include/libzfs.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  25  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  26  * Copyright (c) 2013 Steven Hartland. All rights reserved.
  27  * Copyright (c) 2016, Intel Corporation.
  28  * Copyright 2016 Nexenta Systems, Inc.
  29  */
  30
  31 #ifndef _LIBZFS_H
  32 #define _LIBZFS_H
  33
  34 #include <assert.h>
  35 #include <libnvpair.h>
  36 #include <sys/mnttab.h>
  37 #include <sys/param.h>
  38 #include <sys/types.h>
  39 #include <sys/varargs.h>
  40 #include <sys/fs/zfs.h>
  41 #include <sys/avl.h>
  42 #include <ucred.h>
  43 #include <libzfs_core.h>
  44
  45 #ifdef  __cplusplus
  46 extern "C" {
  47 #endif
  48
  49 /*
  50  * Miscellaneous ZFS constants
  51  */
  52 #define ZFS_MAXPROPLEN          MAXPATHLEN
  53 #define ZPOOL_MAXPROPLEN        MAXPATHLEN
  54
  55 /*
  56  * Default device paths
  57  */
  58 #define DISK_ROOT               "/dev"
  59 #define UDISK_ROOT              "/dev/disk"
  60 #define ZVOL_ROOT               "/dev/zvol"
  61
  62 /*
  63  * Default wait time for a device name to be created.
  64  */
  65 #define DISK_LABEL_WAIT         (30 * 1000)  /* 30 seconds */
  66
  67 #define IMPORT_ORDER_PREFERRED_1        1
  68 #define IMPORT_ORDER_PREFERRED_2        2
  69 #define IMPORT_ORDER_SCAN_OFFSET        10
  70 #define IMPORT_ORDER_DEFAULT            100
  71 #define DEFAULT_IMPORT_PATH_SIZE        9
  72 extern char *zpool_default_import_path[DEFAULT_IMPORT_PATH_SIZE];
  73
  74 /*
  75  * libzfs errors
  76  */
  77 typedef enum zfs_error {
  78         EZFS_SUCCESS = 0,       /* no error -- success */
  79         EZFS_NOMEM = 2000,      /* out of memory */
  80         EZFS_BADPROP,           /* invalid property value */
  81         EZFS_PROPREADONLY,      /* cannot set readonly property */
  82         EZFS_PROPTYPE,          /* property does not apply to dataset type */
  83         EZFS_PROPNONINHERIT,    /* property is not inheritable */
  84         EZFS_PROPSPACE,         /* bad quota or reservation */
  85         EZFS_BADTYPE,           /* dataset is not of appropriate type */
  86         EZFS_BUSY,              /* pool or dataset is busy */
  87         EZFS_EXISTS,            /* pool or dataset already exists */
  88         EZFS_NOENT,             /* no such pool or dataset */
  89         EZFS_BADSTREAM,         /* bad backup stream */
  90         EZFS_DSREADONLY,        /* dataset is readonly */
  91         EZFS_VOLTOOBIG,         /* volume is too large for 32-bit system */
  92         EZFS_INVALIDNAME,       /* invalid dataset name */
  93         EZFS_BADRESTORE,        /* unable to restore to destination */
  94         EZFS_BADBACKUP,         /* backup failed */
  95         EZFS_BADTARGET,         /* bad attach/detach/replace target */
  96         EZFS_NODEVICE,          /* no such device in pool */
  97         EZFS_BADDEV,            /* invalid device to add */
  98         EZFS_NOREPLICAS,        /* no valid replicas */
  99         EZFS_RESILVERING,       /* currently resilvering */
 100         EZFS_BADVERSION,        /* unsupported version */
 101         EZFS_POOLUNAVAIL,       /* pool is currently unavailable */
 102         EZFS_DEVOVERFLOW,       /* too many devices in one vdev */
 103         EZFS_BADPATH,           /* must be an absolute path */
 104         EZFS_CROSSTARGET,       /* rename or clone across pool or dataset */
 105         EZFS_ZONED,             /* used improperly in local zone */
 106         EZFS_MOUNTFAILED,       /* failed to mount dataset */
 107         EZFS_UMOUNTFAILED,      /* failed to unmount dataset */
 108         EZFS_UNSHARENFSFAILED,  /* unshare(1M) failed */
 109         EZFS_SHARENFSFAILED,    /* share(1M) failed */
 110         EZFS_PERM,              /* permission denied */
 111         EZFS_NOSPC,             /* out of space */
 112         EZFS_FAULT,             /* bad address */
 113         EZFS_IO,                /* I/O error */
 114         EZFS_INTR,              /* signal received */
 115         EZFS_ISSPARE,           /* device is a hot spare */
 116         EZFS_INVALCONFIG,       /* invalid vdev configuration */
 117         EZFS_RECURSIVE,         /* recursive dependency */
 118         EZFS_NOHISTORY,         /* no history object */
 119         EZFS_POOLPROPS,         /* couldn't retrieve pool props */
 120         EZFS_POOL_NOTSUP,       /* ops not supported for this type of pool */
 121         EZFS_POOL_INVALARG,     /* invalid argument for this pool operation */
 122         EZFS_NAMETOOLONG,       /* dataset name is too long */
 123         EZFS_OPENFAILED,        /* open of device failed */
 124         EZFS_NOCAP,             /* couldn't get capacity */
 125         EZFS_LABELFAILED,       /* write of label failed */
 126         EZFS_BADWHO,            /* invalid permission who */
 127         EZFS_BADPERM,           /* invalid permission */
 128         EZFS_BADPERMSET,        /* invalid permission set name */
 129         EZFS_NODELEGATION,      /* delegated administration is disabled */
 130         EZFS_UNSHARESMBFAILED,  /* failed to unshare over smb */
 131         EZFS_SHARESMBFAILED,    /* failed to share over smb */
 132         EZFS_BADCACHE,          /* bad cache file */
 133         EZFS_ISL2CACHE,         /* device is for the level 2 ARC */
 134         EZFS_VDEVNOTSUP,        /* unsupported vdev type */
 135         EZFS_NOTSUP,            /* ops not supported on this dataset */
 136         EZFS_ACTIVE_SPARE,      /* pool has active shared spare devices */
 137         EZFS_UNPLAYED_LOGS,     /* log device has unplayed logs */
 138         EZFS_REFTAG_RELE,       /* snapshot release: tag not found */
 139         EZFS_REFTAG_HOLD,       /* snapshot hold: tag already exists */
 140         EZFS_TAGTOOLONG,        /* snapshot hold/rele: tag too long */
 141         EZFS_PIPEFAILED,        /* pipe create failed */
 142         EZFS_THREADCREATEFAILED, /* thread create failed */
 143         EZFS_POSTSPLIT_ONLINE,  /* onlining a disk after splitting it */
 144         EZFS_SCRUBBING,         /* currently scrubbing */
 145         EZFS_NO_SCRUB,          /* no active scrub */
 146         EZFS_DIFF,              /* general failure of zfs diff */
 147         EZFS_DIFFDATA,          /* bad zfs diff data */
 148         EZFS_POOLREADONLY,      /* pool is in read-only mode */
 149         EZFS_UNKNOWN
 150 } zfs_error_t;
 151
 152 /*
 153  * The following data structures are all part
 154  * of the zfs_allow_t data structure which is
 155  * used for printing 'allow' permissions.
 156  * It is a linked list of zfs_allow_t's which
 157  * then contain avl tree's for user/group/sets/...
 158  * and each one of the entries in those trees have
 159  * avl tree's for the permissions they belong to and
 160  * whether they are local,descendent or local+descendent
 161  * permissions.  The AVL trees are used primarily for
 162  * sorting purposes, but also so that we can quickly find
 163  * a given user and or permission.
 164  */
 165 typedef struct zfs_perm_node {
 166         avl_node_t z_node;
 167         char z_pname[MAXPATHLEN];
 168 } zfs_perm_node_t;
 169
 170 typedef struct zfs_allow_node {
 171         avl_node_t z_node;
 172         char z_key[MAXPATHLEN];         /* name, such as joe */
 173         avl_tree_t z_localdescend;      /* local+descendent perms */
 174         avl_tree_t z_local;             /* local permissions */
 175         avl_tree_t z_descend;           /* descendent permissions */
 176 } zfs_allow_node_t;
 177
 178 typedef struct zfs_allow {
 179         struct zfs_allow *z_next;
 180         char z_setpoint[MAXPATHLEN];
 181         avl_tree_t z_sets;
 182         avl_tree_t z_crperms;
 183         avl_tree_t z_user;
 184         avl_tree_t z_group;
 185         avl_tree_t z_everyone;
 186 } zfs_allow_t;
 187
 188 /*
 189  * Basic handle types
 190  */
 191 typedef struct zfs_handle zfs_handle_t;
 192 typedef struct zpool_handle zpool_handle_t;
 193 typedef struct libzfs_handle libzfs_handle_t;
 194
 195 /*
 196  * Library initialization
 197  */
 198 extern libzfs_handle_t *libzfs_init(void);
 199 extern void libzfs_fini(libzfs_handle_t *);
 200
 201 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *);
 202 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *);
 203
 204 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t);
 205
 206 extern void zfs_save_arguments(int argc, char **, char *, int);
 207 extern int zpool_log_history(libzfs_handle_t *, const char *);
 208
 209 extern int libzfs_errno(libzfs_handle_t *);
 210 extern const char *libzfs_error_init(int);
 211 extern const char *libzfs_error_action(libzfs_handle_t *);
 212 extern const char *libzfs_error_description(libzfs_handle_t *);
 213 extern int zfs_standard_error(libzfs_handle_t *, int, const char *);
 214 extern void libzfs_mnttab_init(libzfs_handle_t *);
 215 extern void libzfs_mnttab_fini(libzfs_handle_t *);
 216 extern void libzfs_mnttab_cache(libzfs_handle_t *, boolean_t);
 217 extern int libzfs_mnttab_find(libzfs_handle_t *, const char *,
 218     struct mnttab *);
 219 extern void libzfs_mnttab_add(libzfs_handle_t *, const char *,
 220     const char *, const char *);
 221 extern void libzfs_mnttab_remove(libzfs_handle_t *, const char *);
 222
 223 /*
 224  * Basic handle functions
 225  */
 226 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *);
 227 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *);
 228 extern void zpool_close(zpool_handle_t *);
 229 extern const char *zpool_get_name(zpool_handle_t *);
 230 extern int zpool_get_state(zpool_handle_t *);
 231 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t);
 232 extern const char *zpool_pool_state_to_name(pool_state_t);
 233 extern void zpool_free_handles(libzfs_handle_t *);
 234
 235 /*
 236  * Iterate over all active pools in the system.
 237  */
 238 typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
 239 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *);
 240 extern boolean_t zpool_skip_pool(const char *);
 241
 242 /*
 243  * Functions to create and destroy pools
 244  */
 245 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
 246     nvlist_t *, nvlist_t *);
 247 extern int zpool_destroy(zpool_handle_t *, const char *);
 248 extern int zpool_add(zpool_handle_t *, nvlist_t *);
 249
 250 typedef struct splitflags {
 251         /* do not split, but return the config that would be split off */
 252         int dryrun : 1;
 253
 254         /* after splitting, import the pool */
 255         int import : 1;
 256         int name_flags;
 257 } splitflags_t;
 258
 259 /*
 260  * Functions to manipulate pool and vdev state
 261  */
 262 extern int zpool_scan(zpool_handle_t *, pool_scan_func_t);
 263 extern int zpool_clear(zpool_handle_t *, const char *, nvlist_t *);
 264 extern int zpool_reguid(zpool_handle_t *);
 265 extern int zpool_reopen(zpool_handle_t *);
 266
 267 extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
 268     vdev_state_t *);
 269 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t);
 270 extern int zpool_vdev_attach(zpool_handle_t *, const char *,
 271     const char *, nvlist_t *, int);
 272 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
 273 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
 274 extern int zpool_vdev_split(zpool_handle_t *, char *, nvlist_t **, nvlist_t *,
 275     splitflags_t);
 276
 277 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t, vdev_aux_t);
 278 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t, vdev_aux_t);
 279 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t);
 280
 281 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *,
 282     boolean_t *, boolean_t *);
 283 extern nvlist_t *zpool_find_vdev_by_physpath(zpool_handle_t *, const char *,
 284     boolean_t *, boolean_t *, boolean_t *);
 285 extern int zpool_label_disk_wait(char *, int);
 286 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *);
 287
 288 int zfs_dev_is_dm(char *dev_name);
 289 char *zfs_get_underlying_path(char *dev_name);
 290 char *zfs_get_enclosure_sysfs_path(char *dev_name);
 291
 292 /*
 293  * Functions to manage pool properties
 294  */
 295 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
 296 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *,
 297     size_t proplen, zprop_source_t *, boolean_t literal);
 298 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t,
 299     zprop_source_t *);
 300
 301 extern const char *zpool_prop_to_name(zpool_prop_t);
 302 extern const char *zpool_prop_values(zpool_prop_t);
 303
 304 /*
 305  * Pool health statistics.
 306  */
 307 typedef enum {
 308         /*
 309          * The following correspond to faults as defined in the (fault.fs.zfs.*)
 310          * event namespace.  Each is associated with a corresponding message ID.
 311          */
 312         ZPOOL_STATUS_CORRUPT_CACHE,     /* corrupt /kernel/drv/zpool.cache */
 313         ZPOOL_STATUS_MISSING_DEV_R,     /* missing device with replicas */
 314         ZPOOL_STATUS_MISSING_DEV_NR,    /* missing device with no replicas */
 315         ZPOOL_STATUS_CORRUPT_LABEL_R,   /* bad device label with replicas */
 316         ZPOOL_STATUS_CORRUPT_LABEL_NR,  /* bad device label with no replicas */
 317         ZPOOL_STATUS_BAD_GUID_SUM,      /* sum of device guids didn't match */
 318         ZPOOL_STATUS_CORRUPT_POOL,      /* pool metadata is corrupted */
 319         ZPOOL_STATUS_CORRUPT_DATA,      /* data errors in user (meta)data */
 320         ZPOOL_STATUS_FAILING_DEV,       /* device experiencing errors */
 321         ZPOOL_STATUS_VERSION_NEWER,     /* newer on-disk version */
 322         ZPOOL_STATUS_HOSTID_MISMATCH,   /* last accessed by another system */
 323         ZPOOL_STATUS_IO_FAILURE_WAIT,   /* failed I/O, failmode 'wait' */
 324         ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
 325         ZPOOL_STATUS_BAD_LOG,           /* cannot read log chain(s) */
 326         ZPOOL_STATUS_ERRATA,            /* informational errata available */
 327
 328         /*
 329          * If the pool has unsupported features but can still be opened in
 330          * read-only mode, its status is ZPOOL_STATUS_UNSUP_FEAT_WRITE. If the
 331          * pool has unsupported features but cannot be opened at all, its
 332          * status is ZPOOL_STATUS_UNSUP_FEAT_READ.
 333          */
 334         ZPOOL_STATUS_UNSUP_FEAT_READ,   /* unsupported features for read */
 335         ZPOOL_STATUS_UNSUP_FEAT_WRITE,  /* unsupported features for write */
 336
 337         /*
 338          * These faults have no corresponding message ID.  At the time we are
 339          * checking the status, the original reason for the FMA fault (I/O or
 340          * checksum errors) has been lost.
 341          */
 342         ZPOOL_STATUS_FAULTED_DEV_R,     /* faulted device with replicas */
 343         ZPOOL_STATUS_FAULTED_DEV_NR,    /* faulted device with no replicas */
 344
 345         /*
 346          * The following are not faults per se, but still an error possibly
 347          * requiring administrative attention.  There is no corresponding
 348          * message ID.
 349          */
 350         ZPOOL_STATUS_VERSION_OLDER,     /* older legacy on-disk version */
 351         ZPOOL_STATUS_FEAT_DISABLED,     /* supported features are disabled */
 352         ZPOOL_STATUS_RESILVERING,       /* device being resilvered */
 353         ZPOOL_STATUS_OFFLINE_DEV,       /* device offline */
 354         ZPOOL_STATUS_REMOVED_DEV,       /* removed device */
 355
 356         /*
 357          * Finally, the following indicates a healthy pool.
 358          */
 359         ZPOOL_STATUS_OK
 360 } zpool_status_t;
 361
 362 extern unsigned long get_system_hostid(void);
 363 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **,
 364     zpool_errata_t *);
 365 extern zpool_status_t zpool_import_status(nvlist_t *, char **,
 366     zpool_errata_t *);
 367 extern void zpool_dump_ddt(const ddt_stat_t *dds, const ddt_histogram_t *ddh);
 368
 369 /*
 370  * Statistics and configuration functions.
 371  */
 372 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
 373 extern nvlist_t *zpool_get_features(zpool_handle_t *);
 374 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
 375 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
 376
 377 /*
 378  * Import and export functions
 379  */
 380 extern int zpool_export(zpool_handle_t *, boolean_t, const char *);
 381 extern int zpool_export_force(zpool_handle_t *, const char *);
 382 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
 383     char *altroot);
 384 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
 385     nvlist_t *, int);
 386 extern void zpool_print_unsup_feat(nvlist_t *config);
 387
 388 /*
 389  * Search for pools to import
 390  */
 391
 392 typedef struct importargs {
 393         char **path;            /* a list of paths to search            */
 394         int paths;              /* number of paths to search            */
 395         char *poolname;         /* name of a pool to find               */
 396         uint64_t guid;          /* guid of a pool to find               */
 397         char *cachefile;        /* cachefile to use for import          */
 398         int can_be_active : 1;  /* can the pool be active?              */
 399         int unique : 1;         /* does 'poolname' already exist?       */
 400         int exists : 1;         /* set on return if pool already exists */
 401         int scan : 1;           /* prefer scanning to libblkid cache    */
 402 } importargs_t;
 403
 404 extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *);
 405
 406 /* legacy pool search routines */
 407 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
 408 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
 409     char *, uint64_t);
 410
 411 /*
 412  * Miscellaneous pool functions
 413  */
 414 struct zfs_cmd;
 415
 416 extern const char *zfs_history_event_names[];
 417
 418 typedef enum {
 419         VDEV_NAME_PATH          = 1 << 0,
 420         VDEV_NAME_GUID          = 1 << 1,
 421         VDEV_NAME_FOLLOW_LINKS  = 1 << 2,
 422         VDEV_NAME_TYPE_ID       = 1 << 3,
 423 } vdev_name_t;
 424
 425 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *,
 426     int name_flags);
 427 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
 428 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
 429 extern int zpool_history_unpack(char *, uint64_t, uint64_t *,
 430     nvlist_t ***, uint_t *);
 431 extern int zpool_events_next(libzfs_handle_t *, nvlist_t **, int *, unsigned,
 432     int);
 433 extern int zpool_events_clear(libzfs_handle_t *, int *);
 434 extern int zpool_events_seek(libzfs_handle_t *, uint64_t, int);
 435 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
 436     size_t len);
 437 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
 438 extern int zpool_get_physpath(zpool_handle_t *, char *, size_t);
 439 extern void zpool_explain_recover(libzfs_handle_t *, const char *, int,
 440     nvlist_t *);
 441
 442 /*
 443  * Basic handle manipulations.  These functions do not create or destroy the
 444  * underlying datasets, only the references to them.
 445  */
 446 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
 447 extern zfs_handle_t *zfs_handle_dup(zfs_handle_t *);
 448 extern void zfs_close(zfs_handle_t *);
 449 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
 450 extern const char *zfs_get_name(const zfs_handle_t *);
 451 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
 452 extern const char *zfs_get_pool_name(const zfs_handle_t *);
 453
 454 /*
 455  * Property management functions.  Some functions are shared with the kernel,
 456  * and are found in sys/fs/zfs.h.
 457  */
 458
 459 /*
 460  * zfs dataset property management
 461  */
 462 extern const char *zfs_prop_default_string(zfs_prop_t);
 463 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
 464 extern const char *zfs_prop_column_name(zfs_prop_t);
 465 extern boolean_t zfs_prop_align_right(zfs_prop_t);
 466
 467 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
 468     nvlist_t *, uint64_t, zfs_handle_t *, zpool_handle_t *, const char *);
 469
 470 extern const char *zfs_prop_to_name(zfs_prop_t);
 471 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
 472 extern int zfs_prop_set_list(zfs_handle_t *, nvlist_t *);
 473 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
 474     zprop_source_t *, char *, size_t, boolean_t);
 475 extern int zfs_prop_get_recvd(zfs_handle_t *, const char *, char *, size_t,
 476     boolean_t);
 477 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
 478     zprop_source_t *, char *, size_t);
 479 extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
 480     uint64_t *propvalue);
 481 extern int zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
 482     char *propbuf, int proplen, boolean_t literal);
 483 extern int zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
 484     uint64_t *propvalue);
 485 extern int zfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
 486     char *propbuf, int proplen, boolean_t literal);
 487 extern int zfs_prop_get_feature(zfs_handle_t *zhp, const char *propname,
 488     char *buf, size_t len);
 489 extern uint64_t getprop_uint64(zfs_handle_t *, zfs_prop_t, char **);
 490 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
 491 extern int zfs_prop_inherit(zfs_handle_t *, const char *, boolean_t);
 492 extern const char *zfs_prop_values(zfs_prop_t);
 493 extern int zfs_prop_is_string(zfs_prop_t prop);
 494 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
 495 extern nvlist_t *zfs_get_recvd_props(zfs_handle_t *);
 496 extern nvlist_t *zfs_get_clones_nvl(zfs_handle_t *);
 497
 498 typedef struct zprop_list {
 499         int             pl_prop;
 500         char            *pl_user_prop;
 501         struct zprop_list *pl_next;
 502         boolean_t       pl_all;
 503         size_t          pl_width;
 504         size_t          pl_recvd_width;
 505         boolean_t       pl_fixed;
 506 } zprop_list_t;
 507
 508 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **, boolean_t,
 509     boolean_t);
 510 extern void zfs_prune_proplist(zfs_handle_t *, uint8_t *);
 511
 512 #define ZFS_MOUNTPOINT_NONE     "none"
 513 #define ZFS_MOUNTPOINT_LEGACY   "legacy"
 514
 515 #define ZFS_FEATURE_DISABLED    "disabled"
 516 #define ZFS_FEATURE_ENABLED     "enabled"
 517 #define ZFS_FEATURE_ACTIVE      "active"
 518
 519 #define ZFS_UNSUPPORTED_INACTIVE        "inactive"
 520 #define ZFS_UNSUPPORTED_READONLY        "readonly"
 521
 522 /*
 523  * zpool property management
 524  */
 525 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
 526 extern int zpool_prop_get_feature(zpool_handle_t *, const char *, char *,
 527     size_t);
 528 extern const char *zpool_prop_default_string(zpool_prop_t);
 529 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
 530 extern const char *zpool_prop_column_name(zpool_prop_t);
 531 extern boolean_t zpool_prop_align_right(zpool_prop_t);
 532
 533 /*
 534  * Functions shared by zfs and zpool property management.
 535  */
 536 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
 537     boolean_t ordered, zfs_type_t type);
 538 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
 539     zfs_type_t);
 540 extern void zprop_free_list(zprop_list_t *);
 541
 542 #define ZFS_GET_NCOLS   5
 543
 544 typedef enum {
 545         GET_COL_NONE,
 546         GET_COL_NAME,
 547         GET_COL_PROPERTY,
 548         GET_COL_VALUE,
 549         GET_COL_RECVD,
 550         GET_COL_SOURCE
 551 } zfs_get_column_t;
 552
 553 /*
 554  * Functions for printing zfs or zpool properties
 555  */
 556 typedef struct zprop_get_cbdata {
 557         int cb_sources;
 558         zfs_get_column_t cb_columns[ZFS_GET_NCOLS];
 559         int cb_colwidths[ZFS_GET_NCOLS + 1];
 560         boolean_t cb_scripted;
 561         boolean_t cb_literal;
 562         boolean_t cb_first;
 563         zprop_list_t *cb_proplist;
 564         zfs_type_t cb_type;
 565 } zprop_get_cbdata_t;
 566
 567 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
 568     const char *, const char *, zprop_source_t, const char *,
 569     const char *);
 570
 571 /*
 572  * Iterator functions.
 573  */
 574 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
 575 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
 576 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
 577 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 578 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
 579 extern int zfs_iter_snapshots(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 580 extern int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *);
 581 extern int zfs_iter_snapspec(zfs_handle_t *, const char *, zfs_iter_f, void *);
 582 extern int zfs_iter_bookmarks(zfs_handle_t *, zfs_iter_f, void *);
 583
 584 typedef struct get_all_cb {
 585         zfs_handle_t    **cb_handles;
 586         size_t          cb_alloc;
 587         size_t          cb_used;
 588         boolean_t       cb_verbose;
 589         int             (*cb_getone)(zfs_handle_t *, void *);
 590 } get_all_cb_t;
 591
 592 void libzfs_add_handle(get_all_cb_t *, zfs_handle_t *);
 593 int libzfs_dataset_cmp(const void *, const void *);
 594
 595 /*
 596  * Functions to create and destroy datasets.
 597  */
 598 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
 599     nvlist_t *);
 600 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
 601 extern int zfs_destroy(zfs_handle_t *, boolean_t);
 602 extern int zfs_destroy_snaps(zfs_handle_t *, char *, boolean_t);
 603 extern int zfs_destroy_snaps_nvl(libzfs_handle_t *, nvlist_t *, boolean_t);
 604 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
 605 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
 606 extern int zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps,
 607     nvlist_t *props);
 608 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
 609 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t, boolean_t);
 610
 611 typedef struct sendflags {
 612         /* print informational messages (ie, -v was specified) */
 613         boolean_t verbose;
 614
 615         /* recursive send  (ie, -R) */
 616         boolean_t replicate;
 617
 618         /* for incrementals, do all intermediate snapshots */
 619         boolean_t doall;
 620
 621         /* if dataset is a clone, do incremental from its origin */
 622         boolean_t fromorigin;
 623
 624         /* do deduplication */
 625         boolean_t dedup;
 626
 627         /* send properties (ie, -p) */
 628         boolean_t props;
 629
 630         /* do not send (no-op, ie. -n) */
 631         boolean_t dryrun;
 632
 633         /* parsable verbose output (ie. -P) */
 634         boolean_t parsable;
 635
 636         /* show progress (ie. -v) */
 637         boolean_t progress;
 638
 639         /* large blocks (>128K) are permitted */
 640         boolean_t largeblock;
 641
 642         /* WRITE_EMBEDDED records of type DATA are permitted */
 643         boolean_t embed_data;
 644
 645         /* compressed WRITE records are permitted */
 646         boolean_t compress;
 647 } sendflags_t;
 648
 649 typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
 650
 651 extern int zfs_send(zfs_handle_t *, const char *, const char *,
 652     sendflags_t *, int, snapfilter_cb_t, void *, nvlist_t **);
 653 extern int zfs_send_one(zfs_handle_t *, const char *, int, enum lzc_send_flags);
 654 extern int zfs_send_resume(libzfs_handle_t *, sendflags_t *, int outfd,
 655     const char *);
 656 extern nvlist_t *zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl,
 657     const char *token);
 658
 659 extern int zfs_promote(zfs_handle_t *);
 660 extern int zfs_hold(zfs_handle_t *, const char *, const char *,
 661     boolean_t, int);
 662 extern int zfs_hold_nvl(zfs_handle_t *, int, nvlist_t *);
 663 extern int zfs_release(zfs_handle_t *, const char *, const char *, boolean_t);
 664 extern int zfs_get_holds(zfs_handle_t *, nvlist_t **);
 665 extern uint64_t zvol_volsize_to_reservation(uint64_t, nvlist_t *);
 666
 667 typedef int (*zfs_userspace_cb_t)(void *arg, const char *domain,
 668     uid_t rid, uint64_t space);
 669
 670 extern int zfs_userspace(zfs_handle_t *, zfs_userquota_prop_t,
 671     zfs_userspace_cb_t, void *);
 672
 673 extern int zfs_get_fsacl(zfs_handle_t *, nvlist_t **);
 674 extern int zfs_set_fsacl(zfs_handle_t *, boolean_t, nvlist_t *);
 675
 676 typedef struct recvflags {
 677         /* print informational messages (ie, -v was specified) */
 678         boolean_t verbose;
 679
 680         /* the destination is a prefix, not the exact fs (ie, -d) */
 681         boolean_t isprefix;
 682
 683         /*
 684          * Only the tail of the sent snapshot path is appended to the
 685          * destination to determine the received snapshot name (ie, -e).
 686          */
 687         boolean_t istail;
 688
 689         /* do not actually do the recv, just check if it would work (ie, -n) */
 690         boolean_t dryrun;
 691
 692         /* rollback/destroy filesystems as necessary (eg, -F) */
 693         boolean_t force;
 694
 695         /* set "canmount=off" on all modified filesystems */
 696         boolean_t canmountoff;
 697
 698         /*
 699          * Mark the file systems as "resumable" and do not destroy them if the
 700          * receive is interrupted
 701          */
 702         boolean_t resumable;
 703
 704         /* byteswap flag is used internally; callers need not specify */
 705         boolean_t byteswap;
 706
 707         /* do not mount file systems as they are extracted (private) */
 708         boolean_t nomount;
 709 } recvflags_t;
 710
 711 extern int zfs_receive(libzfs_handle_t *, const char *, nvlist_t *,
 712     recvflags_t *, int, avl_tree_t *);
 713
 714 typedef enum diff_flags {
 715         ZFS_DIFF_PARSEABLE = 0x1,
 716         ZFS_DIFF_TIMESTAMP = 0x2,
 717         ZFS_DIFF_CLASSIFY = 0x4
 718 } diff_flags_t;
 719
 720 extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
 721     int);
 722
 723 /*
 724  * Miscellaneous functions.
 725  */
 726 extern const char *zfs_type_to_name(zfs_type_t);
 727 extern void zfs_refresh_properties(zfs_handle_t *);
 728 extern int zfs_name_valid(const char *, zfs_type_t);
 729 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
 730 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
 731     zfs_type_t);
 732 extern int zfs_spa_version(zfs_handle_t *, int *);
 733 extern boolean_t zfs_bookmark_exists(const char *path);
 734 extern int zfs_append_partition(char *path, size_t max_len);
 735 extern int zfs_resolve_shortname(const char *name, char *path, size_t pathlen);
 736 extern int zfs_strcmp_pathname(char *name, char *cmp_name, int wholedisk);
 737 extern int zfs_path_order(char *path, int *order);
 738
 739 /*
 740  * Mount support functions.
 741  */
 742 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
 743 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
 744 extern int zfs_mount(zfs_handle_t *, const char *, int);
 745 extern int zfs_unmount(zfs_handle_t *, const char *, int);
 746 extern int zfs_unmountall(zfs_handle_t *, int);
 747
 748 /*
 749  * Share support functions.
 750  */
 751 extern boolean_t zfs_is_shared(zfs_handle_t *);
 752 extern int zfs_share(zfs_handle_t *);
 753 extern int zfs_unshare(zfs_handle_t *);
 754
 755 /*
 756  * Protocol-specific share support functions.
 757  */
 758 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
 759 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
 760 extern int zfs_share_nfs(zfs_handle_t *);
 761 extern int zfs_share_smb(zfs_handle_t *);
 762 extern int zfs_shareall(zfs_handle_t *);
 763 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
 764 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
 765 extern int zfs_unshareall_nfs(zfs_handle_t *);
 766 extern int zfs_unshareall_smb(zfs_handle_t *);
 767 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
 768 extern int zfs_unshareall_bytype(zfs_handle_t *, const char *, const char *);
 769 extern int zfs_unshareall(zfs_handle_t *);
 770 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
 771     void *, void *, int, zfs_share_op_t);
 772
 773 enum zfs_nicenum_format {
 774         ZFS_NICENUM_1024 = 0,
 775         ZFS_NICENUM_TIME = 1,
 776         ZFS_NICENUM_RAW = 2
 777 };
 778
 779 /*
 780  * Utility function to convert a number to a human-readable form.
 781  */
 782 extern void zfs_nicenum(uint64_t, char *, size_t);
 783 extern void zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
 784     enum zfs_nicenum_format type);
 785
 786
 787 extern void zfs_nicetime(uint64_t, char *, size_t);
 788 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
 789
 790 /*
 791  * Utility functions to run an external process.
 792  */
 793 #define STDOUT_VERBOSE  0x01
 794 #define STDERR_VERBOSE  0x02
 795
 796 int libzfs_run_process(const char *, char **, int flags);
 797
 798 /*
 799  * Given a device or file, determine if it is part of a pool.
 800  */
 801 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
 802     boolean_t *);
 803
 804 /*
 805  * Label manipulation.
 806  */
 807 extern int zpool_read_label(int, nvlist_t **, int *);
 808 extern int zpool_clear_label(int);
 809
 810 /*
 811  * Management interfaces for SMB ACL files
 812  */
 813
 814 int zfs_smb_acl_add(libzfs_handle_t *, char *, char *, char *);
 815 int zfs_smb_acl_remove(libzfs_handle_t *, char *, char *, char *);
 816 int zfs_smb_acl_purge(libzfs_handle_t *, char *, char *);
 817 int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
 818
 819 /*
 820  * Enable and disable datasets within a pool by mounting/unmounting and
 821  * sharing/unsharing them.
 822  */
 823 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
 824 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
 825
 826 /*
 827  * Mappings between vdev and FRU.
 828  */
 829 extern void libzfs_fru_refresh(libzfs_handle_t *);
 830 extern const char *libzfs_fru_lookup(libzfs_handle_t *, const char *);
 831 extern const char *libzfs_fru_devpath(libzfs_handle_t *, const char *);
 832 extern boolean_t libzfs_fru_compare(libzfs_handle_t *, const char *,
 833     const char *);
 834 extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *);
 835 extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
 836
 837 /*
 838  * Support for Linux libudev derived persistent device strings
 839  */
 840 extern boolean_t is_mpath_whole_disk(const char *);
 841 extern void update_vdev_config_dev_strs(nvlist_t *);
 842 extern char *zfs_strip_partition(char *);
 843 extern char *zfs_strip_partition_path(char *);
 844
 845 #ifdef HAVE_LIBUDEV
 846 struct udev_device;
 847
 848 extern boolean_t udev_is_mpath(struct udev_device *dev);
 849 extern int zfs_device_get_devid(struct udev_device *, char *, size_t);
 850 extern int zfs_device_get_physical(struct udev_device *, char *, size_t);
 851 #endif
 852
 853 #ifdef  __cplusplus
 854 }
 855 #endif
 856
 857 #endif  /* _LIBZFS_H */