libzfs.h revision 94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51
/*
* 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 <assert.h>
#include <libnvpair.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/varargs.h>
#include <sys/fs/zfs.h>
#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_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 *);
#define ZPOOL_ERR_DATASET "dataset"
#define ZPOOL_ERR_OBJECT "object"
#define ZPOOL_ERR_RANGE "range"
/*
* 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.
*/
const char *zfs_prop_to_name(zfs_prop_t);
int zfs_prop_set(zfs_handle_t *, zfs_prop_t, const char *);
int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t, zfs_source_t *,
char *, size_t, boolean_t);
int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *, zfs_source_t *,
char *, size_t);
uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
int zfs_prop_validate(libzfs_handle_t *, zfs_prop_t, const char *, uint64_t *);
int zfs_prop_inheritable(zfs_prop_t);
int zfs_prop_inherit(zfs_handle_t *, zfs_prop_t);
const char *zfs_prop_values(zfs_prop_t);
int zfs_prop_valid_for_type(zfs_prop_t, int);
const char *zfs_prop_default_string(zfs_prop_t prop);
uint64_t zfs_prop_default_numeric(zfs_prop_t);
int zfs_prop_is_string(zfs_prop_t prop);
const char *zfs_prop_column_name(zfs_prop_t);
const char *zfs_prop_column_format(zfs_prop_t);
int zfs_get_proplist(char *fields, zfs_prop_t *proplist, int max, int *count,
char **badopt);
#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 *, 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,
const char *, const char *);
extern int zfs_destroy(zfs_handle_t *);
extern int zfs_clone(zfs_handle_t *, const char *);
extern int zfs_snapshot(libzfs_handle_t *, const char *);
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 *, zfs_handle_t *);
extern int zfs_receive(libzfs_handle_t *, const char *, int, int, int);
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(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 *);
#ifdef __cplusplus
}
#endif
#endif /* _LIBZFS_H */