libzfs_util.c revision 289805
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2012 by Delphix. All rights reserved. 26 */ 27 28/* 29 * Internal utility routines for the ZFS library. 30 */ 31 32#include <sys/param.h> 33#include <sys/linker.h> 34#include <sys/module.h> 35#include <sys/stat.h> 36 37#include <errno.h> 38#include <fcntl.h> 39#include <libintl.h> 40#include <stdarg.h> 41#include <stdio.h> 42#include <stdlib.h> 43#include <strings.h> 44#include <unistd.h> 45#include <ctype.h> 46#include <math.h> 47#include <sys/mnttab.h> 48#include <sys/mntent.h> 49#include <sys/types.h> 50 51#include <libzfs.h> 52#include <libzfs_core.h> 53 54#include "libzfs_impl.h" 55#include "zfs_prop.h" 56#include "zfeature_common.h" 57 58 59int 60libzfs_errno(libzfs_handle_t *hdl) 61{ 62 return (hdl->libzfs_error); 63} 64 65const char * 66libzfs_error_action(libzfs_handle_t *hdl) 67{ 68 return (hdl->libzfs_action); 69} 70 71const char * 72libzfs_error_description(libzfs_handle_t *hdl) 73{ 74 if (hdl->libzfs_desc[0] != '\0') 75 return (hdl->libzfs_desc); 76 77 switch (hdl->libzfs_error) { 78 case EZFS_NOMEM: 79 return (dgettext(TEXT_DOMAIN, "out of memory")); 80 case EZFS_BADPROP: 81 return (dgettext(TEXT_DOMAIN, "invalid property value")); 82 case EZFS_PROPREADONLY: 83 return (dgettext(TEXT_DOMAIN, "read-only property")); 84 case EZFS_PROPTYPE: 85 return (dgettext(TEXT_DOMAIN, "property doesn't apply to " 86 "datasets of this type")); 87 case EZFS_PROPNONINHERIT: 88 return (dgettext(TEXT_DOMAIN, "property cannot be inherited")); 89 case EZFS_PROPSPACE: 90 return (dgettext(TEXT_DOMAIN, "invalid quota or reservation")); 91 case EZFS_BADTYPE: 92 return (dgettext(TEXT_DOMAIN, "operation not applicable to " 93 "datasets of this type")); 94 case EZFS_BUSY: 95 return (dgettext(TEXT_DOMAIN, "pool or dataset is busy")); 96 case EZFS_EXISTS: 97 return (dgettext(TEXT_DOMAIN, "pool or dataset exists")); 98 case EZFS_NOENT: 99 return (dgettext(TEXT_DOMAIN, "no such pool or dataset")); 100 case EZFS_BADSTREAM: 101 return (dgettext(TEXT_DOMAIN, "invalid backup stream")); 102 case EZFS_DSREADONLY: 103 return (dgettext(TEXT_DOMAIN, "dataset is read-only")); 104 case EZFS_VOLTOOBIG: 105 return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for " 106 "this system")); 107 case EZFS_INVALIDNAME: 108 return (dgettext(TEXT_DOMAIN, "invalid name")); 109 case EZFS_BADRESTORE: 110 return (dgettext(TEXT_DOMAIN, "unable to restore to " 111 "destination")); 112 case EZFS_BADBACKUP: 113 return (dgettext(TEXT_DOMAIN, "backup failed")); 114 case EZFS_BADTARGET: 115 return (dgettext(TEXT_DOMAIN, "invalid target vdev")); 116 case EZFS_NODEVICE: 117 return (dgettext(TEXT_DOMAIN, "no such device in pool")); 118 case EZFS_BADDEV: 119 return (dgettext(TEXT_DOMAIN, "invalid device")); 120 case EZFS_NOREPLICAS: 121 return (dgettext(TEXT_DOMAIN, "no valid replicas")); 122 case EZFS_RESILVERING: 123 return (dgettext(TEXT_DOMAIN, "currently resilvering")); 124 case EZFS_BADVERSION: 125 return (dgettext(TEXT_DOMAIN, "unsupported version or " 126 "feature")); 127 case EZFS_POOLUNAVAIL: 128 return (dgettext(TEXT_DOMAIN, "pool is unavailable")); 129 case EZFS_DEVOVERFLOW: 130 return (dgettext(TEXT_DOMAIN, "too many devices in one vdev")); 131 case EZFS_BADPATH: 132 return (dgettext(TEXT_DOMAIN, "must be an absolute path")); 133 case EZFS_CROSSTARGET: 134 return (dgettext(TEXT_DOMAIN, "operation crosses datasets or " 135 "pools")); 136 case EZFS_ZONED: 137 return (dgettext(TEXT_DOMAIN, "dataset in use by local zone")); 138 case EZFS_MOUNTFAILED: 139 return (dgettext(TEXT_DOMAIN, "mount failed")); 140 case EZFS_UMOUNTFAILED: 141 return (dgettext(TEXT_DOMAIN, "umount failed")); 142 case EZFS_UNSHARENFSFAILED: 143 return (dgettext(TEXT_DOMAIN, "unshare(1M) failed")); 144 case EZFS_SHARENFSFAILED: 145 return (dgettext(TEXT_DOMAIN, "share(1M) failed")); 146 case EZFS_UNSHARESMBFAILED: 147 return (dgettext(TEXT_DOMAIN, "smb remove share failed")); 148 case EZFS_SHARESMBFAILED: 149 return (dgettext(TEXT_DOMAIN, "smb add share failed")); 150 case EZFS_PERM: 151 return (dgettext(TEXT_DOMAIN, "permission denied")); 152 case EZFS_NOSPC: 153 return (dgettext(TEXT_DOMAIN, "out of space")); 154 case EZFS_FAULT: 155 return (dgettext(TEXT_DOMAIN, "bad address")); 156 case EZFS_IO: 157 return (dgettext(TEXT_DOMAIN, "I/O error")); 158 case EZFS_INTR: 159 return (dgettext(TEXT_DOMAIN, "signal received")); 160 case EZFS_ISSPARE: 161 return (dgettext(TEXT_DOMAIN, "device is reserved as a hot " 162 "spare")); 163 case EZFS_INVALCONFIG: 164 return (dgettext(TEXT_DOMAIN, "invalid vdev configuration")); 165 case EZFS_RECURSIVE: 166 return (dgettext(TEXT_DOMAIN, "recursive dataset dependency")); 167 case EZFS_NOHISTORY: 168 return (dgettext(TEXT_DOMAIN, "no history available")); 169 case EZFS_POOLPROPS: 170 return (dgettext(TEXT_DOMAIN, "failed to retrieve " 171 "pool properties")); 172 case EZFS_POOL_NOTSUP: 173 return (dgettext(TEXT_DOMAIN, "operation not supported " 174 "on this type of pool")); 175 case EZFS_POOL_INVALARG: 176 return (dgettext(TEXT_DOMAIN, "invalid argument for " 177 "this pool operation")); 178 case EZFS_NAMETOOLONG: 179 return (dgettext(TEXT_DOMAIN, "dataset name is too long")); 180 case EZFS_OPENFAILED: 181 return (dgettext(TEXT_DOMAIN, "open failed")); 182 case EZFS_NOCAP: 183 return (dgettext(TEXT_DOMAIN, 184 "disk capacity information could not be retrieved")); 185 case EZFS_LABELFAILED: 186 return (dgettext(TEXT_DOMAIN, "write of label failed")); 187 case EZFS_BADWHO: 188 return (dgettext(TEXT_DOMAIN, "invalid user/group")); 189 case EZFS_BADPERM: 190 return (dgettext(TEXT_DOMAIN, "invalid permission")); 191 case EZFS_BADPERMSET: 192 return (dgettext(TEXT_DOMAIN, "invalid permission set name")); 193 case EZFS_NODELEGATION: 194 return (dgettext(TEXT_DOMAIN, "delegated administration is " 195 "disabled on pool")); 196 case EZFS_BADCACHE: 197 return (dgettext(TEXT_DOMAIN, "invalid or missing cache file")); 198 case EZFS_ISL2CACHE: 199 return (dgettext(TEXT_DOMAIN, "device is in use as a cache")); 200 case EZFS_VDEVNOTSUP: 201 return (dgettext(TEXT_DOMAIN, "vdev specification is not " 202 "supported")); 203 case EZFS_NOTSUP: 204 return (dgettext(TEXT_DOMAIN, "operation not supported " 205 "on this dataset")); 206 case EZFS_ACTIVE_SPARE: 207 return (dgettext(TEXT_DOMAIN, "pool has active shared spare " 208 "device")); 209 case EZFS_UNPLAYED_LOGS: 210 return (dgettext(TEXT_DOMAIN, "log device has unplayed intent " 211 "logs")); 212 case EZFS_REFTAG_RELE: 213 return (dgettext(TEXT_DOMAIN, "no such tag on this dataset")); 214 case EZFS_REFTAG_HOLD: 215 return (dgettext(TEXT_DOMAIN, "tag already exists on this " 216 "dataset")); 217 case EZFS_TAGTOOLONG: 218 return (dgettext(TEXT_DOMAIN, "tag too long")); 219 case EZFS_PIPEFAILED: 220 return (dgettext(TEXT_DOMAIN, "pipe create failed")); 221 case EZFS_THREADCREATEFAILED: 222 return (dgettext(TEXT_DOMAIN, "thread create failed")); 223 case EZFS_POSTSPLIT_ONLINE: 224 return (dgettext(TEXT_DOMAIN, "disk was split from this pool " 225 "into a new one")); 226 case EZFS_SCRUBBING: 227 return (dgettext(TEXT_DOMAIN, "currently scrubbing; " 228 "use 'zpool scrub -s' to cancel current scrub")); 229 case EZFS_NO_SCRUB: 230 return (dgettext(TEXT_DOMAIN, "there is no active scrub")); 231 case EZFS_DIFF: 232 return (dgettext(TEXT_DOMAIN, "unable to generate diffs")); 233 case EZFS_DIFFDATA: 234 return (dgettext(TEXT_DOMAIN, "invalid diff data")); 235 case EZFS_POOLREADONLY: 236 return (dgettext(TEXT_DOMAIN, "pool is read-only")); 237 case EZFS_UNKNOWN: 238 return (dgettext(TEXT_DOMAIN, "unknown error")); 239 default: 240 assert(hdl->libzfs_error == 0); 241 return (dgettext(TEXT_DOMAIN, "no error")); 242 } 243} 244 245/*PRINTFLIKE2*/ 246void 247zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...) 248{ 249 va_list ap; 250 251 va_start(ap, fmt); 252 253 (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc), 254 fmt, ap); 255 hdl->libzfs_desc_active = 1; 256 257 va_end(ap); 258} 259 260static void 261zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap) 262{ 263 (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action), 264 fmt, ap); 265 hdl->libzfs_error = error; 266 267 if (hdl->libzfs_desc_active) 268 hdl->libzfs_desc_active = 0; 269 else 270 hdl->libzfs_desc[0] = '\0'; 271 272 if (hdl->libzfs_printerr) { 273 if (error == EZFS_UNKNOWN) { 274 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal " 275 "error: %s\n"), libzfs_error_description(hdl)); 276 abort(); 277 } 278 279 (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action, 280 libzfs_error_description(hdl)); 281 if (error == EZFS_NOMEM) 282 exit(1); 283 } 284} 285 286int 287zfs_error(libzfs_handle_t *hdl, int error, const char *msg) 288{ 289 return (zfs_error_fmt(hdl, error, "%s", msg)); 290} 291 292/*PRINTFLIKE3*/ 293int 294zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) 295{ 296 va_list ap; 297 298 va_start(ap, fmt); 299 300 zfs_verror(hdl, error, fmt, ap); 301 302 va_end(ap); 303 304 return (-1); 305} 306 307static int 308zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt, 309 va_list ap) 310{ 311 switch (error) { 312 case EPERM: 313 case EACCES: 314 zfs_verror(hdl, EZFS_PERM, fmt, ap); 315 return (-1); 316 317 case ECANCELED: 318 zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap); 319 return (-1); 320 321 case EIO: 322 zfs_verror(hdl, EZFS_IO, fmt, ap); 323 return (-1); 324 325 case EFAULT: 326 zfs_verror(hdl, EZFS_FAULT, fmt, ap); 327 return (-1); 328 329 case EINTR: 330 zfs_verror(hdl, EZFS_INTR, fmt, ap); 331 return (-1); 332 } 333 334 return (0); 335} 336 337int 338zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg) 339{ 340 return (zfs_standard_error_fmt(hdl, error, "%s", msg)); 341} 342 343/*PRINTFLIKE3*/ 344int 345zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) 346{ 347 va_list ap; 348 349 va_start(ap, fmt); 350 351 if (zfs_common_error(hdl, error, fmt, ap) != 0) { 352 va_end(ap); 353 return (-1); 354 } 355 356 switch (error) { 357 case ENXIO: 358 case ENODEV: 359 case EPIPE: 360 zfs_verror(hdl, EZFS_IO, fmt, ap); 361 break; 362 363 case ENOENT: 364 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 365 "dataset does not exist")); 366 zfs_verror(hdl, EZFS_NOENT, fmt, ap); 367 break; 368 369 case ENOSPC: 370 case EDQUOT: 371 zfs_verror(hdl, EZFS_NOSPC, fmt, ap); 372 va_end(ap); 373 return (-1); 374 375 case EEXIST: 376 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 377 "dataset already exists")); 378 zfs_verror(hdl, EZFS_EXISTS, fmt, ap); 379 break; 380 381 case EBUSY: 382 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 383 "dataset is busy")); 384 zfs_verror(hdl, EZFS_BUSY, fmt, ap); 385 break; 386 case EROFS: 387 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap); 388 break; 389 case ENAMETOOLONG: 390 zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap); 391 break; 392 case ENOTSUP: 393 zfs_verror(hdl, EZFS_BADVERSION, fmt, ap); 394 break; 395 case EAGAIN: 396 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 397 "pool I/O is currently suspended")); 398 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap); 399 break; 400 default: 401 zfs_error_aux(hdl, strerror(error)); 402 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); 403 break; 404 } 405 406 va_end(ap); 407 return (-1); 408} 409 410int 411zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg) 412{ 413 return (zpool_standard_error_fmt(hdl, error, "%s", msg)); 414} 415 416/*PRINTFLIKE3*/ 417int 418zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) 419{ 420 va_list ap; 421 422 va_start(ap, fmt); 423 424 if (zfs_common_error(hdl, error, fmt, ap) != 0) { 425 va_end(ap); 426 return (-1); 427 } 428 429 switch (error) { 430 case ENODEV: 431 zfs_verror(hdl, EZFS_NODEVICE, fmt, ap); 432 break; 433 434 case ENOENT: 435 zfs_error_aux(hdl, 436 dgettext(TEXT_DOMAIN, "no such pool or dataset")); 437 zfs_verror(hdl, EZFS_NOENT, fmt, ap); 438 break; 439 440 case EEXIST: 441 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 442 "pool already exists")); 443 zfs_verror(hdl, EZFS_EXISTS, fmt, ap); 444 break; 445 446 case EBUSY: 447 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy")); 448 zfs_verror(hdl, EZFS_BUSY, fmt, ap); 449 break; 450 451 case ENXIO: 452 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 453 "one or more devices is currently unavailable")); 454 zfs_verror(hdl, EZFS_BADDEV, fmt, ap); 455 break; 456 457 case ENAMETOOLONG: 458 zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap); 459 break; 460 461 case ENOTSUP: 462 zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap); 463 break; 464 465 case EINVAL: 466 zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap); 467 break; 468 469 case ENOSPC: 470 case EDQUOT: 471 zfs_verror(hdl, EZFS_NOSPC, fmt, ap); 472 va_end(ap); 473 return (-1); 474 475 case EAGAIN: 476 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 477 "pool I/O is currently suspended")); 478 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap); 479 break; 480 481 case EROFS: 482 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap); 483 break; 484 485 default: 486 zfs_error_aux(hdl, strerror(error)); 487 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); 488 } 489 490 va_end(ap); 491 return (-1); 492} 493 494/* 495 * Display an out of memory error message and abort the current program. 496 */ 497int 498no_memory(libzfs_handle_t *hdl) 499{ 500 return (zfs_error(hdl, EZFS_NOMEM, "internal error")); 501} 502 503/* 504 * A safe form of malloc() which will die if the allocation fails. 505 */ 506void * 507zfs_alloc(libzfs_handle_t *hdl, size_t size) 508{ 509 void *data; 510 511 if ((data = calloc(1, size)) == NULL) 512 (void) no_memory(hdl); 513 514 return (data); 515} 516 517/* 518 * A safe form of asprintf() which will die if the allocation fails. 519 */ 520/*PRINTFLIKE2*/ 521char * 522zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...) 523{ 524 va_list ap; 525 char *ret; 526 int err; 527 528 va_start(ap, fmt); 529 530 err = vasprintf(&ret, fmt, ap); 531 532 va_end(ap); 533 534 if (err < 0) 535 (void) no_memory(hdl); 536 537 return (ret); 538} 539 540/* 541 * A safe form of realloc(), which also zeroes newly allocated space. 542 */ 543void * 544zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize) 545{ 546 void *ret; 547 548 if ((ret = realloc(ptr, newsize)) == NULL) { 549 (void) no_memory(hdl); 550 return (NULL); 551 } 552 553 bzero((char *)ret + oldsize, (newsize - oldsize)); 554 return (ret); 555} 556 557/* 558 * A safe form of strdup() which will die if the allocation fails. 559 */ 560char * 561zfs_strdup(libzfs_handle_t *hdl, const char *str) 562{ 563 char *ret; 564 565 if ((ret = strdup(str)) == NULL) 566 (void) no_memory(hdl); 567 568 return (ret); 569} 570 571/* 572 * Convert a number to an appropriately human-readable output. 573 */ 574void 575zfs_nicenum(uint64_t num, char *buf, size_t buflen) 576{ 577 uint64_t n = num; 578 int index = 0; 579 char u; 580 581 while (n >= 1024) { 582 n /= 1024; 583 index++; 584 } 585 586 u = " KMGTPE"[index]; 587 588 if (index == 0) { 589 (void) snprintf(buf, buflen, "%llu", n); 590 } else if ((num & ((1ULL << 10 * index) - 1)) == 0) { 591 /* 592 * If this is an even multiple of the base, always display 593 * without any decimal precision. 594 */ 595 (void) snprintf(buf, buflen, "%llu%c", n, u); 596 } else { 597 /* 598 * We want to choose a precision that reflects the best choice 599 * for fitting in 5 characters. This can get rather tricky when 600 * we have numbers that are very close to an order of magnitude. 601 * For example, when displaying 10239 (which is really 9.999K), 602 * we want only a single place of precision for 10.0K. We could 603 * develop some complex heuristics for this, but it's much 604 * easier just to try each combination in turn. 605 */ 606 int i; 607 for (i = 2; i >= 0; i--) { 608 if (snprintf(buf, buflen, "%.*f%c", i, 609 (double)num / (1ULL << 10 * index), u) <= 5) 610 break; 611 } 612 } 613} 614 615void 616libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr) 617{ 618 hdl->libzfs_printerr = printerr; 619} 620 621static int 622libzfs_load(void) 623{ 624 int error; 625 626 if (modfind("zfs") < 0) { 627 /* Not present in kernel, try loading it. */ 628 if (kldload("zfs") < 0 || modfind("zfs") < 0) { 629 if (errno != EEXIST) 630 return (-1); 631 } 632 } 633 return (0); 634} 635 636libzfs_handle_t * 637libzfs_init(void) 638{ 639 libzfs_handle_t *hdl; 640 641 if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) { 642 return (NULL); 643 } 644 645 if (libzfs_load() < 0) { 646 free(hdl); 647 return (NULL); 648 } 649 650 if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) { 651 free(hdl); 652 return (NULL); 653 } 654 655 if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) { 656 (void) close(hdl->libzfs_fd); 657 free(hdl); 658 return (NULL); 659 } 660 661 hdl->libzfs_sharetab = fopen(ZFS_EXPORTS_PATH, "r"); 662 663 if (libzfs_core_init() != 0) { 664 (void) close(hdl->libzfs_fd); 665 (void) fclose(hdl->libzfs_mnttab); 666 (void) fclose(hdl->libzfs_sharetab); 667 free(hdl); 668 return (NULL); 669 } 670 671 zfs_prop_init(); 672 zpool_prop_init(); 673 zpool_feature_init(); 674 libzfs_mnttab_init(hdl); 675 676 return (hdl); 677} 678 679void 680libzfs_fini(libzfs_handle_t *hdl) 681{ 682 (void) close(hdl->libzfs_fd); 683 if (hdl->libzfs_mnttab) 684 (void) fclose(hdl->libzfs_mnttab); 685 if (hdl->libzfs_sharetab) 686 (void) fclose(hdl->libzfs_sharetab); 687 zfs_uninit_libshare(hdl); 688 zpool_free_handles(hdl); 689#ifdef sun 690 libzfs_fru_clear(hdl, B_TRUE); 691#endif 692 namespace_clear(hdl); 693 libzfs_mnttab_fini(hdl); 694 libzfs_core_fini(); 695 free(hdl); 696} 697 698libzfs_handle_t * 699zpool_get_handle(zpool_handle_t *zhp) 700{ 701 return (zhp->zpool_hdl); 702} 703 704libzfs_handle_t * 705zfs_get_handle(zfs_handle_t *zhp) 706{ 707 return (zhp->zfs_hdl); 708} 709 710zpool_handle_t * 711zfs_get_pool_handle(const zfs_handle_t *zhp) 712{ 713 return (zhp->zpool_hdl); 714} 715 716/* 717 * Given a name, determine whether or not it's a valid path 718 * (starts with '/' or "./"). If so, walk the mnttab trying 719 * to match the device number. If not, treat the path as an 720 * fs/vol/snap name. 721 */ 722zfs_handle_t * 723zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype) 724{ 725 struct stat64 statbuf; 726 struct extmnttab entry; 727 int ret; 728 729 if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) { 730 /* 731 * It's not a valid path, assume it's a name of type 'argtype'. 732 */ 733 return (zfs_open(hdl, path, argtype)); 734 } 735 736 if (stat64(path, &statbuf) != 0) { 737 (void) fprintf(stderr, "%s: %s\n", path, strerror(errno)); 738 return (NULL); 739 } 740 741#ifdef sun 742 rewind(hdl->libzfs_mnttab); 743 while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) { 744 if (makedevice(entry.mnt_major, entry.mnt_minor) == 745 statbuf.st_dev) { 746 break; 747 } 748 } 749#else 750 { 751 struct statfs sfs; 752 753 ret = statfs(path, &sfs); 754 if (ret == 0) 755 statfs2mnttab(&sfs, &entry); 756 else { 757 (void) fprintf(stderr, "%s: %s\n", path, 758 strerror(errno)); 759 } 760 } 761#endif /* sun */ 762 if (ret != 0) { 763 return (NULL); 764 } 765 766 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 767 (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"), 768 path); 769 return (NULL); 770 } 771 772 return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM)); 773} 774 775/* 776 * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from 777 * an ioctl(). 778 */ 779int 780zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len) 781{ 782 if (len == 0) 783 len = 16 * 1024; 784 zc->zc_nvlist_dst_size = len; 785 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t) 786 zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0) 787 return (-1); 788 789 return (0); 790} 791 792/* 793 * Called when an ioctl() which returns an nvlist fails with ENOMEM. This will 794 * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was 795 * filled in by the kernel to indicate the actual required size. 796 */ 797int 798zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc) 799{ 800 free((void *)(uintptr_t)zc->zc_nvlist_dst); 801 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t) 802 zfs_alloc(hdl, zc->zc_nvlist_dst_size)) 803 == 0) 804 return (-1); 805 806 return (0); 807} 808 809/* 810 * Called to free the src and dst nvlists stored in the command structure. 811 */ 812void 813zcmd_free_nvlists(zfs_cmd_t *zc) 814{ 815 free((void *)(uintptr_t)zc->zc_nvlist_conf); 816 free((void *)(uintptr_t)zc->zc_nvlist_src); 817 free((void *)(uintptr_t)zc->zc_nvlist_dst); 818} 819 820static int 821zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen, 822 nvlist_t *nvl) 823{ 824 char *packed; 825 size_t len; 826 827 verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0); 828 829 if ((packed = zfs_alloc(hdl, len)) == NULL) 830 return (-1); 831 832 verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0); 833 834 *outnv = (uint64_t)(uintptr_t)packed; 835 *outlen = len; 836 837 return (0); 838} 839 840int 841zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) 842{ 843 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf, 844 &zc->zc_nvlist_conf_size, nvl)); 845} 846 847int 848zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) 849{ 850 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src, 851 &zc->zc_nvlist_src_size, nvl)); 852} 853 854/* 855 * Unpacks an nvlist from the ZFS ioctl command structure. 856 */ 857int 858zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp) 859{ 860 if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst, 861 zc->zc_nvlist_dst_size, nvlp, 0) != 0) 862 return (no_memory(hdl)); 863 864 return (0); 865} 866 867int 868zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc) 869{ 870 return (ioctl(hdl->libzfs_fd, request, zc)); 871} 872 873/* 874 * ================================================================ 875 * API shared by zfs and zpool property management 876 * ================================================================ 877 */ 878 879static void 880zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type) 881{ 882 zprop_list_t *pl = cbp->cb_proplist; 883 int i; 884 char *title; 885 size_t len; 886 887 cbp->cb_first = B_FALSE; 888 if (cbp->cb_scripted) 889 return; 890 891 /* 892 * Start with the length of the column headers. 893 */ 894 cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME")); 895 cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN, 896 "PROPERTY")); 897 cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN, 898 "VALUE")); 899 cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN, 900 "RECEIVED")); 901 cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN, 902 "SOURCE")); 903 904 /* first property is always NAME */ 905 assert(cbp->cb_proplist->pl_prop == 906 ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ZFS_PROP_NAME)); 907 908 /* 909 * Go through and calculate the widths for each column. For the 910 * 'source' column, we kludge it up by taking the worst-case scenario of 911 * inheriting from the longest name. This is acceptable because in the 912 * majority of cases 'SOURCE' is the last column displayed, and we don't 913 * use the width anyway. Note that the 'VALUE' column can be oversized, 914 * if the name of the property is much longer than any values we find. 915 */ 916 for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) { 917 /* 918 * 'PROPERTY' column 919 */ 920 if (pl->pl_prop != ZPROP_INVAL) { 921 const char *propname = (type == ZFS_TYPE_POOL) ? 922 zpool_prop_to_name(pl->pl_prop) : 923 zfs_prop_to_name(pl->pl_prop); 924 925 len = strlen(propname); 926 if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) 927 cbp->cb_colwidths[GET_COL_PROPERTY] = len; 928 } else { 929 len = strlen(pl->pl_user_prop); 930 if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) 931 cbp->cb_colwidths[GET_COL_PROPERTY] = len; 932 } 933 934 /* 935 * 'VALUE' column. The first property is always the 'name' 936 * property that was tacked on either by /sbin/zfs's 937 * zfs_do_get() or when calling zprop_expand_list(), so we 938 * ignore its width. If the user specified the name property 939 * to display, then it will be later in the list in any case. 940 */ 941 if (pl != cbp->cb_proplist && 942 pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE]) 943 cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width; 944 945 /* 'RECEIVED' column. */ 946 if (pl != cbp->cb_proplist && 947 pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD]) 948 cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width; 949 950 /* 951 * 'NAME' and 'SOURCE' columns 952 */ 953 if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME : 954 ZFS_PROP_NAME) && 955 pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) { 956 cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width; 957 cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width + 958 strlen(dgettext(TEXT_DOMAIN, "inherited from")); 959 } 960 } 961 962 /* 963 * Now go through and print the headers. 964 */ 965 for (i = 0; i < ZFS_GET_NCOLS; i++) { 966 switch (cbp->cb_columns[i]) { 967 case GET_COL_NAME: 968 title = dgettext(TEXT_DOMAIN, "NAME"); 969 break; 970 case GET_COL_PROPERTY: 971 title = dgettext(TEXT_DOMAIN, "PROPERTY"); 972 break; 973 case GET_COL_VALUE: 974 title = dgettext(TEXT_DOMAIN, "VALUE"); 975 break; 976 case GET_COL_RECVD: 977 title = dgettext(TEXT_DOMAIN, "RECEIVED"); 978 break; 979 case GET_COL_SOURCE: 980 title = dgettext(TEXT_DOMAIN, "SOURCE"); 981 break; 982 default: 983 title = NULL; 984 } 985 986 if (title != NULL) { 987 if (i == (ZFS_GET_NCOLS - 1) || 988 cbp->cb_columns[i + 1] == GET_COL_NONE) 989 (void) printf("%s", title); 990 else 991 (void) printf("%-*s ", 992 cbp->cb_colwidths[cbp->cb_columns[i]], 993 title); 994 } 995 } 996 (void) printf("\n"); 997} 998 999/* 1000 * Display a single line of output, according to the settings in the callback 1001 * structure. 1002 */ 1003void 1004zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp, 1005 const char *propname, const char *value, zprop_source_t sourcetype, 1006 const char *source, const char *recvd_value) 1007{ 1008 int i; 1009 const char *str; 1010 char buf[128]; 1011 1012 /* 1013 * Ignore those source types that the user has chosen to ignore. 1014 */ 1015 if ((sourcetype & cbp->cb_sources) == 0) 1016 return; 1017 1018 if (cbp->cb_first) 1019 zprop_print_headers(cbp, cbp->cb_type); 1020 1021 for (i = 0; i < ZFS_GET_NCOLS; i++) { 1022 switch (cbp->cb_columns[i]) { 1023 case GET_COL_NAME: 1024 str = name; 1025 break; 1026 1027 case GET_COL_PROPERTY: 1028 str = propname; 1029 break; 1030 1031 case GET_COL_VALUE: 1032 str = value; 1033 break; 1034 1035 case GET_COL_SOURCE: 1036 switch (sourcetype) { 1037 case ZPROP_SRC_NONE: 1038 str = "-"; 1039 break; 1040 1041 case ZPROP_SRC_DEFAULT: 1042 str = "default"; 1043 break; 1044 1045 case ZPROP_SRC_LOCAL: 1046 str = "local"; 1047 break; 1048 1049 case ZPROP_SRC_TEMPORARY: 1050 str = "temporary"; 1051 break; 1052 1053 case ZPROP_SRC_INHERITED: 1054 (void) snprintf(buf, sizeof (buf), 1055 "inherited from %s", source); 1056 str = buf; 1057 break; 1058 case ZPROP_SRC_RECEIVED: 1059 str = "received"; 1060 break; 1061 } 1062 break; 1063 1064 case GET_COL_RECVD: 1065 str = (recvd_value == NULL ? "-" : recvd_value); 1066 break; 1067 1068 default: 1069 continue; 1070 } 1071 1072 if (cbp->cb_columns[i + 1] == GET_COL_NONE) 1073 (void) printf("%s", str); 1074 else if (cbp->cb_scripted) 1075 (void) printf("%s\t", str); 1076 else 1077 (void) printf("%-*s ", 1078 cbp->cb_colwidths[cbp->cb_columns[i]], 1079 str); 1080 } 1081 1082 (void) printf("\n"); 1083} 1084 1085/* 1086 * Given a numeric suffix, convert the value into a number of bits that the 1087 * resulting value must be shifted. 1088 */ 1089static int 1090str2shift(libzfs_handle_t *hdl, const char *buf) 1091{ 1092 const char *ends = "BKMGTPEZ"; 1093 int i; 1094 1095 if (buf[0] == '\0') 1096 return (0); 1097 for (i = 0; i < strlen(ends); i++) { 1098 if (toupper(buf[0]) == ends[i]) 1099 break; 1100 } 1101 if (i == strlen(ends)) { 1102 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1103 "invalid numeric suffix '%s'"), buf); 1104 return (-1); 1105 } 1106 1107 /* 1108 * We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't 1109 * allow 'BB' - that's just weird. 1110 */ 1111 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' && 1112 toupper(buf[0]) != 'B')) 1113 return (10*i); 1114 1115 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1116 "invalid numeric suffix '%s'"), buf); 1117 return (-1); 1118} 1119 1120/* 1121 * Convert a string of the form '100G' into a real number. Used when setting 1122 * properties or creating a volume. 'buf' is used to place an extended error 1123 * message for the caller to use. 1124 */ 1125int 1126zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num) 1127{ 1128 char *end; 1129 int shift; 1130 1131 *num = 0; 1132 1133 /* Check to see if this looks like a number. */ 1134 if ((value[0] < '0' || value[0] > '9') && value[0] != '.') { 1135 if (hdl) 1136 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1137 "bad numeric value '%s'"), value); 1138 return (-1); 1139 } 1140 1141 /* Rely on strtoull() to process the numeric portion. */ 1142 errno = 0; 1143 *num = strtoull(value, &end, 10); 1144 1145 /* 1146 * Check for ERANGE, which indicates that the value is too large to fit 1147 * in a 64-bit value. 1148 */ 1149 if (errno == ERANGE) { 1150 if (hdl) 1151 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1152 "numeric value is too large")); 1153 return (-1); 1154 } 1155 1156 /* 1157 * If we have a decimal value, then do the computation with floating 1158 * point arithmetic. Otherwise, use standard arithmetic. 1159 */ 1160 if (*end == '.') { 1161 double fval = strtod(value, &end); 1162 1163 if ((shift = str2shift(hdl, end)) == -1) 1164 return (-1); 1165 1166 fval *= pow(2, shift); 1167 1168 if (fval > UINT64_MAX) { 1169 if (hdl) 1170 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1171 "numeric value is too large")); 1172 return (-1); 1173 } 1174 1175 *num = (uint64_t)fval; 1176 } else { 1177 if ((shift = str2shift(hdl, end)) == -1) 1178 return (-1); 1179 1180 /* Check for overflow */ 1181 if (shift >= 64 || (*num << shift) >> shift != *num) { 1182 if (hdl) 1183 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1184 "numeric value is too large")); 1185 return (-1); 1186 } 1187 1188 *num <<= shift; 1189 } 1190 1191 return (0); 1192} 1193 1194/* 1195 * Given a propname=value nvpair to set, parse any numeric properties 1196 * (index, boolean, etc) if they are specified as strings and add the 1197 * resulting nvpair to the returned nvlist. 1198 * 1199 * At the DSL layer, all properties are either 64-bit numbers or strings. 1200 * We want the user to be able to ignore this fact and specify properties 1201 * as native values (numbers, for example) or as strings (to simplify 1202 * command line utilities). This also handles converting index types 1203 * (compression, checksum, etc) from strings to their on-disk index. 1204 */ 1205int 1206zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop, 1207 zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp, 1208 const char *errbuf) 1209{ 1210 data_type_t datatype = nvpair_type(elem); 1211 zprop_type_t proptype; 1212 const char *propname; 1213 char *value; 1214 boolean_t isnone = B_FALSE; 1215 1216 if (type == ZFS_TYPE_POOL) { 1217 proptype = zpool_prop_get_type(prop); 1218 propname = zpool_prop_to_name(prop); 1219 } else { 1220 proptype = zfs_prop_get_type(prop); 1221 propname = zfs_prop_to_name(prop); 1222 } 1223 1224 /* 1225 * Convert any properties to the internal DSL value types. 1226 */ 1227 *svalp = NULL; 1228 *ivalp = 0; 1229 1230 switch (proptype) { 1231 case PROP_TYPE_STRING: 1232 if (datatype != DATA_TYPE_STRING) { 1233 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1234 "'%s' must be a string"), nvpair_name(elem)); 1235 goto error; 1236 } 1237 (void) nvpair_value_string(elem, svalp); 1238 if (strlen(*svalp) >= ZFS_MAXPROPLEN) { 1239 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1240 "'%s' is too long"), nvpair_name(elem)); 1241 goto error; 1242 } 1243 break; 1244 1245 case PROP_TYPE_NUMBER: 1246 if (datatype == DATA_TYPE_STRING) { 1247 (void) nvpair_value_string(elem, &value); 1248 if (strcmp(value, "none") == 0) { 1249 isnone = B_TRUE; 1250 } else if (zfs_nicestrtonum(hdl, value, ivalp) 1251 != 0) { 1252 goto error; 1253 } 1254 } else if (datatype == DATA_TYPE_UINT64) { 1255 (void) nvpair_value_uint64(elem, ivalp); 1256 } else { 1257 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1258 "'%s' must be a number"), nvpair_name(elem)); 1259 goto error; 1260 } 1261 1262 /* 1263 * Quota special: force 'none' and don't allow 0. 1264 */ 1265 if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone && 1266 (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) { 1267 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1268 "use 'none' to disable quota/refquota")); 1269 goto error; 1270 } 1271 1272 /* 1273 * Special handling for "*_limit=none". In this case it's not 1274 * 0 but UINT64_MAX. 1275 */ 1276 if ((type & ZFS_TYPE_DATASET) && isnone && 1277 (prop == ZFS_PROP_FILESYSTEM_LIMIT || 1278 prop == ZFS_PROP_SNAPSHOT_LIMIT)) { 1279 *ivalp = UINT64_MAX; 1280 } 1281 break; 1282 1283 case PROP_TYPE_INDEX: 1284 if (datatype != DATA_TYPE_STRING) { 1285 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1286 "'%s' must be a string"), nvpair_name(elem)); 1287 goto error; 1288 } 1289 1290 (void) nvpair_value_string(elem, &value); 1291 1292 if (zprop_string_to_index(prop, value, ivalp, type) != 0) { 1293 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1294 "'%s' must be one of '%s'"), propname, 1295 zprop_values(prop, type)); 1296 goto error; 1297 } 1298 break; 1299 1300 default: 1301 abort(); 1302 } 1303 1304 /* 1305 * Add the result to our return set of properties. 1306 */ 1307 if (*svalp != NULL) { 1308 if (nvlist_add_string(ret, propname, *svalp) != 0) { 1309 (void) no_memory(hdl); 1310 return (-1); 1311 } 1312 } else { 1313 if (nvlist_add_uint64(ret, propname, *ivalp) != 0) { 1314 (void) no_memory(hdl); 1315 return (-1); 1316 } 1317 } 1318 1319 return (0); 1320error: 1321 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1322 return (-1); 1323} 1324 1325static int 1326addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp, 1327 zfs_type_t type) 1328{ 1329 int prop; 1330 zprop_list_t *entry; 1331 1332 prop = zprop_name_to_prop(propname, type); 1333 1334 if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type)) 1335 prop = ZPROP_INVAL; 1336 1337 /* 1338 * When no property table entry can be found, return failure if 1339 * this is a pool property or if this isn't a user-defined 1340 * dataset property, 1341 */ 1342 if (prop == ZPROP_INVAL && ((type == ZFS_TYPE_POOL && 1343 !zpool_prop_feature(propname) && 1344 !zpool_prop_unsupported(propname)) || 1345 (type == ZFS_TYPE_DATASET && !zfs_prop_user(propname) && 1346 !zfs_prop_userquota(propname) && !zfs_prop_written(propname)))) { 1347 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1348 "invalid property '%s'"), propname); 1349 return (zfs_error(hdl, EZFS_BADPROP, 1350 dgettext(TEXT_DOMAIN, "bad property list"))); 1351 } 1352 1353 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL) 1354 return (-1); 1355 1356 entry->pl_prop = prop; 1357 if (prop == ZPROP_INVAL) { 1358 if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == 1359 NULL) { 1360 free(entry); 1361 return (-1); 1362 } 1363 entry->pl_width = strlen(propname); 1364 } else { 1365 entry->pl_width = zprop_width(prop, &entry->pl_fixed, 1366 type); 1367 } 1368 1369 *listp = entry; 1370 1371 return (0); 1372} 1373 1374/* 1375 * Given a comma-separated list of properties, construct a property list 1376 * containing both user-defined and native properties. This function will 1377 * return a NULL list if 'all' is specified, which can later be expanded 1378 * by zprop_expand_list(). 1379 */ 1380int 1381zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp, 1382 zfs_type_t type) 1383{ 1384 *listp = NULL; 1385 1386 /* 1387 * If 'all' is specified, return a NULL list. 1388 */ 1389 if (strcmp(props, "all") == 0) 1390 return (0); 1391 1392 /* 1393 * If no props were specified, return an error. 1394 */ 1395 if (props[0] == '\0') { 1396 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1397 "no properties specified")); 1398 return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN, 1399 "bad property list"))); 1400 } 1401 1402 /* 1403 * It would be nice to use getsubopt() here, but the inclusion of column 1404 * aliases makes this more effort than it's worth. 1405 */ 1406 while (*props != '\0') { 1407 size_t len; 1408 char *p; 1409 char c; 1410 1411 if ((p = strchr(props, ',')) == NULL) { 1412 len = strlen(props); 1413 p = props + len; 1414 } else { 1415 len = p - props; 1416 } 1417 1418 /* 1419 * Check for empty options. 1420 */ 1421 if (len == 0) { 1422 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1423 "empty property name")); 1424 return (zfs_error(hdl, EZFS_BADPROP, 1425 dgettext(TEXT_DOMAIN, "bad property list"))); 1426 } 1427 1428 /* 1429 * Check all regular property names. 1430 */ 1431 c = props[len]; 1432 props[len] = '\0'; 1433 1434 if (strcmp(props, "space") == 0) { 1435 static char *spaceprops[] = { 1436 "name", "avail", "used", "usedbysnapshots", 1437 "usedbydataset", "usedbyrefreservation", 1438 "usedbychildren", NULL 1439 }; 1440 int i; 1441 1442 for (i = 0; spaceprops[i]; i++) { 1443 if (addlist(hdl, spaceprops[i], listp, type)) 1444 return (-1); 1445 listp = &(*listp)->pl_next; 1446 } 1447 } else { 1448 if (addlist(hdl, props, listp, type)) 1449 return (-1); 1450 listp = &(*listp)->pl_next; 1451 } 1452 1453 props = p; 1454 if (c == ',') 1455 props++; 1456 } 1457 1458 return (0); 1459} 1460 1461void 1462zprop_free_list(zprop_list_t *pl) 1463{ 1464 zprop_list_t *next; 1465 1466 while (pl != NULL) { 1467 next = pl->pl_next; 1468 free(pl->pl_user_prop); 1469 free(pl); 1470 pl = next; 1471 } 1472} 1473 1474typedef struct expand_data { 1475 zprop_list_t **last; 1476 libzfs_handle_t *hdl; 1477 zfs_type_t type; 1478} expand_data_t; 1479 1480int 1481zprop_expand_list_cb(int prop, void *cb) 1482{ 1483 zprop_list_t *entry; 1484 expand_data_t *edp = cb; 1485 1486 if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL) 1487 return (ZPROP_INVAL); 1488 1489 entry->pl_prop = prop; 1490 entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type); 1491 entry->pl_all = B_TRUE; 1492 1493 *(edp->last) = entry; 1494 edp->last = &entry->pl_next; 1495 1496 return (ZPROP_CONT); 1497} 1498 1499int 1500zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type) 1501{ 1502 zprop_list_t *entry; 1503 zprop_list_t **last; 1504 expand_data_t exp; 1505 1506 if (*plp == NULL) { 1507 /* 1508 * If this is the very first time we've been called for an 'all' 1509 * specification, expand the list to include all native 1510 * properties. 1511 */ 1512 last = plp; 1513 1514 exp.last = last; 1515 exp.hdl = hdl; 1516 exp.type = type; 1517 1518 if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE, 1519 B_FALSE, type) == ZPROP_INVAL) 1520 return (-1); 1521 1522 /* 1523 * Add 'name' to the beginning of the list, which is handled 1524 * specially. 1525 */ 1526 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL) 1527 return (-1); 1528 1529 entry->pl_prop = (type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : 1530 ZFS_PROP_NAME; 1531 entry->pl_width = zprop_width(entry->pl_prop, 1532 &entry->pl_fixed, type); 1533 entry->pl_all = B_TRUE; 1534 entry->pl_next = *plp; 1535 *plp = entry; 1536 } 1537 return (0); 1538} 1539 1540int 1541zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered, 1542 zfs_type_t type) 1543{ 1544 return (zprop_iter_common(func, cb, show_all, ordered, type)); 1545} 1546