1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2016 Actifio, Inc. All rights reserved. 26 */ 27 28 #ifndef _SYS_ZVOL_H 29 #define _SYS_ZVOL_H 30 31 #include <sys/zfs_context.h> 32 33 #define ZVOL_OBJ 1ULL 34 #define ZVOL_ZAP_OBJ 2ULL 35 36 #define SPEC_MAXOFFSET_T ((1LL << ((NBBY * sizeof (daddr32_t)) + \ 37 DEV_BSHIFT - 1)) - 1) 38 39 extern void zvol_create_minor(const char *); 40 extern void zvol_create_minors_recursive(const char *); 41 extern void zvol_remove_minors(spa_t *, const char *, boolean_t); 42 extern void zvol_rename_minors(spa_t *, const char *, const char *, boolean_t); 43 44 #ifdef _KERNEL 45 struct zvol_state; 46 typedef struct zvol_state zvol_state_handle_t; 47 48 extern int zvol_check_volsize(uint64_t, uint64_t); 49 extern int zvol_check_volblocksize(const char *, uint64_t); 50 extern int zvol_get_stats(objset_t *, nvlist_t *); 51 extern boolean_t zvol_is_zvol(const char *); 52 extern void zvol_create_cb(objset_t *, void *, cred_t *, dmu_tx_t *); 53 extern int zvol_set_volsize(const char *, uint64_t); 54 extern int zvol_set_volthreading(const char *, boolean_t); 55 extern int zvol_set_common(const char *, zfs_prop_t, zprop_source_t, uint64_t); 56 extern int zvol_set_ro(const char *, boolean_t); 57 extern zvol_state_handle_t *zvol_suspend(const char *); 58 extern int zvol_resume(zvol_state_handle_t *); 59 extern void *zvol_tag(zvol_state_handle_t *); 60 61 extern int zvol_init(void); 62 extern void zvol_fini(void); 63 extern int zvol_busy(void); 64 65 #endif /* _KERNEL */ 66 #endif /* _SYS_ZVOL_H */ 67