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d99a0153 CW |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * This file and its contents are supplied under the terms of the | |
5 | * Common Development and Distribution License ("CDDL"), version 1.0. | |
6 | * You may only use this file in accordance with the terms of version | |
7 | * 1.0 of the CDDL. | |
8 | * | |
9 | * A full copy of the text of the CDDL should have accompanied this | |
10 | * source. A copy of the CDDL is also available via the Internet at | |
11 | * http://www.illumos.org/license/CDDL. | |
12 | * | |
13 | * CDDL HEADER END | |
14 | */ | |
15 | ||
16 | /* | |
af073689 | 17 | * Copyright (c) 2016, 2017 by Delphix. All rights reserved. |
948f0c44 | 18 | * Copyright (c) 2019, 2020 by Christian Schwarz. All rights reserved. |
e2ef1cbf | 19 | * Copyright 2020 Joyent, Inc. |
d99a0153 CW |
20 | */ |
21 | ||
22 | #include <sys/lua/lua.h> | |
23 | #include <sys/lua/lauxlib.h> | |
24 | ||
25 | #include <sys/zcp.h> | |
13b5a4d5 | 26 | #include <sys/zcp_set.h> |
d99a0153 CW |
27 | #include <sys/dsl_dir.h> |
28 | #include <sys/dsl_pool.h> | |
29 | #include <sys/dsl_prop.h> | |
30 | #include <sys/dsl_synctask.h> | |
31 | #include <sys/dsl_dataset.h> | |
32 | #include <sys/dsl_bookmark.h> | |
33 | #include <sys/dsl_destroy.h> | |
34 | #include <sys/dmu_objset.h> | |
35 | #include <sys/zfs_znode.h> | |
36 | #include <sys/zfeature.h> | |
37 | #include <sys/metaslab.h> | |
38 | ||
39 | #define DST_AVG_BLKSHIFT 14 | |
40 | ||
e2ef1cbf JK |
41 | typedef struct zcp_inherit_prop_arg { |
42 | lua_State *zipa_state; | |
43 | const char *zipa_prop; | |
44 | dsl_props_set_arg_t zipa_dpsa; | |
45 | } zcp_inherit_prop_arg_t; | |
46 | ||
d99a0153 CW |
47 | typedef int (zcp_synctask_func_t)(lua_State *, boolean_t, nvlist_t *); |
48 | typedef struct zcp_synctask_info { | |
49 | const char *name; | |
50 | zcp_synctask_func_t *func; | |
d99a0153 CW |
51 | const zcp_arg_t pargs[4]; |
52 | const zcp_arg_t kwargs[2]; | |
234c91c5 CW |
53 | zfs_space_check_t space_check; |
54 | int blocks_modified; | |
d99a0153 CW |
55 | } zcp_synctask_info_t; |
56 | ||
23c13c7e AL |
57 | static void |
58 | zcp_synctask_cleanup(void *arg) | |
59 | { | |
60 | fnvlist_free(arg); | |
61 | } | |
62 | ||
d99a0153 CW |
63 | /* |
64 | * Generic synctask interface for channel program syncfuncs. | |
65 | * | |
66 | * To perform some action in syncing context, we'd generally call | |
67 | * dsl_sync_task(), but since the Lua script is already running inside a | |
68 | * synctask we need to leave out some actions (such as acquiring the config | |
69 | * rwlock and performing space checks). | |
70 | * | |
71 | * If 'sync' is false, executes a dry run and returns the error code. | |
72 | * | |
5b72a38d SD |
73 | * If we are not running in syncing context and we are not doing a dry run |
74 | * (meaning we are running a zfs.sync function in open-context) then we | |
75 | * return a Lua error. | |
76 | * | |
d99a0153 CW |
77 | * This function also handles common fatal error cases for channel program |
78 | * library functions. If a fatal error occurs, err_dsname will be the dataset | |
79 | * name reported in error messages, if supplied. | |
80 | */ | |
81 | static int | |
82 | zcp_sync_task(lua_State *state, dsl_checkfunc_t *checkfunc, | |
83 | dsl_syncfunc_t *syncfunc, void *arg, boolean_t sync, const char *err_dsname) | |
84 | { | |
85 | int err; | |
86 | zcp_run_info_t *ri = zcp_run_info(state); | |
87 | ||
88 | err = checkfunc(arg, ri->zri_tx); | |
89 | if (!sync) | |
90 | return (err); | |
91 | ||
5b72a38d SD |
92 | if (!ri->zri_sync) { |
93 | return (luaL_error(state, "running functions from the zfs.sync " | |
94 | "submodule requires passing sync=TRUE to " | |
95 | "lzc_channel_program() (i.e. do not specify the \"-n\" " | |
96 | "command line argument)")); | |
97 | } | |
98 | ||
d99a0153 CW |
99 | if (err == 0) { |
100 | syncfunc(arg, ri->zri_tx); | |
101 | } else if (err == EIO) { | |
102 | if (err_dsname != NULL) { | |
103 | return (luaL_error(state, | |
104 | "I/O error while accessing dataset '%s'", | |
105 | err_dsname)); | |
106 | } else { | |
107 | return (luaL_error(state, | |
108 | "I/O error while accessing dataset.")); | |
109 | } | |
110 | } | |
111 | ||
112 | return (err); | |
113 | } | |
114 | ||
115 | ||
116 | static int zcp_synctask_destroy(lua_State *, boolean_t, nvlist_t *); | |
18168da7 | 117 | static const zcp_synctask_info_t zcp_synctask_destroy_info = { |
d99a0153 CW |
118 | .name = "destroy", |
119 | .func = zcp_synctask_destroy, | |
d99a0153 | 120 | .pargs = { |
18168da7 | 121 | {.za_name = "filesystem | snapshot", .za_lua_type = LUA_TSTRING }, |
d99a0153 CW |
122 | {NULL, 0} |
123 | }, | |
124 | .kwargs = { | |
18168da7 | 125 | {.za_name = "defer", .za_lua_type = LUA_TBOOLEAN }, |
d99a0153 | 126 | {NULL, 0} |
234c91c5 | 127 | }, |
d2734cce | 128 | .space_check = ZFS_SPACE_CHECK_DESTROY, |
234c91c5 | 129 | .blocks_modified = 0 |
d99a0153 CW |
130 | }; |
131 | ||
d99a0153 CW |
132 | static int |
133 | zcp_synctask_destroy(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
134 | { | |
14e4e3cb | 135 | (void) err_details; |
d99a0153 CW |
136 | int err; |
137 | const char *dsname = lua_tostring(state, 1); | |
138 | ||
139 | boolean_t issnap = (strchr(dsname, '@') != NULL); | |
140 | ||
141 | if (!issnap && !lua_isnil(state, 2)) { | |
142 | return (luaL_error(state, | |
143 | "'deferred' kwarg only supported for snapshots: %s", | |
144 | dsname)); | |
145 | } | |
146 | ||
147 | if (issnap) { | |
148 | dsl_destroy_snapshot_arg_t ddsa = { 0 }; | |
149 | ddsa.ddsa_name = dsname; | |
150 | if (!lua_isnil(state, 2)) { | |
151 | ddsa.ddsa_defer = lua_toboolean(state, 2); | |
152 | } else { | |
153 | ddsa.ddsa_defer = B_FALSE; | |
154 | } | |
155 | ||
156 | err = zcp_sync_task(state, dsl_destroy_snapshot_check, | |
157 | dsl_destroy_snapshot_sync, &ddsa, sync, dsname); | |
158 | } else { | |
159 | dsl_destroy_head_arg_t ddha = { 0 }; | |
160 | ddha.ddha_name = dsname; | |
161 | ||
162 | err = zcp_sync_task(state, dsl_destroy_head_check, | |
163 | dsl_destroy_head_sync, &ddha, sync, dsname); | |
164 | } | |
165 | ||
166 | return (err); | |
167 | } | |
168 | ||
234c91c5 | 169 | static int zcp_synctask_promote(lua_State *, boolean_t, nvlist_t *); |
18168da7 | 170 | static const zcp_synctask_info_t zcp_synctask_promote_info = { |
d99a0153 CW |
171 | .name = "promote", |
172 | .func = zcp_synctask_promote, | |
d99a0153 | 173 | .pargs = { |
18168da7 | 174 | {.za_name = "clone", .za_lua_type = LUA_TSTRING }, |
d99a0153 CW |
175 | {NULL, 0} |
176 | }, | |
177 | .kwargs = { | |
178 | {NULL, 0} | |
234c91c5 CW |
179 | }, |
180 | .space_check = ZFS_SPACE_CHECK_RESERVED, | |
181 | .blocks_modified = 3 | |
d99a0153 CW |
182 | }; |
183 | ||
184 | static int | |
185 | zcp_synctask_promote(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
186 | { | |
187 | int err; | |
188 | dsl_dataset_promote_arg_t ddpa = { 0 }; | |
189 | const char *dsname = lua_tostring(state, 1); | |
190 | zcp_run_info_t *ri = zcp_run_info(state); | |
191 | ||
192 | ddpa.ddpa_clonename = dsname; | |
193 | ddpa.err_ds = err_details; | |
194 | ddpa.cr = ri->zri_cred; | |
e59a377a | 195 | ddpa.proc = ri->zri_proc; |
d99a0153 CW |
196 | |
197 | /* | |
198 | * If there was a snapshot name conflict, then err_ds will be filled | |
199 | * with a list of conflicting snapshot names. | |
200 | */ | |
201 | err = zcp_sync_task(state, dsl_dataset_promote_check, | |
202 | dsl_dataset_promote_sync, &ddpa, sync, dsname); | |
203 | ||
204 | return (err); | |
205 | } | |
206 | ||
af073689 | 207 | static int zcp_synctask_rollback(lua_State *, boolean_t, nvlist_t *err_details); |
18168da7 | 208 | static const zcp_synctask_info_t zcp_synctask_rollback_info = { |
af073689 BL |
209 | .name = "rollback", |
210 | .func = zcp_synctask_rollback, | |
211 | .space_check = ZFS_SPACE_CHECK_RESERVED, | |
212 | .blocks_modified = 1, | |
213 | .pargs = { | |
18168da7 | 214 | {.za_name = "filesystem", .za_lua_type = LUA_TSTRING }, |
af073689 BL |
215 | {0, 0} |
216 | }, | |
217 | .kwargs = { | |
218 | {0, 0} | |
219 | } | |
220 | }; | |
221 | ||
222 | static int | |
223 | zcp_synctask_rollback(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
224 | { | |
225 | int err; | |
226 | const char *dsname = lua_tostring(state, 1); | |
227 | dsl_dataset_rollback_arg_t ddra = { 0 }; | |
228 | ||
229 | ddra.ddra_fsname = dsname; | |
230 | ddra.ddra_result = err_details; | |
231 | ||
232 | err = zcp_sync_task(state, dsl_dataset_rollback_check, | |
233 | dsl_dataset_rollback_sync, &ddra, sync, dsname); | |
234 | ||
235 | return (err); | |
236 | } | |
237 | ||
234c91c5 | 238 | static int zcp_synctask_snapshot(lua_State *, boolean_t, nvlist_t *); |
18168da7 | 239 | static const zcp_synctask_info_t zcp_synctask_snapshot_info = { |
234c91c5 CW |
240 | .name = "snapshot", |
241 | .func = zcp_synctask_snapshot, | |
242 | .pargs = { | |
243 | {.za_name = "filesystem@snapname | volume@snapname", | |
18168da7 | 244 | .za_lua_type = LUA_TSTRING }, |
234c91c5 CW |
245 | {NULL, 0} |
246 | }, | |
247 | .kwargs = { | |
248 | {NULL, 0} | |
249 | }, | |
250 | .space_check = ZFS_SPACE_CHECK_NORMAL, | |
251 | .blocks_modified = 3 | |
252 | }; | |
253 | ||
234c91c5 CW |
254 | static int |
255 | zcp_synctask_snapshot(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
256 | { | |
14e4e3cb | 257 | (void) err_details; |
234c91c5 CW |
258 | int err; |
259 | dsl_dataset_snapshot_arg_t ddsa = { 0 }; | |
260 | const char *dsname = lua_tostring(state, 1); | |
261 | zcp_run_info_t *ri = zcp_run_info(state); | |
262 | ||
5b72a38d SD |
263 | /* |
264 | * On old pools, the ZIL must not be active when a snapshot is created, | |
265 | * but we can't suspend the ZIL because we're already in syncing | |
266 | * context. | |
267 | */ | |
268 | if (spa_version(ri->zri_pool->dp_spa) < SPA_VERSION_FAST_SNAP) { | |
28caa74b | 269 | return (SET_ERROR(ENOTSUP)); |
5b72a38d SD |
270 | } |
271 | ||
234c91c5 CW |
272 | /* |
273 | * We only allow for a single snapshot rather than a list, so the | |
274 | * error list output is unnecessary. | |
275 | */ | |
276 | ddsa.ddsa_errors = NULL; | |
277 | ddsa.ddsa_props = NULL; | |
278 | ddsa.ddsa_cr = ri->zri_cred; | |
e59a377a | 279 | ddsa.ddsa_proc = ri->zri_proc; |
234c91c5 CW |
280 | ddsa.ddsa_snaps = fnvlist_alloc(); |
281 | fnvlist_add_boolean(ddsa.ddsa_snaps, dsname); | |
282 | ||
5b72a38d | 283 | zcp_cleanup_handler_t *zch = zcp_register_cleanup(state, |
23c13c7e | 284 | zcp_synctask_cleanup, ddsa.ddsa_snaps); |
234c91c5 CW |
285 | |
286 | err = zcp_sync_task(state, dsl_dataset_snapshot_check, | |
287 | dsl_dataset_snapshot_sync, &ddsa, sync, dsname); | |
288 | ||
ec213971 MA |
289 | if (err == 0) { |
290 | /* | |
291 | * We may need to create a new device minor node for this | |
292 | * dataset (if it is a zvol and the "snapdev" property is set). | |
293 | * Save it in the nvlist so that it can be processed in open | |
294 | * context. | |
295 | */ | |
296 | fnvlist_add_boolean(ri->zri_new_zvols, dsname); | |
297 | } | |
298 | ||
5b72a38d | 299 | zcp_deregister_cleanup(state, zch); |
234c91c5 CW |
300 | fnvlist_free(ddsa.ddsa_snaps); |
301 | ||
302 | return (err); | |
303 | } | |
304 | ||
ee9f3bca AG |
305 | static int zcp_synctask_rename_snapshot(lua_State *, boolean_t, nvlist_t *); |
306 | static const zcp_synctask_info_t zcp_synctask_rename_snapshot_info = { | |
307 | .name = "rename_snapshot", | |
308 | .func = zcp_synctask_rename_snapshot, | |
309 | .pargs = { | |
310 | {.za_name = "filesystem | volume", .za_lua_type = LUA_TSTRING }, | |
311 | {.za_name = "oldsnapname", .za_lua_type = LUA_TSTRING }, | |
312 | {.za_name = "newsnapname", .za_lua_type = LUA_TSTRING }, | |
313 | {NULL, 0} | |
314 | }, | |
315 | .space_check = ZFS_SPACE_CHECK_RESERVED, | |
316 | .blocks_modified = 1 | |
317 | }; | |
318 | ||
319 | static int | |
320 | zcp_synctask_rename_snapshot(lua_State *state, boolean_t sync, | |
321 | nvlist_t *err_details) | |
322 | { | |
323 | (void) err_details; | |
324 | int err; | |
325 | const char *fsname = lua_tostring(state, 1); | |
326 | const char *oldsnapname = lua_tostring(state, 2); | |
327 | const char *newsnapname = lua_tostring(state, 3); | |
328 | ||
329 | struct dsl_dataset_rename_snapshot_arg ddrsa = { 0 }; | |
330 | ddrsa.ddrsa_fsname = fsname; | |
331 | ddrsa.ddrsa_oldsnapname = oldsnapname; | |
332 | ddrsa.ddrsa_newsnapname = newsnapname; | |
333 | ddrsa.ddrsa_recursive = B_FALSE; | |
334 | ||
335 | err = zcp_sync_task(state, dsl_dataset_rename_snapshot_check, | |
336 | dsl_dataset_rename_snapshot_sync, &ddrsa, sync, NULL); | |
337 | ||
338 | return (err); | |
339 | } | |
340 | ||
e2ef1cbf JK |
341 | static int zcp_synctask_inherit_prop(lua_State *, boolean_t, |
342 | nvlist_t *err_details); | |
18168da7 | 343 | static const zcp_synctask_info_t zcp_synctask_inherit_prop_info = { |
e2ef1cbf JK |
344 | .name = "inherit", |
345 | .func = zcp_synctask_inherit_prop, | |
346 | .space_check = ZFS_SPACE_CHECK_RESERVED, | |
347 | .blocks_modified = 2, /* 2 * numprops */ | |
348 | .pargs = { | |
349 | { .za_name = "dataset", .za_lua_type = LUA_TSTRING }, | |
350 | { .za_name = "property", .za_lua_type = LUA_TSTRING }, | |
351 | { NULL, 0 } | |
352 | }, | |
353 | .kwargs = { | |
354 | { NULL, 0 } | |
355 | }, | |
356 | }; | |
357 | ||
358 | static int | |
359 | zcp_synctask_inherit_prop_check(void *arg, dmu_tx_t *tx) | |
360 | { | |
361 | zcp_inherit_prop_arg_t *args = arg; | |
362 | zfs_prop_t prop = zfs_name_to_prop(args->zipa_prop); | |
363 | ||
4ff7a8fa | 364 | if (prop == ZPROP_USERPROP) { |
e2ef1cbf JK |
365 | if (zfs_prop_user(args->zipa_prop)) |
366 | return (0); | |
367 | ||
368 | return (EINVAL); | |
369 | } | |
370 | ||
371 | if (zfs_prop_readonly(prop)) | |
372 | return (EINVAL); | |
373 | ||
374 | if (!zfs_prop_inheritable(prop)) | |
375 | return (EINVAL); | |
376 | ||
377 | return (dsl_props_set_check(&args->zipa_dpsa, tx)); | |
378 | } | |
379 | ||
380 | static void | |
381 | zcp_synctask_inherit_prop_sync(void *arg, dmu_tx_t *tx) | |
382 | { | |
383 | zcp_inherit_prop_arg_t *args = arg; | |
384 | dsl_props_set_arg_t *dpsa = &args->zipa_dpsa; | |
385 | ||
386 | dsl_props_set_sync(dpsa, tx); | |
387 | } | |
388 | ||
389 | static int | |
390 | zcp_synctask_inherit_prop(lua_State *state, boolean_t sync, | |
391 | nvlist_t *err_details) | |
392 | { | |
14e4e3cb | 393 | (void) err_details; |
e2ef1cbf JK |
394 | int err; |
395 | zcp_inherit_prop_arg_t zipa = { 0 }; | |
396 | dsl_props_set_arg_t *dpsa = &zipa.zipa_dpsa; | |
397 | ||
398 | const char *dsname = lua_tostring(state, 1); | |
399 | const char *prop = lua_tostring(state, 2); | |
400 | ||
401 | zipa.zipa_state = state; | |
402 | zipa.zipa_prop = prop; | |
403 | dpsa->dpsa_dsname = dsname; | |
404 | dpsa->dpsa_source = ZPROP_SRC_INHERITED; | |
405 | dpsa->dpsa_props = fnvlist_alloc(); | |
406 | fnvlist_add_boolean(dpsa->dpsa_props, prop); | |
407 | ||
408 | zcp_cleanup_handler_t *zch = zcp_register_cleanup(state, | |
23c13c7e | 409 | zcp_synctask_cleanup, dpsa->dpsa_props); |
e2ef1cbf JK |
410 | |
411 | err = zcp_sync_task(state, zcp_synctask_inherit_prop_check, | |
412 | zcp_synctask_inherit_prop_sync, &zipa, sync, dsname); | |
413 | ||
414 | zcp_deregister_cleanup(state, zch); | |
415 | fnvlist_free(dpsa->dpsa_props); | |
416 | ||
417 | return (err); | |
418 | } | |
419 | ||
948f0c44 | 420 | static int zcp_synctask_bookmark(lua_State *, boolean_t, nvlist_t *); |
18168da7 | 421 | static const zcp_synctask_info_t zcp_synctask_bookmark_info = { |
948f0c44 CS |
422 | .name = "bookmark", |
423 | .func = zcp_synctask_bookmark, | |
424 | .pargs = { | |
18168da7 AZ |
425 | {.za_name = "snapshot | bookmark", .za_lua_type = LUA_TSTRING }, |
426 | {.za_name = "bookmark", .za_lua_type = LUA_TSTRING }, | |
948f0c44 CS |
427 | {NULL, 0} |
428 | }, | |
429 | .kwargs = { | |
430 | {NULL, 0} | |
431 | }, | |
432 | .space_check = ZFS_SPACE_CHECK_NORMAL, | |
433 | .blocks_modified = 1, | |
434 | }; | |
435 | ||
948f0c44 CS |
436 | static int |
437 | zcp_synctask_bookmark(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
438 | { | |
14e4e3cb | 439 | (void) err_details; |
948f0c44 CS |
440 | int err; |
441 | const char *source = lua_tostring(state, 1); | |
442 | const char *new = lua_tostring(state, 2); | |
443 | ||
444 | nvlist_t *bmarks = fnvlist_alloc(); | |
445 | fnvlist_add_string(bmarks, new, source); | |
446 | ||
447 | zcp_cleanup_handler_t *zch = zcp_register_cleanup(state, | |
23c13c7e | 448 | zcp_synctask_cleanup, bmarks); |
948f0c44 CS |
449 | |
450 | dsl_bookmark_create_arg_t dbca = { | |
451 | .dbca_bmarks = bmarks, | |
452 | .dbca_errors = NULL, | |
453 | }; | |
454 | err = zcp_sync_task(state, dsl_bookmark_create_check, | |
455 | dsl_bookmark_create_sync, &dbca, sync, source); | |
456 | ||
457 | zcp_deregister_cleanup(state, zch); | |
458 | fnvlist_free(bmarks); | |
459 | ||
460 | return (err); | |
461 | } | |
462 | ||
13b5a4d5 | 463 | static int zcp_synctask_set_prop(lua_State *, boolean_t, nvlist_t *err_details); |
18168da7 | 464 | static const zcp_synctask_info_t zcp_synctask_set_prop_info = { |
13b5a4d5 JK |
465 | .name = "set_prop", |
466 | .func = zcp_synctask_set_prop, | |
467 | .space_check = ZFS_SPACE_CHECK_RESERVED, | |
468 | .blocks_modified = 2, | |
469 | .pargs = { | |
18168da7 AZ |
470 | { .za_name = "dataset", .za_lua_type = LUA_TSTRING }, |
471 | { .za_name = "property", .za_lua_type = LUA_TSTRING }, | |
472 | { .za_name = "value", .za_lua_type = LUA_TSTRING }, | |
13b5a4d5 JK |
473 | { NULL, 0 } |
474 | }, | |
475 | .kwargs = { | |
476 | { NULL, 0 } | |
477 | } | |
478 | }; | |
479 | ||
480 | static int | |
481 | zcp_synctask_set_prop(lua_State *state, boolean_t sync, nvlist_t *err_details) | |
482 | { | |
14e4e3cb | 483 | (void) err_details; |
13b5a4d5 JK |
484 | int err; |
485 | zcp_set_prop_arg_t args = { 0 }; | |
486 | ||
487 | const char *dsname = lua_tostring(state, 1); | |
488 | const char *prop = lua_tostring(state, 2); | |
489 | const char *val = lua_tostring(state, 3); | |
490 | ||
491 | args.state = state; | |
492 | args.dsname = dsname; | |
493 | args.prop = prop; | |
494 | args.val = val; | |
495 | ||
496 | err = zcp_sync_task(state, zcp_set_prop_check, zcp_set_prop_sync, | |
497 | &args, sync, dsname); | |
498 | ||
499 | return (err); | |
500 | } | |
501 | ||
d99a0153 CW |
502 | static int |
503 | zcp_synctask_wrapper(lua_State *state) | |
504 | { | |
505 | int err; | |
5b72a38d | 506 | zcp_cleanup_handler_t *zch; |
d99a0153 CW |
507 | int num_ret = 1; |
508 | nvlist_t *err_details = fnvlist_alloc(); | |
509 | ||
510 | /* | |
511 | * Make sure err_details is properly freed, even if a fatal error is | |
512 | * thrown during the synctask. | |
513 | */ | |
23c13c7e | 514 | zch = zcp_register_cleanup(state, zcp_synctask_cleanup, err_details); |
d99a0153 CW |
515 | |
516 | zcp_synctask_info_t *info = lua_touserdata(state, lua_upvalueindex(1)); | |
517 | boolean_t sync = lua_toboolean(state, lua_upvalueindex(2)); | |
518 | ||
519 | zcp_run_info_t *ri = zcp_run_info(state); | |
520 | dsl_pool_t *dp = ri->zri_pool; | |
521 | ||
522 | /* MOS space is triple-dittoed, so we multiply by 3. */ | |
cbce5813 DB |
523 | uint64_t funcspace = |
524 | ((uint64_t)info->blocks_modified << DST_AVG_BLKSHIFT) * 3; | |
d99a0153 CW |
525 | |
526 | zcp_parse_args(state, info->name, info->pargs, info->kwargs); | |
527 | ||
528 | err = 0; | |
d2734cce SD |
529 | if (info->space_check != ZFS_SPACE_CHECK_NONE) { |
530 | uint64_t quota = dsl_pool_unreserved_space(dp, | |
531 | info->space_check); | |
d99a0153 CW |
532 | uint64_t used = dsl_dir_phys(dp->dp_root_dir)->dd_used_bytes + |
533 | ri->zri_space_used; | |
534 | ||
535 | if (used + funcspace > quota) { | |
536 | err = SET_ERROR(ENOSPC); | |
537 | } | |
538 | } | |
539 | ||
540 | if (err == 0) { | |
541 | err = info->func(state, sync, err_details); | |
542 | } | |
543 | ||
544 | if (err == 0) { | |
545 | ri->zri_space_used += funcspace; | |
546 | } | |
547 | ||
548 | lua_pushnumber(state, (lua_Number)err); | |
549 | if (fnvlist_num_pairs(err_details) > 0) { | |
550 | (void) zcp_nvlist_to_lua(state, err_details, NULL, 0); | |
551 | num_ret++; | |
552 | } | |
553 | ||
5b72a38d | 554 | zcp_deregister_cleanup(state, zch); |
d99a0153 CW |
555 | fnvlist_free(err_details); |
556 | ||
557 | return (num_ret); | |
558 | } | |
559 | ||
560 | int | |
561 | zcp_load_synctask_lib(lua_State *state, boolean_t sync) | |
562 | { | |
18168da7 | 563 | const zcp_synctask_info_t *zcp_synctask_funcs[] = { |
d99a0153 CW |
564 | &zcp_synctask_destroy_info, |
565 | &zcp_synctask_promote_info, | |
af073689 | 566 | &zcp_synctask_rollback_info, |
234c91c5 | 567 | &zcp_synctask_snapshot_info, |
ee9f3bca | 568 | &zcp_synctask_rename_snapshot_info, |
e2ef1cbf | 569 | &zcp_synctask_inherit_prop_info, |
948f0c44 | 570 | &zcp_synctask_bookmark_info, |
13b5a4d5 | 571 | &zcp_synctask_set_prop_info, |
d99a0153 CW |
572 | NULL |
573 | }; | |
574 | ||
575 | lua_newtable(state); | |
576 | ||
18168da7 AZ |
577 | for (int i = 0; zcp_synctask_funcs[i] != NULL; i++) { |
578 | const zcp_synctask_info_t *info = zcp_synctask_funcs[i]; | |
579 | lua_pushlightuserdata(state, (void *)(uintptr_t)info); | |
d99a0153 CW |
580 | lua_pushboolean(state, sync); |
581 | lua_pushcclosure(state, &zcp_synctask_wrapper, 2); | |
582 | lua_setfield(state, -2, info->name); | |
d99a0153 CW |
583 | } |
584 | ||
585 | return (1); | |
586 | } |