FreeBSD/Linux Kernel Cross Reference
sys/sys/uuid.h

     /*      $OpenBSD: uuid.h,v 1.3 2014/08/31 09:36:39 miod Exp $   */
     /*      $NetBSD: uuid.h,v 1.5 2008/11/18 14:01:03 joerg Exp $   */
     
     /*
      * Copyright (c) 2002 Marcel Moolenaar
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     *
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: /repoman/r/ncvs/src/sys/sys/uuid.h,v 1.3 2003/05/31 16:47:07 phk Exp $
     */
    
    #ifndef _SYS_UUID_H_
    #define _SYS_UUID_H_
    
    /* Length of a node address (an IEEE 802 address). */
    #define _UUID_NODE_LEN          6
    
    /* Length of a printed UUID. */
    #define _UUID_BUF_LEN           38
    
    /*
     * See also:
     *      http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
     *      http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
     *
     * A DCE 1.1 compatible source representation of UUIDs.
     */
    struct uuid {
            uint32_t        time_low;
            uint16_t        time_mid;
            uint16_t        time_hi_and_version;
            uint8_t         clock_seq_hi_and_reserved;
            uint8_t         clock_seq_low;
            uint8_t         node[_UUID_NODE_LEN];
    };
    
    #ifdef _KERNEL
    
    #define UUID_NODE_LEN   _UUID_NODE_LEN
    #define UUID_BUF_LEN    _UUID_BUF_LEN
    
    int     uuid_snprintf(char *, size_t, const struct uuid *);
    int     uuid_printf(const struct uuid *);
    void    uuid_dec_be(const void *, struct uuid *);
    void    uuid_dec_le(const void *, struct uuid *);
    void    uuid_enc_be(void *, const struct uuid *);
    void    uuid_enc_le(void *, const struct uuid *);
    
    #else   /* _KERNEL */
    
    typedef struct uuid uuid_t;
    
    #endif  /* _KERNEL */
    
    #endif /* _SYS_UUID_H_ */

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