include/sys/zvol.h

   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 #define ZVOL_OBJ                1ULL
  32 #define ZVOL_ZAP_OBJ            2ULL
  33
  34 #ifdef _KERNEL
  35
  36 extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
  37 extern int zvol_check_volblocksize(uint64_t volblocksize);
  38 extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
  39 extern boolean_t zvol_is_zvol(const char *);
  40 extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
  41 extern int zvol_create_minor(const char *);
  42 extern int zvol_create_minors(const char *);
  43 extern int zvol_remove_minor(const char *);
  44 extern void zvol_remove_minors(const char *);
  45 extern int zvol_set_volsize(const char *, uint64_t);
  46 extern int zvol_set_volblocksize(const char *, uint64_t);
  47 extern int zvol_set_snapdev(const char *, uint64_t);
  48
  49 extern int zvol_init(void);
  50 extern void zvol_fini(void);
  51
  52 #endif /* _KERNEL */
  53 #endif /* _SYS_ZVOL_H */