usr/src/lib/libuuid/common/uuid_misc.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 _UUID_MISC_H
  27 #define _UUID_MISC_H
  28
  29 /*
  30  * The copyright in this file is taken from the original Leach
  31  * & Salz UUID specification, from which this implementation
  32  * is derived.
  33  */
  34
  35 /*
  36  * Copyright (c) 1990- 1993, 1996 Open Software Foundation, Inc.
  37  * Copyright (c) 1989 by Hewlett-Packard Company, Palo Alto, Ca. &
  38  * Digital Equipment Corporation, Maynard, Mass.  Copyright (c) 1998
  39  * Microsoft.  To anyone who acknowledges that this file is provided
  40  * "AS IS" without any express or implied warranty: permission to use,
  41  * copy, modify, and distribute this file for any purpose is hereby
  42  * granted without fee, provided that the above copyright notices and
  43  * this notice appears in all source code copies, and that none of the
  44  * names of Open Software Foundation, Inc., Hewlett-Packard Company,
  45  * or Digital Equipment Corporation be used in advertising or
  46  * publicity pertaining to distribution of the software without
  47  * specific, written prior permission.  Neither Open Software
  48  * Foundation, Inc., Hewlett-Packard Company, Microsoft, nor Digital
  49  * Equipment Corporation makes any representations about the
  50  * suitability of this software for any purpose.
  51  */
  52
  53 #ifdef  __cplusplus
  54 extern "C" {
  55 #endif
  56
  57 #include <uuid/uuid.h>
  58 #include <sys/types.h>
  59 #include <thread.h>
  60
  61 typedef uint64_t                uuid_time_t;
  62
  63 /*
  64  * data type for UUID generator persistent state
  65  */
  66 typedef struct {
  67         uuid_time_t             ts;     /* saved timestamp */
  68         uuid_node_t             node;   /* saved node ID */
  69         uint16_t                clock;  /* saved clock sequence */
  70 } uuid_state_t;
  71
  72 typedef struct {
  73         mutex_t                 lock;
  74         uuid_state_t            state;
  75 } shared_buffer_t;
  76
  77 #define STATE_LOCATION          "/var/sadm/system/uuid_state"
  78 #define URANDOM_PATH            "/dev/urandom"
  79 #define MAX_RETRY               8
  80 #define VER1_MASK               0xefff
  81
  82 #ifdef  __cplusplus
  83 }
  84 #endif
  85
  86 #endif /* _UUID_MISC_H */