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2676
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21
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22 /*
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6423
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23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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2676
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24 * Use is subject to license terms.
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25 */
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26
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27 #ifndef _SYS_ZVOL_H
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28 #define _SYS_ZVOL_H
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29
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30 #pragma ident "%Z%%M% %I% %E% SMI"
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31
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32 #include <sys/zfs_context.h>
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33
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34 #ifdef __cplusplus
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35 extern "C" {
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36 #endif
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37
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6423
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38 #define ZVOL_OBJ 1ULL
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39 #define ZVOL_ZAP_OBJ 2ULL
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40
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41 #ifdef _KERNEL
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42 extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
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43 extern int zvol_check_volblocksize(uint64_t volblocksize);
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2885
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44 extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
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4543
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45 extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
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4787
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46 extern int zvol_create_minor(const char *, major_t);
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47 extern int zvol_remove_minor(const char *);
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48 extern int zvol_set_volsize(const char *, major_t, uint64_t);
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49 extern int zvol_set_volblocksize(const char *, uint64_t);
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50
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51 extern int zvol_open(dev_t *devp, int flag, int otyp, cred_t *cr);
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52 extern int zvol_dump(dev_t dev, caddr_t addr, daddr_t offset, int nblocks);
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53 extern int zvol_close(dev_t dev, int flag, int otyp, cred_t *cr);
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54 extern int zvol_strategy(buf_t *bp);
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55 extern int zvol_read(dev_t dev, uio_t *uiop, cred_t *cr);
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56 extern int zvol_write(dev_t dev, uio_t *uiop, cred_t *cr);
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57 extern int zvol_aread(dev_t dev, struct aio_req *aio, cred_t *cr);
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58 extern int zvol_awrite(dev_t dev, struct aio_req *aio, cred_t *cr);
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59 extern int zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr,
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60 int *rvalp);
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61 extern int zvol_busy(void);
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62 extern void zvol_init(void);
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63 extern void zvol_fini(void);
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64 #endif
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65
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66 #ifdef __cplusplus
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67 }
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68 #endif
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69
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70 #endif /* _SYS_ZVOL_H */
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