1  /*
       2   * Internal routine for packing UUIDs
       3   *
       4   * Copyright (C) 1996, 1997 Theodore Ts'o.
       5   *
       6   * %Begin-Header%
       7   * Redistribution and use in source and binary forms, with or without
       8   * modification, are permitted provided that the following conditions
       9   * are met:
      10   * 1. Redistributions of source code must retain the above copyright
      11   *    notice, and the entire permission notice in its entirety,
      12   *    including the disclaimer of warranties.
      13   * 2. Redistributions in binary form must reproduce the above copyright
      14   *    notice, this list of conditions and the following disclaimer in the
      15   *    documentation and/or other materials provided with the distribution.
      16   * 3. The name of the author may not be used to endorse or promote
      17   *    products derived from this software without specific prior
      18   *    written permission.
      19   *
      20   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
      21   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      22   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
      23   * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
      24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
      25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
      26   * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
      27   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
      28   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
      30   * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
      31   * DAMAGE.
      32   * %End-Header%
      33   */
      34  
      35  #include <string.h>
      36  #include "uuidP.h"
      37  
      38  void uuid_pack(const struct uuid *uu, uuid_t ptr)
      39  {
      40  	uint32_t	tmp;
      41  	unsigned char	*out = ptr;
      42  
      43  	tmp = uu->time_low;
      44  	out[3] = (unsigned char) tmp;
      45  	tmp >>= 8;
      46  	out[2] = (unsigned char) tmp;
      47  	tmp >>= 8;
      48  	out[1] = (unsigned char) tmp;
      49  	tmp >>= 8;
      50  	out[0] = (unsigned char) tmp;
      51  
      52  	tmp = uu->time_mid;
      53  	out[5] = (unsigned char) tmp;
      54  	tmp >>= 8;
      55  	out[4] = (unsigned char) tmp;
      56  
      57  	tmp = uu->time_hi_and_version;
      58  	out[7] = (unsigned char) tmp;
      59  	tmp >>= 8;
      60  	out[6] = (unsigned char) tmp;
      61  
      62  	tmp = uu->clock_seq;
      63  	out[9] = (unsigned char) tmp;
      64  	tmp >>= 8;
      65  	out[8] = (unsigned char) tmp;
      66  
      67  	memcpy(out+10, uu->node, 6);
      68  }
      69