LXR busybox/e2fsprogs/old_e2fsprogs/uuid/unpack.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * Internal routine for unpacking UUID
   4 *
   5 * Copyright (C) 1996, 1997 Theodore Ts'o.
   6 *
   7 * %Begin-Header%
   8 * Redistribution and use in source and binary forms, with or without
   9 * modification, are permitted provided that the following conditions
  10 * are met:
  11 * 1. Redistributions of source code must retain the above copyright
  12 *    notice, and the entire permission notice in its entirety,
  13 *    including the disclaimer of warranties.
  14 * 2. Redistributions in binary form must reproduce the above copyright
  15 *    notice, this list of conditions and the following disclaimer in the
  16 *    documentation and/or other materials provided with the distribution.
  17 * 3. The name of the author may not be used to endorse or promote
  18 *    products derived from this software without specific prior
  19 *    written permission.
  20 *
  21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
  24 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
  25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  31 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
  32 * DAMAGE.
  33 * %End-Header%
  34 */
  35
  36#include <string.h>
  37#include "uuidP.h"
  38
  39void uuid_unpack(const uuid_t in, struct uuid *uu)
  40{
  41        const uint8_t *ptr = in;
  42        uint32_t tmp;
  43
  44        tmp = *ptr++;
  45        tmp = (tmp << 8) | *ptr++;
  46        tmp = (tmp << 8) | *ptr++;
  47        tmp = (tmp << 8) | *ptr++;
  48        uu->time_low = tmp;
  49
  50        tmp = *ptr++;
  51        tmp = (tmp << 8) | *ptr++;
  52        uu->time_mid = tmp;
  53
  54        tmp = *ptr++;
  55        tmp = (tmp << 8) | *ptr++;
  56        uu->time_hi_and_version = tmp;
  57
  58        tmp = *ptr++;
  59        tmp = (tmp << 8) | *ptr++;
  60        uu->clock_seq = tmp;
  61
  62        memcpy(uu->node, ptr, 6);
  63}
  64