usr/src/uts/common/sys/strsun.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  * 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 */