zvol.h revision 277483
1295367Sdes/* 257429Smarkm * CDDL HEADER START 357429Smarkm * 457429Smarkm * The contents of this file are subject to the terms of the 557429Smarkm * Common Development and Distribution License (the "License"). 665674Skris * You may not use this file except in compliance with the License. 760576Skris * 865674Skris * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 965674Skris * or http://www.opensolaris.org/os/licensing. 1065674Skris * See the License for the specific language governing permissions 1165674Skris * and limitations under the License. 1265674Skris * 1360576Skris * When distributing Covered Code, include this CDDL HEADER in each 1460576Skris * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 1592559Sdes * If applicable, add the following below this CDDL HEADER, with the 1665674Skris * fields enclosed by brackets "[]" replaced with your own identifying 1765674Skris * information: Portions Copyright [yyyy] [name of copyright owner] 1865674Skris * 1965674Skris * CDDL HEADER END 2065674Skris */ 2165674Skris 2265674Skris/* 2365674Skris * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 2465674Skris */ 2565674Skris 2665674Skris#ifndef _SYS_ZVOL_H 2765674Skris#define _SYS_ZVOL_H 2865674Skris 2965674Skris#include <sys/zfs_context.h> 3065674Skris 3165674Skris#ifdef __cplusplus 3265674Skrisextern "C" { 3365674Skris#endif 3465674Skris 3565674Skris#define ZVOL_OBJ 1ULL 3665674Skris#define ZVOL_ZAP_OBJ 2ULL 3757429Smarkm 3857429Smarkm#ifdef _KERNEL 3957429Smarkmextern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize); 4057429Smarkmextern int zvol_check_volblocksize(uint64_t volblocksize); 41162856Sdesextern int zvol_get_stats(objset_t *os, nvlist_t *nv); 42295367Sdesextern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 43162856Sdesextern int zvol_create_minor(const char *); 44162856Sdesextern int zvol_remove_minor(const char *); 45162856Sdesextern void zvol_remove_minors(const char *); 46295367Sdesextern int zvol_set_volsize(const char *, uint64_t); 47162856Sdes 48162856Sdes#ifdef sun 49162856Sdesextern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr); 50162856Sdesextern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks); 51162856Sdesextern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr); 52295367Sdesextern int zvol_strategy(buf_t *bp); 53295367Sdesextern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr); 54162856Sdesextern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr); 55162856Sdesextern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr); 5658582Skrisextern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr); 57295367Sdes#endif /* sun */ 5858582Skrisextern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, 5976262Sgreen int *rvalp); 60221420Sdesextern int zvol_busy(void); 61295367Sdesextern void zvol_init(void); 62262566Sdesextern void zvol_fini(void); 63264377Sdes 6457429Smarkm#ifdef sun 65221420Sdesextern int zvol_get_volume_params(minor_t minor, uint64_t *blksize, 66221420Sdes uint64_t *max_xfer_len, void **minor_hdl, void **objset_hdl, void **zil_hdl, 67221420Sdes void **rl_hdl, void **bonus_hdl); 68221420Sdesextern uint64_t zvol_get_volume_size(void *minor_hdl); 69221420Sdesextern int zvol_get_volume_wce(void *minor_hdl); 70295367Sdesextern void zvol_log_write_minor(void *minor_hdl, dmu_tx_t *tx, offset_t off, 71295367Sdes ssize_t resid, boolean_t sync); 72147005Sdes#endif /* sun */ 73255767Sdes 74147005Sdes#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) 75147005Sdesextern int zvol_create_minors(const char *name); 76147005Sdesextern void zvol_rename_minors(const char *oldname, const char *newname); 77147005Sdes#endif 78147005Sdes 79147005Sdes#endif /* _KERNEL */ 80147005Sdes 81147005Sdes#ifdef __cplusplus 82147005Sdes} 83147005Sdes#endif 84147005Sdes 85147005Sdes#endif /* _SYS_ZVOL_H */ 86147005Sdes