xref: /illumos-gate/usr/src/cmd/zfs/zfs_main.c (revision ef150c2b)
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) 2011, 2016 by Delphix. All rights reserved.
25  * Copyright 2012 Milan Jurik. All rights reserved.
26  * Copyright 2019 Joyent, Inc.
27  * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved.
28  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
29  * Copyright (c) 2014 Integros [integros.com]
30  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
31  * Copyright 2016 Nexenta Systems, Inc.
32  * Copyright (c) 2018 Datto Inc.
33  * Copyright 2021 RackTop Systems, Inc.
34  */
35 
36 #include <assert.h>
37 #include <ctype.h>
38 #include <errno.h>
39 #include <getopt.h>
40 #include <libgen.h>
41 #include <libintl.h>
42 #include <libuutil.h>
43 #include <libnvpair.h>
44 #include <locale.h>
45 #include <stddef.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <strings.h>
49 #include <unistd.h>
50 #include <fcntl.h>
51 #include <zone.h>
52 #include <grp.h>
53 #include <pwd.h>
54 #include <signal.h>
55 #include <sys/debug.h>
56 #include <sys/list.h>
57 #include <sys/mkdev.h>
58 #include <sys/mntent.h>
59 #include <sys/mnttab.h>
60 #include <sys/mount.h>
61 #include <sys/stat.h>
62 #include <sys/fs/zfs.h>
63 #include <sys/types.h>
64 #include <time.h>
65 #include <sys/zfs_project.h>
66 #include <synch.h>
67 
68 #include <libzfs.h>
69 #include <libzfs_core.h>
70 #include <zfs_prop.h>
71 #include <zfs_deleg.h>
72 #include <libzutil.h>
73 #include <libuutil.h>
74 #include <aclutils.h>
75 #include <directory.h>
76 #include <idmap.h>
77 #include <libshare.h>
78 
79 #include "zfs_iter.h"
80 #include "zfs_util.h"
81 #include "zfs_comutil.h"
82 #include "zfs_projectutil.h"
83 
84 libzfs_handle_t *g_zfs;
85 
86 static FILE *mnttab_file;
87 static char history_str[HIS_MAX_RECORD_LEN];
88 static boolean_t log_history = B_TRUE;
89 
90 static int zfs_do_clone(int argc, char **argv);
91 static int zfs_do_create(int argc, char **argv);
92 static int zfs_do_destroy(int argc, char **argv);
93 static int zfs_do_get(int argc, char **argv);
94 static int zfs_do_inherit(int argc, char **argv);
95 static int zfs_do_list(int argc, char **argv);
96 static int zfs_do_mount(int argc, char **argv);
97 static int zfs_do_rename(int argc, char **argv);
98 static int zfs_do_rollback(int argc, char **argv);
99 static int zfs_do_set(int argc, char **argv);
100 static int zfs_do_upgrade(int argc, char **argv);
101 static int zfs_do_snapshot(int argc, char **argv);
102 static int zfs_do_unmount(int argc, char **argv);
103 static int zfs_do_share(int argc, char **argv);
104 static int zfs_do_unshare(int argc, char **argv);
105 static int zfs_do_send(int argc, char **argv);
106 static int zfs_do_receive(int argc, char **argv);
107 static int zfs_do_promote(int argc, char **argv);
108 static int zfs_do_userspace(int argc, char **argv);
109 static int zfs_do_allow(int argc, char **argv);
110 static int zfs_do_unallow(int argc, char **argv);
111 static int zfs_do_hold(int argc, char **argv);
112 static int zfs_do_holds(int argc, char **argv);
113 static int zfs_do_release(int argc, char **argv);
114 static int zfs_do_diff(int argc, char **argv);
115 static int zfs_do_bookmark(int argc, char **argv);
116 static int zfs_do_remap(int argc, char **argv);
117 static int zfs_do_channel_program(int argc, char **argv);
118 static int zfs_do_load_key(int argc, char **argv);
119 static int zfs_do_unload_key(int argc, char **argv);
120 static int zfs_do_change_key(int argc, char **argv);
121 static int zfs_do_project(int argc, char **argv);
122 
123 /*
124  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
125  */
126 
127 #ifdef DEBUG
128 const char *
_umem_debug_init(void)129 _umem_debug_init(void)
130 {
131 	return ("default,verbose"); /* $UMEM_DEBUG setting */
132 }
133 
134 const char *
_umem_logging_init(void)135 _umem_logging_init(void)
136 {
137 	return ("fail,contents"); /* $UMEM_LOGGING setting */
138 }
139 #endif
140 
141 typedef enum {
142 	HELP_CLONE,
143 	HELP_CREATE,
144 	HELP_DESTROY,
145 	HELP_GET,
146 	HELP_INHERIT,
147 	HELP_UPGRADE,
148 	HELP_LIST,
149 	HELP_MOUNT,
150 	HELP_PROMOTE,
151 	HELP_RECEIVE,
152 	HELP_RENAME,
153 	HELP_ROLLBACK,
154 	HELP_SEND,
155 	HELP_SET,
156 	HELP_SHARE,
157 	HELP_SNAPSHOT,
158 	HELP_UNMOUNT,
159 	HELP_UNSHARE,
160 	HELP_ALLOW,
161 	HELP_UNALLOW,
162 	HELP_USERSPACE,
163 	HELP_GROUPSPACE,
164 	HELP_PROJECTSPACE,
165 	HELP_PROJECT,
166 	HELP_HOLD,
167 	HELP_HOLDS,
168 	HELP_RELEASE,
169 	HELP_DIFF,
170 	HELP_REMAP,
171 	HELP_BOOKMARK,
172 	HELP_CHANNEL_PROGRAM,
173 	HELP_LOAD_KEY,
174 	HELP_UNLOAD_KEY,
175 	HELP_CHANGE_KEY,
176 } zfs_help_t;
177 
178 typedef struct zfs_command {
179 	const char	*name;
180 	int		(*func)(int argc, char **argv);
181 	zfs_help_t	usage;
182 } zfs_command_t;
183 
184 /*
185  * Master command table.  Each ZFS command has a name, associated function, and
186  * usage message.  The usage messages need to be internationalized, so we have
187  * to have a function to return the usage message based on a command index.
188  *
189  * These commands are organized according to how they are displayed in the usage
190  * message.  An empty command (one with a NULL name) indicates an empty line in
191  * the generic usage message.
192  */
193 static zfs_command_t command_table[] = {
194 	{ "create",	zfs_do_create,		HELP_CREATE		},
195 	{ "destroy",	zfs_do_destroy,		HELP_DESTROY		},
196 	{ NULL },
197 	{ "snapshot",	zfs_do_snapshot,	HELP_SNAPSHOT		},
198 	{ "rollback",	zfs_do_rollback,	HELP_ROLLBACK		},
199 	{ "clone",	zfs_do_clone,		HELP_CLONE		},
200 	{ "promote",	zfs_do_promote,		HELP_PROMOTE		},
201 	{ "rename",	zfs_do_rename,		HELP_RENAME		},
202 	{ "bookmark",	zfs_do_bookmark,	HELP_BOOKMARK		},
203 	{ "program",    zfs_do_channel_program, HELP_CHANNEL_PROGRAM    },
204 	{ NULL },
205 	{ "list",	zfs_do_list,		HELP_LIST		},
206 	{ NULL },
207 	{ "set",	zfs_do_set,		HELP_SET		},
208 	{ "get",	zfs_do_get,		HELP_GET		},
209 	{ "inherit",	zfs_do_inherit,		HELP_INHERIT		},
210 	{ "upgrade",	zfs_do_upgrade,		HELP_UPGRADE		},
211 	{ NULL },
212 	{ "userspace",	zfs_do_userspace,	HELP_USERSPACE		},
213 	{ "groupspace",	zfs_do_userspace,	HELP_GROUPSPACE		},
214 	{ "projectspace", zfs_do_userspace,	HELP_PROJECTSPACE	},
215 	{ NULL },
216 	{ "project",	zfs_do_project,		HELP_PROJECT		},
217 	{ NULL },
218 	{ "mount",	zfs_do_mount,		HELP_MOUNT		},
219 	{ "unmount",	zfs_do_unmount,		HELP_UNMOUNT		},
220 	{ "share",	zfs_do_share,		HELP_SHARE		},
221 	{ "unshare",	zfs_do_unshare,		HELP_UNSHARE		},
222 	{ NULL },
223 	{ "send",	zfs_do_send,		HELP_SEND		},
224 	{ "receive",	zfs_do_receive,		HELP_RECEIVE		},
225 	{ NULL },
226 	{ "allow",	zfs_do_allow,		HELP_ALLOW		},
227 	{ NULL },
228 	{ "unallow",	zfs_do_unallow,		HELP_UNALLOW		},
229 	{ NULL },
230 	{ "hold",	zfs_do_hold,		HELP_HOLD		},
231 	{ "holds",	zfs_do_holds,		HELP_HOLDS		},
232 	{ "release",	zfs_do_release,		HELP_RELEASE		},
233 	{ "diff",	zfs_do_diff,		HELP_DIFF		},
234 	{ "remap",	zfs_do_remap,		HELP_REMAP		},
235 	{ "load-key",	zfs_do_load_key,	HELP_LOAD_KEY		},
236 	{ "unload-key",	zfs_do_unload_key,	HELP_UNLOAD_KEY		},
237 	{ "change-key",	zfs_do_change_key,	HELP_CHANGE_KEY		},
238 };
239 
240 #define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))
241 
242 zfs_command_t *current_command;
243 
244 static const char *
get_usage(zfs_help_t idx)245 get_usage(zfs_help_t idx)
246 {
247 	switch (idx) {
248 	case HELP_CLONE:
249 		return (gettext("\tclone [-p] [-o property=value] ... "
250 		    "<snapshot> <filesystem|volume>\n"));
251 	case HELP_CREATE:
252 		return (gettext("\tcreate [-Pnpv] [-o property=value] ... "
253 		    "<filesystem>\n"
254 		    "\tcreate [-Pnpsv] [-b blocksize] [-o property=value] ... "
255 		    "-V <size> <volume>\n"));
256 	case HELP_DESTROY:
257 		return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
258 		    "\tdestroy [-dnpRrv] "
259 		    "<filesystem|volume>@<snap>[%<snap>][,...]\n"
260 		    "\tdestroy <filesystem|volume>#<bookmark>\n"));
261 	case HELP_GET:
262 		return (gettext("\tget [-rHp] [-d max] "
263 		    "[-o \"all\" | field[,...]]\n"
264 		    "\t    [-t type[,...]] [-s source[,...]]\n"
265 		    "\t    <\"all\" | property[,...]> "
266 		    "[filesystem|volume|snapshot|bookmark] ...\n"));
267 	case HELP_INHERIT:
268 		return (gettext("\tinherit [-rS] <property> "
269 		    "<filesystem|volume|snapshot> ...\n"));
270 	case HELP_UPGRADE:
271 		return (gettext("\tupgrade [-v]\n"
272 		    "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
273 	case HELP_LIST:
274 		return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
275 		    "[-s property]...\n\t    [-S property]... [-t type[,...]] "
276 		    "[filesystem|volume|snapshot] ...\n"));
277 	case HELP_MOUNT:
278 		return (gettext("\tmount\n"
279 		    "\tmount [-lvO] [-o opts] <-a | filesystem>\n"));
280 	case HELP_PROMOTE:
281 		return (gettext("\tpromote <clone-filesystem>\n"));
282 	case HELP_RECEIVE:
283 		return (gettext("\treceive [-vnsFhu] "
284 		    "[-o <property>=<value>] ... [-x <property>] ...\n"
285 		    "\t    <filesystem|volume|snapshot>\n"
286 		    "\treceive [-vnsFhu] [-o <property>=<value>] ... "
287 		    "[-x <property>] ... \n"
288 		    "\t    [-d | -e] <filesystem>\n"
289 		    "\treceive -A <filesystem|volume>\n"));
290 	case HELP_RENAME:
291 		return (gettext("\trename [-f] <filesystem|volume|snapshot> "
292 		    "<filesystem|volume|snapshot>\n"
293 		    "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
294 		    "\trename -r <snapshot> <snapshot>\n"));
295 	case HELP_ROLLBACK:
296 		return (gettext("\trollback [-rRf] <snapshot>\n"));
297 	case HELP_SEND:
298 		return (gettext("\tsend [-DnPpRvLecwhb] [-[iI] snapshot] "
299 		    "<snapshot>\n"
300 		    "\tsend [-nvPLecw] [-i snapshot|bookmark] "
301 		    "<filesystem|volume|snapshot>\n"
302 		    "\tsend [-nvPe] -t <receive_resume_token>\n"));
303 	case HELP_SET:
304 		return (gettext("\tset <property=value> ... "
305 		    "<filesystem|volume|snapshot> ...\n"));
306 	case HELP_SHARE:
307 		return (gettext("\tshare [-l] <-a | filesystem>\n"));
308 	case HELP_SNAPSHOT:
309 		return (gettext("\tsnapshot [-r] [-o property=value] ... "
310 		    "<filesystem|volume>@<snap> ...\n"));
311 	case HELP_UNMOUNT:
312 		return (gettext("\tunmount [-f] "
313 		    "<-a | filesystem|mountpoint>\n"));
314 	case HELP_UNSHARE:
315 		return (gettext("\tunshare "
316 		    "<-a | filesystem|mountpoint>\n"));
317 	case HELP_ALLOW:
318 		return (gettext("\tallow <filesystem|volume>\n"
319 		    "\tallow [-ldug] "
320 		    "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
321 		    "\t    <filesystem|volume>\n"
322 		    "\tallow [-ld] -e <perm|@setname>[,...] "
323 		    "<filesystem|volume>\n"
324 		    "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
325 		    "\tallow -s @setname <perm|@setname>[,...] "
326 		    "<filesystem|volume>\n"));
327 	case HELP_UNALLOW:
328 		return (gettext("\tunallow [-rldug] "
329 		    "<\"everyone\"|user|group>[,...]\n"
330 		    "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
331 		    "\tunallow [-rld] -e [<perm|@setname>[,...]] "
332 		    "<filesystem|volume>\n"
333 		    "\tunallow [-r] -c [<perm|@setname>[,...]] "
334 		    "<filesystem|volume>\n"
335 		    "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
336 		    "<filesystem|volume>\n"));
337 	case HELP_USERSPACE:
338 		return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
339 		    "[-s field] ...\n"
340 		    "\t    [-S field] ... [-t type[,...]] "
341 		    "<filesystem|snapshot>\n"));
342 	case HELP_GROUPSPACE:
343 		return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
344 		    "[-s field] ...\n"
345 		    "\t    [-S field] ... [-t type[,...]] "
346 		    "<filesystem|snapshot>\n"));
347 	case HELP_PROJECTSPACE:
348 		return (gettext("\tprojectspace [-Hp] [-o field[,...]] "
349 		    "[-s field] ... \n"
350 		    "\t    [-S field] ... <filesystem|snapshot>\n"));
351 	case HELP_PROJECT:
352 		return (gettext("\tproject [-d|-r] <directory|file ...>\n"
353 		    "\tproject -c [-0] [-d|-r] [-p id] <directory|file ...>\n"
354 		    "\tproject -C [-k] [-r] <directory ...>\n"
355 		    "\tproject [-p id] [-r] [-s] <directory ...>\n"));
356 	case HELP_HOLD:
357 		return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
358 	case HELP_HOLDS:
359 		return (gettext("\tholds [-r] <snapshot> ...\n"));
360 	case HELP_RELEASE:
361 		return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
362 	case HELP_DIFF:
363 		return (gettext("\tdiff [-FHt] <snapshot> "
364 		    "[snapshot|filesystem]\n"));
365 	case HELP_REMAP:
366 		return (gettext("\tremap <filesystem | volume>\n"));
367 	case HELP_BOOKMARK:
368 		return (gettext("\tbookmark <snapshot> <bookmark>\n"));
369 	case HELP_CHANNEL_PROGRAM:
370 		return (gettext("\tprogram [-jn] [-t <instruction limit>] "
371 		    "[-m <memory limit (b)>] <pool> <program file> "
372 		    "[lua args...]\n"));
373 	case HELP_LOAD_KEY:
374 		return (gettext("\tload-key [-rn] [-L <keylocation>] "
375 		    "<-a | filesystem|volume>\n"));
376 	case HELP_UNLOAD_KEY:
377 		return (gettext("\tunload-key [-r] "
378 		    "<-a | filesystem|volume>\n"));
379 	case HELP_CHANGE_KEY:
380 		return (gettext("\tchange-key [-l] [-o keyformat=<value>]\n"
381 		    "\t    [-o keylocation=<value>] [-o pbkfd2iters=<value>]\n"
382 		    "\t    <filesystem|volume>\n"
383 		    "\tchange-key -i [-l] <filesystem|volume>\n"));
384 	}
385 
386 	abort();
387 	/* NOTREACHED */
388 }
389 
390 void
nomem(void)391 nomem(void)
392 {
393 	(void) fprintf(stderr, gettext("internal error: out of memory\n"));
394 	exit(1);
395 }
396 
397 /*
398  * Utility function to guarantee malloc() success.
399  */
400 
401 void *
safe_malloc(size_t size)402 safe_malloc(size_t size)
403 {
404 	void *data;
405 
406 	if ((data = calloc(1, size)) == NULL)
407 		nomem();
408 
409 	return (data);
410 }
411 
412 void *
safe_realloc(void * data,size_t size)413 safe_realloc(void *data, size_t size)
414 {
415 	void *newp;
416 	if ((newp = realloc(data, size)) == NULL) {
417 		free(data);
418 		nomem();
419 	}
420 
421 	return (newp);
422 }
423 
424 static char *
safe_strdup(char * str)425 safe_strdup(char *str)
426 {
427 	char *dupstr = strdup(str);
428 
429 	if (dupstr == NULL)
430 		nomem();
431 
432 	return (dupstr);
433 }
434 
435 /*
436  * Callback routine that will print out information for each of
437  * the properties.
438  */
439 static int
usage_prop_cb(int prop,void * cb)440 usage_prop_cb(int prop, void *cb)
441 {
442 	FILE *fp = cb;
443 
444 	(void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
445 
446 	if (zfs_prop_readonly(prop))
447 		(void) fprintf(fp, " NO    ");
448 	else
449 		(void) fprintf(fp, "YES    ");
450 
451 	if (zfs_prop_inheritable(prop))
452 		(void) fprintf(fp, "  YES   ");
453 	else
454 		(void) fprintf(fp, "   NO   ");
455 
456 	if (zfs_prop_values(prop) == NULL)
457 		(void) fprintf(fp, "-\n");
458 	else
459 		(void) fprintf(fp, "%s\n", zfs_prop_values(prop));
460 
461 	return (ZPROP_CONT);
462 }
463 
464 /*
465  * Display usage message.  If we're inside a command, display only the usage for
466  * that command.  Otherwise, iterate over the entire command table and display
467  * a complete usage message.
468  */
469 static void
usage(boolean_t requested)470 usage(boolean_t requested)
471 {
472 	int i;
473 	boolean_t show_properties = B_FALSE;
474 	FILE *fp = requested ? stdout : stderr;
475 
476 	if (current_command == NULL) {
477 
478 		(void) fprintf(fp, gettext("usage: zfs command args ...\n"));
479 		(void) fprintf(fp,
480 		    gettext("where 'command' is one of the following:\n\n"));
481 
482 		for (i = 0; i < NCOMMAND; i++) {
483 			if (command_table[i].name == NULL)
484 				(void) fprintf(fp, "\n");
485 			else
486 				(void) fprintf(fp, "%s",
487 				    get_usage(command_table[i].usage));
488 		}
489 
490 		(void) fprintf(fp, gettext("\nEach dataset is of the form: "
491 		    "pool/[dataset/]*dataset[@name]\n"));
492 	} else {
493 		(void) fprintf(fp, gettext("usage:\n"));
494 		(void) fprintf(fp, "%s", get_usage(current_command->usage));
495 	}
496 
497 	if (current_command != NULL &&
498 	    (strcmp(current_command->name, "set") == 0 ||
499 	    strcmp(current_command->name, "get") == 0 ||
500 	    strcmp(current_command->name, "inherit") == 0 ||
501 	    strcmp(current_command->name, "list") == 0))
502 		show_properties = B_TRUE;
503 
504 	if (show_properties) {
505 		(void) fprintf(fp,
506 		    gettext("\nThe following properties are supported:\n"));
507 
508 		(void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
509 		    "PROPERTY", "EDIT", "INHERIT", "VALUES");
510 
511 		/* Iterate over all properties */
512 		(void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
513 		    ZFS_TYPE_DATASET);
514 
515 		(void) fprintf(fp, "\t%-15s ", "userused@...");
516 		(void) fprintf(fp, " NO       NO   <size>\n");
517 		(void) fprintf(fp, "\t%-15s ", "groupused@...");
518 		(void) fprintf(fp, " NO       NO   <size>\n");
519 		(void) fprintf(fp, "\t%-15s ", "projectused@...");
520 		(void) fprintf(fp, " NO       NO   <size>\n");
521 		(void) fprintf(fp, "\t%-15s ", "userobjused@...");
522 		(void) fprintf(fp, " NO       NO   <size>\n");
523 		(void) fprintf(fp, "\t%-15s ", "groupobjused@...");
524 		(void) fprintf(fp, " NO       NO   <size>\n");
525 		(void) fprintf(fp, "\t%-15s ", "projectobjused@...");
526 		(void) fprintf(fp, " NO       NO   <size>\n");
527 		(void) fprintf(fp, "\t%-15s ", "userquota@...");
528 		(void) fprintf(fp, "YES       NO   <size> | none\n");
529 		(void) fprintf(fp, "\t%-15s ", "groupquota@...");
530 		(void) fprintf(fp, "YES       NO   <size> | none\n");
531 		(void) fprintf(fp, "\t%-15s ", "projectquota@...");
532 		(void) fprintf(fp, "YES       NO   <size> | none\n");
533 		(void) fprintf(fp, "\t%-15s ", "userobjquota@...");
534 		(void) fprintf(fp, "YES       NO   <size> | none\n");
535 		(void) fprintf(fp, "\t%-15s ", "groupobjquota@...");
536 		(void) fprintf(fp, "YES       NO   <size> | none\n");
537 		(void) fprintf(fp, "\t%-15s ", "projectobjquota@...");
538 		(void) fprintf(fp, "YES       NO   <size> | none\n");
539 		(void) fprintf(fp, "\t%-15s ", "written@<snap>");
540 		(void) fprintf(fp, " NO       NO   <size>\n");
541 
542 		(void) fprintf(fp, gettext("\nSizes are specified in bytes "
543 		    "with standard units such as K, M, G, etc.\n"));
544 		(void) fprintf(fp, gettext("\nUser-defined properties can "
545 		    "be specified by using a name containing a colon (:).\n"));
546 		(void) fprintf(fp, gettext("\nThe {user|group|project}"
547 		    "[obj]{used|quota}@ properties must be appended with\n"
548 		    "a user|group|project specifier of one of these forms:\n"
549 		    "    POSIX name      (eg: \"matt\")\n"
550 		    "    POSIX id        (eg: \"126829\")\n"
551 		    "    SMB name@domain (eg: \"matt@sun\")\n"
552 		    "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
553 	} else {
554 		(void) fprintf(fp,
555 		    gettext("\nFor the property list, run: %s\n"),
556 		    "zfs set|get");
557 		(void) fprintf(fp,
558 		    gettext("\nFor the delegated permission list, run: %s\n"),
559 		    "zfs allow|unallow");
560 	}
561 
562 	/*
563 	 * See comments at end of main().
564 	 */
565 	if (getenv("ZFS_ABORT") != NULL) {
566 		(void) printf("dumping core by request\n");
567 		abort();
568 	}
569 
570 	exit(requested ? 0 : 2);
571 }
572 
573 /*
574  * Take a property=value argument string and add it to the given nvlist.
575  * Modifies the argument inplace.
576  */
577 static boolean_t
parseprop(nvlist_t * props,char * propname)578 parseprop(nvlist_t *props, char *propname)
579 {
580 	char *propval;
581 
582 	if ((propval = strchr(propname, '=')) == NULL) {
583 		(void) fprintf(stderr, gettext("missing "
584 		    "'=' for property=value argument\n"));
585 		return (B_FALSE);
586 	}
587 	*propval = '\0';
588 	propval++;
589 	if (nvlist_exists(props, propname)) {
590 		(void) fprintf(stderr, gettext("property '%s' "
591 		    "specified multiple times\n"), propname);
592 		return (B_FALSE);
593 	}
594 	if (nvlist_add_string(props, propname, propval) != 0)
595 		nomem();
596 	return (B_TRUE);
597 }
598 
599 /*
600  * Take a property name argument and add it to the given nvlist.
601  * Modifies the argument inplace.
602  */
603 static boolean_t
parsepropname(nvlist_t * props,char * propname)604 parsepropname(nvlist_t *props, char *propname)
605 {
606 	if (strchr(propname, '=') != NULL) {
607 		(void) fprintf(stderr, gettext("invalid character "
608 		    "'=' in property argument\n"));
609 		return (B_FALSE);
610 	}
611 	if (nvlist_exists(props, propname)) {
612 		(void) fprintf(stderr, gettext("property '%s' "
613 		    "specified multiple times\n"), propname);
614 		return (B_FALSE);
615 	}
616 	if (nvlist_add_boolean(props, propname) != 0)
617 		nomem();
618 	return (B_TRUE);
619 }
620 
621 static int
parse_depth(char * opt,int * flags)622 parse_depth(char *opt, int *flags)
623 {
624 	char *tmp;
625 	int depth;
626 
627 	depth = (int)strtol(opt, &tmp, 0);
628 	if (*tmp) {
629 		(void) fprintf(stderr,
630 		    gettext("%s is not an integer\n"), optarg);
631 		usage(B_FALSE);
632 	}
633 	if (depth < 0) {
634 		(void) fprintf(stderr,
635 		    gettext("Depth can not be negative.\n"));
636 		usage(B_FALSE);
637 	}
638 	*flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
639 	return (depth);
640 }
641 
642 #define	PROGRESS_DELAY 2		/* seconds */
643 
644 static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
645 static time_t pt_begin;
646 static char *pt_header = NULL;
647 static boolean_t pt_shown;
648 
649 static void
start_progress_timer(void)650 start_progress_timer(void)
651 {
652 	pt_begin = time(NULL) + PROGRESS_DELAY;
653 	pt_shown = B_FALSE;
654 }
655 
656 static void
set_progress_header(char * header)657 set_progress_header(char *header)
658 {
659 	assert(pt_header == NULL);
660 	pt_header = safe_strdup(header);
661 	if (pt_shown) {
662 		(void) printf("%s: ", header);
663 		(void) fflush(stdout);
664 	}
665 }
666 
667 static void
update_progress(char * update)668 update_progress(char *update)
669 {
670 	if (!pt_shown && time(NULL) > pt_begin) {
671 		int len = strlen(update);
672 
673 		(void) printf("%s: %s%*.*s", pt_header, update, len, len,
674 		    pt_reverse);
675 		(void) fflush(stdout);
676 		pt_shown = B_TRUE;
677 	} else if (pt_shown) {
678 		int len = strlen(update);
679 
680 		(void) printf("%s%*.*s", update, len, len, pt_reverse);
681 		(void) fflush(stdout);
682 	}
683 }
684 
685 static void
finish_progress(char * done)686 finish_progress(char *done)
687 {
688 	if (pt_shown) {
689 		(void) printf("%s\n", done);
690 		(void) fflush(stdout);
691 	}
692 	free(pt_header);
693 	pt_header = NULL;
694 }
695 
696 static int
zfs_mount_and_share(libzfs_handle_t * hdl,const char * dataset,zfs_type_t type)697 zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
698 {
699 	zfs_handle_t *zhp = NULL;
700 	int ret = 0;
701 
702 	zhp = zfs_open(hdl, dataset, type);
703 	if (zhp == NULL)
704 		return (1);
705 
706 	/*
707 	 * Volumes may neither be mounted or shared.  Potentially in the
708 	 * future filesystems detected on these volumes could be mounted.
709 	 */
710 	if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
711 		zfs_close(zhp);
712 		return (0);
713 	}
714 
715 	/*
716 	 * Mount and/or share the new filesystem as appropriate.  We provide a
717 	 * verbose error message to let the user know that their filesystem was
718 	 * in fact created, even if we failed to mount or share it.
719 	 *
720 	 * If the user doesn't want the dataset automatically mounted, then
721 	 * skip the mount/share step
722 	 */
723 	if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
724 	    zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
725 		if (zfs_mount(zhp, NULL, 0) != 0) {
726 			(void) fprintf(stderr, gettext("filesystem "
727 			    "successfully created, but not mounted\n"));
728 			ret = 1;
729 		} else if (zfs_share(zhp) != 0) {
730 			(void) fprintf(stderr, gettext("filesystem "
731 			    "successfully created, but not shared\n"));
732 			ret = 1;
733 		}
734 	}
735 
736 	zfs_close(zhp);
737 
738 	return (ret);
739 }
740 
741 /*
742  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
743  *
744  * Given an existing dataset, create a writable copy whose initial contents
745  * are the same as the source.  The newly created dataset maintains a
746  * dependency on the original; the original cannot be destroyed so long as
747  * the clone exists.
748  *
749  * The '-p' flag creates all the non-existing ancestors of the target first.
750  */
751 static int
zfs_do_clone(int argc,char ** argv)752 zfs_do_clone(int argc, char **argv)
753 {
754 	zfs_handle_t *zhp = NULL;
755 	boolean_t parents = B_FALSE;
756 	nvlist_t *props;
757 	int ret = 0;
758 	int c;
759 
760 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
761 		nomem();
762 
763 	/* check options */
764 	while ((c = getopt(argc, argv, "o:p")) != -1) {
765 		switch (c) {
766 		case 'o':
767 			if (!parseprop(props, optarg)) {
768 				nvlist_free(props);
769 				return (1);
770 			}
771 			break;
772 		case 'p':
773 			parents = B_TRUE;
774 			break;
775 		case '?':
776 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
777 			    optopt);
778 			goto usage;
779 		}
780 	}
781 
782 	argc -= optind;
783 	argv += optind;
784 
785 	/* check number of arguments */
786 	if (argc < 1) {
787 		(void) fprintf(stderr, gettext("missing source dataset "
788 		    "argument\n"));
789 		goto usage;
790 	}
791 	if (argc < 2) {
792 		(void) fprintf(stderr, gettext("missing target dataset "
793 		    "argument\n"));
794 		goto usage;
795 	}
796 	if (argc > 2) {
797 		(void) fprintf(stderr, gettext("too many arguments\n"));
798 		goto usage;
799 	}
800 
801 	/* open the source dataset */
802 	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
803 		return (1);
804 
805 	if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
806 	    ZFS_TYPE_VOLUME)) {
807 		/*
808 		 * Now create the ancestors of the target dataset.  If the
809 		 * target already exists and '-p' option was used we should not
810 		 * complain.
811 		 */
812 		if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
813 		    ZFS_TYPE_VOLUME))
814 			return (0);
815 		if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
816 			return (1);
817 	}
818 
819 	/* pass to libzfs */
820 	ret = zfs_clone(zhp, argv[1], props);
821 
822 	/* create the mountpoint if necessary */
823 	if (ret == 0) {
824 		if (log_history) {
825 			(void) zpool_log_history(g_zfs, history_str);
826 			log_history = B_FALSE;
827 		}
828 
829 		ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
830 	}
831 
832 	zfs_close(zhp);
833 	nvlist_free(props);
834 
835 	return (!!ret);
836 
837 usage:
838 	if (zhp)
839 		zfs_close(zhp);
840 	nvlist_free(props);
841 	usage(B_FALSE);
842 	return (-1);
843 }
844 
845 /*
846  * zfs create [-Pnpv] [-o prop=value] ... fs
847  * zfs create [-Pnpsv] [-b blocksize] [-o prop=value] ... -V vol size
848  *
849  * Create a new dataset.  This command can be used to create filesystems
850  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
851  * For volumes, the user must specify a size to be used.
852  *
853  * The '-s' flag applies only to volumes, and indicates that we should not try
854  * to set the reservation for this volume.  By default we set a reservation
855  * equal to the size for any volume.  For pools with SPA_VERSION >=
856  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
857  *
858  * The '-p' flag creates all the non-existing ancestors of the target first.
859  *
860  * The '-n' flag is no-op (dry run) mode.  This will perform a user-space sanity
861  * check of arguments and properties, but does not check for permissions,
862  * available space, etc.
863  *
864  * The '-v' flag is for verbose output.
865  *
866  * The '-P' flag is used for parseable output.  It implies '-v'.
867  */
868 static int
zfs_do_create(int argc,char ** argv)869 zfs_do_create(int argc, char **argv)
870 {
871 	zfs_type_t type = ZFS_TYPE_FILESYSTEM;
872 	zpool_handle_t *zpool_handle = NULL;
873 	nvlist_t *real_props = NULL;
874 	uint64_t volsize = 0;
875 	int c;
876 	boolean_t noreserve = B_FALSE;
877 	boolean_t bflag = B_FALSE;
878 	boolean_t parents = B_FALSE;
879 	boolean_t dryrun = B_FALSE;
880 	boolean_t verbose = B_FALSE;
881 	boolean_t parseable = B_FALSE;
882 	int ret = 1;
883 	nvlist_t *props;
884 	uint64_t intval;
885 
886 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
887 		nomem();
888 
889 	/* check options */
890 	while ((c = getopt(argc, argv, ":PV:b:nso:pv")) != -1) {
891 		switch (c) {
892 		case 'V':
893 			type = ZFS_TYPE_VOLUME;
894 			if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
895 				(void) fprintf(stderr, gettext("bad volume "
896 				    "size '%s': %s\n"), optarg,
897 				    libzfs_error_description(g_zfs));
898 				goto error;
899 			}
900 
901 			if (nvlist_add_uint64(props,
902 			    zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
903 				nomem();
904 			volsize = intval;
905 			break;
906 		case 'P':
907 			verbose = B_TRUE;
908 			parseable = B_TRUE;
909 			break;
910 		case 'p':
911 			parents = B_TRUE;
912 			break;
913 		case 'b':
914 			bflag = B_TRUE;
915 			if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
916 				(void) fprintf(stderr, gettext("bad volume "
917 				    "block size '%s': %s\n"), optarg,
918 				    libzfs_error_description(g_zfs));
919 				goto error;
920 			}
921 
922 			if (nvlist_add_uint64(props,
923 			    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
924 			    intval) != 0)
925 				nomem();
926 			break;
927 		case 'n':
928 			dryrun = B_TRUE;
929 			break;
930 		case 'o':
931 			if (!parseprop(props, optarg))
932 				goto error;
933 			break;
934 		case 's':
935 			noreserve = B_TRUE;
936 			break;
937 		case 'v':
938 			verbose = B_TRUE;
939 			break;
940 		case ':':
941 			(void) fprintf(stderr, gettext("missing size "
942 			    "argument\n"));
943 			goto badusage;
944 		case '?':
945 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
946 			    optopt);
947 			goto badusage;
948 		}
949 	}
950 
951 	if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
952 		(void) fprintf(stderr, gettext("'-s' and '-b' can only be "
953 		    "used when creating a volume\n"));
954 		goto badusage;
955 	}
956 
957 	argc -= optind;
958 	argv += optind;
959 
960 	/* check number of arguments */
961 	if (argc == 0) {
962 		(void) fprintf(stderr, gettext("missing %s argument\n"),
963 		    zfs_type_to_name(type));
964 		goto badusage;
965 	}
966 	if (argc > 1) {
967 		(void) fprintf(stderr, gettext("too many arguments\n"));
968 		goto badusage;
969 	}
970 
971 	if (dryrun || (type == ZFS_TYPE_VOLUME && !noreserve)) {
972 		char msg[ZFS_MAX_DATASET_NAME_LEN * 2];
973 		char *p;
974 
975 		if ((p = strchr(argv[0], '/')) != NULL)
976 			*p = '\0';
977 		zpool_handle = zpool_open(g_zfs, argv[0]);
978 		if (p != NULL)
979 			*p = '/';
980 		if (zpool_handle == NULL)
981 			goto error;
982 
983 		(void) snprintf(msg, sizeof (msg),
984 		    dryrun ? gettext("cannot verify '%s'") :
985 		    gettext("cannot create '%s'"), argv[0]);
986 		if (props && (real_props = zfs_valid_proplist(g_zfs, type,
987 		    props, 0, NULL, zpool_handle, B_TRUE, msg)) == NULL) {
988 			zpool_close(zpool_handle);
989 			goto error;
990 		}
991 	}
992 
993 	if (type == ZFS_TYPE_VOLUME && !noreserve) {
994 		uint64_t spa_version;
995 		zfs_prop_t resv_prop;
996 		char *strval;
997 
998 		spa_version = zpool_get_prop_int(zpool_handle,
999 		    ZPOOL_PROP_VERSION, NULL);
1000 		if (spa_version >= SPA_VERSION_REFRESERVATION)
1001 			resv_prop = ZFS_PROP_REFRESERVATION;
1002 		else
1003 			resv_prop = ZFS_PROP_RESERVATION;
1004 
1005 		volsize = zvol_volsize_to_reservation(zpool_handle, volsize,
1006 		    real_props);
1007 
1008 		if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
1009 		    &strval) != 0) {
1010 			if (nvlist_add_uint64(props,
1011 			    zfs_prop_to_name(resv_prop), volsize) != 0) {
1012 				nvlist_free(props);
1013 				nomem();
1014 			}
1015 		}
1016 	}
1017 	if (zpool_handle != NULL) {
1018 		zpool_close(zpool_handle);
1019 		nvlist_free(real_props);
1020 	}
1021 
1022 	if (parents && zfs_name_valid(argv[0], type)) {
1023 		/*
1024 		 * Now create the ancestors of target dataset.  If the target
1025 		 * already exists and '-p' option was used we should not
1026 		 * complain.
1027 		 */
1028 		if (zfs_dataset_exists(g_zfs, argv[0], type)) {
1029 			ret = 0;
1030 			goto error;
1031 		}
1032 		if (verbose) {
1033 			(void) printf(parseable ? "create_ancestors\t%s\n" :
1034 			    dryrun ? "would create ancestors of %s\n" :
1035 			    "create ancestors of %s\n", argv[0]);
1036 		}
1037 		if (!dryrun) {
1038 			if (zfs_create_ancestors(g_zfs, argv[0]) != 0) {
1039 				goto error;
1040 			}
1041 		}
1042 	}
1043 
1044 	if (verbose) {
1045 		nvpair_t *nvp = NULL;
1046 		(void) printf(parseable ? "create\t%s\n" :
1047 		    dryrun ? "would create %s\n" : "create %s\n", argv[0]);
1048 		while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) {
1049 			uint64_t uval;
1050 			char *sval;
1051 
1052 			switch (nvpair_type(nvp)) {
1053 			case DATA_TYPE_UINT64:
1054 				VERIFY0(nvpair_value_uint64(nvp, &uval));
1055 				(void) printf(parseable ?
1056 				    "property\t%s\t%llu\n" : "\t%s=%llu\n",
1057 				    nvpair_name(nvp), (u_longlong_t)uval);
1058 				break;
1059 			case DATA_TYPE_STRING:
1060 				VERIFY0(nvpair_value_string(nvp, &sval));
1061 				(void) printf(parseable ?
1062 				    "property\t%s\t%s\n" : "\t%s=%s\n",
1063 				    nvpair_name(nvp), sval);
1064 				break;
1065 			default:
1066 				(void) fprintf(stderr, "property '%s' "
1067 				    "has illegal type %d\n",
1068 				    nvpair_name(nvp), nvpair_type(nvp));
1069 				abort();
1070 			}
1071 		}
1072 	}
1073 	if (dryrun) {
1074 		ret = 0;
1075 		goto error;
1076 	}
1077 
1078 	/* pass to libzfs */
1079 	if (zfs_create(g_zfs, argv[0], type, props) != 0)
1080 		goto error;
1081 
1082 	if (log_history) {
1083 		(void) zpool_log_history(g_zfs, history_str);
1084 		log_history = B_FALSE;
1085 	}
1086 
1087 	ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
1088 error:
1089 	nvlist_free(props);
1090 	return (ret);
1091 badusage:
1092 	nvlist_free(props);
1093 	usage(B_FALSE);
1094 	return (2);
1095 }
1096 
1097 /*
1098  * zfs destroy [-rRf] <fs, vol>
1099  * zfs destroy [-rRd] <snap>
1100  *
1101  *	-r	Recursively destroy all children
1102  *	-R	Recursively destroy all dependents, including clones
1103  *	-f	Force unmounting of any dependents
1104  *	-d	If we can't destroy now, mark for deferred destruction
1105  *
1106  * Destroys the given dataset.  By default, it will unmount any filesystems,
1107  * and refuse to destroy a dataset that has any dependents.  A dependent can
1108  * either be a child, or a clone of a child.
1109  */
1110 typedef struct destroy_cbdata {
1111 	boolean_t	cb_first;
1112 	boolean_t	cb_force;
1113 	boolean_t	cb_recurse;
1114 	boolean_t	cb_error;
1115 	boolean_t	cb_doclones;
1116 	zfs_handle_t	*cb_target;
1117 	boolean_t	cb_defer_destroy;
1118 	boolean_t	cb_verbose;
1119 	boolean_t	cb_parsable;
1120 	boolean_t	cb_dryrun;
1121 	nvlist_t	*cb_nvl;
1122 	nvlist_t	*cb_batchedsnaps;
1123 
1124 	/* first snap in contiguous run */
1125 	char		*cb_firstsnap;
1126 	/* previous snap in contiguous run */
1127 	char		*cb_prevsnap;
1128 	int64_t		cb_snapused;
1129 	char		*cb_snapspec;
1130 	char		*cb_bookmark;
1131 } destroy_cbdata_t;
1132 
1133 /*
1134  * Check for any dependents based on the '-r' or '-R' flags.
1135  */
1136 static int
destroy_check_dependent(zfs_handle_t * zhp,void * data)1137 destroy_check_dependent(zfs_handle_t *zhp, void *data)
1138 {
1139 	destroy_cbdata_t *cbp = data;
1140 	const char *tname = zfs_get_name(cbp->cb_target);
1141 	const char *name = zfs_get_name(zhp);
1142 
1143 	if (strncmp(tname, name, strlen(tname)) == 0 &&
1144 	    (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1145 		/*
1146 		 * This is a direct descendant, not a clone somewhere else in
1147 		 * the hierarchy.
1148 		 */
1149 		if (cbp->cb_recurse)
1150 			goto out;
1151 
1152 		if (cbp->cb_first) {
1153 			(void) fprintf(stderr, gettext("cannot destroy '%s': "
1154 			    "%s has children\n"),
1155 			    zfs_get_name(cbp->cb_target),
1156 			    zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1157 			(void) fprintf(stderr, gettext("use '-r' to destroy "
1158 			    "the following datasets:\n"));
1159 			cbp->cb_first = B_FALSE;
1160 			cbp->cb_error = B_TRUE;
1161 		}
1162 
1163 		(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1164 	} else {
1165 		/*
1166 		 * This is a clone.  We only want to report this if the '-r'
1167 		 * wasn't specified, or the target is a snapshot.
1168 		 */
1169 		if (!cbp->cb_recurse &&
1170 		    zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1171 			goto out;
1172 
1173 		if (cbp->cb_first) {
1174 			(void) fprintf(stderr, gettext("cannot destroy '%s': "
1175 			    "%s has dependent clones\n"),
1176 			    zfs_get_name(cbp->cb_target),
1177 			    zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1178 			(void) fprintf(stderr, gettext("use '-R' to destroy "
1179 			    "the following datasets:\n"));
1180 			cbp->cb_first = B_FALSE;
1181 			cbp->cb_error = B_TRUE;
1182 			cbp->cb_dryrun = B_TRUE;
1183 		}
1184 
1185 		(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1186 	}
1187 
1188 out:
1189 	zfs_close(zhp);
1190 	return (0);
1191 }
1192 
1193 static int
destroy_callback(zfs_handle_t * zhp,void * data)1194 destroy_callback(zfs_handle_t *zhp, void *data)
1195 {
1196 	destroy_cbdata_t *cb = data;
1197 	const char *name = zfs_get_name(zhp);
1198 
1199 	if (cb->cb_verbose) {
1200 		if (cb->cb_parsable) {
1201 			(void) printf("destroy\t%s\n", name);
1202 		} else if (cb->cb_dryrun) {
1203 			(void) printf(gettext("would destroy %s\n"),
1204 			    name);
1205 		} else {
1206 			(void) printf(gettext("will destroy %s\n"),
1207 			    name);
1208 		}
1209 	}
1210 
1211 	/*
1212 	 * Ignore pools (which we've already flagged as an error before getting
1213 	 * here).
1214 	 */
1215 	if (strchr(zfs_get_name(zhp), '/') == NULL &&
1216 	    zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1217 		zfs_close(zhp);
1218 		return (0);
1219 	}
1220 	if (cb->cb_dryrun) {
1221 		zfs_close(zhp);
1222 		return (0);
1223 	}
1224 
1225 	/*
1226 	 * We batch up all contiguous snapshots (even of different
1227 	 * filesystems) and destroy them with one ioctl.  We can't
1228 	 * simply do all snap deletions and then all fs deletions,
1229 	 * because we must delete a clone before its origin.
1230 	 */
1231 	if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1232 		fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1233 	} else {
1234 		int error = zfs_destroy_snaps_nvl(g_zfs,
1235 		    cb->cb_batchedsnaps, B_FALSE);
1236 		fnvlist_free(cb->cb_batchedsnaps);
1237 		cb->cb_batchedsnaps = fnvlist_alloc();
1238 
1239 		if (error != 0 ||
1240 		    zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1241 		    zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1242 			zfs_close(zhp);
1243 			return (-1);
1244 		}
1245 	}
1246 
1247 	zfs_close(zhp);
1248 	return (0);
1249 }
1250 
1251 static int
destroy_print_cb(zfs_handle_t * zhp,void * arg)1252 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1253 {
1254 	destroy_cbdata_t *cb = arg;
1255 	const char *name = zfs_get_name(zhp);
1256 	int err = 0;
1257 
1258 	if (nvlist_exists(cb->cb_nvl, name)) {
1259 		if (cb->cb_firstsnap == NULL)
1260 			cb->cb_firstsnap = strdup(name);
1261 		if (cb->cb_prevsnap != NULL)
1262 			free(cb->cb_prevsnap);
1263 		/* this snap continues the current range */
1264 		cb->cb_prevsnap = strdup(name);
1265 		if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1266 			nomem();
1267 		if (cb->cb_verbose) {
1268 			if (cb->cb_parsable) {
1269 				(void) printf("destroy\t%s\n", name);
1270 			} else if (cb->cb_dryrun) {
1271 				(void) printf(gettext("would destroy %s\n"),
1272 				    name);
1273 			} else {
1274 				(void) printf(gettext("will destroy %s\n"),
1275 				    name);
1276 			}
1277 		}
1278 	} else if (cb->cb_firstsnap != NULL) {
1279 		/* end of this range */
1280 		uint64_t used = 0;
1281 		err = lzc_snaprange_space(cb->cb_firstsnap,
1282 		    cb->cb_prevsnap, &used);
1283 		cb->cb_snapused += used;
1284 		free(cb->cb_firstsnap);
1285 		cb->cb_firstsnap = NULL;
1286 		free(cb->cb_prevsnap);
1287 		cb->cb_prevsnap = NULL;
1288 	}
1289 	zfs_close(zhp);
1290 	return (err);
1291 }
1292 
1293 static int
destroy_print_snapshots(zfs_handle_t * fs_zhp,destroy_cbdata_t * cb)1294 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1295 {
1296 	int err = 0;
1297 	assert(cb->cb_firstsnap == NULL);
1298 	assert(cb->cb_prevsnap == NULL);
1299 	err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1300 	if (cb->cb_firstsnap != NULL) {
1301 		uint64_t used = 0;
1302 		if (err == 0) {
1303 			err = lzc_snaprange_space(cb->cb_firstsnap,
1304 			    cb->cb_prevsnap, &used);
1305 		}
1306 		cb->cb_snapused += used;
1307 		free(cb->cb_firstsnap);
1308 		cb->cb_firstsnap = NULL;
1309 		free(cb->cb_prevsnap);
1310 		cb->cb_prevsnap = NULL;
1311 	}
1312 	return (err);
1313 }
1314 
1315 static int
snapshot_to_nvl_cb(zfs_handle_t * zhp,void * arg)1316 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1317 {
1318 	destroy_cbdata_t *cb = arg;
1319 	int err = 0;
1320 
1321 	/* Check for clones. */
1322 	if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1323 		cb->cb_target = zhp;
1324 		cb->cb_first = B_TRUE;
1325 		err = zfs_iter_dependents(zhp, B_TRUE,
1326 		    destroy_check_dependent, cb);
1327 	}
1328 
1329 	if (err == 0) {
1330 		if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1331 			nomem();
1332 	}
1333 	zfs_close(zhp);
1334 	return (err);
1335 }
1336 
1337 static int
gather_snapshots(zfs_handle_t * zhp,void * arg)1338 gather_snapshots(zfs_handle_t *zhp, void *arg)
1339 {
1340 	destroy_cbdata_t *cb = arg;
1341 	int err = 0;
1342 
1343 	err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1344 	if (err == ENOENT)
1345 		err = 0;
1346 	if (err != 0)
1347 		goto out;
1348 
1349 	if (cb->cb_verbose) {
1350 		err = destroy_print_snapshots(zhp, cb);
1351 		if (err != 0)
1352 			goto out;
1353 	}
1354 
1355 	if (cb->cb_recurse)
1356 		err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1357 
1358 out:
1359 	zfs_close(zhp);
1360 	return (err);
1361 }
1362 
1363 static int
destroy_clones(destroy_cbdata_t * cb)1364 destroy_clones(destroy_cbdata_t *cb)
1365 {
1366 	nvpair_t *pair;
1367 	for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1368 	    pair != NULL;
1369 	    pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1370 		zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1371 		    ZFS_TYPE_SNAPSHOT);
1372 		if (zhp != NULL) {
1373 			boolean_t defer = cb->cb_defer_destroy;
1374 			int err = 0;
1375 
1376 			/*
1377 			 * We can't defer destroy non-snapshots, so set it to
1378 			 * false while destroying the clones.
1379 			 */
1380 			cb->cb_defer_destroy = B_FALSE;
1381 			err = zfs_iter_dependents(zhp, B_FALSE,
1382 			    destroy_callback, cb);
1383 			cb->cb_defer_destroy = defer;
1384 			zfs_close(zhp);
1385 			if (err != 0)
1386 				return (err);
1387 		}
1388 	}
1389 	return (0);
1390 }
1391 
1392 static int
zfs_do_destroy(int argc,char ** argv)1393 zfs_do_destroy(int argc, char **argv)
1394 {
1395 	destroy_cbdata_t cb = { 0 };
1396 	int rv = 0;
1397 	int err = 0;
1398 	int c;
1399 	zfs_handle_t *zhp = NULL;
1400 	char *at, *pound;
1401 	zfs_type_t type = ZFS_TYPE_DATASET;
1402 
1403 	/* check options */
1404 	while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1405 		switch (c) {
1406 		case 'v':
1407 			cb.cb_verbose = B_TRUE;
1408 			break;
1409 		case 'p':
1410 			cb.cb_verbose = B_TRUE;
1411 			cb.cb_parsable = B_TRUE;
1412 			break;
1413 		case 'n':
1414 			cb.cb_dryrun = B_TRUE;
1415 			break;
1416 		case 'd':
1417 			cb.cb_defer_destroy = B_TRUE;
1418 			type = ZFS_TYPE_SNAPSHOT;
1419 			break;
1420 		case 'f':
1421 			cb.cb_force = B_TRUE;
1422 			break;
1423 		case 'r':
1424 			cb.cb_recurse = B_TRUE;
1425 			break;
1426 		case 'R':
1427 			cb.cb_recurse = B_TRUE;
1428 			cb.cb_doclones = B_TRUE;
1429 			break;
1430 		case '?':
1431 		default:
1432 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1433 			    optopt);
1434 			usage(B_FALSE);
1435 		}
1436 	}
1437 
1438 	argc -= optind;
1439 	argv += optind;
1440 
1441 	/* check number of arguments */
1442 	if (argc == 0) {
1443 		(void) fprintf(stderr, gettext("missing dataset argument\n"));
1444 		usage(B_FALSE);
1445 	}
1446 	if (argc > 1) {
1447 		(void) fprintf(stderr, gettext("too many arguments\n"));
1448 		usage(B_FALSE);
1449 	}
1450 
1451 	at = strchr(argv[0], '@');
1452 	pound = strchr(argv[0], '#');
1453 	if (at != NULL) {
1454 
1455 		/* Build the list of snaps to destroy in cb_nvl. */
1456 		cb.cb_nvl = fnvlist_alloc();
1457 
1458 		*at = '\0';
1459 		zhp = zfs_open(g_zfs, argv[0],
1460 		    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1461 		if (zhp == NULL)
1462 			return (1);
1463 
1464 		cb.cb_snapspec = at + 1;
1465 		if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1466 		    cb.cb_error) {
1467 			rv = 1;
1468 			goto out;
1469 		}
1470 
1471 		if (nvlist_empty(cb.cb_nvl)) {
1472 			(void) fprintf(stderr, gettext("could not find any "
1473 			    "snapshots to destroy; check snapshot names.\n"));
1474 			rv = 1;
1475 			goto out;
1476 		}
1477 
1478 		if (cb.cb_verbose) {
1479 			char buf[16];
1480 			zfs_nicebytes(cb.cb_snapused, buf, sizeof (buf));
1481 			if (cb.cb_parsable) {
1482 				(void) printf("reclaim\t%llu\n",
1483 				    cb.cb_snapused);
1484 			} else if (cb.cb_dryrun) {
1485 				(void) printf(gettext("would reclaim %s\n"),
1486 				    buf);
1487 			} else {
1488 				(void) printf(gettext("will reclaim %s\n"),
1489 				    buf);
1490 			}
1491 		}
1492 
1493 		if (!cb.cb_dryrun) {
1494 			if (cb.cb_doclones) {
1495 				cb.cb_batchedsnaps = fnvlist_alloc();
1496 				err = destroy_clones(&cb);
1497 				if (err == 0) {
1498 					err = zfs_destroy_snaps_nvl(g_zfs,
1499 					    cb.cb_batchedsnaps, B_FALSE);
1500 				}
1501 				if (err != 0) {
1502 					rv = 1;
1503 					goto out;
1504 				}
1505 			}
1506 			if (err == 0) {
1507 				err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1508 				    cb.cb_defer_destroy);
1509 			}
1510 		}
1511 
1512 		if (err != 0)
1513 			rv = 1;
1514 	} else if (pound != NULL) {
1515 		int err;
1516 		nvlist_t *nvl;
1517 
1518 		if (cb.cb_dryrun) {
1519 			(void) fprintf(stderr,
1520 			    "dryrun is not supported with bookmark\n");
1521 			return (-1);
1522 		}
1523 
1524 		if (cb.cb_defer_destroy) {
1525 			(void) fprintf(stderr,
1526 			    "defer destroy is not supported with bookmark\n");
1527 			return (-1);
1528 		}
1529 
1530 		if (cb.cb_recurse) {
1531 			(void) fprintf(stderr,
1532 			    "recursive is not supported with bookmark\n");
1533 			return (-1);
1534 		}
1535 
1536 		if (!zfs_bookmark_exists(argv[0])) {
1537 			(void) fprintf(stderr, gettext("bookmark '%s' "
1538 			    "does not exist.\n"), argv[0]);
1539 			return (1);
1540 		}
1541 
1542 		nvl = fnvlist_alloc();
1543 		fnvlist_add_boolean(nvl, argv[0]);
1544 
1545 		err = lzc_destroy_bookmarks(nvl, NULL);
1546 		if (err != 0) {
1547 			(void) zfs_standard_error(g_zfs, err,
1548 			    "cannot destroy bookmark");
1549 		}
1550 
1551 		nvlist_free(cb.cb_nvl);
1552 
1553 		return (err);
1554 	} else {
1555 		/* Open the given dataset */
1556 		if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1557 			return (1);
1558 
1559 		cb.cb_target = zhp;
1560 
1561 		/*
1562 		 * Perform an explicit check for pools before going any further.
1563 		 */
1564 		if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1565 		    zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1566 			(void) fprintf(stderr, gettext("cannot destroy '%s': "
1567 			    "operation does not apply to pools\n"),
1568 			    zfs_get_name(zhp));
1569 			(void) fprintf(stderr, gettext("use 'zfs destroy -r "
1570 			    "%s' to destroy all datasets in the pool\n"),
1571 			    zfs_get_name(zhp));
1572 			(void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1573 			    "to destroy the pool itself\n"), zfs_get_name(zhp));
1574 			rv = 1;
1575 			goto out;
1576 		}
1577 
1578 		/*
1579 		 * Check for any dependents and/or clones.
1580 		 */
1581 		cb.cb_first = B_TRUE;
1582 		if (!cb.cb_doclones &&
1583 		    zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1584 		    &cb) != 0) {
1585 			rv = 1;
1586 			goto out;
1587 		}
1588 
1589 		if (cb.cb_error) {
1590 			rv = 1;
1591 			goto out;
1592 		}
1593 
1594 		cb.cb_batchedsnaps = fnvlist_alloc();
1595 		if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1596 		    &cb) != 0) {
1597 			rv = 1;
1598 			goto out;
1599 		}
1600 
1601 		/*
1602 		 * Do the real thing.  The callback will close the
1603 		 * handle regardless of whether it succeeds or not.
1604 		 */
1605 		err = destroy_callback(zhp, &cb);
1606 		zhp = NULL;
1607 		if (err == 0) {
1608 			err = zfs_destroy_snaps_nvl(g_zfs,
1609 			    cb.cb_batchedsnaps, cb.cb_defer_destroy);
1610 		}
1611 		if (err != 0)
1612 			rv = 1;
1613 	}
1614 
1615 out:
1616 	fnvlist_free(cb.cb_batchedsnaps);
1617 	fnvlist_free(cb.cb_nvl);
1618 	if (zhp != NULL)
1619 		zfs_close(zhp);
1620 	return (rv);
1621 }
1622 
1623 static boolean_t
is_recvd_column(zprop_get_cbdata_t * cbp)1624 is_recvd_column(zprop_get_cbdata_t *cbp)
1625 {
1626 	int i;
1627 	zfs_get_column_t col;
1628 
1629 	for (i = 0; i < ZFS_GET_NCOLS &&
1630 	    (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1631 		if (col == GET_COL_RECVD)
1632 			return (B_TRUE);
1633 	return (B_FALSE);
1634 }
1635 
1636 /*
1637  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1638  *	< all | property[,property]... > < fs | snap | vol > ...
1639  *
1640  *	-r	recurse over any child datasets
1641  *	-H	scripted mode.  Headers are stripped, and fields are separated
1642  *		by tabs instead of spaces.
1643  *	-o	Set of fields to display.  One of "name,property,value,
1644  *		received,source". Default is "name,property,value,source".
1645  *		"all" is an alias for all five.
1646  *	-s	Set of sources to allow.  One of
1647  *		"local,default,inherited,received,temporary,none".  Default is
1648  *		all six.
1649  *	-p	Display values in parsable (literal) format.
1650  *
1651  *  Prints properties for the given datasets.  The user can control which
1652  *  columns to display as well as which property types to allow.
1653  */
1654 
1655 /*
1656  * Invoked to display the properties for a single dataset.
1657  */
1658 static int
get_callback(zfs_handle_t * zhp,void * data)1659 get_callback(zfs_handle_t *zhp, void *data)
1660 {
1661 	char buf[ZFS_MAXPROPLEN];
1662 	char rbuf[ZFS_MAXPROPLEN];
1663 	zprop_source_t sourcetype;
1664 	char source[ZFS_MAX_DATASET_NAME_LEN];
1665 	zprop_get_cbdata_t *cbp = data;
1666 	nvlist_t *user_props = zfs_get_user_props(zhp);
1667 	zprop_list_t *pl = cbp->cb_proplist;
1668 	nvlist_t *propval;
1669 	char *strval;
1670 	char *sourceval;
1671 	boolean_t received = is_recvd_column(cbp);
1672 
1673 	for (; pl != NULL; pl = pl->pl_next) {
1674 		char *recvdval = NULL;
1675 		/*
1676 		 * Skip the special fake placeholder.  This will also skip over
1677 		 * the name property when 'all' is specified.
1678 		 */
1679 		if (pl->pl_prop == ZFS_PROP_NAME &&
1680 		    pl == cbp->cb_proplist)
1681 			continue;
1682 
1683 		if (pl->pl_prop != ZPROP_INVAL) {
1684 			if (zfs_prop_get(zhp, pl->pl_prop, buf,
1685 			    sizeof (buf), &sourcetype, source,
1686 			    sizeof (source),
1687 			    cbp->cb_literal) != 0) {
1688 				if (pl->pl_all)
1689 					continue;
1690 				if (!zfs_prop_valid_for_type(pl->pl_prop,
1691 				    ZFS_TYPE_DATASET, B_FALSE)) {
1692 					(void) fprintf(stderr,
1693 					    gettext("No such property '%s'\n"),
1694 					    zfs_prop_to_name(pl->pl_prop));
1695 					continue;
1696 				}
1697 				sourcetype = ZPROP_SRC_NONE;
1698 				(void) strlcpy(buf, "-", sizeof (buf));
1699 			}
1700 
1701 			if (received && (zfs_prop_get_recvd(zhp,
1702 			    zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1703 			    cbp->cb_literal) == 0))
1704 				recvdval = rbuf;
1705 
1706 			zprop_print_one_property(zfs_get_name(zhp), cbp,
1707 			    zfs_prop_to_name(pl->pl_prop),
1708 			    buf, sourcetype, source, recvdval);
1709 		} else if (zfs_prop_userquota(pl->pl_user_prop)) {
1710 			sourcetype = ZPROP_SRC_LOCAL;
1711 
1712 			if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1713 			    buf, sizeof (buf), cbp->cb_literal) != 0) {
1714 				sourcetype = ZPROP_SRC_NONE;
1715 				(void) strlcpy(buf, "-", sizeof (buf));
1716 			}
1717 
1718 			zprop_print_one_property(zfs_get_name(zhp), cbp,
1719 			    pl->pl_user_prop, buf, sourcetype, source, NULL);
1720 		} else if (zfs_prop_written(pl->pl_user_prop)) {
1721 			sourcetype = ZPROP_SRC_LOCAL;
1722 
1723 			if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1724 			    buf, sizeof (buf), cbp->cb_literal) != 0) {
1725 				sourcetype = ZPROP_SRC_NONE;
1726 				(void) strlcpy(buf, "-", sizeof (buf));
1727 			}
1728 
1729 			zprop_print_one_property(zfs_get_name(zhp), cbp,
1730 			    pl->pl_user_prop, buf, sourcetype, source, NULL);
1731 		} else {
1732 			if (nvlist_lookup_nvlist(user_props,
1733 			    pl->pl_user_prop, &propval) != 0) {
1734 				if (pl->pl_all)
1735 					continue;
1736 				sourcetype = ZPROP_SRC_NONE;
1737 				strval = "-";
1738 			} else {
1739 				verify(nvlist_lookup_string(propval,
1740 				    ZPROP_VALUE, &strval) == 0);
1741 				verify(nvlist_lookup_string(propval,
1742 				    ZPROP_SOURCE, &sourceval) == 0);
1743 
1744 				if (strcmp(sourceval,
1745 				    zfs_get_name(zhp)) == 0) {
1746 					sourcetype = ZPROP_SRC_LOCAL;
1747 				} else if (strcmp(sourceval,
1748 				    ZPROP_SOURCE_VAL_RECVD) == 0) {
1749 					sourcetype = ZPROP_SRC_RECEIVED;
1750 				} else {
1751 					sourcetype = ZPROP_SRC_INHERITED;
1752 					(void) strlcpy(source,
1753 					    sourceval, sizeof (source));
1754 				}
1755 			}
1756 
1757 			if (received && (zfs_prop_get_recvd(zhp,
1758 			    pl->pl_user_prop, rbuf, sizeof (rbuf),
1759 			    cbp->cb_literal) == 0))
1760 				recvdval = rbuf;
1761 
1762 			zprop_print_one_property(zfs_get_name(zhp), cbp,
1763 			    pl->pl_user_prop, strval, sourcetype,
1764 			    source, recvdval);
1765 		}
1766 	}
1767 
1768 	return (0);
1769 }
1770 
1771 static int
zfs_do_get(int argc,char ** argv)1772 zfs_do_get(int argc, char **argv)
1773 {
1774 	zprop_get_cbdata_t cb = { 0 };
1775 	int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1776 	int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1777 	char *value, *fields;
1778 	int ret = 0;
1779 	int limit = 0;
1780 	zprop_list_t fake_name = { 0 };
1781 
1782 	/*
1783 	 * Set up default columns and sources.
1784 	 */
1785 	cb.cb_sources = ZPROP_SRC_ALL;
1786 	cb.cb_columns[0] = GET_COL_NAME;
1787 	cb.cb_columns[1] = GET_COL_PROPERTY;
1788 	cb.cb_columns[2] = GET_COL_VALUE;
1789 	cb.cb_columns[3] = GET_COL_SOURCE;
1790 	cb.cb_type = ZFS_TYPE_DATASET;
1791 
1792 	/* check options */
1793 	while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1794 		switch (c) {
1795 		case 'p':
1796 			cb.cb_literal = B_TRUE;
1797 			break;
1798 		case 'd':
1799 			limit = parse_depth(optarg, &flags);
1800 			break;
1801 		case 'r':
1802 			flags |= ZFS_ITER_RECURSE;
1803 			break;
1804 		case 'H':
1805 			cb.cb_scripted = B_TRUE;
1806 			break;
1807 		case ':':
1808 			(void) fprintf(stderr, gettext("missing argument for "
1809 			    "'%c' option\n"), optopt);
1810 			usage(B_FALSE);
1811 			break;
1812 		case 'o':
1813 			/*
1814 			 * Process the set of columns to display.  We zero out
1815 			 * the structure to give us a blank slate.
1816 			 */
1817 			bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1818 			i = 0;
1819 			while (*optarg != '\0') {
1820 				static char *col_subopts[] =
1821 				    { "name", "property", "value", "received",
1822 				    "source", "all", NULL };
1823 
1824 				if (i == ZFS_GET_NCOLS) {
1825 					(void) fprintf(stderr, gettext("too "
1826 					    "many fields given to -o "
1827 					    "option\n"));
1828 					usage(B_FALSE);
1829 				}
1830 
1831 				switch (getsubopt(&optarg, col_subopts,
1832 				    &value)) {
1833 				case 0:
1834 					cb.cb_columns[i++] = GET_COL_NAME;
1835 					break;
1836 				case 1:
1837 					cb.cb_columns[i++] = GET_COL_PROPERTY;
1838 					break;
1839 				case 2:
1840 					cb.cb_columns[i++] = GET_COL_VALUE;
1841 					break;
1842 				case 3:
1843 					cb.cb_columns[i++] = GET_COL_RECVD;
1844 					flags |= ZFS_ITER_RECVD_PROPS;
1845 					break;
1846 				case 4:
1847 					cb.cb_columns[i++] = GET_COL_SOURCE;
1848 					break;
1849 				case 5:
1850 					if (i > 0) {
1851 						(void) fprintf(stderr,
1852 						    gettext("\"all\" conflicts "
1853 						    "with specific fields "
1854 						    "given to -o option\n"));
1855 						usage(B_FALSE);
1856 					}
1857 					cb.cb_columns[0] = GET_COL_NAME;
1858 					cb.cb_columns[1] = GET_COL_PROPERTY;
1859 					cb.cb_columns[2] = GET_COL_VALUE;
1860 					cb.cb_columns[3] = GET_COL_RECVD;
1861 					cb.cb_columns[4] = GET_COL_SOURCE;
1862 					flags |= ZFS_ITER_RECVD_PROPS;
1863 					i = ZFS_GET_NCOLS;
1864 					break;
1865 				default:
1866 					(void) fprintf(stderr,
1867 					    gettext("invalid column name "
1868 					    "'%s'\n"), value);
1869 					usage(B_FALSE);
1870 				}
1871 			}
1872 			break;
1873 
1874 		case 's':
1875 			cb.cb_sources = 0;
1876 			while (*optarg != '\0') {
1877 				static char *source_subopts[] = {
1878 					"local", "default", "inherited",
1879 					"received", "temporary", "none",
1880 					NULL };
1881 
1882 				switch (getsubopt(&optarg, source_subopts,
1883 				    &value)) {
1884 				case 0:
1885 					cb.cb_sources |= ZPROP_SRC_LOCAL;
1886 					break;
1887 				case 1:
1888 					cb.cb_sources |= ZPROP_SRC_DEFAULT;
1889 					break;
1890 				case 2:
1891 					cb.cb_sources |= ZPROP_SRC_INHERITED;
1892 					break;
1893 				case 3:
1894 					cb.cb_sources |= ZPROP_SRC_RECEIVED;
1895 					break;
1896 				case 4:
1897 					cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1898 					break;
1899 				case 5:
1900 					cb.cb_sources |= ZPROP_SRC_NONE;
1901 					break;
1902 				default:
1903 					(void) fprintf(stderr,
1904 					    gettext("invalid source "
1905 					    "'%s'\n"), value);
1906 					usage(B_FALSE);
1907 				}
1908 			}
1909 			break;
1910 
1911 		case 't':
1912 			types = 0;
1913 			flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1914 			while (*optarg != '\0') {
1915 				static char *type_subopts[] = { "filesystem",
1916 				    "volume", "snapshot", "bookmark",
1917 				    "all", NULL };
1918 
1919 				switch (getsubopt(&optarg, type_subopts,
1920 				    &value)) {
1921 				case 0:
1922 					types |= ZFS_TYPE_FILESYSTEM;
1923 					break;
1924 				case 1:
1925 					types |= ZFS_TYPE_VOLUME;
1926 					break;
1927 				case 2:
1928 					types |= ZFS_TYPE_SNAPSHOT;
1929 					break;
1930 				case 3:
1931 					types |= ZFS_TYPE_BOOKMARK;
1932 					break;
1933 				case 4:
1934 					types = ZFS_TYPE_DATASET |
1935 					    ZFS_TYPE_BOOKMARK;
1936 					break;
1937 
1938 				default:
1939 					(void) fprintf(stderr,
1940 					    gettext("invalid type '%s'\n"),
1941 					    value);
1942 					usage(B_FALSE);
1943 				}
1944 			}
1945 			break;
1946 
1947 		case '?':
1948 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1949 			    optopt);
1950 			usage(B_FALSE);
1951 		}
1952 	}
1953 
1954 	argc -= optind;
1955 	argv += optind;
1956 
1957 	if (argc < 1) {
1958 		(void) fprintf(stderr, gettext("missing property "
1959 		    "argument\n"));
1960 		usage(B_FALSE);
1961 	}
1962 
1963 	fields = argv[0];
1964 
1965 	if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1966 	    != 0)
1967 		usage(B_FALSE);
1968 
1969 	argc--;
1970 	argv++;
1971 
1972 	/*
1973 	 * As part of zfs_expand_proplist(), we keep track of the maximum column
1974 	 * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1975 	 * need to know the maximum name length.  However, the user likely did
1976 	 * not specify 'name' as one of the properties to fetch, so we need to
1977 	 * make sure we always include at least this property for
1978 	 * print_get_headers() to work properly.
1979 	 */
1980 	if (cb.cb_proplist != NULL) {
1981 		fake_name.pl_prop = ZFS_PROP_NAME;
1982 		fake_name.pl_width = strlen(gettext("NAME"));
1983 		fake_name.pl_next = cb.cb_proplist;
1984 		cb.cb_proplist = &fake_name;
1985 	}
1986 
1987 	cb.cb_first = B_TRUE;
1988 
1989 	/* run for each object */
1990 	ret = zfs_for_each(argc, argv, flags, types, NULL,
1991 	    &cb.cb_proplist, limit, get_callback, &cb);
1992 
1993 	if (cb.cb_proplist == &fake_name)
1994 		zprop_free_list(fake_name.pl_next);
1995 	else
1996 		zprop_free_list(cb.cb_proplist);
1997 
1998 	return (ret);
1999 }
2000 
2001 /*
2002  * inherit [-rS] <property> <fs|vol> ...
2003  *
2004  *	-r	Recurse over all children
2005  *	-S	Revert to received value, if any
2006  *
2007  * For each dataset specified on the command line, inherit the given property
2008  * from its parent.  Inheriting a property at the pool level will cause it to
2009  * use the default value.  The '-r' flag will recurse over all children, and is
2010  * useful for setting a property on a hierarchy-wide basis, regardless of any
2011  * local modifications for each dataset.
2012  */
2013 
2014 typedef struct inherit_cbdata {
2015 	const char *cb_propname;
2016 	boolean_t cb_received;
2017 } inherit_cbdata_t;
2018 
2019 static int
inherit_recurse_cb(zfs_handle_t * zhp,void * data)2020 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
2021 {
2022 	inherit_cbdata_t *cb = data;
2023 	zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
2024 
2025 	/*
2026 	 * If we're doing it recursively, then ignore properties that
2027 	 * are not valid for this type of dataset.
2028 	 */
2029 	if (prop != ZPROP_INVAL &&
2030 	    !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
2031 		return (0);
2032 
2033 	return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
2034 }
2035 
2036 static int
inherit_cb(zfs_handle_t * zhp,void * data)2037 inherit_cb(zfs_handle_t *zhp, void *data)
2038 {
2039 	inherit_cbdata_t *cb = data;
2040 
2041 	return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
2042 }
2043 
2044 static int
zfs_do_inherit(int argc,char ** argv)2045 zfs_do_inherit(int argc, char **argv)
2046 {
2047 	int c;
2048 	zfs_prop_t prop;
2049 	inherit_cbdata_t cb = { 0 };
2050 	char *propname;
2051 	int ret = 0;
2052 	int flags = 0;
2053 	boolean_t received = B_FALSE;
2054 
2055 	/* check options */
2056 	while ((c = getopt(argc, argv, "rS")) != -1) {
2057 		switch (c) {
2058 		case 'r':
2059 			flags |= ZFS_ITER_RECURSE;
2060 			break;
2061 		case 'S':
2062 			received = B_TRUE;
2063 			break;
2064 		case '?':
2065 		default:
2066 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2067 			    optopt);
2068 			usage(B_FALSE);
2069 		}
2070 	}
2071 
2072 	argc -= optind;
2073 	argv += optind;
2074 
2075 	/* check number of arguments */
2076 	if (argc < 1) {
2077 		(void) fprintf(stderr, gettext("missing property argument\n"));
2078 		usage(B_FALSE);
2079 	}
2080 	if (argc < 2) {
2081 		(void) fprintf(stderr, gettext("missing dataset argument\n"));
2082 		usage(B_FALSE);
2083 	}
2084 
2085 	propname = argv[0];
2086 	argc--;
2087 	argv++;
2088 
2089 	if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
2090 		if (zfs_prop_readonly(prop)) {
2091 			(void) fprintf(stderr, gettext(
2092 			    "%s property is read-only\n"),
2093 			    propname);
2094 			return (1);
2095 		}
2096 		if (!zfs_prop_inheritable(prop) && !received) {
2097 			(void) fprintf(stderr, gettext("'%s' property cannot "
2098 			    "be inherited\n"), propname);
2099 			if (prop == ZFS_PROP_QUOTA ||
2100 			    prop == ZFS_PROP_RESERVATION ||
2101 			    prop == ZFS_PROP_REFQUOTA ||
2102 			    prop == ZFS_PROP_REFRESERVATION) {
2103 				(void) fprintf(stderr, gettext("use 'zfs set "
2104 				    "%s=none' to clear\n"), propname);
2105 				(void) fprintf(stderr, gettext("use 'zfs "
2106 				    "inherit -S %s' to revert to received "
2107 				    "value\n"), propname);
2108 			}
2109 			return (1);
2110 		}
2111 		if (received && (prop == ZFS_PROP_VOLSIZE ||
2112 		    prop == ZFS_PROP_VERSION)) {
2113 			(void) fprintf(stderr, gettext("'%s' property cannot "
2114 			    "be reverted to a received value\n"), propname);
2115 			return (1);
2116 		}
2117 	} else if (!zfs_prop_user(propname)) {
2118 		(void) fprintf(stderr, gettext("invalid property '%s'\n"),
2119 		    propname);
2120 		usage(B_FALSE);
2121 	}
2122 
2123 	cb.cb_propname = propname;
2124 	cb.cb_received = received;
2125 
2126 	if (flags & ZFS_ITER_RECURSE) {
2127 		ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2128 		    NULL, NULL, 0, inherit_recurse_cb, &cb);
2129 	} else {
2130 		ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2131 		    NULL, NULL, 0, inherit_cb, &cb);
2132 	}
2133 
2134 	return (ret);
2135 }
2136 
2137 typedef struct upgrade_cbdata {
2138 	uint64_t cb_numupgraded;
2139 	uint64_t cb_numsamegraded;
2140 	uint64_t cb_numfailed;
2141 	uint64_t cb_version;
2142 	boolean_t cb_newer;
2143 	boolean_t cb_foundone;
2144 	char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2145 } upgrade_cbdata_t;
2146 
2147 static int
same_pool(zfs_handle_t * zhp,const char * name)2148 same_pool(zfs_handle_t *zhp, const char *name)
2149 {
2150 	int len1 = strcspn(name, "/@");
2151 	const char *zhname = zfs_get_name(zhp);
2152 	int len2 = strcspn(zhname, "/@");
2153 
2154 	if (len1 != len2)
2155 		return (B_FALSE);
2156 	return (strncmp(name, zhname, len1) == 0);
2157 }
2158 
2159 static int
upgrade_list_callback(zfs_handle_t * zhp,void * data)2160 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2161 {
2162 	upgrade_cbdata_t *cb = data;
2163 	int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2164 
2165 	/* list if it's old/new */
2166 	if ((!cb->cb_newer && version < ZPL_VERSION) ||
2167 	    (cb->cb_newer && version > ZPL_VERSION)) {
2168 		char *str;
2169 		if (cb->cb_newer) {
2170 			str = gettext("The following filesystems are "
2171 			    "formatted using a newer software version and\n"
2172 			    "cannot be accessed on the current system.\n\n");
2173 		} else {
2174 			str = gettext("The following filesystems are "
2175 			    "out of date, and can be upgraded.  After being\n"
2176 			    "upgraded, these filesystems (and any 'zfs send' "
2177 			    "streams generated from\n"
2178 			    "subsequent snapshots) will no longer be "
2179 			    "accessible by older software versions.\n\n");
2180 		}
2181 
2182 		if (!cb->cb_foundone) {
2183 			(void) puts(str);
2184 			(void) printf(gettext("VER  FILESYSTEM\n"));
2185 			(void) printf(gettext("---  ------------\n"));
2186 			cb->cb_foundone = B_TRUE;
2187 		}
2188 
2189 		(void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2190 	}
2191 
2192 	return (0);
2193 }
2194 
2195 static int
upgrade_set_callback(zfs_handle_t * zhp,void * data)2196 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2197 {
2198 	upgrade_cbdata_t *cb = data;
2199 	int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2200 	int needed_spa_version;
2201 	int spa_version;
2202 
2203 	if (zfs_spa_version(zhp, &spa_version) < 0)
2204 		return (-1);
2205 
2206 	needed_spa_version = zfs_spa_version_map(cb->cb_version);
2207 
2208 	if (needed_spa_version < 0)
2209 		return (-1);
2210 
2211 	if (spa_version < needed_spa_version) {
2212 		/* can't upgrade */
2213 		(void) printf(gettext("%s: can not be "
2214 		    "upgraded; the pool version needs to first "
2215 		    "be upgraded\nto version %d\n\n"),
2216 		    zfs_get_name(zhp), needed_spa_version);
2217 		cb->cb_numfailed++;
2218 		return (0);
2219 	}
2220 
2221 	/* upgrade */
2222 	if (version < cb->cb_version) {
2223 		char verstr[16];
2224 		(void) snprintf(verstr, sizeof (verstr),
2225 		    "%llu", cb->cb_version);
2226 		if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2227 			/*
2228 			 * If they did "zfs upgrade -a", then we could
2229 			 * be doing ioctls to different pools.  We need
2230 			 * to log this history once to each pool, and bypass
2231 			 * the normal history logging that happens in main().
2232 			 */
2233 			(void) zpool_log_history(g_zfs, history_str);
2234 			log_history = B_FALSE;
2235 		}
2236 		if (zfs_prop_set(zhp, "version", verstr) == 0)
2237 			cb->cb_numupgraded++;
2238 		else
2239 			cb->cb_numfailed++;
2240 		(void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2241 	} else if (version > cb->cb_version) {
2242 		/* can't downgrade */
2243 		(void) printf(gettext("%s: can not be downgraded; "
2244 		    "it is already at version %u\n"),
2245 		    zfs_get_name(zhp), version);
2246 		cb->cb_numfailed++;
2247 	} else {
2248 		cb->cb_numsamegraded++;
2249 	}
2250 	return (0);
2251 }
2252 
2253 /*
2254  * zfs upgrade
2255  * zfs upgrade -v
2256  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2257  */
2258 static int
zfs_do_upgrade(int argc,char ** argv)2259 zfs_do_upgrade(int argc, char **argv)
2260 {
2261 	boolean_t all = B_FALSE;
2262 	boolean_t showversions = B_FALSE;
2263 	int ret = 0;
2264 	upgrade_cbdata_t cb = { 0 };
2265 	int c;
2266 	int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2267 
2268 	/* check options */
2269 	while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2270 		switch (c) {
2271 		case 'r':
2272 			flags |= ZFS_ITER_RECURSE;
2273 			break;
2274 		case 'v':
2275 			showversions = B_TRUE;
2276 			break;
2277 		case 'V':
2278 			if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2279 			    optarg, &cb.cb_version) != 0) {
2280 				(void) fprintf(stderr,
2281 				    gettext("invalid version %s\n"), optarg);
2282 				usage(B_FALSE);
2283 			}
2284 			break;
2285 		case 'a':
2286 			all = B_TRUE;
2287 			break;
2288 		case '?':
2289 		default:
2290 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2291 			    optopt);
2292 			usage(B_FALSE);
2293 		}
2294 	}
2295 
2296 	argc -= optind;
2297 	argv += optind;
2298 
2299 	if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2300 		usage(B_FALSE);
2301 	if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2302 	    cb.cb_version || argc))
2303 		usage(B_FALSE);
2304 	if ((all || argc) && (showversions))
2305 		usage(B_FALSE);
2306 	if (all && argc)
2307 		usage(B_FALSE);
2308 
2309 	if (showversions) {
2310 		/* Show info on available versions. */
2311 		(void) printf(gettext("The following filesystem versions are "
2312 		    "supported:\n\n"));
2313 		(void) printf(gettext("VER  DESCRIPTION\n"));
2314 		(void) printf("---  -----------------------------------------"
2315 		    "---------------\n");
2316 		(void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2317 		(void) printf(gettext(" 2   Enhanced directory entries\n"));
2318 		(void) printf(gettext(" 3   Case insensitive and filesystem "
2319 		    "user identifier (FUID)\n"));
2320 		(void) printf(gettext(" 4   userquota, groupquota "
2321 		    "properties\n"));
2322 		(void) printf(gettext(" 5   System attributes\n"));
2323 		(void) printf(gettext("\nFor more information on a particular "
2324 		    "version, including supported releases,\n"));
2325 		(void) printf("see the ZFS Administration Guide.\n\n");
2326 		ret = 0;
2327 	} else if (argc || all) {
2328 		/* Upgrade filesystems */
2329 		if (cb.cb_version == 0)
2330 			cb.cb_version = ZPL_VERSION;
2331 		ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2332 		    NULL, NULL, 0, upgrade_set_callback, &cb);
2333 		(void) printf(gettext("%llu filesystems upgraded\n"),
2334 		    cb.cb_numupgraded);
2335 		if (cb.cb_numsamegraded) {
2336 			(void) printf(gettext("%llu filesystems already at "
2337 			    "this version\n"),
2338 			    cb.cb_numsamegraded);
2339 		}
2340 		if (cb.cb_numfailed != 0)
2341 			ret = 1;
2342 	} else {
2343 		/* List old-version filesystems */
2344 		boolean_t found;
2345 		(void) printf(gettext("This system is currently running "
2346 		    "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2347 
2348 		flags |= ZFS_ITER_RECURSE;
2349 		ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2350 		    NULL, NULL, 0, upgrade_list_callback, &cb);
2351 
2352 		found = cb.cb_foundone;
2353 		cb.cb_foundone = B_FALSE;
2354 		cb.cb_newer = B_TRUE;
2355 
2356 		ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2357 		    NULL, NULL, 0, upgrade_list_callback, &cb);
2358 
2359 		if (!cb.cb_foundone && !found) {
2360 			(void) printf(gettext("All filesystems are "
2361 			    "formatted with the current version.\n"));
2362 		}
2363 	}
2364 
2365 	return (ret);
2366 }
2367 
2368 /*
2369  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2370  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2371  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2372  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2373  * zfs projectspace [-Hp] [-o field[,...]] [-s field [-s field]...]
2374  *                [-S field [-S field]...] filesystem | snapshot
2375  *
2376  *	-H      Scripted mode; elide headers and separate columns by tabs.
2377  *	-i	Translate SID to POSIX ID.
2378  *	-n	Print numeric ID instead of user/group name.
2379  *	-o      Control which fields to display.
2380  *	-p	Use exact (parsable) numeric output.
2381  *	-s      Specify sort columns, descending order.
2382  *	-S      Specify sort columns, ascending order.
2383  *	-t      Control which object types to display.
2384  *
2385  *	Displays space consumed by, and quotas on, each user in the specified
2386  *	filesystem or snapshot.
2387  */
2388 
2389 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2390 enum us_field_types {
2391 	USFIELD_TYPE,
2392 	USFIELD_NAME,
2393 	USFIELD_USED,
2394 	USFIELD_QUOTA,
2395 	USFIELD_OBJUSED,
2396 	USFIELD_OBJQUOTA
2397 };
2398 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
2399 				    "OBJUSED", "OBJQUOTA" };
2400 static char *us_field_names[] = { "type", "name", "used", "quota",
2401 				    "objused", "objquota" };
2402 #define	USFIELD_LAST	(sizeof (us_field_names) / sizeof (char *))
2403 
2404 #define	USTYPE_PSX_GRP	(1 << 0)
2405 #define	USTYPE_PSX_USR	(1 << 1)
2406 #define	USTYPE_SMB_GRP	(1 << 2)
2407 #define	USTYPE_SMB_USR	(1 << 3)
2408 #define	USTYPE_PROJ	(1 << 4)
2409 #define	USTYPE_ALL	\
2410 	(USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR | \
2411 	    USTYPE_PROJ)
2412 
2413 static int us_type_bits[] = {
2414 	USTYPE_PSX_GRP,
2415 	USTYPE_PSX_USR,
2416 	USTYPE_SMB_GRP,
2417 	USTYPE_SMB_USR,
2418 	USTYPE_ALL
2419 };
2420 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2421 	"smbuser", "all" };
2422 
2423 typedef struct us_node {
2424 	nvlist_t	*usn_nvl;
2425 	uu_avl_node_t	usn_avlnode;
2426 	uu_list_node_t	usn_listnode;
2427 } us_node_t;
2428 
2429 typedef struct us_cbdata {
2430 	nvlist_t	**cb_nvlp;
2431 	uu_avl_pool_t	*cb_avl_pool;
2432 	uu_avl_t	*cb_avl;
2433 	boolean_t	cb_numname;
2434 	boolean_t	cb_nicenum;
2435 	boolean_t	cb_sid2posix;
2436 	zfs_userquota_prop_t cb_prop;
2437 	zfs_sort_column_t *cb_sortcol;
2438 	size_t		cb_width[USFIELD_LAST];
2439 } us_cbdata_t;
2440 
2441 static boolean_t us_populated = B_FALSE;
2442 
2443 typedef struct {
2444 	zfs_sort_column_t *si_sortcol;
2445 	boolean_t	si_numname;
2446 } us_sort_info_t;
2447 
2448 static int
us_field_index(char * field)2449 us_field_index(char *field)
2450 {
2451 	int i;
2452 
2453 	for (i = 0; i < USFIELD_LAST; i++) {
2454 		if (strcmp(field, us_field_names[i]) == 0)
2455 			return (i);
2456 	}
2457 
2458 	return (-1);
2459 }
2460 
2461 static int
us_compare(const void * larg,const void * rarg,void * unused)2462 us_compare(const void *larg, const void *rarg, void *unused)
2463 {
2464 	const us_node_t *l = larg;
2465 	const us_node_t *r = rarg;
2466 	us_sort_info_t *si = (us_sort_info_t *)unused;
2467 	zfs_sort_column_t *sortcol = si->si_sortcol;
2468 	boolean_t numname = si->si_numname;
2469 	nvlist_t *lnvl = l->usn_nvl;
2470 	nvlist_t *rnvl = r->usn_nvl;
2471 	int rc = 0;
2472 	boolean_t lvb, rvb;
2473 
2474 	for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2475 		char *lvstr = "";
2476 		char *rvstr = "";
2477 		uint32_t lv32 = 0;
2478 		uint32_t rv32 = 0;
2479 		uint64_t lv64 = 0;
2480 		uint64_t rv64 = 0;
2481 		zfs_prop_t prop = sortcol->sc_prop;
2482 		const char *propname = NULL;
2483 		boolean_t reverse = sortcol->sc_reverse;
2484 
2485 		switch (prop) {
2486 		case ZFS_PROP_TYPE:
2487 			propname = "type";
2488 			(void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2489 			(void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2490 			if (rv32 != lv32)
2491 				rc = (rv32 < lv32) ? 1 : -1;
2492 			break;
2493 		case ZFS_PROP_NAME:
2494 			propname = "name";
2495 			if (numname) {
2496 				(void) nvlist_lookup_uint64(lnvl, propname,
2497 				    &lv64);
2498 				(void) nvlist_lookup_uint64(rnvl, propname,
2499 				    &rv64);
2500 				if (rv64 != lv64)
2501 					rc = (rv64 < lv64) ? 1 : -1;
2502 			} else {
2503 				(void) nvlist_lookup_string(lnvl, propname,
2504 				    &lvstr);
2505 				(void) nvlist_lookup_string(rnvl, propname,
2506 				    &rvstr);
2507 				rc = strcmp(lvstr, rvstr);
2508 			}
2509 			break;
2510 		case ZFS_PROP_USED:
2511 		case ZFS_PROP_QUOTA:
2512 			if (!us_populated)
2513 				break;
2514 			if (prop == ZFS_PROP_USED)
2515 				propname = "used";
2516 			else
2517 				propname = "quota";
2518 			(void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2519 			(void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2520 			if (rv64 != lv64)
2521 				rc = (rv64 < lv64) ? 1 : -1;
2522 			break;
2523 
2524 		default:
2525 			break;
2526 		}
2527 
2528 		if (rc != 0) {
2529 			if (rc < 0)
2530 				return (reverse ? 1 : -1);
2531 			else
2532 				return (reverse ? -1 : 1);
2533 		}
2534 	}
2535 
2536 	/*
2537 	 * If entries still seem to be the same, check if they are of the same
2538 	 * type (smbentity is added only if we are doing SID to POSIX ID
2539 	 * translation where we can have duplicate type/name combinations).
2540 	 */
2541 	if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2542 	    nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2543 	    lvb != rvb)
2544 		return (lvb < rvb ? -1 : 1);
2545 
2546 	return (0);
2547 }
2548 
2549 static boolean_t
zfs_prop_is_user(unsigned p)2550 zfs_prop_is_user(unsigned p)
2551 {
2552 	return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
2553 	    p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
2554 }
2555 
2556 static boolean_t
zfs_prop_is_group(unsigned p)2557 zfs_prop_is_group(unsigned p)
2558 {
2559 	return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
2560 	    p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
2561 }
2562 
2563 static boolean_t
zfs_prop_is_project(unsigned p)2564 zfs_prop_is_project(unsigned p)
2565 {
2566 	return (p == ZFS_PROP_PROJECTUSED || p == ZFS_PROP_PROJECTQUOTA ||
2567 	    p == ZFS_PROP_PROJECTOBJUSED || p == ZFS_PROP_PROJECTOBJQUOTA);
2568 }
2569 
2570 static inline const char *
us_type2str(unsigned field_type)2571 us_type2str(unsigned field_type)
2572 {
2573 	switch (field_type) {
2574 	case USTYPE_PSX_USR:
2575 		return ("POSIX User");
2576 	case USTYPE_PSX_GRP:
2577 		return ("POSIX Group");
2578 	case USTYPE_SMB_USR:
2579 		return ("SMB User");
2580 	case USTYPE_SMB_GRP:
2581 		return ("SMB Group");
2582 	case USTYPE_PROJ:
2583 		return ("Project");
2584 	default:
2585 		return ("Undefined");
2586 	}
2587 }
2588 
2589 static int
userspace_cb(void * arg,const char * domain,uid_t rid,uint64_t space)2590 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2591 {
2592 	us_cbdata_t *cb = (us_cbdata_t *)arg;
2593 	zfs_userquota_prop_t prop = cb->cb_prop;
2594 	char *name = NULL;
2595 	char *propname;
2596 	char sizebuf[32];
2597 	us_node_t *node;
2598 	uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2599 	uu_avl_t *avl = cb->cb_avl;
2600 	uu_avl_index_t idx;
2601 	nvlist_t *props;
2602 	us_node_t *n;
2603 	zfs_sort_column_t *sortcol = cb->cb_sortcol;
2604 	unsigned type = 0;
2605 	const char *typestr;
2606 	size_t namelen;
2607 	size_t typelen;
2608 	size_t sizelen;
2609 	int typeidx, nameidx, sizeidx;
2610 	us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2611 	boolean_t smbentity = B_FALSE;
2612 
2613 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2614 		nomem();
2615 	node = safe_malloc(sizeof (us_node_t));
2616 	uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2617 	node->usn_nvl = props;
2618 
2619 	if (domain != NULL && domain[0] != '\0') {
2620 		/* SMB */
2621 		char sid[MAXNAMELEN + 32];
2622 		uid_t id;
2623 		int err;
2624 		int flag = IDMAP_REQ_FLG_USE_CACHE;
2625 
2626 		smbentity = B_TRUE;
2627 
2628 		(void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2629 
2630 		if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2631 			type = USTYPE_SMB_GRP;
2632 			err = sid_to_id(sid, B_FALSE, &id);
2633 		} else {
2634 			type = USTYPE_SMB_USR;
2635 			err = sid_to_id(sid, B_TRUE, &id);
2636 		}
2637 
2638 		if (err == 0) {
2639 			rid = id;
2640 			if (!cb->cb_sid2posix) {
2641 				if (type == USTYPE_SMB_USR) {
2642 					(void) idmap_getwinnamebyuid(rid, flag,
2643 					    &name, NULL);
2644 				} else {
2645 					(void) idmap_getwinnamebygid(rid, flag,
2646 					    &name, NULL);
2647 				}
2648 				if (name == NULL)
2649 					name = sid;
2650 			}
2651 		}
2652 	}
2653 
2654 	if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2655 		/* POSIX or -i */
2656 		if (zfs_prop_is_group(prop)) {
2657 			type = USTYPE_PSX_GRP;
2658 			if (!cb->cb_numname) {
2659 				struct group *g;
2660 
2661 				if ((g = getgrgid(rid)) != NULL)
2662 					name = g->gr_name;
2663 			}
2664 		} else if (zfs_prop_is_user(prop)) {
2665 			type = USTYPE_PSX_USR;
2666 			if (!cb->cb_numname) {
2667 				struct passwd *p;
2668 
2669 				if ((p = getpwuid(rid)) != NULL)
2670 					name = p->pw_name;
2671 			}
2672 		} else {
2673 			type = USTYPE_PROJ;
2674 		}
2675 	}
2676 
2677 	/*
2678 	 * Make sure that the type/name combination is unique when doing
2679 	 * SID to POSIX ID translation (hence changing the type from SMB to
2680 	 * POSIX).
2681 	 */
2682 	if (cb->cb_sid2posix &&
2683 	    nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2684 		nomem();
2685 
2686 	/* Calculate/update width of TYPE field */
2687 	typestr = us_type2str(type);
2688 	typelen = strlen(gettext(typestr));
2689 	typeidx = us_field_index("type");
2690 	if (typelen > cb->cb_width[typeidx])
2691 		cb->cb_width[typeidx] = typelen;
2692 	if (nvlist_add_uint32(props, "type", type) != 0)
2693 		nomem();
2694 
2695 	/* Calculate/update width of NAME field */
2696 	if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2697 		if (nvlist_add_uint64(props, "name", rid) != 0)
2698 			nomem();
2699 		namelen = snprintf(NULL, 0, "%u", rid);
2700 	} else {
2701 		if (nvlist_add_string(props, "name", name) != 0)
2702 			nomem();
2703 		namelen = strlen(name);
2704 	}
2705 	nameidx = us_field_index("name");
2706 	if (namelen > cb->cb_width[nameidx])
2707 		cb->cb_width[nameidx] = namelen;
2708 
2709 	/*
2710 	 * Check if this type/name combination is in the list and update it;
2711 	 * otherwise add new node to the list.
2712 	 */
2713 	if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2714 		uu_avl_insert(avl, node, idx);
2715 	} else {
2716 		nvlist_free(props);
2717 		free(node);
2718 		node = n;
2719 		props = node->usn_nvl;
2720 	}
2721 
2722 	/* Calculate/update width of USED/QUOTA fields */
2723 	if (cb->cb_nicenum) {
2724 		if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2725 		    prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2726 		    prop == ZFS_PROP_PROJECTUSED ||
2727 		    prop == ZFS_PROP_PROJECTQUOTA) {
2728 			zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
2729 		} else {
2730 			zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2731 		}
2732 	} else {
2733 		(void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2734 	}
2735 	sizelen = strlen(sizebuf);
2736 	if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2737 	    prop == ZFS_PROP_PROJECTUSED) {
2738 		propname = "used";
2739 		if (!nvlist_exists(props, "quota"))
2740 			(void) nvlist_add_uint64(props, "quota", 0);
2741 	} else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2742 	    prop == ZFS_PROP_PROJECTQUOTA) {
2743 		propname = "quota";
2744 		if (!nvlist_exists(props, "used"))
2745 			(void) nvlist_add_uint64(props, "used", 0);
2746 	} else if (prop == ZFS_PROP_USEROBJUSED ||
2747 	    prop == ZFS_PROP_GROUPOBJUSED || prop == ZFS_PROP_PROJECTOBJUSED) {
2748 		propname = "objused";
2749 		if (!nvlist_exists(props, "objquota"))
2750 			(void) nvlist_add_uint64(props, "objquota", 0);
2751 	} else if (prop == ZFS_PROP_USEROBJQUOTA ||
2752 	    prop == ZFS_PROP_GROUPOBJQUOTA ||
2753 	    prop == ZFS_PROP_PROJECTOBJQUOTA) {
2754 		propname = "objquota";
2755 		if (!nvlist_exists(props, "objused"))
2756 			(void) nvlist_add_uint64(props, "objused", 0);
2757 	} else {
2758 		return (-1);
2759 	}
2760 	sizeidx = us_field_index(propname);
2761 	if (sizelen > cb->cb_width[sizeidx])
2762 		cb->cb_width[sizeidx] = sizelen;
2763 
2764 	if (nvlist_add_uint64(props, propname, space) != 0)
2765 		nomem();
2766 
2767 	return (0);
2768 }
2769 
2770 static void
print_us_node(boolean_t scripted,boolean_t parsable,int * fields,int types,size_t * width,us_node_t * node)2771 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2772     size_t *width, us_node_t *node)
2773 {
2774 	nvlist_t *nvl = node->usn_nvl;
2775 	char valstr[MAXNAMELEN];
2776 	boolean_t first = B_TRUE;
2777 	int cfield = 0;
2778 	int field;
2779 	uint32_t ustype;
2780 
2781 	/* Check type */
2782 	(void) nvlist_lookup_uint32(nvl, "type", &ustype);
2783 	if (!(ustype & types))
2784 		return;
2785 
2786 	while ((field = fields[cfield]) != USFIELD_LAST) {
2787 		nvpair_t *nvp = NULL;
2788 		data_type_t type;
2789 		uint32_t val32;
2790 		uint64_t val64;
2791 		char *strval = "-";
2792 
2793 		while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2794 			if (strcmp(nvpair_name(nvp),
2795 			    us_field_names[field]) == 0)
2796 				break;
2797 		}
2798 
2799 		type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
2800 		switch (type) {
2801 		case DATA_TYPE_UINT32:
2802 			(void) nvpair_value_uint32(nvp, &val32);
2803 			break;
2804 		case DATA_TYPE_UINT64:
2805 			(void) nvpair_value_uint64(nvp, &val64);
2806 			break;
2807 		case DATA_TYPE_STRING:
2808 			(void) nvpair_value_string(nvp, &strval);
2809 			break;
2810 		case DATA_TYPE_UNKNOWN:
2811 			break;
2812 		default:
2813 			(void) fprintf(stderr, "invalid data type\n");
2814 		}
2815 
2816 		switch (field) {
2817 		case USFIELD_TYPE:
2818 			if (type == DATA_TYPE_UINT32)
2819 				strval = (char *)us_type2str(val32);
2820 			break;
2821 		case USFIELD_NAME:
2822 			if (type == DATA_TYPE_UINT64) {
2823 				(void) sprintf(valstr, "%llu", val64);
2824 				strval = valstr;
2825 			}
2826 			break;
2827 		case USFIELD_USED:
2828 		case USFIELD_QUOTA:
2829 			if (type == DATA_TYPE_UINT64) {
2830 				if (parsable) {
2831 					(void) sprintf(valstr, "%llu", val64);
2832 					strval = valstr;
2833 				} else if (field == USFIELD_QUOTA &&
2834 				    val64 == 0) {
2835 					strval = "none";
2836 				} else {
2837 					zfs_nicebytes(val64, valstr,
2838 					    sizeof (valstr));
2839 					strval = valstr;
2840 				}
2841 			}
2842 			break;
2843 		case USFIELD_OBJUSED:
2844 		case USFIELD_OBJQUOTA:
2845 			if (type == DATA_TYPE_UINT64) {
2846 				if (parsable) {
2847 					(void) sprintf(valstr, "%llu", val64);
2848 					strval = valstr;
2849 				} else if (field == USFIELD_OBJQUOTA &&
2850 				    val64 == 0) {
2851 					strval = "none";
2852 				} else {
2853 					zfs_nicenum(val64, valstr,
2854 					    sizeof (valstr));
2855 					strval = valstr;
2856 				}
2857 			}
2858 			break;
2859 		}
2860 
2861 		if (!first) {
2862 			if (scripted)
2863 				(void) printf("\t");
2864 			else
2865 				(void) printf("  ");
2866 		}
2867 		if (scripted)
2868 			(void) printf("%s", strval);
2869 		else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2870 			(void) printf("%-*s", width[field], strval);
2871 		else
2872 			(void) printf("%*s", width[field], strval);
2873 
2874 		first = B_FALSE;
2875 		cfield++;
2876 	}
2877 
2878 	(void) printf("\n");
2879 }
2880 
2881 static void
print_us(boolean_t scripted,boolean_t parsable,int * fields,int types,size_t * width,boolean_t rmnode,uu_avl_t * avl)2882 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2883     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2884 {
2885 	us_node_t *node;
2886 	const char *col;
2887 	int cfield = 0;
2888 	int field;
2889 
2890 	if (!scripted) {
2891 		boolean_t first = B_TRUE;
2892 
2893 		while ((field = fields[cfield]) != USFIELD_LAST) {
2894 			col = gettext(us_field_hdr[field]);
2895 			if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2896 				(void) printf(first ? "%-*s" : "  %-*s",
2897 				    width[field], col);
2898 			} else {
2899 				(void) printf(first ? "%*s" : "  %*s",
2900 				    width[field], col);
2901 			}
2902 			first = B_FALSE;
2903 			cfield++;
2904 		}
2905 		(void) printf("\n");
2906 	}
2907 
2908 	for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2909 		print_us_node(scripted, parsable, fields, types, width, node);
2910 		if (rmnode)
2911 			nvlist_free(node->usn_nvl);
2912 	}
2913 }
2914 
2915 static int
zfs_do_userspace(int argc,char ** argv)2916 zfs_do_userspace(int argc, char **argv)
2917 {
2918 	zfs_handle_t *zhp;
2919 	zfs_userquota_prop_t p;
2920 	uu_avl_pool_t *avl_pool;
2921 	uu_avl_t *avl_tree;
2922 	uu_avl_walk_t *walk;
2923 	char *delim;
2924 	char deffields[] = "type,name,used,quota,objused,objquota";
2925 	char *ofield = NULL;
2926 	char *tfield = NULL;
2927 	int cfield = 0;
2928 	int fields[256];
2929 	int i;
2930 	boolean_t scripted = B_FALSE;
2931 	boolean_t prtnum = B_FALSE;
2932 	boolean_t parsable = B_FALSE;
2933 	boolean_t sid2posix = B_FALSE;
2934 	int ret = 0;
2935 	int c;
2936 	zfs_sort_column_t *sortcol = NULL;
2937 	int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2938 	us_cbdata_t cb;
2939 	us_node_t *node;
2940 	us_node_t *rmnode;
2941 	uu_list_pool_t *listpool;
2942 	uu_list_t *list;
2943 	uu_avl_index_t idx = 0;
2944 	uu_list_index_t idx2 = 0;
2945 
2946 	if (argc < 2)
2947 		usage(B_FALSE);
2948 
2949 	if (strcmp(argv[0], "groupspace") == 0) {
2950 		/* Toggle default group types */
2951 		types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2952 	} else if (strcmp(argv[0], "projectspace") == 0) {
2953 		types = USTYPE_PROJ;
2954 		prtnum = B_TRUE;
2955 	}
2956 
2957 	while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2958 		switch (c) {
2959 		case 'n':
2960 			if (types == USTYPE_PROJ) {
2961 				(void) fprintf(stderr,
2962 				    gettext("invalid option 'n'\n"));
2963 				usage(B_FALSE);
2964 			}
2965 			prtnum = B_TRUE;
2966 			break;
2967 		case 'H':
2968 			scripted = B_TRUE;
2969 			break;
2970 		case 'p':
2971 			parsable = B_TRUE;
2972 			break;
2973 		case 'o':
2974 			ofield = optarg;
2975 			break;
2976 		case 's':
2977 		case 'S':
2978 			if (zfs_add_sort_column(&sortcol, optarg,
2979 			    c == 's' ? B_FALSE : B_TRUE) != 0) {
2980 				(void) fprintf(stderr,
2981 				    gettext("invalid field '%s'\n"), optarg);
2982 				usage(B_FALSE);
2983 			}
2984 			break;
2985 		case 't':
2986 			if (types == USTYPE_PROJ) {
2987 				(void) fprintf(stderr,
2988 				    gettext("invalid option 't'\n"));
2989 				usage(B_FALSE);
2990 			}
2991 			tfield = optarg;
2992 			break;
2993 		case 'i':
2994 			if (types == USTYPE_PROJ) {
2995 				(void) fprintf(stderr,
2996 				    gettext("invalid option 'i'\n"));
2997 				usage(B_FALSE);
2998 			}
2999 			sid2posix = B_TRUE;
3000 			break;
3001 		case ':':
3002 			(void) fprintf(stderr, gettext("missing argument for "
3003 			    "'%c' option\n"), optopt);
3004 			usage(B_FALSE);
3005 			break;
3006 		case '?':
3007 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3008 			    optopt);
3009 			usage(B_FALSE);
3010 		}
3011 	}
3012 
3013 	argc -= optind;
3014 	argv += optind;
3015 
3016 	if (argc < 1) {
3017 		(void) fprintf(stderr, gettext("missing dataset name\n"));
3018 		usage(B_FALSE);
3019 	}
3020 	if (argc > 1) {
3021 		(void) fprintf(stderr, gettext("too many arguments\n"));
3022 		usage(B_FALSE);
3023 	}
3024 
3025 	/* Use default output fields if not specified using -o */
3026 	if (ofield == NULL)
3027 		ofield = deffields;
3028 	do {
3029 		if ((delim = strchr(ofield, ',')) != NULL)
3030 			*delim = '\0';
3031 		if ((fields[cfield++] = us_field_index(ofield)) == -1) {
3032 			(void) fprintf(stderr, gettext("invalid type '%s' "
3033 			    "for -o option\n"), ofield);
3034 			return (-1);
3035 		}
3036 		if (delim != NULL)
3037 			ofield = delim + 1;
3038 	} while (delim != NULL);
3039 	fields[cfield] = USFIELD_LAST;
3040 
3041 	/* Override output types (-t option) */
3042 	if (tfield != NULL) {
3043 		types = 0;
3044 
3045 		do {
3046 			boolean_t found = B_FALSE;
3047 
3048 			if ((delim = strchr(tfield, ',')) != NULL)
3049 				*delim = '\0';
3050 			for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
3051 			    i++) {
3052 				if (strcmp(tfield, us_type_names[i]) == 0) {
3053 					found = B_TRUE;
3054 					types |= us_type_bits[i];
3055 					break;
3056 				}
3057 			}
3058 			if (!found) {
3059 				(void) fprintf(stderr, gettext("invalid type "
3060 				    "'%s' for -t option\n"), tfield);
3061 				return (-1);
3062 			}
3063 			if (delim != NULL)
3064 				tfield = delim + 1;
3065 		} while (delim != NULL);
3066 	}
3067 
3068 	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
3069 		return (1);
3070 
3071 	if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
3072 	    offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
3073 		nomem();
3074 	if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
3075 		nomem();
3076 
3077 	/* Always add default sorting columns */
3078 	(void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
3079 	(void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
3080 
3081 	cb.cb_sortcol = sortcol;
3082 	cb.cb_numname = prtnum;
3083 	cb.cb_nicenum = !parsable;
3084 	cb.cb_avl_pool = avl_pool;
3085 	cb.cb_avl = avl_tree;
3086 	cb.cb_sid2posix = sid2posix;
3087 
3088 	for (i = 0; i < USFIELD_LAST; i++)
3089 		cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
3090 
3091 	for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
3092 		if ((zfs_prop_is_user(p) &&
3093 		    !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
3094 		    (zfs_prop_is_group(p) &&
3095 		    !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))) ||
3096 		    (zfs_prop_is_project(p) && types != USTYPE_PROJ))
3097 			continue;
3098 
3099 		cb.cb_prop = p;
3100 		if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
3101 			return (ret);
3102 	}
3103 
3104 	/* Sort the list */
3105 	if ((node = uu_avl_first(avl_tree)) == NULL)
3106 		return (0);
3107 
3108 	us_populated = B_TRUE;
3109 
3110 	listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
3111 	    offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
3112 	list = uu_list_create(listpool, NULL, UU_DEFAULT);
3113 	uu_list_node_init(node, &node->usn_listnode, listpool);
3114 
3115 	while (node != NULL) {
3116 		rmnode = node;
3117 		node = uu_avl_next(avl_tree, node);
3118 		uu_avl_remove(avl_tree, rmnode);
3119 		if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
3120 			uu_list_insert(list, rmnode, idx2);
3121 	}
3122 
3123 	for (node = uu_list_first(list); node != NULL;
3124 	    node = uu_list_next(list, node)) {
3125 		us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
3126 
3127 		if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
3128 			uu_avl_insert(avl_tree, node, idx);
3129 	}
3130 
3131 	uu_list_destroy(list);
3132 	uu_list_pool_destroy(listpool);
3133 
3134 	/* Print and free node nvlist memory */
3135 	print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
3136 	    cb.cb_avl);
3137 
3138 	zfs_free_sort_columns(sortcol);
3139 
3140 	/* Clean up the AVL tree */
3141 	if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
3142 		nomem();
3143 
3144 	while ((node = uu_avl_walk_next(walk)) != NULL) {
3145 		uu_avl_remove(cb.cb_avl, node);
3146 		free(node);
3147 	}
3148 
3149 	uu_avl_walk_end(walk);
3150 	uu_avl_destroy(avl_tree);
3151 	uu_avl_pool_destroy(avl_pool);
3152 
3153 	return (ret);
3154 }
3155 
3156 /*
3157  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
3158  *      [-t type[,...]] [filesystem|volume|snapshot] ...
3159  *
3160  *	-H	Scripted mode; elide headers and separate columns by tabs.
3161  *	-p	Display values in parsable (literal) format.
3162  *	-r	Recurse over all children.
3163  *	-d	Limit recursion by depth.
3164  *	-o	Control which fields to display.
3165  *	-s	Specify sort columns, descending order.
3166  *	-S	Specify sort columns, ascending order.
3167  *	-t	Control which object types to display.
3168  *
3169  * When given no arguments, list all filesystems in the system.
3170  * Otherwise, list the specified datasets, optionally recursing down them if
3171  * '-r' is specified.
3172  */
3173 typedef struct list_cbdata {
3174 	boolean_t	cb_first;
3175 	boolean_t	cb_literal;
3176 	boolean_t	cb_scripted;
3177 	zprop_list_t	*cb_proplist;
3178 } list_cbdata_t;
3179 
3180 /*
3181  * Given a list of columns to display, output appropriate headers for each one.
3182  */
3183 static void
print_header(list_cbdata_t * cb)3184 print_header(list_cbdata_t *cb)
3185 {
3186 	zprop_list_t *pl = cb->cb_proplist;
3187 	char headerbuf[ZFS_MAXPROPLEN];
3188 	const char *header;
3189 	int i;
3190 	boolean_t first = B_TRUE;
3191 	boolean_t right_justify;
3192 
3193 	for (; pl != NULL; pl = pl->pl_next) {
3194 		if (!first) {
3195 			(void) printf("  ");
3196 		} else {
3197 			first = B_FALSE;
3198 		}
3199 
3200 		right_justify = B_FALSE;
3201 		if (pl->pl_prop != ZPROP_INVAL) {
3202 			header = zfs_prop_column_name(pl->pl_prop);
3203 			right_justify = zfs_prop_align_right(pl->pl_prop);
3204 		} else {
3205 			for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
3206 				headerbuf[i] = toupper(pl->pl_user_prop[i]);
3207 			headerbuf[i] = '\0';
3208 			header = headerbuf;
3209 		}
3210 
3211 		if (pl->pl_next == NULL && !right_justify)
3212 			(void) printf("%s", header);
3213 		else if (right_justify)
3214 			(void) printf("%*s", pl->pl_width, header);
3215 		else
3216 			(void) printf("%-*s", pl->pl_width, header);
3217 	}
3218 
3219 	(void) printf("\n");
3220 }
3221 
3222 /*
3223  * Given a dataset and a list of fields, print out all the properties according
3224  * to the described layout.
3225  */
3226 static void
print_dataset(zfs_handle_t * zhp,list_cbdata_t * cb)3227 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3228 {
3229 	zprop_list_t *pl = cb->cb_proplist;
3230 	boolean_t first = B_TRUE;
3231 	char property[ZFS_MAXPROPLEN];
3232 	nvlist_t *userprops = zfs_get_user_props(zhp);
3233 	nvlist_t *propval;
3234 	char *propstr;
3235 	boolean_t right_justify;
3236 
3237 	for (; pl != NULL; pl = pl->pl_next) {
3238 		if (!first) {
3239 			if (cb->cb_scripted)
3240 				(void) printf("\t");
3241 			else
3242 				(void) printf("  ");
3243 		} else {
3244 			first = B_FALSE;
3245 		}
3246 
3247 		if (pl->pl_prop == ZFS_PROP_NAME) {
3248 			(void) strlcpy(property, zfs_get_name(zhp),
3249 			    sizeof (property));
3250 			propstr = property;
3251 			right_justify = zfs_prop_align_right(pl->pl_prop);
3252 		} else if (pl->pl_prop != ZPROP_INVAL) {
3253 			if (zfs_prop_get(zhp, pl->pl_prop, property,
3254 			    sizeof (property), NULL, NULL, 0,
3255 			    cb->cb_literal) != 0)
3256 				propstr = "-";
3257 			else
3258 				propstr = property;
3259 			right_justify = zfs_prop_align_right(pl->pl_prop);
3260 		} else if (zfs_prop_userquota(pl->pl_user_prop)) {
3261 			if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3262 			    property, sizeof (property), cb->cb_literal) != 0)
3263 				propstr = "-";
3264 			else
3265 				propstr = property;
3266 			right_justify = B_TRUE;
3267 		} else if (zfs_prop_written(pl->pl_user_prop)) {
3268 			if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3269 			    property, sizeof (property), cb->cb_literal) != 0)
3270 				propstr = "-";
3271 			else
3272 				propstr = property;
3273 			right_justify = B_TRUE;
3274 		} else {
3275 			if (nvlist_lookup_nvlist(userprops,
3276 			    pl->pl_user_prop, &propval) != 0)
3277 				propstr = "-";
3278 			else
3279 				verify(nvlist_lookup_string(propval,
3280 				    ZPROP_VALUE, &propstr) == 0);
3281 			right_justify = B_FALSE;
3282 		}
3283 
3284 		/*
3285 		 * If this is being called in scripted mode, or if this is the
3286 		 * last column and it is left-justified, don't include a width
3287 		 * format specifier.
3288 		 */
3289 		if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3290 			(void) printf("%s", propstr);
3291 		else if (right_justify)
3292 			(void) printf("%*s", pl->pl_width, propstr);
3293 		else
3294 			(void) printf("%-*s", pl->pl_width, propstr);
3295 	}
3296 
3297 	(void) printf("\n");
3298 }
3299 
3300 /*
3301  * Generic callback function to list a dataset or snapshot.
3302  */
3303 static int
list_callback(zfs_handle_t * zhp,void * data)3304 list_callback(zfs_handle_t *zhp, void *data)
3305 {
3306 	list_cbdata_t *cbp = data;
3307 
3308 	if (cbp->cb_first) {
3309 		if (!cbp->cb_scripted)
3310 			print_header(cbp);
3311 		cbp->cb_first = B_FALSE;
3312 	}
3313 
3314 	print_dataset(zhp, cbp);
3315 
3316 	return (0);
3317 }
3318 
3319 static int
zfs_do_list(int argc,char ** argv)3320 zfs_do_list(int argc, char **argv)
3321 {
3322 	int c;
3323 	static char default_fields[] =
3324 	    "name,used,available,referenced,mountpoint";
3325 	int types = ZFS_TYPE_DATASET;
3326 	boolean_t types_specified = B_FALSE;
3327 	char *fields = NULL;
3328 	list_cbdata_t cb = { 0 };
3329 	char *value;
3330 	int limit = 0;
3331 	int ret = 0;
3332 	zfs_sort_column_t *sortcol = NULL;
3333 	int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3334 
3335 	/* check options */
3336 	while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3337 		switch (c) {
3338 		case 'o':
3339 			fields = optarg;
3340 			break;
3341 		case 'p':
3342 			cb.cb_literal = B_TRUE;
3343 			flags |= ZFS_ITER_LITERAL_PROPS;
3344 			break;
3345 		case 'd':
3346 			limit = parse_depth(optarg, &flags);
3347 			break;
3348 		case 'r':
3349 			flags |= ZFS_ITER_RECURSE;
3350 			break;
3351 		case 'H':
3352 			cb.cb_scripted = B_TRUE;
3353 			break;
3354 		case 's':
3355 			if (zfs_add_sort_column(&sortcol, optarg,
3356 			    B_FALSE) != 0) {
3357 				(void) fprintf(stderr,
3358 				    gettext("invalid property '%s'\n"), optarg);
3359 				usage(B_FALSE);
3360 			}
3361 			break;
3362 		case 'S':
3363 			if (zfs_add_sort_column(&sortcol, optarg,
3364 			    B_TRUE) != 0) {
3365 				(void) fprintf(stderr,
3366 				    gettext("invalid property '%s'\n"), optarg);
3367 				usage(B_FALSE);
3368 			}
3369 			break;
3370 		case 't':
3371 			types = 0;
3372 			types_specified = B_TRUE;
3373 			flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3374 			while (*optarg != '\0') {
3375 				static char *type_subopts[] = { "filesystem",
3376 				    "volume", "snapshot", "snap", "bookmark",
3377 				    "all", NULL };
3378 
3379 				switch (getsubopt(&optarg, type_subopts,
3380 				    &value)) {
3381 				case 0:
3382 					types |= ZFS_TYPE_FILESYSTEM;
3383 					break;
3384 				case 1:
3385 					types |= ZFS_TYPE_VOLUME;
3386 					break;
3387 				case 2:
3388 				case 3:
3389 					types |= ZFS_TYPE_SNAPSHOT;
3390 					break;
3391 				case 4:
3392 					types |= ZFS_TYPE_BOOKMARK;
3393 					break;
3394 				case 5:
3395 					types = ZFS_TYPE_DATASET |
3396 					    ZFS_TYPE_BOOKMARK;
3397 					break;
3398 				default:
3399 					(void) fprintf(stderr,
3400 					    gettext("invalid type '%s'\n"),
3401 					    value);
3402 					usage(B_FALSE);
3403 				}
3404 			}
3405 			break;
3406 		case ':':
3407 			(void) fprintf(stderr, gettext("missing argument for "
3408 			    "'%c' option\n"), optopt);
3409 			usage(B_FALSE);
3410 			break;
3411 		case '?':
3412 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3413 			    optopt);
3414 			usage(B_FALSE);
3415 		}
3416 	}
3417 
3418 	argc -= optind;
3419 	argv += optind;
3420 
3421 	if (fields == NULL)
3422 		fields = default_fields;
3423 
3424 	/*
3425 	 * If we are only going to list snapshot names and sort by name,
3426 	 * then we can use faster version.
3427 	 */
3428 	if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3429 		flags |= ZFS_ITER_SIMPLE;
3430 
3431 	/*
3432 	 * If "-o space" and no types were specified, don't display snapshots.
3433 	 */
3434 	if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3435 		types &= ~ZFS_TYPE_SNAPSHOT;
3436 
3437 	/*
3438 	 * If the user specifies '-o all', the zprop_get_list() doesn't
3439 	 * normally include the name of the dataset.  For 'zfs list', we always
3440 	 * want this property to be first.
3441 	 */
3442 	if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3443 	    != 0)
3444 		usage(B_FALSE);
3445 
3446 	cb.cb_first = B_TRUE;
3447 
3448 	ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3449 	    limit, list_callback, &cb);
3450 
3451 	zprop_free_list(cb.cb_proplist);
3452 	zfs_free_sort_columns(sortcol);
3453 
3454 	if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3455 		(void) printf(gettext("no datasets available\n"));
3456 
3457 	return (ret);
3458 }
3459 
3460 /*
3461  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3462  * zfs rename [-f] -p <fs | vol> <fs | vol>
3463  * zfs rename -r <snap> <snap>
3464  *
3465  * Renames the given dataset to another of the same type.
3466  *
3467  * The '-p' flag creates all the non-existing ancestors of the target first.
3468  */
3469 /* ARGSUSED */
3470 static int
zfs_do_rename(int argc,char ** argv)3471 zfs_do_rename(int argc, char **argv)
3472 {
3473 	zfs_handle_t *zhp;
3474 	int c;
3475 	int ret = 0;
3476 	boolean_t recurse = B_FALSE;
3477 	boolean_t parents = B_FALSE;
3478 	boolean_t force_unmount = B_FALSE;
3479 
3480 	/* check options */
3481 	while ((c = getopt(argc, argv, "prf")) != -1) {
3482 		switch (c) {
3483 		case 'p':
3484 			parents = B_TRUE;
3485 			break;
3486 		case 'r':
3487 			recurse = B_TRUE;
3488 			break;
3489 		case 'f':
3490 			force_unmount = B_TRUE;
3491 			break;
3492 		case '?':
3493 		default:
3494 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3495 			    optopt);
3496 			usage(B_FALSE);
3497 		}
3498 	}
3499 
3500 	argc -= optind;
3501 	argv += optind;
3502 
3503 	/* check number of arguments */
3504 	if (argc < 1) {
3505 		(void) fprintf(stderr, gettext("missing source dataset "
3506 		    "argument\n"));
3507 		usage(B_FALSE);
3508 	}
3509 	if (argc < 2) {
3510 		(void) fprintf(stderr, gettext("missing target dataset "
3511 		    "argument\n"));
3512 		usage(B_FALSE);
3513 	}
3514 	if (argc > 2) {
3515 		(void) fprintf(stderr, gettext("too many arguments\n"));
3516 		usage(B_FALSE);
3517 	}
3518 
3519 	if (recurse && parents) {
3520 		(void) fprintf(stderr, gettext("-p and -r options are mutually "
3521 		    "exclusive\n"));
3522 		usage(B_FALSE);
3523 	}
3524 
3525 	if (recurse && strchr(argv[0], '@') == 0) {
3526 		(void) fprintf(stderr, gettext("source dataset for recursive "
3527 		    "rename must be a snapshot\n"));
3528 		usage(B_FALSE);
3529 	}
3530 
3531 	if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3532 	    ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3533 		return (1);
3534 
3535 	/* If we were asked and the name looks good, try to create ancestors. */
3536 	if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3537 	    zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3538 		zfs_close(zhp);
3539 		return (1);
3540 	}
3541 
3542 	ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3543 
3544 	zfs_close(zhp);
3545 	return (ret);
3546 }
3547 
3548 /*
3549  * zfs promote <fs>
3550  *
3551  * Promotes the given clone fs to be the parent
3552  */
3553 /* ARGSUSED */
3554 static int
zfs_do_promote(int argc,char ** argv)3555 zfs_do_promote(int argc, char **argv)
3556 {
3557 	zfs_handle_t *zhp;
3558 	int ret = 0;
3559 
3560 	/* check options */
3561 	if (argc > 1 && argv[1][0] == '-') {
3562 		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3563 		    argv[1][1]);
3564 		usage(B_FALSE);
3565 	}
3566 
3567 	/* check number of arguments */
3568 	if (argc < 2) {
3569 		(void) fprintf(stderr, gettext("missing clone filesystem"
3570 		    " argument\n"));
3571 		usage(B_FALSE);
3572 	}
3573 	if (argc > 2) {
3574 		(void) fprintf(stderr, gettext("too many arguments\n"));
3575 		usage(B_FALSE);
3576 	}
3577 
3578 	zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3579 	if (zhp == NULL)
3580 		return (1);
3581 
3582 	ret = (zfs_promote(zhp) != 0);
3583 
3584 
3585 	zfs_close(zhp);
3586 	return (ret);
3587 }
3588 
3589 /*
3590  * zfs rollback [-rRf] <snapshot>
3591  *
3592  *	-r	Delete any intervening snapshots before doing rollback
3593  *	-R	Delete any snapshots and their clones
3594  *	-f	ignored for backwards compatability
3595  *
3596  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3597  * since then and making it the active dataset.  If more recent snapshots exist,
3598  * the command will complain unless the '-r' flag is given.
3599  */
3600 typedef struct rollback_cbdata {
3601 	uint64_t	cb_create;
3602 	boolean_t	cb_first;
3603 	int		cb_doclones;
3604 	char		*cb_target;
3605 	int		cb_error;
3606 	boolean_t	cb_recurse;
3607 } rollback_cbdata_t;
3608 
3609 static int
rollback_check_dependent(zfs_handle_t * zhp,void * data)3610 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3611 {
3612 	rollback_cbdata_t *cbp = data;
3613 
3614 	if (cbp->cb_first && cbp->cb_recurse) {
3615 		(void) fprintf(stderr, gettext("cannot rollback to "
3616 		    "'%s': clones of previous snapshots exist\n"),
3617 		    cbp->cb_target);
3618 		(void) fprintf(stderr, gettext("use '-R' to "
3619 		    "force deletion of the following clones and "
3620 		    "dependents:\n"));
3621 		cbp->cb_first = 0;
3622 		cbp->cb_error = 1;
3623 	}
3624 
3625 	(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3626 
3627 	zfs_close(zhp);
3628 	return (0);
3629 }
3630 
3631 /*
3632  * Report any snapshots more recent than the one specified.  Used when '-r' is
3633  * not specified.  We reuse this same callback for the snapshot dependents - if
3634  * 'cb_dependent' is set, then this is a dependent and we should report it
3635  * without checking the transaction group.
3636  */
3637 static int
rollback_check(zfs_handle_t * zhp,void * data)3638 rollback_check(zfs_handle_t *zhp, void *data)
3639 {
3640 	rollback_cbdata_t *cbp = data;
3641 
3642 	if (cbp->cb_doclones) {
3643 		zfs_close(zhp);
3644 		return (0);
3645 	}
3646 
3647 	if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3648 		if (cbp->cb_first && !cbp->cb_recurse) {
3649 			(void) fprintf(stderr, gettext("cannot "
3650 			    "rollback to '%s': more recent snapshots "
3651 			    "or bookmarks exist\n"),
3652 			    cbp->cb_target);
3653 			(void) fprintf(stderr, gettext("use '-r' to "
3654 			    "force deletion of the following "
3655 			    "snapshots and bookmarks:\n"));
3656 			cbp->cb_first = 0;
3657 			cbp->cb_error = 1;
3658 		}
3659 
3660 		if (cbp->cb_recurse) {
3661 			if (zfs_iter_dependents(zhp, B_TRUE,
3662 			    rollback_check_dependent, cbp) != 0) {
3663 				zfs_close(zhp);
3664 				return (-1);
3665 			}
3666 		} else {
3667 			(void) fprintf(stderr, "%s\n",
3668 			    zfs_get_name(zhp));
3669 		}
3670 	}
3671 	zfs_close(zhp);
3672 	return (0);
3673 }
3674 
3675 static int
zfs_do_rollback(int argc,char ** argv)3676 zfs_do_rollback(int argc, char **argv)
3677 {
3678 	int ret = 0;
3679 	int c;
3680 	boolean_t force = B_FALSE;
3681 	rollback_cbdata_t cb = { 0 };
3682 	zfs_handle_t *zhp, *snap;
3683 	char parentname[ZFS_MAX_DATASET_NAME_LEN];
3684 	char *delim;
3685 
3686 	/* check options */
3687 	while ((c = getopt(argc, argv, "rRf")) != -1) {
3688 		switch (c) {
3689 		case 'r':
3690 			cb.cb_recurse = 1;
3691 			break;
3692 		case 'R':
3693 			cb.cb_recurse = 1;
3694 			cb.cb_doclones = 1;
3695 			break;
3696 		case 'f':
3697 			force = B_TRUE;
3698 			break;
3699 		case '?':
3700 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3701 			    optopt);
3702 			usage(B_FALSE);
3703 		}
3704 	}
3705 
3706 	argc -= optind;
3707 	argv += optind;
3708 
3709 	/* check number of arguments */
3710 	if (argc < 1) {
3711 		(void) fprintf(stderr, gettext("missing dataset argument\n"));
3712 		usage(B_FALSE);
3713 	}
3714 	if (argc > 1) {
3715 		(void) fprintf(stderr, gettext("too many arguments\n"));
3716 		usage(B_FALSE);
3717 	}
3718 
3719 	/* open the snapshot */
3720 	if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3721 		return (1);
3722 
3723 	/* open the parent dataset */
3724 	(void) strlcpy(parentname, argv[0], sizeof (parentname));
3725 	verify((delim = strrchr(parentname, '@')) != NULL);
3726 	*delim = '\0';
3727 	if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3728 		zfs_close(snap);
3729 		return (1);
3730 	}
3731 
3732 	/*
3733 	 * Check for more recent snapshots and/or clones based on the presence
3734 	 * of '-r' and '-R'.
3735 	 */
3736 	cb.cb_target = argv[0];
3737 	cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3738 	cb.cb_first = B_TRUE;
3739 	cb.cb_error = 0;
3740 	if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3741 		goto out;
3742 	if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3743 		goto out;
3744 
3745 	if ((ret = cb.cb_error) != 0)
3746 		goto out;
3747 
3748 	/*
3749 	 * Rollback parent to the given snapshot.
3750 	 */
3751 	ret = zfs_rollback(zhp, snap, force);
3752 
3753 out:
3754 	zfs_close(snap);
3755 	zfs_close(zhp);
3756 
3757 	if (ret == 0)
3758 		return (0);
3759 	else
3760 		return (1);
3761 }
3762 
3763 /*
3764  * zfs set property=value ... { fs | snap | vol } ...
3765  *
3766  * Sets the given properties for all datasets specified on the command line.
3767  */
3768 
3769 static int
set_callback(zfs_handle_t * zhp,void * data)3770 set_callback(zfs_handle_t *zhp, void *data)
3771 {
3772 	nvlist_t *props = data;
3773 
3774 	if (zfs_prop_set_list(zhp, props) != 0) {
3775 		switch (libzfs_errno(g_zfs)) {
3776 		case EZFS_MOUNTFAILED:
3777 			(void) fprintf(stderr, gettext("property may be set "
3778 			    "but unable to remount filesystem\n"));
3779 			break;
3780 		case EZFS_SHARENFSFAILED:
3781 			(void) fprintf(stderr, gettext("property may be set "
3782 			    "but unable to reshare filesystem\n"));
3783 			break;
3784 		}
3785 		return (1);
3786 	}
3787 	return (0);
3788 }
3789 
3790 static int
zfs_do_set(int argc,char ** argv)3791 zfs_do_set(int argc, char **argv)
3792 {
3793 	nvlist_t *props = NULL;
3794 	int ds_start = -1; /* argv idx of first dataset arg */
3795 	int ret = 0;
3796 
3797 	/* check for options */
3798 	if (argc > 1 && argv[1][0] == '-') {
3799 		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3800 		    argv[1][1]);
3801 		usage(B_FALSE);
3802 	}
3803 
3804 	/* check number of arguments */
3805 	if (argc < 2) {
3806 		(void) fprintf(stderr, gettext("missing arguments\n"));
3807 		usage(B_FALSE);
3808 	}
3809 	if (argc < 3) {
3810 		if (strchr(argv[1], '=') == NULL) {
3811 			(void) fprintf(stderr, gettext("missing property=value "
3812 			    "argument(s)\n"));
3813 		} else {
3814 			(void) fprintf(stderr, gettext("missing dataset "
3815 			    "name(s)\n"));
3816 		}
3817 		usage(B_FALSE);
3818 	}
3819 
3820 	/* validate argument order:  prop=val args followed by dataset args */
3821 	for (int i = 1; i < argc; i++) {
3822 		if (strchr(argv[i], '=') != NULL) {
3823 			if (ds_start > 0) {
3824 				/* out-of-order prop=val argument */
3825 				(void) fprintf(stderr, gettext("invalid "
3826 				    "argument order\n"), i);
3827 				usage(B_FALSE);
3828 			}
3829 		} else if (ds_start < 0) {
3830 			ds_start = i;
3831 		}
3832 	}
3833 	if (ds_start < 0) {
3834 		(void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3835 		usage(B_FALSE);
3836 	}
3837 
3838 	/* Populate a list of property settings */
3839 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3840 		nomem();
3841 	for (int i = 1; i < ds_start; i++) {
3842 		if (!parseprop(props, argv[i])) {
3843 			ret = -1;
3844 			goto error;
3845 		}
3846 	}
3847 
3848 	ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3849 	    ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3850 
3851 error:
3852 	nvlist_free(props);
3853 	return (ret);
3854 }
3855 
3856 typedef struct snap_cbdata {
3857 	nvlist_t *sd_nvl;
3858 	boolean_t sd_recursive;
3859 	const char *sd_snapname;
3860 } snap_cbdata_t;
3861 
3862 static int
zfs_snapshot_cb(zfs_handle_t * zhp,void * arg)3863 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3864 {
3865 	snap_cbdata_t *sd = arg;
3866 	char *name;
3867 	int rv = 0;
3868 	int error;
3869 
3870 	if (sd->sd_recursive &&
3871 	    zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3872 		zfs_close(zhp);
3873 		return (0);
3874 	}
3875 
3876 	error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3877 	if (error == -1)
3878 		nomem();
3879 	fnvlist_add_boolean(sd->sd_nvl, name);
3880 	free(name);
3881 
3882 	if (sd->sd_recursive)
3883 		rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3884 	zfs_close(zhp);
3885 	return (rv);
3886 }
3887 
3888 /*
3889  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3890  *
3891  * Creates a snapshot with the given name.  While functionally equivalent to
3892  * 'zfs create', it is a separate command to differentiate intent.
3893  */
3894 static int
zfs_do_snapshot(int argc,char ** argv)3895 zfs_do_snapshot(int argc, char **argv)
3896 {
3897 	int ret = 0;
3898 	int c;
3899 	nvlist_t *props;
3900 	snap_cbdata_t sd = { 0 };
3901 	boolean_t multiple_snaps = B_FALSE;
3902 
3903 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3904 		nomem();
3905 	if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3906 		nomem();
3907 
3908 	/* check options */
3909 	while ((c = getopt(argc, argv, "ro:")) != -1) {
3910 		switch (c) {
3911 		case 'o':
3912 			if (!parseprop(props, optarg)) {
3913 				nvlist_free(sd.sd_nvl);
3914 				nvlist_free(props);
3915 				return (1);
3916 			}
3917 			break;
3918 		case 'r':
3919 			sd.sd_recursive = B_TRUE;
3920 			multiple_snaps = B_TRUE;
3921 			break;
3922 		case '?':
3923 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3924 			    optopt);
3925 			goto usage;
3926 		}
3927 	}
3928 
3929 	argc -= optind;
3930 	argv += optind;
3931 
3932 	/* check number of arguments */
3933 	if (argc < 1) {
3934 		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
3935 		goto usage;
3936 	}
3937 
3938 	if (argc > 1)
3939 		multiple_snaps = B_TRUE;
3940 	for (; argc > 0; argc--, argv++) {
3941 		char *atp;
3942 		zfs_handle_t *zhp;
3943 
3944 		atp = strchr(argv[0], '@');
3945 		if (atp == NULL)
3946 			goto usage;
3947 		*atp = '\0';
3948 		sd.sd_snapname = atp + 1;
3949 		zhp = zfs_open(g_zfs, argv[0],
3950 		    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3951 		if (zhp == NULL)
3952 			goto usage;
3953 		if (zfs_snapshot_cb(zhp, &sd) != 0)
3954 			goto usage;
3955 	}
3956 
3957 	ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3958 	nvlist_free(sd.sd_nvl);
3959 	nvlist_free(props);
3960 	if (ret != 0 && multiple_snaps)
3961 		(void) fprintf(stderr, gettext("no snapshots were created\n"));
3962 	return (ret != 0);
3963 
3964 usage:
3965 	nvlist_free(sd.sd_nvl);
3966 	nvlist_free(props);
3967 	usage(B_FALSE);
3968 	return (-1);
3969 }
3970 
3971 /*
3972  * Send a backup stream to stdout.
3973  */
3974 static int
zfs_do_send(int argc,char ** argv)3975 zfs_do_send(int argc, char **argv)
3976 {
3977 	char *fromname = NULL;
3978 	char *toname = NULL;
3979 	char *resume_token = NULL;
3980 	char *cp;
3981 	zfs_handle_t *zhp;
3982 	sendflags_t flags = { 0 };
3983 	int c, err;
3984 	nvlist_t *dbgnv = NULL;
3985 	boolean_t extraverbose = B_FALSE;
3986 
3987 	struct option long_options[] = {
3988 		{"replicate",	no_argument,		NULL, 'R'},
3989 		{"props",	no_argument,		NULL, 'p'},
3990 		{"parsable",	no_argument,		NULL, 'P'},
3991 		{"dedup",	no_argument,		NULL, 'D'},
3992 		{"verbose",	no_argument,		NULL, 'v'},
3993 		{"dryrun",	no_argument,		NULL, 'n'},
3994 		{"large-block",	no_argument,		NULL, 'L'},
3995 		{"embed",	no_argument,		NULL, 'e'},
3996 		{"resume",	required_argument,	NULL, 't'},
3997 		{"compressed",	no_argument,		NULL, 'c'},
3998 		{"raw",		no_argument,		NULL, 'w'},
3999 		{"backup",	no_argument,		NULL, 'b'},
4000 		{"holds",	no_argument,		NULL, 'h'},
4001 		{0, 0, 0, 0}
4002 	};
4003 
4004 	/* check options */
4005 	while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLeht:cwb", long_options,
4006 	    NULL)) != -1) {
4007 		switch (c) {
4008 		case 'i':
4009 			if (fromname)
4010 				usage(B_FALSE);
4011 			fromname = optarg;
4012 			break;
4013 		case 'I':
4014 			if (fromname)
4015 				usage(B_FALSE);
4016 			fromname = optarg;
4017 			flags.doall = B_TRUE;
4018 			break;
4019 		case 'R':
4020 			flags.replicate = B_TRUE;
4021 			break;
4022 		case 'p':
4023 			flags.props = B_TRUE;
4024 			break;
4025 		case 'b':
4026 			flags.backup = B_TRUE;
4027 			break;
4028 		case 'h':
4029 			flags.holds = B_TRUE;
4030 			break;
4031 		case 'P':
4032 			flags.parsable = B_TRUE;
4033 			flags.verbose = B_TRUE;
4034 			break;
4035 		case 'v':
4036 			if (flags.verbose)
4037 				extraverbose = B_TRUE;
4038 			flags.verbose = B_TRUE;
4039 			flags.progress = B_TRUE;
4040 			break;
4041 		case 'D':
4042 			flags.dedup = B_TRUE;
4043 			break;
4044 		case 'n':
4045 			flags.dryrun = B_TRUE;
4046 			break;
4047 		case 'L':
4048 			flags.largeblock = B_TRUE;
4049 			break;
4050 		case 'e':
4051 			flags.embed_data = B_TRUE;
4052 			break;
4053 		case 't':
4054 			resume_token = optarg;
4055 			break;
4056 		case 'c':
4057 			flags.compress = B_TRUE;
4058 			break;
4059 		case 'w':
4060 			flags.raw = B_TRUE;
4061 			flags.compress = B_TRUE;
4062 			flags.embed_data = B_TRUE;
4063 			flags.largeblock = B_TRUE;
4064 			break;
4065 		case ':':
4066 			/*
4067 			 * If a parameter was not passed, optopt contains the
4068 			 * value that would normally lead us into the
4069 			 * appropriate case statement.  If it's > 256, then this
4070 			 * must be a longopt and we should look at argv to get
4071 			 * the string.  Otherwise it's just the character, so we
4072 			 * should use it directly.
4073 			 */
4074 			if (optopt <= UINT8_MAX) {
4075 				(void) fprintf(stderr,
4076 				    gettext("missing argument for '%c' "
4077 				    "option\n"), optopt);
4078 			} else {
4079 				(void) fprintf(stderr,
4080 				    gettext("missing argument for '%s' "
4081 				    "option\n"), argv[optind - 1]);
4082 			}
4083 			usage(B_FALSE);
4084 			break;
4085 		case '?':
4086 			/*FALLTHROUGH*/
4087 		default:
4088 			/*
4089 			 * If an invalid flag was passed, optopt contains the
4090 			 * character if it was a short flag, or 0 if it was a
4091 			 * longopt.
4092 			 */
4093 			if (optopt != 0) {
4094 				(void) fprintf(stderr,
4095 				    gettext("invalid option '%c'\n"), optopt);
4096 			} else {
4097 				(void) fprintf(stderr,
4098 				    gettext("invalid option '%s'\n"),
4099 				    argv[optind - 1]);
4100 
4101 			}
4102 			usage(B_FALSE);
4103 		}
4104 	}
4105 
4106 	argc -= optind;
4107 	argv += optind;
4108 
4109 	if (resume_token != NULL) {
4110 		if (fromname != NULL || flags.replicate || flags.props ||
4111 		    flags.backup || flags.dedup) {
4112 			(void) fprintf(stderr,
4113 			    gettext("invalid flags combined with -t\n"));
4114 			usage(B_FALSE);
4115 		}
4116 		if (argc != 0) {
4117 			(void) fprintf(stderr, gettext("no additional "
4118 			    "arguments are permitted with -t\n"));
4119 			usage(B_FALSE);
4120 		}
4121 	} else {
4122 		if (argc < 1) {
4123 			(void) fprintf(stderr,
4124 			    gettext("missing snapshot argument\n"));
4125 			usage(B_FALSE);
4126 		}
4127 		if (argc > 1) {
4128 			(void) fprintf(stderr, gettext("too many arguments\n"));
4129 			usage(B_FALSE);
4130 		}
4131 	}
4132 
4133 	if (!flags.dryrun && isatty(STDOUT_FILENO)) {
4134 		(void) fprintf(stderr,
4135 		    gettext("Error: Stream can not be written to a terminal.\n"
4136 		    "You must redirect standard output.\n"));
4137 		return (1);
4138 	}
4139 
4140 	if (resume_token != NULL) {
4141 		return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
4142 		    resume_token));
4143 	}
4144 
4145 	/*
4146 	 * Special case sending a filesystem, or from a bookmark.
4147 	 */
4148 	if (strchr(argv[0], '@') == NULL ||
4149 	    (fromname && strchr(fromname, '#') != NULL)) {
4150 		char frombuf[ZFS_MAX_DATASET_NAME_LEN];
4151 		enum lzc_send_flags lzc_flags = 0;
4152 
4153 		if (flags.replicate || flags.doall || flags.props ||
4154 		    flags.backup || flags.dedup || flags.holds ||
4155 		    flags.dryrun || flags.verbose || flags.progress) {
4156 			(void) fprintf(stderr,
4157 			    gettext("Error: "
4158 			    "Unsupported flag with filesystem or bookmark.\n"));
4159 			return (1);
4160 		}
4161 
4162 		zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4163 		if (zhp == NULL)
4164 			return (1);
4165 
4166 		if (flags.largeblock)
4167 			lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
4168 		if (flags.embed_data)
4169 			lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
4170 		if (flags.compress)
4171 			lzc_flags |= LZC_SEND_FLAG_COMPRESS;
4172 		if (flags.raw)
4173 			lzc_flags |= LZC_SEND_FLAG_RAW;
4174 
4175 		if (fromname != NULL &&
4176 		    (fromname[0] == '#' || fromname[0] == '@')) {
4177 			/*
4178 			 * Incremental source name begins with # or @.
4179 			 * Default to same fs as target.
4180 			 */
4181 			(void) strlcpy(frombuf, argv[0], sizeof (frombuf));
4182 			cp = strchr(frombuf, '@');
4183 			if (cp != NULL)
4184 				*cp = '\0';
4185 			(void) strlcat(frombuf, fromname, sizeof (frombuf));
4186 			fromname = frombuf;
4187 		}
4188 		err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
4189 		zfs_close(zhp);
4190 		return (err != 0);
4191 	}
4192 
4193 	cp = strchr(argv[0], '@');
4194 	*cp = '\0';
4195 	toname = cp + 1;
4196 	zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4197 	if (zhp == NULL)
4198 		return (1);
4199 
4200 	/*
4201 	 * If they specified the full path to the snapshot, chop off
4202 	 * everything except the short name of the snapshot, but special
4203 	 * case if they specify the origin.
4204 	 */
4205 	if (fromname && (cp = strchr(fromname, '@')) != NULL) {
4206 		char origin[ZFS_MAX_DATASET_NAME_LEN];
4207 		zprop_source_t src;
4208 
4209 		(void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
4210 		    origin, sizeof (origin), &src, NULL, 0, B_FALSE);
4211 
4212 		if (strcmp(origin, fromname) == 0) {
4213 			fromname = NULL;
4214 			flags.fromorigin = B_TRUE;
4215 		} else {
4216 			*cp = '\0';
4217 			if (cp != fromname && strcmp(argv[0], fromname)) {
4218 				(void) fprintf(stderr,
4219 				    gettext("incremental source must be "
4220 				    "in same filesystem\n"));
4221 				usage(B_FALSE);
4222 			}
4223 			fromname = cp + 1;
4224 			if (strchr(fromname, '@') || strchr(fromname, '/')) {
4225 				(void) fprintf(stderr,
4226 				    gettext("invalid incremental source\n"));
4227 				usage(B_FALSE);
4228 			}
4229 		}
4230 	}
4231 
4232 	if (flags.replicate && fromname == NULL)
4233 		flags.doall = B_TRUE;
4234 
4235 	err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4236 	    extraverbose ? &dbgnv : NULL);
4237 
4238 	if (extraverbose && dbgnv != NULL) {
4239 		/*
4240 		 * dump_nvlist prints to stdout, but that's been
4241 		 * redirected to a file.  Make it print to stderr
4242 		 * instead.
4243 		 */
4244 		(void) dup2(STDERR_FILENO, STDOUT_FILENO);
4245 		dump_nvlist(dbgnv, 0);
4246 		nvlist_free(dbgnv);
4247 	}
4248 	zfs_close(zhp);
4249 
4250 	return (err != 0);
4251 }
4252 
4253 /*
4254  * Restore a backup stream from stdin.
4255  */
4256 static int
zfs_do_receive(int argc,char ** argv)4257 zfs_do_receive(int argc, char **argv)
4258 {
4259 	int c, err = 0;
4260 	recvflags_t flags = { 0 };
4261 	boolean_t abort_resumable = B_FALSE;
4262 	nvlist_t *props;
4263 
4264 	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4265 		nomem();
4266 
4267 	/* check options */
4268 	while ((c = getopt(argc, argv, ":o:x:dehnuvFsA")) != -1) {
4269 		switch (c) {
4270 		case 'o':
4271 			if (!parseprop(props, optarg)) {
4272 				nvlist_free(props);
4273 				usage(B_FALSE);
4274 			}
4275 			break;
4276 		case 'x':
4277 			if (!parsepropname(props, optarg)) {
4278 				nvlist_free(props);
4279 				usage(B_FALSE);
4280 			}
4281 			break;
4282 		case 'd':
4283 			flags.isprefix = B_TRUE;
4284 			break;
4285 		case 'e':
4286 			flags.isprefix = B_TRUE;
4287 			flags.istail = B_TRUE;
4288 			break;
4289 		case 'h':
4290 			flags.skipholds = B_TRUE;
4291 			break;
4292 		case 'n':
4293 			flags.dryrun = B_TRUE;
4294 			break;
4295 		case 'u':
4296 			flags.nomount = B_TRUE;
4297 			break;
4298 		case 'v':
4299 			flags.verbose = B_TRUE;
4300 			break;
4301 		case 's':
4302 			flags.resumable = B_TRUE;
4303 			break;
4304 		case 'F':
4305 			flags.force = B_TRUE;
4306 			break;
4307 		case 'A':
4308 			abort_resumable = B_TRUE;
4309 			break;
4310 		case ':':
4311 			(void) fprintf(stderr, gettext("missing argument for "
4312 			    "'%c' option\n"), optopt);
4313 			usage(B_FALSE);
4314 			break;
4315 		case '?':
4316 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4317 			    optopt);
4318 			usage(B_FALSE);
4319 		}
4320 	}
4321 
4322 	argc -= optind;
4323 	argv += optind;
4324 
4325 	/* check number of arguments */
4326 	if (argc < 1) {
4327 		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
4328 		usage(B_FALSE);
4329 	}
4330 	if (argc > 1) {
4331 		(void) fprintf(stderr, gettext("too many arguments\n"));
4332 		usage(B_FALSE);
4333 	}
4334 
4335 	if (abort_resumable) {
4336 		if (flags.isprefix || flags.istail || flags.dryrun ||
4337 		    flags.resumable || flags.nomount) {
4338 			(void) fprintf(stderr, gettext("invalid option"));
4339 			usage(B_FALSE);
4340 		}
4341 
4342 		char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4343 		(void) snprintf(namebuf, sizeof (namebuf),
4344 		    "%s/%%recv", argv[0]);
4345 
4346 		if (zfs_dataset_exists(g_zfs, namebuf,
4347 		    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4348 			zfs_handle_t *zhp = zfs_open(g_zfs,
4349 			    namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4350 			if (zhp == NULL)
4351 				return (1);
4352 			err = zfs_destroy(zhp, B_FALSE);
4353 		} else {
4354 			zfs_handle_t *zhp = zfs_open(g_zfs,
4355 			    argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4356 			if (zhp == NULL)
4357 				usage(B_FALSE);
4358 			if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4359 			    zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4360 			    NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4361 				(void) fprintf(stderr,
4362 				    gettext("'%s' does not have any "
4363 				    "resumable receive state to abort\n"),
4364 				    argv[0]);
4365 				return (1);
4366 			}
4367 			err = zfs_destroy(zhp, B_FALSE);
4368 		}
4369 
4370 		return (err != 0);
4371 	}
4372 
4373 	if (isatty(STDIN_FILENO)) {
4374 		(void) fprintf(stderr,
4375 		    gettext("Error: Backup stream can not be read "
4376 		    "from a terminal.\n"
4377 		    "You must redirect standard input.\n"));
4378 		return (1);
4379 	}
4380 	err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4381 
4382 	return (err != 0);
4383 }
4384 
4385 /*
4386  * allow/unallow stuff
4387  */
4388 /* copied from zfs/sys/dsl_deleg.h */
4389 #define	ZFS_DELEG_PERM_CREATE		"create"
4390 #define	ZFS_DELEG_PERM_DESTROY		"destroy"
4391 #define	ZFS_DELEG_PERM_SNAPSHOT		"snapshot"
4392 #define	ZFS_DELEG_PERM_ROLLBACK		"rollback"
4393 #define	ZFS_DELEG_PERM_CLONE		"clone"
4394 #define	ZFS_DELEG_PERM_PROMOTE		"promote"
4395 #define	ZFS_DELEG_PERM_RENAME		"rename"
4396 #define	ZFS_DELEG_PERM_MOUNT		"mount"
4397 #define	ZFS_DELEG_PERM_SHARE		"share"
4398 #define	ZFS_DELEG_PERM_SEND		"send"
4399 #define	ZFS_DELEG_PERM_RECEIVE		"receive"
4400 #define	ZFS_DELEG_PERM_ALLOW		"allow"
4401 #define	ZFS_DELEG_PERM_USERPROP		"userprop"
4402 #define	ZFS_DELEG_PERM_VSCAN		"vscan" /* ??? */
4403 #define	ZFS_DELEG_PERM_USERQUOTA	"userquota"
4404 #define	ZFS_DELEG_PERM_GROUPQUOTA	"groupquota"
4405 #define	ZFS_DELEG_PERM_USERUSED		"userused"
4406 #define	ZFS_DELEG_PERM_GROUPUSED	"groupused"
4407 #define	ZFS_DELEG_PERM_USEROBJQUOTA	"userobjquota"
4408 #define	ZFS_DELEG_PERM_GROUPOBJQUOTA	"groupobjquota"
4409 #define	ZFS_DELEG_PERM_USEROBJUSED	"userobjused"
4410 #define	ZFS_DELEG_PERM_GROUPOBJUSED	"groupobjused"
4411 
4412 #define	ZFS_DELEG_PERM_HOLD		"hold"
4413 #define	ZFS_DELEG_PERM_RELEASE		"release"
4414 #define	ZFS_DELEG_PERM_DIFF		"diff"
4415 #define	ZFS_DELEG_PERM_BOOKMARK		"bookmark"
4416 #define	ZFS_DELEG_PERM_REMAP		"remap"
4417 #define	ZFS_DELEG_PERM_LOAD_KEY		"load-key"
4418 #define	ZFS_DELEG_PERM_CHANGE_KEY	"change-key"
4419 
4420 #define	ZFS_DELEG_PERM_PROJECTUSED	"projectused"
4421 #define	ZFS_DELEG_PERM_PROJECTQUOTA	"projectquota"
4422 #define	ZFS_DELEG_PERM_PROJECTOBJUSED	"projectobjused"
4423 #define	ZFS_DELEG_PERM_PROJECTOBJQUOTA	"projectobjquota"
4424 
4425 #define	ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4426 
4427 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4428 	{ ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4429 	{ ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4430 	{ ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4431 	{ ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4432 	{ ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4433 	{ ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4434 	{ ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4435 	{ ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4436 	{ ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4437 	{ ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4438 	{ ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4439 	{ ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4440 	{ ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4441 	{ ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4442 	{ ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4443 	{ ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4444 	{ ZFS_DELEG_PERM_REMAP, ZFS_DELEG_NOTE_REMAP },
4445 	{ ZFS_DELEG_PERM_LOAD_KEY, ZFS_DELEG_NOTE_LOAD_KEY },
4446 	{ ZFS_DELEG_PERM_CHANGE_KEY, ZFS_DELEG_NOTE_CHANGE_KEY },
4447 
4448 	{ ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4449 	{ ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4450 	{ ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4451 	{ ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4452 	{ ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4453 	{ ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
4454 	{ ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
4455 	{ ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
4456 	{ ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
4457 	{ ZFS_DELEG_PERM_PROJECTUSED, ZFS_DELEG_NOTE_PROJECTUSED },
4458 	{ ZFS_DELEG_PERM_PROJECTQUOTA, ZFS_DELEG_NOTE_PROJECTQUOTA },
4459 	{ ZFS_DELEG_PERM_PROJECTOBJUSED, ZFS_DELEG_NOTE_PROJECTOBJUSED },
4460 	{ ZFS_DELEG_PERM_PROJECTOBJQUOTA, ZFS_DELEG_NOTE_PROJECTOBJQUOTA },
4461 	{ NULL, ZFS_DELEG_NOTE_NONE }
4462 };
4463 
4464 /* permission structure */
4465 typedef struct deleg_perm {
4466 	zfs_deleg_who_type_t	dp_who_type;
4467 	const char		*dp_name;
4468 	boolean_t		dp_local;
4469 	boolean_t		dp_descend;
4470 } deleg_perm_t;
4471 
4472 /* */
4473 typedef struct deleg_perm_node {
4474 	deleg_perm_t		dpn_perm;
4475 
4476 	uu_avl_node_t		dpn_avl_node;
4477 } deleg_perm_node_t;
4478 
4479 typedef struct fs_perm fs_perm_t;
4480 
4481 /* permissions set */
4482 typedef struct who_perm {
4483 	zfs_deleg_who_type_t	who_type;
4484 	const char		*who_name;		/* id */
4485 	char			who_ug_name[256];	/* user/group name */
4486 	fs_perm_t		*who_fsperm;		/* uplink */
4487 
4488 	uu_avl_t		*who_deleg_perm_avl;	/* permissions */
4489 } who_perm_t;
4490 
4491 /* */
4492 typedef struct who_perm_node {
4493 	who_perm_t	who_perm;
4494 	uu_avl_node_t	who_avl_node;
4495 } who_perm_node_t;
4496 
4497 typedef struct fs_perm_set fs_perm_set_t;
4498 /* fs permissions */
4499 struct fs_perm {
4500 	const char		*fsp_name;
4501 
4502 	uu_avl_t		*fsp_sc_avl;	/* sets,create */
4503 	uu_avl_t		*fsp_uge_avl;	/* user,group,everyone */
4504 
4505 	fs_perm_set_t		*fsp_set;	/* uplink */
4506 };
4507 
4508 /* */
4509 typedef struct fs_perm_node {
4510 	fs_perm_t	fspn_fsperm;
4511 	uu_avl_t	*fspn_avl;
4512 
4513 	uu_list_node_t	fspn_list_node;
4514 } fs_perm_node_t;
4515 
4516 /* top level structure */
4517 struct fs_perm_set {
4518 	uu_list_pool_t	*fsps_list_pool;
4519 	uu_list_t	*fsps_list; /* list of fs_perms */
4520 
4521 	uu_avl_pool_t	*fsps_named_set_avl_pool;
4522 	uu_avl_pool_t	*fsps_who_perm_avl_pool;
4523 	uu_avl_pool_t	*fsps_deleg_perm_avl_pool;
4524 };
4525 
4526 static inline const char *
deleg_perm_type(zfs_deleg_note_t note)4527 deleg_perm_type(zfs_deleg_note_t note)
4528 {
4529 	/* subcommands */
4530 	switch (note) {
4531 		/* SUBCOMMANDS */
4532 		/* OTHER */
4533 	case ZFS_DELEG_NOTE_GROUPQUOTA:
4534 	case ZFS_DELEG_NOTE_GROUPUSED:
4535 	case ZFS_DELEG_NOTE_USERPROP:
4536 	case ZFS_DELEG_NOTE_USERQUOTA:
4537 	case ZFS_DELEG_NOTE_USERUSED:
4538 	case ZFS_DELEG_NOTE_USEROBJQUOTA:
4539 	case ZFS_DELEG_NOTE_USEROBJUSED:
4540 	case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4541 	case ZFS_DELEG_NOTE_GROUPOBJUSED:
4542 	case ZFS_DELEG_NOTE_PROJECTUSED:
4543 	case ZFS_DELEG_NOTE_PROJECTQUOTA:
4544 	case ZFS_DELEG_NOTE_PROJECTOBJUSED:
4545 	case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
4546 		/* other */
4547 		return (gettext("other"));
4548 	default:
4549 		return (gettext("subcommand"));
4550 	}
4551 }
4552 
4553 static int
who_type2weight(zfs_deleg_who_type_t who_type)4554 who_type2weight(zfs_deleg_who_type_t who_type)
4555 {
4556 	int res;
4557 	switch (who_type) {
4558 		case ZFS_DELEG_NAMED_SET_SETS:
4559 		case ZFS_DELEG_NAMED_SET:
4560 			res = 0;
4561 			break;
4562 		case ZFS_DELEG_CREATE_SETS:
4563 		case ZFS_DELEG_CREATE:
4564 			res = 1;
4565 			break;
4566 		case ZFS_DELEG_USER_SETS:
4567 		case ZFS_DELEG_USER:
4568 			res = 2;
4569 			break;
4570 		case ZFS_DELEG_GROUP_SETS:
4571 		case ZFS_DELEG_GROUP:
4572 			res = 3;
4573 			break;
4574 		case ZFS_DELEG_EVERYONE_SETS:
4575 		case ZFS_DELEG_EVERYONE:
4576 			res = 4;
4577 			break;
4578 		default:
4579 			res = -1;
4580 	}
4581 
4582 	return (res);
4583 }
4584 
4585 /* ARGSUSED */
4586 static int
who_perm_compare(const void * larg,const void * rarg,void * unused)4587 who_perm_compare(const void *larg, const void *rarg, void *unused)
4588 {
4589 	const who_perm_node_t *l = larg;
4590 	const who_perm_node_t *r = rarg;
4591 	zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4592 	zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4593 	int lweight = who_type2weight(ltype);
4594 	int rweight = who_type2weight(rtype);
4595 	int res = lweight - rweight;
4596 	if (res == 0)
4597 		res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4598 		    ZFS_MAX_DELEG_NAME-1);
4599 
4600 	if (res == 0)
4601 		return (0);
4602 	if (res > 0)
4603 		return (1);
4604 	else
4605 		return (-1);
4606 }
4607 
4608 /* ARGSUSED */
4609 static int
deleg_perm_compare(const void * larg,const void * rarg,void * unused)4610 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4611 {
4612 	const deleg_perm_node_t *l = larg;
4613 	const deleg_perm_node_t *r = rarg;
4614 	int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4615 	    ZFS_MAX_DELEG_NAME-1);
4616 
4617 	if (res == 0)
4618 		return (0);
4619 
4620 	if (res > 0)
4621 		return (1);
4622 	else
4623 		return (-1);
4624 }
4625 
4626 static inline void
fs_perm_set_init(fs_perm_set_t * fspset)4627 fs_perm_set_init(fs_perm_set_t *fspset)
4628 {
4629 	bzero(fspset, sizeof (fs_perm_set_t));
4630 
4631 	if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4632 	    sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4633 	    NULL, UU_DEFAULT)) == NULL)
4634 		nomem();
4635 	if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4636 	    UU_DEFAULT)) == NULL)
4637 		nomem();
4638 
4639 	if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4640 	    "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4641 	    who_perm_node_t, who_avl_node), who_perm_compare,
4642 	    UU_DEFAULT)) == NULL)
4643 		nomem();
4644 
4645 	if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4646 	    "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4647 	    who_perm_node_t, who_avl_node), who_perm_compare,
4648 	    UU_DEFAULT)) == NULL)
4649 		nomem();
4650 
4651 	if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4652 	    "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4653 	    deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4654 	    == NULL)
4655 		nomem();
4656 }
4657 
4658 static inline void fs_perm_fini(fs_perm_t *);
4659 static inline void who_perm_fini(who_perm_t *);
4660 
4661 static inline void
fs_perm_set_fini(fs_perm_set_t * fspset)4662 fs_perm_set_fini(fs_perm_set_t *fspset)
4663 {
4664 	fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4665 
4666 	while (node != NULL) {
4667 		fs_perm_node_t *next_node =
4668 		    uu_list_next(fspset->fsps_list, node);
4669 		fs_perm_t *fsperm = &node->fspn_fsperm;
4670 		fs_perm_fini(fsperm);
4671 		uu_list_remove(fspset->fsps_list, node);
4672 		free(node);
4673 		node = next_node;
4674 	}
4675 
4676 	uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4677 	uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4678 	uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4679 }
4680 
4681 static inline void
deleg_perm_init(deleg_perm_t * deleg_perm,zfs_deleg_who_type_t type,const char * name)4682 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4683     const char *name)
4684 {
4685 	deleg_perm->dp_who_type = type;
4686 	deleg_perm->dp_name = name;
4687 }
4688 
4689 static inline void
who_perm_init(who_perm_t * who_perm,fs_perm_t * fsperm,zfs_deleg_who_type_t type,const char * name)4690 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4691     zfs_deleg_who_type_t type, const char *name)
4692 {
4693 	uu_avl_pool_t	*pool;
4694 	pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4695 
4696 	bzero(who_perm, sizeof (who_perm_t));
4697 
4698 	if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4699 	    UU_DEFAULT)) == NULL)
4700 		nomem();
4701 
4702 	who_perm->who_type = type;
4703 	who_perm->who_name = name;
4704 	who_perm->who_fsperm = fsperm;
4705 }
4706 
4707 static inline void
who_perm_fini(who_perm_t * who_perm)4708 who_perm_fini(who_perm_t *who_perm)
4709 {
4710 	deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4711 
4712 	while (node != NULL) {
4713 		deleg_perm_node_t *next_node =
4714 		    uu_avl_next(who_perm->who_deleg_perm_avl, node);
4715 
4716 		uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4717 		free(node);
4718 		node = next_node;
4719 	}
4720 
4721 	uu_avl_destroy(who_perm->who_deleg_perm_avl);
4722 }
4723 
4724 static inline void
fs_perm_init(fs_perm_t * fsperm,fs_perm_set_t * fspset,const char * fsname)4725 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4726 {
4727 	uu_avl_pool_t	*nset_pool = fspset->fsps_named_set_avl_pool;
4728 	uu_avl_pool_t	*who_pool = fspset->fsps_who_perm_avl_pool;
4729 
4730 	bzero(fsperm, sizeof (fs_perm_t));
4731 
4732 	if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4733 	    == NULL)
4734 		nomem();
4735 
4736 	if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4737 	    == NULL)
4738 		nomem();
4739 
4740 	fsperm->fsp_set = fspset;
4741 	fsperm->fsp_name = fsname;
4742 }
4743 
4744 static inline void
fs_perm_fini(fs_perm_t * fsperm)4745 fs_perm_fini(fs_perm_t *fsperm)
4746 {
4747 	who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4748 	while (node != NULL) {
4749 		who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4750 		    node);
4751 		who_perm_t *who_perm = &node->who_perm;
4752 		who_perm_fini(who_perm);
4753 		uu_avl_remove(fsperm->fsp_sc_avl, node);
4754 		free(node);
4755 		node = next_node;
4756 	}
4757 
4758 	node = uu_avl_first(fsperm->fsp_uge_avl);
4759 	while (node != NULL) {
4760 		who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4761 		    node);
4762 		who_perm_t *who_perm = &node->who_perm;
4763 		who_perm_fini(who_perm);
4764 		uu_avl_remove(fsperm->fsp_uge_avl, node);
4765 		free(node);
4766 		node = next_node;
4767 	}
4768 
4769 	uu_avl_destroy(fsperm->fsp_sc_avl);
4770 	uu_avl_destroy(fsperm->fsp_uge_avl);
4771 }
4772 
4773 static void
set_deleg_perm_node(uu_avl_t * avl,deleg_perm_node_t * node,zfs_deleg_who_type_t who_type,const char * name,char locality)4774 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4775     zfs_deleg_who_type_t who_type, const char *name, char locality)
4776 {
4777 	uu_avl_index_t idx = 0;
4778 
4779 	deleg_perm_node_t *found_node = NULL;
4780 	deleg_perm_t	*deleg_perm = &node->dpn_perm;
4781 
4782 	deleg_perm_init(deleg_perm, who_type, name);
4783 
4784 	if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4785 	    == NULL)
4786 		uu_avl_insert(avl, node, idx);
4787 	else {
4788 		node = found_node;
4789 		deleg_perm = &node->dpn_perm;
4790 	}
4791 
4792 
4793 	switch (locality) {
4794 	case ZFS_DELEG_LOCAL:
4795 		deleg_perm->dp_local = B_TRUE;
4796 		break;
4797 	case ZFS_DELEG_DESCENDENT:
4798 		deleg_perm->dp_descend = B_TRUE;
4799 		break;
4800 	case ZFS_DELEG_NA:
4801 		break;
4802 	default:
4803 		assert(B_FALSE); /* invalid locality */
4804 	}
4805 }
4806 
4807 static inline int
parse_who_perm(who_perm_t * who_perm,nvlist_t * nvl,char locality)4808 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4809 {
4810 	nvpair_t *nvp = NULL;
4811 	fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4812 	uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4813 	zfs_deleg_who_type_t who_type = who_perm->who_type;
4814 
4815 	while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4816 		const char *name = nvpair_name(nvp);
4817 		data_type_t type = nvpair_type(nvp);
4818 		uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4819 		deleg_perm_node_t *node =
4820 		    safe_malloc(sizeof (deleg_perm_node_t));
4821 
4822 		assert(type == DATA_TYPE_BOOLEAN);
4823 
4824 		uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4825 		set_deleg_perm_node(avl, node, who_type, name, locality);
4826 	}
4827 
4828 	return (0);
4829 }
4830 
4831 static inline int
parse_fs_perm(fs_perm_t * fsperm,nvlist_t * nvl)4832 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4833 {
4834 	nvpair_t *nvp = NULL;
4835 	fs_perm_set_t *fspset = fsperm->fsp_set;
4836 
4837 	while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4838 		nvlist_t *nvl2 = NULL;
4839 		const char *name = nvpair_name(nvp);
4840 		uu_avl_t *avl = NULL;
4841 		uu_avl_pool_t *avl_pool = NULL;
4842 		zfs_deleg_who_type_t perm_type = name[0];
4843 		char perm_locality = name[1];
4844 		const char *perm_name = name + 3;
4845 		boolean_t is_set = B_TRUE;
4846 		who_perm_t *who_perm = NULL;
4847 
4848 		assert('$' == name[2]);
4849 
4850 		if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4851 			return (-1);
4852 
4853 		switch (perm_type) {
4854 		case ZFS_DELEG_CREATE:
4855 		case ZFS_DELEG_CREATE_SETS:
4856 		case ZFS_DELEG_NAMED_SET:
4857 		case ZFS_DELEG_NAMED_SET_SETS:
4858 			avl_pool = fspset->fsps_named_set_avl_pool;
4859 			avl = fsperm->fsp_sc_avl;
4860 			break;
4861 		case ZFS_DELEG_USER:
4862 		case ZFS_DELEG_USER_SETS:
4863 		case ZFS_DELEG_GROUP:
4864 		case ZFS_DELEG_GROUP_SETS:
4865 		case ZFS_DELEG_EVERYONE:
4866 		case ZFS_DELEG_EVERYONE_SETS:
4867 			avl_pool = fspset->fsps_who_perm_avl_pool;
4868 			avl = fsperm->fsp_uge_avl;
4869 			break;
4870 
4871 		default:
4872 			assert(!"unhandled zfs_deleg_who_type_t");
4873 		}
4874 
4875 		if (is_set) {
4876 			who_perm_node_t *found_node = NULL;
4877 			who_perm_node_t *node = safe_malloc(
4878 			    sizeof (who_perm_node_t));
4879 			who_perm = &node->who_perm;
4880 			uu_avl_index_t idx = 0;
4881 
4882 			uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4883 			who_perm_init(who_perm, fsperm, perm_type, perm_name);
4884 
4885 			if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4886 			    == NULL) {
4887 				if (avl == fsperm->fsp_uge_avl) {
4888 					uid_t rid = 0;
4889 					struct passwd *p = NULL;
4890 					struct group *g = NULL;
4891 					const char *nice_name = NULL;
4892 
4893 					switch (perm_type) {
4894 					case ZFS_DELEG_USER_SETS:
4895 					case ZFS_DELEG_USER:
4896 						rid = atoi(perm_name);
4897 						p = getpwuid(rid);
4898 						if (p)
4899 							nice_name = p->pw_name;
4900 						break;
4901 					case ZFS_DELEG_GROUP_SETS:
4902 					case ZFS_DELEG_GROUP:
4903 						rid = atoi(perm_name);
4904 						g = getgrgid(rid);
4905 						if (g)
4906 							nice_name = g->gr_name;
4907 						break;
4908 
4909 					default:
4910 						break;
4911 					}
4912 
4913 					if (nice_name != NULL)
4914 						(void) strlcpy(
4915 						    node->who_perm.who_ug_name,
4916 						    nice_name, 256);
4917 				}
4918 
4919 				uu_avl_insert(avl, node, idx);
4920 			} else {
4921 				node = found_node;
4922 				who_perm = &node->who_perm;
4923 			}
4924 		}
4925 
4926 		(void) parse_who_perm(who_perm, nvl2, perm_locality);
4927 	}
4928 
4929 	return (0);
4930 }
4931 
4932 static inline int
parse_fs_perm_set(fs_perm_set_t * fspset,nvlist_t * nvl)4933 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4934 {
4935 	nvpair_t *nvp = NULL;
4936 	uu_avl_index_t idx = 0;
4937 
4938 	while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4939 		nvlist_t *nvl2 = NULL;
4940 		const char *fsname = nvpair_name(nvp);
4941 		data_type_t type = nvpair_type(nvp);
4942 		fs_perm_t *fsperm = NULL;
4943 		fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4944 		if (node == NULL)
4945 			nomem();
4946 
4947 		fsperm = &node->fspn_fsperm;
4948 
4949 		assert(DATA_TYPE_NVLIST == type);
4950 
4951 		uu_list_node_init(node, &node->fspn_list_node,
4952 		    fspset->fsps_list_pool);
4953 
4954 		idx = uu_list_numnodes(fspset->fsps_list);
4955 		fs_perm_init(fsperm, fspset, fsname);
4956 
4957 		if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4958 			return (-1);
4959 
4960 		(void) parse_fs_perm(fsperm, nvl2);
4961 
4962 		uu_list_insert(fspset->fsps_list, node, idx);
4963 	}
4964 
4965 	return (0);
4966 }
4967 
4968 static inline const char *
deleg_perm_comment(zfs_deleg_note_t note)4969 deleg_perm_comment(zfs_deleg_note_t note)
4970 {
4971 	const char *str = "";
4972 
4973 	/* subcommands */
4974 	switch (note) {
4975 		/* SUBCOMMANDS */
4976 	case ZFS_DELEG_NOTE_ALLOW:
4977 		str = gettext("Must also have the permission that is being"
4978 		    "\n\t\t\t\tallowed");
4979 		break;
4980 	case ZFS_DELEG_NOTE_CLONE:
4981 		str = gettext("Must also have the 'create' ability and 'mount'"
4982 		    "\n\t\t\t\tability in the origin file system");
4983 		break;
4984 	case ZFS_DELEG_NOTE_CREATE:
4985 		str = gettext("Must also have the 'mount' ability");
4986 		break;
4987 	case ZFS_DELEG_NOTE_DESTROY:
4988 		str = gettext("Must also have the 'mount' ability");
4989 		break;
4990 	case ZFS_DELEG_NOTE_DIFF:
4991 		str = gettext("Allows lookup of paths within a dataset;"
4992 		    "\n\t\t\t\tgiven an object number. Ordinary users need this"
4993 		    "\n\t\t\t\tin order to use zfs diff");
4994 		break;
4995 	case ZFS_DELEG_NOTE_HOLD:
4996 		str = gettext("Allows adding a user hold to a snapshot");
4997 		break;
4998 	case ZFS_DELEG_NOTE_MOUNT:
4999 		str = gettext("Allows mount/umount of ZFS datasets");
5000 		break;
5001 	case ZFS_DELEG_NOTE_PROMOTE:
5002 		str = gettext("Must also have the 'mount'\n\t\t\t\tand"
5003 		    " 'promote' ability in the origin file system");
5004 		break;
5005 	case ZFS_DELEG_NOTE_RECEIVE:
5006 		str = gettext("Must also have the 'mount' and 'create'"
5007 		    " ability");
5008 		break;
5009 	case ZFS_DELEG_NOTE_RELEASE:
5010 		str = gettext("Allows releasing a user hold which\n\t\t\t\t"
5011 		    "might destroy the snapshot");
5012 		break;
5013 	case ZFS_DELEG_NOTE_RENAME:
5014 		str = gettext("Must also have the 'mount' and 'create'"
5015 		    "\n\t\t\t\tability in the new parent");
5016 		break;
5017 	case ZFS_DELEG_NOTE_ROLLBACK:
5018 		str = gettext("");
5019 		break;
5020 	case ZFS_DELEG_NOTE_SEND:
5021 		str = gettext("");
5022 		break;
5023 	case ZFS_DELEG_NOTE_SHARE:
5024 		str = gettext("Allows sharing file systems over NFS or SMB"
5025 		    "\n\t\t\t\tprotocols");
5026 		break;
5027 	case ZFS_DELEG_NOTE_SNAPSHOT:
5028 		str = gettext("");
5029 		break;
5030 	case ZFS_DELEG_NOTE_LOAD_KEY:
5031 		str = gettext("Allows loading or unloading an encryption key");
5032 		break;
5033 	case ZFS_DELEG_NOTE_CHANGE_KEY:
5034 		str = gettext("Allows changing or adding an encryption key");
5035 		break;
5036 /*
5037  *	case ZFS_DELEG_NOTE_VSCAN:
5038  *		str = gettext("");
5039  *		break;
5040  */
5041 		/* OTHER */
5042 	case ZFS_DELEG_NOTE_GROUPQUOTA:
5043 		str = gettext("Allows accessing any groupquota@... property");
5044 		break;
5045 	case ZFS_DELEG_NOTE_GROUPUSED:
5046 		str = gettext("Allows reading any groupused@... property");
5047 		break;
5048 	case ZFS_DELEG_NOTE_USERPROP:
5049 		str = gettext("Allows changing any user property");
5050 		break;
5051 	case ZFS_DELEG_NOTE_USERQUOTA:
5052 		str = gettext("Allows accessing any userquota@... property");
5053 		break;
5054 	case ZFS_DELEG_NOTE_USERUSED:
5055 		str = gettext("Allows reading any userused@... property");
5056 		break;
5057 	case ZFS_DELEG_NOTE_USEROBJQUOTA:
5058 		str = gettext("Allows accessing any userobjquota@... property");
5059 		break;
5060 	case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
5061 		str = gettext("Allows accessing any \n\t\t\t\t"
5062 		    "groupobjquota@... property");
5063 		break;
5064 	case ZFS_DELEG_NOTE_GROUPOBJUSED:
5065 		str = gettext("Allows reading any groupobjused@... property");
5066 		break;
5067 	case ZFS_DELEG_NOTE_USEROBJUSED:
5068 		str = gettext("Allows reading any userobjused@... property");
5069 		break;
5070 	case ZFS_DELEG_NOTE_PROJECTQUOTA:
5071 		str = gettext("Allows accessing any projectquota@... property");
5072 		break;
5073 	case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
5074 		str = gettext("Allows accessing any \n\t\t\t\t"
5075 		    "projectobjquota@... property");
5076 		break;
5077 	case ZFS_DELEG_NOTE_PROJECTUSED:
5078 		str = gettext("Allows reading any projectused@... property");
5079 		break;
5080 	case ZFS_DELEG_NOTE_PROJECTOBJUSED:
5081 		str = gettext("Allows accessing any \n\t\t\t\t"
5082 		    "projectobjused@... property");
5083 		break;
5084 		/* other */
5085 	default:
5086 		str = "";
5087 	}
5088 
5089 	return (str);
5090 }
5091 
5092 struct allow_opts {
5093 	boolean_t local;
5094 	boolean_t descend;
5095 	boolean_t user;
5096 	boolean_t group;
5097 	boolean_t everyone;
5098 	boolean_t create;
5099 	boolean_t set;
5100 	boolean_t recursive; /* unallow only */
5101 	boolean_t prt_usage;
5102 
5103 	boolean_t prt_perms;
5104 	char *who;
5105 	char *perms;
5106 	const char *dataset;
5107 };
5108 
5109 static inline int
prop_cmp(const void * a,const void * b)5110 prop_cmp(const void *a, const void *b)
5111 {
5112 	const char *str1 = *(const char **)a;
5113 	const char *str2 = *(const char **)b;
5114 	return (strcmp(str1, str2));
5115 }
5116 
5117 static void
allow_usage(boolean_t un,boolean_t requested,const char * msg)5118 allow_usage(boolean_t un, boolean_t requested, const char *msg)
5119 {
5120 	const char *opt_desc[] = {
5121 		"-h", gettext("show this help message and exit"),
5122 		"-l", gettext("set permission locally"),
5123 		"-d", gettext("set permission for descents"),
5124 		"-u", gettext("set permission for user"),
5125 		"-g", gettext("set permission for group"),
5126 		"-e", gettext("set permission for everyone"),
5127 		"-c", gettext("set create time permission"),
5128 		"-s", gettext("define permission set"),
5129 		/* unallow only */
5130 		"-r", gettext("remove permissions recursively"),
5131 	};
5132 	size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
5133 	size_t allow_size = unallow_size - 2;
5134 	const char *props[ZFS_NUM_PROPS];
5135 	int i;
5136 	size_t count = 0;
5137 	FILE *fp = requested ? stdout : stderr;
5138 	zprop_desc_t *pdtbl = zfs_prop_get_table();
5139 	const char *fmt = gettext("%-16s %-14s\t%s\n");
5140 
5141 	(void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
5142 	    HELP_ALLOW));
5143 	(void) fprintf(fp, gettext("Options:\n"));
5144 	for (int i = 0; i < (un ? unallow_size : allow_size); i++) {
5145 		const char *opt = opt_desc[i++];
5146 		const char *optdsc = opt_desc[i];
5147 		(void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
5148 	}
5149 
5150 	(void) fprintf(fp, gettext("\nThe following permissions are "
5151 	    "supported:\n\n"));
5152 	(void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
5153 	    gettext("NOTES"));
5154 	for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
5155 		const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
5156 		zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
5157 		const char *perm_type = deleg_perm_type(perm_note);
5158 		const char *perm_comment = deleg_perm_comment(perm_note);
5159 		(void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
5160 	}
5161 
5162 	for (i = 0; i < ZFS_NUM_PROPS; i++) {
5163 		zprop_desc_t *pd = &pdtbl[i];
5164 		if (pd->pd_visible != B_TRUE)
5165 			continue;
5166 
5167 		if (pd->pd_attr == PROP_READONLY)
5168 			continue;
5169 
5170 		props[count++] = pd->pd_name;
5171 	}
5172 	props[count] = NULL;
5173 
5174 	qsort(props, count, sizeof (char *), prop_cmp);
5175 
5176 	for (i = 0; i < count; i++)
5177 		(void) fprintf(fp, fmt, props[i], gettext("property"), "");
5178 
5179 	if (msg != NULL)
5180 		(void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
5181 
5182 	exit(requested ? 0 : 2);
5183 }
5184 
5185 static inline const char *
munge_args(int argc,char ** argv,boolean_t un,size_t expected_argc,char ** permsp)5186 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
5187     char **permsp)
5188 {
5189 	if (un && argc == expected_argc - 1)
5190 		*permsp = NULL;
5191 	else if (argc == expected_argc)
5192 		*permsp = argv[argc - 2];
5193 	else
5194 		allow_usage(un, B_FALSE,
5195 		    gettext("wrong number of parameters\n"));
5196 
5197 	return (argv[argc - 1]);
5198 }
5199 
5200 static void
parse_allow_args(int argc,char ** argv,boolean_t un,struct allow_opts * opts)5201 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
5202 {
5203 	int uge_sum = opts->user + opts->group + opts->everyone;
5204 	int csuge_sum = opts->create + opts->set + uge_sum;
5205 	int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
5206 	int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
5207 
5208 	if (uge_sum > 1)
5209 		allow_usage(un, B_FALSE,
5210 		    gettext("-u, -g, and -e are mutually exclusive\n"));
5211 
5212 	if (opts->prt_usage) {
5213 		if (argc == 0 && all_sum == 0)
5214 			allow_usage(un, B_TRUE, NULL);
5215 		else
5216 			usage(B_FALSE);
5217 	}
5218 
5219 	if (opts->set) {
5220 		if (csuge_sum > 1)
5221 			allow_usage(un, B_FALSE,
5222 			    gettext("invalid options combined with -s\n"));
5223 
5224 		opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5225 		if (argv[0][0] != '@')
5226 			allow_usage(un, B_FALSE,
5227 			    gettext("invalid set name: missing '@' prefix\n"));
5228 		opts->who = argv[0];
5229 	} else if (opts->create) {
5230 		if (ldcsuge_sum > 1)
5231 			allow_usage(un, B_FALSE,
5232 			    gettext("invalid options combined with -c\n"));
5233 		opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5234 	} else if (opts->everyone) {
5235 		if (csuge_sum > 1)
5236 			allow_usage(un, B_FALSE,
5237 			    gettext("invalid options combined with -e\n"));
5238 		opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5239 	} else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
5240 	    == 0) {
5241 		opts->everyone = B_TRUE;
5242 		argc--;
5243 		argv++;
5244 		opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5245 	} else if (argc == 1 && !un) {
5246 		opts->prt_perms = B_TRUE;
5247 		opts->dataset = argv[argc-1];
5248 	} else {
5249 		opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5250 		opts->who = argv[0];
5251 	}
5252 
5253 	if (!opts->local && !opts->descend) {
5254 		opts->local = B_TRUE;
5255 		opts->descend = B_TRUE;
5256 	}
5257 }
5258 
5259 static void
store_allow_perm(zfs_deleg_who_type_t type,boolean_t local,boolean_t descend,const char * who,char * perms,nvlist_t * top_nvl)5260 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
5261     const char *who, char *perms, nvlist_t *top_nvl)
5262 {
5263 	int i;
5264 	char ld[2] = { '\0', '\0' };
5265 	char who_buf[MAXNAMELEN + 32];
5266 	char base_type = '\0';
5267 	char set_type = '\0';
5268 	nvlist_t *base_nvl = NULL;
5269 	nvlist_t *set_nvl = NULL;
5270 	nvlist_t *nvl;
5271 
5272 	if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
5273 		nomem();
5274 	if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
5275 		nomem();
5276 
5277 	switch (type) {
5278 	case ZFS_DELEG_NAMED_SET_SETS:
5279 	case ZFS_DELEG_NAMED_SET:
5280 		set_type = ZFS_DELEG_NAMED_SET_SETS;
5281 		base_type = ZFS_DELEG_NAMED_SET;
5282 		ld[0] = ZFS_DELEG_NA;
5283 		break;
5284 	case ZFS_DELEG_CREATE_SETS:
5285 	case ZFS_DELEG_CREATE:
5286 		set_type = ZFS_DELEG_CREATE_SETS;
5287 		base_type = ZFS_DELEG_CREATE;
5288 		ld[0] = ZFS_DELEG_NA;
5289 		break;
5290 	case ZFS_DELEG_USER_SETS:
5291 	case ZFS_DELEG_USER:
5292 		set_type = ZFS_DELEG_USER_SETS;
5293 		base_type = ZFS_DELEG_USER;
5294 		if (local)
5295 			ld[0] = ZFS_DELEG_LOCAL;
5296 		if (descend)
5297 			ld[1] = ZFS_DELEG_DESCENDENT;
5298 		break;
5299 	case ZFS_DELEG_GROUP_SETS:
5300 	case ZFS_DELEG_GROUP:
5301 		set_type = ZFS_DELEG_GROUP_SETS;
5302 		base_type = ZFS_DELEG_GROUP;
5303 		if (local)
5304 			ld[0] = ZFS_DELEG_LOCAL;
5305 		if (descend)
5306 			ld[1] = ZFS_DELEG_DESCENDENT;
5307 		break;
5308 	case ZFS_DELEG_EVERYONE_SETS:
5309 	case ZFS_DELEG_EVERYONE:
5310 		set_type = ZFS_DELEG_EVERYONE_SETS;
5311 		base_type = ZFS_DELEG_EVERYONE;
5312 		if (local)
5313 			ld[0] = ZFS_DELEG_LOCAL;
5314 		if (descend)
5315 			ld[1] = ZFS_DELEG_DESCENDENT;
5316 		break;
5317 
5318 	default:
5319 		assert(set_type != '\0' && base_type != '\0');
5320 	}
5321 
5322 	if (perms != NULL) {
5323 		char *curr = perms;
5324 		char *end = curr + strlen(perms);
5325 
5326 		while (curr < end) {
5327 			char *delim = strchr(curr, ',');
5328 			if (delim == NULL)
5329 				delim = end;
5330 			else
5331 				*delim = '\0';
5332 
5333 			if (curr[0] == '@')
5334 				nvl = set_nvl;
5335 			else
5336 				nvl = base_nvl;
5337 
5338 			(void) nvlist_add_boolean(nvl, curr);
5339 			if (delim != end)
5340 				*delim = ',';
5341 			curr = delim + 1;
5342 		}
5343 
5344 		for (i = 0; i < 2; i++) {
5345 			char locality = ld[i];
5346 			if (locality == 0)
5347 				continue;
5348 
5349 			if (!nvlist_empty(base_nvl)) {
5350 				if (who != NULL)
5351 					(void) snprintf(who_buf,
5352 					    sizeof (who_buf), "%c%c$%s",
5353 					    base_type, locality, who);
5354 				else
5355 					(void) snprintf(who_buf,
5356 					    sizeof (who_buf), "%c%c$",
5357 					    base_type, locality);
5358 
5359 				(void) nvlist_add_nvlist(top_nvl, who_buf,
5360 				    base_nvl);
5361 			}
5362 
5363 
5364 			if (!nvlist_empty(set_nvl)) {
5365 				if (who != NULL)
5366 					(void) snprintf(who_buf,
5367 					    sizeof (who_buf), "%c%c$%s",
5368 					    set_type, locality, who);
5369 				else
5370 					(void) snprintf(who_buf,
5371 					    sizeof (who_buf), "%c%c$",
5372 					    set_type, locality);
5373 
5374 				(void) nvlist_add_nvlist(top_nvl, who_buf,
5375 				    set_nvl);
5376 			}
5377 		}
5378 	} else {
5379 		for (i = 0; i < 2; i++) {
5380 			char locality = ld[i];
5381 			if (locality == 0)
5382 				continue;
5383 
5384 			if (who != NULL)
5385 				(void) snprintf(who_buf, sizeof (who_buf),
5386 				    "%c%c$%s", base_type, locality, who);
5387 			else
5388 				(void) snprintf(who_buf, sizeof (who_buf),
5389 				    "%c%c$", base_type, locality);
5390 			(void) nvlist_add_boolean(top_nvl, who_buf);
5391 
5392 			if (who != NULL)
5393 				(void) snprintf(who_buf, sizeof (who_buf),
5394 				    "%c%c$%s", set_type, locality, who);
5395 			else
5396 				(void) snprintf(who_buf, sizeof (who_buf),
5397 				    "%c%c$", set_type, locality);
5398 			(void) nvlist_add_boolean(top_nvl, who_buf);
5399 		}
5400 	}
5401 }
5402 
5403 static int
construct_fsacl_list(boolean_t un,struct allow_opts * opts,nvlist_t ** nvlp)5404 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5405 {
5406 	if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5407 		nomem();
5408 
5409 	if (opts->set) {
5410 		store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5411 		    opts->descend, opts->who, opts->perms, *nvlp);
5412 	} else if (opts->create) {
5413 		store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5414 		    opts->descend, NULL, opts->perms, *nvlp);
5415 	} else if (opts->everyone) {
5416 		store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5417 		    opts->descend, NULL, opts->perms, *nvlp);
5418 	} else {
5419 		char *curr = opts->who;
5420 		char *end = curr + strlen(curr);
5421 
5422 		while (curr < end) {
5423 			const char *who;
5424 			zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5425 			char *endch;
5426 			char *delim = strchr(curr, ',');
5427 			char errbuf[256];
5428 			char id[64];
5429 			struct passwd *p = NULL;
5430 			struct group *g = NULL;
5431 
5432 			uid_t rid;
5433 			if (delim == NULL)
5434 				delim = end;
5435 			else
5436 				*delim = '\0';
5437 
5438 			rid = (uid_t)strtol(curr, &endch, 0);
5439 			if (opts->user) {
5440 				who_type = ZFS_DELEG_USER;
5441 				if (*endch != '\0')
5442 					p = getpwnam(curr);
5443 				else
5444 					p = getpwuid(rid);
5445 
5446 				if (p != NULL)
5447 					rid = p->pw_uid;
5448 				else {
5449 					(void) snprintf(errbuf, 256, gettext(
5450 					    "invalid user %s"), curr);
5451 					allow_usage(un, B_TRUE, errbuf);
5452 				}
5453 			} else if (opts->group) {
5454 				who_type = ZFS_DELEG_GROUP;
5455 				if (*endch != '\0')
5456 					g = getgrnam(curr);
5457 				else
5458 					g = getgrgid(rid);
5459 
5460 				if (g != NULL)
5461 					rid = g->gr_gid;
5462 				else {
5463 					(void) snprintf(errbuf, 256, gettext(
5464 					    "invalid group %s"),  curr);
5465 					allow_usage(un, B_TRUE, errbuf);
5466 				}
5467 			} else {
5468 				if (*endch != '\0') {
5469 					p = getpwnam(curr);
5470 				} else {
5471 					p = getpwuid(rid);
5472 				}
5473 
5474 				if (p == NULL) {
5475 					if (*endch != '\0') {
5476 						g = getgrnam(curr);
5477 					} else {
5478 						g = getgrgid(rid);
5479 					}
5480 				}
5481 
5482 				if (p != NULL) {
5483 					who_type = ZFS_DELEG_USER;
5484 					rid = p->pw_uid;
5485 				} else if (g != NULL) {
5486 					who_type = ZFS_DELEG_GROUP;
5487 					rid = g->gr_gid;
5488 				} else {
5489 					(void) snprintf(errbuf, 256, gettext(
5490 					    "invalid user/group %s"), curr);
5491 					allow_usage(un, B_TRUE, errbuf);
5492 				}
5493 			}
5494 
5495 			(void) sprintf(id, "%u", rid);
5496 			who = id;
5497 
5498 			store_allow_perm(who_type, opts->local,
5499 			    opts->descend, who, opts->perms, *nvlp);
5500 			curr = delim + 1;
5501 		}
5502 	}
5503 
5504 	return (0);
5505 }
5506 
5507 static void
print_set_creat_perms(uu_avl_t * who_avl)5508 print_set_creat_perms(uu_avl_t *who_avl)
5509 {
5510 	const char *sc_title[] = {
5511 		gettext("Permission sets:\n"),
5512 		gettext("Create time permissions:\n"),
5513 		NULL
5514 	};
5515 	who_perm_node_t *who_node = NULL;
5516 	int prev_weight = -1;
5517 
5518 	for (who_node = uu_avl_first(who_avl); who_node != NULL;
5519 	    who_node = uu_avl_next(who_avl, who_node)) {
5520 		uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5521 		zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5522 		const char *who_name = who_node->who_perm.who_name;
5523 		int weight = who_type2weight(who_type);
5524 		boolean_t first = B_TRUE;
5525 		deleg_perm_node_t *deleg_node;
5526 
5527 		if (prev_weight != weight) {
5528 			VERIFY3S(weight, >=, 0);
5529 			VERIFY3S(weight, <=, 1);
5530 			(void) printf(sc_title[weight]);
5531 			prev_weight = weight;
5532 		}
5533 
5534 		if (who_name == NULL || strnlen(who_name, 1) == 0)
5535 			(void) printf("\t");
5536 		else
5537 			(void) printf("\t%s ", who_name);
5538 
5539 		for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5540 		    deleg_node = uu_avl_next(avl, deleg_node)) {
5541 			if (first) {
5542 				(void) printf("%s",
5543 				    deleg_node->dpn_perm.dp_name);
5544 				first = B_FALSE;
5545 			} else
5546 				(void) printf(",%s",
5547 				    deleg_node->dpn_perm.dp_name);
5548 		}
5549 
5550 		(void) printf("\n");
5551 	}
5552 }
5553 
5554 static void
print_uge_deleg_perms(uu_avl_t * who_avl,boolean_t local,boolean_t descend,const char * title)5555 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5556     const char *title)
5557 {
5558 	who_perm_node_t *who_node = NULL;
5559 	boolean_t prt_title = B_TRUE;
5560 	uu_avl_walk_t *walk;
5561 
5562 	if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5563 		nomem();
5564 
5565 	while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5566 		const char *who_name = who_node->who_perm.who_name;
5567 		const char *nice_who_name = who_node->who_perm.who_ug_name;
5568 		uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5569 		zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5570 		char delim = ' ';
5571 		deleg_perm_node_t *deleg_node;
5572 		boolean_t prt_who = B_TRUE;
5573 
5574 		for (deleg_node = uu_avl_first(avl);
5575 		    deleg_node != NULL;
5576 		    deleg_node = uu_avl_next(avl, deleg_node)) {
5577 			if (local != deleg_node->dpn_perm.dp_local ||
5578 			    descend != deleg_node->dpn_perm.dp_descend)
5579 				continue;
5580 
5581 			if (prt_who) {
5582 				const char *who = NULL;
5583 				if (prt_title) {
5584 					prt_title = B_FALSE;
5585 					(void) printf(title);
5586 				}
5587 
5588 				switch (who_type) {
5589 				case ZFS_DELEG_USER_SETS:
5590 				case ZFS_DELEG_USER:
5591 					who = gettext("user");
5592 					if (nice_who_name)
5593 						who_name  = nice_who_name;
5594 					break;
5595 				case ZFS_DELEG_GROUP_SETS:
5596 				case ZFS_DELEG_GROUP:
5597 					who = gettext("group");
5598 					if (nice_who_name)
5599 						who_name  = nice_who_name;
5600 					break;
5601 				case ZFS_DELEG_EVERYONE_SETS:
5602 				case ZFS_DELEG_EVERYONE:
5603 					who = gettext("everyone");
5604 					who_name = NULL;
5605 					break;
5606 
5607 				default:
5608 					assert(who != NULL);
5609 				}
5610 
5611 				prt_who = B_FALSE;
5612 				if (who_name == NULL)
5613 					(void) printf("\t%s", who);
5614 				else
5615 					(void) printf("\t%s %s", who, who_name);
5616 			}
5617 
5618 			(void) printf("%c%s", delim,
5619 			    deleg_node->dpn_perm.dp_name);
5620 			delim = ',';
5621 		}
5622 
5623 		if (!prt_who)
5624 			(void) printf("\n");
5625 	}
5626 
5627 	uu_avl_walk_end(walk);
5628 }
5629 
5630 static void
print_fs_perms(fs_perm_set_t * fspset)5631 print_fs_perms(fs_perm_set_t *fspset)
5632 {
5633 	fs_perm_node_t *node = NULL;
5634 	char buf[MAXNAMELEN + 32];
5635 	const char *dsname = buf;
5636 
5637 	for (node = uu_list_first(fspset->fsps_list); node != NULL;
5638 	    node = uu_list_next(fspset->fsps_list, node)) {
5639 		uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5640 		uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5641 		int left = 0;
5642 
5643 		(void) snprintf(buf, sizeof (buf),
5644 		    gettext("---- Permissions on %s "),
5645 		    node->fspn_fsperm.fsp_name);
5646 		(void) printf(dsname);
5647 		left = 70 - strlen(buf);
5648 		while (left-- > 0)
5649 			(void) printf("-");
5650 		(void) printf("\n");
5651 
5652 		print_set_creat_perms(sc_avl);
5653 		print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5654 		    gettext("Local permissions:\n"));
5655 		print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5656 		    gettext("Descendent permissions:\n"));
5657 		print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5658 		    gettext("Local+Descendent permissions:\n"));
5659 	}
5660 }
5661 
5662 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5663 
5664 struct deleg_perms {
5665 	boolean_t un;
5666 	nvlist_t *nvl;
5667 };
5668 
5669 static int
set_deleg_perms(zfs_handle_t * zhp,void * data)5670 set_deleg_perms(zfs_handle_t *zhp, void *data)
5671 {
5672 	struct deleg_perms *perms = (struct deleg_perms *)data;
5673 	zfs_type_t zfs_type = zfs_get_type(zhp);
5674 
5675 	if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5676 		return (0);
5677 
5678 	return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5679 }
5680 
5681 static int
zfs_do_allow_unallow_impl(int argc,char ** argv,boolean_t un)5682 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5683 {
5684 	zfs_handle_t *zhp;
5685 	nvlist_t *perm_nvl = NULL;
5686 	nvlist_t *update_perm_nvl = NULL;
5687 	int error = 1;
5688 	int c;
5689 	struct allow_opts opts = { 0 };
5690 
5691 	const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5692 
5693 	/* check opts */
5694 	while ((c = getopt(argc, argv, optstr)) != -1) {
5695 		switch (c) {
5696 		case 'l':
5697 			opts.local = B_TRUE;
5698 			break;
5699 		case 'd':
5700 			opts.descend = B_TRUE;
5701 			break;
5702 		case 'u':
5703 			opts.user = B_TRUE;
5704 			break;
5705 		case 'g':
5706 			opts.group = B_TRUE;
5707 			break;
5708 		case 'e':
5709 			opts.everyone = B_TRUE;
5710 			break;
5711 		case 's':
5712 			opts.set = B_TRUE;
5713 			break;
5714 		case 'c':
5715 			opts.create = B_TRUE;
5716 			break;
5717 		case 'r':
5718 			opts.recursive = B_TRUE;
5719 			break;
5720 		case ':':
5721 			(void) fprintf(stderr, gettext("missing argument for "
5722 			    "'%c' option\n"), optopt);
5723 			usage(B_FALSE);
5724 			break;
5725 		case 'h':
5726 			opts.prt_usage = B_TRUE;
5727 			break;
5728 		case '?':
5729 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
5730 			    optopt);
5731 			usage(B_FALSE);
5732 		}
5733 	}
5734 
5735 	argc -= optind;
5736 	argv += optind;
5737 
5738 	/* check arguments */
5739 	parse_allow_args(argc, argv, un, &opts);
5740 
5741 	/* try to open the dataset */
5742 	if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5743 	    ZFS_TYPE_VOLUME)) == NULL) {
5744 		(void) fprintf(stderr, "Failed to open dataset: %s\n",
5745 		    opts.dataset);
5746 		return (-1);
5747 	}
5748 
5749 	if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5750 		goto cleanup2;
5751 
5752 	fs_perm_set_init(&fs_perm_set);
5753 	if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5754 		(void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5755 		goto cleanup1;
5756 	}
5757 
5758 	if (opts.prt_perms)
5759 		print_fs_perms(&fs_perm_set);
5760 	else {
5761 		(void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5762 		if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5763 			goto cleanup0;
5764 
5765 		if (un && opts.recursive) {
5766 			struct deleg_perms data = { un, update_perm_nvl };
5767 			if (zfs_iter_filesystems(zhp, set_deleg_perms,
5768 			    &data) != 0)
5769 				goto cleanup0;
5770 		}
5771 	}
5772 
5773 	error = 0;
5774 
5775 cleanup0:
5776 	nvlist_free(perm_nvl);
5777 	nvlist_free(update_perm_nvl);
5778 cleanup1:
5779 	fs_perm_set_fini(&fs_perm_set);
5780 cleanup2:
5781 	zfs_close(zhp);
5782 
5783 	return (error);
5784 }
5785 
5786 static int
zfs_do_allow(int argc,char ** argv)5787 zfs_do_allow(int argc, char **argv)
5788 {
5789 	return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5790 }
5791 
5792 static int
zfs_do_unallow(int argc,char ** argv)5793 zfs_do_unallow(int argc, char **argv)
5794 {
5795 	return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5796 }
5797 
5798 static int
zfs_do_hold_rele_impl(int argc,char ** argv,boolean_t holding)5799 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5800 {
5801 	int errors = 0;
5802 	int i;
5803 	const char *tag;
5804 	boolean_t recursive = B_FALSE;
5805 	const char *opts = holding ? "rt" : "r";
5806 	int c;
5807 
5808 	/* check options */
5809 	while ((c = getopt(argc, argv, opts)) != -1) {
5810 		switch (c) {
5811 		case 'r':
5812 			recursive = B_TRUE;
5813 			break;
5814 		case '?':
5815 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
5816 			    optopt);
5817 			usage(B_FALSE);
5818 		}
5819 	}
5820 
5821 	argc -= optind;
5822 	argv += optind;
5823 
5824 	/* check number of arguments */
5825 	if (argc < 2)
5826 		usage(B_FALSE);
5827 
5828 	tag = argv[0];
5829 	--argc;
5830 	++argv;
5831 
5832 	if (holding && tag[0] == '.') {
5833 		/* tags starting with '.' are reserved for libzfs */
5834 		(void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5835 		usage(B_FALSE);
5836 	}
5837 
5838 	for (i = 0; i < argc; ++i) {
5839 		zfs_handle_t *zhp;
5840 		char parent[ZFS_MAX_DATASET_NAME_LEN];
5841 		const char *delim;
5842 		char *path = argv[i];
5843 
5844 		delim = strchr(path, '@');
5845 		if (delim == NULL) {
5846 			(void) fprintf(stderr,
5847 			    gettext("'%s' is not a snapshot\n"), path);
5848 			++errors;
5849 			continue;
5850 		}
5851 		(void) strncpy(parent, path, delim - path);
5852 		parent[delim - path] = '\0';
5853 
5854 		zhp = zfs_open(g_zfs, parent,
5855 		    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5856 		if (zhp == NULL) {
5857 			++errors;
5858 			continue;
5859 		}
5860 		if (holding) {
5861 			if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5862 				++errors;
5863 		} else {
5864 			if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5865 				++errors;
5866 		}
5867 		zfs_close(zhp);
5868 	}
5869 
5870 	return (errors != 0);
5871 }
5872 
5873 /*
5874  * zfs hold [-r] [-t] <tag> <snap> ...
5875  *
5876  *	-r	Recursively hold
5877  *
5878  * Apply a user-hold with the given tag to the list of snapshots.
5879  */
5880 static int
zfs_do_hold(int argc,char ** argv)5881 zfs_do_hold(int argc, char **argv)
5882 {
5883 	return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5884 }
5885 
5886 /*
5887  * zfs release [-r] <tag> <snap> ...
5888  *
5889  *	-r	Recursively release
5890  *
5891  * Release a user-hold with the given tag from the list of snapshots.
5892  */
5893 static int
zfs_do_release(int argc,char ** argv)5894 zfs_do_release(int argc, char **argv)
5895 {
5896 	return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5897 }
5898 
5899 typedef struct holds_cbdata {
5900 	boolean_t	cb_recursive;
5901 	const char	*cb_snapname;
5902 	nvlist_t	**cb_nvlp;
5903 	size_t		cb_max_namelen;
5904 	size_t		cb_max_taglen;
5905 } holds_cbdata_t;
5906 
5907 #define	STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5908 #define	DATETIME_BUF_LEN (32)
5909 /*
5910  *
5911  */
5912 static void
print_holds(boolean_t scripted,size_t nwidth,size_t tagwidth,nvlist_t * nvl)5913 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5914 {
5915 	int i;
5916 	nvpair_t *nvp = NULL;
5917 	char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5918 	const char *col;
5919 
5920 	if (!scripted) {
5921 		for (i = 0; i < 3; i++) {
5922 			col = gettext(hdr_cols[i]);
5923 			if (i < 2)
5924 				(void) printf("%-*s  ", i ? tagwidth : nwidth,
5925 				    col);
5926 			else
5927 				(void) printf("%s\n", col);
5928 		}
5929 	}
5930 
5931 	while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5932 		char *zname = nvpair_name(nvp);
5933 		nvlist_t *nvl2;
5934 		nvpair_t *nvp2 = NULL;
5935 		(void) nvpair_value_nvlist(nvp, &nvl2);
5936 		while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5937 			char tsbuf[DATETIME_BUF_LEN];
5938 			char *tagname = nvpair_name(nvp2);
5939 			uint64_t val = 0;
5940 			time_t time;
5941 			struct tm t;
5942 
5943 			(void) nvpair_value_uint64(nvp2, &val);
5944 			time = (time_t)val;
5945 			(void) localtime_r(&time, &t);
5946 			(void) strftime(tsbuf, DATETIME_BUF_LEN,
5947 			    gettext(STRFTIME_FMT_STR), &t);
5948 
5949 			if (scripted) {
5950 				(void) printf("%s\t%s\t%s\n", zname,
5951 				    tagname, tsbuf);
5952 			} else {
5953 				(void) printf("%-*s  %-*s  %s\n", nwidth,
5954 				    zname, tagwidth, tagname, tsbuf);
5955 			}
5956 		}
5957 	}
5958 }
5959 
5960 /*
5961  * Generic callback function to list a dataset or snapshot.
5962  */
5963 static int
holds_callback(zfs_handle_t * zhp,void * data)5964 holds_callback(zfs_handle_t *zhp, void *data)
5965 {
5966 	holds_cbdata_t *cbp = data;
5967 	nvlist_t *top_nvl = *cbp->cb_nvlp;
5968 	nvlist_t *nvl = NULL;
5969 	nvpair_t *nvp = NULL;
5970 	const char *zname = zfs_get_name(zhp);
5971 	size_t znamelen = strlen(zname);
5972 
5973 	if (cbp->cb_recursive) {
5974 		const char *snapname;
5975 		char *delim  = strchr(zname, '@');
5976 		if (delim == NULL)
5977 			return (0);
5978 
5979 		snapname = delim + 1;
5980 		if (strcmp(cbp->cb_snapname, snapname))
5981 			return (0);
5982 	}
5983 
5984 	if (zfs_get_holds(zhp, &nvl) != 0)
5985 		return (-1);
5986 
5987 	if (znamelen > cbp->cb_max_namelen)
5988 		cbp->cb_max_namelen  = znamelen;
5989 
5990 	while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5991 		const char *tag = nvpair_name(nvp);
5992 		size_t taglen = strlen(tag);
5993 		if (taglen > cbp->cb_max_taglen)
5994 			cbp->cb_max_taglen  = taglen;
5995 	}
5996 
5997 	return (nvlist_add_nvlist(top_nvl, zname, nvl));
5998 }
5999 
6000 /*
6001  * zfs holds [-r] <snap> ...
6002  *
6003  *	-r	Recursively hold
6004  */
6005 static int
zfs_do_holds(int argc,char ** argv)6006 zfs_do_holds(int argc, char **argv)
6007 {
6008 	int errors = 0;
6009 	int c;
6010 	int i;
6011 	boolean_t scripted = B_FALSE;
6012 	boolean_t recursive = B_FALSE;
6013 	const char *opts = "rH";
6014 	nvlist_t *nvl;
6015 
6016 	int types = ZFS_TYPE_SNAPSHOT;
6017 	holds_cbdata_t cb = { 0 };
6018 
6019 	int limit = 0;
6020 	int ret = 0;
6021 	int flags = 0;
6022 
6023 	/* check options */
6024 	while ((c = getopt(argc, argv, opts)) != -1) {
6025 		switch (c) {
6026 		case 'r':
6027 			recursive = B_TRUE;
6028 			break;
6029 		case 'H':
6030 			scripted = B_TRUE;
6031 			break;
6032 		case '?':
6033 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
6034 			    optopt);
6035 			usage(B_FALSE);
6036 		}
6037 	}
6038 
6039 	if (recursive) {
6040 		types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
6041 		flags |= ZFS_ITER_RECURSE;
6042 	}
6043 
6044 	argc -= optind;
6045 	argv += optind;
6046 
6047 	/* check number of arguments */
6048 	if (argc < 1)
6049 		usage(B_FALSE);
6050 
6051 	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
6052 		nomem();
6053 
6054 	for (i = 0; i < argc; ++i) {
6055 		char *snapshot = argv[i];
6056 		const char *delim;
6057 		const char *snapname;
6058 
6059 		delim = strchr(snapshot, '@');
6060 		if (delim == NULL) {
6061 			(void) fprintf(stderr,
6062 			    gettext("'%s' is not a snapshot\n"), snapshot);
6063 			++errors;
6064 			continue;
6065 		}
6066 		snapname = delim + 1;
6067 		if (recursive)
6068 			snapshot[delim - snapshot] = '\0';
6069 
6070 		cb.cb_recursive = recursive;
6071 		cb.cb_snapname = snapname;
6072 		cb.cb_nvlp = &nvl;
6073 
6074 		/*
6075 		 *  1. collect holds data, set format options
6076 		 */
6077 		ret = zfs_for_each(1, &argv[i], flags, types, NULL, NULL, limit,
6078 		    holds_callback, &cb);
6079 		if (ret != 0)
6080 			++errors;
6081 	}
6082 
6083 	/*
6084 	 *  2. print holds data
6085 	 */
6086 	print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
6087 
6088 	nvlist_free(nvl);
6089 
6090 	return (0 != errors);
6091 }
6092 
6093 #define	CHECK_SPINNER 30
6094 #define	SPINNER_TIME 3		/* seconds */
6095 #define	MOUNT_TIME 1		/* seconds */
6096 
6097 typedef struct get_all_state {
6098 	boolean_t	ga_verbose;
6099 	get_all_cb_t	*ga_cbp;
6100 } get_all_state_t;
6101 
6102 static int
get_one_dataset(zfs_handle_t * zhp,void * data)6103 get_one_dataset(zfs_handle_t *zhp, void *data)
6104 {
6105 	static char *spin[] = { "-", "\\", "|", "/" };
6106 	static int spinval = 0;
6107 	static int spincheck = 0;
6108 	static time_t last_spin_time = (time_t)0;
6109 	get_all_state_t *state = data;
6110 	zfs_type_t type = zfs_get_type(zhp);
6111 
6112 	if (state->ga_verbose) {
6113 		if (--spincheck < 0) {
6114 			time_t now = time(NULL);
6115 			if (last_spin_time + SPINNER_TIME < now) {
6116 				update_progress(spin[spinval++ % 4]);
6117 				last_spin_time = now;
6118 			}
6119 			spincheck = CHECK_SPINNER;
6120 		}
6121 	}
6122 
6123 	/*
6124 	 * Interate over any nested datasets.
6125 	 */
6126 	if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
6127 		zfs_close(zhp);
6128 		return (1);
6129 	}
6130 
6131 	/*
6132 	 * Skip any datasets whose type does not match.
6133 	 */
6134 	if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
6135 		zfs_close(zhp);
6136 		return (0);
6137 	}
6138 	libzfs_add_handle(state->ga_cbp, zhp);
6139 	assert(state->ga_cbp->cb_used <= state->ga_cbp->cb_alloc);
6140 
6141 	return (0);
6142 }
6143 
6144 static void
get_all_datasets(get_all_cb_t * cbp,boolean_t verbose)6145 get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
6146 {
6147 	get_all_state_t state = {
6148 	    .ga_verbose = verbose,
6149 	    .ga_cbp = cbp
6150 	};
6151 
6152 	if (verbose)
6153 		set_progress_header(gettext("Reading ZFS config"));
6154 	(void) zfs_iter_root(g_zfs, get_one_dataset, &state);
6155 
6156 	if (verbose)
6157 		finish_progress(gettext("done."));
6158 }
6159 
6160 /*
6161  * Generic callback for sharing or mounting filesystems.  Because the code is so
6162  * similar, we have a common function with an extra parameter to determine which
6163  * mode we are using.
6164  */
6165 typedef enum { OP_SHARE, OP_MOUNT } share_mount_op_t;
6166 
6167 typedef struct share_mount_state {
6168 	share_mount_op_t	sm_op;
6169 	boolean_t	sm_verbose;
6170 	int	sm_flags;
6171 	char	*sm_options;
6172 	char	*sm_proto; /* only valid for OP_SHARE */
6173 	mutex_t	sm_lock; /* protects the remaining fields */
6174 	uint_t	sm_total; /* number of filesystems to process */
6175 	uint_t	sm_done; /* number of filesystems processed */
6176 	int	sm_status; /* -1 if any of the share/mount operations failed */
6177 } share_mount_state_t;
6178 
6179 /*
6180  * Share or mount a dataset.
6181  */
6182 static int
share_mount_one(zfs_handle_t * zhp,int op,int flags,char * protocol,boolean_t explicit,const char * options)6183 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
6184     boolean_t explicit, const char *options)
6185 {
6186 	char mountpoint[ZFS_MAXPROPLEN];
6187 	char shareopts[ZFS_MAXPROPLEN];
6188 	char smbshareopts[ZFS_MAXPROPLEN];
6189 	const char *cmdname = op == OP_SHARE ? "share" : "mount";
6190 	struct mnttab mnt;
6191 	uint64_t zoned, canmount;
6192 	boolean_t shared_nfs, shared_smb;
6193 
6194 	assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
6195 
6196 	/*
6197 	 * Check to make sure we can mount/share this dataset.  If we
6198 	 * are in the global zone and the filesystem is exported to a
6199 	 * local zone, or if we are in a local zone and the
6200 	 * filesystem is not exported, then it is an error.
6201 	 */
6202 	zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
6203 
6204 	if (zoned && getzoneid() == GLOBAL_ZONEID) {
6205 		if (!explicit)
6206 			return (0);
6207 
6208 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6209 		    "dataset is exported to a local zone\n"), cmdname,
6210 		    zfs_get_name(zhp));
6211 		return (1);
6212 
6213 	} else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
6214 		if (!explicit)
6215 			return (0);
6216 
6217 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6218 		    "permission denied\n"), cmdname,
6219 		    zfs_get_name(zhp));
6220 		return (1);
6221 	}
6222 
6223 	/*
6224 	 * Ignore any filesystems which don't apply to us. This
6225 	 * includes those with a legacy mountpoint, or those with
6226 	 * legacy share options.
6227 	 */
6228 	verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6229 	    sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
6230 	verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
6231 	    sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
6232 	verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
6233 	    sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
6234 
6235 	if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
6236 	    strcmp(smbshareopts, "off") == 0) {
6237 		if (!explicit)
6238 			return (0);
6239 
6240 		(void) fprintf(stderr, gettext("cannot share '%s': "
6241 		    "legacy share\n"), zfs_get_name(zhp));
6242 		(void) fprintf(stderr, gettext("use share(8) to "
6243 		    "share this filesystem, or set "
6244 		    "sharenfs property on\n"));
6245 		return (1);
6246 	}
6247 
6248 	/*
6249 	 * We cannot share or mount legacy filesystems. If the
6250 	 * shareopts is non-legacy but the mountpoint is legacy, we
6251 	 * treat it as a legacy share.
6252 	 */
6253 	if (strcmp(mountpoint, "legacy") == 0) {
6254 		if (!explicit)
6255 			return (0);
6256 
6257 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6258 		    "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
6259 		(void) fprintf(stderr, gettext("use %s(8) to "
6260 		    "%s this filesystem\n"), cmdname, cmdname);
6261 		return (1);
6262 	}
6263 
6264 	if (strcmp(mountpoint, "none") == 0) {
6265 		if (!explicit)
6266 			return (0);
6267 
6268 		(void) fprintf(stderr, gettext("cannot %s '%s': no "
6269 		    "mountpoint set\n"), cmdname, zfs_get_name(zhp));
6270 		return (1);
6271 	}
6272 
6273 	/*
6274 	 * canmount	explicit	outcome
6275 	 * on		no		pass through
6276 	 * on		yes		pass through
6277 	 * off		no		return 0
6278 	 * off		yes		display error, return 1
6279 	 * noauto	no		return 0
6280 	 * noauto	yes		pass through
6281 	 */
6282 	canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6283 	if (canmount == ZFS_CANMOUNT_OFF) {
6284 		if (!explicit)
6285 			return (0);
6286 
6287 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6288 		    "'canmount' property is set to 'off'\n"), cmdname,
6289 		    zfs_get_name(zhp));
6290 		return (1);
6291 	} else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6292 		return (0);
6293 	}
6294 
6295 	/*
6296 	 * If this filesystem is encrypted and does not have
6297 	 * a loaded key, we can not mount it.
6298 	 */
6299 	if ((flags & MS_CRYPT) == 0 &&
6300 	    zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF &&
6301 	    zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
6302 	    ZFS_KEYSTATUS_UNAVAILABLE) {
6303 		if (!explicit)
6304 			return (0);
6305 
6306 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6307 		    "encryption key not loaded\n"), cmdname, zfs_get_name(zhp));
6308 		return (1);
6309 	}
6310 
6311 	/*
6312 	 * If this filesystem is inconsistent and has a receive resume
6313 	 * token, we can not mount it.
6314 	 */
6315 	if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6316 	    zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6317 	    NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6318 		if (!explicit)
6319 			return (0);
6320 
6321 		(void) fprintf(stderr, gettext("cannot %s '%s': "
6322 		    "Contains partially-completed state from "
6323 		    "\"zfs receive -s\", which can be resumed with "
6324 		    "\"zfs send -t\"\n"),
6325 		    cmdname, zfs_get_name(zhp));
6326 		return (1);
6327 	}
6328 
6329 	/*
6330 	 * At this point, we have verified that the mountpoint and/or
6331 	 * shareopts are appropriate for auto management. If the
6332 	 * filesystem is already mounted or shared, return (failing
6333 	 * for explicit requests); otherwise mount or share the
6334 	 * filesystem.
6335 	 */
6336 	switch (op) {
6337 	case OP_SHARE:
6338 
6339 		shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6340 		shared_smb = zfs_is_shared_smb(zhp, NULL);
6341 
6342 		if ((shared_nfs && shared_smb) ||
6343 		    (shared_nfs && strcmp(shareopts, "on") == 0 &&
6344 		    strcmp(smbshareopts, "off") == 0) ||
6345 		    (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6346 		    strcmp(shareopts, "off") == 0)) {
6347 			if (!explicit)
6348 				return (0);
6349 
6350 			(void) fprintf(stderr, gettext("cannot share "
6351 			    "'%s': filesystem already shared\n"),
6352 			    zfs_get_name(zhp));
6353 			return (1);
6354 		}
6355 
6356 		if (!zfs_is_mounted(zhp, NULL) &&
6357 		    zfs_mount(zhp, NULL, flags) != 0)
6358 			return (1);
6359 
6360 		if (protocol == NULL) {
6361 			if (zfs_shareall(zhp) != 0)
6362 				return (1);
6363 		} else if (strcmp(protocol, "nfs") == 0) {
6364 			if (zfs_share_nfs(zhp))
6365 				return (1);
6366 		} else if (strcmp(protocol, "smb") == 0) {
6367 			if (zfs_share_smb(zhp))
6368 				return (1);
6369 		} else {
6370 			(void) fprintf(stderr, gettext("cannot share "
6371 			    "'%s': invalid share type '%s' "
6372 			    "specified\n"),
6373 			    zfs_get_name(zhp), protocol);
6374 			return (1);
6375 		}
6376 
6377 		break;
6378 
6379 	case OP_MOUNT:
6380 		if (options == NULL)
6381 			mnt.mnt_mntopts = "";
6382 		else
6383 			mnt.mnt_mntopts = (char *)options;
6384 
6385 		if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6386 		    zfs_is_mounted(zhp, NULL)) {
6387 			if (!explicit)
6388 				return (0);
6389 
6390 			(void) fprintf(stderr, gettext("cannot mount "
6391 			    "'%s': filesystem already mounted\n"),
6392 			    zfs_get_name(zhp));
6393 			return (1);
6394 		}
6395 
6396 		if (zfs_mount(zhp, options, flags) != 0)
6397 			return (1);
6398 		break;
6399 	}
6400 
6401 	return (0);
6402 }
6403 
6404 /*
6405  * Reports progress in the form "(current/total)".  Not thread-safe.
6406  */
6407 static void
report_mount_progress(int current,int total)6408 report_mount_progress(int current, int total)
6409 {
6410 	static time_t last_progress_time = 0;
6411 	time_t now = time(NULL);
6412 	char info[32];
6413 
6414 	/* display header if we're here for the first time */
6415 	if (current == 1) {
6416 		set_progress_header(gettext("Mounting ZFS filesystems"));
6417 	} else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6418 		/* too soon to report again */
6419 		return;
6420 	}
6421 
6422 	last_progress_time = now;
6423 
6424 	(void) sprintf(info, "(%d/%d)", current, total);
6425 
6426 	if (current == total)
6427 		finish_progress(info);
6428 	else
6429 		update_progress(info);
6430 }
6431 
6432 /*
6433  * zfs_foreach_mountpoint() callback that mounts or shares one filesystem and
6434  * updates the progress meter.
6435  */
6436 static int
share_mount_one_cb(zfs_handle_t * zhp,void * arg)6437 share_mount_one_cb(zfs_handle_t *zhp, void *arg)
6438 {
6439 	share_mount_state_t *sms = arg;
6440 	int ret;
6441 
6442 	ret = share_mount_one(zhp, sms->sm_op, sms->sm_flags, sms->sm_proto,
6443 	    B_FALSE, sms->sm_options);
6444 
6445 	mutex_enter(&sms->sm_lock);
6446 	if (ret != 0)
6447 		sms->sm_status = ret;
6448 	sms->sm_done++;
6449 	if (sms->sm_verbose)
6450 		report_mount_progress(sms->sm_done, sms->sm_total);
6451 	mutex_exit(&sms->sm_lock);
6452 	return (ret);
6453 }
6454 
6455 static void
append_options(char * mntopts,char * newopts)6456 append_options(char *mntopts, char *newopts)
6457 {
6458 	int len = strlen(mntopts);
6459 
6460 	/* original length plus new string to append plus 1 for the comma */
6461 	if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6462 		(void) fprintf(stderr, gettext("the opts argument for "
6463 		    "'%c' option is too long (more than %d chars)\n"),
6464 		    "-o", MNT_LINE_MAX);
6465 		usage(B_FALSE);
6466 	}
6467 
6468 	if (*mntopts)
6469 		mntopts[len++] = ',';
6470 
6471 	(void) strcpy(&mntopts[len], newopts);
6472 }
6473 
6474 static int
share_mount(int op,int argc,char ** argv)6475 share_mount(int op, int argc, char **argv)
6476 {
6477 	int do_all = 0;
6478 	boolean_t verbose = B_FALSE;
6479 	int c, ret = 0;
6480 	char *options = NULL;
6481 	int flags = 0;
6482 
6483 	/* check options */
6484 	while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:O" : "al"))
6485 	    != -1) {
6486 		switch (c) {
6487 		case 'a':
6488 			do_all = 1;
6489 			break;
6490 		case 'v':
6491 			verbose = B_TRUE;
6492 			break;
6493 		case 'l':
6494 			flags |= MS_CRYPT;
6495 			break;
6496 		case 'o':
6497 			if (*optarg == '\0') {
6498 				(void) fprintf(stderr, gettext("empty mount "
6499 				    "options (-o) specified\n"));
6500 				usage(B_FALSE);
6501 			}
6502 
6503 			if (options == NULL)
6504 				options = safe_malloc(MNT_LINE_MAX + 1);
6505 
6506 			/* option validation is done later */
6507 			append_options(options, optarg);
6508 			break;
6509 
6510 		case 'O':
6511 			flags |= MS_OVERLAY;
6512 			break;
6513 		case ':':
6514 			(void) fprintf(stderr, gettext("missing argument for "
6515 			    "'%c' option\n"), optopt);
6516 			usage(B_FALSE);
6517 			break;
6518 		case '?':
6519 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
6520 			    optopt);
6521 			usage(B_FALSE);
6522 		}
6523 	}
6524 
6525 	argc -= optind;
6526 	argv += optind;
6527 
6528 	/* check number of arguments */
6529 	if (do_all) {
6530 		char *protocol = NULL;
6531 
6532 		if (op == OP_SHARE && argc > 0) {
6533 			if (strcmp(argv[0], "nfs") != 0 &&
6534 			    strcmp(argv[0], "smb") != 0) {
6535 				(void) fprintf(stderr, gettext("share type "
6536 				    "must be 'nfs' or 'smb'\n"));
6537 				usage(B_FALSE);
6538 			}
6539 			protocol = argv[0];
6540 			argc--;
6541 			argv++;
6542 		}
6543 
6544 		if (argc != 0) {
6545 			(void) fprintf(stderr, gettext("too many arguments\n"));
6546 			usage(B_FALSE);
6547 		}
6548 
6549 		start_progress_timer();
6550 		get_all_cb_t cb = { 0 };
6551 		get_all_datasets(&cb, verbose);
6552 
6553 		if (cb.cb_used == 0)
6554 			return (0);
6555 
6556 		if (op == OP_SHARE) {
6557 			sa_init_selective_arg_t sharearg;
6558 			sharearg.zhandle_arr = cb.cb_handles;
6559 			sharearg.zhandle_len = cb.cb_used;
6560 			if ((ret = zfs_init_libshare_arg(g_zfs,
6561 			    SA_INIT_SHARE_API_SELECTIVE, &sharearg)) != SA_OK) {
6562 				(void) fprintf(stderr, gettext(
6563 				    "Could not initialize libshare, %d"), ret);
6564 				return (ret);
6565 			}
6566 		}
6567 
6568 		share_mount_state_t share_mount_state = { 0 };
6569 		share_mount_state.sm_op = op;
6570 		share_mount_state.sm_verbose = verbose;
6571 		share_mount_state.sm_flags = flags;
6572 		share_mount_state.sm_options = options;
6573 		share_mount_state.sm_proto = protocol;
6574 		share_mount_state.sm_total = cb.cb_used;
6575 		(void) mutex_init(&share_mount_state.sm_lock,
6576 		    LOCK_NORMAL | LOCK_ERRORCHECK, NULL);
6577 		/*
6578 		 * libshare isn't mt-safe, so only do the operation in parallel
6579 		 * if we're mounting.
6580 		 */
6581 		zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
6582 		    share_mount_one_cb, &share_mount_state, op == OP_MOUNT);
6583 		ret = share_mount_state.sm_status;
6584 
6585 		for (int i = 0; i < cb.cb_used; i++)
6586 			zfs_close(cb.cb_handles[i]);
6587 		free(cb.cb_handles);
6588 	} else if (argc == 0) {
6589 		struct mnttab entry;
6590 
6591 		if ((op == OP_SHARE) || (options != NULL)) {
6592 			(void) fprintf(stderr, gettext("missing filesystem "
6593 			    "argument (specify -a for all)\n"));
6594 			usage(B_FALSE);
6595 		}
6596 
6597 		/*
6598 		 * When mount is given no arguments, go through /etc/mnttab and
6599 		 * display any active ZFS mounts.  We hide any snapshots, since
6600 		 * they are controlled automatically.
6601 		 */
6602 		rewind(mnttab_file);
6603 		while (getmntent(mnttab_file, &entry) == 0) {
6604 			if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6605 			    strchr(entry.mnt_special, '@') != NULL)
6606 				continue;
6607 
6608 			(void) printf("%-30s  %s\n", entry.mnt_special,
6609 			    entry.mnt_mountp);
6610 		}
6611 
6612 	} else {
6613 		zfs_handle_t *zhp;
6614 
6615 		if (argc > 1) {
6616 			(void) fprintf(stderr,
6617 			    gettext("too many arguments\n"));
6618 			usage(B_FALSE);
6619 		}
6620 
6621 		if ((zhp = zfs_open(g_zfs, argv[0],
6622 		    ZFS_TYPE_FILESYSTEM)) == NULL) {
6623 			ret = 1;
6624 		} else {
6625 			ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6626 			    options);
6627 			zfs_close(zhp);
6628 		}
6629 	}
6630 
6631 	return (ret);
6632 }
6633 
6634 /*
6635  * zfs mount -a [nfs]
6636  * zfs mount filesystem
6637  *
6638  * Mount all filesystems, or mount the given filesystem.
6639  */
6640 static int
zfs_do_mount(int argc,char ** argv)6641 zfs_do_mount(int argc, char **argv)
6642 {
6643 	return (share_mount(OP_MOUNT, argc, argv));
6644 }
6645 
6646 /*
6647  * zfs share -a [nfs | smb]
6648  * zfs share filesystem
6649  *
6650  * Share all filesystems, or share the given filesystem.
6651  */
6652 static int
zfs_do_share(int argc,char ** argv)6653 zfs_do_share(int argc, char **argv)
6654 {
6655 	return (share_mount(OP_SHARE, argc, argv));
6656 }
6657 
6658 typedef struct unshare_unmount_node {
6659 	zfs_handle_t	*un_zhp;
6660 	char		*un_mountp;
6661 	uu_avl_node_t	un_avlnode;
6662 } unshare_unmount_node_t;
6663 
6664 /* ARGSUSED */
6665 static int
unshare_unmount_compare(const void * larg,const void * rarg,void * unused)6666 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6667 {
6668 	const unshare_unmount_node_t *l = larg;
6669 	const unshare_unmount_node_t *r = rarg;
6670 
6671 	return (strcmp(l->un_mountp, r->un_mountp));
6672 }
6673 
6674 /*
6675  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6676  * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6677  * and unmount it appropriately.
6678  */
6679 static int
unshare_unmount_path(int op,char * path,int flags,boolean_t is_manual)6680 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6681 {
6682 	zfs_handle_t *zhp;
6683 	int ret = 0;
6684 	struct stat64 statbuf;
6685 	struct extmnttab entry;
6686 	const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6687 	ino_t path_inode;
6688 
6689 	/*
6690 	 * Search for the path in /etc/mnttab.  Rather than looking for the
6691 	 * specific path, which can be fooled by non-standard paths (i.e. ".."
6692 	 * or "//"), we stat() the path and search for the corresponding
6693 	 * (major,minor) device pair.
6694 	 */
6695 	if (stat64(path, &statbuf) != 0) {
6696 		(void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6697 		    cmdname, path, strerror(errno));
6698 		return (1);
6699 	}
6700 	path_inode = statbuf.st_ino;
6701 
6702 	/*
6703 	 * Search for the given (major,minor) pair in the mount table.
6704 	 */
6705 	rewind(mnttab_file);
6706 	while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6707 		if (entry.mnt_major == major(statbuf.st_dev) &&
6708 		    entry.mnt_minor == minor(statbuf.st_dev))
6709 			break;
6710 	}
6711 	if (ret != 0) {
6712 		if (op == OP_SHARE) {
6713 			(void) fprintf(stderr, gettext("cannot %s '%s': not "
6714 			    "currently mounted\n"), cmdname, path);
6715 			return (1);
6716 		}
6717 		(void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6718 		    path);
6719 		if ((ret = umount2(path, flags)) != 0)
6720 			(void) fprintf(stderr, gettext("%s: %s\n"), path,
6721 			    strerror(errno));
6722 		return (ret != 0);
6723 	}
6724 
6725 	if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6726 		(void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6727 		    "filesystem\n"), cmdname, path);
6728 		return (1);
6729 	}
6730 
6731 	if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6732 	    ZFS_TYPE_FILESYSTEM)) == NULL)
6733 		return (1);
6734 
6735 	ret = 1;
6736 	if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6737 		(void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6738 		    cmdname, path, strerror(errno));
6739 		goto out;
6740 	} else if (statbuf.st_ino != path_inode) {
6741 		(void) fprintf(stderr, gettext("cannot "
6742 		    "%s '%s': not a mountpoint\n"), cmdname, path);
6743 		goto out;
6744 	}
6745 
6746 	if (op == OP_SHARE) {
6747 		char nfs_mnt_prop[ZFS_MAXPROPLEN];
6748 		char smbshare_prop[ZFS_MAXPROPLEN];
6749 
6750 		verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6751 		    sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6752 		verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6753 		    sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6754 
6755 		if (strcmp(nfs_mnt_prop, "off") == 0 &&
6756 		    strcmp(smbshare_prop, "off") == 0) {
6757 			(void) fprintf(stderr, gettext("cannot unshare "
6758 			    "'%s': legacy share\n"), path);
6759 			(void) fprintf(stderr, gettext("use "
6760 			    "unshare(8) to unshare this filesystem\n"));
6761 		} else if (!zfs_is_shared(zhp)) {
6762 			(void) fprintf(stderr, gettext("cannot unshare '%s': "
6763 			    "not currently shared\n"), path);
6764 		} else {
6765 			ret = zfs_unshareall_bypath(zhp, path);
6766 		}
6767 	} else {
6768 		char mtpt_prop[ZFS_MAXPROPLEN];
6769 
6770 		verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6771 		    sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6772 
6773 		if (is_manual) {
6774 			ret = zfs_unmount(zhp, NULL, flags);
6775 		} else if (strcmp(mtpt_prop, "legacy") == 0) {
6776 			(void) fprintf(stderr, gettext("cannot unmount "
6777 			    "'%s': legacy mountpoint\n"),
6778 			    zfs_get_name(zhp));
6779 			(void) fprintf(stderr, gettext("use umount(8) "
6780 			    "to unmount this filesystem\n"));
6781 		} else {
6782 			ret = zfs_unmountall(zhp, flags);
6783 		}
6784 	}
6785 
6786 out:
6787 	zfs_close(zhp);
6788 
6789 	return (ret != 0);
6790 }
6791 
6792 /*
6793  * Generic callback for unsharing or unmounting a filesystem.
6794  */
6795 static int
unshare_unmount(int op,int argc,char ** argv)6796 unshare_unmount(int op, int argc, char **argv)
6797 {
6798 	int do_all = 0;
6799 	int flags = 0;
6800 	int ret = 0;
6801 	int c;
6802 	zfs_handle_t *zhp;
6803 	char nfs_mnt_prop[ZFS_MAXPROPLEN];
6804 	char sharesmb[ZFS_MAXPROPLEN];
6805 
6806 	/* check options */
6807 	while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6808 		switch (c) {
6809 		case 'a':
6810 			do_all = 1;
6811 			break;
6812 		case 'f':
6813 			flags = MS_FORCE;
6814 			break;
6815 		case '?':
6816 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
6817 			    optopt);
6818 			usage(B_FALSE);
6819 		}
6820 	}
6821 
6822 	argc -= optind;
6823 	argv += optind;
6824 
6825 	if (do_all) {
6826 		/*
6827 		 * We could make use of zfs_for_each() to walk all datasets in
6828 		 * the system, but this would be very inefficient, especially
6829 		 * since we would have to linearly search /etc/mnttab for each
6830 		 * one.  Instead, do one pass through /etc/mnttab looking for
6831 		 * zfs entries and call zfs_unmount() for each one.
6832 		 *
6833 		 * Things get a little tricky if the administrator has created
6834 		 * mountpoints beneath other ZFS filesystems.  In this case, we
6835 		 * have to unmount the deepest filesystems first.  To accomplish
6836 		 * this, we place all the mountpoints in an AVL tree sorted by
6837 		 * the special type (dataset name), and walk the result in
6838 		 * reverse to make sure to get any snapshots first.
6839 		 */
6840 		struct mnttab entry;
6841 		uu_avl_pool_t *pool;
6842 		uu_avl_t *tree = NULL;
6843 		unshare_unmount_node_t *node;
6844 		uu_avl_index_t idx;
6845 		uu_avl_walk_t *walk;
6846 
6847 		if (argc != 0) {
6848 			(void) fprintf(stderr, gettext("too many arguments\n"));
6849 			usage(B_FALSE);
6850 		}
6851 
6852 		if (((pool = uu_avl_pool_create("unmount_pool",
6853 		    sizeof (unshare_unmount_node_t),
6854 		    offsetof(unshare_unmount_node_t, un_avlnode),
6855 		    unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6856 		    ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6857 			nomem();
6858 
6859 		rewind(mnttab_file);
6860 		while (getmntent(mnttab_file, &entry) == 0) {
6861 
6862 			/* ignore non-ZFS entries */
6863 			if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6864 				continue;
6865 
6866 			/* ignore snapshots */
6867 			if (strchr(entry.mnt_special, '@') != NULL)
6868 				continue;
6869 
6870 			if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6871 			    ZFS_TYPE_FILESYSTEM)) == NULL) {
6872 				ret = 1;
6873 				continue;
6874 			}
6875 
6876 			/*
6877 			 * Ignore datasets that are excluded/restricted by
6878 			 * parent pool name.
6879 			 */
6880 			if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
6881 				zfs_close(zhp);
6882 				continue;
6883 			}
6884 
6885 			switch (op) {
6886 			case OP_SHARE:
6887 				verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6888 				    nfs_mnt_prop,
6889 				    sizeof (nfs_mnt_prop),
6890 				    NULL, NULL, 0, B_FALSE) == 0);
6891 				if (strcmp(nfs_mnt_prop, "off") != 0)
6892 					break;
6893 				verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6894 				    nfs_mnt_prop,
6895 				    sizeof (nfs_mnt_prop),
6896 				    NULL, NULL, 0, B_FALSE) == 0);
6897 				if (strcmp(nfs_mnt_prop, "off") == 0)
6898 					continue;
6899 				break;
6900 			case OP_MOUNT:
6901 				/* Ignore legacy mounts */
6902 				verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6903 				    nfs_mnt_prop,
6904 				    sizeof (nfs_mnt_prop),
6905 				    NULL, NULL, 0, B_FALSE) == 0);
6906 				if (strcmp(nfs_mnt_prop, "legacy") == 0)
6907 					continue;
6908 				/* Ignore canmount=noauto mounts */
6909 				if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6910 				    ZFS_CANMOUNT_NOAUTO)
6911 					continue;
6912 			default:
6913 				break;
6914 			}
6915 
6916 			node = safe_malloc(sizeof (unshare_unmount_node_t));
6917 			node->un_zhp = zhp;
6918 			node->un_mountp = safe_strdup(entry.mnt_mountp);
6919 
6920 			uu_avl_node_init(node, &node->un_avlnode, pool);
6921 
6922 			if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6923 				uu_avl_insert(tree, node, idx);
6924 			} else {
6925 				zfs_close(node->un_zhp);
6926 				free(node->un_mountp);
6927 				free(node);
6928 			}
6929 		}
6930 
6931 		/*
6932 		 * Initialize libshare SA_INIT_SHARE_API_SELECTIVE here
6933 		 * to avoid unnecessary load/unload of the libshare API
6934 		 * per shared dataset downstream.
6935 		 */
6936 		if (op == OP_SHARE) {
6937 			get_all_cb_t dslist = { 0 };
6938 			get_all_datasets(&dslist, B_FALSE);
6939 
6940 			if (dslist.cb_used != 0) {
6941 				sa_init_selective_arg_t sharearg;
6942 				sharearg.zhandle_arr = dslist.cb_handles;
6943 				sharearg.zhandle_len = dslist.cb_used;
6944 				if ((ret = zfs_init_libshare_arg(g_zfs,
6945 				    SA_INIT_SHARE_API_SELECTIVE, &sharearg)) !=
6946 				    SA_OK) {
6947 					(void) fprintf(stderr, gettext(
6948 					    "Could not initialize libshare, "
6949 					    "%d"), ret);
6950 					return (1);
6951 				}
6952 			}
6953 		}
6954 
6955 		/*
6956 		 * Walk the AVL tree in reverse, unmounting each filesystem and
6957 		 * removing it from the AVL tree in the process.
6958 		 */
6959 		if ((walk = uu_avl_walk_start(tree,
6960 		    UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6961 			nomem();
6962 
6963 		while ((node = uu_avl_walk_next(walk)) != NULL) {
6964 			uu_avl_remove(tree, node);
6965 
6966 			switch (op) {
6967 			case OP_SHARE:
6968 				if (zfs_unshareall_bypath(node->un_zhp,
6969 				    node->un_mountp) != 0)
6970 					ret = 1;
6971 				break;
6972 
6973 			case OP_MOUNT:
6974 				if (zfs_unmount(node->un_zhp,
6975 				    node->un_mountp, flags) != 0)
6976 					ret = 1;
6977 				break;
6978 			}
6979 
6980 			zfs_close(node->un_zhp);
6981 			free(node->un_mountp);
6982 			free(node);
6983 		}
6984 
6985 		uu_avl_walk_end(walk);
6986 		uu_avl_destroy(tree);
6987 		uu_avl_pool_destroy(pool);
6988 
6989 	} else {
6990 		if (argc != 1) {
6991 			if (argc == 0)
6992 				(void) fprintf(stderr,
6993 				    gettext("missing filesystem argument\n"));
6994 			else
6995 				(void) fprintf(stderr,
6996 				    gettext("too many arguments\n"));
6997 			usage(B_FALSE);
6998 		}
6999 
7000 		/*
7001 		 * We have an argument, but it may be a full path or a ZFS
7002 		 * filesystem.  Pass full paths off to unmount_path() (shared by
7003 		 * manual_unmount), otherwise open the filesystem and pass to
7004 		 * zfs_unmount().
7005 		 */
7006 		if (argv[0][0] == '/')
7007 			return (unshare_unmount_path(op, argv[0],
7008 			    flags, B_FALSE));
7009 
7010 		if ((zhp = zfs_open(g_zfs, argv[0],
7011 		    ZFS_TYPE_FILESYSTEM)) == NULL)
7012 			return (1);
7013 
7014 		verify(zfs_prop_get(zhp, op == OP_SHARE ?
7015 		    ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
7016 		    nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
7017 		    NULL, 0, B_FALSE) == 0);
7018 
7019 		switch (op) {
7020 		case OP_SHARE:
7021 			verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
7022 			    nfs_mnt_prop,
7023 			    sizeof (nfs_mnt_prop),
7024 			    NULL, NULL, 0, B_FALSE) == 0);
7025 			verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
7026 			    sharesmb, sizeof (sharesmb), NULL, NULL,
7027 			    0, B_FALSE) == 0);
7028 
7029 			if (strcmp(nfs_mnt_prop, "off") == 0 &&
7030 			    strcmp(sharesmb, "off") == 0) {
7031 				(void) fprintf(stderr, gettext("cannot "
7032 				    "unshare '%s': legacy share\n"),
7033 				    zfs_get_name(zhp));
7034 				(void) fprintf(stderr, gettext("use "
7035 				    "unshare(8) to unshare this "
7036 				    "filesystem\n"));
7037 				ret = 1;
7038 			} else if (!zfs_is_shared(zhp)) {
7039 				(void) fprintf(stderr, gettext("cannot "
7040 				    "unshare '%s': not currently "
7041 				    "shared\n"), zfs_get_name(zhp));
7042 				ret = 1;
7043 			} else if (zfs_unshareall(zhp) != 0) {
7044 				ret = 1;
7045 			}
7046 			break;
7047 
7048 		case OP_MOUNT:
7049 			if (strcmp(nfs_mnt_prop, "legacy") == 0) {
7050 				(void) fprintf(stderr, gettext("cannot "
7051 				    "unmount '%s': legacy "
7052 				    "mountpoint\n"), zfs_get_name(zhp));
7053 				(void) fprintf(stderr, gettext("use "
7054 				    "umount(8) to unmount this "
7055 				    "filesystem\n"));
7056 				ret = 1;
7057 			} else if (!zfs_is_mounted(zhp, NULL)) {
7058 				(void) fprintf(stderr, gettext("cannot "
7059 				    "unmount '%s': not currently "
7060 				    "mounted\n"),
7061 				    zfs_get_name(zhp));
7062 				ret = 1;
7063 			} else if (zfs_unmountall(zhp, flags) != 0) {
7064 				ret = 1;
7065 			}
7066 			break;
7067 		}
7068 
7069 		zfs_close(zhp);
7070 	}
7071 
7072 	return (ret);
7073 }
7074 
7075 /*
7076  * zfs unmount -a
7077  * zfs unmount filesystem
7078  *
7079  * Unmount all filesystems, or a specific ZFS filesystem.
7080  */
7081 static int
zfs_do_unmount(int argc,char ** argv)7082 zfs_do_unmount(int argc, char **argv)
7083 {
7084 	return (unshare_unmount(OP_MOUNT, argc, argv));
7085 }
7086 
7087 /*
7088  * zfs unshare -a
7089  * zfs unshare filesystem
7090  *
7091  * Unshare all filesystems, or a specific ZFS filesystem.
7092  */
7093 static int
zfs_do_unshare(int argc,char ** argv)7094 zfs_do_unshare(int argc, char **argv)
7095 {
7096 	return (unshare_unmount(OP_SHARE, argc, argv));
7097 }
7098 
7099 /*
7100  * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
7101  * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
7102  */
7103 static int
manual_mount(int argc,char ** argv)7104 manual_mount(int argc, char **argv)
7105 {
7106 	zfs_handle_t *zhp;
7107 	char mountpoint[ZFS_MAXPROPLEN];
7108 	char mntopts[MNT_LINE_MAX] = { '\0' };
7109 	int ret = 0;
7110 	int c;
7111 	int flags = 0;
7112 	char *dataset, *path;
7113 
7114 	/* check options */
7115 	while ((c = getopt(argc, argv, ":mo:O")) != -1) {
7116 		switch (c) {
7117 		case 'o':
7118 			(void) strlcpy(mntopts, optarg, sizeof (mntopts));
7119 			break;
7120 		case 'O':
7121 			flags |= MS_OVERLAY;
7122 			break;
7123 		case 'm':
7124 			flags |= MS_NOMNTTAB;
7125 			break;
7126 		case ':':
7127 			(void) fprintf(stderr, gettext("missing argument for "
7128 			    "'%c' option\n"), optopt);
7129 			usage(B_FALSE);
7130 			break;
7131 		case '?':
7132 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
7133 			    optopt);
7134 			(void) fprintf(stderr, gettext("usage: mount [-o opts] "
7135 			    "<path>\n"));
7136 			return (2);
7137 		}
7138 	}
7139 
7140 	argc -= optind;
7141 	argv += optind;
7142 
7143 	/* check that we only have two arguments */
7144 	if (argc != 2) {
7145 		if (argc == 0)
7146 			(void) fprintf(stderr, gettext("missing dataset "
7147 			    "argument\n"));
7148 		else if (argc == 1)
7149 			(void) fprintf(stderr,
7150 			    gettext("missing mountpoint argument\n"));
7151 		else
7152 			(void) fprintf(stderr, gettext("too many arguments\n"));
7153 		(void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
7154 		return (2);
7155 	}
7156 
7157 	dataset = argv[0];
7158 	path = argv[1];
7159 
7160 	/* try to open the dataset */
7161 	if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
7162 		return (1);
7163 
7164 	(void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
7165 	    sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
7166 
7167 	/* check for legacy mountpoint and complain appropriately */
7168 	ret = 0;
7169 	if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
7170 		if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
7171 		    NULL, 0, mntopts, sizeof (mntopts)) != 0) {
7172 			(void) fprintf(stderr, gettext("mount failed: %s\n"),
7173 			    strerror(errno));
7174 			ret = 1;
7175 		}
7176 	} else {
7177 		(void) fprintf(stderr, gettext("filesystem '%s' cannot be "
7178 		    "mounted using 'mount -F zfs'\n"), dataset);
7179 		(void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
7180 		    "instead.\n"), path);
7181 		(void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
7182 		    "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
7183 		(void) fprintf(stderr, gettext("See zfs(8) for more "
7184 		    "information.\n"));
7185 		ret = 1;
7186 	}
7187 
7188 	return (ret);
7189 }
7190 
7191 /*
7192  * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
7193  * unmounts of non-legacy filesystems, as this is the dominant administrative
7194  * interface.
7195  */
7196 static int
manual_unmount(int argc,char ** argv)7197 manual_unmount(int argc, char **argv)
7198 {
7199 	int flags = 0;
7200 	int c;
7201 
7202 	/* check options */
7203 	while ((c = getopt(argc, argv, "f")) != -1) {
7204 		switch (c) {
7205 		case 'f':
7206 			flags = MS_FORCE;
7207 			break;
7208 		case '?':
7209 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
7210 			    optopt);
7211 			(void) fprintf(stderr, gettext("usage: unmount [-f] "
7212 			    "<path>\n"));
7213 			return (2);
7214 		}
7215 	}
7216 
7217 	argc -= optind;
7218 	argv += optind;
7219 
7220 	/* check arguments */
7221 	if (argc != 1) {
7222 		if (argc == 0)
7223 			(void) fprintf(stderr, gettext("missing path "
7224 			    "argument\n"));
7225 		else
7226 			(void) fprintf(stderr, gettext("too many arguments\n"));
7227 		(void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
7228 		return (2);
7229 	}
7230 
7231 	return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
7232 }
7233 
7234 static int
find_command_idx(char * command,int * idx)7235 find_command_idx(char *command, int *idx)
7236 {
7237 	int i;
7238 
7239 	for (i = 0; i < NCOMMAND; i++) {
7240 		if (command_table[i].name == NULL)
7241 			continue;
7242 
7243 		if (strcmp(command, command_table[i].name) == 0) {
7244 			*idx = i;
7245 			return (0);
7246 		}
7247 	}
7248 	return (1);
7249 }
7250 
7251 static int
zfs_do_diff(int argc,char ** argv)7252 zfs_do_diff(int argc, char **argv)
7253 {
7254 	zfs_handle_t *zhp;
7255 	int flags = 0;
7256 	char *tosnap = NULL;
7257 	char *fromsnap = NULL;
7258 	char *atp, *copy;
7259 	int err = 0;
7260 	int c;
7261 
7262 	while ((c = getopt(argc, argv, "FHt")) != -1) {
7263 		switch (c) {
7264 		case 'F':
7265 			flags |= ZFS_DIFF_CLASSIFY;
7266 			break;
7267 		case 'H':
7268 			flags |= ZFS_DIFF_PARSEABLE;
7269 			break;
7270 		case 't':
7271 			flags |= ZFS_DIFF_TIMESTAMP;
7272 			break;
7273 		default:
7274 			(void) fprintf(stderr,
7275 			    gettext("invalid option '%c'\n"), optopt);
7276 			usage(B_FALSE);
7277 		}
7278 	}
7279 
7280 	argc -= optind;
7281 	argv += optind;
7282 
7283 	if (argc < 1) {
7284 		(void) fprintf(stderr,
7285 		    gettext("must provide at least one snapshot name\n"));
7286 		usage(B_FALSE);
7287 	}
7288 
7289 	if (argc > 2) {
7290 		(void) fprintf(stderr, gettext("too many arguments\n"));
7291 		usage(B_FALSE);
7292 	}
7293 
7294 	fromsnap = argv[0];
7295 	tosnap = (argc == 2) ? argv[1] : NULL;
7296 
7297 	copy = NULL;
7298 	if (*fromsnap != '@')
7299 		copy = strdup(fromsnap);
7300 	else if (tosnap)
7301 		copy = strdup(tosnap);
7302 	if (copy == NULL)
7303 		usage(B_FALSE);
7304 
7305 	if ((atp = strchr(copy, '@')) != NULL)
7306 		*atp = '\0';
7307 
7308 	if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
7309 		return (1);
7310 
7311 	free(copy);
7312 
7313 	/*
7314 	 * Ignore SIGPIPE so that the library can give us
7315 	 * information on any failure
7316 	 */
7317 	(void) sigignore(SIGPIPE);
7318 
7319 	err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7320 
7321 	zfs_close(zhp);
7322 
7323 	return (err != 0);
7324 }
7325 
7326 /*
7327  * zfs remap <filesystem | volume>
7328  *
7329  * Remap the indirect blocks in the given fileystem or volume.
7330  */
7331 static int
zfs_do_remap(int argc,char ** argv)7332 zfs_do_remap(int argc, char **argv)
7333 {
7334 	const char *fsname;
7335 	int err = 0;
7336 	int c;
7337 
7338 	/* check options */
7339 	while ((c = getopt(argc, argv, "")) != -1) {
7340 		switch (c) {
7341 		case '?':
7342 			(void) fprintf(stderr,
7343 			    gettext("invalid option '%c'\n"), optopt);
7344 			usage(B_FALSE);
7345 		}
7346 	}
7347 
7348 	if (argc != 2) {
7349 		(void) fprintf(stderr, gettext("wrong number of arguments\n"));
7350 		usage(B_FALSE);
7351 	}
7352 
7353 	fsname = argv[1];
7354 	err = zfs_remap_indirects(g_zfs, fsname);
7355 
7356 	return (err);
7357 }
7358 
7359 /*
7360  * zfs bookmark <fs@snap> <fs#bmark>
7361  *
7362  * Creates a bookmark with the given name from the given snapshot.
7363  */
7364 static int
zfs_do_bookmark(int argc,char ** argv)7365 zfs_do_bookmark(int argc, char **argv)
7366 {
7367 	char snapname[ZFS_MAX_DATASET_NAME_LEN];
7368 	zfs_handle_t *zhp;
7369 	nvlist_t *nvl;
7370 	int ret = 0;
7371 	int c;
7372 
7373 	/* check options */
7374 	while ((c = getopt(argc, argv, "")) != -1) {
7375 		switch (c) {
7376 		case '?':
7377 			(void) fprintf(stderr,
7378 			    gettext("invalid option '%c'\n"), optopt);
7379 			goto usage;
7380 		}
7381 	}
7382 
7383 	argc -= optind;
7384 	argv += optind;
7385 
7386 	/* check number of arguments */
7387 	if (argc < 1) {
7388 		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
7389 		goto usage;
7390 	}
7391 	if (argc < 2) {
7392 		(void) fprintf(stderr, gettext("missing bookmark argument\n"));
7393 		goto usage;
7394 	}
7395 
7396 	if (strchr(argv[1], '#') == NULL) {
7397 		(void) fprintf(stderr,
7398 		    gettext("invalid bookmark name '%s' -- "
7399 		    "must contain a '#'\n"), argv[1]);
7400 		goto usage;
7401 	}
7402 
7403 	if (argv[0][0] == '@') {
7404 		/*
7405 		 * Snapshot name begins with @.
7406 		 * Default to same fs as bookmark.
7407 		 */
7408 		(void) strncpy(snapname, argv[1], sizeof (snapname));
7409 		*strchr(snapname, '#') = '\0';
7410 		(void) strlcat(snapname, argv[0], sizeof (snapname));
7411 	} else {
7412 		(void) strlcpy(snapname, argv[0], sizeof (snapname));
7413 	}
7414 	zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
7415 	if (zhp == NULL)
7416 		goto usage;
7417 	zfs_close(zhp);
7418 
7419 
7420 	nvl = fnvlist_alloc();
7421 	fnvlist_add_string(nvl, argv[1], snapname);
7422 	ret = lzc_bookmark(nvl, NULL);
7423 	fnvlist_free(nvl);
7424 
7425 	if (ret != 0) {
7426 		const char *err_msg = NULL;
7427 		char errbuf[1024];
7428 
7429 		(void) snprintf(errbuf, sizeof (errbuf),
7430 		    dgettext(TEXT_DOMAIN,
7431 		    "cannot create bookmark '%s'"), argv[1]);
7432 
7433 		switch (ret) {
7434 		case EXDEV:
7435 			err_msg = "bookmark is in a different pool";
7436 			break;
7437 		case EEXIST:
7438 			err_msg = "bookmark exists";
7439 			break;
7440 		case EINVAL:
7441 			err_msg = "invalid argument";
7442 			break;
7443 		case ENOTSUP:
7444 			err_msg = "bookmark feature not enabled";
7445 			break;
7446 		case ENOSPC:
7447 			err_msg = "out of space";
7448 			break;
7449 		default:
7450 			(void) zfs_standard_error(g_zfs, ret, errbuf);
7451 			break;
7452 		}
7453 		if (err_msg != NULL) {
7454 			(void) fprintf(stderr, "%s: %s\n", errbuf,
7455 			    dgettext(TEXT_DOMAIN, err_msg));
7456 		}
7457 	}
7458 
7459 	return (ret != 0);
7460 
7461 usage:
7462 	usage(B_FALSE);
7463 	return (-1);
7464 }
7465 
7466 static int
zfs_do_channel_program(int argc,char ** argv)7467 zfs_do_channel_program(int argc, char **argv)
7468 {
7469 	int ret, fd;
7470 	int c;
7471 	char *progbuf, *filename, *poolname;
7472 	size_t progsize, progread;
7473 	nvlist_t *outnvl = NULL;
7474 	uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7475 	uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7476 	boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
7477 	zpool_handle_t *zhp;
7478 
7479 	/* check options */
7480 	while (-1 !=
7481 	    (c = getopt(argc, argv, "jnt:(instr-limit)m:(memory-limit)"))) {
7482 		switch (c) {
7483 		case 't':
7484 		case 'm': {
7485 			uint64_t arg;
7486 			char *endp;
7487 
7488 			errno = 0;
7489 			arg = strtoull(optarg, &endp, 0);
7490 			if (errno != 0 || *endp != '\0') {
7491 				(void) fprintf(stderr, gettext(
7492 				    "invalid argument "
7493 				    "'%s': expected integer\n"), optarg);
7494 				goto usage;
7495 			}
7496 
7497 			if (c == 't') {
7498 				if (arg > ZCP_MAX_INSTRLIMIT || arg == 0) {
7499 					(void) fprintf(stderr, gettext(
7500 					    "Invalid instruction limit: "
7501 					    "%s\n"), optarg);
7502 					return (1);
7503 				} else {
7504 					instrlimit = arg;
7505 				}
7506 			} else {
7507 				ASSERT3U(c, ==, 'm');
7508 				if (arg > ZCP_MAX_MEMLIMIT || arg == 0) {
7509 					(void) fprintf(stderr, gettext(
7510 					    "Invalid memory limit: "
7511 					    "%s\n"), optarg);
7512 					return (1);
7513 				} else {
7514 					memlimit = arg;
7515 				}
7516 			}
7517 			break;
7518 		}
7519 		case 'n': {
7520 			sync_flag = B_FALSE;
7521 			break;
7522 		}
7523 		case 'j': {
7524 			json_output = B_TRUE;
7525 			break;
7526 		}
7527 		case '?':
7528 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
7529 			    optopt);
7530 			goto usage;
7531 		}
7532 	}
7533 
7534 	argc -= optind;
7535 	argv += optind;
7536 
7537 	if (argc < 2) {
7538 		(void) fprintf(stderr,
7539 		    gettext("invalid number of arguments\n"));
7540 		goto usage;
7541 	}
7542 
7543 	poolname = argv[0];
7544 	filename = argv[1];
7545 	if (strcmp(filename, "-") == 0) {
7546 		fd = 0;
7547 		filename = "standard input";
7548 	} else if ((fd = open(filename, O_RDONLY)) < 0) {
7549 		(void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7550 		    filename, strerror(errno));
7551 		return (1);
7552 	}
7553 
7554 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7555 		(void) fprintf(stderr, gettext("cannot open pool '%s'"),
7556 		    poolname);
7557 		return (1);
7558 	}
7559 	zpool_close(zhp);
7560 
7561 	/*
7562 	 * Read in the channel program, expanding the program buffer as
7563 	 * necessary.
7564 	 */
7565 	progread = 0;
7566 	progsize = 1024;
7567 	progbuf = safe_malloc(progsize);
7568 	do {
7569 		ret = read(fd, progbuf + progread, progsize - progread);
7570 		progread += ret;
7571 		if (progread == progsize && ret > 0) {
7572 			progsize *= 2;
7573 			progbuf = safe_realloc(progbuf, progsize);
7574 		}
7575 	} while (ret > 0);
7576 
7577 	if (fd != 0)
7578 		(void) close(fd);
7579 	if (ret < 0) {
7580 		free(progbuf);
7581 		(void) fprintf(stderr,
7582 		    gettext("cannot read '%s': %s\n"),
7583 		    filename, strerror(errno));
7584 		return (1);
7585 	}
7586 	progbuf[progread] = '\0';
7587 
7588 	/*
7589 	 * Any remaining arguments are passed as arguments to the lua script as
7590 	 * a string array:
7591 	 * {
7592 	 *	"argv" -> [ "arg 1", ... "arg n" ],
7593 	 * }
7594 	 */
7595 	nvlist_t *argnvl = fnvlist_alloc();
7596 	fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7597 
7598 	if (sync_flag) {
7599 		ret = lzc_channel_program(poolname, progbuf,
7600 		    instrlimit, memlimit, argnvl, &outnvl);
7601 	} else {
7602 		ret = lzc_channel_program_nosync(poolname, progbuf,
7603 		    instrlimit, memlimit, argnvl, &outnvl);
7604 	}
7605 
7606 	if (ret != 0) {
7607 		/*
7608 		 * On error, report the error message handed back by lua if one
7609 		 * exists.  Otherwise, generate an appropriate error message,
7610 		 * falling back on strerror() for an unexpected return code.
7611 		 */
7612 		char *errstring = NULL;
7613 		const char *msg = gettext("Channel program execution failed");
7614 		if (outnvl != NULL && nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7615 			(void) nvlist_lookup_string(outnvl,
7616 			    ZCP_RET_ERROR, &errstring);
7617 			if (errstring == NULL)
7618 				errstring = strerror(ret);
7619 		} else {
7620 			switch (ret) {
7621 			case EINVAL:
7622 				errstring =
7623 				    "Invalid instruction or memory limit.";
7624 				break;
7625 			case ENOMEM:
7626 				errstring = "Return value too large.";
7627 				break;
7628 			case ENOSPC:
7629 				errstring = "Memory limit exhausted.";
7630 				break;
7631 			case ETIME:
7632 				errstring = "Timed out.";
7633 				break;
7634 			case EPERM:
7635 				errstring = "Permission denied. Channel "
7636 				    "programs must be run as root.";
7637 				break;
7638 			default:
7639 				(void) zfs_standard_error(g_zfs, ret, msg);
7640 			}
7641 		}
7642 		if (errstring != NULL)
7643 			(void) fprintf(stderr, "%s:\n%s\n", msg, errstring);
7644 	} else {
7645 		if (json_output) {
7646 			(void) nvlist_print_json(stdout, outnvl);
7647 		} else if (nvlist_empty(outnvl)) {
7648 			(void) fprintf(stdout, gettext("Channel program fully "
7649 			    "executed and did not produce output.\n"));
7650 		} else {
7651 			(void) fprintf(stdout, gettext("Channel program fully "
7652 			    "executed and produced output:\n"));
7653 			dump_nvlist(outnvl, 4);
7654 		}
7655 	}
7656 
7657 	free(progbuf);
7658 	fnvlist_free(outnvl);
7659 	fnvlist_free(argnvl);
7660 	return (ret != 0);
7661 
7662 usage:
7663 	usage(B_FALSE);
7664 	return (-1);
7665 }
7666 
7667 typedef struct loadkey_cbdata {
7668 	boolean_t cb_loadkey;
7669 	boolean_t cb_recursive;
7670 	boolean_t cb_noop;
7671 	char *cb_keylocation;
7672 	uint64_t cb_numfailed;
7673 	uint64_t cb_numattempted;
7674 } loadkey_cbdata_t;
7675 
7676 static int
load_key_callback(zfs_handle_t * zhp,void * data)7677 load_key_callback(zfs_handle_t *zhp, void *data)
7678 {
7679 	int ret;
7680 	boolean_t is_encroot;
7681 	loadkey_cbdata_t *cb = data;
7682 	uint64_t keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7683 
7684 	/*
7685 	 * If we are working recursively, we want to skip loading / unloading
7686 	 * keys for non-encryption roots and datasets whose keys are already
7687 	 * in the desired end-state.
7688 	 */
7689 	if (cb->cb_recursive) {
7690 		ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
7691 		if (ret != 0)
7692 			return (ret);
7693 		if (!is_encroot)
7694 			return (0);
7695 
7696 		if ((cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_AVAILABLE) ||
7697 		    (!cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_UNAVAILABLE))
7698 			return (0);
7699 	}
7700 
7701 	cb->cb_numattempted++;
7702 
7703 	if (cb->cb_loadkey)
7704 		ret = zfs_crypto_load_key(zhp, cb->cb_noop, cb->cb_keylocation);
7705 	else
7706 		ret = zfs_crypto_unload_key(zhp);
7707 
7708 	if (ret != 0) {
7709 		cb->cb_numfailed++;
7710 		return (ret);
7711 	}
7712 
7713 	return (0);
7714 }
7715 
7716 static int
load_unload_keys(int argc,char ** argv,boolean_t loadkey)7717 load_unload_keys(int argc, char **argv, boolean_t loadkey)
7718 {
7719 	int c, ret = 0, flags = 0;
7720 	boolean_t do_all = B_FALSE;
7721 	loadkey_cbdata_t cb = { 0 };
7722 
7723 	cb.cb_loadkey = loadkey;
7724 
7725 	while ((c = getopt(argc, argv, "anrL:")) != -1) {
7726 		/* noop and alternate keylocations only apply to zfs load-key */
7727 		if (loadkey) {
7728 			switch (c) {
7729 			case 'n':
7730 				cb.cb_noop = B_TRUE;
7731 				continue;
7732 			case 'L':
7733 				cb.cb_keylocation = optarg;
7734 				continue;
7735 			default:
7736 				break;
7737 			}
7738 		}
7739 
7740 		switch (c) {
7741 		case 'a':
7742 			do_all = B_TRUE;
7743 			cb.cb_recursive = B_TRUE;
7744 			break;
7745 		case 'r':
7746 			flags |= ZFS_ITER_RECURSE;
7747 			cb.cb_recursive = B_TRUE;
7748 			break;
7749 		default:
7750 			(void) fprintf(stderr,
7751 			    gettext("invalid option '%c'\n"), optopt);
7752 			usage(B_FALSE);
7753 		}
7754 	}
7755 
7756 	argc -= optind;
7757 	argv += optind;
7758 
7759 	if (!do_all && argc == 0) {
7760 		(void) fprintf(stderr,
7761 		    gettext("Missing dataset argument or -a option\n"));
7762 		usage(B_FALSE);
7763 	}
7764 
7765 	if (do_all && argc != 0) {
7766 		(void) fprintf(stderr,
7767 		    gettext("Cannot specify dataset with -a option\n"));
7768 		usage(B_FALSE);
7769 	}
7770 
7771 	if (cb.cb_recursive && cb.cb_keylocation != NULL &&
7772 	    strcmp(cb.cb_keylocation, "prompt") != 0) {
7773 		(void) fprintf(stderr, gettext("alternate keylocation may only "
7774 		    "be 'prompt' with -r or -a\n"));
7775 		usage(B_FALSE);
7776 	}
7777 
7778 	ret = zfs_for_each(argc, argv, flags,
7779 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 0,
7780 	    load_key_callback, &cb);
7781 
7782 	if (cb.cb_noop || (cb.cb_recursive && cb.cb_numattempted != 0)) {
7783 		(void) printf(gettext("%llu / %llu key(s) successfully %s\n"),
7784 		    (u_longlong_t)(cb.cb_numattempted - cb.cb_numfailed),
7785 		    (u_longlong_t)cb.cb_numattempted,
7786 		    loadkey ? (cb.cb_noop ? "verified" : "loaded") :
7787 		    "unloaded");
7788 	}
7789 
7790 	if (cb.cb_numfailed != 0)
7791 		ret = -1;
7792 
7793 	return (ret);
7794 }
7795 
7796 static int
zfs_do_load_key(int argc,char ** argv)7797 zfs_do_load_key(int argc, char **argv)
7798 {
7799 	return (load_unload_keys(argc, argv, B_TRUE));
7800 }
7801 
7802 
7803 static int
zfs_do_unload_key(int argc,char ** argv)7804 zfs_do_unload_key(int argc, char **argv)
7805 {
7806 	return (load_unload_keys(argc, argv, B_FALSE));
7807 }
7808 
7809 static int
zfs_do_change_key(int argc,char ** argv)7810 zfs_do_change_key(int argc, char **argv)
7811 {
7812 	int c, ret;
7813 	uint64_t keystatus;
7814 	boolean_t loadkey = B_FALSE, inheritkey = B_FALSE;
7815 	zfs_handle_t *zhp = NULL;
7816 	nvlist_t *props = fnvlist_alloc();
7817 
7818 	while ((c = getopt(argc, argv, "lio:")) != -1) {
7819 		switch (c) {
7820 		case 'l':
7821 			loadkey = B_TRUE;
7822 			break;
7823 		case 'i':
7824 			inheritkey = B_TRUE;
7825 			break;
7826 		case 'o':
7827 			if (!parseprop(props, optarg)) {
7828 				nvlist_free(props);
7829 				return (1);
7830 			}
7831 			break;
7832 		default:
7833 			(void) fprintf(stderr,
7834 			    gettext("invalid option '%c'\n"), optopt);
7835 			usage(B_FALSE);
7836 		}
7837 	}
7838 
7839 	if (inheritkey && !nvlist_empty(props)) {
7840 		(void) fprintf(stderr,
7841 		    gettext("Properties not allowed for inheriting\n"));
7842 		usage(B_FALSE);
7843 	}
7844 
7845 	argc -= optind;
7846 	argv += optind;
7847 
7848 	if (argc < 1) {
7849 		(void) fprintf(stderr, gettext("Missing dataset argument\n"));
7850 		usage(B_FALSE);
7851 	}
7852 
7853 	if (argc > 1) {
7854 		(void) fprintf(stderr, gettext("Too many arguments\n"));
7855 		usage(B_FALSE);
7856 	}
7857 
7858 	zhp = zfs_open(g_zfs, argv[argc - 1],
7859 	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
7860 	if (zhp == NULL)
7861 		usage(B_FALSE);
7862 
7863 	if (loadkey) {
7864 		keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7865 		if (keystatus != ZFS_KEYSTATUS_AVAILABLE) {
7866 			ret = zfs_crypto_load_key(zhp, B_FALSE, NULL);
7867 			if (ret != 0) {
7868 				nvlist_free(props);
7869 				zfs_close(zhp);
7870 				return (-1);
7871 			}
7872 		}
7873 
7874 		/* refresh the properties so the new keystatus is visible */
7875 		zfs_refresh_properties(zhp);
7876 	}
7877 
7878 	ret = zfs_crypto_rewrap(zhp, props, inheritkey);
7879 	if (ret != 0) {
7880 		nvlist_free(props);
7881 		zfs_close(zhp);
7882 		return (-1);
7883 	}
7884 
7885 	nvlist_free(props);
7886 	zfs_close(zhp);
7887 	return (0);
7888 }
7889 
7890 /*
7891  * 1) zfs project [-d|-r] <file|directory ...>
7892  *    List project ID and inherit flag of file(s) or directories.
7893  *    -d: List the directory itself, not its children.
7894  *    -r: List subdirectories recursively.
7895  *
7896  * 2) zfs project -C [-k] [-r] <file|directory ...>
7897  *    Clear project inherit flag and/or ID on the file(s) or directories.
7898  *    -k: Keep the project ID unchanged. If not specified, the project ID
7899  *	  will be reset as zero.
7900  *    -r: Clear on subdirectories recursively.
7901  *
7902  * 3) zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
7903  *    Check project ID and inherit flag on the file(s) or directories,
7904  *    report the outliers.
7905  *    -0: Print file name followed by a NUL instead of newline.
7906  *    -d: Check the directory itself, not its children.
7907  *    -p: Specify the referenced ID for comparing with the target file(s)
7908  *	  or directories' project IDs. If not specified, the target (top)
7909  *	  directory's project ID will be used as the referenced one.
7910  *    -r: Check subdirectories recursively.
7911  *
7912  * 4) zfs project [-p id] [-r] [-s] <file|directory ...>
7913  *    Set project ID and/or inherit flag on the file(s) or directories.
7914  *    -p: Set the project ID as the given id.
7915  *    -r: Set on subdirectory recursively. If not specify "-p" option,
7916  *	  it will use top-level directory's project ID as the given id,
7917  *	  then set both project ID and inherit flag on all descendants
7918  *	  of the top-level directory.
7919  *    -s: Set project inherit flag.
7920  */
7921 static int
zfs_do_project(int argc,char ** argv)7922 zfs_do_project(int argc, char **argv)
7923 {
7924 	zfs_project_control_t zpc = {
7925 		.zpc_expected_projid = ZFS_INVALID_PROJID,
7926 		.zpc_op = ZFS_PROJECT_OP_DEFAULT,
7927 		.zpc_dironly = B_FALSE,
7928 		.zpc_keep_projid = B_FALSE,
7929 		.zpc_newline = B_TRUE,
7930 		.zpc_recursive = B_FALSE,
7931 		.zpc_set_flag = B_FALSE,
7932 	};
7933 	int ret = 0, c;
7934 
7935 	if (argc < 2)
7936 		usage(B_FALSE);
7937 
7938 	while ((c = getopt(argc, argv, "0Ccdkp:rs")) != -1) {
7939 		switch (c) {
7940 		case '0':
7941 			zpc.zpc_newline = B_FALSE;
7942 			break;
7943 		case 'C':
7944 			if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7945 				(void) fprintf(stderr, gettext("cannot "
7946 				    "specify '-C' '-c' '-s' together\n"));
7947 				usage(B_FALSE);
7948 			}
7949 
7950 			zpc.zpc_op = ZFS_PROJECT_OP_CLEAR;
7951 			break;
7952 		case 'c':
7953 			if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7954 				(void) fprintf(stderr, gettext("cannot "
7955 				    "specify '-C' '-c' '-s' together\n"));
7956 				usage(B_FALSE);
7957 			}
7958 
7959 			zpc.zpc_op = ZFS_PROJECT_OP_CHECK;
7960 			break;
7961 		case 'd':
7962 			zpc.zpc_dironly = B_TRUE;
7963 			/* overwrite "-r" option */
7964 			zpc.zpc_recursive = B_FALSE;
7965 			break;
7966 		case 'k':
7967 			zpc.zpc_keep_projid = B_TRUE;
7968 			break;
7969 		case 'p': {
7970 			char *endptr;
7971 
7972 			errno = 0;
7973 			zpc.zpc_expected_projid = strtoull(optarg, &endptr, 0);
7974 			if (errno != 0 || *endptr != '\0') {
7975 				(void) fprintf(stderr,
7976 				    gettext("project ID must be less than "
7977 				    "%u\n"), UINT32_MAX);
7978 				usage(B_FALSE);
7979 			}
7980 			if (zpc.zpc_expected_projid >= UINT32_MAX) {
7981 				(void) fprintf(stderr,
7982 				    gettext("invalid project ID\n"));
7983 				usage(B_FALSE);
7984 			}
7985 			break;
7986 		}
7987 		case 'r':
7988 			zpc.zpc_recursive = B_TRUE;
7989 			/* overwrite "-d" option */
7990 			zpc.zpc_dironly = B_FALSE;
7991 			break;
7992 		case 's':
7993 			if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7994 				(void) fprintf(stderr, gettext("cannot "
7995 				    "specify '-C' '-c' '-s' together\n"));
7996 				usage(B_FALSE);
7997 			}
7998 
7999 			zpc.zpc_set_flag = B_TRUE;
8000 			zpc.zpc_op = ZFS_PROJECT_OP_SET;
8001 			break;
8002 		default:
8003 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
8004 			    optopt);
8005 			usage(B_FALSE);
8006 		}
8007 	}
8008 
8009 	if (zpc.zpc_op == ZFS_PROJECT_OP_DEFAULT) {
8010 		if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID)
8011 			zpc.zpc_op = ZFS_PROJECT_OP_SET;
8012 		else
8013 			zpc.zpc_op = ZFS_PROJECT_OP_LIST;
8014 	}
8015 
8016 	switch (zpc.zpc_op) {
8017 	case ZFS_PROJECT_OP_LIST:
8018 		if (zpc.zpc_keep_projid) {
8019 			(void) fprintf(stderr,
8020 			    gettext("'-k' is only valid together with '-C'\n"));
8021 			usage(B_FALSE);
8022 		}
8023 		if (!zpc.zpc_newline) {
8024 			(void) fprintf(stderr,
8025 			    gettext("'-0' is only valid together with '-c'\n"));
8026 			usage(B_FALSE);
8027 		}
8028 		break;
8029 	case ZFS_PROJECT_OP_CHECK:
8030 		if (zpc.zpc_keep_projid) {
8031 			(void) fprintf(stderr,
8032 			    gettext("'-k' is only valid together with '-C'\n"));
8033 			usage(B_FALSE);
8034 		}
8035 		break;
8036 	case ZFS_PROJECT_OP_CLEAR:
8037 		if (zpc.zpc_dironly) {
8038 			(void) fprintf(stderr,
8039 			    gettext("'-d' is useless together with '-C'\n"));
8040 			usage(B_FALSE);
8041 		}
8042 		if (!zpc.zpc_newline) {
8043 			(void) fprintf(stderr,
8044 			    gettext("'-0' is only valid together with '-c'\n"));
8045 			usage(B_FALSE);
8046 		}
8047 		if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID) {
8048 			(void) fprintf(stderr,
8049 			    gettext("'-p' is useless together with '-C'\n"));
8050 			usage(B_FALSE);
8051 		}
8052 		break;
8053 	case ZFS_PROJECT_OP_SET:
8054 		if (zpc.zpc_dironly) {
8055 			(void) fprintf(stderr,
8056 			    gettext("'-d' is useless for set project ID and/or "
8057 			    "inherit flag\n"));
8058 			usage(B_FALSE);
8059 		}
8060 		if (zpc.zpc_keep_projid) {
8061 			(void) fprintf(stderr,
8062 			    gettext("'-k' is only valid together with '-C'\n"));
8063 			usage(B_FALSE);
8064 		}
8065 		if (!zpc.zpc_newline) {
8066 			(void) fprintf(stderr,
8067 			    gettext("'-0' is only valid together with '-c'\n"));
8068 			usage(B_FALSE);
8069 		}
8070 		break;
8071 	default:
8072 		ASSERT(0);
8073 		break;
8074 	}
8075 
8076 	argv += optind;
8077 	argc -= optind;
8078 	if (argc == 0) {
8079 		(void) fprintf(stderr,
8080 		    gettext("missing file or directory target(s)\n"));
8081 		usage(B_FALSE);
8082 	}
8083 
8084 	for (int i = 0; i < argc; i++) {
8085 		int err;
8086 
8087 		err = zfs_project_handle(argv[i], &zpc);
8088 		if (err && !ret)
8089 			ret = err;
8090 	}
8091 
8092 	return (ret);
8093 }
8094 
8095 int
main(int argc,char ** argv)8096 main(int argc, char **argv)
8097 {
8098 	int ret = 0;
8099 	int i;
8100 	char *progname;
8101 	char *cmdname;
8102 
8103 	(void) setlocale(LC_ALL, "");
8104 	(void) textdomain(TEXT_DOMAIN);
8105 
8106 	opterr = 0;
8107 
8108 	if ((g_zfs = libzfs_init()) == NULL) {
8109 		(void) fprintf(stderr, gettext("internal error: failed to "
8110 		    "initialize ZFS library\n"));
8111 		return (1);
8112 	}
8113 
8114 	zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
8115 
8116 	libzfs_print_on_error(g_zfs, B_TRUE);
8117 
8118 	if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
8119 		(void) fprintf(stderr, gettext("internal error: unable to "
8120 		    "open %s\n"), MNTTAB);
8121 		return (1);
8122 	}
8123 
8124 	/*
8125 	 * This command also doubles as the /etc/fs mount and unmount program.
8126 	 * Determine if we should take this behavior based on argv[0].
8127 	 */
8128 	progname = basename(argv[0]);
8129 	if (strcmp(progname, "mount") == 0) {
8130 		ret = manual_mount(argc, argv);
8131 	} else if (strcmp(progname, "umount") == 0) {
8132 		ret = manual_unmount(argc, argv);
8133 	} else {
8134 		/*
8135 		 * Make sure the user has specified some command.
8136 		 */
8137 		if (argc < 2) {
8138 			(void) fprintf(stderr, gettext("missing command\n"));
8139 			usage(B_FALSE);
8140 		}
8141 
8142 		cmdname = argv[1];
8143 
8144 		/*
8145 		 * The 'umount' command is an alias for 'unmount'
8146 		 */
8147 		if (strcmp(cmdname, "umount") == 0)
8148 			cmdname = "unmount";
8149 
8150 		/*
8151 		 * The 'recv' command is an alias for 'receive'
8152 		 */
8153 		if (strcmp(cmdname, "recv") == 0)
8154 			cmdname = "receive";
8155 
8156 		/*
8157 		 * The 'snap' command is an alias for 'snapshot'
8158 		 */
8159 		if (strcmp(cmdname, "snap") == 0)
8160 			cmdname = "snapshot";
8161 
8162 		/*
8163 		 * Special case '-?'
8164 		 */
8165 		if (strcmp(cmdname, "-?") == 0)
8166 			usage(B_TRUE);
8167 
8168 		/*
8169 		 * Run the appropriate command.
8170 		 */
8171 		libzfs_mnttab_cache(g_zfs, B_TRUE);
8172 		if (find_command_idx(cmdname, &i) == 0) {
8173 			current_command = &command_table[i];
8174 			ret = command_table[i].func(argc - 1, argv + 1);
8175 		} else if (strchr(cmdname, '=') != NULL) {
8176 			verify(find_command_idx("set", &i) == 0);
8177 			current_command = &command_table[i];
8178 			ret = command_table[i].func(argc, argv);
8179 		} else {
8180 			(void) fprintf(stderr, gettext("unrecognized "
8181 			    "command '%s'\n"), cmdname);
8182 			usage(B_FALSE);
8183 		}
8184 		libzfs_mnttab_cache(g_zfs, B_FALSE);
8185 	}
8186 
8187 	(void) fclose(mnttab_file);
8188 
8189 	if (ret == 0 && log_history)
8190 		(void) zpool_log_history(g_zfs, history_str);
8191 
8192 	libzfs_fini(g_zfs);
8193 
8194 	/*
8195 	 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
8196 	 * for the purposes of running ::findleaks.
8197 	 */
8198 	if (getenv("ZFS_ABORT") != NULL) {
8199 		(void) printf("dumping core by request\n");
8200 		abort();
8201 	}
8202 
8203 	return (ret);
8204 }
8205