libzfs.h revision c25309d42d46e04be84e0dbadaf3c9ab3369ad05
/*
* 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
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBZFS_H
#define _LIBZFS_H
#include <assert.h>
#include <libnvpair.h>
#include <ucred.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Miscellaneous ZFS constants
*/
#define ZFS_MAXNAMELEN MAXNAMELEN
#define ZPOOL_MAXNAMELEN MAXNAMELEN
#define ZFS_MAXPROPLEN MAXPATHLEN
#define ZPOOL_MAXPROPLEN MAXPATHLEN
/*
* libzfs errors
*/
enum {
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_UNSHARENFSFAILED, /* unshare(1M) failed */
EZFS_SHARENFSFAILED, /* 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_NOHISTORY, /* no history object */
EZFS_UNSHAREISCSIFAILED, /* iscsitgtd failed request to unshare */
EZFS_SHAREISCSIFAILED, /* iscsitgtd failed request to share */
EZFS_POOLPROPS, /* couldn't retrieve pool props */
EZFS_POOL_NOTSUP, /* ops not supported for this type of pool */
EZFS_POOL_INVALARG, /* invalid argument for this pool operation */
EZFS_NAMETOOLONG, /* dataset name is too long */
EZFS_OPENFAILED, /* open of device failed */
EZFS_NOCAP, /* couldn't get capacity */
EZFS_LABELFAILED, /* write of label failed */
EZFS_ISCSISVCUNAVAIL, /* iscsi service unavailable */
EZFS_BADWHO, /* invalid permission who */
EZFS_BADPERM, /* invalid permission */
EZFS_BADPERMSET, /* invalid permission set name */
EZFS_NODELEGATION, /* delegated administration is disabled */
EZFS_PERMRDONLY, /* pemissions are readonly */
EZFS_UNSHARESMBFAILED, /* failed to unshare over smb */
EZFS_SHARESMBFAILED, /* failed to share over smb */
EZFS_BADCACHE, /* bad cache file */
EZFS_ISL2CACHE, /* device is for the level 2 ARC */
EZFS_VDEVNOTSUP, /* unsupported vdev type */
EZFS_NOTSUP, /* ops not supported on this dataset */
EZFS_ACTIVE_SPARE, /* pool has active shared spare devices */
EZFS_UNPLAYED_LOGS, /* log device has unplayed logs */
};
/*
* The following data structures are all part
* of the zfs_allow_t data structure which is
* used for printing 'allow' permissions.
* It is a linked list of zfs_allow_t's which
* and each one of the entries in those trees have
* avl tree's for the permissions they belong to and
* whether they are local,descendent or local+descendent
* permissions. The AVL trees are used primarily for
* sorting purposes, but also so that we can quickly find
* a given user and or permission.
*/
typedef struct zfs_perm_node {
char z_pname[MAXPATHLEN];
typedef struct zfs_allow_node {
typedef struct zfs_allow {
char z_setpoint[MAXPATHLEN];
} zfs_allow_t;
/*
* 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 int libzfs_errno(libzfs_handle_t *);
extern const char *libzfs_error_action(libzfs_handle_t *);
extern const char *libzfs_error_description(libzfs_handle_t *);
extern void libzfs_mnttab_init(libzfs_handle_t *);
extern void libzfs_mnttab_fini(libzfs_handle_t *);
extern int libzfs_mnttab_find(libzfs_handle_t *, const char *,
struct mnttab *);
extern void libzfs_mnttab_add(libzfs_handle_t *, const char *,
const char *, const char *);
extern void libzfs_mnttab_remove(libzfs_handle_t *, const char *);
/*
* Basic handle functions
*/
extern void zpool_close(zpool_handle_t *);
extern const char *zpool_get_name(zpool_handle_t *);
extern int zpool_get_state(zpool_handle_t *);
extern void zpool_free_handles(libzfs_handle_t *);
/*
* Iterate over all active pools in the system.
*/
typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
/*
* Functions to create and destroy pools
*/
extern int zpool_destroy(zpool_handle_t *);
/*
* Functions to manipulate pool and vdev state
*/
extern int zpool_clear(zpool_handle_t *, const char *);
extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
vdev_state_t *);
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 *);
/*
* Functions to manage pool properties
*/
extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
zprop_source_t *);
extern const char *zpool_prop_to_name(zpool_prop_t);
extern const char *zpool_prop_values(zpool_prop_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 */
ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */
ZPOOL_STATUS_IO_FAILURE_WAIT, /* failed I/O, failmode 'wait' */
ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
ZPOOL_STATUS_BAD_LOG, /* cannot read log chain(s) */
/*
* These faults have no corresponding message ID. At the time we are
* checking the status, the original reason for the FMA fault (I/O or
* checksum errors) has been lost.
*/
ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */
ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */
/*
* 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 */
ZPOOL_STATUS_REMOVED_DEV, /* removed device */
/*
* Finally, the following indicates a healthy pool.
*/
/*
* Statistics and configuration functions.
*/
/*
* Import and export functions
*/
extern int zpool_export_force(zpool_handle_t *);
char *altroot);
/*
* Search for pools to import
*/
char *, uint64_t);
char *);
uint64_t);
/*
* Miscellaneous pool functions
*/
struct zfs_cmd;
char **argv, char *history_str);
extern int zpool_stage_history(libzfs_handle_t *, const char *);
/*
* Basic handle manipulations. These functions do not create or destroy the
* underlying datasets, only the references to them.
*/
extern void zfs_close(zfs_handle_t *);
extern const char *zfs_get_name(const zfs_handle_t *);
/*
* Property management functions. Some functions are shared with the kernel,
*/
/*
* zfs dataset property management
*/
extern const char *zfs_prop_default_string(zfs_prop_t);
extern const char *zfs_prop_column_name(zfs_prop_t);
extern const char *zfs_prop_to_name(zfs_prop_t);
extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
zprop_source_t *, char *, size_t);
extern int zfs_prop_inherit(zfs_handle_t *, const char *);
extern const char *zfs_prop_values(zfs_prop_t);
typedef struct zprop_list {
int pl_prop;
char *pl_user_prop;
struct zprop_list *pl_next;
} zprop_list_t;
#define ZFS_MOUNTPOINT_NONE "none"
#define ZFS_MOUNTPOINT_LEGACY "legacy"
/*
* zpool property management
*/
extern const char *zpool_prop_default_string(zpool_prop_t);
extern const char *zpool_prop_column_name(zpool_prop_t);
/*
* Functions shared by zfs and zpool property management.
*/
extern void zprop_free_list(zprop_list_t *);
/*
* Functions for printing zfs or zpool properties
*/
typedef struct zprop_get_cbdata {
int cb_sources;
int cb_columns[4];
int cb_colwidths[5];
void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
const char *, const char *, zprop_source_t, const char *);
#define GET_COL_NAME 1
#define GET_COL_PROPERTY 2
#define GET_COL_VALUE 3
#define GET_COL_SOURCE 4
/*
* Iterator functions.
*/
typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
/*
* Functions to create and destroy datasets.
*/
nvlist_t *);
extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
extern int zfs_destroy(zfs_handle_t *);
extern int zfs_destroy_snaps(zfs_handle_t *, char *);
extern int zfs_send(zfs_handle_t *, const char *, const char *,
extern int zfs_promote(zfs_handle_t *);
typedef struct recvflags {
/* print informational messages (ie, -v was specified) */
int verbose : 1;
/* the destination is a prefix, not the exact fs (ie, -d) */
int isprefix : 1;
/* do not actually do the recv, just check if it would work (ie, -n) */
int dryrun : 1;
int force : 1;
/* set "canmount=off" on all modified filesystems */
int canmountoff : 1;
/* byteswap flag is used internally; callers need not specify */
int byteswap : 1;
/* do not mount file systems as they are extracted (private) */
int nomount : 1;
} recvflags_t;
int, avl_tree_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);
extern int zfs_spa_version(zfs_handle_t *, int *);
/*
* Mount support functions.
*/
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 int zfs_share(zfs_handle_t *);
extern int zfs_unshare(zfs_handle_t *);
/*
* Protocol-specific share support functions.
*/
extern int zfs_share_nfs(zfs_handle_t *);
extern int zfs_share_smb(zfs_handle_t *);
extern int zfs_shareall(zfs_handle_t *);
extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
extern int zfs_unshare_smb(zfs_handle_t *, const char *);
extern int zfs_unshareall_nfs(zfs_handle_t *);
extern int zfs_unshareall_smb(zfs_handle_t *);
extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
extern int zfs_unshareall(zfs_handle_t *);
extern int zfs_share_iscsi(zfs_handle_t *);
extern int zfs_unshare_iscsi(zfs_handle_t *);
extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
void *, void *, int, zfs_share_op_t);
/*
* When dealing with nvlists, verify() is extremely useful
*/
#ifdef NDEBUG
#else
#endif
/*
* Utility function to convert a number to a human-readable form.
*/
/*
* Given a device or file, determine if it is part of a pool.
*/
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 *);
/* is this zvol valid for use as a dump device? */
extern int zvol_check_dump_config(char *);
/*
* Management interfaces for SMB ACL files
*/
int zfs_smb_acl_add(libzfs_handle_t *, char *, char *, char *);
int zfs_smb_acl_remove(libzfs_handle_t *, char *, char *, char *);
int zfs_smb_acl_purge(libzfs_handle_t *, char *, char *);
int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
/*
* Enable and disable datasets within a pool by mounting/unmounting and
*/
extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
#ifdef __cplusplus
}
#endif
#endif /* _LIBZFS_H */