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.
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.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
26 * Internal utility routines for the ZFS library.
29 #include <sys/param.h>
30 #include <sys/linker.h>
31 #include <sys/module.h>
44 #include <sys/mnttab.h>
45 #include <sys/mntent.h>
46 #include <sys/types.h>
50 #include "libzfs_impl.h"
56 libzfs_errno(libzfs_handle_t *hdl)
58 return (hdl->libzfs_error);
62 libzfs_error_action(libzfs_handle_t *hdl)
64 return (hdl->libzfs_action);
68 libzfs_error_description(libzfs_handle_t *hdl)
70 if (hdl->libzfs_desc[0] != '\0')
71 return (hdl->libzfs_desc);
73 switch (hdl->libzfs_error) {
75 return (dgettext(TEXT_DOMAIN, "out of memory"));
77 return (dgettext(TEXT_DOMAIN, "invalid property value"));
78 case EZFS_PROPREADONLY:
79 return (dgettext(TEXT_DOMAIN, "read-only property"));
81 return (dgettext(TEXT_DOMAIN, "property doesn't apply to "
82 "datasets of this type"));
83 case EZFS_PROPNONINHERIT:
84 return (dgettext(TEXT_DOMAIN, "property cannot be inherited"));
86 return (dgettext(TEXT_DOMAIN, "invalid quota or reservation"));
88 return (dgettext(TEXT_DOMAIN, "operation not applicable to "
89 "datasets of this type"));
91 return (dgettext(TEXT_DOMAIN, "pool or dataset is busy"));
93 return (dgettext(TEXT_DOMAIN, "pool or dataset exists"));
95 return (dgettext(TEXT_DOMAIN, "no such pool or dataset"));
97 return (dgettext(TEXT_DOMAIN, "invalid backup stream"));
99 return (dgettext(TEXT_DOMAIN, "dataset is read-only"));
101 return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for "
103 case EZFS_INVALIDNAME:
104 return (dgettext(TEXT_DOMAIN, "invalid name"));
105 case EZFS_BADRESTORE:
106 return (dgettext(TEXT_DOMAIN, "unable to restore to "
109 return (dgettext(TEXT_DOMAIN, "backup failed"));
111 return (dgettext(TEXT_DOMAIN, "invalid target vdev"));
113 return (dgettext(TEXT_DOMAIN, "no such device in pool"));
115 return (dgettext(TEXT_DOMAIN, "invalid device"));
116 case EZFS_NOREPLICAS:
117 return (dgettext(TEXT_DOMAIN, "no valid replicas"));
118 case EZFS_RESILVERING:
119 return (dgettext(TEXT_DOMAIN, "currently resilvering"));
120 case EZFS_BADVERSION:
121 return (dgettext(TEXT_DOMAIN, "unsupported version"));
122 case EZFS_POOLUNAVAIL:
123 return (dgettext(TEXT_DOMAIN, "pool is unavailable"));
124 case EZFS_DEVOVERFLOW:
125 return (dgettext(TEXT_DOMAIN, "too many devices in one vdev"));
127 return (dgettext(TEXT_DOMAIN, "must be an absolute path"));
128 case EZFS_CROSSTARGET:
129 return (dgettext(TEXT_DOMAIN, "operation crosses datasets or "
132 return (dgettext(TEXT_DOMAIN, "dataset in use by local zone"));
133 case EZFS_MOUNTFAILED:
134 return (dgettext(TEXT_DOMAIN, "mount failed"));
135 case EZFS_UMOUNTFAILED:
136 return (dgettext(TEXT_DOMAIN, "umount failed"));
137 case EZFS_UNSHARENFSFAILED:
138 return (dgettext(TEXT_DOMAIN, "unshare(1M) failed"));
139 case EZFS_SHARENFSFAILED:
140 return (dgettext(TEXT_DOMAIN, "share(1M) failed"));
141 case EZFS_UNSHARESMBFAILED:
142 return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
143 case EZFS_SHARESMBFAILED:
144 return (dgettext(TEXT_DOMAIN, "smb add share failed"));
146 return (dgettext(TEXT_DOMAIN, "permission denied"));
148 return (dgettext(TEXT_DOMAIN, "out of space"));
150 return (dgettext(TEXT_DOMAIN, "bad address"));
152 return (dgettext(TEXT_DOMAIN, "I/O error"));
154 return (dgettext(TEXT_DOMAIN, "signal received"));
156 return (dgettext(TEXT_DOMAIN, "device is reserved as a hot "
158 case EZFS_INVALCONFIG:
159 return (dgettext(TEXT_DOMAIN, "invalid vdev configuration"));
161 return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
163 return (dgettext(TEXT_DOMAIN, "no history available"));
165 return (dgettext(TEXT_DOMAIN, "failed to retrieve "
167 case EZFS_POOL_NOTSUP:
168 return (dgettext(TEXT_DOMAIN, "operation not supported "
169 "on this type of pool"));
170 case EZFS_POOL_INVALARG:
171 return (dgettext(TEXT_DOMAIN, "invalid argument for "
172 "this pool operation"));
173 case EZFS_NAMETOOLONG:
174 return (dgettext(TEXT_DOMAIN, "dataset name is too long"));
175 case EZFS_OPENFAILED:
176 return (dgettext(TEXT_DOMAIN, "open failed"));
178 return (dgettext(TEXT_DOMAIN,
179 "disk capacity information could not be retrieved"));
180 case EZFS_LABELFAILED:
181 return (dgettext(TEXT_DOMAIN, "write of label failed"));
183 return (dgettext(TEXT_DOMAIN, "invalid user/group"));
185 return (dgettext(TEXT_DOMAIN, "invalid permission"));
186 case EZFS_BADPERMSET:
187 return (dgettext(TEXT_DOMAIN, "invalid permission set name"));
188 case EZFS_NODELEGATION:
189 return (dgettext(TEXT_DOMAIN, "delegated administration is "
190 "disabled on pool"));
192 return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
194 return (dgettext(TEXT_DOMAIN, "device is in use as a cache"));
195 case EZFS_VDEVNOTSUP:
196 return (dgettext(TEXT_DOMAIN, "vdev specification is not "
199 return (dgettext(TEXT_DOMAIN, "operation not supported "
201 case EZFS_ACTIVE_SPARE:
202 return (dgettext(TEXT_DOMAIN, "pool has active shared spare "
204 case EZFS_UNPLAYED_LOGS:
205 return (dgettext(TEXT_DOMAIN, "log device has unplayed intent "
207 case EZFS_REFTAG_RELE:
208 return (dgettext(TEXT_DOMAIN, "no such tag on this dataset"));
209 case EZFS_REFTAG_HOLD:
210 return (dgettext(TEXT_DOMAIN, "tag already exists on this "
212 case EZFS_TAGTOOLONG:
213 return (dgettext(TEXT_DOMAIN, "tag too long"));
214 case EZFS_PIPEFAILED:
215 return (dgettext(TEXT_DOMAIN, "pipe create failed"));
216 case EZFS_THREADCREATEFAILED:
217 return (dgettext(TEXT_DOMAIN, "thread create failed"));
218 case EZFS_POSTSPLIT_ONLINE:
219 return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
222 return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
223 "use 'zpool scrub -s' to cancel current scrub"));
225 return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
227 return (dgettext(TEXT_DOMAIN, "unable to generate diffs"));
229 return (dgettext(TEXT_DOMAIN, "invalid diff data"));
230 case EZFS_POOLREADONLY:
231 return (dgettext(TEXT_DOMAIN, "pool is read-only"));
233 return (dgettext(TEXT_DOMAIN, "unknown error"));
235 assert(hdl->libzfs_error == 0);
236 return (dgettext(TEXT_DOMAIN, "no error"));
242 zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...)
248 (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc),
250 hdl->libzfs_desc_active = 1;
256 zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap)
258 (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action),
260 hdl->libzfs_error = error;
262 if (hdl->libzfs_desc_active)
263 hdl->libzfs_desc_active = 0;
265 hdl->libzfs_desc[0] = '\0';
267 if (hdl->libzfs_printerr) {
268 if (error == EZFS_UNKNOWN) {
269 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal "
270 "error: %s\n"), libzfs_error_description(hdl));
274 (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action,
275 libzfs_error_description(hdl));
276 if (error == EZFS_NOMEM)
282 zfs_error(libzfs_handle_t *hdl, int error, const char *msg)
284 return (zfs_error_fmt(hdl, error, "%s", msg));
289 zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
295 zfs_verror(hdl, error, fmt, ap);
303 zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt,
309 zfs_verror(hdl, EZFS_PERM, fmt, ap);
313 zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap);
317 zfs_verror(hdl, EZFS_IO, fmt, ap);
321 zfs_verror(hdl, EZFS_FAULT, fmt, ap);
325 zfs_verror(hdl, EZFS_INTR, fmt, ap);
333 zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
335 return (zfs_standard_error_fmt(hdl, error, "%s", msg));
340 zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
346 if (zfs_common_error(hdl, error, fmt, ap) != 0) {
354 zfs_verror(hdl, EZFS_IO, fmt, ap);
358 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
359 "dataset does not exist"));
360 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
365 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
369 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
370 "dataset already exists"));
371 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
375 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
377 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
380 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
383 zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
386 zfs_verror(hdl, EZFS_BADVERSION, fmt, ap);
389 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
390 "pool I/O is currently suspended"));
391 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
394 zfs_error_aux(hdl, strerror(error));
395 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
404 zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
406 return (zpool_standard_error_fmt(hdl, error, "%s", msg));
411 zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
417 if (zfs_common_error(hdl, error, fmt, ap) != 0) {
424 zfs_verror(hdl, EZFS_NODEVICE, fmt, ap);
429 dgettext(TEXT_DOMAIN, "no such pool or dataset"));
430 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
434 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
435 "pool already exists"));
436 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
440 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy"));
441 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
445 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
446 "one or more devices is currently unavailable"));
447 zfs_verror(hdl, EZFS_BADDEV, fmt, ap);
451 zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap);
455 zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap);
459 zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap);
464 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
468 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
469 "pool I/O is currently suspended"));
470 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
474 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
478 zfs_error_aux(hdl, strerror(error));
479 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
487 * Display an out of memory error message and abort the current program.
490 no_memory(libzfs_handle_t *hdl)
492 return (zfs_error(hdl, EZFS_NOMEM, "internal error"));
496 * A safe form of malloc() which will die if the allocation fails.
499 zfs_alloc(libzfs_handle_t *hdl, size_t size)
503 if ((data = calloc(1, size)) == NULL)
504 (void) no_memory(hdl);
510 * A safe form of asprintf() which will die if the allocation fails.
514 zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...)
522 err = vasprintf(&ret, fmt, ap);
527 (void) no_memory(hdl);
533 * A safe form of realloc(), which also zeroes newly allocated space.
536 zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize)
540 if ((ret = realloc(ptr, newsize)) == NULL) {
541 (void) no_memory(hdl);
545 bzero((char *)ret + oldsize, (newsize - oldsize));
550 * A safe form of strdup() which will die if the allocation fails.
553 zfs_strdup(libzfs_handle_t *hdl, const char *str)
557 if ((ret = strdup(str)) == NULL)
558 (void) no_memory(hdl);
564 * Convert a number to an appropriately human-readable output.
567 zfs_nicenum(uint64_t num, char *buf, size_t buflen)
578 u = " KMGTPE"[index];
581 (void) snprintf(buf, buflen, "%llu", n);
582 } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
584 * If this is an even multiple of the base, always display
585 * without any decimal precision.
587 (void) snprintf(buf, buflen, "%llu%c", n, u);
590 * We want to choose a precision that reflects the best choice
591 * for fitting in 5 characters. This can get rather tricky when
592 * we have numbers that are very close to an order of magnitude.
593 * For example, when displaying 10239 (which is really 9.999K),
594 * we want only a single place of precision for 10.0K. We could
595 * develop some complex heuristics for this, but it's much
596 * easier just to try each combination in turn.
599 for (i = 2; i >= 0; i--) {
600 if (snprintf(buf, buflen, "%.*f%c", i,
601 (double)num / (1ULL << 10 * index), u) <= 5)
608 libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
610 hdl->libzfs_printerr = printerr;
618 if (modfind("zfs") < 0) {
619 /* Not present in kernel, try loading it. */
620 if (kldload("zfs") < 0 || modfind("zfs") < 0) {
631 libzfs_handle_t *hdl;
633 if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
637 if (libzfs_load() < 0) {
642 if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
647 if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
648 (void) close(hdl->libzfs_fd);
653 hdl->libzfs_sharetab = fopen(ZFS_EXPORTS_PATH, "r");
657 libzfs_mnttab_init(hdl);
663 libzfs_fini(libzfs_handle_t *hdl)
665 (void) close(hdl->libzfs_fd);
666 if (hdl->libzfs_mnttab)
667 (void) fclose(hdl->libzfs_mnttab);
668 if (hdl->libzfs_sharetab)
669 (void) fclose(hdl->libzfs_sharetab);
670 zfs_uninit_libshare(hdl);
671 if (hdl->libzfs_log_str)
672 (void) free(hdl->libzfs_log_str);
673 zpool_free_handles(hdl);
675 libzfs_fru_clear(hdl, B_TRUE);
677 namespace_clear(hdl);
678 libzfs_mnttab_fini(hdl);
683 zpool_get_handle(zpool_handle_t *zhp)
685 return (zhp->zpool_hdl);
689 zfs_get_handle(zfs_handle_t *zhp)
691 return (zhp->zfs_hdl);
695 zfs_get_pool_handle(const zfs_handle_t *zhp)
697 return (zhp->zpool_hdl);
701 * Given a name, determine whether or not it's a valid path
702 * (starts with '/' or "./"). If so, walk the mnttab trying
703 * to match the device number. If not, treat the path as an
707 zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
709 struct stat64 statbuf;
710 struct extmnttab entry;
713 if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
715 * It's not a valid path, assume it's a name of type 'argtype'.
717 return (zfs_open(hdl, path, argtype));
720 if (stat64(path, &statbuf) != 0) {
721 (void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
726 rewind(hdl->libzfs_mnttab);
727 while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
728 if (makedevice(entry.mnt_major, entry.mnt_minor) ==
737 ret = statfs(path, &sfs);
739 statfs2mnttab(&sfs, &entry);
741 (void) fprintf(stderr, "%s: %s\n", path,
750 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
751 (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
756 return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
760 * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
764 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
768 zc->zc_nvlist_dst_size = len;
769 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
770 zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
777 * Called when an ioctl() which returns an nvlist fails with ENOMEM. This will
778 * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was
779 * filled in by the kernel to indicate the actual required size.
782 zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
784 free((void *)(uintptr_t)zc->zc_nvlist_dst);
785 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
786 zfs_alloc(hdl, zc->zc_nvlist_dst_size))
794 * Called to free the src and dst nvlists stored in the command structure.
797 zcmd_free_nvlists(zfs_cmd_t *zc)
799 free((void *)(uintptr_t)zc->zc_nvlist_conf);
800 free((void *)(uintptr_t)zc->zc_nvlist_src);
801 free((void *)(uintptr_t)zc->zc_nvlist_dst);
805 zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen,
811 verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0);
813 if ((packed = zfs_alloc(hdl, len)) == NULL)
816 verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0);
818 *outnv = (uint64_t)(uintptr_t)packed;
825 zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
827 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf,
828 &zc->zc_nvlist_conf_size, nvl));
832 zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
834 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src,
835 &zc->zc_nvlist_src_size, nvl));
839 * Unpacks an nvlist from the ZFS ioctl command structure.
842 zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp)
844 if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst,
845 zc->zc_nvlist_dst_size, nvlp, 0) != 0)
846 return (no_memory(hdl));
852 zfs_ioctl(libzfs_handle_t *hdl, unsigned long request, zfs_cmd_t *zc)
856 zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str;
857 error = ioctl(hdl->libzfs_fd, request, zc);
858 if (hdl->libzfs_log_str) {
859 free(hdl->libzfs_log_str);
860 hdl->libzfs_log_str = NULL;
868 * ================================================================
869 * API shared by zfs and zpool property management
870 * ================================================================
874 zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
876 zprop_list_t *pl = cbp->cb_proplist;
881 cbp->cb_first = B_FALSE;
882 if (cbp->cb_scripted)
886 * Start with the length of the column headers.
888 cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME"));
889 cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN,
891 cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
893 cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN,
895 cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
898 /* first property is always NAME */
899 assert(cbp->cb_proplist->pl_prop ==
900 ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ZFS_PROP_NAME));
903 * Go through and calculate the widths for each column. For the
904 * 'source' column, we kludge it up by taking the worst-case scenario of
905 * inheriting from the longest name. This is acceptable because in the
906 * majority of cases 'SOURCE' is the last column displayed, and we don't
907 * use the width anyway. Note that the 'VALUE' column can be oversized,
908 * if the name of the property is much longer than any values we find.
910 for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
914 if (pl->pl_prop != ZPROP_INVAL) {
915 const char *propname = (type == ZFS_TYPE_POOL) ?
916 zpool_prop_to_name(pl->pl_prop) :
917 zfs_prop_to_name(pl->pl_prop);
919 len = strlen(propname);
920 if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
921 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
923 len = strlen(pl->pl_user_prop);
924 if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
925 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
929 * 'VALUE' column. The first property is always the 'name'
930 * property that was tacked on either by /sbin/zfs's
931 * zfs_do_get() or when calling zprop_expand_list(), so we
932 * ignore its width. If the user specified the name property
933 * to display, then it will be later in the list in any case.
935 if (pl != cbp->cb_proplist &&
936 pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
937 cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
939 /* 'RECEIVED' column. */
940 if (pl != cbp->cb_proplist &&
941 pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD])
942 cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width;
945 * 'NAME' and 'SOURCE' columns
947 if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME :
949 pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) {
950 cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width;
951 cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width +
952 strlen(dgettext(TEXT_DOMAIN, "inherited from"));
957 * Now go through and print the headers.
959 for (i = 0; i < ZFS_GET_NCOLS; i++) {
960 switch (cbp->cb_columns[i]) {
962 title = dgettext(TEXT_DOMAIN, "NAME");
964 case GET_COL_PROPERTY:
965 title = dgettext(TEXT_DOMAIN, "PROPERTY");
968 title = dgettext(TEXT_DOMAIN, "VALUE");
971 title = dgettext(TEXT_DOMAIN, "RECEIVED");
974 title = dgettext(TEXT_DOMAIN, "SOURCE");
981 if (i == (ZFS_GET_NCOLS - 1) ||
982 cbp->cb_columns[i + 1] == GET_COL_NONE)
983 (void) printf("%s", title);
985 (void) printf("%-*s ",
986 cbp->cb_colwidths[cbp->cb_columns[i]],
994 * Display a single line of output, according to the settings in the callback
998 zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
999 const char *propname, const char *value, zprop_source_t sourcetype,
1000 const char *source, const char *recvd_value)
1007 * Ignore those source types that the user has chosen to ignore.
1009 if ((sourcetype & cbp->cb_sources) == 0)
1013 zprop_print_headers(cbp, cbp->cb_type);
1015 for (i = 0; i < ZFS_GET_NCOLS; i++) {
1016 switch (cbp->cb_columns[i]) {
1021 case GET_COL_PROPERTY:
1029 case GET_COL_SOURCE:
1030 switch (sourcetype) {
1031 case ZPROP_SRC_NONE:
1035 case ZPROP_SRC_DEFAULT:
1039 case ZPROP_SRC_LOCAL:
1043 case ZPROP_SRC_TEMPORARY:
1047 case ZPROP_SRC_INHERITED:
1048 (void) snprintf(buf, sizeof (buf),
1049 "inherited from %s", source);
1052 case ZPROP_SRC_RECEIVED:
1059 str = (recvd_value == NULL ? "-" : recvd_value);
1066 if (cbp->cb_columns[i + 1] == GET_COL_NONE)
1067 (void) printf("%s", str);
1068 else if (cbp->cb_scripted)
1069 (void) printf("%s\t", str);
1071 (void) printf("%-*s ",
1072 cbp->cb_colwidths[cbp->cb_columns[i]],
1076 (void) printf("\n");
1080 * Given a numeric suffix, convert the value into a number of bits that the
1081 * resulting value must be shifted.
1084 str2shift(libzfs_handle_t *hdl, const char *buf)
1086 const char *ends = "BKMGTPEZ";
1091 for (i = 0; i < strlen(ends); i++) {
1092 if (toupper(buf[0]) == ends[i])
1095 if (i == strlen(ends)) {
1096 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1097 "invalid numeric suffix '%s'"), buf);
1102 * We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't
1103 * allow 'BB' - that's just weird.
1105 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
1106 toupper(buf[0]) != 'B'))
1109 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1110 "invalid numeric suffix '%s'"), buf);
1115 * Convert a string of the form '100G' into a real number. Used when setting
1116 * properties or creating a volume. 'buf' is used to place an extended error
1117 * message for the caller to use.
1120 zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
1127 /* Check to see if this looks like a number. */
1128 if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
1130 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1131 "bad numeric value '%s'"), value);
1135 /* Rely on strtoull() to process the numeric portion. */
1137 *num = strtoull(value, &end, 10);
1140 * Check for ERANGE, which indicates that the value is too large to fit
1141 * in a 64-bit value.
1143 if (errno == ERANGE) {
1145 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1146 "numeric value is too large"));
1151 * If we have a decimal value, then do the computation with floating
1152 * point arithmetic. Otherwise, use standard arithmetic.
1155 double fval = strtod(value, &end);
1157 if ((shift = str2shift(hdl, end)) == -1)
1160 fval *= pow(2, shift);
1162 if (fval > UINT64_MAX) {
1164 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1165 "numeric value is too large"));
1169 *num = (uint64_t)fval;
1171 if ((shift = str2shift(hdl, end)) == -1)
1174 /* Check for overflow */
1175 if (shift >= 64 || (*num << shift) >> shift != *num) {
1177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1178 "numeric value is too large"));
1189 * Given a propname=value nvpair to set, parse any numeric properties
1190 * (index, boolean, etc) if they are specified as strings and add the
1191 * resulting nvpair to the returned nvlist.
1193 * At the DSL layer, all properties are either 64-bit numbers or strings.
1194 * We want the user to be able to ignore this fact and specify properties
1195 * as native values (numbers, for example) or as strings (to simplify
1196 * command line utilities). This also handles converting index types
1197 * (compression, checksum, etc) from strings to their on-disk index.
1200 zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop,
1201 zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp,
1204 data_type_t datatype = nvpair_type(elem);
1205 zprop_type_t proptype;
1206 const char *propname;
1208 boolean_t isnone = B_FALSE;
1210 if (type == ZFS_TYPE_POOL) {
1211 proptype = zpool_prop_get_type(prop);
1212 propname = zpool_prop_to_name(prop);
1214 proptype = zfs_prop_get_type(prop);
1215 propname = zfs_prop_to_name(prop);
1219 * Convert any properties to the internal DSL value types.
1225 case PROP_TYPE_STRING:
1226 if (datatype != DATA_TYPE_STRING) {
1227 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1228 "'%s' must be a string"), nvpair_name(elem));
1231 (void) nvpair_value_string(elem, svalp);
1232 if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
1233 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1234 "'%s' is too long"), nvpair_name(elem));
1239 case PROP_TYPE_NUMBER:
1240 if (datatype == DATA_TYPE_STRING) {
1241 (void) nvpair_value_string(elem, &value);
1242 if (strcmp(value, "none") == 0) {
1244 } else if (zfs_nicestrtonum(hdl, value, ivalp)
1248 } else if (datatype == DATA_TYPE_UINT64) {
1249 (void) nvpair_value_uint64(elem, ivalp);
1251 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1252 "'%s' must be a number"), nvpair_name(elem));
1257 * Quota special: force 'none' and don't allow 0.
1259 if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone &&
1260 (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) {
1261 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1262 "use 'none' to disable quota/refquota"));
1267 case PROP_TYPE_INDEX:
1268 if (datatype != DATA_TYPE_STRING) {
1269 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1270 "'%s' must be a string"), nvpair_name(elem));
1274 (void) nvpair_value_string(elem, &value);
1276 if (zprop_string_to_index(prop, value, ivalp, type) != 0) {
1277 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1278 "'%s' must be one of '%s'"), propname,
1279 zprop_values(prop, type));
1289 * Add the result to our return set of properties.
1291 if (*svalp != NULL) {
1292 if (nvlist_add_string(ret, propname, *svalp) != 0) {
1293 (void) no_memory(hdl);
1297 if (nvlist_add_uint64(ret, propname, *ivalp) != 0) {
1298 (void) no_memory(hdl);
1305 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1310 addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
1314 zprop_list_t *entry;
1316 prop = zprop_name_to_prop(propname, type);
1318 if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type))
1322 * When no property table entry can be found, return failure if
1323 * this is a pool property or if this isn't a user-defined
1326 if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
1327 (!zfs_prop_user(propname) && !zfs_prop_userquota(propname)))) {
1328 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1329 "invalid property '%s'"), propname);
1330 return (zfs_error(hdl, EZFS_BADPROP,
1331 dgettext(TEXT_DOMAIN, "bad property list")));
1334 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1337 entry->pl_prop = prop;
1338 if (prop == ZPROP_INVAL) {
1339 if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == NULL) {
1343 entry->pl_width = strlen(propname);
1345 entry->pl_width = zprop_width(prop, &entry->pl_fixed,
1355 * Given a comma-separated list of properties, construct a property list
1356 * containing both user-defined and native properties. This function will
1357 * return a NULL list if 'all' is specified, which can later be expanded
1358 * by zprop_expand_list().
1361 zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp,
1367 * If 'all' is specified, return a NULL list.
1369 if (strcmp(props, "all") == 0)
1373 * If no props were specified, return an error.
1375 if (props[0] == '\0') {
1376 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1377 "no properties specified"));
1378 return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
1379 "bad property list")));
1383 * It would be nice to use getsubopt() here, but the inclusion of column
1384 * aliases makes this more effort than it's worth.
1386 while (*props != '\0') {
1391 if ((p = strchr(props, ',')) == NULL) {
1392 len = strlen(props);
1399 * Check for empty options.
1402 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1403 "empty property name"));
1404 return (zfs_error(hdl, EZFS_BADPROP,
1405 dgettext(TEXT_DOMAIN, "bad property list")));
1409 * Check all regular property names.
1414 if (strcmp(props, "space") == 0) {
1415 static char *spaceprops[] = {
1416 "name", "avail", "used", "usedbysnapshots",
1417 "usedbydataset", "usedbyrefreservation",
1418 "usedbychildren", NULL
1422 for (i = 0; spaceprops[i]; i++) {
1423 if (addlist(hdl, spaceprops[i], listp, type))
1425 listp = &(*listp)->pl_next;
1428 if (addlist(hdl, props, listp, type))
1430 listp = &(*listp)->pl_next;
1442 zprop_free_list(zprop_list_t *pl)
1446 while (pl != NULL) {
1448 free(pl->pl_user_prop);
1454 typedef struct expand_data {
1455 zprop_list_t **last;
1456 libzfs_handle_t *hdl;
1461 zprop_expand_list_cb(int prop, void *cb)
1463 zprop_list_t *entry;
1464 expand_data_t *edp = cb;
1466 if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL)
1467 return (ZPROP_INVAL);
1469 entry->pl_prop = prop;
1470 entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type);
1471 entry->pl_all = B_TRUE;
1473 *(edp->last) = entry;
1474 edp->last = &entry->pl_next;
1476 return (ZPROP_CONT);
1480 zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type)
1482 zprop_list_t *entry;
1483 zprop_list_t **last;
1488 * If this is the very first time we've been called for an 'all'
1489 * specification, expand the list to include all native
1498 if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE,
1499 B_FALSE, type) == ZPROP_INVAL)
1503 * Add 'name' to the beginning of the list, which is handled
1506 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1509 entry->pl_prop = (type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME :
1511 entry->pl_width = zprop_width(entry->pl_prop,
1512 &entry->pl_fixed, type);
1513 entry->pl_all = B_TRUE;
1514 entry->pl_next = *plp;
1521 zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered,
1524 return (zprop_iter_common(func, cb, show_all, ordered, type));