1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd 22168404Spjd/* 23219089Spjd * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 24168404Spjd */ 25168404Spjd 26168404Spjd#ifndef _SYS_ZVOL_H 27168404Spjd#define _SYS_ZVOL_H 28168404Spjd 29168404Spjd#include <sys/zfs_context.h> 30168404Spjd 31168404Spjd#ifdef __cplusplus 32168404Spjdextern "C" { 33168404Spjd#endif 34168404Spjd 35185029Spjd#define ZVOL_OBJ 1ULL 36185029Spjd#define ZVOL_ZAP_OBJ 2ULL 37185029Spjd 38168404Spjd#ifdef _KERNEL 39168404Spjdextern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize); 40168404Spjdextern int zvol_check_volblocksize(uint64_t volblocksize); 41168404Spjdextern int zvol_get_stats(objset_t *os, nvlist_t *nv); 42185029Spjdextern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 43219089Spjdextern int zvol_create_minor(const char *); 44168404Spjdextern int zvol_remove_minor(const char *); 45219089Spjdextern void zvol_remove_minors(const char *); 46276069Ssmhextern int zvol_set_volsize(const char *, uint64_t); 47168404Spjd 48277300Ssmh#ifdef illumos 49168404Spjdextern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr); 50185029Spjdextern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks); 51168404Spjdextern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr); 52168404Spjdextern int zvol_strategy(buf_t *bp); 53168404Spjdextern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr); 54168404Spjdextern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr); 55168404Spjdextern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr); 56168404Spjdextern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr); 57277300Ssmh#endif /* illumos */ 58168404Spjdextern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, 59168404Spjd int *rvalp); 60168404Spjdextern int zvol_busy(void); 61168404Spjdextern void zvol_init(void); 62168404Spjdextern void zvol_fini(void); 63219089Spjd 64277300Ssmh#ifdef illumos 65219089Spjdextern int zvol_get_volume_params(minor_t minor, uint64_t *blksize, 66219089Spjd uint64_t *max_xfer_len, void **minor_hdl, void **objset_hdl, void **zil_hdl, 67219089Spjd void **rl_hdl, void **bonus_hdl); 68219089Spjdextern uint64_t zvol_get_volume_size(void *minor_hdl); 69219089Spjdextern int zvol_get_volume_wce(void *minor_hdl); 70219089Spjdextern void zvol_log_write_minor(void *minor_hdl, dmu_tx_t *tx, offset_t off, 71219089Spjd ssize_t resid, boolean_t sync); 72277300Ssmh#endif /* illumos */ 73219089Spjd 74252431Srmh#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) 75219089Spjdextern int zvol_create_minors(const char *name); 76219317Spjdextern void zvol_rename_minors(const char *oldname, const char *newname); 77168404Spjd#endif 78168404Spjd 79219320Spjd#endif /* _KERNEL */ 80219089Spjd 81168404Spjd#ifdef __cplusplus 82168404Spjd} 83168404Spjd#endif 84168404Spjd 85168404Spjd#endif /* _SYS_ZVOL_H */ 86