1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5*441d80aaSlling * Common Development and Distribution License (the "License"). 6*441d80aaSlling * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 22c67d9675Seschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 27fa9e4066Sahrens 28fa9e4066Sahrens #include <sys/types.h> 29fa9e4066Sahrens #include <sys/param.h> 30fa9e4066Sahrens #include <sys/errno.h> 31fa9e4066Sahrens #include <sys/uio.h> 32fa9e4066Sahrens #include <sys/buf.h> 33fa9e4066Sahrens #include <sys/modctl.h> 34fa9e4066Sahrens #include <sys/open.h> 35fa9e4066Sahrens #include <sys/file.h> 36fa9e4066Sahrens #include <sys/kmem.h> 37fa9e4066Sahrens #include <sys/conf.h> 38fa9e4066Sahrens #include <sys/cmn_err.h> 39fa9e4066Sahrens #include <sys/stat.h> 40fa9e4066Sahrens #include <sys/zfs_ioctl.h> 41fa9e4066Sahrens #include <sys/zap.h> 42fa9e4066Sahrens #include <sys/spa.h> 43fa9e4066Sahrens #include <sys/vdev.h> 44fa9e4066Sahrens #include <sys/dmu.h> 45fa9e4066Sahrens #include <sys/dsl_dir.h> 46fa9e4066Sahrens #include <sys/dsl_dataset.h> 47fa9e4066Sahrens #include <sys/dsl_prop.h> 48fa9e4066Sahrens #include <sys/ddi.h> 49fa9e4066Sahrens #include <sys/sunddi.h> 50fa9e4066Sahrens #include <sys/sunldi.h> 51fa9e4066Sahrens #include <sys/policy.h> 52fa9e4066Sahrens #include <sys/zone.h> 53fa9e4066Sahrens #include <sys/nvpair.h> 54fa9e4066Sahrens #include <sys/pathname.h> 55fa9e4066Sahrens #include <sys/mount.h> 56fa9e4066Sahrens #include <sys/sdt.h> 57fa9e4066Sahrens #include <sys/fs/zfs.h> 58fa9e4066Sahrens #include <sys/zfs_ctldir.h> 59fa9e4066Sahrens 60fa9e4066Sahrens #include "zfs_namecheck.h" 61fa9e4066Sahrens 62fa9e4066Sahrens extern struct modlfs zfs_modlfs; 63fa9e4066Sahrens 64fa9e4066Sahrens extern void zfs_init(void); 65fa9e4066Sahrens extern void zfs_fini(void); 66fa9e4066Sahrens 67fa9e4066Sahrens ldi_ident_t zfs_li = NULL; 68fa9e4066Sahrens dev_info_t *zfs_dip; 69fa9e4066Sahrens 70fa9e4066Sahrens typedef int zfs_ioc_func_t(zfs_cmd_t *); 71fa9e4066Sahrens typedef int zfs_secpolicy_func_t(const char *, const char *, cred_t *); 72fa9e4066Sahrens 73fa9e4066Sahrens typedef struct zfs_ioc_vec { 74fa9e4066Sahrens zfs_ioc_func_t *zvec_func; 75fa9e4066Sahrens zfs_secpolicy_func_t *zvec_secpolicy; 76fa9e4066Sahrens enum { 77fa9e4066Sahrens no_name, 78fa9e4066Sahrens pool_name, 79fa9e4066Sahrens dataset_name 80fa9e4066Sahrens } zvec_namecheck; 81fa9e4066Sahrens } zfs_ioc_vec_t; 82fa9e4066Sahrens 83fa9e4066Sahrens /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 84fa9e4066Sahrens void 85fa9e4066Sahrens __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 86fa9e4066Sahrens { 87fa9e4066Sahrens const char *newfile; 88fa9e4066Sahrens char buf[256]; 89fa9e4066Sahrens va_list adx; 90fa9e4066Sahrens 91fa9e4066Sahrens /* 92fa9e4066Sahrens * Get rid of annoying "../common/" prefix to filename. 93fa9e4066Sahrens */ 94fa9e4066Sahrens newfile = strrchr(file, '/'); 95fa9e4066Sahrens if (newfile != NULL) { 96fa9e4066Sahrens newfile = newfile + 1; /* Get rid of leading / */ 97fa9e4066Sahrens } else { 98fa9e4066Sahrens newfile = file; 99fa9e4066Sahrens } 100fa9e4066Sahrens 101fa9e4066Sahrens va_start(adx, fmt); 102fa9e4066Sahrens (void) vsnprintf(buf, sizeof (buf), fmt, adx); 103fa9e4066Sahrens va_end(adx); 104fa9e4066Sahrens 105fa9e4066Sahrens /* 106fa9e4066Sahrens * To get this data, use the zfs-dprintf probe as so: 107fa9e4066Sahrens * dtrace -q -n 'zfs-dprintf \ 108fa9e4066Sahrens * /stringof(arg0) == "dbuf.c"/ \ 109fa9e4066Sahrens * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 110fa9e4066Sahrens * arg0 = file name 111fa9e4066Sahrens * arg1 = function name 112fa9e4066Sahrens * arg2 = line number 113fa9e4066Sahrens * arg3 = message 114fa9e4066Sahrens */ 115fa9e4066Sahrens DTRACE_PROBE4(zfs__dprintf, 116fa9e4066Sahrens char *, newfile, char *, func, int, line, char *, buf); 117fa9e4066Sahrens } 118fa9e4066Sahrens 119fa9e4066Sahrens /* 120fa9e4066Sahrens * Policy for top-level read operations (list pools). Requires no privileges, 121fa9e4066Sahrens * and can be used in the local zone, as there is no associated dataset. 122fa9e4066Sahrens */ 123fa9e4066Sahrens /* ARGSUSED */ 124fa9e4066Sahrens static int 125fa9e4066Sahrens zfs_secpolicy_none(const char *unused1, const char *unused2, cred_t *cr) 126fa9e4066Sahrens { 127fa9e4066Sahrens return (0); 128fa9e4066Sahrens } 129fa9e4066Sahrens 130fa9e4066Sahrens /* 131fa9e4066Sahrens * Policy for dataset read operations (list children, get statistics). Requires 132fa9e4066Sahrens * no privileges, but must be visible in the local zone. 133fa9e4066Sahrens */ 134fa9e4066Sahrens /* ARGSUSED */ 135fa9e4066Sahrens static int 136fa9e4066Sahrens zfs_secpolicy_read(const char *dataset, const char *unused, cred_t *cr) 137fa9e4066Sahrens { 138fa9e4066Sahrens if (INGLOBALZONE(curproc) || 139fa9e4066Sahrens zone_dataset_visible(dataset, NULL)) 140fa9e4066Sahrens return (0); 141fa9e4066Sahrens 142fa9e4066Sahrens return (ENOENT); 143fa9e4066Sahrens } 144fa9e4066Sahrens 145fa9e4066Sahrens static int 146fa9e4066Sahrens zfs_dozonecheck(const char *dataset, cred_t *cr) 147fa9e4066Sahrens { 148fa9e4066Sahrens uint64_t zoned; 149fa9e4066Sahrens int writable = 1; 150fa9e4066Sahrens 151fa9e4066Sahrens /* 152fa9e4066Sahrens * The dataset must be visible by this zone -- check this first 153fa9e4066Sahrens * so they don't see EPERM on something they shouldn't know about. 154fa9e4066Sahrens */ 155fa9e4066Sahrens if (!INGLOBALZONE(curproc) && 156fa9e4066Sahrens !zone_dataset_visible(dataset, &writable)) 157fa9e4066Sahrens return (ENOENT); 158fa9e4066Sahrens 159fa9e4066Sahrens if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 160fa9e4066Sahrens return (ENOENT); 161fa9e4066Sahrens 162fa9e4066Sahrens if (INGLOBALZONE(curproc)) { 163fa9e4066Sahrens /* 164fa9e4066Sahrens * If the fs is zoned, only root can access it from the 165fa9e4066Sahrens * global zone. 166fa9e4066Sahrens */ 167fa9e4066Sahrens if (secpolicy_zfs(cr) && zoned) 168fa9e4066Sahrens return (EPERM); 169fa9e4066Sahrens } else { 170fa9e4066Sahrens /* 171fa9e4066Sahrens * If we are in a local zone, the 'zoned' property must be set. 172fa9e4066Sahrens */ 173fa9e4066Sahrens if (!zoned) 174fa9e4066Sahrens return (EPERM); 175fa9e4066Sahrens 176fa9e4066Sahrens /* must be writable by this zone */ 177fa9e4066Sahrens if (!writable) 178fa9e4066Sahrens return (EPERM); 179fa9e4066Sahrens } 180fa9e4066Sahrens return (0); 181fa9e4066Sahrens } 182fa9e4066Sahrens 183fa9e4066Sahrens /* 184fa9e4066Sahrens * Policy for dataset write operations (create children, set properties, etc). 185fa9e4066Sahrens * Requires SYS_MOUNT privilege, and must be writable in the local zone. 186fa9e4066Sahrens */ 187fa9e4066Sahrens /* ARGSUSED */ 188fa9e4066Sahrens int 189fa9e4066Sahrens zfs_secpolicy_write(const char *dataset, const char *unused, cred_t *cr) 190fa9e4066Sahrens { 191fa9e4066Sahrens int error; 192fa9e4066Sahrens 193fa9e4066Sahrens if (error = zfs_dozonecheck(dataset, cr)) 194fa9e4066Sahrens return (error); 195fa9e4066Sahrens 196fa9e4066Sahrens return (secpolicy_zfs(cr)); 197fa9e4066Sahrens } 198fa9e4066Sahrens 199fa9e4066Sahrens /* 200fa9e4066Sahrens * Policy for operations that want to write a dataset's parent: 201fa9e4066Sahrens * create, destroy, snapshot, clone, restore. 202fa9e4066Sahrens */ 203fa9e4066Sahrens static int 204fa9e4066Sahrens zfs_secpolicy_parent(const char *dataset, const char *unused, cred_t *cr) 205fa9e4066Sahrens { 206fa9e4066Sahrens char parentname[MAXNAMELEN]; 207fa9e4066Sahrens char *cp; 208fa9e4066Sahrens 209fa9e4066Sahrens /* 210fa9e4066Sahrens * Remove the @bla or /bla from the end of the name to get the parent. 211fa9e4066Sahrens */ 212fa9e4066Sahrens (void) strncpy(parentname, dataset, sizeof (parentname)); 213fa9e4066Sahrens cp = strrchr(parentname, '@'); 214fa9e4066Sahrens if (cp != NULL) { 215fa9e4066Sahrens cp[0] = '\0'; 216fa9e4066Sahrens } else { 217fa9e4066Sahrens cp = strrchr(parentname, '/'); 218fa9e4066Sahrens if (cp == NULL) 219fa9e4066Sahrens return (ENOENT); 220fa9e4066Sahrens cp[0] = '\0'; 221fa9e4066Sahrens 222fa9e4066Sahrens } 223fa9e4066Sahrens 224fa9e4066Sahrens return (zfs_secpolicy_write(parentname, unused, cr)); 225fa9e4066Sahrens } 226fa9e4066Sahrens 227fa9e4066Sahrens /* 228fa9e4066Sahrens * Policy for dataset write operations (create children, set properties, etc). 229fa9e4066Sahrens * Requires SYS_MOUNT privilege, and must be writable in the local zone. 230fa9e4066Sahrens */ 231fa9e4066Sahrens static int 232fa9e4066Sahrens zfs_secpolicy_setprop(const char *dataset, const char *prop, cred_t *cr) 233fa9e4066Sahrens { 234fa9e4066Sahrens int error; 235fa9e4066Sahrens 236fa9e4066Sahrens if (error = zfs_dozonecheck(dataset, cr)) 237fa9e4066Sahrens return (error); 238fa9e4066Sahrens 239fa9e4066Sahrens if (strcmp(prop, "zoned") == 0) { 240fa9e4066Sahrens /* 241fa9e4066Sahrens * Disallow setting of 'zoned' from within a local zone. 242fa9e4066Sahrens */ 243fa9e4066Sahrens if (!INGLOBALZONE(curproc)) 244fa9e4066Sahrens return (EPERM); 245fa9e4066Sahrens } 246fa9e4066Sahrens 247fa9e4066Sahrens return (secpolicy_zfs(cr)); 248fa9e4066Sahrens } 249fa9e4066Sahrens 250fa9e4066Sahrens /* 251fa9e4066Sahrens * Security policy for setting the quota. This is the same as 252fa9e4066Sahrens * zfs_secpolicy_write, except that the local zone may not change the quota at 253fa9e4066Sahrens * the zone-property setpoint. 254fa9e4066Sahrens */ 255fa9e4066Sahrens /* ARGSUSED */ 256fa9e4066Sahrens static int 257fa9e4066Sahrens zfs_secpolicy_quota(const char *dataset, const char *unused, cred_t *cr) 258fa9e4066Sahrens { 259fa9e4066Sahrens int error; 260fa9e4066Sahrens 261fa9e4066Sahrens if (error = zfs_dozonecheck(dataset, cr)) 262fa9e4066Sahrens return (error); 263fa9e4066Sahrens 264fa9e4066Sahrens if (!INGLOBALZONE(curproc)) { 265fa9e4066Sahrens uint64_t zoned; 266fa9e4066Sahrens char setpoint[MAXNAMELEN]; 267fa9e4066Sahrens int dslen; 268fa9e4066Sahrens /* 269fa9e4066Sahrens * Unprivileged users are allowed to modify the quota 270fa9e4066Sahrens * on things *under* (ie. contained by) the thing they 271fa9e4066Sahrens * own. 272fa9e4066Sahrens */ 273fa9e4066Sahrens if (dsl_prop_get_integer(dataset, "zoned", &zoned, setpoint)) 274fa9e4066Sahrens return (EPERM); 275fa9e4066Sahrens if (!zoned) /* this shouldn't happen */ 276fa9e4066Sahrens return (EPERM); 277fa9e4066Sahrens dslen = strlen(dataset); 278fa9e4066Sahrens if (dslen <= strlen(setpoint)) 279fa9e4066Sahrens return (EPERM); 280fa9e4066Sahrens } 281fa9e4066Sahrens 282fa9e4066Sahrens return (secpolicy_zfs(cr)); 283fa9e4066Sahrens } 284fa9e4066Sahrens 285fa9e4066Sahrens /* 286fa9e4066Sahrens * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 287fa9e4066Sahrens * SYS_CONFIG privilege, which is not available in a local zone. 288fa9e4066Sahrens */ 289fa9e4066Sahrens /* ARGSUSED */ 290fa9e4066Sahrens static int 291fa9e4066Sahrens zfs_secpolicy_config(const char *unused, const char *unused2, cred_t *cr) 292fa9e4066Sahrens { 293fa9e4066Sahrens if (secpolicy_sys_config(cr, B_FALSE) != 0) 294fa9e4066Sahrens return (EPERM); 295fa9e4066Sahrens 296fa9e4066Sahrens return (0); 297fa9e4066Sahrens } 298fa9e4066Sahrens 299fa9e4066Sahrens /* 300fa9e4066Sahrens * Returns the nvlist as specified by the user in the zfs_cmd_t. 301fa9e4066Sahrens */ 302fa9e4066Sahrens static int 303fa9e4066Sahrens get_config(zfs_cmd_t *zc, nvlist_t **nvp) 304fa9e4066Sahrens { 305fa9e4066Sahrens char *packed; 306fa9e4066Sahrens size_t size; 307fa9e4066Sahrens int error; 308fa9e4066Sahrens nvlist_t *config = NULL; 309fa9e4066Sahrens 310fa9e4066Sahrens /* 311fa9e4066Sahrens * Read in and unpack the user-supplied nvlist. By this point, we know 312fa9e4066Sahrens * that the user has the SYS_CONFIG privilege, so allocating arbitrary 313fa9e4066Sahrens * sized regions of memory should not be a problem. 314fa9e4066Sahrens */ 315fa9e4066Sahrens if ((size = zc->zc_config_src_size) == 0) 316fa9e4066Sahrens return (EINVAL); 317fa9e4066Sahrens 318fa9e4066Sahrens packed = kmem_alloc(size, KM_SLEEP); 319fa9e4066Sahrens 320fa9e4066Sahrens if ((error = xcopyin((void *)(uintptr_t)zc->zc_config_src, packed, 321fa9e4066Sahrens size)) != 0) { 322fa9e4066Sahrens kmem_free(packed, size); 323fa9e4066Sahrens return (error); 324fa9e4066Sahrens } 325fa9e4066Sahrens 326fa9e4066Sahrens if ((error = nvlist_unpack(packed, size, &config, 0)) != 0) { 327fa9e4066Sahrens kmem_free(packed, size); 328fa9e4066Sahrens return (error); 329fa9e4066Sahrens } 330fa9e4066Sahrens 331fa9e4066Sahrens kmem_free(packed, size); 332fa9e4066Sahrens 333fa9e4066Sahrens *nvp = config; 334fa9e4066Sahrens return (0); 335fa9e4066Sahrens } 336fa9e4066Sahrens 337fa9e4066Sahrens static int 338fa9e4066Sahrens zfs_ioc_pool_create(zfs_cmd_t *zc) 339fa9e4066Sahrens { 340fa9e4066Sahrens int error; 341fa9e4066Sahrens nvlist_t *config; 342fa9e4066Sahrens 343fa9e4066Sahrens if ((error = get_config(zc, &config)) != 0) 344fa9e4066Sahrens return (error); 345fa9e4066Sahrens 346fa9e4066Sahrens error = spa_create(zc->zc_name, config, zc->zc_root[0] == '\0' ? 347fa9e4066Sahrens NULL : zc->zc_root); 348fa9e4066Sahrens 349fa9e4066Sahrens nvlist_free(config); 350fa9e4066Sahrens 351fa9e4066Sahrens return (error); 352fa9e4066Sahrens } 353fa9e4066Sahrens 354fa9e4066Sahrens static int 355fa9e4066Sahrens zfs_ioc_pool_destroy(zfs_cmd_t *zc) 356fa9e4066Sahrens { 357fa9e4066Sahrens return (spa_destroy(zc->zc_name)); 358fa9e4066Sahrens } 359fa9e4066Sahrens 360fa9e4066Sahrens static int 361fa9e4066Sahrens zfs_ioc_pool_import(zfs_cmd_t *zc) 362fa9e4066Sahrens { 363fa9e4066Sahrens int error; 364fa9e4066Sahrens nvlist_t *config; 365fa9e4066Sahrens uint64_t guid; 366fa9e4066Sahrens 367fa9e4066Sahrens if ((error = get_config(zc, &config)) != 0) 368fa9e4066Sahrens return (error); 369fa9e4066Sahrens 370fa9e4066Sahrens if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 371fa9e4066Sahrens guid != zc->zc_pool_guid) 372fa9e4066Sahrens error = EINVAL; 373fa9e4066Sahrens else 374fa9e4066Sahrens error = spa_import(zc->zc_name, config, 375fa9e4066Sahrens zc->zc_root[0] == '\0' ? NULL : zc->zc_root); 376fa9e4066Sahrens 377fa9e4066Sahrens nvlist_free(config); 378fa9e4066Sahrens 379fa9e4066Sahrens return (error); 380fa9e4066Sahrens } 381fa9e4066Sahrens 382fa9e4066Sahrens static int 383fa9e4066Sahrens zfs_ioc_pool_export(zfs_cmd_t *zc) 384fa9e4066Sahrens { 385fa9e4066Sahrens return (spa_export(zc->zc_name)); 386fa9e4066Sahrens } 387fa9e4066Sahrens 388fa9e4066Sahrens static int 389fa9e4066Sahrens zfs_ioc_pool_configs(zfs_cmd_t *zc) 390fa9e4066Sahrens { 391fa9e4066Sahrens nvlist_t *configs; 392fa9e4066Sahrens char *packed = NULL; 393fa9e4066Sahrens size_t size = 0; 394fa9e4066Sahrens int error; 395fa9e4066Sahrens 396fa9e4066Sahrens if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 397fa9e4066Sahrens return (EEXIST); 398fa9e4066Sahrens 399fa9e4066Sahrens VERIFY(nvlist_pack(configs, &packed, &size, NV_ENCODE_NATIVE, 0) == 0); 400fa9e4066Sahrens 401fa9e4066Sahrens if (size > zc->zc_config_dst_size) 402fa9e4066Sahrens error = ENOMEM; 403fa9e4066Sahrens else 404fa9e4066Sahrens error = xcopyout(packed, (void *)(uintptr_t)zc->zc_config_dst, 405fa9e4066Sahrens size); 406fa9e4066Sahrens 407fa9e4066Sahrens zc->zc_config_dst_size = size; 408fa9e4066Sahrens 409fa9e4066Sahrens kmem_free(packed, size); 410fa9e4066Sahrens nvlist_free(configs); 411fa9e4066Sahrens 412fa9e4066Sahrens return (error); 413fa9e4066Sahrens } 414fa9e4066Sahrens 415fa9e4066Sahrens static int 416fa9e4066Sahrens zfs_ioc_pool_guid(zfs_cmd_t *zc) 417fa9e4066Sahrens { 418fa9e4066Sahrens spa_t *spa; 419fa9e4066Sahrens int error; 420fa9e4066Sahrens 421fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 422fa9e4066Sahrens if (error == 0) { 423fa9e4066Sahrens zc->zc_pool_guid = spa_guid(spa); 424fa9e4066Sahrens spa_close(spa, FTAG); 425fa9e4066Sahrens } 426fa9e4066Sahrens return (error); 427fa9e4066Sahrens } 428fa9e4066Sahrens 429fa9e4066Sahrens static int 430fa9e4066Sahrens zfs_ioc_pool_stats(zfs_cmd_t *zc) 431fa9e4066Sahrens { 432fa9e4066Sahrens nvlist_t *config; 433fa9e4066Sahrens char *packed = NULL; 434fa9e4066Sahrens size_t size = 0; 435fa9e4066Sahrens int error; 436fa9e4066Sahrens 437fa9e4066Sahrens error = spa_get_stats(zc->zc_name, &config); 438fa9e4066Sahrens 439fa9e4066Sahrens if (config != NULL) { 440fa9e4066Sahrens VERIFY(nvlist_pack(config, &packed, &size, 441fa9e4066Sahrens NV_ENCODE_NATIVE, 0) == 0); 442fa9e4066Sahrens 443fa9e4066Sahrens if (size > zc->zc_config_dst_size) 444fa9e4066Sahrens error = ENOMEM; 445fa9e4066Sahrens else if (xcopyout(packed, (void *)(uintptr_t)zc->zc_config_dst, 446fa9e4066Sahrens size)) 447fa9e4066Sahrens error = EFAULT; 448fa9e4066Sahrens 449fa9e4066Sahrens zc->zc_config_dst_size = size; 450fa9e4066Sahrens 451fa9e4066Sahrens kmem_free(packed, size); 452fa9e4066Sahrens nvlist_free(config); 453fa9e4066Sahrens } else { 454fa9e4066Sahrens ASSERT(error != 0); 455fa9e4066Sahrens } 456fa9e4066Sahrens 457fa9e4066Sahrens return (error); 458fa9e4066Sahrens } 459fa9e4066Sahrens 460fa9e4066Sahrens /* 461fa9e4066Sahrens * Try to import the given pool, returning pool stats as appropriate so that 462fa9e4066Sahrens * user land knows which devices are available and overall pool health. 463fa9e4066Sahrens */ 464fa9e4066Sahrens static int 465fa9e4066Sahrens zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 466fa9e4066Sahrens { 467fa9e4066Sahrens nvlist_t *tryconfig, *config; 468fa9e4066Sahrens char *packed = NULL; 469fa9e4066Sahrens size_t size = 0; 470fa9e4066Sahrens int error; 471fa9e4066Sahrens 472fa9e4066Sahrens if ((error = get_config(zc, &tryconfig)) != 0) 473fa9e4066Sahrens return (error); 474fa9e4066Sahrens 475fa9e4066Sahrens config = spa_tryimport(tryconfig); 476fa9e4066Sahrens 477fa9e4066Sahrens nvlist_free(tryconfig); 478fa9e4066Sahrens 479fa9e4066Sahrens if (config == NULL) 480fa9e4066Sahrens return (EINVAL); 481fa9e4066Sahrens 482fa9e4066Sahrens VERIFY(nvlist_pack(config, &packed, &size, NV_ENCODE_NATIVE, 0) == 0); 483fa9e4066Sahrens 484fa9e4066Sahrens if (size > zc->zc_config_dst_size) 485fa9e4066Sahrens error = ENOMEM; 486fa9e4066Sahrens else 487fa9e4066Sahrens error = xcopyout(packed, (void *)(uintptr_t)zc->zc_config_dst, 488fa9e4066Sahrens size); 489fa9e4066Sahrens 490fa9e4066Sahrens zc->zc_config_dst_size = size; 491fa9e4066Sahrens 492fa9e4066Sahrens kmem_free(packed, size); 493fa9e4066Sahrens nvlist_free(config); 494fa9e4066Sahrens 495fa9e4066Sahrens return (error); 496fa9e4066Sahrens } 497fa9e4066Sahrens 498fa9e4066Sahrens static int 499fa9e4066Sahrens zfs_ioc_pool_scrub(zfs_cmd_t *zc) 500fa9e4066Sahrens { 501fa9e4066Sahrens spa_t *spa; 502fa9e4066Sahrens int error; 503fa9e4066Sahrens 504fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 505fa9e4066Sahrens if (error == 0) { 506fa9e4066Sahrens error = spa_scrub(spa, zc->zc_cookie, B_FALSE); 507fa9e4066Sahrens spa_close(spa, FTAG); 508fa9e4066Sahrens } 509fa9e4066Sahrens return (error); 510fa9e4066Sahrens } 511fa9e4066Sahrens 512fa9e4066Sahrens static int 513fa9e4066Sahrens zfs_ioc_pool_freeze(zfs_cmd_t *zc) 514fa9e4066Sahrens { 515fa9e4066Sahrens spa_t *spa; 516fa9e4066Sahrens int error; 517fa9e4066Sahrens 518fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 519fa9e4066Sahrens if (error == 0) { 520fa9e4066Sahrens spa_freeze(spa); 521fa9e4066Sahrens spa_close(spa, FTAG); 522fa9e4066Sahrens } 523fa9e4066Sahrens return (error); 524fa9e4066Sahrens } 525fa9e4066Sahrens 526fa9e4066Sahrens static int 527fa9e4066Sahrens zfs_ioc_vdev_add(zfs_cmd_t *zc) 528fa9e4066Sahrens { 529fa9e4066Sahrens spa_t *spa; 530fa9e4066Sahrens int error; 531fa9e4066Sahrens nvlist_t *config; 532fa9e4066Sahrens 533fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 534fa9e4066Sahrens if (error != 0) 535fa9e4066Sahrens return (error); 536fa9e4066Sahrens 537fa9e4066Sahrens if ((error = get_config(zc, &config)) == 0) { 538fa9e4066Sahrens error = spa_vdev_add(spa, config); 539fa9e4066Sahrens nvlist_free(config); 540fa9e4066Sahrens } 541fa9e4066Sahrens 542fa9e4066Sahrens spa_close(spa, FTAG); 543fa9e4066Sahrens return (error); 544fa9e4066Sahrens } 545fa9e4066Sahrens 546fa9e4066Sahrens /* ARGSUSED */ 547fa9e4066Sahrens static int 548fa9e4066Sahrens zfs_ioc_vdev_remove(zfs_cmd_t *zc) 549fa9e4066Sahrens { 550fa9e4066Sahrens return (ENOTSUP); 551fa9e4066Sahrens } 552fa9e4066Sahrens 553fa9e4066Sahrens static int 554fa9e4066Sahrens zfs_ioc_vdev_online(zfs_cmd_t *zc) 555fa9e4066Sahrens { 556fa9e4066Sahrens spa_t *spa; 557fa9e4066Sahrens char *path = zc->zc_prop_value; 558fa9e4066Sahrens int error; 559fa9e4066Sahrens 560fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 561fa9e4066Sahrens if (error != 0) 562fa9e4066Sahrens return (error); 563fa9e4066Sahrens error = vdev_online(spa, path); 564fa9e4066Sahrens spa_close(spa, FTAG); 565fa9e4066Sahrens return (error); 566fa9e4066Sahrens } 567fa9e4066Sahrens 568fa9e4066Sahrens static int 569fa9e4066Sahrens zfs_ioc_vdev_offline(zfs_cmd_t *zc) 570fa9e4066Sahrens { 571fa9e4066Sahrens spa_t *spa; 572fa9e4066Sahrens char *path = zc->zc_prop_value; 573*441d80aaSlling int istmp = zc->zc_cookie; 574fa9e4066Sahrens int error; 575fa9e4066Sahrens 576fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 577fa9e4066Sahrens if (error != 0) 578fa9e4066Sahrens return (error); 579*441d80aaSlling error = vdev_offline(spa, path, istmp); 580fa9e4066Sahrens spa_close(spa, FTAG); 581fa9e4066Sahrens return (error); 582fa9e4066Sahrens } 583fa9e4066Sahrens 584fa9e4066Sahrens static int 585fa9e4066Sahrens zfs_ioc_vdev_attach(zfs_cmd_t *zc) 586fa9e4066Sahrens { 587fa9e4066Sahrens spa_t *spa; 588fa9e4066Sahrens char *path = zc->zc_prop_value; 589fa9e4066Sahrens int replacing = zc->zc_cookie; 590fa9e4066Sahrens nvlist_t *config; 591fa9e4066Sahrens int error; 592fa9e4066Sahrens 593fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 594fa9e4066Sahrens if (error != 0) 595fa9e4066Sahrens return (error); 596fa9e4066Sahrens 597fa9e4066Sahrens if ((error = get_config(zc, &config)) == 0) { 598fa9e4066Sahrens error = spa_vdev_attach(spa, path, config, replacing); 599fa9e4066Sahrens nvlist_free(config); 600fa9e4066Sahrens } 601fa9e4066Sahrens 602fa9e4066Sahrens spa_close(spa, FTAG); 603fa9e4066Sahrens return (error); 604fa9e4066Sahrens } 605fa9e4066Sahrens 606fa9e4066Sahrens static int 607fa9e4066Sahrens zfs_ioc_vdev_detach(zfs_cmd_t *zc) 608fa9e4066Sahrens { 609fa9e4066Sahrens spa_t *spa; 610fa9e4066Sahrens char *path = zc->zc_prop_value; 611fa9e4066Sahrens int error; 612fa9e4066Sahrens 613fa9e4066Sahrens error = spa_open(zc->zc_name, &spa, FTAG); 614fa9e4066Sahrens if (error != 0) 615fa9e4066Sahrens return (error); 616fa9e4066Sahrens 617fa9e4066Sahrens error = spa_vdev_detach(spa, path, 0, B_FALSE); 618fa9e4066Sahrens 619fa9e4066Sahrens spa_close(spa, FTAG); 620fa9e4066Sahrens return (error); 621fa9e4066Sahrens } 622fa9e4066Sahrens 623c67d9675Seschrock static int 624c67d9675Seschrock zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 625c67d9675Seschrock { 626c67d9675Seschrock spa_t *spa; 627c67d9675Seschrock char *path = zc->zc_prop_value; 628c67d9675Seschrock uint64_t guid = zc->zc_pool_guid; 629c67d9675Seschrock int error; 630c67d9675Seschrock 631c67d9675Seschrock error = spa_open(zc->zc_name, &spa, FTAG); 632c67d9675Seschrock if (error != 0) 633c67d9675Seschrock return (error); 634c67d9675Seschrock 635c67d9675Seschrock error = spa_vdev_setpath(spa, guid, path); 636c67d9675Seschrock 637c67d9675Seschrock spa_close(spa, FTAG); 638c67d9675Seschrock return (error); 639c67d9675Seschrock } 640c67d9675Seschrock 641c67d9675Seschrock 642fa9e4066Sahrens static int 643fa9e4066Sahrens zfs_ioc_objset_stats(zfs_cmd_t *zc) 644fa9e4066Sahrens { 645fa9e4066Sahrens objset_t *os = NULL; 646fa9e4066Sahrens int error; 6477f7322feSeschrock nvlist_t *nv; 6487f7322feSeschrock size_t sz; 6497f7322feSeschrock char *buf; 650fa9e4066Sahrens 651fa9e4066Sahrens retry: 652fa9e4066Sahrens error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 653fa9e4066Sahrens DS_MODE_STANDARD | DS_MODE_READONLY, &os); 654fa9e4066Sahrens if (error != 0) { 655fa9e4066Sahrens /* 656fa9e4066Sahrens * This is ugly: dmu_objset_open() can return EBUSY if 657fa9e4066Sahrens * the objset is held exclusively. Fortunately this hold is 658fa9e4066Sahrens * only for a short while, so we retry here. 659fa9e4066Sahrens * This avoids user code having to handle EBUSY, 660fa9e4066Sahrens * for example for a "zfs list". 661fa9e4066Sahrens */ 662fa9e4066Sahrens if (error == EBUSY) { 663fa9e4066Sahrens delay(1); 664fa9e4066Sahrens goto retry; 665fa9e4066Sahrens } 666fa9e4066Sahrens return (error); 667fa9e4066Sahrens } 668fa9e4066Sahrens 669fa9e4066Sahrens dmu_objset_stats(os, &zc->zc_objset_stats); 670fa9e4066Sahrens 6717f7322feSeschrock if (zc->zc_config_src != NULL && 6727f7322feSeschrock (error = dsl_prop_get_all(os, &nv)) == 0) { 6737f7322feSeschrock VERIFY(nvlist_size(nv, &sz, NV_ENCODE_NATIVE) == 0); 6747f7322feSeschrock if (sz > zc->zc_config_src_size) { 6757f7322feSeschrock zc->zc_config_src_size = sz; 6767f7322feSeschrock error = ENOMEM; 6777f7322feSeschrock } else { 6787f7322feSeschrock buf = kmem_alloc(sz, KM_SLEEP); 6797f7322feSeschrock VERIFY(nvlist_pack(nv, &buf, &sz, 6807f7322feSeschrock NV_ENCODE_NATIVE, 0) == 0); 6817f7322feSeschrock error = xcopyout(buf, 6827f7322feSeschrock (void *)(uintptr_t)zc->zc_config_src, sz); 6837f7322feSeschrock kmem_free(buf, sz); 6847f7322feSeschrock } 6857f7322feSeschrock nvlist_free(nv); 6867f7322feSeschrock } 687fa9e4066Sahrens 6887f7322feSeschrock if (!error && zc->zc_objset_stats.dds_type == DMU_OST_ZVOL) 689fa9e4066Sahrens error = zvol_get_stats(zc, os); 690fa9e4066Sahrens 691fa9e4066Sahrens dmu_objset_close(os); 692fa9e4066Sahrens return (error); 693fa9e4066Sahrens } 694fa9e4066Sahrens 695fa9e4066Sahrens static int 696fa9e4066Sahrens zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 697fa9e4066Sahrens { 69887e5029aSahrens objset_t *os; 699fa9e4066Sahrens int error; 700fa9e4066Sahrens char *p; 701fa9e4066Sahrens 70287e5029aSahrens retry: 70387e5029aSahrens error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 70487e5029aSahrens DS_MODE_STANDARD | DS_MODE_READONLY, &os); 70587e5029aSahrens if (error != 0) { 70687e5029aSahrens /* 70787e5029aSahrens * This is ugly: dmu_objset_open() can return EBUSY if 70887e5029aSahrens * the objset is held exclusively. Fortunately this hold is 70987e5029aSahrens * only for a short while, so we retry here. 71087e5029aSahrens * This avoids user code having to handle EBUSY, 71187e5029aSahrens * for example for a "zfs list". 71287e5029aSahrens */ 71387e5029aSahrens if (error == EBUSY) { 71487e5029aSahrens delay(1); 71587e5029aSahrens goto retry; 71687e5029aSahrens } 71787e5029aSahrens if (error == ENOENT) 71887e5029aSahrens error = ESRCH; 71987e5029aSahrens return (error); 720fa9e4066Sahrens } 721fa9e4066Sahrens 722fa9e4066Sahrens p = strrchr(zc->zc_name, '/'); 723fa9e4066Sahrens if (p == NULL || p[1] != '\0') 724fa9e4066Sahrens (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 725fa9e4066Sahrens p = zc->zc_name + strlen(zc->zc_name); 726fa9e4066Sahrens 727fa9e4066Sahrens do { 72887e5029aSahrens error = dmu_dir_list_next(os, 72987e5029aSahrens sizeof (zc->zc_name) - (p - zc->zc_name), p, 73087e5029aSahrens NULL, &zc->zc_cookie); 731fa9e4066Sahrens if (error == ENOENT) 732fa9e4066Sahrens error = ESRCH; 73387e5029aSahrens } while (error == 0 && !INGLOBALZONE(curproc) && 734fa9e4066Sahrens !zone_dataset_visible(zc->zc_name, NULL)); 735fa9e4066Sahrens 736fa9e4066Sahrens /* 73787e5029aSahrens * If it's a hidden dataset (ie. with a '$' in its name), don't 73887e5029aSahrens * try to get stats for it. Userland will skip over it. 739fa9e4066Sahrens */ 74087e5029aSahrens if (error == 0 && strchr(zc->zc_name, '$') == NULL) 74187e5029aSahrens error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 742fa9e4066Sahrens 74387e5029aSahrens dmu_objset_close(os); 744fa9e4066Sahrens return (error); 745fa9e4066Sahrens } 746fa9e4066Sahrens 747fa9e4066Sahrens static int 748fa9e4066Sahrens zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 749fa9e4066Sahrens { 75087e5029aSahrens objset_t *os; 751fa9e4066Sahrens int error; 752fa9e4066Sahrens 753fa9e4066Sahrens retry: 75487e5029aSahrens error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 75587e5029aSahrens DS_MODE_STANDARD | DS_MODE_READONLY, &os); 75687e5029aSahrens if (error != 0) { 757fa9e4066Sahrens /* 75887e5029aSahrens * This is ugly: dmu_objset_open() can return EBUSY if 759fa9e4066Sahrens * the objset is held exclusively. Fortunately this hold is 760fa9e4066Sahrens * only for a short while, so we retry here. 761fa9e4066Sahrens * This avoids user code having to handle EBUSY, 76287e5029aSahrens * for example for a "zfs list". 763fa9e4066Sahrens */ 764fa9e4066Sahrens if (error == EBUSY) { 765fa9e4066Sahrens delay(1); 766fa9e4066Sahrens goto retry; 767fa9e4066Sahrens } 768fa9e4066Sahrens if (error == ENOENT) 76987e5029aSahrens error = ESRCH; 770fa9e4066Sahrens return (error); 771fa9e4066Sahrens } 772fa9e4066Sahrens 773b81d61a6Slling /* 774b81d61a6Slling * A dataset name of maximum length cannot have any snapshots, 775b81d61a6Slling * so exit immediately. 776b81d61a6Slling */ 777b81d61a6Slling if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 77887e5029aSahrens dmu_objset_close(os); 779b81d61a6Slling return (ESRCH); 780fa9e4066Sahrens } 781fa9e4066Sahrens 78287e5029aSahrens error = dmu_snapshot_list_next(os, 78387e5029aSahrens sizeof (zc->zc_name) - strlen(zc->zc_name), 78487e5029aSahrens zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie); 78587e5029aSahrens if (error == ENOENT) 78687e5029aSahrens error = ESRCH; 787fa9e4066Sahrens 78887e5029aSahrens if (error == 0) 78987e5029aSahrens error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 790fa9e4066Sahrens 79187e5029aSahrens dmu_objset_close(os); 792fa9e4066Sahrens return (error); 793fa9e4066Sahrens } 794fa9e4066Sahrens 795fa9e4066Sahrens static int 796fa9e4066Sahrens zfs_ioc_set_prop(zfs_cmd_t *zc) 797fa9e4066Sahrens { 798fa9e4066Sahrens return (dsl_prop_set(zc->zc_name, zc->zc_prop_name, 799fa9e4066Sahrens zc->zc_intsz, zc->zc_numints, zc->zc_prop_value)); 800fa9e4066Sahrens } 801fa9e4066Sahrens 802fa9e4066Sahrens static int 803fa9e4066Sahrens zfs_ioc_set_quota(zfs_cmd_t *zc) 804fa9e4066Sahrens { 805fa9e4066Sahrens return (dsl_dir_set_quota(zc->zc_name, zc->zc_cookie)); 806fa9e4066Sahrens } 807fa9e4066Sahrens 808fa9e4066Sahrens static int 809fa9e4066Sahrens zfs_ioc_set_reservation(zfs_cmd_t *zc) 810fa9e4066Sahrens { 811fa9e4066Sahrens return (dsl_dir_set_reservation(zc->zc_name, zc->zc_cookie)); 812fa9e4066Sahrens } 813fa9e4066Sahrens 814fa9e4066Sahrens static int 815fa9e4066Sahrens zfs_ioc_set_volsize(zfs_cmd_t *zc) 816fa9e4066Sahrens { 817fa9e4066Sahrens return (zvol_set_volsize(zc)); 818fa9e4066Sahrens } 819fa9e4066Sahrens 820fa9e4066Sahrens static int 821fa9e4066Sahrens zfs_ioc_set_volblocksize(zfs_cmd_t *zc) 822fa9e4066Sahrens { 823fa9e4066Sahrens return (zvol_set_volblocksize(zc)); 824fa9e4066Sahrens } 825fa9e4066Sahrens 826fa9e4066Sahrens static int 827fa9e4066Sahrens zfs_ioc_create_minor(zfs_cmd_t *zc) 828fa9e4066Sahrens { 829fa9e4066Sahrens return (zvol_create_minor(zc)); 830fa9e4066Sahrens } 831fa9e4066Sahrens 832fa9e4066Sahrens static int 833fa9e4066Sahrens zfs_ioc_remove_minor(zfs_cmd_t *zc) 834fa9e4066Sahrens { 835fa9e4066Sahrens return (zvol_remove_minor(zc)); 836fa9e4066Sahrens } 837fa9e4066Sahrens 838fa9e4066Sahrens /* 839fa9e4066Sahrens * Search the vfs list for a specified resource. Returns a pointer to it 840fa9e4066Sahrens * or NULL if no suitable entry is found. The caller of this routine 841fa9e4066Sahrens * is responsible for releasing the returned vfs pointer. 842fa9e4066Sahrens */ 843fa9e4066Sahrens static vfs_t * 844fa9e4066Sahrens zfs_get_vfs(const char *resource) 845fa9e4066Sahrens { 846fa9e4066Sahrens struct vfs *vfsp; 847fa9e4066Sahrens struct vfs *vfs_found = NULL; 848fa9e4066Sahrens 849fa9e4066Sahrens vfs_list_read_lock(); 850fa9e4066Sahrens vfsp = rootvfs; 851fa9e4066Sahrens do { 852fa9e4066Sahrens if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 853fa9e4066Sahrens VFS_HOLD(vfsp); 854fa9e4066Sahrens vfs_found = vfsp; 855fa9e4066Sahrens break; 856fa9e4066Sahrens } 857fa9e4066Sahrens vfsp = vfsp->vfs_next; 858fa9e4066Sahrens } while (vfsp != rootvfs); 859fa9e4066Sahrens vfs_list_unlock(); 860fa9e4066Sahrens return (vfs_found); 861fa9e4066Sahrens } 862fa9e4066Sahrens 863fa9e4066Sahrens static void 864fa9e4066Sahrens zfs_create_cb(objset_t *os, void *arg, dmu_tx_t *tx) 865fa9e4066Sahrens { 866fa9e4066Sahrens zfs_cmd_t *zc = arg; 867fa9e4066Sahrens zfs_create_fs(os, (cred_t *)(uintptr_t)zc->zc_cred, tx); 868fa9e4066Sahrens } 869fa9e4066Sahrens 870fa9e4066Sahrens static int 871fa9e4066Sahrens zfs_ioc_create(zfs_cmd_t *zc) 872fa9e4066Sahrens { 873fa9e4066Sahrens objset_t *clone; 874fa9e4066Sahrens int error = 0; 875fa9e4066Sahrens void (*cbfunc)(objset_t *os, void *arg, dmu_tx_t *tx); 876fa9e4066Sahrens dmu_objset_type_t type = zc->zc_objset_type; 877fa9e4066Sahrens 878fa9e4066Sahrens switch (type) { 879fa9e4066Sahrens 880fa9e4066Sahrens case DMU_OST_ZFS: 881fa9e4066Sahrens cbfunc = zfs_create_cb; 882fa9e4066Sahrens break; 883fa9e4066Sahrens 884fa9e4066Sahrens case DMU_OST_ZVOL: 885fa9e4066Sahrens cbfunc = zvol_create_cb; 886fa9e4066Sahrens break; 887fa9e4066Sahrens 888fa9e4066Sahrens default: 889fa9e4066Sahrens return (EINVAL); 890fa9e4066Sahrens } 891fa9e4066Sahrens 892fa9e4066Sahrens if (zc->zc_filename[0] != '\0') { 893fa9e4066Sahrens /* 894fa9e4066Sahrens * We're creating a clone of an existing snapshot. 895fa9e4066Sahrens */ 896fa9e4066Sahrens zc->zc_filename[sizeof (zc->zc_filename) - 1] = '\0'; 897fa9e4066Sahrens if (dataset_namecheck(zc->zc_filename, NULL, NULL) != 0) 898fa9e4066Sahrens return (EINVAL); 899fa9e4066Sahrens 900fa9e4066Sahrens error = dmu_objset_open(zc->zc_filename, type, 901fa9e4066Sahrens DS_MODE_STANDARD | DS_MODE_READONLY, &clone); 902fa9e4066Sahrens if (error) 903fa9e4066Sahrens return (error); 904fa9e4066Sahrens error = dmu_objset_create(zc->zc_name, type, clone, NULL, NULL); 905fa9e4066Sahrens dmu_objset_close(clone); 906fa9e4066Sahrens } else if (strchr(zc->zc_name, '@') != 0) { 907fa9e4066Sahrens /* 908fa9e4066Sahrens * We're taking a snapshot of an existing dataset. 909fa9e4066Sahrens */ 910fa9e4066Sahrens error = dmu_objset_create(zc->zc_name, type, NULL, NULL, NULL); 911fa9e4066Sahrens } else { 912fa9e4066Sahrens /* 913fa9e4066Sahrens * We're creating a new dataset. 914fa9e4066Sahrens */ 915fa9e4066Sahrens if (type == DMU_OST_ZVOL) { 9165c5460e9Seschrock 917fa9e4066Sahrens if ((error = zvol_check_volblocksize(zc)) != 0) 918fa9e4066Sahrens return (error); 9195c5460e9Seschrock 9205c5460e9Seschrock if ((error = zvol_check_volsize(zc, 9215c5460e9Seschrock zc->zc_volblocksize)) != 0) 9225c5460e9Seschrock return (error); 923fa9e4066Sahrens } 924fa9e4066Sahrens error = dmu_objset_create(zc->zc_name, type, NULL, cbfunc, zc); 925fa9e4066Sahrens } 926fa9e4066Sahrens return (error); 927fa9e4066Sahrens } 928fa9e4066Sahrens 929fa9e4066Sahrens static int 930fa9e4066Sahrens zfs_ioc_destroy(zfs_cmd_t *zc) 931fa9e4066Sahrens { 932fa9e4066Sahrens if (strchr(zc->zc_name, '@') != NULL && 933fa9e4066Sahrens zc->zc_objset_type == DMU_OST_ZFS) { 934fa9e4066Sahrens vfs_t *vfsp; 935fa9e4066Sahrens int err; 936fa9e4066Sahrens 937fa9e4066Sahrens /* 938fa9e4066Sahrens * Snapshots under .zfs control must be unmounted 939fa9e4066Sahrens * before they can be destroyed. 940fa9e4066Sahrens */ 941fa9e4066Sahrens if ((vfsp = zfs_get_vfs(zc->zc_name)) != NULL) { 942fa9e4066Sahrens /* 943fa9e4066Sahrens * Always force the unmount for snapshots. 944fa9e4066Sahrens */ 945fa9e4066Sahrens int flag = MS_FORCE; 946fa9e4066Sahrens 947fa9e4066Sahrens if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 948fa9e4066Sahrens VFS_RELE(vfsp); 949fa9e4066Sahrens return (err); 950fa9e4066Sahrens } 951fa9e4066Sahrens VFS_RELE(vfsp); 952fa9e4066Sahrens if ((err = dounmount(vfsp, flag, kcred)) != 0) 953fa9e4066Sahrens return (err); 954fa9e4066Sahrens } 955fa9e4066Sahrens } 956fa9e4066Sahrens 957fa9e4066Sahrens return (dmu_objset_destroy(zc->zc_name)); 958fa9e4066Sahrens } 959fa9e4066Sahrens 960fa9e4066Sahrens static int 961fa9e4066Sahrens zfs_ioc_rollback(zfs_cmd_t *zc) 962fa9e4066Sahrens { 963fa9e4066Sahrens return (dmu_objset_rollback(zc->zc_name)); 964fa9e4066Sahrens } 965fa9e4066Sahrens 966fa9e4066Sahrens static int 967fa9e4066Sahrens zfs_ioc_rename(zfs_cmd_t *zc) 968fa9e4066Sahrens { 969fa9e4066Sahrens zc->zc_prop_value[sizeof (zc->zc_prop_value) - 1] = '\0'; 970fa9e4066Sahrens if (dataset_namecheck(zc->zc_prop_value, NULL, NULL) != 0) 971fa9e4066Sahrens return (EINVAL); 972fa9e4066Sahrens 973fa9e4066Sahrens if (strchr(zc->zc_name, '@') != NULL && 974fa9e4066Sahrens zc->zc_objset_type == DMU_OST_ZFS) { 975fa9e4066Sahrens vfs_t *vfsp; 976fa9e4066Sahrens int err; 977fa9e4066Sahrens 978fa9e4066Sahrens /* 979fa9e4066Sahrens * Snapshots under .zfs control must be unmounted 980fa9e4066Sahrens * before they can be renamed. 981fa9e4066Sahrens */ 982fa9e4066Sahrens if ((vfsp = zfs_get_vfs(zc->zc_name)) != NULL) { 983fa9e4066Sahrens /* 984fa9e4066Sahrens * Always force the unmount for snapshots. 985fa9e4066Sahrens */ 986fa9e4066Sahrens int flag = MS_FORCE; 987fa9e4066Sahrens 988fa9e4066Sahrens if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 989fa9e4066Sahrens VFS_RELE(vfsp); 990fa9e4066Sahrens return (err); 991fa9e4066Sahrens } 992fa9e4066Sahrens VFS_RELE(vfsp); 993fa9e4066Sahrens if ((err = dounmount(vfsp, flag, kcred)) != 0) 994fa9e4066Sahrens return (err); 995fa9e4066Sahrens } 996fa9e4066Sahrens } 997fa9e4066Sahrens 998fa9e4066Sahrens return (dmu_objset_rename(zc->zc_name, zc->zc_prop_value)); 999fa9e4066Sahrens } 1000fa9e4066Sahrens 1001fa9e4066Sahrens static int 1002fa9e4066Sahrens zfs_ioc_recvbackup(zfs_cmd_t *zc) 1003fa9e4066Sahrens { 1004fa9e4066Sahrens file_t *fp; 1005fa9e4066Sahrens int error, fd; 1006fa9e4066Sahrens 1007fa9e4066Sahrens fd = zc->zc_cookie; 1008fa9e4066Sahrens fp = getf(fd); 1009fa9e4066Sahrens if (fp == NULL) 1010fa9e4066Sahrens return (EBADF); 1011fa9e4066Sahrens error = dmu_recvbackup(&zc->zc_begin_record, &zc->zc_cookie, 1012fa9e4066Sahrens fp->f_vnode, fp->f_offset); 1013fa9e4066Sahrens releasef(fd); 1014fa9e4066Sahrens return (error); 1015fa9e4066Sahrens } 1016fa9e4066Sahrens 1017fa9e4066Sahrens static int 1018fa9e4066Sahrens zfs_ioc_sendbackup(zfs_cmd_t *zc) 1019fa9e4066Sahrens { 1020fa9e4066Sahrens objset_t *fromsnap = NULL; 1021fa9e4066Sahrens objset_t *tosnap; 1022fa9e4066Sahrens file_t *fp; 1023fa9e4066Sahrens int error; 1024fa9e4066Sahrens 1025fa9e4066Sahrens error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1026fa9e4066Sahrens DS_MODE_STANDARD | DS_MODE_READONLY, &tosnap); 1027fa9e4066Sahrens if (error) 1028fa9e4066Sahrens return (error); 1029fa9e4066Sahrens 1030fa9e4066Sahrens if (zc->zc_prop_value[0] != '\0') { 1031fa9e4066Sahrens error = dmu_objset_open(zc->zc_prop_value, DMU_OST_ANY, 1032fa9e4066Sahrens DS_MODE_STANDARD | DS_MODE_READONLY, &fromsnap); 1033fa9e4066Sahrens if (error) { 1034fa9e4066Sahrens dmu_objset_close(tosnap); 1035fa9e4066Sahrens return (error); 1036fa9e4066Sahrens } 1037fa9e4066Sahrens } 1038fa9e4066Sahrens 1039fa9e4066Sahrens fp = getf(zc->zc_cookie); 1040fa9e4066Sahrens if (fp == NULL) { 1041fa9e4066Sahrens dmu_objset_close(tosnap); 1042fa9e4066Sahrens if (fromsnap) 1043fa9e4066Sahrens dmu_objset_close(fromsnap); 1044fa9e4066Sahrens return (EBADF); 1045fa9e4066Sahrens } 1046fa9e4066Sahrens 1047fa9e4066Sahrens error = dmu_sendbackup(tosnap, fromsnap, fp->f_vnode); 1048fa9e4066Sahrens 1049fa9e4066Sahrens releasef(zc->zc_cookie); 1050fa9e4066Sahrens if (fromsnap) 1051fa9e4066Sahrens dmu_objset_close(fromsnap); 1052fa9e4066Sahrens dmu_objset_close(tosnap); 1053fa9e4066Sahrens return (error); 1054fa9e4066Sahrens } 1055fa9e4066Sahrens 1056fa9e4066Sahrens static zfs_ioc_vec_t zfs_ioc_vec[] = { 1057fa9e4066Sahrens { zfs_ioc_pool_create, zfs_secpolicy_config, pool_name }, 1058fa9e4066Sahrens { zfs_ioc_pool_destroy, zfs_secpolicy_config, pool_name }, 1059fa9e4066Sahrens { zfs_ioc_pool_import, zfs_secpolicy_config, pool_name }, 1060fa9e4066Sahrens { zfs_ioc_pool_export, zfs_secpolicy_config, pool_name }, 1061fa9e4066Sahrens { zfs_ioc_pool_configs, zfs_secpolicy_none, no_name }, 1062fa9e4066Sahrens { zfs_ioc_pool_guid, zfs_secpolicy_read, pool_name }, 1063fa9e4066Sahrens { zfs_ioc_pool_stats, zfs_secpolicy_read, pool_name }, 1064fa9e4066Sahrens { zfs_ioc_pool_tryimport, zfs_secpolicy_config, no_name }, 1065fa9e4066Sahrens { zfs_ioc_pool_scrub, zfs_secpolicy_config, pool_name }, 1066fa9e4066Sahrens { zfs_ioc_pool_freeze, zfs_secpolicy_config, no_name }, 1067fa9e4066Sahrens { zfs_ioc_vdev_add, zfs_secpolicy_config, pool_name }, 1068fa9e4066Sahrens { zfs_ioc_vdev_remove, zfs_secpolicy_config, pool_name }, 1069fa9e4066Sahrens { zfs_ioc_vdev_online, zfs_secpolicy_config, pool_name }, 1070fa9e4066Sahrens { zfs_ioc_vdev_offline, zfs_secpolicy_config, pool_name }, 1071fa9e4066Sahrens { zfs_ioc_vdev_attach, zfs_secpolicy_config, pool_name }, 1072fa9e4066Sahrens { zfs_ioc_vdev_detach, zfs_secpolicy_config, pool_name }, 1073c67d9675Seschrock { zfs_ioc_vdev_setpath, zfs_secpolicy_config, pool_name }, 1074fa9e4066Sahrens { zfs_ioc_objset_stats, zfs_secpolicy_read, dataset_name }, 1075fa9e4066Sahrens { zfs_ioc_dataset_list_next, zfs_secpolicy_read, dataset_name }, 1076fa9e4066Sahrens { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, dataset_name }, 1077fa9e4066Sahrens { zfs_ioc_set_prop, zfs_secpolicy_setprop, dataset_name }, 1078fa9e4066Sahrens { zfs_ioc_set_quota, zfs_secpolicy_quota, dataset_name }, 1079fa9e4066Sahrens { zfs_ioc_set_reservation, zfs_secpolicy_write, dataset_name }, 1080fa9e4066Sahrens { zfs_ioc_set_volsize, zfs_secpolicy_config, dataset_name }, 1081fa9e4066Sahrens { zfs_ioc_set_volblocksize, zfs_secpolicy_config, dataset_name }, 1082fa9e4066Sahrens { zfs_ioc_create_minor, zfs_secpolicy_config, dataset_name }, 1083fa9e4066Sahrens { zfs_ioc_remove_minor, zfs_secpolicy_config, dataset_name }, 1084fa9e4066Sahrens { zfs_ioc_create, zfs_secpolicy_parent, dataset_name }, 1085fa9e4066Sahrens { zfs_ioc_destroy, zfs_secpolicy_parent, dataset_name }, 1086fa9e4066Sahrens { zfs_ioc_rollback, zfs_secpolicy_write, dataset_name }, 1087fa9e4066Sahrens { zfs_ioc_rename, zfs_secpolicy_write, dataset_name }, 1088fa9e4066Sahrens { zfs_ioc_recvbackup, zfs_secpolicy_write, dataset_name }, 1089fa9e4066Sahrens { zfs_ioc_sendbackup, zfs_secpolicy_write, dataset_name }, 1090fa9e4066Sahrens }; 1091fa9e4066Sahrens 1092fa9e4066Sahrens static int 1093fa9e4066Sahrens zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 1094fa9e4066Sahrens { 1095fa9e4066Sahrens zfs_cmd_t *zc; 1096fa9e4066Sahrens uint_t vec; 1097fa9e4066Sahrens int error; 1098fa9e4066Sahrens 1099fa9e4066Sahrens if (getminor(dev) != 0) 1100fa9e4066Sahrens return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 1101fa9e4066Sahrens 1102fa9e4066Sahrens vec = cmd - ZFS_IOC; 1103fa9e4066Sahrens 1104fa9e4066Sahrens if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 1105fa9e4066Sahrens return (EINVAL); 1106fa9e4066Sahrens 1107fa9e4066Sahrens zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1108fa9e4066Sahrens 1109fa9e4066Sahrens error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 1110fa9e4066Sahrens 1111fa9e4066Sahrens if (error == 0) { 1112fa9e4066Sahrens zc->zc_cred = (uintptr_t)cr; 1113fa9e4066Sahrens zc->zc_dev = dev; 1114fa9e4066Sahrens error = zfs_ioc_vec[vec].zvec_secpolicy(zc->zc_name, 1115fa9e4066Sahrens zc->zc_prop_name, cr); 1116fa9e4066Sahrens } 1117fa9e4066Sahrens 1118fa9e4066Sahrens /* 1119fa9e4066Sahrens * Ensure that all pool/dataset names are valid before we pass down to 1120fa9e4066Sahrens * the lower layers. 1121fa9e4066Sahrens */ 1122fa9e4066Sahrens if (error == 0) { 1123fa9e4066Sahrens zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 1124fa9e4066Sahrens switch (zfs_ioc_vec[vec].zvec_namecheck) { 1125fa9e4066Sahrens case pool_name: 1126fa9e4066Sahrens if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 1127fa9e4066Sahrens error = EINVAL; 1128fa9e4066Sahrens break; 1129fa9e4066Sahrens 1130fa9e4066Sahrens case dataset_name: 1131fa9e4066Sahrens if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 1132fa9e4066Sahrens error = EINVAL; 1133fa9e4066Sahrens break; 1134fa9e4066Sahrens } 1135fa9e4066Sahrens } 1136fa9e4066Sahrens 1137fa9e4066Sahrens if (error == 0) 1138fa9e4066Sahrens error = zfs_ioc_vec[vec].zvec_func(zc); 1139fa9e4066Sahrens 1140fa9e4066Sahrens if (error == 0 || error == ENOMEM) { 1141fa9e4066Sahrens int rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 1142fa9e4066Sahrens if (error == 0) 1143fa9e4066Sahrens error = rc; 1144fa9e4066Sahrens } 1145fa9e4066Sahrens 1146fa9e4066Sahrens kmem_free(zc, sizeof (zfs_cmd_t)); 1147fa9e4066Sahrens return (error); 1148fa9e4066Sahrens } 1149fa9e4066Sahrens 1150fa9e4066Sahrens static int 1151fa9e4066Sahrens zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 1152fa9e4066Sahrens { 1153fa9e4066Sahrens if (cmd != DDI_ATTACH) 1154fa9e4066Sahrens return (DDI_FAILURE); 1155fa9e4066Sahrens 1156fa9e4066Sahrens if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 1157fa9e4066Sahrens DDI_PSEUDO, 0) == DDI_FAILURE) 1158fa9e4066Sahrens return (DDI_FAILURE); 1159fa9e4066Sahrens 1160fa9e4066Sahrens zfs_dip = dip; 1161fa9e4066Sahrens 1162fa9e4066Sahrens ddi_report_dev(dip); 1163fa9e4066Sahrens 1164fa9e4066Sahrens return (DDI_SUCCESS); 1165fa9e4066Sahrens } 1166fa9e4066Sahrens 1167fa9e4066Sahrens static int 1168fa9e4066Sahrens zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 1169fa9e4066Sahrens { 1170fa9e4066Sahrens if (spa_busy() || zfs_busy() || zvol_busy()) 1171fa9e4066Sahrens return (DDI_FAILURE); 1172fa9e4066Sahrens 1173fa9e4066Sahrens if (cmd != DDI_DETACH) 1174fa9e4066Sahrens return (DDI_FAILURE); 1175fa9e4066Sahrens 1176fa9e4066Sahrens zfs_dip = NULL; 1177fa9e4066Sahrens 1178fa9e4066Sahrens ddi_prop_remove_all(dip); 1179fa9e4066Sahrens ddi_remove_minor_node(dip, NULL); 1180fa9e4066Sahrens 1181fa9e4066Sahrens return (DDI_SUCCESS); 1182fa9e4066Sahrens } 1183fa9e4066Sahrens 1184fa9e4066Sahrens /*ARGSUSED*/ 1185fa9e4066Sahrens static int 1186fa9e4066Sahrens zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 1187fa9e4066Sahrens { 1188fa9e4066Sahrens switch (infocmd) { 1189fa9e4066Sahrens case DDI_INFO_DEVT2DEVINFO: 1190fa9e4066Sahrens *result = zfs_dip; 1191fa9e4066Sahrens return (DDI_SUCCESS); 1192fa9e4066Sahrens 1193fa9e4066Sahrens case DDI_INFO_DEVT2INSTANCE: 1194a0965f35Sbonwick *result = (void *)0; 1195fa9e4066Sahrens return (DDI_SUCCESS); 1196fa9e4066Sahrens } 1197fa9e4066Sahrens 1198fa9e4066Sahrens return (DDI_FAILURE); 1199fa9e4066Sahrens } 1200fa9e4066Sahrens 1201fa9e4066Sahrens /* 1202fa9e4066Sahrens * OK, so this is a little weird. 1203fa9e4066Sahrens * 1204fa9e4066Sahrens * /dev/zfs is the control node, i.e. minor 0. 1205fa9e4066Sahrens * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 1206fa9e4066Sahrens * 1207fa9e4066Sahrens * /dev/zfs has basically nothing to do except serve up ioctls, 1208fa9e4066Sahrens * so most of the standard driver entry points are in zvol.c. 1209fa9e4066Sahrens */ 1210fa9e4066Sahrens static struct cb_ops zfs_cb_ops = { 1211fa9e4066Sahrens zvol_open, /* open */ 1212fa9e4066Sahrens zvol_close, /* close */ 1213fa9e4066Sahrens zvol_strategy, /* strategy */ 1214fa9e4066Sahrens nodev, /* print */ 1215fa9e4066Sahrens nodev, /* dump */ 1216fa9e4066Sahrens zvol_read, /* read */ 1217fa9e4066Sahrens zvol_write, /* write */ 1218fa9e4066Sahrens zfsdev_ioctl, /* ioctl */ 1219fa9e4066Sahrens nodev, /* devmap */ 1220fa9e4066Sahrens nodev, /* mmap */ 1221fa9e4066Sahrens nodev, /* segmap */ 1222fa9e4066Sahrens nochpoll, /* poll */ 1223fa9e4066Sahrens ddi_prop_op, /* prop_op */ 1224fa9e4066Sahrens NULL, /* streamtab */ 1225fa9e4066Sahrens D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 1226fa9e4066Sahrens CB_REV, /* version */ 1227fa9e4066Sahrens zvol_aread, /* async read */ 1228fa9e4066Sahrens zvol_awrite, /* async write */ 1229fa9e4066Sahrens }; 1230fa9e4066Sahrens 1231fa9e4066Sahrens static struct dev_ops zfs_dev_ops = { 1232fa9e4066Sahrens DEVO_REV, /* version */ 1233fa9e4066Sahrens 0, /* refcnt */ 1234fa9e4066Sahrens zfs_info, /* info */ 1235fa9e4066Sahrens nulldev, /* identify */ 1236fa9e4066Sahrens nulldev, /* probe */ 1237fa9e4066Sahrens zfs_attach, /* attach */ 1238fa9e4066Sahrens zfs_detach, /* detach */ 1239fa9e4066Sahrens nodev, /* reset */ 1240fa9e4066Sahrens &zfs_cb_ops, /* driver operations */ 1241fa9e4066Sahrens NULL /* no bus operations */ 1242fa9e4066Sahrens }; 1243fa9e4066Sahrens 1244fa9e4066Sahrens static struct modldrv zfs_modldrv = { 1245fa9e4066Sahrens &mod_driverops, "ZFS storage pool version 1", &zfs_dev_ops 1246fa9e4066Sahrens }; 1247fa9e4066Sahrens 1248fa9e4066Sahrens static struct modlinkage modlinkage = { 1249fa9e4066Sahrens MODREV_1, 1250fa9e4066Sahrens (void *)&zfs_modlfs, 1251fa9e4066Sahrens (void *)&zfs_modldrv, 1252fa9e4066Sahrens NULL 1253fa9e4066Sahrens }; 1254fa9e4066Sahrens 1255fa9e4066Sahrens int 1256fa9e4066Sahrens _init(void) 1257fa9e4066Sahrens { 1258fa9e4066Sahrens int error; 1259fa9e4066Sahrens 1260a0965f35Sbonwick spa_init(FREAD | FWRITE); 1261a0965f35Sbonwick zfs_init(); 1262a0965f35Sbonwick zvol_init(); 1263a0965f35Sbonwick 1264a0965f35Sbonwick if ((error = mod_install(&modlinkage)) != 0) { 1265a0965f35Sbonwick zvol_fini(); 1266a0965f35Sbonwick zfs_fini(); 1267a0965f35Sbonwick spa_fini(); 1268fa9e4066Sahrens return (error); 1269a0965f35Sbonwick } 1270fa9e4066Sahrens 1271fa9e4066Sahrens error = ldi_ident_from_mod(&modlinkage, &zfs_li); 1272fa9e4066Sahrens ASSERT(error == 0); 1273fa9e4066Sahrens 1274fa9e4066Sahrens return (0); 1275fa9e4066Sahrens } 1276fa9e4066Sahrens 1277fa9e4066Sahrens int 1278fa9e4066Sahrens _fini(void) 1279fa9e4066Sahrens { 1280fa9e4066Sahrens int error; 1281fa9e4066Sahrens 1282fa9e4066Sahrens if (spa_busy() || zfs_busy() || zvol_busy()) 1283fa9e4066Sahrens return (EBUSY); 1284fa9e4066Sahrens 1285fa9e4066Sahrens if ((error = mod_remove(&modlinkage)) != 0) 1286fa9e4066Sahrens return (error); 1287fa9e4066Sahrens 1288fa9e4066Sahrens zvol_fini(); 1289fa9e4066Sahrens zfs_fini(); 1290fa9e4066Sahrens spa_fini(); 1291fa9e4066Sahrens 1292fa9e4066Sahrens ldi_ident_release(zfs_li); 1293fa9e4066Sahrens zfs_li = NULL; 1294fa9e4066Sahrens 1295fa9e4066Sahrens return (error); 1296fa9e4066Sahrens } 1297fa9e4066Sahrens 1298fa9e4066Sahrens int 1299fa9e4066Sahrens _info(struct modinfo *modinfop) 1300fa9e4066Sahrens { 1301fa9e4066Sahrens return (mod_info(&modlinkage, modinfop)); 1302fa9e4066Sahrens } 1303