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  * Copyright (c) 2017 Datto Inc.
  30  */
  31
  32 #ifndef _LIBZFS_H
  33 #define _LIBZFS_H
  34
  35 #include <assert.h>
  36 #include <libnvpair.h>
  37 #include <sys/mnttab.h>
  38 #include <sys/param.h>
  39 #include <sys/types.h>
  40 #include <sys/varargs.h>
  41 #include <sys/fs/zfs.h>
  42 #include <sys/avl.h>
  43 #include <ucred.h>
  44 #include <libzfs_core.h>
  45
  46 #ifdef  __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 /*
  51  * Miscellaneous ZFS constants
  52  */
  53 #define ZFS_MAXPROPLEN          MAXPATHLEN
  54 #define ZPOOL_MAXPROPLEN        MAXPATHLEN
  55
  56 /*
  57  * Default device paths
  58  */
  59 #define DISK_ROOT               "/dev"
  60 #define UDISK_ROOT              "/dev/disk"
  61 #define ZVOL_ROOT               "/dev/zvol"
  62
  63 /*
  64  * Default wait time for a device name to be created.
  65  */
  66 #define DISK_LABEL_WAIT         (30 * 1000)  /* 30 seconds */
  67
  68 #define IMPORT_ORDER_PREFERRED_1        1
  69 #define IMPORT_ORDER_PREFERRED_2        2
  70 #define IMPORT_ORDER_SCAN_OFFSET        10
  71 #define IMPORT_ORDER_DEFAULT            100
  72 #define DEFAULT_IMPORT_PATH_SIZE        9
  73 extern char *zpool_default_import_path[DEFAULT_IMPORT_PATH_SIZE];
  74
  75 /*
  76  * libzfs errors
  77  */
  78 typedef enum zfs_error {
  79         EZFS_SUCCESS = 0,       /* no error -- success */
  80         EZFS_NOMEM = 2000,      /* out of memory */
  81         EZFS_BADPROP,           /* invalid property value */
  82         EZFS_PROPREADONLY,      /* cannot set readonly property */
  83         EZFS_PROPTYPE,          /* property does not apply to dataset type */
  84         EZFS_PROPNONINHERIT,    /* property is not inheritable */
  85         EZFS_PROPSPACE,         /* bad quota or reservation */
  86         EZFS_BADTYPE,           /* dataset is not of appropriate type */
  87         EZFS_BUSY,              /* pool or dataset is busy */
  88         EZFS_EXISTS,            /* pool or dataset already exists */
  89         EZFS_NOENT,             /* no such pool or dataset */
  90         EZFS_BADSTREAM,         /* bad backup stream */
  91         EZFS_DSREADONLY,        /* dataset is readonly */
  92         EZFS_VOLTOOBIG,         /* volume is too large for 32-bit system */
  93         EZFS_INVALIDNAME,       /* invalid dataset name */
  94         EZFS_BADRESTORE,        /* unable to restore to destination */
  95         EZFS_BADBACKUP,         /* backup failed */
  96         EZFS_BADTARGET,         /* bad attach/detach/replace target */
  97         EZFS_NODEVICE,          /* no such device in pool */
  98         EZFS_BADDEV,            /* invalid device to add */
  99         EZFS_NOREPLICAS,        /* no valid replicas */
 100         EZFS_RESILVERING,       /* currently resilvering */
 101         EZFS_BADVERSION,        /* unsupported version */
 102         EZFS_POOLUNAVAIL,       /* pool is currently unavailable */
 103         EZFS_DEVOVERFLOW,       /* too many devices in one vdev */
 104         EZFS_BADPATH,           /* must be an absolute path */
 105         EZFS_CROSSTARGET,       /* rename or clone across pool or dataset */
 106         EZFS_ZONED,             /* used improperly in local zone */
 107         EZFS_MOUNTFAILED,       /* failed to mount dataset */
 108         EZFS_UMOUNTFAILED,      /* failed to unmount dataset */
 109         EZFS_UNSHARENFSFAILED,  /* unshare(1M) failed */
 110         EZFS_SHARENFSFAILED,    /* share(1M) failed */
 111         EZFS_PERM,              /* permission denied */
 112         EZFS_NOSPC,             /* out of space */
 113         EZFS_FAULT,             /* bad address */
 114         EZFS_IO,                /* I/O error */
 115         EZFS_INTR,              /* signal received */
 116         EZFS_ISSPARE,           /* device is a hot spare */
 117         EZFS_INVALCONFIG,       /* invalid vdev configuration */
 118         EZFS_RECURSIVE,         /* recursive dependency */
 119         EZFS_NOHISTORY,         /* no history object */
 120         EZFS_POOLPROPS,         /* couldn't retrieve pool props */
 121         EZFS_POOL_NOTSUP,       /* ops not supported for this type of pool */
 122         EZFS_POOL_INVALARG,     /* invalid argument for this pool operation */
 123         EZFS_NAMETOOLONG,       /* dataset name is too long */
 124         EZFS_OPENFAILED,        /* open of device failed */
 125         EZFS_NOCAP,             /* couldn't get capacity */
 126         EZFS_LABELFAILED,       /* write of label failed */
 127         EZFS_BADWHO,            /* invalid permission who */
 128         EZFS_BADPERM,           /* invalid permission */
 129         EZFS_BADPERMSET,        /* invalid permission set name */
 130         EZFS_NODELEGATION,      /* delegated administration is disabled */
 131         EZFS_UNSHARESMBFAILED,  /* failed to unshare over smb */
 132         EZFS_SHARESMBFAILED,    /* failed to share over smb */
 133         EZFS_BADCACHE,          /* bad cache file */
 134         EZFS_ISL2CACHE,         /* device is for the level 2 ARC */
 135         EZFS_VDEVNOTSUP,        /* unsupported vdev type */
 136         EZFS_NOTSUP,            /* ops not supported on this dataset */
 137         EZFS_ACTIVE_SPARE,      /* pool has active shared spare devices */
 138         EZFS_UNPLAYED_LOGS,     /* log device has unplayed logs */
 139         EZFS_REFTAG_RELE,       /* snapshot release: tag not found */
 140         EZFS_REFTAG_HOLD,       /* snapshot hold: tag already exists */
 141         EZFS_TAGTOOLONG,        /* snapshot hold/rele: tag too long */
 142         EZFS_PIPEFAILED,        /* pipe create failed */
 143         EZFS_THREADCREATEFAILED, /* thread create failed */
 144         EZFS_POSTSPLIT_ONLINE,  /* onlining a disk after splitting it */
 145         EZFS_SCRUBBING,         /* currently scrubbing */
 146         EZFS_NO_SCRUB,          /* no active scrub */
 147         EZFS_DIFF,              /* general failure of zfs diff */
 148         EZFS_DIFFDATA,          /* bad zfs diff data */
 149         EZFS_POOLREADONLY,      /* pool is in read-only mode */
 150         EZFS_SCRUB_PAUSED,      /* scrub currently paused */
 151         EZFS_ACTIVE_POOL,       /* pool is imported on a different system */
 152         EZFS_UNKNOWN
 153 } zfs_error_t;
 154
 155 /*
 156  * The following data structures are all part
 157  * of the zfs_allow_t data structure which is
 158  * used for printing 'allow' permissions.
 159  * It is a linked list of zfs_allow_t's which
 160  * then contain avl tree's for user/group/sets/...
 161  * and each one of the entries in those trees have
 162  * avl tree's for the permissions they belong to and
 163  * whether they are local,descendent or local+descendent
 164  * permissions.  The AVL trees are used primarily for
 165  * sorting purposes, but also so that we can quickly find
 166  * a given user and or permission.
 167  */
 168 typedef struct zfs_perm_node {
 169         avl_node_t z_node;
 170         char z_pname[MAXPATHLEN];
 171 } zfs_perm_node_t;
 172
 173 typedef struct zfs_allow_node {
 174         avl_node_t z_node;
 175         char z_key[MAXPATHLEN];         /* name, such as joe */
 176         avl_tree_t z_localdescend;      /* local+descendent perms */
 177         avl_tree_t z_local;             /* local permissions */
 178         avl_tree_t z_descend;           /* descendent permissions */
 179 } zfs_allow_node_t;
 180
 181 typedef struct zfs_allow {
 182         struct zfs_allow *z_next;
 183         char z_setpoint[MAXPATHLEN];
 184         avl_tree_t z_sets;
 185         avl_tree_t z_crperms;
 186         avl_tree_t z_user;
 187         avl_tree_t z_group;
 188         avl_tree_t z_everyone;
 189 } zfs_allow_t;
 190
 191 /*
 192  * Basic handle types
 193  */
 194 typedef struct zfs_handle zfs_handle_t;
 195 typedef struct zpool_handle zpool_handle_t;
 196 typedef struct libzfs_handle libzfs_handle_t;
 197
 198 /*
 199  * Library initialization
 200  */
 201 extern libzfs_handle_t *libzfs_init(void);
 202 extern void libzfs_fini(libzfs_handle_t *);
 203
 204 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *);
 205 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *);
 206
 207 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t);
 208
 209 extern void zfs_save_arguments(int argc, char **, char *, int);
 210 extern int zpool_log_history(libzfs_handle_t *, const char *);
 211
 212 extern int libzfs_errno(libzfs_handle_t *);
 213 extern const char *libzfs_error_init(int);
 214 extern const char *libzfs_error_action(libzfs_handle_t *);
 215 extern const char *libzfs_error_description(libzfs_handle_t *);
 216 extern int zfs_standard_error(libzfs_handle_t *, int, const char *);
 217 extern void libzfs_mnttab_init(libzfs_handle_t *);
 218 extern void libzfs_mnttab_fini(libzfs_handle_t *);
 219 extern void libzfs_mnttab_cache(libzfs_handle_t *, boolean_t);
 220 extern int libzfs_mnttab_find(libzfs_handle_t *, const char *,
 221     struct mnttab *);
 222 extern void libzfs_mnttab_add(libzfs_handle_t *, const char *,
 223     const char *, const char *);
 224 extern void libzfs_mnttab_remove(libzfs_handle_t *, const char *);
 225
 226 /*
 227  * Basic handle functions
 228  */
 229 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *);
 230 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *);
 231 extern void zpool_close(zpool_handle_t *);
 232 extern const char *zpool_get_name(zpool_handle_t *);
 233 extern int zpool_get_state(zpool_handle_t *);
 234 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t);
 235 extern const char *zpool_pool_state_to_name(pool_state_t);
 236 extern void zpool_free_handles(libzfs_handle_t *);
 237
 238 /*
 239  * Iterate over all active pools in the system.
 240  */
 241 typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
 242 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *);
 243 extern boolean_t zpool_skip_pool(const char *);
 244
 245 /*
 246  * Functions to create and destroy pools
 247  */
 248 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
 249     nvlist_t *, nvlist_t *);
 250 extern int zpool_destroy(zpool_handle_t *, const char *);
 251 extern int zpool_add(zpool_handle_t *, nvlist_t *);
 252
 253 typedef struct splitflags {
 254         /* do not split, but return the config that would be split off */
 255         int dryrun : 1;
 256
 257         /* after splitting, import the pool */
 258         int import : 1;
 259         int name_flags;
 260 } splitflags_t;
 261
 262 /*
 263  * Functions to manipulate pool and vdev state
 264  */
 265 extern int zpool_scan(zpool_handle_t *, pool_scan_func_t, pool_scrub_cmd_t);
 266 extern int zpool_clear(zpool_handle_t *, const char *, nvlist_t *);
 267 extern int zpool_reguid(zpool_handle_t *);
 268 extern int zpool_reopen(zpool_handle_t *);
 269
 270 extern int zpool_sync_one(zpool_handle_t *, void *);
 271
 272 extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
 273     vdev_state_t *);
 274 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t);
 275 extern int zpool_vdev_attach(zpool_handle_t *, const char *,
 276     const char *, nvlist_t *, int);
 277 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
 278 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
 279 extern int zpool_vdev_split(zpool_handle_t *, char *, nvlist_t **, nvlist_t *,
 280     splitflags_t);
 281
 282 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t, vdev_aux_t);
 283 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t, vdev_aux_t);
 284 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t);
 285
 286 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *,
 287     boolean_t *, boolean_t *);
 288 extern nvlist_t *zpool_find_vdev_by_physpath(zpool_handle_t *, const char *,
 289     boolean_t *, boolean_t *, boolean_t *);
 290 extern int zpool_label_disk_wait(char *, int);
 291 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *);
 292 extern uint64_t zpool_vdev_path_to_guid(zpool_handle_t *zhp, const char *path);
 293
 294 int zfs_dev_is_dm(char *dev_name);
 295 int zfs_dev_is_whole_disk(char *dev_name);
 296 char *zfs_get_underlying_path(char *dev_name);
 297 char *zfs_get_enclosure_sysfs_path(char *dev_name);
 298
 299 const char *zpool_get_state_str(zpool_handle_t *);
 300
 301 /*
 302  * Functions to manage pool properties
 303  */
 304 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
 305 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *,
 306     size_t proplen, zprop_source_t *, boolean_t literal);
 307 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t,
 308     zprop_source_t *);
 309
 310 extern const char *zpool_prop_to_name(zpool_prop_t);
 311 extern const char *zpool_prop_values(zpool_prop_t);
 312
 313 /*
 314  * Pool health statistics.
 315  */
 316 typedef enum {
 317         /*
 318          * The following correspond to faults as defined in the (fault.fs.zfs.*)
 319          * event namespace.  Each is associated with a corresponding message ID.
 320          */
 321         ZPOOL_STATUS_CORRUPT_CACHE,     /* corrupt /kernel/drv/zpool.cache */
 322         ZPOOL_STATUS_MISSING_DEV_R,     /* missing device with replicas */
 323         ZPOOL_STATUS_MISSING_DEV_NR,    /* missing device with no replicas */
 324         ZPOOL_STATUS_CORRUPT_LABEL_R,   /* bad device label with replicas */
 325         ZPOOL_STATUS_CORRUPT_LABEL_NR,  /* bad device label with no replicas */
 326         ZPOOL_STATUS_BAD_GUID_SUM,      /* sum of device guids didn't match */
 327         ZPOOL_STATUS_CORRUPT_POOL,      /* pool metadata is corrupted */
 328         ZPOOL_STATUS_CORRUPT_DATA,      /* data errors in user (meta)data */
 329         ZPOOL_STATUS_FAILING_DEV,       /* device experiencing errors */
 330         ZPOOL_STATUS_VERSION_NEWER,     /* newer on-disk version */
 331         ZPOOL_STATUS_HOSTID_MISMATCH,   /* last accessed by another system */
 332         ZPOOL_STATUS_HOSTID_ACTIVE,     /* currently active on another system */
 333         ZPOOL_STATUS_HOSTID_REQUIRED,   /* multihost=on and hostid=0 */
 334         ZPOOL_STATUS_IO_FAILURE_WAIT,   /* failed I/O, failmode 'wait' */
 335         ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
 336         ZPOOL_STATUS_IO_FAILURE_MMP,    /* failed MMP, failmode not 'panic' */
 337         ZPOOL_STATUS_BAD_LOG,           /* cannot read log chain(s) */
 338         ZPOOL_STATUS_ERRATA,            /* informational errata available */
 339
 340         /*
 341          * If the pool has unsupported features but can still be opened in
 342          * read-only mode, its status is ZPOOL_STATUS_UNSUP_FEAT_WRITE. If the
 343          * pool has unsupported features but cannot be opened at all, its
 344          * status is ZPOOL_STATUS_UNSUP_FEAT_READ.
 345          */
 346         ZPOOL_STATUS_UNSUP_FEAT_READ,   /* unsupported features for read */
 347         ZPOOL_STATUS_UNSUP_FEAT_WRITE,  /* unsupported features for write */
 348
 349         /*
 350          * These faults have no corresponding message ID.  At the time we are
 351          * checking the status, the original reason for the FMA fault (I/O or
 352          * checksum errors) has been lost.
 353          */
 354         ZPOOL_STATUS_FAULTED_DEV_R,     /* faulted device with replicas */
 355         ZPOOL_STATUS_FAULTED_DEV_NR,    /* faulted device with no replicas */
 356
 357         /*
 358          * The following are not faults per se, but still an error possibly
 359          * requiring administrative attention.  There is no corresponding
 360          * message ID.
 361          */
 362         ZPOOL_STATUS_VERSION_OLDER,     /* older legacy on-disk version */
 363         ZPOOL_STATUS_FEAT_DISABLED,     /* supported features are disabled */
 364         ZPOOL_STATUS_RESILVERING,       /* device being resilvered */
 365         ZPOOL_STATUS_OFFLINE_DEV,       /* device offline */
 366         ZPOOL_STATUS_REMOVED_DEV,       /* removed device */
 367
 368         /*
 369          * Finally, the following indicates a healthy pool.
 370          */
 371         ZPOOL_STATUS_OK
 372 } zpool_status_t;
 373
 374 extern unsigned long get_system_hostid(void);
 375 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **,
 376     zpool_errata_t *);
 377 extern zpool_status_t zpool_import_status(nvlist_t *, char **,
 378     zpool_errata_t *);
 379 extern void zpool_dump_ddt(const ddt_stat_t *dds, const ddt_histogram_t *ddh);
 380
 381 /*
 382  * Statistics and configuration functions.
 383  */
 384 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
 385 extern nvlist_t *zpool_get_features(zpool_handle_t *);
 386 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
 387 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
 388
 389 /*
 390  * Import and export functions
 391  */
 392 extern int zpool_export(zpool_handle_t *, boolean_t, const char *);
 393 extern int zpool_export_force(zpool_handle_t *, const char *);
 394 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
 395     char *altroot);
 396 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
 397     nvlist_t *, int);
 398 extern void zpool_print_unsup_feat(nvlist_t *config);
 399
 400 /*
 401  * Search for pools to import
 402  */
 403
 404 typedef struct importargs {
 405         char **path;            /* a list of paths to search            */
 406         int paths;              /* number of paths to search            */
 407         char *poolname;         /* name of a pool to find               */
 408         uint64_t guid;          /* guid of a pool to find               */
 409         char *cachefile;        /* cachefile to use for import          */
 410         int can_be_active : 1;  /* can the pool be active?              */
 411         int unique : 1;         /* does 'poolname' already exist?       */
 412         int exists : 1;         /* set on return if pool already exists */
 413         int scan : 1;           /* prefer scanning to libblkid cache    */
 414 } importargs_t;
 415
 416 extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *);
 417 extern int zpool_tryimport(libzfs_handle_t *hdl, char *target,
 418     nvlist_t **configp, importargs_t *args);
 419
 420 /* legacy pool search routines */
 421 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
 422 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
 423     char *, uint64_t);
 424
 425 /*
 426  * Miscellaneous pool functions
 427  */
 428 struct zfs_cmd;
 429
 430 extern const char *zfs_history_event_names[];
 431
 432 typedef enum {
 433         VDEV_NAME_PATH          = 1 << 0,
 434         VDEV_NAME_GUID          = 1 << 1,
 435         VDEV_NAME_FOLLOW_LINKS  = 1 << 2,
 436         VDEV_NAME_TYPE_ID       = 1 << 3,
 437 } vdev_name_t;
 438
 439 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *,
 440     int name_flags);
 441 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
 442 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
 443 extern int zpool_history_unpack(char *, uint64_t, uint64_t *,
 444     nvlist_t ***, uint_t *);
 445 extern int zpool_events_next(libzfs_handle_t *, nvlist_t **, int *, unsigned,
 446     int);
 447 extern int zpool_events_clear(libzfs_handle_t *, int *);
 448 extern int zpool_events_seek(libzfs_handle_t *, uint64_t, int);
 449 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
 450     size_t len);
 451 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
 452 extern int zpool_get_physpath(zpool_handle_t *, char *, size_t);
 453 extern void zpool_explain_recover(libzfs_handle_t *, const char *, int,
 454     nvlist_t *);
 455
 456 /*
 457  * Basic handle manipulations.  These functions do not create or destroy the
 458  * underlying datasets, only the references to them.
 459  */
 460 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
 461 extern zfs_handle_t *zfs_handle_dup(zfs_handle_t *);
 462 extern void zfs_close(zfs_handle_t *);
 463 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
 464 extern const char *zfs_get_name(const zfs_handle_t *);
 465 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
 466 extern const char *zfs_get_pool_name(const zfs_handle_t *);
 467
 468 /*
 469  * Property management functions.  Some functions are shared with the kernel,
 470  * and are found in sys/fs/zfs.h.
 471  */
 472
 473 /*
 474  * zfs dataset property management
 475  */
 476 extern const char *zfs_prop_default_string(zfs_prop_t);
 477 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
 478 extern const char *zfs_prop_column_name(zfs_prop_t);
 479 extern boolean_t zfs_prop_align_right(zfs_prop_t);
 480
 481 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
 482     nvlist_t *, uint64_t, zfs_handle_t *, zpool_handle_t *, const char *);
 483
 484 extern const char *zfs_prop_to_name(zfs_prop_t);
 485 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
 486 extern int zfs_prop_set_list(zfs_handle_t *, nvlist_t *);
 487 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
 488     zprop_source_t *, char *, size_t, boolean_t);
 489 extern int zfs_prop_get_recvd(zfs_handle_t *, const char *, char *, size_t,
 490     boolean_t);
 491 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
 492     zprop_source_t *, char *, size_t);
 493 extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
 494     uint64_t *propvalue);
 495 extern int zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
 496     char *propbuf, int proplen, boolean_t literal);
 497 extern int zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
 498     uint64_t *propvalue);
 499 extern int zfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
 500     char *propbuf, int proplen, boolean_t literal);
 501 extern int zfs_prop_get_feature(zfs_handle_t *zhp, const char *propname,
 502     char *buf, size_t len);
 503 extern uint64_t getprop_uint64(zfs_handle_t *, zfs_prop_t, char **);
 504 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
 505 extern int zfs_prop_inherit(zfs_handle_t *, const char *, boolean_t);
 506 extern const char *zfs_prop_values(zfs_prop_t);
 507 extern int zfs_prop_is_string(zfs_prop_t prop);
 508 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
 509 extern nvlist_t *zfs_get_recvd_props(zfs_handle_t *);
 510 extern nvlist_t *zfs_get_clones_nvl(zfs_handle_t *);
 511
 512 typedef struct zprop_list {
 513         int             pl_prop;
 514         char            *pl_user_prop;
 515         struct zprop_list *pl_next;
 516         boolean_t       pl_all;
 517         size_t          pl_width;
 518         size_t          pl_recvd_width;
 519         boolean_t       pl_fixed;
 520 } zprop_list_t;
 521
 522 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **, boolean_t,
 523     boolean_t);
 524 extern void zfs_prune_proplist(zfs_handle_t *, uint8_t *);
 525
 526 #define ZFS_MOUNTPOINT_NONE     "none"
 527 #define ZFS_MOUNTPOINT_LEGACY   "legacy"
 528
 529 #define ZFS_FEATURE_DISABLED    "disabled"
 530 #define ZFS_FEATURE_ENABLED     "enabled"
 531 #define ZFS_FEATURE_ACTIVE      "active"
 532
 533 #define ZFS_UNSUPPORTED_INACTIVE        "inactive"
 534 #define ZFS_UNSUPPORTED_READONLY        "readonly"
 535
 536 /*
 537  * zpool property management
 538  */
 539 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
 540 extern int zpool_prop_get_feature(zpool_handle_t *, const char *, char *,
 541     size_t);
 542 extern const char *zpool_prop_default_string(zpool_prop_t);
 543 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
 544 extern const char *zpool_prop_column_name(zpool_prop_t);
 545 extern boolean_t zpool_prop_align_right(zpool_prop_t);
 546
 547 /*
 548  * Functions shared by zfs and zpool property management.
 549  */
 550 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
 551     boolean_t ordered, zfs_type_t type);
 552 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
 553     zfs_type_t);
 554 extern void zprop_free_list(zprop_list_t *);
 555
 556 #define ZFS_GET_NCOLS   5
 557
 558 typedef enum {
 559         GET_COL_NONE,
 560         GET_COL_NAME,
 561         GET_COL_PROPERTY,
 562         GET_COL_VALUE,
 563         GET_COL_RECVD,
 564         GET_COL_SOURCE
 565 } zfs_get_column_t;
 566
 567 /*
 568  * Functions for printing zfs or zpool properties
 569  */
 570 typedef struct zprop_get_cbdata {
 571         int cb_sources;
 572         zfs_get_column_t cb_columns[ZFS_GET_NCOLS];
 573         int cb_colwidths[ZFS_GET_NCOLS + 1];
 574         boolean_t cb_scripted;
 575         boolean_t cb_literal;
 576         boolean_t cb_first;
 577         zprop_list_t *cb_proplist;
 578         zfs_type_t cb_type;
 579 } zprop_get_cbdata_t;
 580
 581 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
 582     const char *, const char *, zprop_source_t, const char *,
 583     const char *);
 584
 585 /*
 586  * Iterator functions.
 587  */
 588 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
 589 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
 590 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
 591 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 592 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
 593 extern int zfs_iter_snapshots(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 594 extern int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *);
 595 extern int zfs_iter_snapspec(zfs_handle_t *, const char *, zfs_iter_f, void *);
 596 extern int zfs_iter_bookmarks(zfs_handle_t *, zfs_iter_f, void *);
 597
 598 typedef struct get_all_cb {
 599         zfs_handle_t    **cb_handles;
 600         size_t          cb_alloc;
 601         size_t          cb_used;
 602         boolean_t       cb_verbose;
 603         int             (*cb_getone)(zfs_handle_t *, void *);
 604 } get_all_cb_t;
 605
 606 void libzfs_add_handle(get_all_cb_t *, zfs_handle_t *);
 607 int libzfs_dataset_cmp(const void *, const void *);
 608
 609 /*
 610  * Functions to create and destroy datasets.
 611  */
 612 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
 613     nvlist_t *);
 614 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
 615 extern int zfs_destroy(zfs_handle_t *, boolean_t);
 616 extern int zfs_destroy_snaps(zfs_handle_t *, char *, boolean_t);
 617 extern int zfs_destroy_snaps_nvl(libzfs_handle_t *, nvlist_t *, boolean_t);
 618 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
 619 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
 620 extern int zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps,
 621     nvlist_t *props);
 622 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
 623 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t, boolean_t);
 624
 625 typedef struct sendflags {
 626         /* print informational messages (ie, -v was specified) */
 627         boolean_t verbose;
 628
 629         /* recursive send  (ie, -R) */
 630         boolean_t replicate;
 631
 632         /* for incrementals, do all intermediate snapshots */
 633         boolean_t doall;
 634
 635         /* if dataset is a clone, do incremental from its origin */
 636         boolean_t fromorigin;
 637
 638         /* do deduplication */
 639         boolean_t dedup;
 640
 641         /* send properties (ie, -p) */
 642         boolean_t props;
 643
 644         /* do not send (no-op, ie. -n) */
 645         boolean_t dryrun;
 646
 647         /* parsable verbose output (ie. -P) */
 648         boolean_t parsable;
 649
 650         /* show progress (ie. -v) */
 651         boolean_t progress;
 652
 653         /* large blocks (>128K) are permitted */
 654         boolean_t largeblock;
 655
 656         /* WRITE_EMBEDDED records of type DATA are permitted */
 657         boolean_t embed_data;
 658
 659         /* compressed WRITE records are permitted */
 660         boolean_t compress;
 661 } sendflags_t;
 662
 663 typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
 664
 665 extern int zfs_send(zfs_handle_t *, const char *, const char *,
 666     sendflags_t *, int, snapfilter_cb_t, void *, nvlist_t **);
 667 extern int zfs_send_one(zfs_handle_t *, const char *, int, enum lzc_send_flags);
 668 extern int zfs_send_resume(libzfs_handle_t *, sendflags_t *, int outfd,
 669     const char *);
 670 extern nvlist_t *zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl,
 671     const char *token);
 672
 673 extern int zfs_promote(zfs_handle_t *);
 674 extern int zfs_hold(zfs_handle_t *, const char *, const char *,
 675     boolean_t, int);
 676 extern int zfs_hold_nvl(zfs_handle_t *, int, nvlist_t *);
 677 extern int zfs_release(zfs_handle_t *, const char *, const char *, boolean_t);
 678 extern int zfs_get_holds(zfs_handle_t *, nvlist_t **);
 679 extern uint64_t zvol_volsize_to_reservation(uint64_t, nvlist_t *);
 680
 681 typedef int (*zfs_userspace_cb_t)(void *arg, const char *domain,
 682     uid_t rid, uint64_t space);
 683
 684 extern int zfs_userspace(zfs_handle_t *, zfs_userquota_prop_t,
 685     zfs_userspace_cb_t, void *);
 686
 687 extern int zfs_get_fsacl(zfs_handle_t *, nvlist_t **);
 688 extern int zfs_set_fsacl(zfs_handle_t *, boolean_t, nvlist_t *);
 689
 690 typedef struct recvflags {
 691         /* print informational messages (ie, -v was specified) */
 692         boolean_t verbose;
 693
 694         /* the destination is a prefix, not the exact fs (ie, -d) */
 695         boolean_t isprefix;
 696
 697         /*
 698          * Only the tail of the sent snapshot path is appended to the
 699          * destination to determine the received snapshot name (ie, -e).
 700          */
 701         boolean_t istail;
 702
 703         /* do not actually do the recv, just check if it would work (ie, -n) */
 704         boolean_t dryrun;
 705
 706         /* rollback/destroy filesystems as necessary (eg, -F) */
 707         boolean_t force;
 708
 709         /* set "canmount=off" on all modified filesystems */
 710         boolean_t canmountoff;
 711
 712         /*
 713          * Mark the file systems as "resumable" and do not destroy them if the
 714          * receive is interrupted
 715          */
 716         boolean_t resumable;
 717
 718         /* byteswap flag is used internally; callers need not specify */
 719         boolean_t byteswap;
 720
 721         /* do not mount file systems as they are extracted (private) */
 722         boolean_t nomount;
 723 } recvflags_t;
 724
 725 extern int zfs_receive(libzfs_handle_t *, const char *, nvlist_t *,
 726     recvflags_t *, int, avl_tree_t *);
 727
 728 typedef enum diff_flags {
 729         ZFS_DIFF_PARSEABLE = 0x1,
 730         ZFS_DIFF_TIMESTAMP = 0x2,
 731         ZFS_DIFF_CLASSIFY = 0x4
 732 } diff_flags_t;
 733
 734 extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
 735     int);
 736
 737 /*
 738  * Miscellaneous functions.
 739  */
 740 extern const char *zfs_type_to_name(zfs_type_t);
 741 extern void zfs_refresh_properties(zfs_handle_t *);
 742 extern int zfs_name_valid(const char *, zfs_type_t);
 743 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
 744 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
 745     zfs_type_t);
 746 extern int zfs_spa_version(zfs_handle_t *, int *);
 747 extern boolean_t zfs_bookmark_exists(const char *path);
 748 extern int zfs_append_partition(char *path, size_t max_len);
 749 extern int zfs_resolve_shortname(const char *name, char *path, size_t pathlen);
 750 extern int zfs_strcmp_pathname(char *name, char *cmp_name, int wholedisk);
 751 extern int zfs_path_order(char *path, int *order);
 752
 753 /*
 754  * Mount support functions.
 755  */
 756 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
 757 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
 758 extern int zfs_mount(zfs_handle_t *, const char *, int);
 759 extern int zfs_unmount(zfs_handle_t *, const char *, int);
 760 extern int zfs_unmountall(zfs_handle_t *, int);
 761
 762 /*
 763  * Share support functions.
 764  */
 765 extern boolean_t zfs_is_shared(zfs_handle_t *);
 766 extern int zfs_share(zfs_handle_t *);
 767 extern int zfs_unshare(zfs_handle_t *);
 768
 769 /*
 770  * Protocol-specific share support functions.
 771  */
 772 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
 773 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
 774 extern int zfs_share_nfs(zfs_handle_t *);
 775 extern int zfs_share_smb(zfs_handle_t *);
 776 extern int zfs_shareall(zfs_handle_t *);
 777 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
 778 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
 779 extern int zfs_unshareall_nfs(zfs_handle_t *);
 780 extern int zfs_unshareall_smb(zfs_handle_t *);
 781 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
 782 extern int zfs_unshareall_bytype(zfs_handle_t *, const char *, const char *);
 783 extern int zfs_unshareall(zfs_handle_t *);
 784 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
 785     void *, void *, int, zfs_share_op_t);
 786
 787 /*
 788  * Formats for iostat numbers.  Examples: "12K", "30ms", "4B", "2321234", "-".
 789  *
 790  * ZFS_NICENUM_1024:    Print kilo, mega, tera, peta, exa..
 791  * ZFS_NICENUM_BYTES:   Print single bytes ("13B"), kilo, mega, tera...
 792  * ZFS_NICENUM_TIME:    Print nanosecs, microsecs, millisecs, seconds...
 793  * ZFS_NICENUM_RAW:     Print the raw number without any formatting
 794  * ZFS_NICENUM_RAWTIME: Same as RAW, but print dashes ('-') for zero.
 795  */
 796 enum zfs_nicenum_format {
 797         ZFS_NICENUM_1024 = 0,
 798         ZFS_NICENUM_BYTES = 1,
 799         ZFS_NICENUM_TIME = 2,
 800         ZFS_NICENUM_RAW = 3,
 801         ZFS_NICENUM_RAWTIME = 4
 802 };
 803
 804 /*
 805  * Utility function to convert a number to a human-readable form.
 806  */
 807 extern void zfs_nicenum(uint64_t, char *, size_t);
 808 extern void zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
 809     enum zfs_nicenum_format type);
 810
 811
 812 extern void zfs_nicetime(uint64_t, char *, size_t);
 813 extern void zfs_nicebytes(uint64_t, char *, size_t);
 814 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
 815
 816 /*
 817  * Utility functions to run an external process.
 818  */
 819 #define STDOUT_VERBOSE  0x01
 820 #define STDERR_VERBOSE  0x02
 821 #define NO_DEFAULT_PATH 0x04 /* Don't use $PATH to lookup the command */
 822
 823 int libzfs_run_process(const char *, char **, int flags);
 824 int libzfs_run_process_get_stdout(const char *path, char *argv[], char *env[],
 825     char **lines[], int *lines_cnt);
 826 int libzfs_run_process_get_stdout_nopath(const char *path, char *argv[],
 827     char *env[], char **lines[], int *lines_cnt);
 828
 829 void libzfs_free_str_array(char **strs, int count);
 830
 831 int libzfs_envvar_is_set(char *envvar);
 832
 833 /*
 834  * Given a device or file, determine if it is part of a pool.
 835  */
 836 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
 837     boolean_t *);
 838
 839 /*
 840  * Label manipulation.
 841  */
 842 extern int zpool_read_label(int, nvlist_t **, int *);
 843 extern int zpool_clear_label(int);
 844
 845 /*
 846  * Management interfaces for SMB ACL files
 847  */
 848
 849 int zfs_smb_acl_add(libzfs_handle_t *, char *, char *, char *);
 850 int zfs_smb_acl_remove(libzfs_handle_t *, char *, char *, char *);
 851 int zfs_smb_acl_purge(libzfs_handle_t *, char *, char *);
 852 int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
 853
 854 /*
 855  * Enable and disable datasets within a pool by mounting/unmounting and
 856  * sharing/unsharing them.
 857  */
 858 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
 859 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
 860
 861 /*
 862  * Mappings between vdev and FRU.
 863  */
 864 extern void libzfs_fru_refresh(libzfs_handle_t *);
 865 extern const char *libzfs_fru_lookup(libzfs_handle_t *, const char *);
 866 extern const char *libzfs_fru_devpath(libzfs_handle_t *, const char *);
 867 extern boolean_t libzfs_fru_compare(libzfs_handle_t *, const char *,
 868     const char *);
 869 extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *);
 870 extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
 871
 872 /*
 873  * Support for Linux libudev derived persistent device strings
 874  */
 875 extern boolean_t is_mpath_whole_disk(const char *);
 876 extern void update_vdev_config_dev_strs(nvlist_t *);
 877 extern char *zfs_strip_partition(char *);
 878 extern char *zfs_strip_partition_path(char *);
 879
 880 #ifdef HAVE_LIBUDEV
 881 struct udev_device;
 882
 883 extern boolean_t udev_is_mpath(struct udev_device *dev);
 884 extern int zfs_device_get_devid(struct udev_device *, char *, size_t);
 885 extern int zfs_device_get_physical(struct udev_device *, char *, size_t);
 886 #endif
 887
 888 #ifdef  __cplusplus
 889 }
 890 #endif
 891
 892 #endif  /* _LIBZFS_H */