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      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 2007 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	"@(#)zvol.h	1.4	07/08/02 SMI"
     31 
     32 #include <sys/zfs_context.h>
     33 
     34 #ifdef	__cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 #ifdef _KERNEL
     39 extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
     40 extern int zvol_check_volblocksize(uint64_t volblocksize);
     41 extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
     42 extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
     43 extern int zvol_create_minor(const char *, major_t);
     44 extern int zvol_remove_minor(const char *);
     45 extern int zvol_set_volsize(const char *, major_t, uint64_t);
     46 extern int zvol_set_volblocksize(const char *, uint64_t);
     47 
     48 extern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr);
     49 extern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr);
     50 extern int zvol_strategy(buf_t *bp);
     51 extern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr);
     52 extern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr);
     53 extern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr);
     54 extern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr);
     55 extern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr,
     56     int *rvalp);
     57 extern int zvol_busy(void);
     58 extern void zvol_init(void);
     59 extern void zvol_fini(void);
     60 #endif
     61 
     62 #ifdef	__cplusplus
     63 }
     64 #endif
     65 
     66 #endif	/* _SYS_ZVOL_H */
     67