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 int zfs_dev_is_whole_disk(char *dev_name);
 290 char *zfs_get_underlying_path(char *dev_name);
 291 char *zfs_get_enclosure_sysfs_path(char *dev_name);
 292
 293 /*
 294  * Functions to manage pool properties
 295  */
 296 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
 297 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *,
 298     size_t proplen, zprop_source_t *, boolean_t literal);
 299 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t,
 300     zprop_source_t *);
 301
 302 extern const char *zpool_prop_to_name(zpool_prop_t);
 303 extern const char *zpool_prop_values(zpool_prop_t);
 304
 305 /*
 306  * Pool health statistics.
 307  */
 308 typedef enum {
 309         /*
 310          * The following correspond to faults as defined in the (fault.fs.zfs.*)
 311          * event namespace.  Each is associated with a corresponding message ID.
 312          */
 313         ZPOOL_STATUS_CORRUPT_CACHE,     /* corrupt /kernel/drv/zpool.cache */
 314         ZPOOL_STATUS_MISSING_DEV_R,     /* missing device with replicas */
 315         ZPOOL_STATUS_MISSING_DEV_NR,    /* missing device with no replicas */
 316         ZPOOL_STATUS_CORRUPT_LABEL_R,   /* bad device label with replicas */
 317         ZPOOL_STATUS_CORRUPT_LABEL_NR,  /* bad device label with no replicas */
 318         ZPOOL_STATUS_BAD_GUID_SUM,      /* sum of device guids didn't match */
 319         ZPOOL_STATUS_CORRUPT_POOL,      /* pool metadata is corrupted */
 320         ZPOOL_STATUS_CORRUPT_DATA,      /* data errors in user (meta)data */
 321         ZPOOL_STATUS_FAILING_DEV,       /* device experiencing errors */
 322         ZPOOL_STATUS_VERSION_NEWER,     /* newer on-disk version */
 323         ZPOOL_STATUS_HOSTID_MISMATCH,   /* last accessed by another system */
 324         ZPOOL_STATUS_IO_FAILURE_WAIT,   /* failed I/O, failmode 'wait' */
 325         ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
 326         ZPOOL_STATUS_BAD_LOG,           /* cannot read log chain(s) */
 327         ZPOOL_STATUS_ERRATA,            /* informational errata available */
 328
 329         /*
 330          * If the pool has unsupported features but can still be opened in
 331          * read-only mode, its status is ZPOOL_STATUS_UNSUP_FEAT_WRITE. If the
 332          * pool has unsupported features but cannot be opened at all, its
 333          * status is ZPOOL_STATUS_UNSUP_FEAT_READ.
 334          */
 335         ZPOOL_STATUS_UNSUP_FEAT_READ,   /* unsupported features for read */
 336         ZPOOL_STATUS_UNSUP_FEAT_WRITE,  /* unsupported features for write */
 337
 338         /*
 339          * These faults have no corresponding message ID.  At the time we are
 340          * checking the status, the original reason for the FMA fault (I/O or
 341          * checksum errors) has been lost.
 342          */
 343         ZPOOL_STATUS_FAULTED_DEV_R,     /* faulted device with replicas */
 344         ZPOOL_STATUS_FAULTED_DEV_NR,    /* faulted device with no replicas */
 345
 346         /*
 347          * The following are not faults per se, but still an error possibly
 348          * requiring administrative attention.  There is no corresponding
 349          * message ID.
 350          */
 351         ZPOOL_STATUS_VERSION_OLDER,     /* older legacy on-disk version */
 352         ZPOOL_STATUS_FEAT_DISABLED,     /* supported features are disabled */
 353         ZPOOL_STATUS_RESILVERING,       /* device being resilvered */
 354         ZPOOL_STATUS_OFFLINE_DEV,       /* device offline */
 355         ZPOOL_STATUS_REMOVED_DEV,       /* removed device */
 356
 357         /*
 358          * Finally, the following indicates a healthy pool.
 359          */
 360         ZPOOL_STATUS_OK
 361 } zpool_status_t;
 362
 363 extern unsigned long get_system_hostid(void);
 364 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **,
 365     zpool_errata_t *);
 366 extern zpool_status_t zpool_import_status(nvlist_t *, char **,
 367     zpool_errata_t *);
 368 extern void zpool_dump_ddt(const ddt_stat_t *dds, const ddt_histogram_t *ddh);
 369
 370 /*
 371  * Statistics and configuration functions.
 372  */
 373 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
 374 extern nvlist_t *zpool_get_features(zpool_handle_t *);
 375 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
 376 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
 377
 378 /*
 379  * Import and export functions
 380  */
 381 extern int zpool_export(zpool_handle_t *, boolean_t, const char *);
 382 extern int zpool_export_force(zpool_handle_t *, const char *);
 383 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
 384     char *altroot);
 385 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
 386     nvlist_t *, int);
 387 extern void zpool_print_unsup_feat(nvlist_t *config);
 388
 389 /*
 390  * Search for pools to import
 391  */
 392
 393 typedef struct importargs {
 394         char **path;            /* a list of paths to search            */
 395         int paths;              /* number of paths to search            */
 396         char *poolname;         /* name of a pool to find               */
 397         uint64_t guid;          /* guid of a pool to find               */
 398         char *cachefile;        /* cachefile to use for import          */
 399         int can_be_active : 1;  /* can the pool be active?              */
 400         int unique : 1;         /* does 'poolname' already exist?       */
 401         int exists : 1;         /* set on return if pool already exists */
 402         int scan : 1;           /* prefer scanning to libblkid cache    */
 403 } importargs_t;
 404
 405 extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *);
 406
 407 /* legacy pool search routines */
 408 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
 409 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
 410     char *, uint64_t);
 411
 412 /*
 413  * Miscellaneous pool functions
 414  */
 415 struct zfs_cmd;
 416
 417 extern const char *zfs_history_event_names[];
 418
 419 typedef enum {
 420         VDEV_NAME_PATH          = 1 << 0,
 421         VDEV_NAME_GUID          = 1 << 1,
 422         VDEV_NAME_FOLLOW_LINKS  = 1 << 2,
 423         VDEV_NAME_TYPE_ID       = 1 << 3,
 424 } vdev_name_t;
 425
 426 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *,
 427     int name_flags);
 428 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
 429 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
 430 extern int zpool_history_unpack(char *, uint64_t, uint64_t *,
 431     nvlist_t ***, uint_t *);
 432 extern int zpool_events_next(libzfs_handle_t *, nvlist_t **, int *, unsigned,
 433     int);
 434 extern int zpool_events_clear(libzfs_handle_t *, int *);
 435 extern int zpool_events_seek(libzfs_handle_t *, uint64_t, int);
 436 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
 437     size_t len);
 438 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
 439 extern int zpool_get_physpath(zpool_handle_t *, char *, size_t);
 440 extern void zpool_explain_recover(libzfs_handle_t *, const char *, int,
 441     nvlist_t *);
 442
 443 /*
 444  * Basic handle manipulations.  These functions do not create or destroy the
 445  * underlying datasets, only the references to them.
 446  */
 447 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
 448 extern zfs_handle_t *zfs_handle_dup(zfs_handle_t *);
 449 extern void zfs_close(zfs_handle_t *);
 450 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
 451 extern const char *zfs_get_name(const zfs_handle_t *);
 452 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
 453 extern const char *zfs_get_pool_name(const zfs_handle_t *);
 454
 455 /*
 456  * Property management functions.  Some functions are shared with the kernel,
 457  * and are found in sys/fs/zfs.h.
 458  */
 459
 460 /*
 461  * zfs dataset property management
 462  */
 463 extern const char *zfs_prop_default_string(zfs_prop_t);
 464 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
 465 extern const char *zfs_prop_column_name(zfs_prop_t);
 466 extern boolean_t zfs_prop_align_right(zfs_prop_t);
 467
 468 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
 469     nvlist_t *, uint64_t, zfs_handle_t *, zpool_handle_t *, const char *);
 470
 471 extern const char *zfs_prop_to_name(zfs_prop_t);
 472 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
 473 extern int zfs_prop_set_list(zfs_handle_t *, nvlist_t *);
 474 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
 475     zprop_source_t *, char *, size_t, boolean_t);
 476 extern int zfs_prop_get_recvd(zfs_handle_t *, const char *, char *, size_t,
 477     boolean_t);
 478 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
 479     zprop_source_t *, char *, size_t);
 480 extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
 481     uint64_t *propvalue);
 482 extern int zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
 483     char *propbuf, int proplen, boolean_t literal);
 484 extern int zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
 485     uint64_t *propvalue);
 486 extern int zfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
 487     char *propbuf, int proplen, boolean_t literal);
 488 extern int zfs_prop_get_feature(zfs_handle_t *zhp, const char *propname,
 489     char *buf, size_t len);
 490 extern uint64_t getprop_uint64(zfs_handle_t *, zfs_prop_t, char **);
 491 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
 492 extern int zfs_prop_inherit(zfs_handle_t *, const char *, boolean_t);
 493 extern const char *zfs_prop_values(zfs_prop_t);
 494 extern int zfs_prop_is_string(zfs_prop_t prop);
 495 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
 496 extern nvlist_t *zfs_get_recvd_props(zfs_handle_t *);
 497 extern nvlist_t *zfs_get_clones_nvl(zfs_handle_t *);
 498
 499 typedef struct zprop_list {
 500         int             pl_prop;
 501         char            *pl_user_prop;
 502         struct zprop_list *pl_next;
 503         boolean_t       pl_all;
 504         size_t          pl_width;
 505         size_t          pl_recvd_width;
 506         boolean_t       pl_fixed;
 507 } zprop_list_t;
 508
 509 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **, boolean_t,
 510     boolean_t);
 511 extern void zfs_prune_proplist(zfs_handle_t *, uint8_t *);
 512
 513 #define ZFS_MOUNTPOINT_NONE     "none"
 514 #define ZFS_MOUNTPOINT_LEGACY   "legacy"
 515
 516 #define ZFS_FEATURE_DISABLED    "disabled"
 517 #define ZFS_FEATURE_ENABLED     "enabled"
 518 #define ZFS_FEATURE_ACTIVE      "active"
 519
 520 #define ZFS_UNSUPPORTED_INACTIVE        "inactive"
 521 #define ZFS_UNSUPPORTED_READONLY        "readonly"
 522
 523 /*
 524  * zpool property management
 525  */
 526 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
 527 extern int zpool_prop_get_feature(zpool_handle_t *, const char *, char *,
 528     size_t);
 529 extern const char *zpool_prop_default_string(zpool_prop_t);
 530 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
 531 extern const char *zpool_prop_column_name(zpool_prop_t);
 532 extern boolean_t zpool_prop_align_right(zpool_prop_t);
 533
 534 /*
 535  * Functions shared by zfs and zpool property management.
 536  */
 537 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
 538     boolean_t ordered, zfs_type_t type);
 539 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
 540     zfs_type_t);
 541 extern void zprop_free_list(zprop_list_t *);
 542
 543 #define ZFS_GET_NCOLS   5
 544
 545 typedef enum {
 546         GET_COL_NONE,
 547         GET_COL_NAME,
 548         GET_COL_PROPERTY,
 549         GET_COL_VALUE,
 550         GET_COL_RECVD,
 551         GET_COL_SOURCE
 552 } zfs_get_column_t;
 553
 554 /*
 555  * Functions for printing zfs or zpool properties
 556  */
 557 typedef struct zprop_get_cbdata {
 558         int cb_sources;
 559         zfs_get_column_t cb_columns[ZFS_GET_NCOLS];
 560         int cb_colwidths[ZFS_GET_NCOLS + 1];
 561         boolean_t cb_scripted;
 562         boolean_t cb_literal;
 563         boolean_t cb_first;
 564         zprop_list_t *cb_proplist;
 565         zfs_type_t cb_type;
 566 } zprop_get_cbdata_t;
 567
 568 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
 569     const char *, const char *, zprop_source_t, const char *,
 570     const char *);
 571
 572 /*
 573  * Iterator functions.
 574  */
 575 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
 576 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
 577 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
 578 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 579 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
 580 extern int zfs_iter_snapshots(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 581 extern int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *);
 582 extern int zfs_iter_snapspec(zfs_handle_t *, const char *, zfs_iter_f, void *);
 583 extern int zfs_iter_bookmarks(zfs_handle_t *, zfs_iter_f, void *);
 584
 585 typedef struct get_all_cb {
 586         zfs_handle_t    **cb_handles;
 587         size_t          cb_alloc;
 588         size_t          cb_used;
 589         boolean_t       cb_verbose;
 590         int             (*cb_getone)(zfs_handle_t *, void *);
 591 } get_all_cb_t;
 592
 593 void libzfs_add_handle(get_all_cb_t *, zfs_handle_t *);
 594 int libzfs_dataset_cmp(const void *, const void *);
 595
 596 /*
 597  * Functions to create and destroy datasets.
 598  */
 599 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
 600     nvlist_t *);
 601 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
 602 extern int zfs_destroy(zfs_handle_t *, boolean_t);
 603 extern int zfs_destroy_snaps(zfs_handle_t *, char *, boolean_t);
 604 extern int zfs_destroy_snaps_nvl(libzfs_handle_t *, nvlist_t *, boolean_t);
 605 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
 606 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
 607 extern int zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps,
 608     nvlist_t *props);
 609 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
 610 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t, boolean_t);
 611
 612 typedef struct sendflags {
 613         /* print informational messages (ie, -v was specified) */
 614         boolean_t verbose;
 615
 616         /* recursive send  (ie, -R) */
 617         boolean_t replicate;
 618
 619         /* for incrementals, do all intermediate snapshots */
 620         boolean_t doall;
 621
 622         /* if dataset is a clone, do incremental from its origin */
 623         boolean_t fromorigin;
 624
 625         /* do deduplication */
 626         boolean_t dedup;
 627
 628         /* send properties (ie, -p) */
 629         boolean_t props;
 630
 631         /* do not send (no-op, ie. -n) */
 632         boolean_t dryrun;
 633
 634         /* parsable verbose output (ie. -P) */
 635         boolean_t parsable;
 636
 637         /* show progress (ie. -v) */
 638         boolean_t progress;
 639
 640         /* large blocks (>128K) are permitted */
 641         boolean_t largeblock;
 642
 643         /* WRITE_EMBEDDED records of type DATA are permitted */
 644         boolean_t embed_data;
 645
 646         /* compressed WRITE records are permitted */
 647         boolean_t compress;
 648 } sendflags_t;
 649
 650 typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
 651
 652 extern int zfs_send(zfs_handle_t *, const char *, const char *,
 653     sendflags_t *, int, snapfilter_cb_t, void *, nvlist_t **);
 654 extern int zfs_send_one(zfs_handle_t *, const char *, int, enum lzc_send_flags);
 655 extern int zfs_send_resume(libzfs_handle_t *, sendflags_t *, int outfd,
 656     const char *);
 657 extern nvlist_t *zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl,
 658     const char *token);
 659
 660 extern int zfs_promote(zfs_handle_t *);
 661 extern int zfs_hold(zfs_handle_t *, const char *, const char *,
 662     boolean_t, int);
 663 extern int zfs_hold_nvl(zfs_handle_t *, int, nvlist_t *);
 664 extern int zfs_release(zfs_handle_t *, const char *, const char *, boolean_t);
 665 extern int zfs_get_holds(zfs_handle_t *, nvlist_t **);
 666 extern uint64_t zvol_volsize_to_reservation(uint64_t, nvlist_t *);
 667
 668 typedef int (*zfs_userspace_cb_t)(void *arg, const char *domain,
 669     uid_t rid, uint64_t space);
 670
 671 extern int zfs_userspace(zfs_handle_t *, zfs_userquota_prop_t,
 672     zfs_userspace_cb_t, void *);
 673
 674 extern int zfs_get_fsacl(zfs_handle_t *, nvlist_t **);
 675 extern int zfs_set_fsacl(zfs_handle_t *, boolean_t, nvlist_t *);
 676
 677 typedef struct recvflags {
 678         /* print informational messages (ie, -v was specified) */
 679         boolean_t verbose;
 680
 681         /* the destination is a prefix, not the exact fs (ie, -d) */
 682         boolean_t isprefix;
 683
 684         /*
 685          * Only the tail of the sent snapshot path is appended to the
 686          * destination to determine the received snapshot name (ie, -e).
 687          */
 688         boolean_t istail;
 689
 690         /* do not actually do the recv, just check if it would work (ie, -n) */
 691         boolean_t dryrun;
 692
 693         /* rollback/destroy filesystems as necessary (eg, -F) */
 694         boolean_t force;
 695
 696         /* set "canmount=off" on all modified filesystems */
 697         boolean_t canmountoff;
 698
 699         /*
 700          * Mark the file systems as "resumable" and do not destroy them if the
 701          * receive is interrupted
 702          */
 703         boolean_t resumable;
 704
 705         /* byteswap flag is used internally; callers need not specify */
 706         boolean_t byteswap;
 707
 708         /* do not mount file systems as they are extracted (private) */
 709         boolean_t nomount;
 710 } recvflags_t;
 711
 712 extern int zfs_receive(libzfs_handle_t *, const char *, nvlist_t *,
 713     recvflags_t *, int, avl_tree_t *);
 714
 715 typedef enum diff_flags {
 716         ZFS_DIFF_PARSEABLE = 0x1,
 717         ZFS_DIFF_TIMESTAMP = 0x2,
 718         ZFS_DIFF_CLASSIFY = 0x4
 719 } diff_flags_t;
 720
 721 extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
 722     int);
 723
 724 /*
 725  * Miscellaneous functions.
 726  */
 727 extern const char *zfs_type_to_name(zfs_type_t);
 728 extern void zfs_refresh_properties(zfs_handle_t *);
 729 extern int zfs_name_valid(const char *, zfs_type_t);
 730 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
 731 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
 732     zfs_type_t);
 733 extern int zfs_spa_version(zfs_handle_t *, int *);
 734 extern boolean_t zfs_bookmark_exists(const char *path);
 735 extern int zfs_append_partition(char *path, size_t max_len);
 736 extern int zfs_resolve_shortname(const char *name, char *path, size_t pathlen);
 737 extern int zfs_strcmp_pathname(char *name, char *cmp_name, int wholedisk);
 738 extern int zfs_path_order(char *path, int *order);
 739
 740 /*
 741  * Mount support functions.
 742  */
 743 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
 744 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
 745 extern int zfs_mount(zfs_handle_t *, const char *, int);
 746 extern int zfs_unmount(zfs_handle_t *, const char *, int);
 747 extern int zfs_unmountall(zfs_handle_t *, int);
 748
 749 /*
 750  * Share support functions.
 751  */
 752 extern boolean_t zfs_is_shared(zfs_handle_t *);
 753 extern int zfs_share(zfs_handle_t *);
 754 extern int zfs_unshare(zfs_handle_t *);
 755
 756 /*
 757  * Protocol-specific share support functions.
 758  */
 759 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
 760 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
 761 extern int zfs_share_nfs(zfs_handle_t *);
 762 extern int zfs_share_smb(zfs_handle_t *);
 763 extern int zfs_shareall(zfs_handle_t *);
 764 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
 765 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
 766 extern int zfs_unshareall_nfs(zfs_handle_t *);
 767 extern int zfs_unshareall_smb(zfs_handle_t *);
 768 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
 769 extern int zfs_unshareall_bytype(zfs_handle_t *, const char *, const char *);
 770 extern int zfs_unshareall(zfs_handle_t *);
 771 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
 772     void *, void *, int, zfs_share_op_t);
 773
 774 enum zfs_nicenum_format {
 775         ZFS_NICENUM_1024 = 0,
 776         ZFS_NICENUM_TIME = 1,
 777         ZFS_NICENUM_RAW = 2
 778 };
 779
 780 /*
 781  * Utility function to convert a number to a human-readable form.
 782  */
 783 extern void zfs_nicenum(uint64_t, char *, size_t);
 784 extern void zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
 785     enum zfs_nicenum_format type);
 786
 787
 788 extern void zfs_nicetime(uint64_t, char *, size_t);
 789 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
 790
 791 /*
 792  * Utility functions to run an external process.
 793  */
 794 #define STDOUT_VERBOSE  0x01
 795 #define STDERR_VERBOSE  0x02
 796
 797 int libzfs_run_process(const char *, char **, int flags);
 798
 799 /*
 800  * Given a device or file, determine if it is part of a pool.
 801  */
 802 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
 803     boolean_t *);
 804
 805 /*
 806  * Label manipulation.
 807  */
 808 extern int zpool_read_label(int, nvlist_t **, int *);
 809 extern int zpool_clear_label(int);
 810
 811 /*
 812  * Management interfaces for SMB ACL files
 813  */
 814
 815 int zfs_smb_acl_add(libzfs_handle_t *, char *, char *, char *);
 816 int zfs_smb_acl_remove(libzfs_handle_t *, char *, char *, char *);
 817 int zfs_smb_acl_purge(libzfs_handle_t *, char *, char *);
 818 int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
 819
 820 /*
 821  * Enable and disable datasets within a pool by mounting/unmounting and
 822  * sharing/unsharing them.
 823  */
 824 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
 825 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
 826
 827 /*
 828  * Mappings between vdev and FRU.
 829  */
 830 extern void libzfs_fru_refresh(libzfs_handle_t *);
 831 extern const char *libzfs_fru_lookup(libzfs_handle_t *, const char *);
 832 extern const char *libzfs_fru_devpath(libzfs_handle_t *, const char *);
 833 extern boolean_t libzfs_fru_compare(libzfs_handle_t *, const char *,
 834     const char *);
 835 extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *);
 836 extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
 837
 838 /*
 839  * Support for Linux libudev derived persistent device strings
 840  */
 841 extern boolean_t is_mpath_whole_disk(const char *);
 842 extern void update_vdev_config_dev_strs(nvlist_t *);
 843 extern char *zfs_strip_partition(char *);
 844 extern char *zfs_strip_partition_path(char *);
 845
 846 #ifdef HAVE_LIBUDEV
 847 struct udev_device;
 848
 849 extern boolean_t udev_is_mpath(struct udev_device *dev);
 850 extern int zfs_device_get_devid(struct udev_device *, char *, size_t);
 851 extern int zfs_device_get_physical(struct udev_device *, char *, size_t);
 852 #endif
 853
 854 #ifdef  __cplusplus
 855 }
 856 #endif
 857
 858 #endif  /* _LIBZFS_H */