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 https://opensource.org/licenses/CDDL-1.0. 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 35 #define SPEC_MAXOFFSET_T ((1LL << ((NBBY * sizeof (daddr32_t)) + \ 36 DEV_BSHIFT - 1)) - 1) 37 38 extern void zvol_create_minor(const char *); 39 extern void zvol_create_minors_recursive(const char *); 40 extern void zvol_remove_minors(spa_t *, const char *, boolean_t); 41 extern void zvol_rename_minors(spa_t *, const char *, const char *, boolean_t); 42 43 #ifdef _KERNEL 44 struct zvol_state; 45 typedef struct zvol_state zvol_state_handle_t; 46 47 extern int zvol_check_volsize(uint64_t, uint64_t); 48 extern int zvol_check_volblocksize(const char *, uint64_t); 49 extern int zvol_get_stats(objset_t *, nvlist_t *); 50 extern boolean_t zvol_is_zvol(const char *); 51 extern void zvol_create_cb(objset_t *, void *, cred_t *, dmu_tx_t *); 52 extern int zvol_set_volsize(const char *, uint64_t); 53 extern int zvol_set_volthreading(const char *, boolean_t); 54 extern int zvol_set_common(const char *, zfs_prop_t, zprop_source_t, uint64_t); 55 extern int zvol_set_ro(const char *, boolean_t); 56 extern zvol_state_handle_t *zvol_suspend(const char *); 57 extern int zvol_resume(zvol_state_handle_t *); 58 extern void *zvol_tag(zvol_state_handle_t *); 59 60 extern int zvol_init(void); 61 extern void zvol_fini(void); 62 extern int zvol_busy(void); 63 64 #endif /* _KERNEL */ 65 #endif /* _SYS_ZVOL_H */ 66