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 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_ZVOL_H 28 #define _SYS_ZVOL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/zfs_context.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #define ZVOL_OBJ 1ULL 39 #define ZVOL_ZAP_OBJ 2ULL 40 41 #ifdef _KERNEL 42 extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize); 43 extern int zvol_check_volblocksize(uint64_t volblocksize); 44 extern int zvol_get_stats(objset_t *os, nvlist_t *nv); 45 extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 46 extern int zvol_create_minor(const char *, major_t); 47 extern int zvol_remove_minor(const char *); 48 extern int zvol_set_volsize(const char *, major_t, uint64_t); 49 extern int zvol_set_volblocksize(const char *, uint64_t); 50 51 extern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr); 52 extern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks); 53 extern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr); 54 extern int zvol_strategy(buf_t *bp); 55 extern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr); 56 extern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr); 57 extern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr); 58 extern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr); 59 extern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, 60 int *rvalp); 61 extern int zvol_busy(void); 62 extern void zvol_init(void); 63 extern void zvol_fini(void); 64 #endif 65 66 #ifdef __cplusplus 67 } 68 #endif 69 70 #endif /* _SYS_ZVOL_H */ 71