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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 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. | |
23 | * Use is subject to license terms. | |
24 | */ | |
25 | ||
26 | #pragma ident "@(#)libzfs_util.c 1.29 08/04/01 SMI" | |
27 | ||
28 | /* | |
29 | * Internal utility routines for the ZFS library. | |
30 | */ | |
31 | ||
32 | #include <errno.h> | |
33 | #include <fcntl.h> | |
34 | #include <libintl.h> | |
35 | #include <stdarg.h> | |
36 | #include <stdio.h> | |
37 | #include <stdlib.h> | |
38 | #include <strings.h> | |
39 | #include <unistd.h> | |
40 | #include <ctype.h> | |
41 | #include <math.h> | |
42 | #include <sys/mnttab.h> | |
43 | #include <sys/mntent.h> | |
44 | #include <sys/types.h> | |
45 | ||
46 | #include <libzfs.h> | |
47 | ||
48 | #include "libzfs_impl.h" | |
49 | #include "zfs_prop.h" | |
50 | ||
51 | int | |
52 | libzfs_errno(libzfs_handle_t *hdl) | |
53 | { | |
54 | return (hdl->libzfs_error); | |
55 | } | |
56 | ||
57 | const char * | |
58 | libzfs_error_action(libzfs_handle_t *hdl) | |
59 | { | |
60 | return (hdl->libzfs_action); | |
61 | } | |
62 | ||
63 | const char * | |
64 | libzfs_error_description(libzfs_handle_t *hdl) | |
65 | { | |
66 | if (hdl->libzfs_desc[0] != '\0') | |
67 | return (hdl->libzfs_desc); | |
68 | ||
69 | switch (hdl->libzfs_error) { | |
70 | case EZFS_NOMEM: | |
71 | return (dgettext(TEXT_DOMAIN, "out of memory")); | |
72 | case EZFS_BADPROP: | |
73 | return (dgettext(TEXT_DOMAIN, "invalid property value")); | |
74 | case EZFS_PROPREADONLY: | |
75 | return (dgettext(TEXT_DOMAIN, "read only property")); | |
76 | case EZFS_PROPTYPE: | |
77 | return (dgettext(TEXT_DOMAIN, "property doesn't apply to " | |
78 | "datasets of this type")); | |
79 | case EZFS_PROPNONINHERIT: | |
80 | return (dgettext(TEXT_DOMAIN, "property cannot be inherited")); | |
81 | case EZFS_PROPSPACE: | |
82 | return (dgettext(TEXT_DOMAIN, "invalid quota or reservation")); | |
83 | case EZFS_BADTYPE: | |
84 | return (dgettext(TEXT_DOMAIN, "operation not applicable to " | |
85 | "datasets of this type")); | |
86 | case EZFS_BUSY: | |
87 | return (dgettext(TEXT_DOMAIN, "pool or dataset is busy")); | |
88 | case EZFS_EXISTS: | |
89 | return (dgettext(TEXT_DOMAIN, "pool or dataset exists")); | |
90 | case EZFS_NOENT: | |
91 | return (dgettext(TEXT_DOMAIN, "no such pool or dataset")); | |
92 | case EZFS_BADSTREAM: | |
93 | return (dgettext(TEXT_DOMAIN, "invalid backup stream")); | |
94 | case EZFS_DSREADONLY: | |
95 | return (dgettext(TEXT_DOMAIN, "dataset is read only")); | |
96 | case EZFS_VOLTOOBIG: | |
97 | return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for " | |
98 | "this system")); | |
99 | case EZFS_VOLHASDATA: | |
100 | return (dgettext(TEXT_DOMAIN, "volume has data")); | |
101 | case EZFS_INVALIDNAME: | |
102 | return (dgettext(TEXT_DOMAIN, "invalid name")); | |
103 | case EZFS_BADRESTORE: | |
104 | return (dgettext(TEXT_DOMAIN, "unable to restore to " | |
105 | "destination")); | |
106 | case EZFS_BADBACKUP: | |
107 | return (dgettext(TEXT_DOMAIN, "backup failed")); | |
108 | case EZFS_BADTARGET: | |
109 | return (dgettext(TEXT_DOMAIN, "invalid target vdev")); | |
110 | case EZFS_NODEVICE: | |
111 | return (dgettext(TEXT_DOMAIN, "no such device in pool")); | |
112 | case EZFS_BADDEV: | |
113 | return (dgettext(TEXT_DOMAIN, "invalid device")); | |
114 | case EZFS_NOREPLICAS: | |
115 | return (dgettext(TEXT_DOMAIN, "no valid replicas")); | |
116 | case EZFS_RESILVERING: | |
117 | return (dgettext(TEXT_DOMAIN, "currently resilvering")); | |
118 | case EZFS_BADVERSION: | |
119 | return (dgettext(TEXT_DOMAIN, "unsupported version")); | |
120 | case EZFS_POOLUNAVAIL: | |
121 | return (dgettext(TEXT_DOMAIN, "pool is unavailable")); | |
122 | case EZFS_DEVOVERFLOW: | |
123 | return (dgettext(TEXT_DOMAIN, "too many devices in one vdev")); | |
124 | case EZFS_BADPATH: | |
125 | return (dgettext(TEXT_DOMAIN, "must be an absolute path")); | |
126 | case EZFS_CROSSTARGET: | |
127 | return (dgettext(TEXT_DOMAIN, "operation crosses datasets or " | |
128 | "pools")); | |
129 | case EZFS_ZONED: | |
130 | return (dgettext(TEXT_DOMAIN, "dataset in use by local zone")); | |
131 | case EZFS_MOUNTFAILED: | |
132 | return (dgettext(TEXT_DOMAIN, "mount failed")); | |
133 | case EZFS_UMOUNTFAILED: | |
134 | return (dgettext(TEXT_DOMAIN, "umount failed")); | |
135 | case EZFS_UNSHARENFSFAILED: | |
136 | return (dgettext(TEXT_DOMAIN, "unshare(1M) failed")); | |
137 | case EZFS_SHARENFSFAILED: | |
138 | return (dgettext(TEXT_DOMAIN, "share(1M) failed")); | |
139 | case EZFS_UNSHARESMBFAILED: | |
140 | return (dgettext(TEXT_DOMAIN, "smb remove share failed")); | |
141 | case EZFS_SHARESMBFAILED: | |
142 | return (dgettext(TEXT_DOMAIN, "smb add share failed")); | |
143 | case EZFS_ISCSISVCUNAVAIL: | |
144 | return (dgettext(TEXT_DOMAIN, | |
145 | "iscsitgt service need to be enabled by " | |
146 | "a privileged user")); | |
147 | case EZFS_DEVLINKS: | |
148 | return (dgettext(TEXT_DOMAIN, "failed to create /dev links")); | |
149 | case EZFS_PERM: | |
150 | return (dgettext(TEXT_DOMAIN, "permission denied")); | |
151 | case EZFS_NOSPC: | |
152 | return (dgettext(TEXT_DOMAIN, "out of space")); | |
153 | case EZFS_IO: | |
154 | return (dgettext(TEXT_DOMAIN, "I/O error")); | |
155 | case EZFS_INTR: | |
156 | return (dgettext(TEXT_DOMAIN, "signal received")); | |
157 | case EZFS_ISSPARE: | |
158 | return (dgettext(TEXT_DOMAIN, "device is reserved as a hot " | |
159 | "spare")); | |
160 | case EZFS_INVALCONFIG: | |
161 | return (dgettext(TEXT_DOMAIN, "invalid vdev configuration")); | |
162 | case EZFS_RECURSIVE: | |
163 | return (dgettext(TEXT_DOMAIN, "recursive dataset dependency")); | |
164 | case EZFS_NOHISTORY: | |
165 | return (dgettext(TEXT_DOMAIN, "no history available")); | |
166 | case EZFS_UNSHAREISCSIFAILED: | |
167 | return (dgettext(TEXT_DOMAIN, | |
168 | "iscsitgtd failed request to unshare")); | |
169 | case EZFS_SHAREISCSIFAILED: | |
170 | return (dgettext(TEXT_DOMAIN, | |
171 | "iscsitgtd failed request to share")); | |
172 | case EZFS_POOLPROPS: | |
173 | return (dgettext(TEXT_DOMAIN, "failed to retrieve " | |
174 | "pool properties")); | |
175 | case EZFS_POOL_NOTSUP: | |
176 | return (dgettext(TEXT_DOMAIN, "operation not supported " | |
177 | "on this type of pool")); | |
178 | case EZFS_POOL_INVALARG: | |
179 | return (dgettext(TEXT_DOMAIN, "invalid argument for " | |
180 | "this pool operation")); | |
181 | case EZFS_NAMETOOLONG: | |
182 | return (dgettext(TEXT_DOMAIN, "dataset name is too long")); | |
183 | case EZFS_OPENFAILED: | |
184 | return (dgettext(TEXT_DOMAIN, "open failed")); | |
185 | case EZFS_NOCAP: | |
186 | return (dgettext(TEXT_DOMAIN, | |
187 | "disk capacity information could not be retrieved")); | |
188 | case EZFS_LABELFAILED: | |
189 | return (dgettext(TEXT_DOMAIN, "write of label failed")); | |
190 | case EZFS_BADWHO: | |
191 | return (dgettext(TEXT_DOMAIN, "invalid user/group")); | |
192 | case EZFS_BADPERM: | |
193 | return (dgettext(TEXT_DOMAIN, "invalid permission")); | |
194 | case EZFS_BADPERMSET: | |
195 | return (dgettext(TEXT_DOMAIN, "invalid permission set name")); | |
196 | case EZFS_NODELEGATION: | |
197 | return (dgettext(TEXT_DOMAIN, "delegated administration is " | |
198 | "disabled on pool")); | |
199 | case EZFS_PERMRDONLY: | |
200 | return (dgettext(TEXT_DOMAIN, "snapshot permissions cannot be" | |
201 | " modified")); | |
202 | case EZFS_BADCACHE: | |
203 | return (dgettext(TEXT_DOMAIN, "invalid or missing cache file")); | |
204 | case EZFS_ISL2CACHE: | |
205 | return (dgettext(TEXT_DOMAIN, "device is in use as a cache")); | |
206 | case EZFS_VDEVNOTSUP: | |
207 | return (dgettext(TEXT_DOMAIN, "vdev specification is not " | |
208 | "supported")); | |
209 | case EZFS_UNKNOWN: | |
210 | return (dgettext(TEXT_DOMAIN, "unknown error")); | |
211 | default: | |
212 | assert(hdl->libzfs_error == 0); | |
213 | return (dgettext(TEXT_DOMAIN, "no error")); | |
214 | } | |
215 | } | |
216 | ||
217 | /*PRINTFLIKE2*/ | |
218 | void | |
219 | zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...) | |
220 | { | |
221 | va_list ap; | |
222 | ||
223 | va_start(ap, fmt); | |
224 | ||
225 | (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc), | |
226 | fmt, ap); | |
227 | hdl->libzfs_desc_active = 1; | |
228 | ||
229 | va_end(ap); | |
230 | } | |
231 | ||
232 | static void | |
233 | zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap) | |
234 | { | |
235 | (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action), | |
236 | fmt, ap); | |
237 | hdl->libzfs_error = error; | |
238 | ||
239 | if (hdl->libzfs_desc_active) | |
240 | hdl->libzfs_desc_active = 0; | |
241 | else | |
242 | hdl->libzfs_desc[0] = '\0'; | |
243 | ||
244 | if (hdl->libzfs_printerr) { | |
245 | if (error == EZFS_UNKNOWN) { | |
246 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal " | |
247 | "error: %s\n"), libzfs_error_description(hdl)); | |
248 | abort(); | |
249 | } | |
250 | ||
251 | (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action, | |
252 | libzfs_error_description(hdl)); | |
253 | if (error == EZFS_NOMEM) | |
254 | exit(1); | |
255 | } | |
256 | } | |
257 | ||
258 | int | |
259 | zfs_error(libzfs_handle_t *hdl, int error, const char *msg) | |
260 | { | |
261 | return (zfs_error_fmt(hdl, error, "%s", msg)); | |
262 | } | |
263 | ||
264 | /*PRINTFLIKE3*/ | |
265 | int | |
266 | zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) | |
267 | { | |
268 | va_list ap; | |
269 | ||
270 | va_start(ap, fmt); | |
271 | ||
272 | zfs_verror(hdl, error, fmt, ap); | |
273 | ||
274 | va_end(ap); | |
275 | ||
276 | return (-1); | |
277 | } | |
278 | ||
279 | static int | |
280 | zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt, | |
281 | va_list ap) | |
282 | { | |
283 | switch (error) { | |
284 | case EPERM: | |
285 | case EACCES: | |
286 | zfs_verror(hdl, EZFS_PERM, fmt, ap); | |
287 | return (-1); | |
288 | ||
289 | case ECANCELED: | |
290 | zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap); | |
291 | return (-1); | |
292 | ||
293 | case EIO: | |
294 | zfs_verror(hdl, EZFS_IO, fmt, ap); | |
295 | return (-1); | |
296 | ||
297 | case EINTR: | |
298 | zfs_verror(hdl, EZFS_INTR, fmt, ap); | |
299 | return (-1); | |
300 | } | |
301 | ||
302 | return (0); | |
303 | } | |
304 | ||
305 | int | |
306 | zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg) | |
307 | { | |
308 | return (zfs_standard_error_fmt(hdl, error, "%s", msg)); | |
309 | } | |
310 | ||
311 | /*PRINTFLIKE3*/ | |
312 | int | |
313 | zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) | |
314 | { | |
315 | va_list ap; | |
316 | ||
317 | va_start(ap, fmt); | |
318 | ||
319 | if (zfs_common_error(hdl, error, fmt, ap) != 0) { | |
320 | va_end(ap); | |
321 | return (-1); | |
322 | } | |
323 | ||
324 | switch (error) { | |
325 | case ENXIO: | |
326 | case ENODEV: | |
327 | zfs_verror(hdl, EZFS_IO, fmt, ap); | |
328 | break; | |
329 | ||
330 | case ENOENT: | |
331 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
332 | "dataset does not exist")); | |
333 | zfs_verror(hdl, EZFS_NOENT, fmt, ap); | |
334 | break; | |
335 | ||
336 | case ENOSPC: | |
337 | case EDQUOT: | |
338 | zfs_verror(hdl, EZFS_NOSPC, fmt, ap); | |
339 | return (-1); | |
340 | ||
341 | case EEXIST: | |
342 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
343 | "dataset already exists")); | |
344 | zfs_verror(hdl, EZFS_EXISTS, fmt, ap); | |
345 | break; | |
346 | ||
347 | case EBUSY: | |
348 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
349 | "dataset is busy")); | |
350 | zfs_verror(hdl, EZFS_BUSY, fmt, ap); | |
351 | break; | |
352 | case EROFS: | |
353 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
354 | "snapshot permissions cannot be modified")); | |
355 | zfs_verror(hdl, EZFS_PERMRDONLY, fmt, ap); | |
356 | break; | |
357 | case ENAMETOOLONG: | |
358 | zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap); | |
359 | break; | |
360 | case ENOTSUP: | |
361 | zfs_verror(hdl, EZFS_BADVERSION, fmt, ap); | |
362 | break; | |
363 | default: | |
364 | zfs_error_aux(hdl, strerror(errno)); | |
365 | zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); | |
366 | break; | |
367 | } | |
368 | ||
369 | va_end(ap); | |
370 | return (-1); | |
371 | } | |
372 | ||
373 | int | |
374 | zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg) | |
375 | { | |
376 | return (zpool_standard_error_fmt(hdl, error, "%s", msg)); | |
377 | } | |
378 | ||
379 | /*PRINTFLIKE3*/ | |
380 | int | |
381 | zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) | |
382 | { | |
383 | va_list ap; | |
384 | ||
385 | va_start(ap, fmt); | |
386 | ||
387 | if (zfs_common_error(hdl, error, fmt, ap) != 0) { | |
388 | va_end(ap); | |
389 | return (-1); | |
390 | } | |
391 | ||
392 | switch (error) { | |
393 | case ENODEV: | |
394 | zfs_verror(hdl, EZFS_NODEVICE, fmt, ap); | |
395 | break; | |
396 | ||
397 | case ENOENT: | |
398 | zfs_error_aux(hdl, | |
399 | dgettext(TEXT_DOMAIN, "no such pool or dataset")); | |
400 | zfs_verror(hdl, EZFS_NOENT, fmt, ap); | |
401 | break; | |
402 | ||
403 | case EEXIST: | |
404 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
405 | "pool already exists")); | |
406 | zfs_verror(hdl, EZFS_EXISTS, fmt, ap); | |
407 | break; | |
408 | ||
409 | case EBUSY: | |
410 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy")); | |
411 | zfs_verror(hdl, EZFS_EXISTS, fmt, ap); | |
412 | break; | |
413 | ||
414 | case ENXIO: | |
415 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
416 | "one or more devices is currently unavailable")); | |
417 | zfs_verror(hdl, EZFS_BADDEV, fmt, ap); | |
418 | break; | |
419 | ||
420 | case ENAMETOOLONG: | |
421 | zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap); | |
422 | break; | |
423 | ||
424 | case ENOTSUP: | |
425 | zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap); | |
426 | break; | |
427 | ||
428 | case EINVAL: | |
429 | zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap); | |
430 | break; | |
431 | ||
432 | case ENOSPC: | |
433 | case EDQUOT: | |
434 | zfs_verror(hdl, EZFS_NOSPC, fmt, ap); | |
435 | return (-1); | |
436 | ||
437 | default: | |
438 | zfs_error_aux(hdl, strerror(error)); | |
439 | zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); | |
440 | } | |
441 | ||
442 | va_end(ap); | |
443 | return (-1); | |
444 | } | |
445 | ||
446 | /* | |
447 | * Display an out of memory error message and abort the current program. | |
448 | */ | |
449 | int | |
450 | no_memory(libzfs_handle_t *hdl) | |
451 | { | |
452 | return (zfs_error(hdl, EZFS_NOMEM, "internal error")); | |
453 | } | |
454 | ||
455 | /* | |
456 | * A safe form of malloc() which will die if the allocation fails. | |
457 | */ | |
458 | void * | |
459 | zfs_alloc(libzfs_handle_t *hdl, size_t size) | |
460 | { | |
461 | void *data; | |
462 | ||
463 | if ((data = calloc(1, size)) == NULL) | |
464 | (void) no_memory(hdl); | |
465 | ||
466 | return (data); | |
467 | } | |
468 | ||
469 | /* | |
470 | * A safe form of realloc(), which also zeroes newly allocated space. | |
471 | */ | |
472 | void * | |
473 | zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize) | |
474 | { | |
475 | void *ret; | |
476 | ||
477 | if ((ret = realloc(ptr, newsize)) == NULL) { | |
478 | (void) no_memory(hdl); | |
479 | free(ptr); | |
480 | return (NULL); | |
481 | } | |
482 | ||
483 | bzero((char *)ret + oldsize, (newsize - oldsize)); | |
484 | return (ret); | |
485 | } | |
486 | ||
487 | /* | |
488 | * A safe form of strdup() which will die if the allocation fails. | |
489 | */ | |
490 | char * | |
491 | zfs_strdup(libzfs_handle_t *hdl, const char *str) | |
492 | { | |
493 | char *ret; | |
494 | ||
495 | if ((ret = strdup(str)) == NULL) | |
496 | (void) no_memory(hdl); | |
497 | ||
498 | return (ret); | |
499 | } | |
500 | ||
501 | /* | |
502 | * Convert a number to an appropriately human-readable output. | |
503 | */ | |
504 | void | |
505 | zfs_nicenum(uint64_t num, char *buf, size_t buflen) | |
506 | { | |
507 | uint64_t n = num; | |
508 | int index = 0; | |
509 | char u; | |
510 | ||
511 | while (n >= 1024) { | |
512 | n /= 1024; | |
513 | index++; | |
514 | } | |
515 | ||
516 | u = " KMGTPE"[index]; | |
517 | ||
518 | if (index == 0) { | |
519 | (void) snprintf(buf, buflen, "%llu", n); | |
520 | } else if ((num & ((1ULL << 10 * index) - 1)) == 0) { | |
521 | /* | |
522 | * If this is an even multiple of the base, always display | |
523 | * without any decimal precision. | |
524 | */ | |
525 | (void) snprintf(buf, buflen, "%llu%c", n, u); | |
526 | } else { | |
527 | /* | |
528 | * We want to choose a precision that reflects the best choice | |
529 | * for fitting in 5 characters. This can get rather tricky when | |
530 | * we have numbers that are very close to an order of magnitude. | |
531 | * For example, when displaying 10239 (which is really 9.999K), | |
532 | * we want only a single place of precision for 10.0K. We could | |
533 | * develop some complex heuristics for this, but it's much | |
534 | * easier just to try each combination in turn. | |
535 | */ | |
536 | int i; | |
537 | for (i = 2; i >= 0; i--) { | |
538 | if (snprintf(buf, buflen, "%.*f%c", i, | |
539 | (double)num / (1ULL << 10 * index), u) <= 5) | |
540 | break; | |
541 | } | |
542 | } | |
543 | } | |
544 | ||
545 | void | |
546 | libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr) | |
547 | { | |
548 | hdl->libzfs_printerr = printerr; | |
549 | } | |
550 | ||
551 | libzfs_handle_t * | |
552 | libzfs_init(void) | |
553 | { | |
554 | libzfs_handle_t *hdl; | |
555 | ||
556 | if ((hdl = calloc(sizeof (libzfs_handle_t), 1)) == NULL) { | |
557 | return (NULL); | |
558 | } | |
559 | ||
560 | if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) { | |
561 | free(hdl); | |
562 | return (NULL); | |
563 | } | |
564 | ||
565 | if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) { | |
566 | (void) close(hdl->libzfs_fd); | |
567 | free(hdl); | |
568 | return (NULL); | |
569 | } | |
570 | ||
571 | hdl->libzfs_sharetab = fopen("/etc/dfs/sharetab", "r"); | |
572 | ||
573 | zfs_prop_init(); | |
574 | zpool_prop_init(); | |
575 | ||
576 | return (hdl); | |
577 | } | |
578 | ||
579 | void | |
580 | libzfs_fini(libzfs_handle_t *hdl) | |
581 | { | |
582 | (void) close(hdl->libzfs_fd); | |
583 | if (hdl->libzfs_mnttab) | |
584 | (void) fclose(hdl->libzfs_mnttab); | |
585 | if (hdl->libzfs_sharetab) | |
586 | (void) fclose(hdl->libzfs_sharetab); | |
587 | zfs_uninit_libshare(hdl); | |
588 | if (hdl->libzfs_log_str) | |
589 | (void) free(hdl->libzfs_log_str); | |
590 | namespace_clear(hdl); | |
591 | free(hdl); | |
592 | } | |
593 | ||
594 | libzfs_handle_t * | |
595 | zpool_get_handle(zpool_handle_t *zhp) | |
596 | { | |
597 | return (zhp->zpool_hdl); | |
598 | } | |
599 | ||
600 | libzfs_handle_t * | |
601 | zfs_get_handle(zfs_handle_t *zhp) | |
602 | { | |
603 | return (zhp->zfs_hdl); | |
604 | } | |
605 | ||
606 | /* | |
607 | * Given a name, determine whether or not it's a valid path | |
608 | * (starts with '/' or "./"). If so, walk the mnttab trying | |
609 | * to match the device number. If not, treat the path as an | |
610 | * fs/vol/snap name. | |
611 | */ | |
612 | zfs_handle_t * | |
613 | zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype) | |
614 | { | |
615 | struct stat64 statbuf; | |
616 | struct extmnttab entry; | |
617 | int ret; | |
618 | ||
619 | if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) { | |
620 | /* | |
621 | * It's not a valid path, assume it's a name of type 'argtype'. | |
622 | */ | |
623 | return (zfs_open(hdl, path, argtype)); | |
624 | } | |
625 | ||
626 | if (stat64(path, &statbuf) != 0) { | |
627 | (void) fprintf(stderr, "%s: %s\n", path, strerror(errno)); | |
628 | return (NULL); | |
629 | } | |
630 | ||
631 | rewind(hdl->libzfs_mnttab); | |
632 | while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) { | |
633 | if (makedevice(entry.mnt_major, entry.mnt_minor) == | |
634 | statbuf.st_dev) { | |
635 | break; | |
636 | } | |
637 | } | |
638 | if (ret != 0) { | |
639 | return (NULL); | |
640 | } | |
641 | ||
642 | if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { | |
643 | (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"), | |
644 | path); | |
645 | return (NULL); | |
646 | } | |
647 | ||
648 | return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM)); | |
649 | } | |
650 | ||
651 | /* | |
652 | * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from | |
653 | * an ioctl(). | |
654 | */ | |
655 | int | |
656 | zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len) | |
657 | { | |
658 | if (len == 0) | |
659 | len = 2048; | |
660 | zc->zc_nvlist_dst_size = len; | |
661 | if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t) | |
662 | zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == NULL) | |
663 | return (-1); | |
664 | ||
665 | return (0); | |
666 | } | |
667 | ||
668 | /* | |
669 | * Called when an ioctl() which returns an nvlist fails with ENOMEM. This will | |
670 | * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was | |
671 | * filled in by the kernel to indicate the actual required size. | |
672 | */ | |
673 | int | |
674 | zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc) | |
675 | { | |
676 | free((void *)(uintptr_t)zc->zc_nvlist_dst); | |
677 | if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t) | |
678 | zfs_alloc(hdl, zc->zc_nvlist_dst_size)) | |
679 | == NULL) | |
680 | return (-1); | |
681 | ||
682 | return (0); | |
683 | } | |
684 | ||
685 | /* | |
686 | * Called to free the src and dst nvlists stored in the command structure. | |
687 | */ | |
688 | void | |
689 | zcmd_free_nvlists(zfs_cmd_t *zc) | |
690 | { | |
691 | free((void *)(uintptr_t)zc->zc_nvlist_conf); | |
692 | free((void *)(uintptr_t)zc->zc_nvlist_src); | |
693 | free((void *)(uintptr_t)zc->zc_nvlist_dst); | |
694 | } | |
695 | ||
696 | static int | |
697 | zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen, | |
698 | nvlist_t *nvl) | |
699 | { | |
700 | char *packed; | |
701 | size_t len; | |
702 | ||
703 | verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0); | |
704 | ||
705 | if ((packed = zfs_alloc(hdl, len)) == NULL) | |
706 | return (-1); | |
707 | ||
708 | verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0); | |
709 | ||
710 | *outnv = (uint64_t)(uintptr_t)packed; | |
711 | *outlen = len; | |
712 | ||
713 | return (0); | |
714 | } | |
715 | ||
716 | int | |
717 | zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) | |
718 | { | |
719 | return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf, | |
720 | &zc->zc_nvlist_conf_size, nvl)); | |
721 | } | |
722 | ||
723 | int | |
724 | zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) | |
725 | { | |
726 | return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src, | |
727 | &zc->zc_nvlist_src_size, nvl)); | |
728 | } | |
729 | ||
730 | /* | |
731 | * Unpacks an nvlist from the ZFS ioctl command structure. | |
732 | */ | |
733 | int | |
734 | zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp) | |
735 | { | |
736 | if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst, | |
737 | zc->zc_nvlist_dst_size, nvlp, 0) != 0) | |
738 | return (no_memory(hdl)); | |
739 | ||
740 | return (0); | |
741 | } | |
742 | ||
743 | int | |
744 | zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc) | |
745 | { | |
746 | int error; | |
747 | ||
748 | zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str; | |
749 | error = ioctl(hdl->libzfs_fd, request, zc); | |
750 | if (hdl->libzfs_log_str) { | |
751 | free(hdl->libzfs_log_str); | |
752 | hdl->libzfs_log_str = NULL; | |
753 | } | |
754 | zc->zc_history = 0; | |
755 | ||
756 | return (error); | |
757 | } | |
758 | ||
759 | /* | |
760 | * ================================================================ | |
761 | * API shared by zfs and zpool property management | |
762 | * ================================================================ | |
763 | */ | |
764 | ||
765 | static void | |
766 | zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type) | |
767 | { | |
768 | zprop_list_t *pl = cbp->cb_proplist; | |
769 | int i; | |
770 | char *title; | |
771 | size_t len; | |
772 | ||
773 | cbp->cb_first = B_FALSE; | |
774 | if (cbp->cb_scripted) | |
775 | return; | |
776 | ||
777 | /* | |
778 | * Start with the length of the column headers. | |
779 | */ | |
780 | cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME")); | |
781 | cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN, | |
782 | "PROPERTY")); | |
783 | cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN, | |
784 | "VALUE")); | |
785 | cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN, | |
786 | "SOURCE")); | |
787 | ||
788 | /* | |
789 | * Go through and calculate the widths for each column. For the | |
790 | * 'source' column, we kludge it up by taking the worst-case scenario of | |
791 | * inheriting from the longest name. This is acceptable because in the | |
792 | * majority of cases 'SOURCE' is the last column displayed, and we don't | |
793 | * use the width anyway. Note that the 'VALUE' column can be oversized, | |
794 | * if the name of the property is much longer the any values we find. | |
795 | */ | |
796 | for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) { | |
797 | /* | |
798 | * 'PROPERTY' column | |
799 | */ | |
800 | if (pl->pl_prop != ZPROP_INVAL) { | |
801 | const char *propname = (type == ZFS_TYPE_POOL) ? | |
802 | zpool_prop_to_name(pl->pl_prop) : | |
803 | zfs_prop_to_name(pl->pl_prop); | |
804 | ||
805 | len = strlen(propname); | |
806 | if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) | |
807 | cbp->cb_colwidths[GET_COL_PROPERTY] = len; | |
808 | } else { | |
809 | len = strlen(pl->pl_user_prop); | |
810 | if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) | |
811 | cbp->cb_colwidths[GET_COL_PROPERTY] = len; | |
812 | } | |
813 | ||
814 | /* | |
815 | * 'VALUE' column | |
816 | */ | |
817 | if ((pl->pl_prop != ZFS_PROP_NAME || !pl->pl_all) && | |
818 | pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE]) | |
819 | cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width; | |
820 | ||
821 | /* | |
822 | * 'NAME' and 'SOURCE' columns | |
823 | */ | |
824 | if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME : | |
825 | ZFS_PROP_NAME) && | |
826 | pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) { | |
827 | cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width; | |
828 | cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width + | |
829 | strlen(dgettext(TEXT_DOMAIN, "inherited from")); | |
830 | } | |
831 | } | |
832 | ||
833 | /* | |
834 | * Now go through and print the headers. | |
835 | */ | |
836 | for (i = 0; i < 4; i++) { | |
837 | switch (cbp->cb_columns[i]) { | |
838 | case GET_COL_NAME: | |
839 | title = dgettext(TEXT_DOMAIN, "NAME"); | |
840 | break; | |
841 | case GET_COL_PROPERTY: | |
842 | title = dgettext(TEXT_DOMAIN, "PROPERTY"); | |
843 | break; | |
844 | case GET_COL_VALUE: | |
845 | title = dgettext(TEXT_DOMAIN, "VALUE"); | |
846 | break; | |
847 | case GET_COL_SOURCE: | |
848 | title = dgettext(TEXT_DOMAIN, "SOURCE"); | |
849 | break; | |
850 | default: | |
851 | title = NULL; | |
852 | } | |
853 | ||
854 | if (title != NULL) { | |
855 | if (i == 3 || cbp->cb_columns[i + 1] == 0) | |
856 | (void) printf("%s", title); | |
857 | else | |
858 | (void) printf("%-*s ", | |
859 | cbp->cb_colwidths[cbp->cb_columns[i]], | |
860 | title); | |
861 | } | |
862 | } | |
863 | (void) printf("\n"); | |
864 | } | |
865 | ||
866 | /* | |
867 | * Display a single line of output, according to the settings in the callback | |
868 | * structure. | |
869 | */ | |
870 | void | |
871 | zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp, | |
872 | const char *propname, const char *value, zprop_source_t sourcetype, | |
873 | const char *source) | |
874 | { | |
875 | int i; | |
876 | const char *str; | |
877 | char buf[128]; | |
878 | ||
879 | /* | |
880 | * Ignore those source types that the user has chosen to ignore. | |
881 | */ | |
882 | if ((sourcetype & cbp->cb_sources) == 0) | |
883 | return; | |
884 | ||
885 | if (cbp->cb_first) | |
886 | zprop_print_headers(cbp, cbp->cb_type); | |
887 | ||
888 | for (i = 0; i < 4; i++) { | |
889 | switch (cbp->cb_columns[i]) { | |
890 | case GET_COL_NAME: | |
891 | str = name; | |
892 | break; | |
893 | ||
894 | case GET_COL_PROPERTY: | |
895 | str = propname; | |
896 | break; | |
897 | ||
898 | case GET_COL_VALUE: | |
899 | str = value; | |
900 | break; | |
901 | ||
902 | case GET_COL_SOURCE: | |
903 | switch (sourcetype) { | |
904 | case ZPROP_SRC_NONE: | |
905 | str = "-"; | |
906 | break; | |
907 | ||
908 | case ZPROP_SRC_DEFAULT: | |
909 | str = "default"; | |
910 | break; | |
911 | ||
912 | case ZPROP_SRC_LOCAL: | |
913 | str = "local"; | |
914 | break; | |
915 | ||
916 | case ZPROP_SRC_TEMPORARY: | |
917 | str = "temporary"; | |
918 | break; | |
919 | ||
920 | case ZPROP_SRC_INHERITED: | |
921 | (void) snprintf(buf, sizeof (buf), | |
922 | "inherited from %s", source); | |
923 | str = buf; | |
924 | break; | |
925 | } | |
926 | break; | |
927 | ||
928 | default: | |
929 | continue; | |
930 | } | |
931 | ||
932 | if (cbp->cb_columns[i + 1] == 0) | |
933 | (void) printf("%s", str); | |
934 | else if (cbp->cb_scripted) | |
935 | (void) printf("%s\t", str); | |
936 | else | |
937 | (void) printf("%-*s ", | |
938 | cbp->cb_colwidths[cbp->cb_columns[i]], | |
939 | str); | |
940 | ||
941 | } | |
942 | ||
943 | (void) printf("\n"); | |
944 | } | |
945 | ||
946 | /* | |
947 | * Given a numeric suffix, convert the value into a number of bits that the | |
948 | * resulting value must be shifted. | |
949 | */ | |
950 | static int | |
951 | str2shift(libzfs_handle_t *hdl, const char *buf) | |
952 | { | |
953 | const char *ends = "BKMGTPEZ"; | |
954 | int i; | |
955 | ||
956 | if (buf[0] == '\0') | |
957 | return (0); | |
958 | for (i = 0; i < strlen(ends); i++) { | |
959 | if (toupper(buf[0]) == ends[i]) | |
960 | break; | |
961 | } | |
962 | if (i == strlen(ends)) { | |
963 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
964 | "invalid numeric suffix '%s'"), buf); | |
965 | return (-1); | |
966 | } | |
967 | ||
968 | /* | |
969 | * We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't | |
970 | * allow 'BB' - that's just weird. | |
971 | */ | |
972 | if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' && | |
973 | toupper(buf[0]) != 'B')) | |
974 | return (10*i); | |
975 | ||
976 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
977 | "invalid numeric suffix '%s'"), buf); | |
978 | return (-1); | |
979 | } | |
980 | ||
981 | /* | |
982 | * Convert a string of the form '100G' into a real number. Used when setting | |
983 | * properties or creating a volume. 'buf' is used to place an extended error | |
984 | * message for the caller to use. | |
985 | */ | |
986 | int | |
987 | zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num) | |
988 | { | |
989 | char *end; | |
990 | int shift; | |
991 | ||
992 | *num = 0; | |
993 | ||
994 | /* Check to see if this looks like a number. */ | |
995 | if ((value[0] < '0' || value[0] > '9') && value[0] != '.') { | |
996 | if (hdl) | |
997 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
998 | "bad numeric value '%s'"), value); | |
999 | return (-1); | |
1000 | } | |
1001 | ||
1002 | /* Rely on stroll() to process the numeric portion. */ | |
1003 | errno = 0; | |
1004 | *num = strtoll(value, &end, 10); | |
1005 | ||
1006 | /* | |
1007 | * Check for ERANGE, which indicates that the value is too large to fit | |
1008 | * in a 64-bit value. | |
1009 | */ | |
1010 | if (errno == ERANGE) { | |
1011 | if (hdl) | |
1012 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1013 | "numeric value is too large")); | |
1014 | return (-1); | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * If we have a decimal value, then do the computation with floating | |
1019 | * point arithmetic. Otherwise, use standard arithmetic. | |
1020 | */ | |
1021 | if (*end == '.') { | |
1022 | double fval = strtod(value, &end); | |
1023 | ||
1024 | if ((shift = str2shift(hdl, end)) == -1) | |
1025 | return (-1); | |
1026 | ||
1027 | fval *= pow(2, shift); | |
1028 | ||
1029 | if (fval > UINT64_MAX) { | |
1030 | if (hdl) | |
1031 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1032 | "numeric value is too large")); | |
1033 | return (-1); | |
1034 | } | |
1035 | ||
1036 | *num = (uint64_t)fval; | |
1037 | } else { | |
1038 | if ((shift = str2shift(hdl, end)) == -1) | |
1039 | return (-1); | |
1040 | ||
1041 | /* Check for overflow */ | |
1042 | if (shift >= 64 || (*num << shift) >> shift != *num) { | |
1043 | if (hdl) | |
1044 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1045 | "numeric value is too large")); | |
1046 | return (-1); | |
1047 | } | |
1048 | ||
1049 | *num <<= shift; | |
1050 | } | |
1051 | ||
1052 | return (0); | |
1053 | } | |
1054 | ||
1055 | /* | |
1056 | * Given a propname=value nvpair to set, parse any numeric properties | |
1057 | * (index, boolean, etc) if they are specified as strings and add the | |
1058 | * resulting nvpair to the returned nvlist. | |
1059 | * | |
1060 | * At the DSL layer, all properties are either 64-bit numbers or strings. | |
1061 | * We want the user to be able to ignore this fact and specify properties | |
1062 | * as native values (numbers, for example) or as strings (to simplify | |
1063 | * command line utilities). This also handles converting index types | |
1064 | * (compression, checksum, etc) from strings to their on-disk index. | |
1065 | */ | |
1066 | int | |
1067 | zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop, | |
1068 | zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp, | |
1069 | const char *errbuf) | |
1070 | { | |
1071 | data_type_t datatype = nvpair_type(elem); | |
1072 | zprop_type_t proptype; | |
1073 | const char *propname; | |
1074 | char *value; | |
1075 | boolean_t isnone = B_FALSE; | |
1076 | ||
1077 | if (type == ZFS_TYPE_POOL) { | |
1078 | proptype = zpool_prop_get_type(prop); | |
1079 | propname = zpool_prop_to_name(prop); | |
1080 | } else { | |
1081 | proptype = zfs_prop_get_type(prop); | |
1082 | propname = zfs_prop_to_name(prop); | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * Convert any properties to the internal DSL value types. | |
1087 | */ | |
1088 | *svalp = NULL; | |
1089 | *ivalp = 0; | |
1090 | ||
1091 | switch (proptype) { | |
1092 | case PROP_TYPE_STRING: | |
1093 | if (datatype != DATA_TYPE_STRING) { | |
1094 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1095 | "'%s' must be a string"), nvpair_name(elem)); | |
1096 | goto error; | |
1097 | } | |
1098 | (void) nvpair_value_string(elem, svalp); | |
1099 | if (strlen(*svalp) >= ZFS_MAXPROPLEN) { | |
1100 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1101 | "'%s' is too long"), nvpair_name(elem)); | |
1102 | goto error; | |
1103 | } | |
1104 | break; | |
1105 | ||
1106 | case PROP_TYPE_NUMBER: | |
1107 | if (datatype == DATA_TYPE_STRING) { | |
1108 | (void) nvpair_value_string(elem, &value); | |
1109 | if (strcmp(value, "none") == 0) { | |
1110 | isnone = B_TRUE; | |
1111 | } else if (zfs_nicestrtonum(hdl, value, ivalp) | |
1112 | != 0) { | |
1113 | goto error; | |
1114 | } | |
1115 | } else if (datatype == DATA_TYPE_UINT64) { | |
1116 | (void) nvpair_value_uint64(elem, ivalp); | |
1117 | } else { | |
1118 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1119 | "'%s' must be a number"), nvpair_name(elem)); | |
1120 | goto error; | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | * Quota special: force 'none' and don't allow 0. | |
1125 | */ | |
1126 | if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone && | |
1127 | (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) { | |
1128 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1129 | "use 'none' to disable quota/refquota")); | |
1130 | goto error; | |
1131 | } | |
1132 | break; | |
1133 | ||
1134 | case PROP_TYPE_INDEX: | |
1135 | if (datatype != DATA_TYPE_STRING) { | |
1136 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1137 | "'%s' must be a string"), nvpair_name(elem)); | |
1138 | goto error; | |
1139 | } | |
1140 | ||
1141 | (void) nvpair_value_string(elem, &value); | |
1142 | ||
1143 | if (zprop_string_to_index(prop, value, ivalp, type) != 0) { | |
1144 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1145 | "'%s' must be one of '%s'"), propname, | |
1146 | zprop_values(prop, type)); | |
1147 | goto error; | |
1148 | } | |
1149 | break; | |
1150 | ||
1151 | default: | |
1152 | abort(); | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * Add the result to our return set of properties. | |
1157 | */ | |
1158 | if (*svalp != NULL) { | |
1159 | if (nvlist_add_string(ret, propname, *svalp) != 0) { | |
1160 | (void) no_memory(hdl); | |
1161 | return (-1); | |
1162 | } | |
1163 | } else { | |
1164 | if (nvlist_add_uint64(ret, propname, *ivalp) != 0) { | |
1165 | (void) no_memory(hdl); | |
1166 | return (-1); | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | return (0); | |
1171 | error: | |
1172 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1173 | return (-1); | |
1174 | } | |
1175 | ||
1176 | /* | |
1177 | * Given a comma-separated list of properties, construct a property list | |
1178 | * containing both user-defined and native properties. This function will | |
1179 | * return a NULL list if 'all' is specified, which can later be expanded | |
1180 | * by zprop_expand_list(). | |
1181 | */ | |
1182 | int | |
1183 | zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp, | |
1184 | zfs_type_t type) | |
1185 | { | |
1186 | size_t len; | |
1187 | char *s, *p; | |
1188 | char c; | |
1189 | int prop; | |
1190 | zprop_list_t *entry; | |
1191 | zprop_list_t **last; | |
1192 | ||
1193 | *listp = NULL; | |
1194 | last = listp; | |
1195 | ||
1196 | /* | |
1197 | * If 'all' is specified, return a NULL list. | |
1198 | */ | |
1199 | if (strcmp(props, "all") == 0) | |
1200 | return (0); | |
1201 | ||
1202 | /* | |
1203 | * If no props were specified, return an error. | |
1204 | */ | |
1205 | if (props[0] == '\0') { | |
1206 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1207 | "no properties specified")); | |
1208 | return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN, | |
1209 | "bad property list"))); | |
1210 | } | |
1211 | ||
1212 | /* | |
1213 | * It would be nice to use getsubopt() here, but the inclusion of column | |
1214 | * aliases makes this more effort than it's worth. | |
1215 | */ | |
1216 | s = props; | |
1217 | while (*s != '\0') { | |
1218 | if ((p = strchr(s, ',')) == NULL) { | |
1219 | len = strlen(s); | |
1220 | p = s + len; | |
1221 | } else { | |
1222 | len = p - s; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * Check for empty options. | |
1227 | */ | |
1228 | if (len == 0) { | |
1229 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1230 | "empty property name")); | |
1231 | return (zfs_error(hdl, EZFS_BADPROP, | |
1232 | dgettext(TEXT_DOMAIN, "bad property list"))); | |
1233 | } | |
1234 | ||
1235 | /* | |
1236 | * Check all regular property names. | |
1237 | */ | |
1238 | c = s[len]; | |
1239 | s[len] = '\0'; | |
1240 | prop = zprop_name_to_prop(s, type); | |
1241 | ||
1242 | if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type)) | |
1243 | prop = ZPROP_INVAL; | |
1244 | ||
1245 | /* | |
1246 | * When no property table entry can be found, return failure if | |
1247 | * this is a pool property or if this isn't a user-defined | |
1248 | * dataset property, | |
1249 | */ | |
1250 | if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL || | |
1251 | !zfs_prop_user(s))) { | |
1252 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1253 | "invalid property '%s'"), s); | |
1254 | return (zfs_error(hdl, EZFS_BADPROP, | |
1255 | dgettext(TEXT_DOMAIN, "bad property list"))); | |
1256 | } | |
1257 | ||
1258 | if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL) | |
1259 | return (-1); | |
1260 | ||
1261 | entry->pl_prop = prop; | |
1262 | if (prop == ZPROP_INVAL) { | |
1263 | if ((entry->pl_user_prop = zfs_strdup(hdl, s)) | |
1264 | == NULL) { | |
1265 | free(entry); | |
1266 | return (-1); | |
1267 | } | |
1268 | entry->pl_width = strlen(s); | |
1269 | } else { | |
1270 | entry->pl_width = zprop_width(prop, &entry->pl_fixed, | |
1271 | type); | |
1272 | } | |
1273 | ||
1274 | *last = entry; | |
1275 | last = &entry->pl_next; | |
1276 | ||
1277 | s = p; | |
1278 | if (c == ',') | |
1279 | s++; | |
1280 | } | |
1281 | ||
1282 | return (0); | |
1283 | } | |
1284 | ||
1285 | void | |
1286 | zprop_free_list(zprop_list_t *pl) | |
1287 | { | |
1288 | zprop_list_t *next; | |
1289 | ||
1290 | while (pl != NULL) { | |
1291 | next = pl->pl_next; | |
1292 | free(pl->pl_user_prop); | |
1293 | free(pl); | |
1294 | pl = next; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | typedef struct expand_data { | |
1299 | zprop_list_t **last; | |
1300 | libzfs_handle_t *hdl; | |
1301 | zfs_type_t type; | |
1302 | } expand_data_t; | |
1303 | ||
1304 | int | |
1305 | zprop_expand_list_cb(int prop, void *cb) | |
1306 | { | |
1307 | zprop_list_t *entry; | |
1308 | expand_data_t *edp = cb; | |
1309 | ||
1310 | if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL) | |
1311 | return (ZPROP_INVAL); | |
1312 | ||
1313 | entry->pl_prop = prop; | |
1314 | entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type); | |
1315 | entry->pl_all = B_TRUE; | |
1316 | ||
1317 | *(edp->last) = entry; | |
1318 | edp->last = &entry->pl_next; | |
1319 | ||
1320 | return (ZPROP_CONT); | |
1321 | } | |
1322 | ||
1323 | int | |
1324 | zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type) | |
1325 | { | |
1326 | zprop_list_t *entry; | |
1327 | zprop_list_t **last; | |
1328 | expand_data_t exp; | |
1329 | ||
1330 | if (*plp == NULL) { | |
1331 | /* | |
1332 | * If this is the very first time we've been called for an 'all' | |
1333 | * specification, expand the list to include all native | |
1334 | * properties. | |
1335 | */ | |
1336 | last = plp; | |
1337 | ||
1338 | exp.last = last; | |
1339 | exp.hdl = hdl; | |
1340 | exp.type = type; | |
1341 | ||
1342 | if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE, | |
1343 | B_FALSE, type) == ZPROP_INVAL) | |
1344 | return (-1); | |
1345 | ||
1346 | /* | |
1347 | * Add 'name' to the beginning of the list, which is handled | |
1348 | * specially. | |
1349 | */ | |
1350 | if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL) | |
1351 | return (-1); | |
1352 | ||
1353 | entry->pl_prop = (type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : | |
1354 | ZFS_PROP_NAME; | |
1355 | entry->pl_width = zprop_width(entry->pl_prop, | |
1356 | &entry->pl_fixed, type); | |
1357 | entry->pl_all = B_TRUE; | |
1358 | entry->pl_next = *plp; | |
1359 | *plp = entry; | |
1360 | } | |
1361 | return (0); | |
1362 | } | |
1363 | ||
1364 | int | |
1365 | zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered, | |
1366 | zfs_type_t type) | |
1367 | { | |
1368 | return (zprop_iter_common(func, cb, show_all, ordered, type)); | |
1369 | } |