/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _LIBZFS_H #define _LIBZFS_H #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif /* * Miscellaneous ZFS constants */ #define ZFS_MAXNAMELEN MAXNAMELEN #define ZPOOL_MAXNAMELEN MAXNAMELEN #define ZFS_MAXPROPLEN MAXPATHLEN /* * libzfs errors */ enum { EZFS_NOMEM = 2000, /* out of memory */ EZFS_BADPROP, /* invalid property value */ EZFS_PROPREADONLY, /* cannot set readonly property */ EZFS_PROPTYPE, /* property does not apply to dataset type */ EZFS_PROPNONINHERIT, /* property is not inheritable */ EZFS_PROPSPACE, /* bad quota or reservation */ EZFS_BADTYPE, /* dataset is not of appropriate type */ EZFS_BUSY, /* pool or dataset is busy */ EZFS_EXISTS, /* pool or dataset already exists */ EZFS_NOENT, /* no such pool or dataset */ EZFS_BADSTREAM, /* bad backup stream */ EZFS_DSREADONLY, /* dataset is readonly */ EZFS_VOLTOOBIG, /* volume is too large for 32-bit system */ EZFS_VOLHASDATA, /* volume already contains data */ EZFS_INVALIDNAME, /* invalid dataset name */ EZFS_BADRESTORE, /* unable to restore to destination */ EZFS_BADBACKUP, /* backup failed */ EZFS_BADTARGET, /* bad attach/detach/replace target */ EZFS_NODEVICE, /* no such device in pool */ EZFS_BADDEV, /* invalid device to add */ EZFS_NOREPLICAS, /* no valid replicas */ EZFS_RESILVERING, /* currently resilvering */ EZFS_BADVERSION, /* unsupported version */ EZFS_POOLUNAVAIL, /* pool is currently unavailable */ EZFS_DEVOVERFLOW, /* too many devices in one vdev */ EZFS_BADPATH, /* must be an absolute path */ EZFS_CROSSTARGET, /* rename or clone across pool or dataset */ EZFS_ZONED, /* used improperly in local zone */ EZFS_MOUNTFAILED, /* failed to mount dataset */ EZFS_UMOUNTFAILED, /* failed to unmount dataset */ EZFS_UNSHAREFAILED, /* unshare(1M) failed */ EZFS_SHAREFAILED, /* share(1M) failed */ EZFS_DEVLINKS, /* failed to create zvol links */ EZFS_PERM, /* permission denied */ EZFS_NOSPC, /* out of space */ EZFS_IO, /* I/O error */ EZFS_INTR, /* signal received */ EZFS_ISSPARE, /* device is a hot spare */ EZFS_INVALCONFIG, /* invalid vdev configuration */ EZFS_RECURSIVE, /* recursive dependency */ EZFS_UNKNOWN /* unknown error */ }; /* * Basic handle types */ typedef struct zfs_handle zfs_handle_t; typedef struct zpool_handle zpool_handle_t; typedef struct libzfs_handle libzfs_handle_t; /* * Library initialization */ extern libzfs_handle_t *libzfs_init(void); extern void libzfs_fini(libzfs_handle_t *); extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *); extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *); extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t); extern int libzfs_errno(libzfs_handle_t *); extern const char *libzfs_error_action(libzfs_handle_t *); extern const char *libzfs_error_description(libzfs_handle_t *); /* * Basic handle functions */ extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *); extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *); extern void zpool_close(zpool_handle_t *); extern const char *zpool_get_name(zpool_handle_t *); extern uint64_t zpool_get_guid(zpool_handle_t *); extern uint64_t zpool_get_space_used(zpool_handle_t *); extern uint64_t zpool_get_space_total(zpool_handle_t *); extern int zpool_get_root(zpool_handle_t *, char *, size_t); extern int zpool_get_state(zpool_handle_t *); extern uint64_t zpool_get_version(zpool_handle_t *); /* * Iterate over all active pools in the system. */ typedef int (*zpool_iter_f)(zpool_handle_t *, void *); extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *); /* * Functions to create and destroy pools */ extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *, const char *); extern int zpool_destroy(zpool_handle_t *); extern int zpool_add(zpool_handle_t *, nvlist_t *); /* * Functions to manipulate pool and vdev state */ extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t); extern int zpool_vdev_online(zpool_handle_t *, const char *); extern int zpool_vdev_offline(zpool_handle_t *, const char *, int); extern int zpool_vdev_attach(zpool_handle_t *, const char *, const char *, nvlist_t *, int); extern int zpool_vdev_detach(zpool_handle_t *, const char *); extern int zpool_vdev_remove(zpool_handle_t *, const char *); extern int zpool_clear(zpool_handle_t *, const char *); extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *); /* * Pool health statistics. */ typedef enum { /* * The following correspond to faults as defined in the (fault.fs.zfs.*) * event namespace. Each is associated with a corresponding message ID. */ ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */ ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */ ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */ ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */ ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */ ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */ ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */ ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */ ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */ ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */ /* * The following are not faults per se, but still an error possibly * requiring administrative attention. There is no corresponding * message ID. */ ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */ ZPOOL_STATUS_RESILVERING, /* device being resilvered */ ZPOOL_STATUS_OFFLINE_DEV, /* device online */ /* * Finally, the following indicates a healthy pool. */ ZPOOL_STATUS_OK } zpool_status_t; extern zpool_status_t zpool_get_status(zpool_handle_t *, char **); extern zpool_status_t zpool_import_status(nvlist_t *, char **); /* * Statistics and configuration functions. */ extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **); extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *); extern int zpool_get_errlog(zpool_handle_t *, nvlist_t ***, size_t *); /* * Import and export functions */ extern int zpool_export(zpool_handle_t *); extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *, const char *); /* * Search for pools to import */ extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **); /* * Miscellaneous pool functions */ extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *); extern int zpool_upgrade(zpool_handle_t *); /* * Basic handle manipulations. These functions do not create or destroy the * underlying datasets, only the references to them. */ extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int); extern void zfs_close(zfs_handle_t *); extern zfs_type_t zfs_get_type(const zfs_handle_t *); extern const char *zfs_get_name(const zfs_handle_t *); typedef enum { ZFS_SRC_NONE = 0x1, ZFS_SRC_DEFAULT = 0x2, ZFS_SRC_TEMPORARY = 0x4, ZFS_SRC_LOCAL = 0x8, ZFS_SRC_INHERITED = 0x10 } zfs_source_t; #define ZFS_SRC_ALL 0x1f /* * Property management functions. Some functions are shared with the kernel, * and are found in sys/fs/zfs.h. */ extern const char *zfs_prop_to_name(zfs_prop_t); extern int zfs_prop_set(zfs_handle_t *, const char *, const char *); extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t, zfs_source_t *, char *, size_t, boolean_t); extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *, zfs_source_t *, char *, size_t); extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t); extern const char *zfs_prop_get_string(zfs_handle_t *, zfs_prop_t); extern int zfs_prop_inherit(zfs_handle_t *, const char *); extern const char *zfs_prop_values(zfs_prop_t); extern int zfs_prop_valid_for_type(zfs_prop_t, int); extern const char *zfs_prop_default_string(zfs_prop_t prop); extern uint64_t zfs_prop_default_numeric(zfs_prop_t); extern int zfs_prop_is_string(zfs_prop_t prop); extern const char *zfs_prop_column_name(zfs_prop_t); extern boolean_t zfs_prop_align_right(zfs_prop_t); typedef struct zfs_proplist { zfs_prop_t pl_prop; char *pl_user_prop; struct zfs_proplist *pl_next; boolean_t pl_all; size_t pl_width; boolean_t pl_fixed; } zfs_proplist_t; extern int zfs_get_proplist(libzfs_handle_t *, char *, zfs_proplist_t **); extern void zfs_free_proplist(zfs_proplist_t *); extern int zfs_expand_proplist(zfs_handle_t *, zfs_proplist_t **); extern nvlist_t *zfs_get_user_props(zfs_handle_t *); #define ZFS_MOUNTPOINT_NONE "none" #define ZFS_MOUNTPOINT_LEGACY "legacy" /* * Iterator functions. */ typedef int (*zfs_iter_f)(zfs_handle_t *, void *); extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *); extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *); extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *); extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *); extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *); /* * Functions to create and destroy datasets. */ extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t, nvlist_t *); extern int zfs_destroy(zfs_handle_t *); extern int zfs_destroy_snaps(zfs_handle_t *, char *); extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *); extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t); extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, int); extern int zfs_rename(zfs_handle_t *, const char *); extern int zfs_send(zfs_handle_t *, const char *); extern int zfs_receive(libzfs_handle_t *, const char *, int, int, int, boolean_t); extern int zfs_promote(zfs_handle_t *); /* * Miscellaneous functions. */ extern const char *zfs_type_to_name(zfs_type_t); extern void zfs_refresh_properties(zfs_handle_t *); extern int zfs_name_valid(const char *, zfs_type_t); /* * Mount support functions. */ extern boolean_t zfs_is_mounted(zfs_handle_t *, char **); extern int zfs_mount(zfs_handle_t *, const char *, int); extern int zfs_unmount(zfs_handle_t *, const char *, int); extern int zfs_unmountall(zfs_handle_t *, int); /* * Share support functions. */ extern boolean_t zfs_is_shared(zfs_handle_t *, char **); extern int zfs_share(zfs_handle_t *); extern int zfs_unshare(zfs_handle_t *, const char *); extern int zfs_unshareall(zfs_handle_t *); /* * When dealing with nvlists, verify() is extremely useful */ #ifdef NDEBUG #define verify(EX) ((void)(EX)) #else #define verify(EX) assert(EX) #endif /* * Utility function to convert a number to a human-readable form. */ extern void zfs_nicenum(uint64_t, char *, size_t); extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *); /* * Pool destroy special. Remove the device information without destroying * the underlying dataset. */ extern int zfs_remove_link(zfs_handle_t *); /* * Given a device or file, determine if it is part of a pool. */ extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **, boolean_t *); /* * ftyp special. Read the label from a given device. */ extern int zpool_read_label(int, nvlist_t **); /* * Create and remove zvol /dev links */ extern int zpool_create_zvol_links(zpool_handle_t *); extern int zpool_remove_zvol_links(zpool_handle_t *); /* * Mount and unmount datasets within a pool */ extern int zpool_mount_datasets(zpool_handle_t *, const char *, int); extern int zpool_unmount_datasets(zpool_handle_t *, boolean_t); #ifdef __cplusplus } #endif #endif /* _LIBZFS_H */