() and 377168404Spjd * zfs_iter_* to create child handles on the fly. 378168404Spjd */ 379168404Spjdzfs_handle_t * 380168404Spjdmake_dataset_handle(libzfs_handle_t *hdl, const char *path) 381168404Spjd{ 382168404Spjd zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 383185029Spjd char *logstr; 384168404Spjd 385168404Spjd if (zhp == NULL) 386168404Spjd return (NULL); 387168404Spjd 388168404Spjd zhp->zfs_hdl = hdl; 389168404Spjd 390185029Spjd /* 391185029Spjd * Preserve history log string. 392185029Spjd * any changes performed here will be 393185029Spjd * logged as an internal event. 394185029Spjd */ 395185029Spjd logstr = zhp->zfs_hdl->libzfs_log_str; 396185029Spjd zhp->zfs_hdl->libzfs_log_str = NULL; 397168404Spjdtop: 398168404Spjd (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 399168404Spjd 400168404Spjd if (get_stats(zhp) != 0) { 401185029Spjd zhp->zfs_hdl->libzfs_log_str = logstr; 402168404Spjd free(zhp); 403168404Spjd return (NULL); 404168404Spjd } 405168404Spjd 406168404Spjd if (zhp->zfs_dmustats.dds_inconsistent) { 407168404Spjd zfs_cmd_t zc = { 0 }; 408168404Spjd 409168404Spjd /* 410168404Spjd * If it is dds_inconsistent, then we've caught it in 411168404Spjd * the middle of a 'zfs receive' or 'zfs destroy', and 412168404Spjd * it is inconsistent from the ZPL's point of view, so 413168404Spjd * can't be mounted. However, it could also be that we 414168404Spjd * have crashed in the middle of one of those 415168404Spjd * operations, in which case we need to get rid of the 416168404Spjd * inconsistent state. We do that by either rolling 417168404Spjd * back to the previous snapshot (which will fail if 418168404Spjd * there is none), or destroying the filesystem. Note 419168404Spjd * that if we are still in the middle of an active 420168404Spjd * 'receive' or 'destroy', then the rollback and destroy 421168404Spjd * will fail with EBUSY and we will drive on as usual. 422168404Spjd */ 423168404Spjd 424168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 425168404Spjd 426168404Spjd if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) { 427168404Spjd (void) zvol_remove_link(hdl, zhp->zfs_name); 428168404Spjd zc.zc_objset_type = DMU_OST_ZVOL; 429168404Spjd } else { 430168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 431168404Spjd } 432168404Spjd 433168404Spjd /* 434185029Spjd * If we can successfully destroy it, pretend that it 435168404Spjd * never existed. 436168404Spjd */ 437168404Spjd if (ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc) == 0) { 438185029Spjd zhp->zfs_hdl->libzfs_log_str = logstr; 439168404Spjd free(zhp); 440168404Spjd errno = ENOENT; 441168404Spjd return (NULL); 442168404Spjd } 443185029Spjd /* If we can successfully roll it back, reget the stats */ 444185029Spjd if (ioctl(hdl->libzfs_fd, ZFS_IOC_ROLLBACK, &zc) == 0) 445185029Spjd goto top; 446168404Spjd } 447168404Spjd 448168404Spjd /* 449168404Spjd * We've managed to open the dataset and gather statistics. Determine 450168404Spjd * the high-level type. 451168404Spjd */ 452168404Spjd if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 453168404Spjd zhp->zfs_head_type = ZFS_TYPE_VOLUME; 454168404Spjd else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 455168404Spjd zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 456168404Spjd else 457168404Spjd abort(); 458168404Spjd 459168404Spjd if (zhp->zfs_dmustats.dds_is_snapshot) 460168404Spjd zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 461168404Spjd else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 462168404Spjd zhp->zfs_type = ZFS_TYPE_VOLUME; 463168404Spjd else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 464168404Spjd zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 465168404Spjd else 466168404Spjd abort(); /* we should never see any other types */ 467168404Spjd 468185029Spjd zhp->zfs_hdl->libzfs_log_str = logstr; 469185029Spjd zhp->zpool_hdl = zpool_handle(zhp); 470168404Spjd return (zhp); 471168404Spjd} 472168404Spjd 473168404Spjd/* 474168404Spjd * Opens the given snapshot, filesystem, or volume. The 'types' 475168404Spjd * argument is a mask of acceptable types. The function will print an 476168404Spjd * appropriate error message and return NULL if it can't be opened. 477168404Spjd */ 478168404Spjdzfs_handle_t * 479168404Spjdzfs_open(libzfs_handle_t *hdl, const char *path, int types) 480168404Spjd{ 481168404Spjd zfs_handle_t *zhp; 482168404Spjd char errbuf[1024]; 483168404Spjd 484168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 485168404Spjd dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 486168404Spjd 487168404Spjd /* 488168404Spjd * Validate the name before we even try to open it. 489168404Spjd */ 490185029Spjd if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 491168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 492168404Spjd "invalid dataset name")); 493168404Spjd (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 494168404Spjd return (NULL); 495168404Spjd } 496168404Spjd 497168404Spjd /* 498168404Spjd * Try to get stats for the dataset, which will tell us if it exists. 499168404Spjd */ 500168404Spjd errno = 0; 501168404Spjd if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 502168404Spjd (void) zfs_standard_error(hdl, errno, errbuf); 503168404Spjd return (NULL); 504168404Spjd } 505168404Spjd 506168404Spjd if (!(types & zhp->zfs_type)) { 507168404Spjd (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 508168404Spjd zfs_close(zhp); 509168404Spjd return (NULL); 510168404Spjd } 511168404Spjd 512168404Spjd return (zhp); 513168404Spjd} 514168404Spjd 515168404Spjd/* 516168404Spjd * Release a ZFS handle. Nothing to do but free the associated memory. 517168404Spjd */ 518168404Spjdvoid 519168404Spjdzfs_close(zfs_handle_t *zhp) 520168404Spjd{ 521168404Spjd if (zhp->zfs_mntopts) 522168404Spjd free(zhp->zfs_mntopts); 523168404Spjd nvlist_free(zhp->zfs_props); 524168404Spjd nvlist_free(zhp->zfs_user_props); 525168404Spjd free(zhp); 526168404Spjd} 527168404Spjd 528185029Spjdint 529185029Spjdzfs_spa_version(zfs_handle_t *zhp, int *spa_version) 530168404Spjd{ 531185029Spjd zpool_handle_t *zpool_handle = zhp->zpool_hdl; 532168404Spjd 533185029Spjd if (zpool_handle == NULL) 534168404Spjd return (-1); 535168404Spjd 536185029Spjd *spa_version = zpool_get_prop_int(zpool_handle, 537185029Spjd ZPOOL_PROP_VERSION, NULL); 538168404Spjd return (0); 539168404Spjd} 540168404Spjd 541168404Spjd/* 542185029Spjd * The choice of reservation property depends on the SPA version. 543168404Spjd */ 544168404Spjdstatic int 545185029Spjdzfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 546168404Spjd{ 547185029Spjd int spa_version; 548168404Spjd 549185029Spjd if (zfs_spa_version(zhp, &spa_version) < 0) 550168404Spjd return (-1); 551168404Spjd 552185029Spjd if (spa_version >= SPA_VERSION_REFRESERVATION) 553185029Spjd *resv_prop = ZFS_PROP_REFRESERVATION; 554185029Spjd else 555185029Spjd *resv_prop = ZFS_PROP_RESERVATION; 556168404Spjd 557168404Spjd return (0); 558168404Spjd} 559168404Spjd 560168404Spjd/* 561168404Spjd * Given an nvlist of properties to set, validates that they are correct, and 562168404Spjd * parses any numeric properties (index, boolean, etc) if they are specified as 563168404Spjd * strings. 564168404Spjd */ 565168404Spjdnvlist_t * 566185029Spjdzfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 567185029Spjd uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 568168404Spjd{ 569168404Spjd nvpair_t *elem; 570168404Spjd uint64_t intval; 571168404Spjd char *strval; 572185029Spjd zfs_prop_t prop; 573168404Spjd nvlist_t *ret; 574185029Spjd int chosen_normal = -1; 575185029Spjd int chosen_utf = -1; 576168404Spjd 577168404Spjd if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 578168404Spjd (void) no_memory(hdl); 579168404Spjd return (NULL); 580168404Spjd } 581168404Spjd 582168404Spjd elem = NULL; 583168404Spjd while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 584185029Spjd const char *propname = nvpair_name(elem); 585168404Spjd 586168404Spjd /* 587168404Spjd * Make sure this property is valid and applies to this type. 588168404Spjd */ 589185029Spjd if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 590185029Spjd if (!zfs_prop_user(propname)) { 591168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 592185029Spjd "invalid property '%s'"), propname); 593168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 594168404Spjd goto error; 595185029Spjd } 596168404Spjd 597185029Spjd /* 598185029Spjd * If this is a user property, make sure it's a 599185029Spjd * string, and that it's less than ZAP_MAXNAMELEN. 600185029Spjd */ 601185029Spjd if (nvpair_type(elem) != DATA_TYPE_STRING) { 602185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 603185029Spjd "'%s' must be a string"), propname); 604185029Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 605185029Spjd goto error; 606168404Spjd } 607168404Spjd 608185029Spjd if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 609185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 610185029Spjd "property name '%s' is too long"), 611185029Spjd propname); 612185029Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 613185029Spjd goto error; 614185029Spjd } 615185029Spjd 616168404Spjd (void) nvpair_value_string(elem, &strval); 617168404Spjd if (nvlist_add_string(ret, propname, strval) != 0) { 618168404Spjd (void) no_memory(hdl); 619168404Spjd goto error; 620168404Spjd } 621168404Spjd continue; 622168404Spjd } 623168404Spjd 624185029Spjd if (type == ZFS_TYPE_SNAPSHOT) { 625185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 626185029Spjd "this property can not be modified for snapshots")); 627185029Spjd (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 628185029Spjd goto error; 629185029Spjd } 630168404Spjd 631168404Spjd if (!zfs_prop_valid_for_type(prop, type)) { 632168404Spjd zfs_error_aux(hdl, 633168404Spjd dgettext(TEXT_DOMAIN, "'%s' does not " 634168404Spjd "apply to datasets of this type"), propname); 635168404Spjd (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 636168404Spjd goto error; 637168404Spjd } 638168404Spjd 639168404Spjd if (zfs_prop_readonly(prop) && 640185029Spjd (!zfs_prop_setonce(prop) || zhp != NULL)) { 641168404Spjd zfs_error_aux(hdl, 642168404Spjd dgettext(TEXT_DOMAIN, "'%s' is readonly"), 643168404Spjd propname); 644168404Spjd (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 645168404Spjd goto error; 646168404Spjd } 647168404Spjd 648185029Spjd if (zprop_parse_value(hdl, elem, prop, type, ret, 649185029Spjd &strval, &intval, errbuf) != 0) 650185029Spjd goto error; 651185029Spjd 652168404Spjd /* 653185029Spjd * Perform some additional checks for specific properties. 654168404Spjd */ 655185029Spjd switch (prop) { 656185029Spjd case ZFS_PROP_VERSION: 657185029Spjd { 658185029Spjd int version; 659168404Spjd 660185029Spjd if (zhp == NULL) 661185029Spjd break; 662185029Spjd version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 663185029Spjd if (intval < version) { 664168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 665185029Spjd "Can not downgrade; already at version %u"), 666185029Spjd version); 667168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 668168404Spjd goto error; 669168404Spjd } 670168404Spjd break; 671168404Spjd } 672168404Spjd 673168404Spjd case ZFS_PROP_RECORDSIZE: 674168404Spjd case ZFS_PROP_VOLBLOCKSIZE: 675168404Spjd /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ 676168404Spjd if (intval < SPA_MINBLOCKSIZE || 677168404Spjd intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { 678168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 679168404Spjd "'%s' must be power of 2 from %u " 680168404Spjd "to %uk"), propname, 681168404Spjd (uint_t)SPA_MINBLOCKSIZE, 682168404Spjd (uint_t)SPA_MAXBLOCKSIZE >> 10); 683168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 684168404Spjd goto error; 685168404Spjd } 686168404Spjd break; 687168404Spjd 688168404Spjd case ZFS_PROP_SHAREISCSI: 689168404Spjd if (strcmp(strval, "off") != 0 && 690168404Spjd strcmp(strval, "on") != 0 && 691168404Spjd strcmp(strval, "type=disk") != 0) { 692168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 693168404Spjd "'%s' must be 'on', 'off', or 'type=disk'"), 694168404Spjd propname); 695168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 696168404Spjd goto error; 697168404Spjd } 698168404Spjd 699168404Spjd break; 700168404Spjd 701168404Spjd case ZFS_PROP_MOUNTPOINT: 702185029Spjd { 703185029Spjd namecheck_err_t why; 704185029Spjd 705168404Spjd if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 706168404Spjd strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 707168404Spjd break; 708168404Spjd 709185029Spjd if (mountpoint_namecheck(strval, &why)) { 710185029Spjd switch (why) { 711185029Spjd case NAME_ERR_LEADING_SLASH: 712185029Spjd zfs_error_aux(hdl, 713185029Spjd dgettext(TEXT_DOMAIN, 714185029Spjd "'%s' must be an absolute path, " 715185029Spjd "'none', or 'legacy'"), propname); 716185029Spjd break; 717185029Spjd case NAME_ERR_TOOLONG: 718185029Spjd zfs_error_aux(hdl, 719185029Spjd dgettext(TEXT_DOMAIN, 720185029Spjd "component of '%s' is too long"), 721185029Spjd propname); 722185029Spjd break; 723185029Spjd } 724168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 725168404Spjd goto error; 726168404Spjd } 727185029Spjd } 728185029Spjd 729168404Spjd /*FALLTHRU*/ 730168404Spjd 731185029Spjd case ZFS_PROP_SHARESMB: 732168404Spjd case ZFS_PROP_SHARENFS: 733168404Spjd /* 734185029Spjd * For the mountpoint and sharenfs or sharesmb 735185029Spjd * properties, check if it can be set in a 736185029Spjd * global/non-global zone based on 737168404Spjd * the zoned property value: 738168404Spjd * 739168404Spjd * global zone non-global zone 740168404Spjd * -------------------------------------------------- 741168404Spjd * zoned=on mountpoint (no) mountpoint (yes) 742168404Spjd * sharenfs (no) sharenfs (no) 743185029Spjd * sharesmb (no) sharesmb (no) 744168404Spjd * 745168404Spjd * zoned=off mountpoint (yes) N/A 746168404Spjd * sharenfs (yes) 747185029Spjd * sharesmb (yes) 748168404Spjd */ 749168404Spjd if (zoned) { 750168404Spjd if (getzoneid() == GLOBAL_ZONEID) { 751168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 752168404Spjd "'%s' cannot be set on " 753168404Spjd "dataset in a non-global zone"), 754168404Spjd propname); 755168404Spjd (void) zfs_error(hdl, EZFS_ZONED, 756168404Spjd errbuf); 757168404Spjd goto error; 758185029Spjd } else if (prop == ZFS_PROP_SHARENFS || 759185029Spjd prop == ZFS_PROP_SHARESMB) { 760168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 761168404Spjd "'%s' cannot be set in " 762168404Spjd "a non-global zone"), propname); 763168404Spjd (void) zfs_error(hdl, EZFS_ZONED, 764168404Spjd errbuf); 765168404Spjd goto error; 766168404Spjd } 767168404Spjd } else if (getzoneid() != GLOBAL_ZONEID) { 768168404Spjd /* 769168404Spjd * If zoned property is 'off', this must be in 770168404Spjd * a globle zone. If not, something is wrong. 771168404Spjd */ 772168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 773168404Spjd "'%s' cannot be set while dataset " 774168404Spjd "'zoned' property is set"), propname); 775168404Spjd (void) zfs_error(hdl, EZFS_ZONED, errbuf); 776168404Spjd goto error; 777168404Spjd } 778168404Spjd 779168404Spjd /* 780185029Spjd * At this point, it is legitimate to set the 781185029Spjd * property. Now we want to make sure that the 782185029Spjd * property value is valid if it is sharenfs. 783168404Spjd */ 784185029Spjd if ((prop == ZFS_PROP_SHARENFS || 785185029Spjd prop == ZFS_PROP_SHARESMB) && 786185029Spjd strcmp(strval, "on") != 0 && 787185029Spjd strcmp(strval, "off") != 0) { 788185029Spjd zfs_share_proto_t proto; 789168404Spjd 790185029Spjd if (prop == ZFS_PROP_SHARESMB) 791185029Spjd proto = PROTO_SMB; 792185029Spjd else 793185029Spjd proto = PROTO_NFS; 794185029Spjd 795185029Spjd /* 796185029Spjd * Must be an valid sharing protocol 797185029Spjd * option string so init the libshare 798185029Spjd * in order to enable the parser and 799185029Spjd * then parse the options. We use the 800185029Spjd * control API since we don't care about 801185029Spjd * the current configuration and don't 802185029Spjd * want the overhead of loading it 803185029Spjd * until we actually do something. 804185029Spjd */ 805185029Spjd 806185029Spjd if (zfs_init_libshare(hdl, 807185029Spjd SA_INIT_CONTROL_API) != SA_OK) { 808185029Spjd /* 809185029Spjd * An error occurred so we can't do 810185029Spjd * anything 811185029Spjd */ 812185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 813185029Spjd "'%s' cannot be set: problem " 814185029Spjd "in share initialization"), 815185029Spjd propname); 816185029Spjd (void) zfs_error(hdl, EZFS_BADPROP, 817185029Spjd errbuf); 818185029Spjd goto error; 819185029Spjd } 820185029Spjd 821185029Spjd if (zfs_parse_options(strval, proto) != SA_OK) { 822185029Spjd /* 823185029Spjd * There was an error in parsing so 824185029Spjd * deal with it by issuing an error 825185029Spjd * message and leaving after 826185029Spjd * uninitializing the the libshare 827185029Spjd * interface. 828185029Spjd */ 829185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 830185029Spjd "'%s' cannot be set to invalid " 831185029Spjd "options"), propname); 832185029Spjd (void) zfs_error(hdl, EZFS_BADPROP, 833185029Spjd errbuf); 834185029Spjd zfs_uninit_libshare(hdl); 835185029Spjd goto error; 836185029Spjd } 837185029Spjd zfs_uninit_libshare(hdl); 838168404Spjd } 839185029Spjd 840168404Spjd break; 841185029Spjd case ZFS_PROP_UTF8ONLY: 842185029Spjd chosen_utf = (int)intval; 843185029Spjd break; 844185029Spjd case ZFS_PROP_NORMALIZE: 845185029Spjd chosen_normal = (int)intval; 846185029Spjd break; 847168404Spjd } 848168404Spjd 849168404Spjd /* 850168404Spjd * For changes to existing volumes, we have some additional 851168404Spjd * checks to enforce. 852168404Spjd */ 853168404Spjd if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 854168404Spjd uint64_t volsize = zfs_prop_get_int(zhp, 855168404Spjd ZFS_PROP_VOLSIZE); 856168404Spjd uint64_t blocksize = zfs_prop_get_int(zhp, 857168404Spjd ZFS_PROP_VOLBLOCKSIZE); 858168404Spjd char buf[64]; 859168404Spjd 860168404Spjd switch (prop) { 861168404Spjd case ZFS_PROP_RESERVATION: 862185029Spjd case ZFS_PROP_REFRESERVATION: 863168404Spjd if (intval > volsize) { 864168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 865168404Spjd "'%s' is greater than current " 866168404Spjd "volume size"), propname); 867168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, 868168404Spjd errbuf); 869168404Spjd goto error; 870168404Spjd } 871168404Spjd break; 872168404Spjd 873168404Spjd case ZFS_PROP_VOLSIZE: 874168404Spjd if (intval % blocksize != 0) { 875168404Spjd zfs_nicenum(blocksize, buf, 876168404Spjd sizeof (buf)); 877168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 878168404Spjd "'%s' must be a multiple of " 879168404Spjd "volume block size (%s)"), 880168404Spjd propname, buf); 881168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, 882168404Spjd errbuf); 883168404Spjd goto error; 884168404Spjd } 885168404Spjd 886168404Spjd if (intval == 0) { 887168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 888168404Spjd "'%s' cannot be zero"), 889168404Spjd propname); 890168404Spjd (void) zfs_error(hdl, EZFS_BADPROP, 891168404Spjd errbuf); 892168404Spjd goto error; 893168404Spjd } 894168404Spjd break; 895168404Spjd } 896168404Spjd } 897168404Spjd } 898168404Spjd 899168404Spjd /* 900185029Spjd * If normalization was chosen, but no UTF8 choice was made, 901185029Spjd * enforce rejection of non-UTF8 names. 902185029Spjd * 903185029Spjd * If normalization was chosen, but rejecting non-UTF8 names 904185029Spjd * was explicitly not chosen, it is an error. 905185029Spjd */ 906185029Spjd if (chosen_normal > 0 && chosen_utf < 0) { 907185029Spjd if (nvlist_add_uint64(ret, 908185029Spjd zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 909185029Spjd (void) no_memory(hdl); 910185029Spjd goto error; 911185029Spjd } 912185029Spjd } else if (chosen_normal > 0 && chosen_utf == 0) { 913185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 914185029Spjd "'%s' must be set 'on' if normalization chosen"), 915185029Spjd zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 916185029Spjd (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 917185029Spjd goto error; 918185029Spjd } 919185029Spjd 920185029Spjd /* 921168404Spjd * If this is an existing volume, and someone is setting the volsize, 922168404Spjd * make sure that it matches the reservation, or add it if necessary. 923168404Spjd */ 924168404Spjd if (zhp != NULL && type == ZFS_TYPE_VOLUME && 925168404Spjd nvlist_lookup_uint64(ret, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 926168404Spjd &intval) == 0) { 927168404Spjd uint64_t old_volsize = zfs_prop_get_int(zhp, 928168404Spjd ZFS_PROP_VOLSIZE); 929185029Spjd uint64_t old_reservation; 930168404Spjd uint64_t new_reservation; 931185029Spjd zfs_prop_t resv_prop; 932168404Spjd 933185029Spjd if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 934185029Spjd goto error; 935185029Spjd old_reservation = zfs_prop_get_int(zhp, resv_prop); 936185029Spjd 937168404Spjd if (old_volsize == old_reservation && 938185029Spjd nvlist_lookup_uint64(ret, zfs_prop_to_name(resv_prop), 939168404Spjd &new_reservation) != 0) { 940168404Spjd if (nvlist_add_uint64(ret, 941185029Spjd zfs_prop_to_name(resv_prop), intval) != 0) { 942168404Spjd (void) no_memory(hdl); 943168404Spjd goto error; 944168404Spjd } 945168404Spjd } 946168404Spjd } 947168404Spjd return (ret); 948168404Spjd 949168404Spjderror: 950168404Spjd nvlist_free(ret); 951168404Spjd return (NULL); 952168404Spjd} 953168404Spjd 954185029Spjdstatic int 955185029Spjdzfs_get_perm_who(const char *who, zfs_deleg_who_type_t *who_type, 956185029Spjd uint64_t *ret_who) 957185029Spjd{ 958185029Spjd struct passwd *pwd; 959185029Spjd struct group *grp; 960185029Spjd uid_t id; 961185029Spjd 962185029Spjd if (*who_type == ZFS_DELEG_EVERYONE || *who_type == ZFS_DELEG_CREATE || 963185029Spjd *who_type == ZFS_DELEG_NAMED_SET) { 964185029Spjd *ret_who = -1; 965185029Spjd return (0); 966185029Spjd } 967185029Spjd if (who == NULL && !(*who_type == ZFS_DELEG_EVERYONE)) 968185029Spjd return (EZFS_BADWHO); 969185029Spjd 970185029Spjd if (*who_type == ZFS_DELEG_WHO_UNKNOWN && 971185029Spjd strcmp(who, "everyone") == 0) { 972185029Spjd *ret_who = -1; 973185029Spjd *who_type = ZFS_DELEG_EVERYONE; 974185029Spjd return (0); 975185029Spjd } 976185029Spjd 977185029Spjd pwd = getpwnam(who); 978185029Spjd grp = getgrnam(who); 979185029Spjd 980185029Spjd if ((*who_type == ZFS_DELEG_USER) && pwd) { 981185029Spjd *ret_who = pwd->pw_uid; 982185029Spjd } else if ((*who_type == ZFS_DELEG_GROUP) && grp) { 983185029Spjd *ret_who = grp->gr_gid; 984185029Spjd } else if (pwd) { 985185029Spjd *ret_who = pwd->pw_uid; 986185029Spjd *who_type = ZFS_DELEG_USER; 987185029Spjd } else if (grp) { 988185029Spjd *ret_who = grp->gr_gid; 989185029Spjd *who_type = ZFS_DELEG_GROUP; 990185029Spjd } else { 991185029Spjd char *end; 992185029Spjd 993185029Spjd id = strtol(who, &end, 10); 994185029Spjd if (errno != 0 || *end != '\0') { 995185029Spjd return (EZFS_BADWHO); 996185029Spjd } else { 997185029Spjd *ret_who = id; 998185029Spjd if (*who_type == ZFS_DELEG_WHO_UNKNOWN) 999185029Spjd *who_type = ZFS_DELEG_USER; 1000185029Spjd } 1001185029Spjd } 1002185029Spjd 1003185029Spjd return (0); 1004185029Spjd} 1005185029Spjd 1006185029Spjdstatic void 1007185029Spjdzfs_perms_add_to_nvlist(nvlist_t *who_nvp, char *name, nvlist_t *perms_nvp) 1008185029Spjd{ 1009185029Spjd if (perms_nvp != NULL) { 1010185029Spjd verify(nvlist_add_nvlist(who_nvp, 1011185029Spjd name, perms_nvp) == 0); 1012185029Spjd } else { 1013185029Spjd verify(nvlist_add_boolean(who_nvp, name) == 0); 1014185029Spjd } 1015185029Spjd} 1016185029Spjd 1017185029Spjdstatic void 1018185029Spjdhelper(zfs_deleg_who_type_t who_type, uint64_t whoid, char *whostr, 1019185029Spjd zfs_deleg_inherit_t inherit, nvlist_t *who_nvp, nvlist_t *perms_nvp, 1020185029Spjd nvlist_t *sets_nvp) 1021185029Spjd{ 1022185029Spjd boolean_t do_perms, do_sets; 1023185029Spjd char name[ZFS_MAX_DELEG_NAME]; 1024185029Spjd 1025185029Spjd do_perms = (nvlist_next_nvpair(perms_nvp, NULL) != NULL); 1026185029Spjd do_sets = (nvlist_next_nvpair(sets_nvp, NULL) != NULL); 1027185029Spjd 1028185029Spjd if (!do_perms && !do_sets) 1029185029Spjd do_perms = do_sets = B_TRUE; 1030185029Spjd 1031185029Spjd if (do_perms) { 1032185029Spjd zfs_deleg_whokey(name, who_type, inherit, 1033185029Spjd (who_type == ZFS_DELEG_NAMED_SET) ? 1034185029Spjd whostr : (void *)&whoid); 1035185029Spjd zfs_perms_add_to_nvlist(who_nvp, name, perms_nvp); 1036185029Spjd } 1037185029Spjd if (do_sets) { 1038185029Spjd zfs_deleg_whokey(name, toupper(who_type), inherit, 1039185029Spjd (who_type == ZFS_DELEG_NAMED_SET) ? 1040185029Spjd whostr : (void *)&whoid); 1041185029Spjd zfs_perms_add_to_nvlist(who_nvp, name, sets_nvp); 1042185029Spjd } 1043185029Spjd} 1044185029Spjd 1045185029Spjdstatic void 1046185029Spjdzfs_perms_add_who_nvlist(nvlist_t *who_nvp, uint64_t whoid, void *whostr, 1047185029Spjd nvlist_t *perms_nvp, nvlist_t *sets_nvp, 1048185029Spjd zfs_deleg_who_type_t who_type, zfs_deleg_inherit_t inherit) 1049185029Spjd{ 1050185029Spjd if (who_type == ZFS_DELEG_NAMED_SET || who_type == ZFS_DELEG_CREATE) { 1051185029Spjd helper(who_type, whoid, whostr, 0, 1052185029Spjd who_nvp, perms_nvp, sets_nvp); 1053185029Spjd } else { 1054185029Spjd if (inherit & ZFS_DELEG_PERM_LOCAL) { 1055185029Spjd helper(who_type, whoid, whostr, ZFS_DELEG_LOCAL, 1056185029Spjd who_nvp, perms_nvp, sets_nvp); 1057185029Spjd } 1058185029Spjd if (inherit & ZFS_DELEG_PERM_DESCENDENT) { 1059185029Spjd helper(who_type, whoid, whostr, ZFS_DELEG_DESCENDENT, 1060185029Spjd who_nvp, perms_nvp, sets_nvp); 1061185029Spjd } 1062185029Spjd } 1063185029Spjd} 1064185029Spjd 1065168404Spjd/* 1066185029Spjd * Construct nvlist to pass down to kernel for setting/removing permissions. 1067185029Spjd * 1068185029Spjd * The nvlist is constructed as a series of nvpairs with an optional embedded 1069185029Spjd * nvlist of permissions to remove or set. The topmost nvpairs are the actual 1070185029Spjd * base attribute named stored in the dsl. 1071185029Spjd * Arguments: 1072185029Spjd * 1073185029Spjd * whostr: is a comma separated list of users, groups, or a single set name. 1074185029Spjd * whostr may be null for everyone or create perms. 1075185029Spjd * who_type: is the type of entry in whostr. Typically this will be 1076185029Spjd * ZFS_DELEG_WHO_UNKNOWN. 1077185029Spjd * perms: common separated list of permissions. May be null if user 1078185029Spjd * is requested to remove permissions by who. 1079185029Spjd * inherit: Specifies the inheritance of the permissions. Will be either 1080185029Spjd * ZFS_DELEG_PERM_LOCAL and/or ZFS_DELEG_PERM_DESCENDENT. 1081185029Spjd * nvp The constructed nvlist to pass to zfs_perm_set(). 1082185029Spjd * The output nvp will look something like this. 1083185029Spjd * ul$1234 -> {create ; destroy } 1084185029Spjd * Ul$1234 -> { @myset } 1085185029Spjd * s-$@myset - { snapshot; checksum; compression } 1086185029Spjd */ 1087185029Spjdint 1088185029Spjdzfs_build_perms(zfs_handle_t *zhp, char *whostr, char *perms, 1089185029Spjd zfs_deleg_who_type_t who_type, zfs_deleg_inherit_t inherit, nvlist_t **nvp) 1090185029Spjd{ 1091185029Spjd nvlist_t *who_nvp; 1092185029Spjd nvlist_t *perms_nvp = NULL; 1093185029Spjd nvlist_t *sets_nvp = NULL; 1094185029Spjd char errbuf[1024]; 1095185029Spjd char *who_tok, *perm; 1096185029Spjd int error; 1097185029Spjd 1098185029Spjd *nvp = NULL; 1099185029Spjd 1100185029Spjd if (perms) { 1101185029Spjd if ((error = nvlist_alloc(&perms_nvp, 1102185029Spjd NV_UNIQUE_NAME, 0)) != 0) { 1103185029Spjd return (1); 1104185029Spjd } 1105185029Spjd if ((error = nvlist_alloc(&sets_nvp, 1106185029Spjd NV_UNIQUE_NAME, 0)) != 0) { 1107185029Spjd nvlist_free(perms_nvp); 1108185029Spjd return (1); 1109185029Spjd } 1110185029Spjd } 1111185029Spjd 1112185029Spjd if ((error = nvlist_alloc(&who_nvp, NV_UNIQUE_NAME, 0)) != 0) { 1113185029Spjd if (perms_nvp) 1114185029Spjd nvlist_free(perms_nvp); 1115185029Spjd if (sets_nvp) 1116185029Spjd nvlist_free(sets_nvp); 1117185029Spjd return (1); 1118185029Spjd } 1119185029Spjd 1120185029Spjd if (who_type == ZFS_DELEG_NAMED_SET) { 1121185029Spjd namecheck_err_t why; 1122185029Spjd char what; 1123185029Spjd 1124185029Spjd if ((error = permset_namecheck(whostr, &why, &what)) != 0) { 1125185029Spjd nvlist_free(who_nvp); 1126185029Spjd if (perms_nvp) 1127185029Spjd nvlist_free(perms_nvp); 1128185029Spjd if (sets_nvp) 1129185029Spjd nvlist_free(sets_nvp); 1130185029Spjd 1131185029Spjd switch (why) { 1132185029Spjd case NAME_ERR_NO_AT: 1133185029Spjd zfs_error_aux(zhp->zfs_hdl, 1134185029Spjd dgettext(TEXT_DOMAIN, 1135185029Spjd "set definition must begin with an '@' " 1136185029Spjd "character")); 1137185029Spjd } 1138185029Spjd return (zfs_error(zhp->zfs_hdl, 1139185029Spjd EZFS_BADPERMSET, whostr)); 1140185029Spjd } 1141185029Spjd } 1142185029Spjd 1143185029Spjd /* 1144185029Spjd * Build up nvlist(s) of permissions. Two nvlists are maintained. 1145185029Spjd * The first nvlist perms_nvp will have normal permissions and the 1146185029Spjd * other sets_nvp will have only permssion set names in it. 1147185029Spjd */ 1148185029Spjd for (perm = strtok(perms, ","); perm; perm = strtok(NULL, ",")) { 1149185029Spjd const char *perm_canonical = zfs_deleg_canonicalize_perm(perm); 1150185029Spjd 1151185029Spjd if (perm_canonical) { 1152185029Spjd verify(nvlist_add_boolean(perms_nvp, 1153185029Spjd perm_canonical) == 0); 1154185029Spjd } else if (perm[0] == '@') { 1155185029Spjd verify(nvlist_add_boolean(sets_nvp, perm) == 0); 1156185029Spjd } else { 1157185029Spjd nvlist_free(who_nvp); 1158185029Spjd nvlist_free(perms_nvp); 1159185029Spjd nvlist_free(sets_nvp); 1160185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADPERM, perm)); 1161185029Spjd } 1162185029Spjd } 1163185029Spjd 1164185029Spjd if (whostr && who_type != ZFS_DELEG_CREATE) { 1165185029Spjd who_tok = strtok(whostr, ","); 1166185029Spjd if (who_tok == NULL) { 1167185029Spjd nvlist_free(who_nvp); 1168185029Spjd if (perms_nvp) 1169185029Spjd nvlist_free(perms_nvp); 1170185029Spjd if (sets_nvp) 1171185029Spjd nvlist_free(sets_nvp); 1172185029Spjd (void) snprintf(errbuf, sizeof (errbuf), 1173185029Spjd dgettext(TEXT_DOMAIN, "Who string is NULL"), 1174185029Spjd whostr); 1175185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADWHO, errbuf)); 1176185029Spjd } 1177185029Spjd } 1178185029Spjd 1179185029Spjd /* 1180185029Spjd * Now create the nvlist(s) 1181185029Spjd */ 1182185029Spjd do { 1183185029Spjd uint64_t who_id; 1184185029Spjd 1185185029Spjd error = zfs_get_perm_who(who_tok, &who_type, 1186185029Spjd &who_id); 1187185029Spjd if (error) { 1188185029Spjd nvlist_free(who_nvp); 1189185029Spjd if (perms_nvp) 1190185029Spjd nvlist_free(perms_nvp); 1191185029Spjd if (sets_nvp) 1192185029Spjd nvlist_free(sets_nvp); 1193185029Spjd (void) snprintf(errbuf, sizeof (errbuf), 1194185029Spjd dgettext(TEXT_DOMAIN, 1195185029Spjd "Unable to determine uid/gid for " 1196185029Spjd "%s "), who_tok); 1197185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADWHO, errbuf)); 1198185029Spjd } 1199185029Spjd 1200185029Spjd /* 1201185029Spjd * add entries for both local and descendent when required 1202185029Spjd */ 1203185029Spjd zfs_perms_add_who_nvlist(who_nvp, who_id, who_tok, 1204185029Spjd perms_nvp, sets_nvp, who_type, inherit); 1205185029Spjd 1206185029Spjd } while (who_tok = strtok(NULL, ",")); 1207185029Spjd *nvp = who_nvp; 1208185029Spjd return (0); 1209185029Spjd} 1210185029Spjd 1211185029Spjdstatic int 1212185029Spjdzfs_perm_set_common(zfs_handle_t *zhp, nvlist_t *nvp, boolean_t unset) 1213185029Spjd{ 1214185029Spjd zfs_cmd_t zc = { 0 }; 1215185029Spjd int error; 1216185029Spjd char errbuf[1024]; 1217185029Spjd 1218185029Spjd (void) snprintf(errbuf, sizeof (errbuf), 1219185029Spjd dgettext(TEXT_DOMAIN, "Cannot update 'allows' for '%s'"), 1220185029Spjd zhp->zfs_name); 1221185029Spjd 1222185029Spjd if (zcmd_write_src_nvlist(zhp->zfs_hdl, &zc, nvp)) 1223185029Spjd return (-1); 1224185029Spjd 1225185029Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1226185029Spjd zc.zc_perm_action = unset; 1227185029Spjd 1228185029Spjd error = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SET_FSACL, &zc); 1229185029Spjd if (error && errno == ENOTSUP) { 1230185029Spjd (void) snprintf(errbuf, sizeof (errbuf), 1231185029Spjd gettext("Pool must be upgraded to use 'allow/unallow'")); 1232185029Spjd zcmd_free_nvlists(&zc); 1233185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADVERSION, errbuf)); 1234185029Spjd } else if (error) { 1235185029Spjd return (zfs_standard_error(zhp->zfs_hdl, errno, errbuf)); 1236185029Spjd } 1237185029Spjd zcmd_free_nvlists(&zc); 1238185029Spjd 1239185029Spjd return (error); 1240185029Spjd} 1241185029Spjd 1242185029Spjdint 1243185029Spjdzfs_perm_set(zfs_handle_t *zhp, nvlist_t *nvp) 1244185029Spjd{ 1245185029Spjd return (zfs_perm_set_common(zhp, nvp, B_FALSE)); 1246185029Spjd} 1247185029Spjd 1248185029Spjdint 1249185029Spjdzfs_perm_remove(zfs_handle_t *zhp, nvlist_t *perms) 1250185029Spjd{ 1251185029Spjd return (zfs_perm_set_common(zhp, perms, B_TRUE)); 1252185029Spjd} 1253185029Spjd 1254185029Spjdstatic int 1255185029Spjdperm_compare(const void *arg1, const void *arg2) 1256185029Spjd{ 1257185029Spjd const zfs_perm_node_t *node1 = arg1; 1258185029Spjd const zfs_perm_node_t *node2 = arg2; 1259185029Spjd int ret; 1260185029Spjd 1261185029Spjd ret = strcmp(node1->z_pname, node2->z_pname); 1262185029Spjd 1263185029Spjd if (ret > 0) 1264185029Spjd return (1); 1265185029Spjd if (ret < 0) 1266185029Spjd return (-1); 1267185029Spjd else 1268185029Spjd return (0); 1269185029Spjd} 1270185029Spjd 1271185029Spjdstatic void 1272185029Spjdzfs_destroy_perm_tree(avl_tree_t *tree) 1273185029Spjd{ 1274185029Spjd zfs_perm_node_t *permnode; 1275185029Spjd void *cookie = NULL; 1276185029Spjd 1277185029Spjd while ((permnode = avl_destroy_nodes(tree, &cookie)) != NULL) 1278185029Spjd free(permnode); 1279185029Spjd avl_destroy(tree); 1280185029Spjd} 1281185029Spjd 1282185029Spjdstatic void 1283185029Spjdzfs_destroy_tree(avl_tree_t *tree) 1284185029Spjd{ 1285185029Spjd zfs_allow_node_t *allownode; 1286185029Spjd void *cookie = NULL; 1287185029Spjd 1288185029Spjd while ((allownode = avl_destroy_nodes(tree, &cookie)) != NULL) { 1289185029Spjd zfs_destroy_perm_tree(&allownode->z_localdescend); 1290185029Spjd zfs_destroy_perm_tree(&allownode->z_local); 1291185029Spjd zfs_destroy_perm_tree(&allownode->z_descend); 1292185029Spjd free(allownode); 1293185029Spjd } 1294185029Spjd avl_destroy(tree); 1295185029Spjd} 1296185029Spjd 1297185029Spjdvoid 1298185029Spjdzfs_free_allows(zfs_allow_t *allow) 1299185029Spjd{ 1300185029Spjd zfs_allow_t *allownext; 1301185029Spjd zfs_allow_t *freeallow; 1302185029Spjd 1303185029Spjd allownext = allow; 1304185029Spjd while (allownext) { 1305185029Spjd zfs_destroy_tree(&allownext->z_sets); 1306185029Spjd zfs_destroy_tree(&allownext->z_crperms); 1307185029Spjd zfs_destroy_tree(&allownext->z_user); 1308185029Spjd zfs_destroy_tree(&allownext->z_group); 1309185029Spjd zfs_destroy_tree(&allownext->z_everyone); 1310185029Spjd freeallow = allownext; 1311185029Spjd allownext = allownext->z_next; 1312185029Spjd free(freeallow); 1313185029Spjd } 1314185029Spjd} 1315185029Spjd 1316185029Spjdstatic zfs_allow_t * 1317185029Spjdzfs_alloc_perm_tree(zfs_handle_t *zhp, zfs_allow_t *prev, char *setpoint) 1318185029Spjd{ 1319185029Spjd zfs_allow_t *ptree; 1320185029Spjd 1321185029Spjd if ((ptree = zfs_alloc(zhp->zfs_hdl, 1322185029Spjd sizeof (zfs_allow_t))) == NULL) { 1323185029Spjd return (NULL); 1324185029Spjd } 1325185029Spjd 1326185029Spjd (void) strlcpy(ptree->z_setpoint, setpoint, sizeof (ptree->z_setpoint)); 1327185029Spjd avl_create(&ptree->z_sets, 1328185029Spjd perm_compare, sizeof (zfs_allow_node_t), 1329185029Spjd offsetof(zfs_allow_node_t, z_node)); 1330185029Spjd avl_create(&ptree->z_crperms, 1331185029Spjd perm_compare, sizeof (zfs_allow_node_t), 1332185029Spjd offsetof(zfs_allow_node_t, z_node)); 1333185029Spjd avl_create(&ptree->z_user, 1334185029Spjd perm_compare, sizeof (zfs_allow_node_t), 1335185029Spjd offsetof(zfs_allow_node_t, z_node)); 1336185029Spjd avl_create(&ptree->z_group, 1337185029Spjd perm_compare, sizeof (zfs_allow_node_t), 1338185029Spjd offsetof(zfs_allow_node_t, z_node)); 1339185029Spjd avl_create(&ptree->z_everyone, 1340185029Spjd perm_compare, sizeof (zfs_allow_node_t), 1341185029Spjd offsetof(zfs_allow_node_t, z_node)); 1342185029Spjd 1343185029Spjd if (prev) 1344185029Spjd prev->z_next = ptree; 1345185029Spjd ptree->z_next = NULL; 1346185029Spjd return (ptree); 1347185029Spjd} 1348185029Spjd 1349185029Spjd/* 1350185029Spjd * Add permissions to the appropriate AVL permission tree. 1351185029Spjd * The appropriate tree may not be the requested tree. 1352185029Spjd * For example if ld indicates a local permission, but 1353185029Spjd * same permission also exists as a descendent permission 1354185029Spjd * then the permission will be removed from the descendent 1355185029Spjd * tree and add the the local+descendent tree. 1356185029Spjd */ 1357185029Spjdstatic int 1358185029Spjdzfs_coalesce_perm(zfs_handle_t *zhp, zfs_allow_node_t *allownode, 1359185029Spjd char *perm, char ld) 1360185029Spjd{ 1361185029Spjd zfs_perm_node_t pnode, *permnode, *permnode2; 1362185029Spjd zfs_perm_node_t *newnode; 1363185029Spjd avl_index_t where, where2; 1364185029Spjd avl_tree_t *tree, *altree; 1365185029Spjd 1366185029Spjd (void) strlcpy(pnode.z_pname, perm, sizeof (pnode.z_pname)); 1367185029Spjd 1368185029Spjd if (ld == ZFS_DELEG_NA) { 1369185029Spjd tree = &allownode->z_localdescend; 1370185029Spjd altree = &allownode->z_descend; 1371185029Spjd } else if (ld == ZFS_DELEG_LOCAL) { 1372185029Spjd tree = &allownode->z_local; 1373185029Spjd altree = &allownode->z_descend; 1374185029Spjd } else { 1375185029Spjd tree = &allownode->z_descend; 1376185029Spjd altree = &allownode->z_local; 1377185029Spjd } 1378185029Spjd permnode = avl_find(tree, &pnode, &where); 1379185029Spjd permnode2 = avl_find(altree, &pnode, &where2); 1380185029Spjd 1381185029Spjd if (permnode2) { 1382185029Spjd avl_remove(altree, permnode2); 1383185029Spjd free(permnode2); 1384185029Spjd if (permnode == NULL) { 1385185029Spjd tree = &allownode->z_localdescend; 1386185029Spjd } 1387185029Spjd } 1388185029Spjd 1389185029Spjd /* 1390185029Spjd * Now insert new permission in either requested location 1391185029Spjd * local/descendent or into ld when perm will exist in both. 1392185029Spjd */ 1393185029Spjd if (permnode == NULL) { 1394185029Spjd if ((newnode = zfs_alloc(zhp->zfs_hdl, 1395185029Spjd sizeof (zfs_perm_node_t))) == NULL) { 1396185029Spjd return (-1); 1397185029Spjd } 1398185029Spjd *newnode = pnode; 1399185029Spjd avl_add(tree, newnode); 1400185029Spjd } 1401185029Spjd return (0); 1402185029Spjd} 1403185029Spjd 1404185029Spjd/* 1405185029Spjd * Uggh, this is going to be a bit complicated. 1406185029Spjd * we have an nvlist coming out of the kernel that 1407185029Spjd * will indicate where the permission is set and then 1408185029Spjd * it will contain allow of the various "who's", and what 1409185029Spjd * their permissions are. To further complicate this 1410185029Spjd * we will then have to coalesce the local,descendent 1411185029Spjd * and local+descendent permissions where appropriate. 1412185029Spjd * The kernel only knows about a permission as being local 1413185029Spjd * or descendent, but not both. 1414185029Spjd * 1415185029Spjd * In order to make this easier for zfs_main to deal with 1416185029Spjd * a series of AVL trees will be used to maintain 1417185029Spjd * all of this, primarily for sorting purposes as well 1418185029Spjd * as the ability to quickly locate a specific entry. 1419185029Spjd * 1420185029Spjd * What we end up with are tree's for sets, create perms, 1421185029Spjd * user, groups and everyone. With each of those trees 1422185029Spjd * we have subtrees for local, descendent and local+descendent 1423185029Spjd * permissions. 1424185029Spjd */ 1425185029Spjdint 1426185029Spjdzfs_perm_get(zfs_handle_t *zhp, zfs_allow_t **zfs_perms) 1427185029Spjd{ 1428185029Spjd zfs_cmd_t zc = { 0 }; 1429185029Spjd int error; 1430185029Spjd nvlist_t *nvlist; 1431185029Spjd nvlist_t *permnv, *sourcenv; 1432185029Spjd nvpair_t *who_pair, *source_pair; 1433185029Spjd nvpair_t *perm_pair; 1434185029Spjd char errbuf[1024]; 1435185029Spjd zfs_allow_t *zallowp, *newallowp; 1436185029Spjd char ld; 1437185029Spjd char *nvpname; 1438185029Spjd uid_t uid; 1439185029Spjd gid_t gid; 1440185029Spjd avl_tree_t *tree; 1441185029Spjd avl_index_t where; 1442185029Spjd 1443185029Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1444185029Spjd 1445185029Spjd if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1446185029Spjd return (-1); 1447185029Spjd 1448185029Spjd while (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 1449185029Spjd if (errno == ENOMEM) { 1450185029Spjd if (zcmd_expand_dst_nvlist(zhp->zfs_hdl, &zc) != 0) { 1451185029Spjd zcmd_free_nvlists(&zc); 1452185029Spjd return (-1); 1453185029Spjd } 1454185029Spjd } else if (errno == ENOTSUP) { 1455185029Spjd zcmd_free_nvlists(&zc); 1456185029Spjd (void) snprintf(errbuf, sizeof (errbuf), 1457185029Spjd gettext("Pool must be upgraded to use 'allow'")); 1458185029Spjd return (zfs_error(zhp->zfs_hdl, 1459185029Spjd EZFS_BADVERSION, errbuf)); 1460185029Spjd } else { 1461185029Spjd zcmd_free_nvlists(&zc); 1462185029Spjd return (-1); 1463185029Spjd } 1464185029Spjd } 1465185029Spjd 1466185029Spjd if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &nvlist) != 0) { 1467185029Spjd zcmd_free_nvlists(&zc); 1468185029Spjd return (-1); 1469185029Spjd } 1470185029Spjd 1471185029Spjd zcmd_free_nvlists(&zc); 1472185029Spjd 1473185029Spjd source_pair = nvlist_next_nvpair(nvlist, NULL); 1474185029Spjd 1475185029Spjd if (source_pair == NULL) { 1476185029Spjd *zfs_perms = NULL; 1477185029Spjd return (0); 1478185029Spjd } 1479185029Spjd 1480185029Spjd *zfs_perms = zfs_alloc_perm_tree(zhp, NULL, nvpair_name(source_pair)); 1481185029Spjd if (*zfs_perms == NULL) { 1482185029Spjd return (0); 1483185029Spjd } 1484185029Spjd 1485185029Spjd zallowp = *zfs_perms; 1486185029Spjd 1487185029Spjd for (;;) { 1488185029Spjd struct passwd *pwd; 1489185029Spjd struct group *grp; 1490185029Spjd zfs_allow_node_t *allownode; 1491185029Spjd zfs_allow_node_t findallownode; 1492185029Spjd zfs_allow_node_t *newallownode; 1493185029Spjd 1494185029Spjd (void) strlcpy(zallowp->z_setpoint, 1495185029Spjd nvpair_name(source_pair), 1496185029Spjd sizeof (zallowp->z_setpoint)); 1497185029Spjd 1498185029Spjd if ((error = nvpair_value_nvlist(source_pair, &sourcenv)) != 0) 1499185029Spjd goto abort; 1500185029Spjd 1501185029Spjd /* 1502185029Spjd * Make sure nvlist is composed correctly 1503185029Spjd */ 1504185029Spjd if (zfs_deleg_verify_nvlist(sourcenv)) { 1505185029Spjd goto abort; 1506185029Spjd } 1507185029Spjd 1508185029Spjd who_pair = nvlist_next_nvpair(sourcenv, NULL); 1509185029Spjd if (who_pair == NULL) { 1510185029Spjd goto abort; 1511185029Spjd } 1512185029Spjd 1513185029Spjd do { 1514185029Spjd error = nvpair_value_nvlist(who_pair, &permnv); 1515185029Spjd if (error) { 1516185029Spjd goto abort; 1517185029Spjd } 1518185029Spjd 1519185029Spjd /* 1520185029Spjd * First build up the key to use 1521185029Spjd * for looking up in the various 1522185029Spjd * who trees. 1523185029Spjd */ 1524185029Spjd ld = nvpair_name(who_pair)[1]; 1525185029Spjd nvpname = nvpair_name(who_pair); 1526185029Spjd switch (nvpair_name(who_pair)[0]) { 1527185029Spjd case ZFS_DELEG_USER: 1528185029Spjd case ZFS_DELEG_USER_SETS: 1529185029Spjd tree = &zallowp->z_user; 1530185029Spjd uid = atol(&nvpname[3]); 1531185029Spjd pwd = getpwuid(uid); 1532185029Spjd (void) snprintf(findallownode.z_key, 1533185029Spjd sizeof (findallownode.z_key), "user %s", 1534185029Spjd (pwd) ? pwd->pw_name : 1535185029Spjd &nvpair_name(who_pair)[3]); 1536185029Spjd break; 1537185029Spjd case ZFS_DELEG_GROUP: 1538185029Spjd case ZFS_DELEG_GROUP_SETS: 1539185029Spjd tree = &zallowp->z_group; 1540185029Spjd gid = atol(&nvpname[3]); 1541185029Spjd grp = getgrgid(gid); 1542185029Spjd (void) snprintf(findallownode.z_key, 1543185029Spjd sizeof (findallownode.z_key), "group %s", 1544185029Spjd (grp) ? grp->gr_name : 1545185029Spjd &nvpair_name(who_pair)[3]); 1546185029Spjd break; 1547185029Spjd case ZFS_DELEG_CREATE: 1548185029Spjd case ZFS_DELEG_CREATE_SETS: 1549185029Spjd tree = &zallowp->z_crperms; 1550185029Spjd (void) strlcpy(findallownode.z_key, "", 1551185029Spjd sizeof (findallownode.z_key)); 1552185029Spjd break; 1553185029Spjd case ZFS_DELEG_EVERYONE: 1554185029Spjd case ZFS_DELEG_EVERYONE_SETS: 1555185029Spjd (void) snprintf(findallownode.z_key, 1556185029Spjd sizeof (findallownode.z_key), "everyone"); 1557185029Spjd tree = &zallowp->z_everyone; 1558185029Spjd break; 1559185029Spjd case ZFS_DELEG_NAMED_SET: 1560185029Spjd case ZFS_DELEG_NAMED_SET_SETS: 1561185029Spjd (void) snprintf(findallownode.z_key, 1562185029Spjd sizeof (findallownode.z_key), "%s", 1563185029Spjd &nvpair_name(who_pair)[3]); 1564185029Spjd tree = &zallowp->z_sets; 1565185029Spjd break; 1566185029Spjd } 1567185029Spjd 1568185029Spjd /* 1569185029Spjd * Place who in tree 1570185029Spjd */ 1571185029Spjd allownode = avl_find(tree, &findallownode, &where); 1572185029Spjd if (allownode == NULL) { 1573185029Spjd if ((newallownode = zfs_alloc(zhp->zfs_hdl, 1574185029Spjd sizeof (zfs_allow_node_t))) == NULL) { 1575185029Spjd goto abort; 1576185029Spjd } 1577185029Spjd avl_create(&newallownode->z_localdescend, 1578185029Spjd perm_compare, 1579185029Spjd sizeof (zfs_perm_node_t), 1580185029Spjd offsetof(zfs_perm_node_t, z_node)); 1581185029Spjd avl_create(&newallownode->z_local, 1582185029Spjd perm_compare, 1583185029Spjd sizeof (zfs_perm_node_t), 1584185029Spjd offsetof(zfs_perm_node_t, z_node)); 1585185029Spjd avl_create(&newallownode->z_descend, 1586185029Spjd perm_compare, 1587185029Spjd sizeof (zfs_perm_node_t), 1588185029Spjd offsetof(zfs_perm_node_t, z_node)); 1589185029Spjd (void) strlcpy(newallownode->z_key, 1590185029Spjd findallownode.z_key, 1591185029Spjd sizeof (findallownode.z_key)); 1592185029Spjd avl_insert(tree, newallownode, where); 1593185029Spjd allownode = newallownode; 1594185029Spjd } 1595185029Spjd 1596185029Spjd /* 1597185029Spjd * Now iterate over the permissions and 1598185029Spjd * place them in the appropriate local, 1599185029Spjd * descendent or local+descendent tree. 1600185029Spjd * 1601185029Spjd * The permissions are added to the tree 1602185029Spjd * via zfs_coalesce_perm(). 1603185029Spjd */ 1604185029Spjd perm_pair = nvlist_next_nvpair(permnv, NULL); 1605185029Spjd if (perm_pair == NULL) 1606185029Spjd goto abort; 1607185029Spjd do { 1608185029Spjd if (zfs_coalesce_perm(zhp, allownode, 1609185029Spjd nvpair_name(perm_pair), ld) != 0) 1610185029Spjd goto abort; 1611185029Spjd } while (perm_pair = nvlist_next_nvpair(permnv, 1612185029Spjd perm_pair)); 1613185029Spjd } while (who_pair = nvlist_next_nvpair(sourcenv, who_pair)); 1614185029Spjd 1615185029Spjd source_pair = nvlist_next_nvpair(nvlist, source_pair); 1616185029Spjd if (source_pair == NULL) 1617185029Spjd break; 1618185029Spjd 1619185029Spjd /* 1620185029Spjd * allocate another node from the link list of 1621185029Spjd * zfs_allow_t structures 1622185029Spjd */ 1623185029Spjd newallowp = zfs_alloc_perm_tree(zhp, zallowp, 1624185029Spjd nvpair_name(source_pair)); 1625185029Spjd if (newallowp == NULL) { 1626185029Spjd goto abort; 1627185029Spjd } 1628185029Spjd zallowp = newallowp; 1629185029Spjd } 1630185029Spjd nvlist_free(nvlist); 1631185029Spjd return (0); 1632185029Spjdabort: 1633185029Spjd zfs_free_allows(*zfs_perms); 1634185029Spjd nvlist_free(nvlist); 1635185029Spjd return (-1); 1636185029Spjd} 1637185029Spjd 1638185029Spjdstatic char * 1639185029Spjdzfs_deleg_perm_note(zfs_deleg_note_t note) 1640185029Spjd{ 1641185029Spjd /* 1642185029Spjd * Don't put newlines on end of lines 1643185029Spjd */ 1644185029Spjd switch (note) { 1645185029Spjd case ZFS_DELEG_NOTE_CREATE: 1646185029Spjd return (dgettext(TEXT_DOMAIN, 1647185029Spjd "Must also have the 'mount' ability")); 1648185029Spjd case ZFS_DELEG_NOTE_DESTROY: 1649185029Spjd return (dgettext(TEXT_DOMAIN, 1650185029Spjd "Must also have the 'mount' ability")); 1651185029Spjd case ZFS_DELEG_NOTE_SNAPSHOT: 1652185029Spjd return (dgettext(TEXT_DOMAIN, 1653185029Spjd "Must also have the 'mount' ability")); 1654185029Spjd case ZFS_DELEG_NOTE_ROLLBACK: 1655185029Spjd return (dgettext(TEXT_DOMAIN, 1656185029Spjd "Must also have the 'mount' ability")); 1657185029Spjd case ZFS_DELEG_NOTE_CLONE: 1658185029Spjd return (dgettext(TEXT_DOMAIN, "Must also have the 'create' " 1659185029Spjd "ability and 'mount'\n" 1660185029Spjd "\t\t\t\tability in the origin file system")); 1661185029Spjd case ZFS_DELEG_NOTE_PROMOTE: 1662185029Spjd return (dgettext(TEXT_DOMAIN, "Must also have the 'mount'\n" 1663185029Spjd "\t\t\t\tand 'promote' ability in the origin file system")); 1664185029Spjd case ZFS_DELEG_NOTE_RENAME: 1665185029Spjd return (dgettext(TEXT_DOMAIN, "Must also have the 'mount' " 1666185029Spjd "and 'create' \n\t\t\t\tability in the new parent")); 1667185029Spjd case ZFS_DELEG_NOTE_RECEIVE: 1668185029Spjd return (dgettext(TEXT_DOMAIN, "Must also have the 'mount'" 1669185029Spjd " and 'create' ability")); 1670185029Spjd case ZFS_DELEG_NOTE_USERPROP: 1671185029Spjd return (dgettext(TEXT_DOMAIN, 1672185029Spjd "Allows changing any user property")); 1673185029Spjd case ZFS_DELEG_NOTE_ALLOW: 1674185029Spjd return (dgettext(TEXT_DOMAIN, 1675185029Spjd "Must also have the permission that is being\n" 1676185029Spjd "\t\t\t\tallowed")); 1677185029Spjd case ZFS_DELEG_NOTE_MOUNT: 1678185029Spjd return (dgettext(TEXT_DOMAIN, 1679185029Spjd "Allows mount/umount of ZFS datasets")); 1680185029Spjd case ZFS_DELEG_NOTE_SHARE: 1681185029Spjd return (dgettext(TEXT_DOMAIN, 1682185029Spjd "Allows sharing file systems over NFS or SMB\n" 1683185029Spjd "\t\t\t\tprotocols")); 1684185029Spjd case ZFS_DELEG_NOTE_NONE: 1685185029Spjd default: 1686185029Spjd return (dgettext(TEXT_DOMAIN, "")); 1687185029Spjd } 1688185029Spjd} 1689185029Spjd 1690185029Spjdtypedef enum { 1691185029Spjd ZFS_DELEG_SUBCOMMAND, 1692185029Spjd ZFS_DELEG_PROP, 1693185029Spjd ZFS_DELEG_OTHER 1694185029Spjd} zfs_deleg_perm_type_t; 1695185029Spjd 1696185029Spjd/* 1697185029Spjd * is the permission a subcommand or other? 1698185029Spjd */ 1699185029Spjdzfs_deleg_perm_type_t 1700185029Spjdzfs_deleg_perm_type(const char *perm) 1701185029Spjd{ 1702185029Spjd if (strcmp(perm, "userprop") == 0) 1703185029Spjd return (ZFS_DELEG_OTHER); 1704185029Spjd else 1705185029Spjd return (ZFS_DELEG_SUBCOMMAND); 1706185029Spjd} 1707185029Spjd 1708185029Spjdstatic char * 1709185029Spjdzfs_deleg_perm_type_str(zfs_deleg_perm_type_t type) 1710185029Spjd{ 1711185029Spjd switch (type) { 1712185029Spjd case ZFS_DELEG_SUBCOMMAND: 1713185029Spjd return (dgettext(TEXT_DOMAIN, "subcommand")); 1714185029Spjd case ZFS_DELEG_PROP: 1715185029Spjd return (dgettext(TEXT_DOMAIN, "property")); 1716185029Spjd case ZFS_DELEG_OTHER: 1717185029Spjd return (dgettext(TEXT_DOMAIN, "other")); 1718185029Spjd } 1719185029Spjd return (""); 1720185029Spjd} 1721185029Spjd 1722185029Spjd/*ARGSUSED*/ 1723185029Spjdstatic int 1724185029Spjdzfs_deleg_prop_cb(int prop, void *cb) 1725185029Spjd{ 1726185029Spjd if (zfs_prop_delegatable(prop)) 1727185029Spjd (void) fprintf(stderr, "%-15s %-15s\n", zfs_prop_to_name(prop), 1728185029Spjd zfs_deleg_perm_type_str(ZFS_DELEG_PROP)); 1729185029Spjd 1730185029Spjd return (ZPROP_CONT); 1731185029Spjd} 1732185029Spjd 1733185029Spjdvoid 1734185029Spjdzfs_deleg_permissions(void) 1735185029Spjd{ 1736185029Spjd int i; 1737185029Spjd 1738185029Spjd (void) fprintf(stderr, "\n%-15s %-15s\t%s\n\n", "NAME", 1739185029Spjd "TYPE", "NOTES"); 1740185029Spjd 1741185029Spjd /* 1742185029Spjd * First print out the subcommands 1743185029Spjd */ 1744185029Spjd for (i = 0; zfs_deleg_perm_tab[i].z_perm != NULL; i++) { 1745185029Spjd (void) fprintf(stderr, "%-15s %-15s\t%s\n", 1746185029Spjd zfs_deleg_perm_tab[i].z_perm, 1747185029Spjd zfs_deleg_perm_type_str( 1748185029Spjd zfs_deleg_perm_type(zfs_deleg_perm_tab[i].z_perm)), 1749185029Spjd zfs_deleg_perm_note(zfs_deleg_perm_tab[i].z_note)); 1750185029Spjd } 1751185029Spjd 1752185029Spjd (void) zprop_iter(zfs_deleg_prop_cb, NULL, B_FALSE, B_TRUE, 1753185029Spjd ZFS_TYPE_DATASET|ZFS_TYPE_VOLUME); 1754185029Spjd} 1755185029Spjd 1756185029Spjd/* 1757168404Spjd * Given a property name and value, set the property for the given dataset. 1758168404Spjd */ 1759168404Spjdint 1760168404Spjdzfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1761168404Spjd{ 1762168404Spjd zfs_cmd_t zc = { 0 }; 1763168404Spjd int ret = -1; 1764168404Spjd prop_changelist_t *cl = NULL; 1765168404Spjd char errbuf[1024]; 1766168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 1767168404Spjd nvlist_t *nvl = NULL, *realprops; 1768168404Spjd zfs_prop_t prop; 1769185029Spjd boolean_t do_prefix; 1770185029Spjd uint64_t idx; 1771168404Spjd 1772168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 1773168404Spjd dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1774168404Spjd zhp->zfs_name); 1775168404Spjd 1776168404Spjd if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1777168404Spjd nvlist_add_string(nvl, propname, propval) != 0) { 1778168404Spjd (void) no_memory(hdl); 1779168404Spjd goto error; 1780168404Spjd } 1781168404Spjd 1782185029Spjd if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, 1783168404Spjd zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1784168404Spjd goto error; 1785185029Spjd 1786168404Spjd nvlist_free(nvl); 1787168404Spjd nvl = realprops; 1788168404Spjd 1789168404Spjd prop = zfs_name_to_prop(propname); 1790168404Spjd 1791168404Spjd /* We don't support those properties on FreeBSD. */ 1792168404Spjd switch (prop) { 1793197867Strasz case ZFS_PROP_DEVICES: 1794197867Strasz case ZFS_PROP_ZONED: 1795168404Spjd case ZFS_PROP_SHAREISCSI: 1796168404Spjd case ZFS_PROP_ISCSIOPTIONS: 1797197867Strasz case ZFS_PROP_XATTR: 1798197867Strasz case ZFS_PROP_VSCAN: 1799197867Strasz case ZFS_PROP_NBMAND: 1800197867Strasz case ZFS_PROP_SHARESMB: 1801168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 1802168404Spjd "property '%s' not supported on FreeBSD", propname); 1803168404Spjd ret = zfs_error(hdl, EZFS_PERM, errbuf); 1804168404Spjd goto error; 1805168404Spjd } 1806168404Spjd 1807185029Spjd if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1808168404Spjd goto error; 1809168404Spjd 1810168404Spjd if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1811168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1812168404Spjd "child dataset with inherited mountpoint is used " 1813168404Spjd "in a non-global zone")); 1814168404Spjd ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1815168404Spjd goto error; 1816168404Spjd } 1817168404Spjd 1818185029Spjd /* 1819185029Spjd * If the dataset's canmount property is being set to noauto, 1820185029Spjd * then we want to prevent unmounting & remounting it. 1821185029Spjd */ 1822185029Spjd do_prefix = !((prop == ZFS_PROP_CANMOUNT) && 1823185029Spjd (zprop_string_to_index(prop, propval, &idx, 1824185029Spjd ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO)); 1825185029Spjd 1826185029Spjd if (do_prefix && (ret = changelist_prefix(cl)) != 0) 1827168404Spjd goto error; 1828168404Spjd 1829168404Spjd /* 1830168404Spjd * Execute the corresponding ioctl() to set this property. 1831168404Spjd */ 1832168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1833168404Spjd 1834185029Spjd if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1835168404Spjd goto error; 1836168404Spjd 1837185029Spjd ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1838168404Spjd if (ret != 0) { 1839168404Spjd switch (errno) { 1840168404Spjd 1841168404Spjd case ENOSPC: 1842168404Spjd /* 1843168404Spjd * For quotas and reservations, ENOSPC indicates 1844168404Spjd * something different; setting a quota or reservation 1845168404Spjd * doesn't use any disk space. 1846168404Spjd */ 1847168404Spjd switch (prop) { 1848168404Spjd case ZFS_PROP_QUOTA: 1849185029Spjd case ZFS_PROP_REFQUOTA: 1850168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1851168404Spjd "size is less than current used or " 1852168404Spjd "reserved space")); 1853168404Spjd (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1854168404Spjd break; 1855168404Spjd 1856168404Spjd case ZFS_PROP_RESERVATION: 1857185029Spjd case ZFS_PROP_REFRESERVATION: 1858168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1859168404Spjd "size is greater than available space")); 1860168404Spjd (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1861168404Spjd break; 1862168404Spjd 1863168404Spjd default: 1864168404Spjd (void) zfs_standard_error(hdl, errno, errbuf); 1865168404Spjd break; 1866168404Spjd } 1867168404Spjd break; 1868168404Spjd 1869168404Spjd case EBUSY: 1870168404Spjd if (prop == ZFS_PROP_VOLBLOCKSIZE) 1871168404Spjd (void) zfs_error(hdl, EZFS_VOLHASDATA, errbuf); 1872168404Spjd else 1873168404Spjd (void) zfs_standard_error(hdl, EBUSY, errbuf); 1874168404Spjd break; 1875168404Spjd 1876168404Spjd case EROFS: 1877168404Spjd (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1878168404Spjd break; 1879168404Spjd 1880168404Spjd case ENOTSUP: 1881168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1882185029Spjd "pool and or dataset must be upgraded to set this " 1883185029Spjd "property or value")); 1884168404Spjd (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1885168404Spjd break; 1886168404Spjd 1887185029Spjd case ERANGE: 1888185029Spjd if (prop == ZFS_PROP_COMPRESSION) { 1889185029Spjd (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1890185029Spjd "property setting is not allowed on " 1891185029Spjd "bootable datasets")); 1892185029Spjd (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1893185029Spjd } else { 1894185029Spjd (void) zfs_standard_error(hdl, errno, errbuf); 1895185029Spjd } 1896185029Spjd break; 1897185029Spjd 1898168404Spjd case EOVERFLOW: 1899168404Spjd /* 1900168404Spjd * This platform can't address a volume this big. 1901168404Spjd */ 1902168404Spjd#ifdef _ILP32 1903168404Spjd if (prop == ZFS_PROP_VOLSIZE) { 1904168404Spjd (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1905168404Spjd break; 1906168404Spjd } 1907168404Spjd#endif 1908168404Spjd /* FALLTHROUGH */ 1909168404Spjd default: 1910168404Spjd (void) zfs_standard_error(hdl, errno, errbuf); 1911168404Spjd } 1912168404Spjd } else { 1913185029Spjd if (do_prefix) 1914185029Spjd ret = changelist_postfix(cl); 1915185029Spjd 1916168404Spjd /* 1917168404Spjd * Refresh the statistics so the new property value 1918168404Spjd * is reflected. 1919168404Spjd */ 1920185029Spjd if (ret == 0) 1921168404Spjd (void) get_stats(zhp); 1922168404Spjd } 1923168404Spjd 1924168404Spjderror: 1925168404Spjd nvlist_free(nvl); 1926168404Spjd zcmd_free_nvlists(&zc); 1927168404Spjd if (cl) 1928168404Spjd changelist_free(cl); 1929168404Spjd return (ret); 1930168404Spjd} 1931168404Spjd 1932168404Spjd/* 1933168404Spjd * Given a property, inherit the value from the parent dataset. 1934168404Spjd */ 1935168404Spjdint 1936168404Spjdzfs_prop_inherit(zfs_handle_t *zhp, const char *propname) 1937168404Spjd{ 1938168404Spjd zfs_cmd_t zc = { 0 }; 1939168404Spjd int ret; 1940168404Spjd prop_changelist_t *cl; 1941168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 1942168404Spjd char errbuf[1024]; 1943168404Spjd zfs_prop_t prop; 1944168404Spjd 1945168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1946168404Spjd "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1947168404Spjd 1948185029Spjd if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1949168404Spjd /* 1950168404Spjd * For user properties, the amount of work we have to do is very 1951168404Spjd * small, so just do it here. 1952168404Spjd */ 1953168404Spjd if (!zfs_prop_user(propname)) { 1954168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1955168404Spjd "invalid property")); 1956168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1957168404Spjd } 1958168404Spjd 1959168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1960168404Spjd (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1961168404Spjd 1962185029Spjd if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1963168404Spjd return (zfs_standard_error(hdl, errno, errbuf)); 1964168404Spjd 1965168404Spjd return (0); 1966168404Spjd } 1967168404Spjd 1968168404Spjd /* 1969168404Spjd * Verify that this property is inheritable. 1970168404Spjd */ 1971168404Spjd if (zfs_prop_readonly(prop)) 1972168404Spjd return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1973168404Spjd 1974168404Spjd if (!zfs_prop_inheritable(prop)) 1975168404Spjd return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1976168404Spjd 1977168404Spjd /* 1978168404Spjd * Check to see if the value applies to this type 1979168404Spjd */ 1980168404Spjd if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1981168404Spjd return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1982168404Spjd 1983168404Spjd /* 1984168404Spjd * Normalize the name, to get rid of shorthand abbrevations. 1985168404Spjd */ 1986168404Spjd propname = zfs_prop_to_name(prop); 1987168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1988168404Spjd (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1989168404Spjd 1990168404Spjd if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1991168404Spjd zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1992168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1993168404Spjd "dataset is used in a non-global zone")); 1994168404Spjd return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1995168404Spjd } 1996168404Spjd 1997168404Spjd /* 1998168404Spjd * Determine datasets which will be affected by this change, if any. 1999168404Spjd */ 2000185029Spjd if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 2001168404Spjd return (-1); 2002168404Spjd 2003168404Spjd if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 2004168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2005168404Spjd "child dataset with inherited mountpoint is used " 2006168404Spjd "in a non-global zone")); 2007168404Spjd ret = zfs_error(hdl, EZFS_ZONED, errbuf); 2008168404Spjd goto error; 2009168404Spjd } 2010168404Spjd 2011168404Spjd if ((ret = changelist_prefix(cl)) != 0) 2012168404Spjd goto error; 2013168404Spjd 2014185029Spjd if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 2015168404Spjd return (zfs_standard_error(hdl, errno, errbuf)); 2016168404Spjd } else { 2017168404Spjd 2018168404Spjd if ((ret = changelist_postfix(cl)) != 0) 2019168404Spjd goto error; 2020168404Spjd 2021168404Spjd /* 2022168404Spjd * Refresh the statistics so the new property is reflected. 2023168404Spjd */ 2024168404Spjd (void) get_stats(zhp); 2025168404Spjd } 2026168404Spjd 2027168404Spjderror: 2028168404Spjd changelist_free(cl); 2029168404Spjd return (ret); 2030168404Spjd} 2031168404Spjd 2032168404Spjd/* 2033168404Spjd * True DSL properties are stored in an nvlist. The following two functions 2034168404Spjd * extract them appropriately. 2035168404Spjd */ 2036168404Spjdstatic uint64_t 2037168404Spjdgetprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 2038168404Spjd{ 2039168404Spjd nvlist_t *nv; 2040168404Spjd uint64_t value; 2041168404Spjd 2042168404Spjd *source = NULL; 2043168404Spjd if (nvlist_lookup_nvlist(zhp->zfs_props, 2044168404Spjd zfs_prop_to_name(prop), &nv) == 0) { 2045185029Spjd verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 2046185029Spjd (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 2047168404Spjd } else { 2048168404Spjd value = zfs_prop_default_numeric(prop); 2049168404Spjd *source = ""; 2050168404Spjd } 2051168404Spjd 2052168404Spjd return (value); 2053168404Spjd} 2054168404Spjd 2055168404Spjdstatic char * 2056168404Spjdgetprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 2057168404Spjd{ 2058168404Spjd nvlist_t *nv; 2059168404Spjd char *value; 2060168404Spjd 2061168404Spjd *source = NULL; 2062168404Spjd if (nvlist_lookup_nvlist(zhp->zfs_props, 2063168404Spjd zfs_prop_to_name(prop), &nv) == 0) { 2064185029Spjd verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 2065185029Spjd (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 2066168404Spjd } else { 2067168404Spjd if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 2068168404Spjd value = ""; 2069168404Spjd *source = ""; 2070168404Spjd } 2071168404Spjd 2072168404Spjd return (value); 2073168404Spjd} 2074168404Spjd 2075168404Spjd/* 2076168404Spjd * Internal function for getting a numeric property. Both zfs_prop_get() and 2077168404Spjd * zfs_prop_get_int() are built using this interface. 2078168404Spjd * 2079168404Spjd * Certain properties can be overridden using 'mount -o'. In this case, scan 2080168404Spjd * the contents of the /etc/mnttab entry, searching for the appropriate options. 2081168404Spjd * If they differ from the on-disk values, report the current values and mark 2082168404Spjd * the source "temporary". 2083168404Spjd */ 2084168404Spjdstatic int 2085185029Spjdget_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 2086168404Spjd char **source, uint64_t *val) 2087168404Spjd{ 2088185029Spjd zfs_cmd_t zc = { 0 }; 2089185029Spjd nvlist_t *zplprops = NULL; 2090168404Spjd struct mnttab mnt; 2091168404Spjd char *mntopt_on = NULL; 2092168404Spjd char *mntopt_off = NULL; 2093168404Spjd 2094168404Spjd *source = NULL; 2095168404Spjd 2096168404Spjd switch (prop) { 2097168404Spjd case ZFS_PROP_ATIME: 2098168404Spjd mntopt_on = MNTOPT_ATIME; 2099168404Spjd mntopt_off = MNTOPT_NOATIME; 2100168404Spjd break; 2101168404Spjd 2102168404Spjd case ZFS_PROP_DEVICES: 2103168404Spjd mntopt_on = MNTOPT_DEVICES; 2104168404Spjd mntopt_off = MNTOPT_NODEVICES; 2105168404Spjd break; 2106168404Spjd 2107168404Spjd case ZFS_PROP_EXEC: 2108168404Spjd mntopt_on = MNTOPT_EXEC; 2109168404Spjd mntopt_off = MNTOPT_NOEXEC; 2110168404Spjd break; 2111168404Spjd 2112168404Spjd case ZFS_PROP_READONLY: 2113168404Spjd mntopt_on = MNTOPT_RO; 2114168404Spjd mntopt_off = MNTOPT_RW; 2115168404Spjd break; 2116168404Spjd 2117168404Spjd case ZFS_PROP_SETUID: 2118168404Spjd mntopt_on = MNTOPT_SETUID; 2119168404Spjd mntopt_off = MNTOPT_NOSETUID; 2120168404Spjd break; 2121168404Spjd 2122168404Spjd case ZFS_PROP_XATTR: 2123168404Spjd mntopt_on = MNTOPT_XATTR; 2124168404Spjd mntopt_off = MNTOPT_NOXATTR; 2125168404Spjd break; 2126185029Spjd 2127185029Spjd case ZFS_PROP_NBMAND: 2128185029Spjd mntopt_on = MNTOPT_NBMAND; 2129185029Spjd mntopt_off = MNTOPT_NONBMAND; 2130185029Spjd break; 2131168404Spjd } 2132168404Spjd 2133168404Spjd /* 2134168404Spjd * Because looking up the mount options is potentially expensive 2135168404Spjd * (iterating over all of /etc/mnttab), we defer its calculation until 2136168404Spjd * we're looking up a property which requires its presence. 2137168404Spjd */ 2138168404Spjd if (!zhp->zfs_mntcheck && 2139168404Spjd (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 2140168404Spjd struct mnttab entry, search = { 0 }; 2141168404Spjd FILE *mnttab = zhp->zfs_hdl->libzfs_mnttab; 2142168404Spjd 2143168404Spjd search.mnt_special = (char *)zhp->zfs_name; 2144168404Spjd search.mnt_fstype = MNTTYPE_ZFS; 2145168404Spjd rewind(mnttab); 2146168404Spjd 2147168404Spjd if (getmntany(mnttab, &entry, &search) == 0) { 2148168404Spjd zhp->zfs_mntopts = zfs_strdup(zhp->zfs_hdl, 2149168404Spjd entry.mnt_mntopts); 2150168404Spjd if (zhp->zfs_mntopts == NULL) 2151168404Spjd return (-1); 2152168404Spjd } 2153168404Spjd 2154168404Spjd zhp->zfs_mntcheck = B_TRUE; 2155168404Spjd } 2156168404Spjd 2157168404Spjd if (zhp->zfs_mntopts == NULL) 2158168404Spjd mnt.mnt_mntopts = ""; 2159168404Spjd else 2160168404Spjd mnt.mnt_mntopts = zhp->zfs_mntopts; 2161168404Spjd 2162168404Spjd switch (prop) { 2163168404Spjd case ZFS_PROP_ATIME: 2164168404Spjd case ZFS_PROP_DEVICES: 2165168404Spjd case ZFS_PROP_EXEC: 2166168404Spjd case ZFS_PROP_READONLY: 2167168404Spjd case ZFS_PROP_SETUID: 2168168404Spjd case ZFS_PROP_XATTR: 2169185029Spjd case ZFS_PROP_NBMAND: 2170168404Spjd *val = getprop_uint64(zhp, prop, source); 2171168404Spjd 2172168404Spjd if (hasmntopt(&mnt, mntopt_on) && !*val) { 2173168404Spjd *val = B_TRUE; 2174168404Spjd if (src) 2175185029Spjd *src = ZPROP_SRC_TEMPORARY; 2176168404Spjd } else if (hasmntopt(&mnt, mntopt_off) && *val) { 2177168404Spjd *val = B_FALSE; 2178168404Spjd if (src) 2179185029Spjd *src = ZPROP_SRC_TEMPORARY; 2180168404Spjd } 2181168404Spjd break; 2182168404Spjd 2183168404Spjd case ZFS_PROP_CANMOUNT: 2184168404Spjd *val = getprop_uint64(zhp, prop, source); 2185185029Spjd if (*val != ZFS_CANMOUNT_ON) 2186168404Spjd *source = zhp->zfs_name; 2187168404Spjd else 2188168404Spjd *source = ""; /* default */ 2189168404Spjd break; 2190168404Spjd 2191168404Spjd case ZFS_PROP_QUOTA: 2192185029Spjd case ZFS_PROP_REFQUOTA: 2193168404Spjd case ZFS_PROP_RESERVATION: 2194185029Spjd case ZFS_PROP_REFRESERVATION: 2195168404Spjd *val = getprop_uint64(zhp, prop, source); 2196168404Spjd if (*val == 0) 2197168404Spjd *source = ""; /* default */ 2198168404Spjd else 2199168404Spjd *source = zhp->zfs_name; 2200168404Spjd break; 2201168404Spjd 2202168404Spjd case ZFS_PROP_MOUNTED: 2203168404Spjd *val = (zhp->zfs_mntopts != NULL); 2204168404Spjd break; 2205168404Spjd 2206168404Spjd case ZFS_PROP_NUMCLONES: 2207168404Spjd *val = zhp->zfs_dmustats.dds_num_clones; 2208168404Spjd break; 2209168404Spjd 2210185029Spjd case ZFS_PROP_VERSION: 2211185029Spjd case ZFS_PROP_NORMALIZE: 2212185029Spjd case ZFS_PROP_UTF8ONLY: 2213185029Spjd case ZFS_PROP_CASE: 2214185029Spjd if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 2215185029Spjd zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 2216185029Spjd return (-1); 2217185029Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2218185029Spjd if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 2219185029Spjd zcmd_free_nvlists(&zc); 2220185029Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2221185029Spjd "unable to get %s property"), 2222185029Spjd zfs_prop_to_name(prop)); 2223185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADVERSION, 2224185029Spjd dgettext(TEXT_DOMAIN, "internal error"))); 2225185029Spjd } 2226185029Spjd if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 2227185029Spjd nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 2228185029Spjd val) != 0) { 2229185029Spjd zcmd_free_nvlists(&zc); 2230185029Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2231185029Spjd "unable to get %s property"), 2232185029Spjd zfs_prop_to_name(prop)); 2233185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_NOMEM, 2234185029Spjd dgettext(TEXT_DOMAIN, "internal error"))); 2235185029Spjd } 2236185029Spjd if (zplprops) 2237185029Spjd nvlist_free(zplprops); 2238185029Spjd zcmd_free_nvlists(&zc); 2239185029Spjd break; 2240185029Spjd 2241168404Spjd default: 2242185029Spjd switch (zfs_prop_get_type(prop)) { 2243185029Spjd case PROP_TYPE_NUMBER: 2244185029Spjd case PROP_TYPE_INDEX: 2245185029Spjd *val = getprop_uint64(zhp, prop, source); 2246185029Spjd /* 2247185029Spjd * If we tried to use a defalut value for a 2248185029Spjd * readonly property, it means that it was not 2249185029Spjd * present; return an error. 2250185029Spjd */ 2251185029Spjd if (zfs_prop_readonly(prop) && 2252185029Spjd *source && (*source)[0] == '\0') { 2253185029Spjd return (-1); 2254185029Spjd } 2255185029Spjd break; 2256185029Spjd 2257185029Spjd case PROP_TYPE_STRING: 2258185029Spjd default: 2259185029Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2260185029Spjd "cannot get non-numeric property")); 2261185029Spjd return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2262185029Spjd dgettext(TEXT_DOMAIN, "internal error"))); 2263185029Spjd } 2264168404Spjd } 2265168404Spjd 2266168404Spjd return (0); 2267168404Spjd} 2268168404Spjd 2269168404Spjd/* 2270168404Spjd * Calculate the source type, given the raw source string. 2271168404Spjd */ 2272168404Spjdstatic void 2273185029Spjdget_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2274168404Spjd char *statbuf, size_t statlen) 2275168404Spjd{ 2276185029Spjd if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2277168404Spjd return; 2278168404Spjd 2279168404Spjd if (source == NULL) { 2280185029Spjd *srctype = ZPROP_SRC_NONE; 2281168404Spjd } else if (source[0] == '\0') { 2282185029Spjd *srctype = ZPROP_SRC_DEFAULT; 2283168404Spjd } else { 2284168404Spjd if (strcmp(source, zhp->zfs_name) == 0) { 2285185029Spjd *srctype = ZPROP_SRC_LOCAL; 2286168404Spjd } else { 2287168404Spjd (void) strlcpy(statbuf, source, statlen); 2288185029Spjd *srctype = ZPROP_SRC_INHERITED; 2289168404Spjd } 2290168404Spjd } 2291168404Spjd 2292168404Spjd} 2293168404Spjd 2294168404Spjd/* 2295168404Spjd * Retrieve a property from the given object. If 'literal' is specified, then 2296168404Spjd * numbers are left as exact values. Otherwise, numbers are converted to a 2297168404Spjd * human-readable form. 2298168404Spjd * 2299168404Spjd * Returns 0 on success, or -1 on error. 2300168404Spjd */ 2301168404Spjdint 2302168404Spjdzfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2303185029Spjd zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2304168404Spjd{ 2305168404Spjd char *source = NULL; 2306168404Spjd uint64_t val; 2307168404Spjd char *str; 2308168404Spjd const char *strval; 2309168404Spjd 2310168404Spjd /* 2311168404Spjd * Check to see if this property applies to our object 2312168404Spjd */ 2313168404Spjd if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2314168404Spjd return (-1); 2315168404Spjd 2316168404Spjd if (src) 2317185029Spjd *src = ZPROP_SRC_NONE; 2318168404Spjd 2319168404Spjd switch (prop) { 2320168404Spjd case ZFS_PROP_CREATION: 2321168404Spjd /* 2322168404Spjd * 'creation' is a time_t stored in the statistics. We convert 2323168404Spjd * this into a string unless 'literal' is specified. 2324168404Spjd */ 2325168404Spjd { 2326168404Spjd val = getprop_uint64(zhp, prop, &source); 2327168404Spjd time_t time = (time_t)val; 2328168404Spjd struct tm t; 2329168404Spjd 2330168404Spjd if (literal || 2331168404Spjd localtime_r(&time, &t) == NULL || 2332168404Spjd strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2333168404Spjd &t) == 0) 2334168404Spjd (void) snprintf(propbuf, proplen, "%llu", val); 2335168404Spjd } 2336168404Spjd break; 2337168404Spjd 2338168404Spjd case ZFS_PROP_MOUNTPOINT: 2339168404Spjd /* 2340168404Spjd * Getting the precise mountpoint can be tricky. 2341168404Spjd * 2342168404Spjd * - for 'none' or 'legacy', return those values. 2343168404Spjd * - for inherited mountpoints, we want to take everything 2344168404Spjd * after our ancestor and append it to the inherited value. 2345168404Spjd * 2346168404Spjd * If the pool has an alternate root, we want to prepend that 2347168404Spjd * root to any values we return. 2348168404Spjd */ 2349185029Spjd 2350168404Spjd str = getprop_string(zhp, prop, &source); 2351168404Spjd 2352185029Spjd if (str[0] == '/') { 2353185029Spjd char buf[MAXPATHLEN]; 2354185029Spjd char *root = buf; 2355168404Spjd const char *relpath = zhp->zfs_name + strlen(source); 2356168404Spjd 2357168404Spjd if (relpath[0] == '/') 2358168404Spjd relpath++; 2359185029Spjd 2360185029Spjd if ((zpool_get_prop(zhp->zpool_hdl, 2361185029Spjd ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || 2362185029Spjd (strcmp(root, "-") == 0)) 2363185029Spjd root[0] = '\0'; 2364185029Spjd /* 2365185029Spjd * Special case an alternate root of '/'. This will 2366185029Spjd * avoid having multiple leading slashes in the 2367185029Spjd * mountpoint path. 2368185029Spjd */ 2369185029Spjd if (strcmp(root, "/") == 0) 2370185029Spjd root++; 2371185029Spjd 2372185029Spjd /* 2373185029Spjd * If the mountpoint is '/' then skip over this 2374185029Spjd * if we are obtaining either an alternate root or 2375185029Spjd * an inherited mountpoint. 2376185029Spjd */ 2377185029Spjd if (str[1] == '\0' && (root[0] != '\0' || 2378185029Spjd relpath[0] != '\0')) 2379168404Spjd str++; 2380168404Spjd 2381168404Spjd if (relpath[0] == '\0') 2382168404Spjd (void) snprintf(propbuf, proplen, "%s%s", 2383168404Spjd root, str); 2384168404Spjd else 2385168404Spjd (void) snprintf(propbuf, proplen, "%s%s%s%s", 2386168404Spjd root, str, relpath[0] == '@' ? "" : "/", 2387168404Spjd relpath); 2388168404Spjd } else { 2389168404Spjd /* 'legacy' or 'none' */ 2390168404Spjd (void) strlcpy(propbuf, str, proplen); 2391168404Spjd } 2392168404Spjd 2393168404Spjd break; 2394168404Spjd 2395168404Spjd case ZFS_PROP_ORIGIN: 2396168404Spjd (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2397168404Spjd proplen); 2398168404Spjd /* 2399168404Spjd * If there is no parent at all, return failure to indicate that 2400168404Spjd * it doesn't apply to this dataset. 2401168404Spjd */ 2402168404Spjd if (propbuf[0] == '\0') 2403168404Spjd return (-1); 2404168404Spjd break; 2405168404Spjd 2406168404Spjd case ZFS_PROP_QUOTA: 2407185029Spjd case ZFS_PROP_REFQUOTA: 2408168404Spjd case ZFS_PROP_RESERVATION: 2409185029Spjd case ZFS_PROP_REFRESERVATION: 2410185029Spjd 2411168404Spjd if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2412168404Spjd return (-1); 2413168404Spjd 2414168404Spjd /* 2415168404Spjd * If quota or reservation is 0, we translate this into 'none' 2416168404Spjd * (unless literal is set), and indicate that it's the default 2417168404Spjd * value. Otherwise, we print the number nicely and indicate 2418168404Spjd * that its set locally. 2419168404Spjd */ 2420168404Spjd if (val == 0) { 2421168404Spjd if (literal) 2422168404Spjd (void) strlcpy(propbuf, "0", proplen); 2423168404Spjd else 2424168404Spjd (void) strlcpy(propbuf, "none", proplen); 2425168404Spjd } else { 2426168404Spjd if (literal) 2427168404Spjd (void) snprintf(propbuf, proplen, "%llu", 2428168404Spjd (u_longlong_t)val); 2429168404Spjd else 2430168404Spjd zfs_nicenum(val, propbuf, proplen); 2431168404Spjd } 2432168404Spjd break; 2433168404Spjd 2434168404Spjd case ZFS_PROP_COMPRESSRATIO: 2435168404Spjd if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2436168404Spjd return (-1); 2437168404Spjd (void) snprintf(propbuf, proplen, "%lld.%02lldx", (longlong_t) 2438168404Spjd val / 100, (longlong_t)val % 100); 2439168404Spjd break; 2440168404Spjd 2441168404Spjd case ZFS_PROP_TYPE: 2442168404Spjd switch (zhp->zfs_type) { 2443168404Spjd case ZFS_TYPE_FILESYSTEM: 2444168404Spjd str = "filesystem"; 2445168404Spjd break; 2446168404Spjd case ZFS_TYPE_VOLUME: 2447168404Spjd str = "volume"; 2448168404Spjd break; 2449168404Spjd case ZFS_TYPE_SNAPSHOT: 2450168404Spjd str = "snapshot"; 2451168404Spjd break; 2452168404Spjd default: 2453168404Spjd abort(); 2454168404Spjd } 2455168404Spjd (void) snprintf(propbuf, proplen, "%s", str); 2456168404Spjd break; 2457168404Spjd 2458168404Spjd case ZFS_PROP_MOUNTED: 2459168404Spjd /* 2460168404Spjd * The 'mounted' property is a pseudo-property that described 2461168404Spjd * whether the filesystem is currently mounted. Even though 2462168404Spjd * it's a boolean value, the typical values of "on" and "off" 2463168404Spjd * don't make sense, so we translate to "yes" and "no". 2464168404Spjd */ 2465168404Spjd if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2466168404Spjd src, &source, &val) != 0) 2467168404Spjd return (-1); 2468168404Spjd if (val) 2469168404Spjd (void) strlcpy(propbuf, "yes", proplen); 2470168404Spjd else 2471168404Spjd (void) strlcpy(propbuf, "no", proplen); 2472168404Spjd break; 2473168404Spjd 2474168404Spjd case ZFS_PROP_NAME: 2475168404Spjd /* 2476168404Spjd * The 'name' property is a pseudo-property derived from the 2477168404Spjd * dataset name. It is presented as a real property to simplify 2478168404Spjd * consumers. 2479168404Spjd */ 2480168404Spjd (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2481168404Spjd break; 2482168404Spjd 2483168404Spjd default: 2484185029Spjd switch (zfs_prop_get_type(prop)) { 2485185029Spjd case PROP_TYPE_NUMBER: 2486185029Spjd if (get_numeric_property(zhp, prop, src, 2487185029Spjd &source, &val) != 0) 2488185029Spjd return (-1); 2489185029Spjd if (literal) 2490185029Spjd (void) snprintf(propbuf, proplen, "%llu", 2491185029Spjd (u_longlong_t)val); 2492185029Spjd else 2493185029Spjd zfs_nicenum(val, propbuf, proplen); 2494185029Spjd break; 2495185029Spjd 2496185029Spjd case PROP_TYPE_STRING: 2497185029Spjd (void) strlcpy(propbuf, 2498185029Spjd getprop_string(zhp, prop, &source), proplen); 2499185029Spjd break; 2500185029Spjd 2501185029Spjd case PROP_TYPE_INDEX: 2502185029Spjd if (get_numeric_property(zhp, prop, src, 2503185029Spjd &source, &val) != 0) 2504185029Spjd return (-1); 2505185029Spjd if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2506185029Spjd return (-1); 2507185029Spjd (void) strlcpy(propbuf, strval, proplen); 2508185029Spjd break; 2509185029Spjd 2510185029Spjd default: 2511185029Spjd abort(); 2512185029Spjd } 2513168404Spjd } 2514168404Spjd 2515168404Spjd get_source(zhp, src, source, statbuf, statlen); 2516168404Spjd 2517168404Spjd return (0); 2518168404Spjd} 2519168404Spjd 2520168404Spjd/* 2521168404Spjd * Utility function to get the given numeric property. Does no validation that 2522168404Spjd * the given property is the appropriate type; should only be used with 2523168404Spjd * hard-coded property types. 2524168404Spjd */ 2525168404Spjduint64_t 2526168404Spjdzfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2527168404Spjd{ 2528168404Spjd char *source; 2529168404Spjd uint64_t val; 2530168404Spjd 2531185029Spjd (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2532168404Spjd 2533168404Spjd return (val); 2534168404Spjd} 2535168404Spjd 2536185029Spjdint 2537185029Spjdzfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2538185029Spjd{ 2539185029Spjd char buf[64]; 2540185029Spjd 2541185029Spjd zfs_nicenum(val, buf, sizeof (buf)); 2542185029Spjd return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2543185029Spjd} 2544185029Spjd 2545168404Spjd/* 2546168404Spjd * Similar to zfs_prop_get(), but returns the value as an integer. 2547168404Spjd */ 2548168404Spjdint 2549168404Spjdzfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2550185029Spjd zprop_source_t *src, char *statbuf, size_t statlen) 2551168404Spjd{ 2552168404Spjd char *source; 2553168404Spjd 2554168404Spjd /* 2555168404Spjd * Check to see if this property applies to our object 2556168404Spjd */ 2557185029Spjd if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2558168404Spjd return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2559168404Spjd dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2560168404Spjd zfs_prop_to_name(prop))); 2561185029Spjd } 2562168404Spjd 2563168404Spjd if (src) 2564185029Spjd *src = ZPROP_SRC_NONE; 2565168404Spjd 2566168404Spjd if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2567168404Spjd return (-1); 2568168404Spjd 2569168404Spjd get_source(zhp, src, source, statbuf, statlen); 2570168404Spjd 2571168404Spjd return (0); 2572168404Spjd} 2573168404Spjd 2574168404Spjd/* 2575168404Spjd * Returns the name of the given zfs handle. 2576168404Spjd */ 2577168404Spjdconst char * 2578168404Spjdzfs_get_name(const zfs_handle_t *zhp) 2579168404Spjd{ 2580168404Spjd return (zhp->zfs_name); 2581168404Spjd} 2582168404Spjd 2583168404Spjd/* 2584168404Spjd * Returns the type of the given zfs handle. 2585168404Spjd */ 2586168404Spjdzfs_type_t 2587168404Spjdzfs_get_type(const zfs_handle_t *zhp) 2588168404Spjd{ 2589168404Spjd return (zhp->zfs_type); 2590168404Spjd} 2591168404Spjd 2592168404Spjd/* 2593168404Spjd * Iterate over all child filesystems 2594168404Spjd */ 2595168404Spjdint 2596168404Spjdzfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data) 2597168404Spjd{ 2598168404Spjd zfs_cmd_t zc = { 0 }; 2599168404Spjd zfs_handle_t *nzhp; 2600168404Spjd int ret; 2601168404Spjd 2602185029Spjd if (zhp->zfs_type != ZFS_TYPE_FILESYSTEM) 2603185029Spjd return (0); 2604185029Spjd 2605168404Spjd for ((void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2606168404Spjd ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DATASET_LIST_NEXT, &zc) == 0; 2607168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name))) { 2608168404Spjd /* 2609168404Spjd * Ignore private dataset names. 2610168404Spjd */ 2611168404Spjd if (dataset_name_hidden(zc.zc_name)) 2612168404Spjd continue; 2613168404Spjd 2614168404Spjd /* 2615168404Spjd * Silently ignore errors, as the only plausible explanation is 2616168404Spjd * that the pool has since been removed. 2617168404Spjd */ 2618168404Spjd if ((nzhp = make_dataset_handle(zhp->zfs_hdl, 2619168404Spjd zc.zc_name)) == NULL) 2620168404Spjd continue; 2621168404Spjd 2622168404Spjd if ((ret = func(nzhp, data)) != 0) 2623168404Spjd return (ret); 2624168404Spjd } 2625168404Spjd 2626168404Spjd /* 2627168404Spjd * An errno value of ESRCH indicates normal completion. If ENOENT is 2628168404Spjd * returned, then the underlying dataset has been removed since we 2629168404Spjd * obtained the handle. 2630168404Spjd */ 2631168404Spjd if (errno != ESRCH && errno != ENOENT) 2632168404Spjd return (zfs_standard_error(zhp->zfs_hdl, errno, 2633168404Spjd dgettext(TEXT_DOMAIN, "cannot iterate filesystems"))); 2634168404Spjd 2635168404Spjd return (0); 2636168404Spjd} 2637168404Spjd 2638168404Spjd/* 2639168404Spjd * Iterate over all snapshots 2640168404Spjd */ 2641168404Spjdint 2642168404Spjdzfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data) 2643168404Spjd{ 2644168404Spjd zfs_cmd_t zc = { 0 }; 2645168404Spjd zfs_handle_t *nzhp; 2646168404Spjd int ret; 2647168404Spjd 2648185029Spjd if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) 2649185029Spjd return (0); 2650185029Spjd 2651168404Spjd for ((void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2652168404Spjd ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SNAPSHOT_LIST_NEXT, 2653168404Spjd &zc) == 0; 2654168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name))) { 2655168404Spjd 2656168404Spjd if ((nzhp = make_dataset_handle(zhp->zfs_hdl, 2657168404Spjd zc.zc_name)) == NULL) 2658168404Spjd continue; 2659168404Spjd 2660168404Spjd if ((ret = func(nzhp, data)) != 0) 2661168404Spjd return (ret); 2662168404Spjd } 2663168404Spjd 2664168404Spjd /* 2665168404Spjd * An errno value of ESRCH indicates normal completion. If ENOENT is 2666168404Spjd * returned, then the underlying dataset has been removed since we 2667168404Spjd * obtained the handle. Silently ignore this case, and return success. 2668168404Spjd */ 2669168404Spjd if (errno != ESRCH && errno != ENOENT) 2670168404Spjd return (zfs_standard_error(zhp->zfs_hdl, errno, 2671168404Spjd dgettext(TEXT_DOMAIN, "cannot iterate filesystems"))); 2672168404Spjd 2673168404Spjd return (0); 2674168404Spjd} 2675168404Spjd 2676168404Spjd/* 2677168404Spjd * Iterate over all children, snapshots and filesystems 2678168404Spjd */ 2679168404Spjdint 2680168404Spjdzfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data) 2681168404Spjd{ 2682168404Spjd int ret; 2683168404Spjd 2684168404Spjd if ((ret = zfs_iter_filesystems(zhp, func, data)) != 0) 2685168404Spjd return (ret); 2686168404Spjd 2687168404Spjd return (zfs_iter_snapshots(zhp, func, data)); 2688168404Spjd} 2689168404Spjd 2690168404Spjd/* 2691168404Spjd * Given a complete name, return just the portion that refers to the parent. 2692168404Spjd * Can return NULL if this is a pool. 2693168404Spjd */ 2694168404Spjdstatic int 2695168404Spjdparent_name(const char *path, char *buf, size_t buflen) 2696168404Spjd{ 2697168404Spjd char *loc; 2698168404Spjd 2699168404Spjd if ((loc = strrchr(path, '/')) == NULL) 2700168404Spjd return (-1); 2701168404Spjd 2702168404Spjd (void) strncpy(buf, path, MIN(buflen, loc - path)); 2703168404Spjd buf[loc - path] = '\0'; 2704168404Spjd 2705168404Spjd return (0); 2706168404Spjd} 2707168404Spjd 2708168404Spjd/* 2709185029Spjd * If accept_ancestor is false, then check to make sure that the given path has 2710185029Spjd * a parent, and that it exists. If accept_ancestor is true, then find the 2711185029Spjd * closest existing ancestor for the given path. In prefixlen return the 2712185029Spjd * length of already existing prefix of the given path. We also fetch the 2713185029Spjd * 'zoned' property, which is used to validate property settings when creating 2714185029Spjd * new datasets. 2715168404Spjd */ 2716168404Spjdstatic int 2717185029Spjdcheck_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2718185029Spjd boolean_t accept_ancestor, int *prefixlen) 2719168404Spjd{ 2720168404Spjd zfs_cmd_t zc = { 0 }; 2721168404Spjd char parent[ZFS_MAXNAMELEN]; 2722168404Spjd char *slash; 2723168404Spjd zfs_handle_t *zhp; 2724168404Spjd char errbuf[1024]; 2725168404Spjd 2726168404Spjd (void) snprintf(errbuf, sizeof (errbuf), "cannot create '%s'", 2727168404Spjd path); 2728168404Spjd 2729168404Spjd /* get parent, and check to see if this is just a pool */ 2730168404Spjd if (parent_name(path, parent, sizeof (parent)) != 0) { 2731168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2732168404Spjd "missing dataset name")); 2733168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2734168404Spjd } 2735168404Spjd 2736168404Spjd /* check to see if the pool exists */ 2737168404Spjd if ((slash = strchr(parent, '/')) == NULL) 2738168404Spjd slash = parent + strlen(parent); 2739168404Spjd (void) strncpy(zc.zc_name, parent, slash - parent); 2740168404Spjd zc.zc_name[slash - parent] = '\0'; 2741168404Spjd if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2742168404Spjd errno == ENOENT) { 2743168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2744168404Spjd "no such pool '%s'"), zc.zc_name); 2745168404Spjd return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2746168404Spjd } 2747168404Spjd 2748168404Spjd /* check to see if the parent dataset exists */ 2749185029Spjd while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2750185029Spjd if (errno == ENOENT && accept_ancestor) { 2751185029Spjd /* 2752185029Spjd * Go deeper to find an ancestor, give up on top level. 2753185029Spjd */ 2754185029Spjd if (parent_name(parent, parent, sizeof (parent)) != 0) { 2755185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2756185029Spjd "no such pool '%s'"), zc.zc_name); 2757185029Spjd return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2758185029Spjd } 2759185029Spjd } else if (errno == ENOENT) { 2760168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2761168404Spjd "parent does not exist")); 2762168404Spjd return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2763185029Spjd } else 2764168404Spjd return (zfs_standard_error(hdl, errno, errbuf)); 2765168404Spjd } 2766168404Spjd 2767168404Spjd *zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2768168404Spjd /* we are in a non-global zone, but parent is in the global zone */ 2769168404Spjd if (getzoneid() != GLOBAL_ZONEID && !(*zoned)) { 2770168404Spjd (void) zfs_standard_error(hdl, EPERM, errbuf); 2771168404Spjd zfs_close(zhp); 2772168404Spjd return (-1); 2773168404Spjd } 2774168404Spjd 2775168404Spjd /* make sure parent is a filesystem */ 2776168404Spjd if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2777168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2778168404Spjd "parent is not a filesystem")); 2779168404Spjd (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2780168404Spjd zfs_close(zhp); 2781168404Spjd return (-1); 2782168404Spjd } 2783168404Spjd 2784168404Spjd zfs_close(zhp); 2785185029Spjd if (prefixlen != NULL) 2786185029Spjd *prefixlen = strlen(parent); 2787168404Spjd return (0); 2788168404Spjd} 2789168404Spjd 2790168404Spjd/* 2791185029Spjd * Finds whether the dataset of the given type(s) exists. 2792185029Spjd */ 2793185029Spjdboolean_t 2794185029Spjdzfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 2795185029Spjd{ 2796185029Spjd zfs_handle_t *zhp; 2797185029Spjd 2798185029Spjd if (!zfs_validate_name(hdl, path, types, B_FALSE)) 2799185029Spjd return (B_FALSE); 2800185029Spjd 2801185029Spjd /* 2802185029Spjd * Try to get stats for the dataset, which will tell us if it exists. 2803185029Spjd */ 2804185029Spjd if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 2805185029Spjd int ds_type = zhp->zfs_type; 2806185029Spjd 2807185029Spjd zfs_close(zhp); 2808185029Spjd if (types & ds_type) 2809185029Spjd return (B_TRUE); 2810185029Spjd } 2811185029Spjd return (B_FALSE); 2812185029Spjd} 2813185029Spjd 2814185029Spjd/* 2815185029Spjd * Given a path to 'target', create all the ancestors between 2816185029Spjd * the prefixlen portion of the path, and the target itself. 2817185029Spjd * Fail if the initial prefixlen-ancestor does not already exist. 2818185029Spjd */ 2819185029Spjdint 2820185029Spjdcreate_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 2821185029Spjd{ 2822185029Spjd zfs_handle_t *h; 2823185029Spjd char *cp; 2824185029Spjd const char *opname; 2825185029Spjd 2826185029Spjd /* make sure prefix exists */ 2827185029Spjd cp = target + prefixlen; 2828185029Spjd if (*cp != '/') { 2829185029Spjd assert(strchr(cp, '/') == NULL); 2830185029Spjd h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2831185029Spjd } else { 2832185029Spjd *cp = '\0'; 2833185029Spjd h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2834185029Spjd *cp = '/'; 2835185029Spjd } 2836185029Spjd if (h == NULL) 2837185029Spjd return (-1); 2838185029Spjd zfs_close(h); 2839185029Spjd 2840185029Spjd /* 2841185029Spjd * Attempt to create, mount, and share any ancestor filesystems, 2842185029Spjd * up to the prefixlen-long one. 2843185029Spjd */ 2844185029Spjd for (cp = target + prefixlen + 1; 2845185029Spjd cp = strchr(cp, '/'); *cp = '/', cp++) { 2846185029Spjd char *logstr; 2847185029Spjd 2848185029Spjd *cp = '\0'; 2849185029Spjd 2850185029Spjd h = make_dataset_handle(hdl, target); 2851185029Spjd if (h) { 2852185029Spjd /* it already exists, nothing to do here */ 2853185029Spjd zfs_close(h); 2854185029Spjd continue; 2855185029Spjd } 2856185029Spjd 2857185029Spjd logstr = hdl->libzfs_log_str; 2858185029Spjd hdl->libzfs_log_str = NULL; 2859185029Spjd if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 2860185029Spjd NULL) != 0) { 2861185029Spjd hdl->libzfs_log_str = logstr; 2862185029Spjd opname = dgettext(TEXT_DOMAIN, "create"); 2863185029Spjd goto ancestorerr; 2864185029Spjd } 2865185029Spjd 2866185029Spjd hdl->libzfs_log_str = logstr; 2867185029Spjd h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2868185029Spjd if (h == NULL) { 2869185029Spjd opname = dgettext(TEXT_DOMAIN, "open"); 2870185029Spjd goto ancestorerr; 2871185029Spjd } 2872185029Spjd 2873185029Spjd if (zfs_mount(h, NULL, 0) != 0) { 2874185029Spjd opname = dgettext(TEXT_DOMAIN, "mount"); 2875185029Spjd goto ancestorerr; 2876185029Spjd } 2877185029Spjd 2878185029Spjd if (zfs_share(h) != 0) { 2879185029Spjd opname = dgettext(TEXT_DOMAIN, "share"); 2880185029Spjd goto ancestorerr; 2881185029Spjd } 2882185029Spjd 2883185029Spjd zfs_close(h); 2884185029Spjd } 2885185029Spjd 2886185029Spjd return (0); 2887185029Spjd 2888185029Spjdancestorerr: 2889185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2890185029Spjd "failed to %s ancestor '%s'"), opname, target); 2891185029Spjd return (-1); 2892185029Spjd} 2893185029Spjd 2894185029Spjd/* 2895185029Spjd * Creates non-existing ancestors of the given path. 2896185029Spjd */ 2897185029Spjdint 2898185029Spjdzfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 2899185029Spjd{ 2900185029Spjd int prefix; 2901185029Spjd uint64_t zoned; 2902185029Spjd char *path_copy; 2903185029Spjd int rc; 2904185029Spjd 2905185029Spjd if (check_parents(hdl, path, &zoned, B_TRUE, &prefix) != 0) 2906185029Spjd return (-1); 2907185029Spjd 2908185029Spjd if ((path_copy = strdup(path)) != NULL) { 2909185029Spjd rc = create_parents(hdl, path_copy, prefix); 2910185029Spjd free(path_copy); 2911185029Spjd } 2912185029Spjd if (path_copy == NULL || rc != 0) 2913185029Spjd return (-1); 2914185029Spjd 2915185029Spjd return (0); 2916185029Spjd} 2917185029Spjd 2918185029Spjd/* 2919168404Spjd * Create a new filesystem or volume. 2920168404Spjd */ 2921168404Spjdint 2922168404Spjdzfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 2923168404Spjd nvlist_t *props) 2924168404Spjd{ 2925168404Spjd zfs_cmd_t zc = { 0 }; 2926168404Spjd int ret; 2927168404Spjd uint64_t size = 0; 2928168404Spjd uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 2929168404Spjd char errbuf[1024]; 2930168404Spjd uint64_t zoned; 2931168404Spjd 2932168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 2933168404Spjd "cannot create '%s'"), path); 2934168404Spjd 2935168404Spjd /* validate the path, taking care to note the extended error message */ 2936185029Spjd if (!zfs_validate_name(hdl, path, type, B_TRUE)) 2937168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2938168404Spjd 2939168404Spjd /* validate parents exist */ 2940185029Spjd if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 2941168404Spjd return (-1); 2942168404Spjd 2943168404Spjd /* 2944168404Spjd * The failure modes when creating a dataset of a different type over 2945168404Spjd * one that already exists is a little strange. In particular, if you 2946168404Spjd * try to create a dataset on top of an existing dataset, the ioctl() 2947168404Spjd * will return ENOENT, not EEXIST. To prevent this from happening, we 2948168404Spjd * first try to see if the dataset exists. 2949168404Spjd */ 2950168404Spjd (void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name)); 2951185029Spjd if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { 2952168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2953168404Spjd "dataset already exists")); 2954168404Spjd return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 2955168404Spjd } 2956168404Spjd 2957168404Spjd if (type == ZFS_TYPE_VOLUME) 2958168404Spjd zc.zc_objset_type = DMU_OST_ZVOL; 2959168404Spjd else 2960168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 2961168404Spjd 2962185029Spjd if (props && (props = zfs_valid_proplist(hdl, type, props, 2963168404Spjd zoned, NULL, errbuf)) == 0) 2964168404Spjd return (-1); 2965168404Spjd 2966168404Spjd if (type == ZFS_TYPE_VOLUME) { 2967168404Spjd /* 2968168404Spjd * If we are creating a volume, the size and block size must 2969168404Spjd * satisfy a few restraints. First, the blocksize must be a 2970168404Spjd * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 2971168404Spjd * volsize must be a multiple of the block size, and cannot be 2972168404Spjd * zero. 2973168404Spjd */ 2974168404Spjd if (props == NULL || nvlist_lookup_uint64(props, 2975168404Spjd zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 2976168404Spjd nvlist_free(props); 2977168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2978168404Spjd "missing volume size")); 2979168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 2980168404Spjd } 2981168404Spjd 2982168404Spjd if ((ret = nvlist_lookup_uint64(props, 2983168404Spjd zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2984168404Spjd &blocksize)) != 0) { 2985168404Spjd if (ret == ENOENT) { 2986168404Spjd blocksize = zfs_prop_default_numeric( 2987168404Spjd ZFS_PROP_VOLBLOCKSIZE); 2988168404Spjd } else { 2989168404Spjd nvlist_free(props); 2990168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2991168404Spjd "missing volume block size")); 2992168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 2993168404Spjd } 2994168404Spjd } 2995168404Spjd 2996168404Spjd if (size == 0) { 2997168404Spjd nvlist_free(props); 2998168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2999168404Spjd "volume size cannot be zero")); 3000168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3001168404Spjd } 3002168404Spjd 3003168404Spjd if (size % blocksize != 0) { 3004168404Spjd nvlist_free(props); 3005168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3006168404Spjd "volume size must be a multiple of volume block " 3007168404Spjd "size")); 3008168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3009168404Spjd } 3010168404Spjd } 3011168404Spjd 3012185029Spjd if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0) 3013168404Spjd return (-1); 3014168404Spjd nvlist_free(props); 3015168404Spjd 3016168404Spjd /* create the dataset */ 3017185029Spjd ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc); 3018168404Spjd 3019168404Spjd if (ret == 0 && type == ZFS_TYPE_VOLUME) { 3020168404Spjd ret = zvol_create_link(hdl, path); 3021168404Spjd if (ret) { 3022168404Spjd (void) zfs_standard_error(hdl, errno, 3023168404Spjd dgettext(TEXT_DOMAIN, 3024168404Spjd "Volume successfully created, but device links " 3025168404Spjd "were not created")); 3026168404Spjd zcmd_free_nvlists(&zc); 3027168404Spjd return (-1); 3028168404Spjd } 3029168404Spjd } 3030168404Spjd 3031168404Spjd zcmd_free_nvlists(&zc); 3032168404Spjd 3033168404Spjd /* check for failure */ 3034168404Spjd if (ret != 0) { 3035168404Spjd char parent[ZFS_MAXNAMELEN]; 3036168404Spjd (void) parent_name(path, parent, sizeof (parent)); 3037168404Spjd 3038168404Spjd switch (errno) { 3039168404Spjd case ENOENT: 3040168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3041168404Spjd "no such parent '%s'"), parent); 3042168404Spjd return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3043168404Spjd 3044168404Spjd case EINVAL: 3045168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3046168404Spjd "parent '%s' is not a filesystem"), parent); 3047168404Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3048168404Spjd 3049168404Spjd case EDOM: 3050168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3051168404Spjd "volume block size must be power of 2 from " 3052168404Spjd "%u to %uk"), 3053168404Spjd (uint_t)SPA_MINBLOCKSIZE, 3054168404Spjd (uint_t)SPA_MAXBLOCKSIZE >> 10); 3055168404Spjd 3056168404Spjd return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3057168404Spjd 3058185029Spjd case ENOTSUP: 3059185029Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3060185029Spjd "pool must be upgraded to set this " 3061185029Spjd "property or value")); 3062185029Spjd return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3063168404Spjd#ifdef _ILP32 3064168404Spjd case EOVERFLOW: 3065168404Spjd /* 3066168404Spjd * This platform can't address a volume this big. 3067168404Spjd */ 3068168404Spjd if (type == ZFS_TYPE_VOLUME) 3069168404Spjd return (zfs_error(hdl, EZFS_VOLTOOBIG, 3070168404Spjd errbuf)); 3071168404Spjd#endif 3072168404Spjd /* FALLTHROUGH */ 3073168404Spjd default: 3074168404Spjd return (zfs_standard_error(hdl, errno, errbuf)); 3075168404Spjd } 3076168404Spjd } 3077168404Spjd 3078168404Spjd return (0); 3079168404Spjd} 3080168404Spjd 3081168404Spjd/* 3082168404Spjd * Destroys the given dataset. The caller must make sure that the filesystem 3083168404Spjd * isn't mounted, and that there are no active dependents. 3084168404Spjd */ 3085168404Spjdint 3086168404Spjdzfs_destroy(zfs_handle_t *zhp) 3087168404Spjd{ 3088168404Spjd zfs_cmd_t zc = { 0 }; 3089168404Spjd 3090168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3091168404Spjd 3092168404Spjd if (ZFS_IS_VOLUME(zhp)) { 3093168404Spjd /* 3094185029Spjd * If user doesn't have permissions to unshare volume, then 3095185029Spjd * abort the request. This would only happen for a 3096185029Spjd * non-privileged user. 3097168404Spjd */ 3098185029Spjd if (zfs_unshare_iscsi(zhp) != 0) { 3099185029Spjd return (-1); 3100185029Spjd } 3101168404Spjd 3102168404Spjd if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) 3103168404Spjd return (-1); 3104168404Spjd 3105168404Spjd zc.zc_objset_type = DMU_OST_ZVOL; 3106168404Spjd } else { 3107168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 3108168404Spjd } 3109168404Spjd 3110185029Spjd if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) { 3111168404Spjd return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3112168404Spjd dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3113168404Spjd zhp->zfs_name)); 3114168404Spjd } 3115168404Spjd 3116168404Spjd remove_mountpoint(zhp); 3117168404Spjd 3118168404Spjd return (0); 3119168404Spjd} 3120168404Spjd 3121168404Spjdstruct destroydata { 3122168404Spjd char *snapname; 3123168404Spjd boolean_t gotone; 3124168404Spjd boolean_t closezhp; 3125168404Spjd}; 3126168404Spjd 3127168404Spjdstatic int 3128168404Spjdzfs_remove_link_cb(zfs_handle_t *zhp, void *arg) 3129168404Spjd{ 3130168404Spjd struct destroydata *dd = arg; 3131168404Spjd zfs_handle_t *szhp; 3132168404Spjd char name[ZFS_MAXNAMELEN]; 3133168404Spjd boolean_t closezhp = dd->closezhp; 3134168404Spjd int rv; 3135168404Spjd 3136168404Spjd (void) strlcpy(name, zhp->zfs_name, sizeof (name)); 3137168404Spjd (void) strlcat(name, "@", sizeof (name)); 3138168404Spjd (void) strlcat(name, dd->snapname, sizeof (name)); 3139168404Spjd 3140168404Spjd szhp = make_dataset_handle(zhp->zfs_hdl, name); 3141168404Spjd if (szhp) { 3142168404Spjd dd->gotone = B_TRUE; 3143168404Spjd zfs_close(szhp); 3144168404Spjd } 3145168404Spjd 3146168404Spjd if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3147168404Spjd (void) zvol_remove_link(zhp->zfs_hdl, name); 3148168404Spjd /* 3149168404Spjd * NB: this is simply a best-effort. We don't want to 3150168404Spjd * return an error, because then we wouldn't visit all 3151168404Spjd * the volumes. 3152168404Spjd */ 3153168404Spjd } 3154168404Spjd 3155168404Spjd dd->closezhp = B_TRUE; 3156168404Spjd rv = zfs_iter_filesystems(zhp, zfs_remove_link_cb, arg); 3157168404Spjd if (closezhp) 3158168404Spjd zfs_close(zhp); 3159168404Spjd return (rv); 3160168404Spjd} 3161168404Spjd 3162168404Spjd/* 3163168404Spjd * Destroys all snapshots with the given name in zhp & descendants. 3164168404Spjd */ 3165168404Spjdint 3166168404Spjdzfs_destroy_snaps(zfs_handle_t *zhp, char *snapname) 3167168404Spjd{ 3168168404Spjd zfs_cmd_t zc = { 0 }; 3169168404Spjd int ret; 3170168404Spjd struct destroydata dd = { 0 }; 3171168404Spjd 3172168404Spjd dd.snapname = snapname; 3173168404Spjd (void) zfs_remove_link_cb(zhp, &dd); 3174168404Spjd 3175168404Spjd if (!dd.gotone) { 3176168404Spjd return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3177168404Spjd dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3178168404Spjd zhp->zfs_name, snapname)); 3179168404Spjd } 3180168404Spjd 3181168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3182168404Spjd (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 3183168404Spjd 3184185029Spjd ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc); 3185168404Spjd if (ret != 0) { 3186168404Spjd char errbuf[1024]; 3187168404Spjd 3188168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3189168404Spjd "cannot destroy '%s@%s'"), zc.zc_name, snapname); 3190168404Spjd 3191168404Spjd switch (errno) { 3192168404Spjd case EEXIST: 3193168404Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3194168404Spjd "snapshot is cloned")); 3195168404Spjd return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf)); 3196168404Spjd 3197168404Spjd default: 3198168404Spjd return (zfs_standard_error(zhp->zfs_hdl, errno, 3199168404Spjd errbuf)); 3200168404Spjd } 3201168404Spjd } 3202168404Spjd 3203168404Spjd return (0); 3204168404Spjd} 3205168404Spjd 3206168404Spjd/* 3207168404Spjd * Clones the given dataset. The target must be of the same type as the source. 3208168404Spjd */ 3209168404Spjdint 3210168404Spjdzfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3211168404Spjd{ 3212168404Spjd zfs_cmd_t zc = { 0 }; 3213168404Spjd char parent[ZFS_MAXNAMELEN]; 3214168404Spjd int ret; 3215168404Spjd char errbuf[1024]; 3216168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 3217168404Spjd zfs_type_t type; 3218168404Spjd uint64_t zoned; 3219168404Spjd 3220168404Spjd assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3221168404Spjd 3222168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3223168404Spjd "cannot create '%s'"), target); 3224168404Spjd 3225168404Spjd /* validate the target name */ 3226185029Spjd if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3227168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3228168404Spjd 3229168404Spjd /* validate parents exist */ 3230185029Spjd if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3231168404Spjd return (-1); 3232168404Spjd 3233168404Spjd (void) parent_name(target, parent, sizeof (parent)); 3234168404Spjd 3235168404Spjd /* do the clone */ 3236168404Spjd if (ZFS_IS_VOLUME(zhp)) { 3237168404Spjd zc.zc_objset_type = DMU_OST_ZVOL; 3238168404Spjd type = ZFS_TYPE_VOLUME; 3239168404Spjd } else { 3240168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 3241168404Spjd type = ZFS_TYPE_FILESYSTEM; 3242168404Spjd } 3243168404Spjd 3244168404Spjd if (props) { 3245185029Spjd if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3246185029Spjd zhp, errbuf)) == NULL) 3247168404Spjd return (-1); 3248168404Spjd 3249185029Spjd if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 3250168404Spjd nvlist_free(props); 3251168404Spjd return (-1); 3252168404Spjd } 3253168404Spjd 3254168404Spjd nvlist_free(props); 3255168404Spjd } 3256168404Spjd 3257168404Spjd (void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name)); 3258168404Spjd (void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value)); 3259185029Spjd ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc); 3260168404Spjd 3261168404Spjd zcmd_free_nvlists(&zc); 3262168404Spjd 3263168404Spjd if (ret != 0) { 3264168404Spjd switch (errno) { 3265168404Spjd 3266168404Spjd case ENOENT: 3267168404Spjd /* 3268168404Spjd * The parent doesn't exist. We should have caught this 3269168404Spjd * above, but there may a race condition that has since 3270168404Spjd * destroyed the parent. 3271168404Spjd * 3272168404Spjd * At this point, we don't know whether it's the source 3273168404Spjd * that doesn't exist anymore, or whether the target 3274168404Spjd * dataset doesn't exist. 3275168404Spjd */ 3276168404Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3277168404Spjd "no such parent '%s'"), parent); 3278168404Spjd return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3279168404Spjd 3280168404Spjd case EXDEV: 3281168404Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3282168404Spjd "source and target pools differ")); 3283168404Spjd return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3284168404Spjd errbuf)); 3285168404Spjd 3286168404Spjd default: 3287168404Spjd return (zfs_standard_error(zhp->zfs_hdl, errno, 3288168404Spjd errbuf)); 3289168404Spjd } 3290168404Spjd } else if (ZFS_IS_VOLUME(zhp)) { 3291168404Spjd ret = zvol_create_link(zhp->zfs_hdl, target); 3292168404Spjd } 3293168404Spjd 3294168404Spjd return (ret); 3295168404Spjd} 3296168404Spjd 3297168404Spjdtypedef struct promote_data { 3298168404Spjd char cb_mountpoint[MAXPATHLEN]; 3299168404Spjd const char *cb_target; 3300168404Spjd const char *cb_errbuf; 3301168404Spjd uint64_t cb_pivot_txg; 3302168404Spjd} promote_data_t; 3303168404Spjd 3304168404Spjdstatic int 3305168404Spjdpromote_snap_cb(zfs_handle_t *zhp, void *data) 3306168404Spjd{ 3307168404Spjd promote_data_t *pd = data; 3308168404Spjd zfs_handle_t *szhp; 3309168404Spjd char snapname[MAXPATHLEN]; 3310168404Spjd int rv = 0; 3311168404Spjd 3312168404Spjd /* We don't care about snapshots after the pivot point */ 3313168404Spjd if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > pd->cb_pivot_txg) { 3314168404Spjd zfs_close(zhp); 3315168404Spjd return (0); 3316168404Spjd } 3317168404Spjd 3318168404Spjd /* Remove the device link if it's a zvol. */ 3319168404Spjd if (ZFS_IS_VOLUME(zhp)) 3320168404Spjd (void) zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name); 3321168404Spjd 3322168404Spjd /* Check for conflicting names */ 3323168404Spjd (void) strlcpy(snapname, pd->cb_target, sizeof (snapname)); 3324168404Spjd (void) strlcat(snapname, strchr(zhp->zfs_name, '@'), sizeof (snapname)); 3325168404Spjd szhp = make_dataset_handle(zhp->zfs_hdl, snapname); 3326168404Spjd if (szhp != NULL) { 3327168404Spjd zfs_close(szhp); 3328168404Spjd zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3329168404Spjd "snapshot name '%s' from origin \n" 3330168404Spjd "conflicts with '%s' from target"), 3331168404Spjd zhp->zfs_name, snapname); 3332168404Spjd rv = zfs_error(zhp->zfs_hdl, EZFS_EXISTS, pd->cb_errbuf); 3333168404Spjd } 3334168404Spjd zfs_close(zhp); 3335168404Spjd return (rv); 3336168404Spjd} 3337168404Spjd 3338168404Spjdstatic int 3339168404Spjdpromote_snap_done_cb(zfs_handle_t *zhp, void *data) 3340168404Spjd{ 3341168404Spjd promote_data_t *pd = data; 3342168404Spjd 3343168404Spjd /* We don't care about snapshots after the pivot point */ 3344168404Spjd if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) <= pd->cb_pivot_txg) { 3345168404Spjd /* Create the device link if it's a zvol. */ 3346168404Spjd if (ZFS_IS_VOLUME(zhp)) 3347168404Spjd (void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name); 3348168404Spjd } 3349168404Spjd 3350168404Spjd zfs_close(zhp); 3351168404Spjd return (0); 3352168404Spjd} 3353168404Spjd 3354168404Spjd/* 3355168404Spjd * Promotes the given clone fs to be the clone parent. 3356168404Spjd */ 3357168404Spjdint 3358168404Spjdzfs_promote(zfs_handle_t *zhp) 3359168404Spjd{ 3360168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 3361168404Spjd zfs_cmd_t zc = { 0 }; 3362168404Spjd char parent[MAXPATHLEN]; 3363168404Spjd char *cp; 3364168404Spjd int ret; 3365168404Spjd zfs_handle_t *pzhp; 3366168404Spjd promote_data_t pd; 3367168404Spjd char errbuf[1024]; 3368168404Spjd 3369168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3370168404Spjd "cannot promote '%s'"), zhp->zfs_name); 3371168404Spjd 3372168404Spjd if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3373168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3374168404Spjd "snapshots can not be promoted")); 3375168404Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3376168404Spjd } 3377168404Spjd 3378185029Spjd (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3379168404Spjd if (parent[0] == '\0') { 3380168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3381168404Spjd "not a cloned filesystem")); 3382168404Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3383168404Spjd } 3384168404Spjd cp = strchr(parent, '@'); 3385168404Spjd *cp = '\0'; 3386168404Spjd 3387168404Spjd /* Walk the snapshots we will be moving */ 3388185029Spjd pzhp = zfs_open(hdl, zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); 3389168404Spjd if (pzhp == NULL) 3390168404Spjd return (-1); 3391168404Spjd pd.cb_pivot_txg = zfs_prop_get_int(pzhp, ZFS_PROP_CREATETXG); 3392168404Spjd zfs_close(pzhp); 3393168404Spjd pd.cb_target = zhp->zfs_name; 3394168404Spjd pd.cb_errbuf = errbuf; 3395185029Spjd pzhp = zfs_open(hdl, parent, ZFS_TYPE_DATASET); 3396168404Spjd if (pzhp == NULL) 3397168404Spjd return (-1); 3398168404Spjd (void) zfs_prop_get(pzhp, ZFS_PROP_MOUNTPOINT, pd.cb_mountpoint, 3399168404Spjd sizeof (pd.cb_mountpoint), NULL, NULL, 0, FALSE); 3400168404Spjd ret = zfs_iter_snapshots(pzhp, promote_snap_cb, &pd); 3401168404Spjd if (ret != 0) { 3402168404Spjd zfs_close(pzhp); 3403168404Spjd return (-1); 3404168404Spjd } 3405168404Spjd 3406168404Spjd /* issue the ioctl */ 3407185029Spjd (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3408168404Spjd sizeof (zc.zc_value)); 3409168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3410185029Spjd ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3411168404Spjd 3412168404Spjd if (ret != 0) { 3413168404Spjd int save_errno = errno; 3414168404Spjd 3415168404Spjd (void) zfs_iter_snapshots(pzhp, promote_snap_done_cb, &pd); 3416168404Spjd zfs_close(pzhp); 3417168404Spjd 3418168404Spjd switch (save_errno) { 3419168404Spjd case EEXIST: 3420168404Spjd /* 3421168404Spjd * There is a conflicting snapshot name. We 3422168404Spjd * should have caught this above, but they could 3423168404Spjd * have renamed something in the mean time. 3424168404Spjd */ 3425168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3426168404Spjd "conflicting snapshot name from parent '%s'"), 3427168404Spjd parent); 3428168404Spjd return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3429168404Spjd 3430168404Spjd default: 3431168404Spjd return (zfs_standard_error(hdl, save_errno, errbuf)); 3432168404Spjd } 3433168404Spjd } else { 3434168404Spjd (void) zfs_iter_snapshots(zhp, promote_snap_done_cb, &pd); 3435168404Spjd } 3436168404Spjd 3437168404Spjd zfs_close(pzhp); 3438168404Spjd return (ret); 3439168404Spjd} 3440168404Spjd 3441168676Spjdstruct createdata { 3442168676Spjd const char *cd_snapname; 3443168676Spjd int cd_ifexists; 3444168676Spjd}; 3445168676Spjd 3446168404Spjdstatic int 3447168404Spjdzfs_create_link_cb(zfs_handle_t *zhp, void *arg) 3448168404Spjd{ 3449168676Spjd struct createdata *cd = arg; 3450168404Spjd int ret; 3451168404Spjd 3452168404Spjd if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3453168404Spjd char name[MAXPATHLEN]; 3454168404Spjd 3455168404Spjd (void) strlcpy(name, zhp->zfs_name, sizeof (name)); 3456168404Spjd (void) strlcat(name, "@", sizeof (name)); 3457168676Spjd (void) strlcat(name, cd->cd_snapname, sizeof (name)); 3458168676Spjd (void) zvol_create_link_common(zhp->zfs_hdl, name, 3459168676Spjd cd->cd_ifexists); 3460168404Spjd /* 3461168404Spjd * NB: this is simply a best-effort. We don't want to 3462168404Spjd * return an error, because then we wouldn't visit all 3463168404Spjd * the volumes. 3464168404Spjd */ 3465168404Spjd } 3466168404Spjd 3467168676Spjd ret = zfs_iter_filesystems(zhp, zfs_create_link_cb, cd); 3468168404Spjd 3469168404Spjd zfs_close(zhp); 3470168404Spjd 3471168404Spjd return (ret); 3472168404Spjd} 3473168404Spjd 3474168404Spjd/* 3475168404Spjd * Takes a snapshot of the given dataset. 3476168404Spjd */ 3477168404Spjdint 3478185029Spjdzfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3479185029Spjd nvlist_t *props) 3480168404Spjd{ 3481168404Spjd const char *delim; 3482185029Spjd char parent[ZFS_MAXNAMELEN]; 3483168404Spjd zfs_handle_t *zhp; 3484168404Spjd zfs_cmd_t zc = { 0 }; 3485168404Spjd int ret; 3486168404Spjd char errbuf[1024]; 3487168404Spjd 3488168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3489168404Spjd "cannot snapshot '%s'"), path); 3490168404Spjd 3491168404Spjd /* validate the target name */ 3492185029Spjd if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3493168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3494168404Spjd 3495185029Spjd if (props) { 3496185029Spjd if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3497185029Spjd props, B_FALSE, NULL, errbuf)) == NULL) 3498185029Spjd return (-1); 3499185029Spjd 3500185029Spjd if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 3501185029Spjd nvlist_free(props); 3502185029Spjd return (-1); 3503185029Spjd } 3504185029Spjd 3505185029Spjd nvlist_free(props); 3506185029Spjd } 3507185029Spjd 3508168404Spjd /* make sure the parent exists and is of the appropriate type */ 3509168404Spjd delim = strchr(path, '@'); 3510168404Spjd (void) strncpy(parent, path, delim - path); 3511168404Spjd parent[delim - path] = '\0'; 3512168404Spjd 3513168404Spjd if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM | 3514168404Spjd ZFS_TYPE_VOLUME)) == NULL) { 3515185029Spjd zcmd_free_nvlists(&zc); 3516168404Spjd return (-1); 3517168404Spjd } 3518168404Spjd 3519168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3520168404Spjd (void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value)); 3521185029Spjd if (ZFS_IS_VOLUME(zhp)) 3522185029Spjd zc.zc_objset_type = DMU_OST_ZVOL; 3523185029Spjd else 3524185029Spjd zc.zc_objset_type = DMU_OST_ZFS; 3525168404Spjd zc.zc_cookie = recursive; 3526185029Spjd ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc); 3527168404Spjd 3528185029Spjd zcmd_free_nvlists(&zc); 3529185029Spjd 3530168404Spjd /* 3531168404Spjd * if it was recursive, the one that actually failed will be in 3532168404Spjd * zc.zc_name. 3533168404Spjd */ 3534185029Spjd if (ret != 0) 3535185029Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3536185029Spjd "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value); 3537185029Spjd 3538168404Spjd if (ret == 0 && recursive) { 3539168676Spjd struct createdata cd; 3540168676Spjd 3541168676Spjd cd.cd_snapname = delim + 1; 3542168676Spjd cd.cd_ifexists = B_FALSE; 3543168676Spjd (void) zfs_iter_filesystems(zhp, zfs_create_link_cb, &cd); 3544168404Spjd } 3545168404Spjd if (ret == 0 && zhp->zfs_type == ZFS_TYPE_VOLUME) { 3546168404Spjd ret = zvol_create_link(zhp->zfs_hdl, path); 3547168404Spjd if (ret != 0) { 3548185029Spjd (void) zfs_standard_error(hdl, errno, 3549185029Spjd dgettext(TEXT_DOMAIN, 3550185029Spjd "Volume successfully snapshotted, but device links " 3551185029Spjd "were not created")); 3552185029Spjd zfs_close(zhp); 3553185029Spjd return (-1); 3554168404Spjd } 3555168404Spjd } 3556168404Spjd 3557168404Spjd if (ret != 0) 3558168404Spjd (void) zfs_standard_error(hdl, errno, errbuf); 3559168404Spjd 3560168404Spjd zfs_close(zhp); 3561168404Spjd 3562168404Spjd return (ret); 3563168404Spjd} 3564168404Spjd 3565168404Spjd/* 3566168404Spjd * Destroy any more recent snapshots. We invoke this callback on any dependents 3567168404Spjd * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3568168404Spjd * is a dependent and we should just destroy it without checking the transaction 3569168404Spjd * group. 3570168404Spjd */ 3571168404Spjdtypedef struct rollback_data { 3572168404Spjd const char *cb_target; /* the snapshot */ 3573168404Spjd uint64_t cb_create; /* creation time reference */ 3574185029Spjd boolean_t cb_error; 3575168404Spjd boolean_t cb_dependent; 3576185029Spjd boolean_t cb_force; 3577168404Spjd} rollback_data_t; 3578168404Spjd 3579168404Spjdstatic int 3580168404Spjdrollback_destroy(zfs_handle_t *zhp, void *data) 3581168404Spjd{ 3582168404Spjd rollback_data_t *cbp = data; 3583168404Spjd 3584168404Spjd if (!cbp->cb_dependent) { 3585168404Spjd if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 && 3586168404Spjd zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 3587168404Spjd zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 3588168404Spjd cbp->cb_create) { 3589185029Spjd char *logstr; 3590168404Spjd 3591168404Spjd cbp->cb_dependent = B_TRUE; 3592185029Spjd cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3593185029Spjd rollback_destroy, cbp); 3594168404Spjd cbp->cb_dependent = B_FALSE; 3595168404Spjd 3596185029Spjd logstr = zhp->zfs_hdl->libzfs_log_str; 3597185029Spjd zhp->zfs_hdl->libzfs_log_str = NULL; 3598185029Spjd cbp->cb_error |= zfs_destroy(zhp); 3599185029Spjd zhp->zfs_hdl->libzfs_log_str = logstr; 3600168404Spjd } 3601168404Spjd } else { 3602185029Spjd /* We must destroy this clone; first unmount it */ 3603185029Spjd prop_changelist_t *clp; 3604185029Spjd 3605185029Spjd clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3606185029Spjd cbp->cb_force ? MS_FORCE: 0); 3607185029Spjd if (clp == NULL || changelist_prefix(clp) != 0) { 3608185029Spjd cbp->cb_error = B_TRUE; 3609185029Spjd zfs_close(zhp); 3610185029Spjd return (0); 3611185029Spjd } 3612168404Spjd if (zfs_destroy(zhp) != 0) 3613185029Spjd cbp->cb_error = B_TRUE; 3614168404Spjd else 3615185029Spjd changelist_remove(clp, zhp->zfs_name); 3616185029Spjd (void) changelist_postfix(clp); 3617185029Spjd changelist_free(clp); 3618168404Spjd } 3619168404Spjd 3620168404Spjd zfs_close(zhp); 3621168404Spjd return (0); 3622168404Spjd} 3623168404Spjd 3624168404Spjd/* 3625168404Spjd * Given a dataset, rollback to a specific snapshot, discarding any 3626168404Spjd * data changes since then and making it the active dataset. 3627168404Spjd * 3628168404Spjd * Any snapshots more recent than the target are destroyed, along with 3629168404Spjd * their dependents. 3630168404Spjd */ 3631168404Spjdint 3632185029Spjdzfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3633168404Spjd{ 3634168404Spjd rollback_data_t cb = { 0 }; 3635185029Spjd int err; 3636185029Spjd zfs_cmd_t zc = { 0 }; 3637185029Spjd boolean_t restore_resv = 0; 3638185029Spjd uint64_t old_volsize, new_volsize; 3639185029Spjd zfs_prop_t resv_prop; 3640168404Spjd 3641185029Spjd assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3642185029Spjd zhp->zfs_type == ZFS_TYPE_VOLUME); 3643168404Spjd 3644168404Spjd /* 3645168404Spjd * Destroy all recent snapshots and its dependends. 3646168404Spjd */ 3647185029Spjd cb.cb_force = force; 3648168404Spjd cb.cb_target = snap->zfs_name; 3649168404Spjd cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3650168404Spjd (void) zfs_iter_children(zhp, rollback_destroy, &cb); 3651168404Spjd 3652185029Spjd if (cb.cb_error) 3653185029Spjd return (-1); 3654168404Spjd 3655168404Spjd /* 3656168404Spjd * Now that we have verified that the snapshot is the latest, 3657168404Spjd * rollback to the given snapshot. 3658168404Spjd */ 3659168404Spjd 3660185029Spjd if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3661185029Spjd if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) 3662185029Spjd return (-1); 3663185029Spjd if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3664185029Spjd return (-1); 3665185029Spjd old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3666185029Spjd restore_resv = 3667185029Spjd (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3668168404Spjd } 3669168404Spjd 3670185029Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3671185029Spjd 3672185029Spjd if (ZFS_IS_VOLUME(zhp)) 3673185029Spjd zc.zc_objset_type = DMU_OST_ZVOL; 3674185029Spjd else 3675185029Spjd zc.zc_objset_type = DMU_OST_ZFS; 3676185029Spjd 3677168404Spjd /* 3678185029Spjd * We rely on zfs_iter_children() to verify that there are no 3679185029Spjd * newer snapshots for the given dataset. Therefore, we can 3680185029Spjd * simply pass the name on to the ioctl() call. There is still 3681185029Spjd * an unlikely race condition where the user has taken a 3682185029Spjd * snapshot since we verified that this was the most recent. 3683185029Spjd * 3684168404Spjd */ 3685185029Spjd if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) { 3686185029Spjd (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3687185029Spjd dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3688185029Spjd zhp->zfs_name); 3689185029Spjd return (err); 3690185029Spjd } 3691168404Spjd 3692185029Spjd /* 3693185029Spjd * For volumes, if the pre-rollback volsize matched the pre- 3694185029Spjd * rollback reservation and the volsize has changed then set 3695185029Spjd * the reservation property to the post-rollback volsize. 3696185029Spjd * Make a new handle since the rollback closed the dataset. 3697185029Spjd */ 3698185029Spjd if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3699185029Spjd (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3700185029Spjd if (err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name)) { 3701185029Spjd zfs_close(zhp); 3702185029Spjd return (err); 3703185029Spjd } 3704185029Spjd if (restore_resv) { 3705185029Spjd new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3706185029Spjd if (old_volsize != new_volsize) 3707185029Spjd err = zfs_prop_set_int(zhp, resv_prop, 3708185029Spjd new_volsize); 3709185029Spjd } 3710185029Spjd zfs_close(zhp); 3711185029Spjd } 3712185029Spjd return (err); 3713168404Spjd} 3714168404Spjd 3715168404Spjd/* 3716168404Spjd * Iterate over all dependents for a given dataset. This includes both 3717168404Spjd * hierarchical dependents (children) and data dependents (snapshots and 3718168404Spjd * clones). The bulk of the processing occurs in get_dependents() in 3719168404Spjd * libzfs_graph.c. 3720168404Spjd */ 3721168404Spjdint 3722168404Spjdzfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion, 3723168404Spjd zfs_iter_f func, void *data) 3724168404Spjd{ 3725168404Spjd char **dependents; 3726168404Spjd size_t count; 3727168404Spjd int i; 3728168404Spjd zfs_handle_t *child; 3729168404Spjd int ret = 0; 3730168404Spjd 3731168404Spjd if (get_dependents(zhp->zfs_hdl, allowrecursion, zhp->zfs_name, 3732168404Spjd &dependents, &count) != 0) 3733168404Spjd return (-1); 3734168404Spjd 3735168404Spjd for (i = 0; i < count; i++) { 3736168404Spjd if ((child = make_dataset_handle(zhp->zfs_hdl, 3737168404Spjd dependents[i])) == NULL) 3738168404Spjd continue; 3739168404Spjd 3740168404Spjd if ((ret = func(child, data)) != 0) 3741168404Spjd break; 3742168404Spjd } 3743168404Spjd 3744168404Spjd for (i = 0; i < count; i++) 3745168404Spjd free(dependents[i]); 3746168404Spjd free(dependents); 3747168404Spjd 3748168404Spjd return (ret); 3749168404Spjd} 3750168404Spjd 3751168404Spjd/* 3752168404Spjd * Renames the given dataset. 3753168404Spjd */ 3754168404Spjdint 3755185029Spjdzfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) 3756168404Spjd{ 3757168404Spjd int ret; 3758168404Spjd zfs_cmd_t zc = { 0 }; 3759168404Spjd char *delim; 3760168676Spjd prop_changelist_t *cl = NULL; 3761168676Spjd zfs_handle_t *zhrp = NULL; 3762168676Spjd char *parentname = NULL; 3763168404Spjd char parent[ZFS_MAXNAMELEN]; 3764168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 3765168404Spjd char errbuf[1024]; 3766168404Spjd 3767168404Spjd /* if we have the same exact name, just return success */ 3768168404Spjd if (strcmp(zhp->zfs_name, target) == 0) 3769168404Spjd return (0); 3770168404Spjd 3771168404Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3772168404Spjd "cannot rename to '%s'"), target); 3773168404Spjd 3774168404Spjd /* 3775168404Spjd * Make sure the target name is valid 3776168404Spjd */ 3777168404Spjd if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3778168404Spjd if ((strchr(target, '@') == NULL) || 3779168404Spjd *target == '@') { 3780168404Spjd /* 3781168404Spjd * Snapshot target name is abbreviated, 3782168404Spjd * reconstruct full dataset name 3783168404Spjd */ 3784168404Spjd (void) strlcpy(parent, zhp->zfs_name, 3785168404Spjd sizeof (parent)); 3786168404Spjd delim = strchr(parent, '@'); 3787168404Spjd if (strchr(target, '@') == NULL) 3788168404Spjd *(++delim) = '\0'; 3789168404Spjd else 3790168404Spjd *delim = '\0'; 3791168404Spjd (void) strlcat(parent, target, sizeof (parent)); 3792168404Spjd target = parent; 3793168404Spjd } else { 3794168404Spjd /* 3795168404Spjd * Make sure we're renaming within the same dataset. 3796168404Spjd */ 3797168404Spjd delim = strchr(target, '@'); 3798168404Spjd if (strncmp(zhp->zfs_name, target, delim - target) 3799168404Spjd != 0 || zhp->zfs_name[delim - target] != '@') { 3800168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3801168404Spjd "snapshots must be part of same " 3802168404Spjd "dataset")); 3803168404Spjd return (zfs_error(hdl, EZFS_CROSSTARGET, 3804168404Spjd errbuf)); 3805168404Spjd } 3806168404Spjd } 3807185029Spjd if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3808168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3809168404Spjd } else { 3810168676Spjd if (recursive) { 3811168676Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3812168676Spjd "recursive rename must be a snapshot")); 3813168676Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3814168676Spjd } 3815168676Spjd 3816185029Spjd if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3817168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3818168404Spjd uint64_t unused; 3819168404Spjd 3820168404Spjd /* validate parents */ 3821185029Spjd if (check_parents(hdl, target, &unused, B_FALSE, NULL) != 0) 3822168404Spjd return (-1); 3823168404Spjd 3824168404Spjd (void) parent_name(target, parent, sizeof (parent)); 3825168404Spjd 3826168404Spjd /* make sure we're in the same pool */ 3827168404Spjd verify((delim = strchr(target, '/')) != NULL); 3828168404Spjd if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3829168404Spjd zhp->zfs_name[delim - target] != '/') { 3830168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3831168404Spjd "datasets must be within same pool")); 3832168404Spjd return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3833168404Spjd } 3834168404Spjd 3835168404Spjd /* new name cannot be a child of the current dataset name */ 3836168404Spjd if (strncmp(parent, zhp->zfs_name, 3837168404Spjd strlen(zhp->zfs_name)) == 0) { 3838168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3839168404Spjd "New dataset name cannot be a descendent of " 3840168404Spjd "current dataset name")); 3841168404Spjd return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3842168404Spjd } 3843168404Spjd } 3844168404Spjd 3845168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 3846168404Spjd dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3847168404Spjd 3848168404Spjd if (getzoneid() == GLOBAL_ZONEID && 3849168404Spjd zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3850168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3851168404Spjd "dataset is used in a non-global zone")); 3852168404Spjd return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3853168404Spjd } 3854168404Spjd 3855168676Spjd if (recursive) { 3856168676Spjd struct destroydata dd; 3857168404Spjd 3858185029Spjd parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3859185029Spjd if (parentname == NULL) { 3860185029Spjd ret = -1; 3861185029Spjd goto error; 3862185029Spjd } 3863168676Spjd delim = strchr(parentname, '@'); 3864168676Spjd *delim = '\0'; 3865185029Spjd zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3866168676Spjd if (zhrp == NULL) { 3867185029Spjd ret = -1; 3868185029Spjd goto error; 3869168676Spjd } 3870168676Spjd 3871168676Spjd dd.snapname = delim + 1; 3872168676Spjd dd.gotone = B_FALSE; 3873185029Spjd dd.closezhp = B_TRUE; 3874168676Spjd 3875168676Spjd /* We remove any zvol links prior to renaming them */ 3876168676Spjd ret = zfs_iter_filesystems(zhrp, zfs_remove_link_cb, &dd); 3877168676Spjd if (ret) { 3878168676Spjd goto error; 3879168676Spjd } 3880168676Spjd } else { 3881185029Spjd if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0)) == NULL) 3882168676Spjd return (-1); 3883168676Spjd 3884168676Spjd if (changelist_haszonedchild(cl)) { 3885168676Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3886168676Spjd "child dataset with inherited mountpoint is used " 3887168676Spjd "in a non-global zone")); 3888168676Spjd (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3889168676Spjd goto error; 3890168676Spjd } 3891168676Spjd 3892168676Spjd if ((ret = changelist_prefix(cl)) != 0) 3893168676Spjd goto error; 3894168404Spjd } 3895168404Spjd 3896168404Spjd if (ZFS_IS_VOLUME(zhp)) 3897168404Spjd zc.zc_objset_type = DMU_OST_ZVOL; 3898168404Spjd else 3899168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 3900168404Spjd 3901168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3902168404Spjd (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3903168404Spjd 3904168676Spjd zc.zc_cookie = recursive; 3905168676Spjd 3906185029Spjd if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3907168676Spjd /* 3908168676Spjd * if it was recursive, the one that actually failed will 3909168676Spjd * be in zc.zc_name 3910168676Spjd */ 3911168676Spjd (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3912185029Spjd "cannot rename '%s'"), zc.zc_name); 3913168404Spjd 3914168676Spjd if (recursive && errno == EEXIST) { 3915168676Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3916168676Spjd "a child dataset already has a snapshot " 3917168676Spjd "with the new name")); 3918185029Spjd (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3919168676Spjd } else { 3920168676Spjd (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3921168676Spjd } 3922168676Spjd 3923168404Spjd /* 3924168404Spjd * On failure, we still want to remount any filesystems that 3925168404Spjd * were previously mounted, so we don't alter the system state. 3926168404Spjd */ 3927168676Spjd if (recursive) { 3928168676Spjd struct createdata cd; 3929168676Spjd 3930168676Spjd /* only create links for datasets that had existed */ 3931168676Spjd cd.cd_snapname = delim + 1; 3932168676Spjd cd.cd_ifexists = B_TRUE; 3933168676Spjd (void) zfs_iter_filesystems(zhrp, zfs_create_link_cb, 3934168676Spjd &cd); 3935168676Spjd } else { 3936168676Spjd (void) changelist_postfix(cl); 3937168676Spjd } 3938168404Spjd } else { 3939168676Spjd if (recursive) { 3940168676Spjd struct createdata cd; 3941168404Spjd 3942168676Spjd /* only create links for datasets that had existed */ 3943168676Spjd cd.cd_snapname = strchr(target, '@') + 1; 3944168676Spjd cd.cd_ifexists = B_TRUE; 3945168676Spjd ret = zfs_iter_filesystems(zhrp, zfs_create_link_cb, 3946168676Spjd &cd); 3947168676Spjd } else { 3948168676Spjd changelist_rename(cl, zfs_get_name(zhp), target); 3949168676Spjd ret = changelist_postfix(cl); 3950168676Spjd } 3951168404Spjd } 3952168404Spjd 3953168404Spjderror: 3954168676Spjd if (parentname) { 3955168676Spjd free(parentname); 3956168676Spjd } 3957168676Spjd if (zhrp) { 3958168676Spjd zfs_close(zhrp); 3959168676Spjd } 3960168676Spjd if (cl) { 3961168676Spjd changelist_free(cl); 3962168676Spjd } 3963168404Spjd return (ret); 3964168404Spjd} 3965168404Spjd 3966168404Spjd/* 3967168404Spjd * Given a zvol dataset, issue the ioctl to create the appropriate minor node, 3968168404Spjd * poke devfsadm to create the /dev link, and then wait for the link to appear. 3969168404Spjd */ 3970168404Spjdint 3971168404Spjdzvol_create_link(libzfs_handle_t *hdl, const char *dataset) 3972168404Spjd{ 3973168676Spjd return (zvol_create_link_common(hdl, dataset, B_FALSE)); 3974168676Spjd} 3975168676Spjd 3976168676Spjdstatic int 3977168676Spjdzvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) 3978168676Spjd{ 3979168404Spjd zfs_cmd_t zc = { 0 }; 3980168404Spjd#if 0 3981168404Spjd di_devlink_handle_t dhdl; 3982185029Spjd priv_set_t *priv_effective; 3983185029Spjd int privileged; 3984168404Spjd#endif 3985168404Spjd 3986168404Spjd (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 3987168404Spjd 3988168404Spjd /* 3989168404Spjd * Issue the appropriate ioctl. 3990168404Spjd */ 3991168404Spjd if (ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE_MINOR, &zc) != 0) { 3992168404Spjd switch (errno) { 3993168404Spjd case EEXIST: 3994168404Spjd /* 3995168404Spjd * Silently ignore the case where the link already 3996168404Spjd * exists. This allows 'zfs volinit' to be run multiple 3997168404Spjd * times without errors. 3998168404Spjd */ 3999168404Spjd return (0); 4000168404Spjd 4001168676Spjd case ENOENT: 4002168676Spjd /* 4003168676Spjd * Dataset does not exist in the kernel. If we 4004168676Spjd * don't care (see zfs_rename), then ignore the 4005168676Spjd * error quietly. 4006168676Spjd */ 4007168676Spjd if (ifexists) { 4008168676Spjd return (0); 4009168676Spjd } 4010168676Spjd 4011168676Spjd /* FALLTHROUGH */ 4012168676Spjd 4013168404Spjd default: 4014168404Spjd return (zfs_standard_error_fmt(hdl, errno, 4015168404Spjd dgettext(TEXT_DOMAIN, "cannot create device links " 4016168404Spjd "for '%s'"), dataset)); 4017168404Spjd } 4018168404Spjd } 4019168404Spjd 4020168404Spjd#if 0 4021168404Spjd /* 4022185029Spjd * If privileged call devfsadm and wait for the links to 4023185029Spjd * magically appear. 4024185029Spjd * Otherwise, print out an informational message. 4025168404Spjd */ 4026185029Spjd 4027185029Spjd priv_effective = priv_allocset(); 4028185029Spjd (void) getppriv(PRIV_EFFECTIVE, priv_effective); 4029185029Spjd privileged = (priv_isfullset(priv_effective) == B_TRUE); 4030185029Spjd priv_freeset(priv_effective); 4031185029Spjd 4032185029Spjd if (privileged) { 4033185029Spjd if ((dhdl = di_devlink_init(ZFS_DRIVER, 4034185029Spjd DI_MAKE_LINK)) == NULL) { 4035185029Spjd zfs_error_aux(hdl, strerror(errno)); 4036185029Spjd (void) zfs_error_fmt(hdl, errno, 4037185029Spjd dgettext(TEXT_DOMAIN, "cannot create device links " 4038185029Spjd "for '%s'"), dataset); 4039185029Spjd (void) ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc); 4040185029Spjd return (-1); 4041185029Spjd } else { 4042185029Spjd (void) di_devlink_fini(&dhdl); 4043185029Spjd } 4044168404Spjd } else { 4045185029Spjd char pathname[MAXPATHLEN]; 4046185029Spjd struct stat64 statbuf; 4047185029Spjd int i; 4048185029Spjd 4049185029Spjd#define MAX_WAIT 10 4050185029Spjd 4051185029Spjd /* 4052185029Spjd * This is the poor mans way of waiting for the link 4053185029Spjd * to show up. If after 10 seconds we still don't 4054185029Spjd * have it, then print out a message. 4055185029Spjd */ 4056185029Spjd (void) snprintf(pathname, sizeof (pathname), "/dev/zvol/dsk/%s", 4057185029Spjd dataset); 4058185029Spjd 4059185029Spjd for (i = 0; i != MAX_WAIT; i++) { 4060185029Spjd if (stat64(pathname, &statbuf) == 0) 4061185029Spjd break; 4062185029Spjd (void) sleep(1); 4063185029Spjd } 4064185029Spjd if (i == MAX_WAIT) 4065185029Spjd (void) printf(gettext("%s may not be immediately " 4066185029Spjd "available\n"), pathname); 4067168404Spjd } 4068168404Spjd#endif 4069168404Spjd 4070168404Spjd return (0); 4071168404Spjd} 4072168404Spjd 4073168404Spjd/* 4074168404Spjd * Remove a minor node for the given zvol and the associated /dev links. 4075168404Spjd */ 4076168404Spjdint 4077168404Spjdzvol_remove_link(libzfs_handle_t *hdl, const char *dataset) 4078168404Spjd{ 4079168404Spjd zfs_cmd_t zc = { 0 }; 4080168404Spjd 4081168404Spjd (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4082168404Spjd 4083168404Spjd if (ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc) != 0) { 4084168404Spjd switch (errno) { 4085168404Spjd case ENXIO: 4086168404Spjd /* 4087168404Spjd * Silently ignore the case where the link no longer 4088168404Spjd * exists, so that 'zfs volfini' can be run multiple 4089168404Spjd * times without errors. 4090168404Spjd */ 4091168404Spjd return (0); 4092168404Spjd 4093168404Spjd default: 4094168404Spjd return (zfs_standard_error_fmt(hdl, errno, 4095168404Spjd dgettext(TEXT_DOMAIN, "cannot remove device " 4096168404Spjd "links for '%s'"), dataset)); 4097168404Spjd } 4098168404Spjd } 4099168404Spjd 4100168404Spjd return (0); 4101168404Spjd} 4102168404Spjd 4103168404Spjdnvlist_t * 4104168404Spjdzfs_get_user_props(zfs_handle_t *zhp) 4105168404Spjd{ 4106168404Spjd return (zhp->zfs_user_props); 4107168404Spjd} 4108168404Spjd 4109168404Spjd/* 4110168404Spjd * This function is used by 'zfs list' to determine the exact set of columns to 4111168404Spjd * display, and their maximum widths. This does two main things: 4112168404Spjd * 4113168404Spjd * - If this is a list of all properties, then expand the list to include 4114168404Spjd * all native properties, and set a flag so that for each dataset we look 4115168404Spjd * for new unique user properties and add them to the list. 4116168404Spjd * 4117168404Spjd * - For non fixed-width properties, keep track of the maximum width seen 4118168404Spjd * so that we can size the column appropriately. 4119168404Spjd */ 4120168404Spjdint 4121185029Spjdzfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp) 4122168404Spjd{ 4123168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 4124185029Spjd zprop_list_t *entry; 4125185029Spjd zprop_list_t **last, **start; 4126168404Spjd nvlist_t *userprops, *propval; 4127168404Spjd nvpair_t *elem; 4128168404Spjd char *strval; 4129168404Spjd char buf[ZFS_MAXPROPLEN]; 4130168404Spjd 4131185029Spjd if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4132168404Spjd return (-1); 4133168404Spjd 4134168404Spjd userprops = zfs_get_user_props(zhp); 4135168404Spjd 4136168404Spjd entry = *plp; 4137168404Spjd if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4138168404Spjd /* 4139168404Spjd * Go through and add any user properties as necessary. We 4140168404Spjd * start by incrementing our list pointer to the first 4141168404Spjd * non-native property. 4142168404Spjd */ 4143168404Spjd start = plp; 4144168404Spjd while (*start != NULL) { 4145185029Spjd if ((*start)->pl_prop == ZPROP_INVAL) 4146168404Spjd break; 4147168404Spjd start = &(*start)->pl_next; 4148168404Spjd } 4149168404Spjd 4150168404Spjd elem = NULL; 4151168404Spjd while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4152168404Spjd /* 4153168404Spjd * See if we've already found this property in our list. 4154168404Spjd */ 4155168404Spjd for (last = start; *last != NULL; 4156168404Spjd last = &(*last)->pl_next) { 4157168404Spjd if (strcmp((*last)->pl_user_prop, 4158168404Spjd nvpair_name(elem)) == 0) 4159168404Spjd break; 4160168404Spjd } 4161168404Spjd 4162168404Spjd if (*last == NULL) { 4163168404Spjd if ((entry = zfs_alloc(hdl, 4164185029Spjd sizeof (zprop_list_t))) == NULL || 4165168404Spjd ((entry->pl_user_prop = zfs_strdup(hdl, 4166168404Spjd nvpair_name(elem)))) == NULL) { 4167168404Spjd free(entry); 4168168404Spjd return (-1); 4169168404Spjd } 4170168404Spjd 4171185029Spjd entry->pl_prop = ZPROP_INVAL; 4172168404Spjd entry->pl_width = strlen(nvpair_name(elem)); 4173168404Spjd entry->pl_all = B_TRUE; 4174168404Spjd *last = entry; 4175168404Spjd } 4176168404Spjd } 4177168404Spjd } 4178168404Spjd 4179168404Spjd /* 4180168404Spjd * Now go through and check the width of any non-fixed columns 4181168404Spjd */ 4182168404Spjd for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4183168404Spjd if (entry->pl_fixed) 4184168404Spjd continue; 4185168404Spjd 4186185029Spjd if (entry->pl_prop != ZPROP_INVAL) { 4187168404Spjd if (zfs_prop_get(zhp, entry->pl_prop, 4188168404Spjd buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) { 4189168404Spjd if (strlen(buf) > entry->pl_width) 4190168404Spjd entry->pl_width = strlen(buf); 4191168404Spjd } 4192168404Spjd } else if (nvlist_lookup_nvlist(userprops, 4193168404Spjd entry->pl_user_prop, &propval) == 0) { 4194168404Spjd verify(nvlist_lookup_string(propval, 4195185029Spjd ZPROP_VALUE, &strval) == 0); 4196168404Spjd if (strlen(strval) > entry->pl_width) 4197168404Spjd entry->pl_width = strlen(strval); 4198168404Spjd } 4199168404Spjd } 4200168404Spjd 4201168404Spjd return (0); 4202168404Spjd} 4203168404Spjd 4204185029Spjd#ifdef TODO 4205185029Spjdint 4206185029Spjdzfs_iscsi_perm_check(libzfs_handle_t *hdl, char *dataset, ucred_t *cred) 4207185029Spjd{ 4208185029Spjd zfs_cmd_t zc = { 0 }; 4209185029Spjd nvlist_t *nvp; 4210185029Spjd gid_t gid; 4211185029Spjd uid_t uid; 4212185029Spjd const gid_t *groups; 4213185029Spjd int group_cnt; 4214185029Spjd int error; 4215185029Spjd 4216185029Spjd if (nvlist_alloc(&nvp, NV_UNIQUE_NAME, 0) != 0) 4217185029Spjd return (no_memory(hdl)); 4218185029Spjd 4219185029Spjd uid = ucred_geteuid(cred); 4220185029Spjd gid = ucred_getegid(cred); 4221185029Spjd group_cnt = ucred_getgroups(cred, &groups); 4222185029Spjd 4223185029Spjd if (uid == (uid_t)-1 || gid == (uid_t)-1 || group_cnt == (uid_t)-1) 4224185029Spjd return (1); 4225185029Spjd 4226185029Spjd if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_UID, uid) != 0) { 4227185029Spjd nvlist_free(nvp); 4228185029Spjd return (1); 4229185029Spjd } 4230185029Spjd 4231185029Spjd if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_GID, gid) != 0) { 4232185029Spjd nvlist_free(nvp); 4233185029Spjd return (1); 4234185029Spjd } 4235185029Spjd 4236185029Spjd if (nvlist_add_uint32_array(nvp, 4237185029Spjd ZFS_DELEG_PERM_GROUPS, (uint32_t *)groups, group_cnt) != 0) { 4238185029Spjd nvlist_free(nvp); 4239185029Spjd return (1); 4240185029Spjd } 4241185029Spjd (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4242185029Spjd 4243185029Spjd if (zcmd_write_src_nvlist(hdl, &zc, nvp)) 4244185029Spjd return (-1); 4245185029Spjd 4246185029Spjd error = ioctl(hdl->libzfs_fd, ZFS_IOC_ISCSI_PERM_CHECK, &zc); 4247185029Spjd nvlist_free(nvp); 4248185029Spjd return (error); 4249185029Spjd} 4250185029Spjd#endif 4251185029Spjd 4252185029Spjdint 4253185029Spjdzfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4254185029Spjd void *export, void *sharetab, int sharemax, zfs_share_op_t operation) 4255185029Spjd{ 4256185029Spjd zfs_cmd_t zc = { 0 }; 4257185029Spjd int error; 4258185029Spjd 4259185029Spjd (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4260185029Spjd (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4261185029Spjd zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4262185029Spjd zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4263185029Spjd zc.zc_share.z_sharetype = operation; 4264185029Spjd zc.zc_share.z_sharemax = sharemax; 4265185029Spjd 4266185029Spjd error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4267185029Spjd return (error); 4268185029Spjd} 4269185029Spjd 4270168404Spjd/* 4271168404Spjd * Attach/detach the given filesystem to/from the given jail. 4272168404Spjd */ 4273168404Spjdint 4274168404Spjdzfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4275168404Spjd{ 4276168404Spjd libzfs_handle_t *hdl = zhp->zfs_hdl; 4277168404Spjd zfs_cmd_t zc = { 0 }; 4278168404Spjd char errbuf[1024]; 4279168404Spjd int cmd, ret; 4280168404Spjd 4281168404Spjd if (attach) { 4282168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 4283168404Spjd dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4284168404Spjd } else { 4285168404Spjd (void) snprintf(errbuf, sizeof (errbuf), 4286168404Spjd dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4287168404Spjd } 4288168404Spjd 4289168404Spjd switch (zhp->zfs_type) { 4290168404Spjd case ZFS_TYPE_VOLUME: 4291168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4292168404Spjd "volumes can not be jailed")); 4293168404Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4294168404Spjd case ZFS_TYPE_SNAPSHOT: 4295168404Spjd zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4296168404Spjd "snapshots can not be jailed")); 4297168404Spjd return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4298168404Spjd } 4299168404Spjd assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4300168404Spjd 4301168404Spjd (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4302168404Spjd zc.zc_objset_type = DMU_OST_ZFS; 4303168404Spjd zc.zc_jailid = jailid; 4304168404Spjd 4305168404Spjd cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4306168404Spjd if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4307168404Spjd zfs_standard_error(hdl, errno, errbuf); 4308168404Spjd 4309168404Spjd return (ret); 4310168404Spjd} 4311