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 (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 #ifndef _SYS_ZVOL_H 27 #define _SYS_ZVOL_H 28 29 #include <sys/zfs_context.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #define ZVOL_OBJ 1ULL 36 #define ZVOL_ZAP_OBJ 2ULL 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 *); 44 extern int zvol_remove_minor(const char *); 45 extern void zvol_remove_minors(const char *); 46 extern int zvol_set_volsize(const char *, uint64_t); 47 48 extern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr); 49 extern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks); 50 extern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr); 51 extern int zvol_strategy(buf_t *bp); 52 extern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr); 53 extern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr); 54 extern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr); 55 extern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr); 56 extern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, 57 int *rvalp); 58 extern int zvol_busy(void); 59 extern void zvol_init(void); 60 extern void zvol_fini(void); 61 62 extern int zvol_get_volume_params(minor_t minor, uint64_t *blksize, 63 uint64_t *max_xfer_len, void **minor_hdl, void **objset_hdl, void **zil_hdl, 64 void **rl_hdl, void **bonus_hdl); 65 extern uint64_t zvol_get_volume_size(void *minor_hdl); 66 extern int zvol_get_volume_wce(void *minor_hdl); 67 extern void zvol_log_write_minor(void *minor_hdl, dmu_tx_t *tx, offset_t off, 68 ssize_t resid, boolean_t sync); 69 70 #endif 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 #endif /* _SYS_ZVOL_H */ 77