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.
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.
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]
23 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
29 #include <sys/zfs_context.h>
36 #define ZVOL_ZAP_OBJ 2ULL
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 *, major_t
, uint64_t);
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
,
58 extern int zvol_busy(void);
59 extern void zvol_init(void);
60 extern void zvol_fini(void);
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
);
76 #endif /* _SYS_ZVOL_H */