include/sys/winlockio.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_WINLOCKIO_H
  28 #define _SYS_WINLOCKIO_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/types.h>
  33 #include <sys/ioccom.h>
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /*
  40  * Structure for allocating lock contexts.
  41  * The page number portion of sy_ident is the offset for mmap(2).
  42  * The page offset portion of sy_ident is the byte-offset relative to
  43  * the start of the page returned by mmap(2) and should added to it.
  44  */
  45
  46 struct  winlockalloc {
  47         uint_t  sy_key;         /* user-provided key, if any */
  48         uint_t  sy_ident;       /* system-provided identification */
  49 };
  50
  51 /*
  52  * Structure for getting and setting lock timeouts or NOTIMEOUT flag
  53  */
  54
  55 struct  winlocktimeout {
  56         uint_t  sy_ident;       /* system-provided identification */
  57         uint_t  sy_timeout;     /* timeout value in seconds */
  58         int     sy_flags;       /* Flags for lock context - see defs below */
  59 };
  60
  61 #define WIOC    ('L'<<8)
  62
  63
  64 #define WINLOCKALLOC            (WIOC|0)
  65 #define WINLOCKFREE             (WIOC|1)
  66 #define WINLOCKSETTIMEOUT       (WIOC|2)
  67 #define WINLOCKGETTIMEOUT       (WIOC|3)
  68 #define WINLOCKDUMP             (WIOC|4)
  69
  70 #ifndef GRABPAGEALLOC
  71 #include <sys/fbio.h>           /* defines GRAB* ioctls */
  72 #endif
  73
  74 /* flag bits */
  75 #define SY_NOTIMEOUT    0x1     /* This client never times out */
  76
  77 #ifdef  _KERNEL
  78
  79 #define UFLAGS          0x00ff  /* flags usable by users */
  80 #define KFLAGS          0xff00  /* flags used by driver implementation */
  81 #define TRASHPAGE       0x0400  /* process has unlock mapping to trashpage */
  82
  83 #endif  /* _KERNEL */
  84
  85 #ifdef  __cplusplus
  86 }
  87 #endif
  88
  89 #endif  /* _SYS_WINLOCKIO_H */