[mirror_ubuntu-bionic-kernel.git] / zfs / include / sys / zvol.h

/*
 * 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 (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2016 Actifio, Inc. All rights reserved.
 */

#ifndef	_SYS_ZVOL_H
#define	_SYS_ZVOL_H

#include <sys/zfs_context.h>

#define	ZVOL_OBJ		1ULL
#define	ZVOL_ZAP_OBJ		2ULL

#define	SPEC_MAXOFFSET_T	((1LL << ((NBBY * sizeof (daddr32_t)) + \
				DEV_BSHIFT - 1)) - 1)

extern void zvol_create_minors(spa_t *spa, const char *name, boolean_t async);
extern void zvol_remove_minors(spa_t *spa, const char *name, boolean_t async);
extern void zvol_rename_minors(spa_t *spa, const char *oldname,
    const char *newname, boolean_t async);

#ifdef _KERNEL
typedef struct zvol_state zvol_state_t;

extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
extern int zvol_check_volblocksize(const char *name, uint64_t volblocksize);
extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
extern boolean_t zvol_is_zvol(const char *);
extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
extern int zvol_set_volsize(const char *, uint64_t);
extern int zvol_set_volblocksize(const char *, uint64_t);
extern int zvol_set_snapdev(const char *, zprop_source_t, uint64_t);
extern int zvol_set_volmode(const char *, zprop_source_t, uint64_t);
extern zvol_state_t *zvol_suspend(const char *);
extern int zvol_resume(zvol_state_t *);
extern void *zvol_tag(zvol_state_t *);

extern int zvol_init(void);
extern void zvol_fini(void);
#endif /* _KERNEL */
#endif /* _SYS_ZVOL_H */
Commit	Line	Data
70e083d2 TG	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) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
	24	* Copyright (c) 2016 Actifio, Inc. All rights reserved.
	25	*/
	26
	27	#ifndef _SYS_ZVOL_H
	28	#define _SYS_ZVOL_H
	29
	30	#include <sys/zfs_context.h>
	31
	32	#define ZVOL_OBJ 1ULL
	33	#define ZVOL_ZAP_OBJ 2ULL
	34
86e3c28a CIK	35	#define SPEC_MAXOFFSET_T ((1LL << ((NBBY * sizeof (daddr32_t)) + \
	36	DEV_BSHIFT - 1)) - 1)
	37
70e083d2 TG	38	extern void zvol_create_minors(spa_t spa, const char name, boolean_t async);
	39	extern void zvol_remove_minors(spa_t spa, const char name, boolean_t async);
	40	extern void zvol_rename_minors(spa_t spa, const char oldname,
	41	const char *newname, boolean_t async);
	42
	43	#ifdef _KERNEL
86e3c28a CIK	44	typedef struct zvol_state zvol_state_t;
86e3c28a CIK	45
70e083d2 TG	46	extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
	47	extern int zvol_check_volblocksize(const char *name, uint64_t volblocksize);
	48	extern int zvol_get_stats(objset_t os, nvlist_t nv);
	49	extern boolean_t zvol_is_zvol(const char *);
	50	extern void zvol_create_cb(objset_t os, void arg, cred_t cr, dmu_tx_t tx);
	51	extern int zvol_set_volsize(const char *, uint64_t);
	52	extern int zvol_set_volblocksize(const char *, uint64_t);
	53	extern int zvol_set_snapdev(const char *, zprop_source_t, uint64_t);
86e3c28a CIK	54	extern int zvol_set_volmode(const char *, zprop_source_t, uint64_t);
	55	extern zvol_state_t zvol_suspend(const char );
	56	extern int zvol_resume(zvol_state_t *);
	57	extern void zvol_tag(zvol_state_t );
70e083d2 TG	58
	59	extern int zvol_init(void);
	60	extern void zvol_fini(void);
	61	#endif /* _KERNEL */
	62	#endif /* _SYS_ZVOL_H */