1dfc11533SChris Williamson /* 2dfc11533SChris Williamson * CDDL HEADER START 3dfc11533SChris Williamson * 4dfc11533SChris Williamson * This file and its contents are supplied under the terms of the 5dfc11533SChris Williamson * Common Development and Distribution License ("CDDL"), version 1.0. 6dfc11533SChris Williamson * You may only use this file in accordance with the terms of version 7dfc11533SChris Williamson * 1.0 of the CDDL. 8dfc11533SChris Williamson * 9dfc11533SChris Williamson * A full copy of the text of the CDDL should have accompanied this 10dfc11533SChris Williamson * source. A copy of the CDDL is also available via the Internet at 11dfc11533SChris Williamson * http://www.illumos.org/license/CDDL. 12dfc11533SChris Williamson * 13dfc11533SChris Williamson * CDDL HEADER END 14dfc11533SChris Williamson */ 15dfc11533SChris Williamson 16dfc11533SChris Williamson /* 17000cce6bSBrad Lewis * Copyright (c) 2016, 2017 by Delphix. All rights reserved. 18*2d85dedbSJason King * Copyright 2020 Joyent, Inc. 19dfc11533SChris Williamson */ 20dfc11533SChris Williamson 21dfc11533SChris Williamson #include "lua.h" 22dfc11533SChris Williamson #include "lauxlib.h" 23dfc11533SChris Williamson 24dfc11533SChris Williamson #include <sys/zcp.h> 25dfc11533SChris Williamson #include <sys/dsl_dir.h> 26dfc11533SChris Williamson #include <sys/dsl_pool.h> 27dfc11533SChris Williamson #include <sys/dsl_prop.h> 28dfc11533SChris Williamson #include <sys/dsl_synctask.h> 29dfc11533SChris Williamson #include <sys/dsl_dataset.h> 30dfc11533SChris Williamson #include <sys/dsl_bookmark.h> 31dfc11533SChris Williamson #include <sys/dsl_destroy.h> 32dfc11533SChris Williamson #include <sys/dmu_objset.h> 33dfc11533SChris Williamson #include <sys/zfs_znode.h> 34dfc11533SChris Williamson #include <sys/zfeature.h> 35dfc11533SChris Williamson #include <sys/metaslab.h> 36dfc11533SChris Williamson 37dfc11533SChris Williamson #define DST_AVG_BLKSHIFT 14 38dfc11533SChris Williamson 39*2d85dedbSJason King typedef struct zcp_inherit_prop_arg { 40*2d85dedbSJason King lua_State *zipa_state; 41*2d85dedbSJason King const char *zipa_prop; 42*2d85dedbSJason King dsl_props_set_arg_t zipa_dpsa; 43*2d85dedbSJason King } zcp_inherit_prop_arg_t; 44*2d85dedbSJason King 45dfc11533SChris Williamson typedef int (zcp_synctask_func_t)(lua_State *, boolean_t, nvlist_t *); 46dfc11533SChris Williamson typedef struct zcp_synctask_info { 47dfc11533SChris Williamson const char *name; 48dfc11533SChris Williamson zcp_synctask_func_t *func; 49dfc11533SChris Williamson const zcp_arg_t pargs[4]; 50dfc11533SChris Williamson const zcp_arg_t kwargs[2]; 512840dce1SChris Williamson zfs_space_check_t space_check; 522840dce1SChris Williamson int blocks_modified; 53dfc11533SChris Williamson } zcp_synctask_info_t; 54dfc11533SChris Williamson 55dfc11533SChris Williamson /* 56dfc11533SChris Williamson * Generic synctask interface for channel program syncfuncs. 57dfc11533SChris Williamson * 58dfc11533SChris Williamson * To perform some action in syncing context, we'd generally call 59dfc11533SChris Williamson * dsl_sync_task(), but since the Lua script is already running inside a 60dfc11533SChris Williamson * synctask we need to leave out some actions (such as acquiring the config 61dfc11533SChris Williamson * rwlock and performing space checks). 62dfc11533SChris Williamson * 63dfc11533SChris Williamson * If 'sync' is false, executes a dry run and returns the error code. 64dfc11533SChris Williamson * 65a3b28680SSerapheim Dimitropoulos * If we are not running in syncing context and we are not doing a dry run 66a3b28680SSerapheim Dimitropoulos * (meaning we are running a zfs.sync function in open-context) then we 67a3b28680SSerapheim Dimitropoulos * return a Lua error. 68a3b28680SSerapheim Dimitropoulos * 69dfc11533SChris Williamson * This function also handles common fatal error cases for channel program 70dfc11533SChris Williamson * library functions. If a fatal error occurs, err_dsname will be the dataset 71dfc11533SChris Williamson * name reported in error messages, if supplied. 72dfc11533SChris Williamson */ 73dfc11533SChris Williamson static int 74dfc11533SChris Williamson zcp_sync_task(lua_State *state, dsl_checkfunc_t *checkfunc, 75dfc11533SChris Williamson dsl_syncfunc_t *syncfunc, void *arg, boolean_t sync, const char *err_dsname) 76dfc11533SChris Williamson { 77dfc11533SChris Williamson int err; 78dfc11533SChris Williamson zcp_run_info_t *ri = zcp_run_info(state); 79dfc11533SChris Williamson 80dfc11533SChris Williamson err = checkfunc(arg, ri->zri_tx); 81dfc11533SChris Williamson if (!sync) 82dfc11533SChris Williamson return (err); 83dfc11533SChris Williamson 84a3b28680SSerapheim Dimitropoulos if (!ri->zri_sync) { 85a3b28680SSerapheim Dimitropoulos return (luaL_error(state, "running functions from the zfs.sync " 86a3b28680SSerapheim Dimitropoulos "submodule requires passing sync=TRUE to " 87a3b28680SSerapheim Dimitropoulos "lzc_channel_program() (i.e. do not specify the \"-n\" " 88a3b28680SSerapheim Dimitropoulos "command line argument)")); 89a3b28680SSerapheim Dimitropoulos } 90a3b28680SSerapheim Dimitropoulos 91dfc11533SChris Williamson if (err == 0) { 92dfc11533SChris Williamson syncfunc(arg, ri->zri_tx); 93dfc11533SChris Williamson } else if (err == EIO) { 94dfc11533SChris Williamson if (err_dsname != NULL) { 95dfc11533SChris Williamson return (luaL_error(state, 96dfc11533SChris Williamson "I/O error while accessing dataset '%s'", 97dfc11533SChris Williamson err_dsname)); 98dfc11533SChris Williamson } else { 99dfc11533SChris Williamson return (luaL_error(state, 100dfc11533SChris Williamson "I/O error while accessing dataset.")); 101dfc11533SChris Williamson } 102dfc11533SChris Williamson } 103dfc11533SChris Williamson 104dfc11533SChris Williamson return (err); 105dfc11533SChris Williamson } 106dfc11533SChris Williamson 107dfc11533SChris Williamson 108dfc11533SChris Williamson static int zcp_synctask_destroy(lua_State *, boolean_t, nvlist_t *); 109dfc11533SChris Williamson static zcp_synctask_info_t zcp_synctask_destroy_info = { 110dfc11533SChris Williamson .name = "destroy", 111dfc11533SChris Williamson .func = zcp_synctask_destroy, 112dfc11533SChris Williamson .pargs = { 113dfc11533SChris Williamson {.za_name = "filesystem | snapshot", .za_lua_type = LUA_TSTRING}, 114dd328bf6SToomas Soome {NULL, 0} 115dfc11533SChris Williamson }, 116dfc11533SChris Williamson .kwargs = { 117dfc11533SChris Williamson {.za_name = "defer", .za_lua_type = LUA_TBOOLEAN}, 118dd328bf6SToomas Soome {NULL, 0} 1192840dce1SChris Williamson }, 12086714001SSerapheim Dimitropoulos .space_check = ZFS_SPACE_CHECK_DESTROY, 1212840dce1SChris Williamson .blocks_modified = 0 122dfc11533SChris Williamson }; 123dfc11533SChris Williamson 124dfc11533SChris Williamson /* ARGSUSED */ 125dfc11533SChris Williamson static int 126dfc11533SChris Williamson zcp_synctask_destroy(lua_State *state, boolean_t sync, nvlist_t *err_details) 127dfc11533SChris Williamson { 128dfc11533SChris Williamson int err; 129dfc11533SChris Williamson const char *dsname = lua_tostring(state, 1); 130dfc11533SChris Williamson 131dfc11533SChris Williamson boolean_t issnap = (strchr(dsname, '@') != NULL); 132dfc11533SChris Williamson 133dfc11533SChris Williamson if (!issnap && !lua_isnil(state, 2)) { 134dfc11533SChris Williamson return (luaL_error(state, 135dfc11533SChris Williamson "'deferred' kwarg only supported for snapshots: %s", 136dfc11533SChris Williamson dsname)); 137dfc11533SChris Williamson } 138dfc11533SChris Williamson 139dfc11533SChris Williamson if (issnap) { 140dfc11533SChris Williamson dsl_destroy_snapshot_arg_t ddsa = { 0 }; 141dfc11533SChris Williamson ddsa.ddsa_name = dsname; 142dfc11533SChris Williamson if (!lua_isnil(state, 2)) { 143dfc11533SChris Williamson ddsa.ddsa_defer = lua_toboolean(state, 2); 144dfc11533SChris Williamson } else { 145dfc11533SChris Williamson ddsa.ddsa_defer = B_FALSE; 146dfc11533SChris Williamson } 147dfc11533SChris Williamson 148dfc11533SChris Williamson err = zcp_sync_task(state, dsl_destroy_snapshot_check, 149dfc11533SChris Williamson dsl_destroy_snapshot_sync, &ddsa, sync, dsname); 150dfc11533SChris Williamson } else { 151dfc11533SChris Williamson dsl_destroy_head_arg_t ddha = { 0 }; 152dfc11533SChris Williamson ddha.ddha_name = dsname; 153dfc11533SChris Williamson 154dfc11533SChris Williamson err = zcp_sync_task(state, dsl_destroy_head_check, 155dfc11533SChris Williamson dsl_destroy_head_sync, &ddha, sync, dsname); 156dfc11533SChris Williamson } 157dfc11533SChris Williamson 158dfc11533SChris Williamson return (err); 159dfc11533SChris Williamson } 160dfc11533SChris Williamson 1612840dce1SChris Williamson static int zcp_synctask_promote(lua_State *, boolean_t, nvlist_t *); 162dfc11533SChris Williamson static zcp_synctask_info_t zcp_synctask_promote_info = { 163dfc11533SChris Williamson .name = "promote", 164dfc11533SChris Williamson .func = zcp_synctask_promote, 165dfc11533SChris Williamson .pargs = { 166dfc11533SChris Williamson {.za_name = "clone", .za_lua_type = LUA_TSTRING}, 167dd328bf6SToomas Soome {NULL, 0} 168dfc11533SChris Williamson }, 169dfc11533SChris Williamson .kwargs = { 170dd328bf6SToomas Soome {NULL, 0} 1712840dce1SChris Williamson }, 1722840dce1SChris Williamson .space_check = ZFS_SPACE_CHECK_RESERVED, 1732840dce1SChris Williamson .blocks_modified = 3 174dfc11533SChris Williamson }; 175dfc11533SChris Williamson 176dfc11533SChris Williamson static int 177dfc11533SChris Williamson zcp_synctask_promote(lua_State *state, boolean_t sync, nvlist_t *err_details) 178dfc11533SChris Williamson { 179dfc11533SChris Williamson int err; 180dfc11533SChris Williamson dsl_dataset_promote_arg_t ddpa = { 0 }; 181dfc11533SChris Williamson const char *dsname = lua_tostring(state, 1); 182dfc11533SChris Williamson zcp_run_info_t *ri = zcp_run_info(state); 183dfc11533SChris Williamson 184dfc11533SChris Williamson ddpa.ddpa_clonename = dsname; 185dfc11533SChris Williamson ddpa.err_ds = err_details; 186dfc11533SChris Williamson ddpa.cr = ri->zri_cred; 187dfc11533SChris Williamson 188dfc11533SChris Williamson /* 189dfc11533SChris Williamson * If there was a snapshot name conflict, then err_ds will be filled 190dfc11533SChris Williamson * with a list of conflicting snapshot names. 191dfc11533SChris Williamson */ 192dfc11533SChris Williamson err = zcp_sync_task(state, dsl_dataset_promote_check, 193dfc11533SChris Williamson dsl_dataset_promote_sync, &ddpa, sync, dsname); 194dfc11533SChris Williamson 195dfc11533SChris Williamson return (err); 196dfc11533SChris Williamson } 197dfc11533SChris Williamson 198000cce6bSBrad Lewis static int zcp_synctask_rollback(lua_State *, boolean_t, nvlist_t *err_details); 199000cce6bSBrad Lewis static zcp_synctask_info_t zcp_synctask_rollback_info = { 200000cce6bSBrad Lewis .name = "rollback", 201000cce6bSBrad Lewis .func = zcp_synctask_rollback, 202000cce6bSBrad Lewis .space_check = ZFS_SPACE_CHECK_RESERVED, 203000cce6bSBrad Lewis .blocks_modified = 1, 204000cce6bSBrad Lewis .pargs = { 205000cce6bSBrad Lewis {.za_name = "filesystem", .za_lua_type = LUA_TSTRING}, 206dd328bf6SToomas Soome {NULL, 0} 207000cce6bSBrad Lewis }, 208000cce6bSBrad Lewis .kwargs = { 209dd328bf6SToomas Soome {NULL, 0} 210000cce6bSBrad Lewis } 211000cce6bSBrad Lewis }; 212000cce6bSBrad Lewis 213000cce6bSBrad Lewis static int 214000cce6bSBrad Lewis zcp_synctask_rollback(lua_State *state, boolean_t sync, nvlist_t *err_details) 215000cce6bSBrad Lewis { 216000cce6bSBrad Lewis int err; 217000cce6bSBrad Lewis const char *dsname = lua_tostring(state, 1); 218000cce6bSBrad Lewis dsl_dataset_rollback_arg_t ddra = { 0 }; 219000cce6bSBrad Lewis 220000cce6bSBrad Lewis ddra.ddra_fsname = dsname; 221000cce6bSBrad Lewis ddra.ddra_result = err_details; 222000cce6bSBrad Lewis 223000cce6bSBrad Lewis err = zcp_sync_task(state, dsl_dataset_rollback_check, 224000cce6bSBrad Lewis dsl_dataset_rollback_sync, &ddra, sync, dsname); 225000cce6bSBrad Lewis 226000cce6bSBrad Lewis return (err); 227000cce6bSBrad Lewis } 228000cce6bSBrad Lewis 2292840dce1SChris Williamson static int zcp_synctask_snapshot(lua_State *, boolean_t, nvlist_t *); 2302840dce1SChris Williamson static zcp_synctask_info_t zcp_synctask_snapshot_info = { 2312840dce1SChris Williamson .name = "snapshot", 2322840dce1SChris Williamson .func = zcp_synctask_snapshot, 2332840dce1SChris Williamson .pargs = { 2342840dce1SChris Williamson {.za_name = "filesystem@snapname | volume@snapname", 2352840dce1SChris Williamson .za_lua_type = LUA_TSTRING}, 236dd328bf6SToomas Soome {NULL, 0} 2372840dce1SChris Williamson }, 2382840dce1SChris Williamson .kwargs = { 239dd328bf6SToomas Soome {NULL, 0} 2402840dce1SChris Williamson }, 2412840dce1SChris Williamson .space_check = ZFS_SPACE_CHECK_NORMAL, 2422840dce1SChris Williamson .blocks_modified = 3 2432840dce1SChris Williamson }; 2442840dce1SChris Williamson 2452840dce1SChris Williamson /* ARGSUSED */ 2462840dce1SChris Williamson static int 2472840dce1SChris Williamson zcp_synctask_snapshot(lua_State *state, boolean_t sync, nvlist_t *err_details) 2482840dce1SChris Williamson { 2492840dce1SChris Williamson int err; 2502840dce1SChris Williamson dsl_dataset_snapshot_arg_t ddsa = { 0 }; 2512840dce1SChris Williamson const char *dsname = lua_tostring(state, 1); 2522840dce1SChris Williamson zcp_run_info_t *ri = zcp_run_info(state); 2532840dce1SChris Williamson 254a3b28680SSerapheim Dimitropoulos /* 255a3b28680SSerapheim Dimitropoulos * On old pools, the ZIL must not be active when a snapshot is created, 256a3b28680SSerapheim Dimitropoulos * but we can't suspend the ZIL because we're already in syncing 257a3b28680SSerapheim Dimitropoulos * context. 258a3b28680SSerapheim Dimitropoulos */ 259a3b28680SSerapheim Dimitropoulos if (spa_version(ri->zri_pool->dp_spa) < SPA_VERSION_FAST_SNAP) { 260a3b28680SSerapheim Dimitropoulos return (ENOTSUP); 261a3b28680SSerapheim Dimitropoulos } 262a3b28680SSerapheim Dimitropoulos 2632840dce1SChris Williamson /* 2642840dce1SChris Williamson * We only allow for a single snapshot rather than a list, so the 2652840dce1SChris Williamson * error list output is unnecessary. 2662840dce1SChris Williamson */ 2672840dce1SChris Williamson ddsa.ddsa_errors = NULL; 2682840dce1SChris Williamson ddsa.ddsa_props = NULL; 2692840dce1SChris Williamson ddsa.ddsa_cr = ri->zri_cred; 2702840dce1SChris Williamson ddsa.ddsa_snaps = fnvlist_alloc(); 2712840dce1SChris Williamson fnvlist_add_boolean(ddsa.ddsa_snaps, dsname); 2722840dce1SChris Williamson 273a3b28680SSerapheim Dimitropoulos zcp_cleanup_handler_t *zch = zcp_register_cleanup(state, 274a3b28680SSerapheim Dimitropoulos (zcp_cleanup_t *)&fnvlist_free, ddsa.ddsa_snaps); 2752840dce1SChris Williamson 2762840dce1SChris Williamson err = zcp_sync_task(state, dsl_dataset_snapshot_check, 2772840dce1SChris Williamson dsl_dataset_snapshot_sync, &ddsa, sync, dsname); 2782840dce1SChris Williamson 279a3b28680SSerapheim Dimitropoulos zcp_deregister_cleanup(state, zch); 2802840dce1SChris Williamson fnvlist_free(ddsa.ddsa_snaps); 2812840dce1SChris Williamson 2822840dce1SChris Williamson return (err); 2832840dce1SChris Williamson } 2842840dce1SChris Williamson 285*2d85dedbSJason King static int zcp_synctask_inherit_prop(lua_State *, boolean_t, 286*2d85dedbSJason King nvlist_t *err_details); 287*2d85dedbSJason King static zcp_synctask_info_t zcp_synctask_inherit_prop_info = { 288*2d85dedbSJason King .name = "inherit", 289*2d85dedbSJason King .func = zcp_synctask_inherit_prop, 290*2d85dedbSJason King .space_check = ZFS_SPACE_CHECK_RESERVED, 291*2d85dedbSJason King .blocks_modified = 2, /* 2 * numprops */ 292*2d85dedbSJason King .pargs = { 293*2d85dedbSJason King { .za_name = "dataset", .za_lua_type = LUA_TSTRING }, 294*2d85dedbSJason King { .za_name = "property", .za_lua_type = LUA_TSTRING }, 295*2d85dedbSJason King { NULL, 0 } 296*2d85dedbSJason King }, 297*2d85dedbSJason King .kwargs = { 298*2d85dedbSJason King { NULL, 0 } 299*2d85dedbSJason King }, 300*2d85dedbSJason King }; 301*2d85dedbSJason King 302*2d85dedbSJason King static int 303*2d85dedbSJason King zcp_synctask_inherit_prop_check(void *arg, dmu_tx_t *tx) 304*2d85dedbSJason King { 305*2d85dedbSJason King zcp_inherit_prop_arg_t *args = arg; 306*2d85dedbSJason King zfs_prop_t prop = zfs_name_to_prop(args->zipa_prop); 307*2d85dedbSJason King 308*2d85dedbSJason King if (prop == ZPROP_INVAL) { 309*2d85dedbSJason King if (zfs_prop_user(args->zipa_prop)) 310*2d85dedbSJason King return (0); 311*2d85dedbSJason King 312*2d85dedbSJason King return (EINVAL); 313*2d85dedbSJason King } 314*2d85dedbSJason King 315*2d85dedbSJason King if (zfs_prop_readonly(prop)) 316*2d85dedbSJason King return (EINVAL); 317*2d85dedbSJason King 318*2d85dedbSJason King if (!zfs_prop_inheritable(prop)) 319*2d85dedbSJason King return (EINVAL); 320*2d85dedbSJason King 321*2d85dedbSJason King return (dsl_props_set_check(&args->zipa_dpsa, tx)); 322*2d85dedbSJason King } 323*2d85dedbSJason King 324*2d85dedbSJason King static void 325*2d85dedbSJason King zcp_synctask_inherit_prop_sync(void *arg, dmu_tx_t *tx) 326*2d85dedbSJason King { 327*2d85dedbSJason King zcp_inherit_prop_arg_t *args = arg; 328*2d85dedbSJason King dsl_props_set_arg_t *dpsa = &args->zipa_dpsa; 329*2d85dedbSJason King 330*2d85dedbSJason King dsl_props_set_sync(dpsa, tx); 331*2d85dedbSJason King } 332*2d85dedbSJason King 333*2d85dedbSJason King static int 334*2d85dedbSJason King zcp_synctask_inherit_prop(lua_State *state, boolean_t sync, 335*2d85dedbSJason King nvlist_t *err_details) 336*2d85dedbSJason King { 337*2d85dedbSJason King int err; 338*2d85dedbSJason King zcp_inherit_prop_arg_t zipa = { 0 }; 339*2d85dedbSJason King dsl_props_set_arg_t *dpsa = &zipa.zipa_dpsa; 340*2d85dedbSJason King 341*2d85dedbSJason King const char *dsname = lua_tostring(state, 1); 342*2d85dedbSJason King const char *prop = lua_tostring(state, 2); 343*2d85dedbSJason King 344*2d85dedbSJason King zipa.zipa_state = state; 345*2d85dedbSJason King zipa.zipa_prop = prop; 346*2d85dedbSJason King dpsa->dpsa_dsname = dsname; 347*2d85dedbSJason King dpsa->dpsa_source = ZPROP_SRC_INHERITED; 348*2d85dedbSJason King dpsa->dpsa_props = fnvlist_alloc(); 349*2d85dedbSJason King fnvlist_add_boolean(dpsa->dpsa_props, prop); 350*2d85dedbSJason King 351*2d85dedbSJason King zcp_cleanup_handler_t *zch = zcp_register_cleanup(state, 352*2d85dedbSJason King (zcp_cleanup_t *)&fnvlist_free, dpsa->dpsa_props); 353*2d85dedbSJason King 354*2d85dedbSJason King err = zcp_sync_task(state, zcp_synctask_inherit_prop_check, 355*2d85dedbSJason King zcp_synctask_inherit_prop_sync, &zipa, sync, dsname); 356*2d85dedbSJason King 357*2d85dedbSJason King zcp_deregister_cleanup(state, zch); 358*2d85dedbSJason King fnvlist_free(dpsa->dpsa_props); 359*2d85dedbSJason King 360*2d85dedbSJason King return (err); 361*2d85dedbSJason King } 362*2d85dedbSJason King 363dfc11533SChris Williamson static int 364dfc11533SChris Williamson zcp_synctask_wrapper(lua_State *state) 365dfc11533SChris Williamson { 366dfc11533SChris Williamson int err; 367a3b28680SSerapheim Dimitropoulos zcp_cleanup_handler_t *zch; 368dfc11533SChris Williamson int num_ret = 1; 369dfc11533SChris Williamson nvlist_t *err_details = fnvlist_alloc(); 370dfc11533SChris Williamson 371dfc11533SChris Williamson /* 372dfc11533SChris Williamson * Make sure err_details is properly freed, even if a fatal error is 373dfc11533SChris Williamson * thrown during the synctask. 374dfc11533SChris Williamson */ 375a3b28680SSerapheim Dimitropoulos zch = zcp_register_cleanup(state, 376a3b28680SSerapheim Dimitropoulos (zcp_cleanup_t *)&fnvlist_free, err_details); 377dfc11533SChris Williamson 378dfc11533SChris Williamson zcp_synctask_info_t *info = lua_touserdata(state, lua_upvalueindex(1)); 379dfc11533SChris Williamson boolean_t sync = lua_toboolean(state, lua_upvalueindex(2)); 380dfc11533SChris Williamson 381dfc11533SChris Williamson zcp_run_info_t *ri = zcp_run_info(state); 382dfc11533SChris Williamson dsl_pool_t *dp = ri->zri_pool; 383dfc11533SChris Williamson 384dfc11533SChris Williamson /* MOS space is triple-dittoed, so we multiply by 3. */ 385dfc11533SChris Williamson uint64_t funcspace = (info->blocks_modified << DST_AVG_BLKSHIFT) * 3; 386dfc11533SChris Williamson 387dfc11533SChris Williamson zcp_parse_args(state, info->name, info->pargs, info->kwargs); 388dfc11533SChris Williamson 389dfc11533SChris Williamson err = 0; 39086714001SSerapheim Dimitropoulos if (info->space_check != ZFS_SPACE_CHECK_NONE) { 39186714001SSerapheim Dimitropoulos uint64_t quota = dsl_pool_unreserved_space(dp, 39286714001SSerapheim Dimitropoulos info->space_check); 393dfc11533SChris Williamson uint64_t used = dsl_dir_phys(dp->dp_root_dir)->dd_used_bytes + 394dfc11533SChris Williamson ri->zri_space_used; 395dfc11533SChris Williamson 396dfc11533SChris Williamson if (used + funcspace > quota) { 397dfc11533SChris Williamson err = SET_ERROR(ENOSPC); 398dfc11533SChris Williamson } 399dfc11533SChris Williamson } 400dfc11533SChris Williamson 401dfc11533SChris Williamson if (err == 0) { 402dfc11533SChris Williamson err = info->func(state, sync, err_details); 403dfc11533SChris Williamson } 404dfc11533SChris Williamson 405dfc11533SChris Williamson if (err == 0) { 406dfc11533SChris Williamson ri->zri_space_used += funcspace; 407dfc11533SChris Williamson } 408dfc11533SChris Williamson 409dfc11533SChris Williamson lua_pushnumber(state, (lua_Number)err); 410dfc11533SChris Williamson if (fnvlist_num_pairs(err_details) > 0) { 411dfc11533SChris Williamson (void) zcp_nvlist_to_lua(state, err_details, NULL, 0); 412dfc11533SChris Williamson num_ret++; 413dfc11533SChris Williamson } 414dfc11533SChris Williamson 415a3b28680SSerapheim Dimitropoulos zcp_deregister_cleanup(state, zch); 416dfc11533SChris Williamson fnvlist_free(err_details); 417dfc11533SChris Williamson 418dfc11533SChris Williamson return (num_ret); 419dfc11533SChris Williamson } 420dfc11533SChris Williamson 421dfc11533SChris Williamson int 422dfc11533SChris Williamson zcp_load_synctask_lib(lua_State *state, boolean_t sync) 423dfc11533SChris Williamson { 424dfc11533SChris Williamson int i; 425dfc11533SChris Williamson zcp_synctask_info_t *zcp_synctask_funcs[] = { 426dfc11533SChris Williamson &zcp_synctask_destroy_info, 427dfc11533SChris Williamson &zcp_synctask_promote_info, 428000cce6bSBrad Lewis &zcp_synctask_rollback_info, 4292840dce1SChris Williamson &zcp_synctask_snapshot_info, 430*2d85dedbSJason King &zcp_synctask_inherit_prop_info, 431dfc11533SChris Williamson NULL 432dfc11533SChris Williamson }; 433dfc11533SChris Williamson 434dfc11533SChris Williamson lua_newtable(state); 435dfc11533SChris Williamson 436dfc11533SChris Williamson for (i = 0; zcp_synctask_funcs[i] != NULL; i++) { 437dfc11533SChris Williamson zcp_synctask_info_t *info = zcp_synctask_funcs[i]; 438dfc11533SChris Williamson lua_pushlightuserdata(state, info); 439dfc11533SChris Williamson lua_pushboolean(state, sync); 440dfc11533SChris Williamson lua_pushcclosure(state, &zcp_synctask_wrapper, 2); 441dfc11533SChris Williamson lua_setfield(state, -2, info->name); 442dfc11533SChris Williamson info++; 443dfc11533SChris Williamson } 444dfc11533SChris Williamson 445dfc11533SChris Williamson return (1); 446dfc11533SChris Williamson } 447