xref: /illumos-gate/usr/src/uts/common/sys/strsun.h (revision 22eb7cb5)
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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_SYS_STRSUN_H
27 #define	_SYS_STRSUN_H
28 
29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #include <sys/stream.h>
32 #include <sys/types.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 /*
39  * Solaris DDI STREAMS utility routines.
40  *
41  * See the appropriate section 9F manpage for documentation.
42  */
43 
44 #define	DB_BASE(mp)	((mp)->b_datap->db_base)
45 #define	DB_LIM(mp)	((mp)->b_datap->db_lim)
46 #define	DB_REF(mp)	((mp)->b_datap->db_ref)
47 #define	DB_TYPE(mp)	((mp)->b_datap->db_type)
48 #define	DB_FLAGS(mp)	((mp)->b_datap->db_flags)
49 
50 #define	_PTRDIFF(p1, p2)	((intptr_t)((uintptr_t)(p1) - (uintptr_t)(p2)))
51 #define	MBLKL(mp)		_PTRDIFF((mp)->b_wptr, (mp)->b_rptr)
52 #define	MBLKSIZE(mp)		_PTRDIFF(DB_LIM(mp), DB_BASE(mp))
53 #define	MBLKHEAD(mp)		_PTRDIFF((mp)->b_rptr, DB_BASE(mp))
54 #define	MBLKTAIL(mp)		_PTRDIFF(DB_LIM(mp), (mp)->b_wptr)
55 #define	MBLKIN(mp, off, len) (((off) <= MBLKL(mp)) && \
56 	(((mp)->b_rptr + (off) + (len)) <= (mp)->b_wptr))
57 
58 #ifdef	_KERNEL
59 extern void	mcopyin(mblk_t *, void *, size_t, void *);
60 extern void	mcopyout(mblk_t *, void *, size_t, void *, mblk_t *);
61 extern void	merror(queue_t *, mblk_t *, int);
62 extern void	mioc2ack(mblk_t *, mblk_t *, size_t, int);
63 extern void	miocack(queue_t *, mblk_t *, int, int);
64 extern void	miocnak(queue_t *, mblk_t *, int, int);
65 extern int	miocpullup(mblk_t *, size_t);
66 extern mblk_t	*mexchange(queue_t *, mblk_t *, size_t, uchar_t, int32_t);
67 extern size_t	msgsize(mblk_t *);
68 extern void	mcopymsg(mblk_t *, void *);
69 
70 #endif	/* _KERNEL */
71 
72 #ifdef	__cplusplus
73 }
74 #endif
75 
76 #endif	/* _SYS_STRSUN_H */
77