77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _SYS_ZVOL_H
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#define _SYS_ZVOL_H
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#include <sys/zfs_context.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ZVOL_OBJ 1ULL
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#define ZVOL_ZAP_OBJ 2ULL
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#ifdef _KERNEL
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extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
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extern int zvol_check_volblocksize(uint64_t volblocksize);
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extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
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extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
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extern int zvol_create_minor(const char *);
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extern int zvol_remove_minor(const char *);
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extern void zvol_remove_minors(const char *);
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extern int zvol_set_volsize(const char *, major_t, uint64_t);
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extern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr);
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extern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks);
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extern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr);
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extern int zvol_strategy(buf_t *bp);
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extern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr);
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extern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr);
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extern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr);
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extern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr);
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extern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr,
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int *rvalp);
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extern int zvol_busy(void);
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extern void zvol_init(void);
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extern void zvol_fini(void);
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extern int zvol_get_volume_params(minor_t minor, uint64_t *blksize,
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uint64_t *max_xfer_len, void **minor_hdl, void **objset_hdl, void **zil_hdl,
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void **rl_hdl, void **bonus_hdl);
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extern uint64_t zvol_get_volume_size(void *minor_hdl);
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extern int zvol_get_volume_wce(void *minor_hdl);
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extern void zvol_log_write_minor(void *minor_hdl, dmu_tx_t *tx, offset_t off,
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ssize_t resid, boolean_t sync);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ZVOL_H */
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