1 /* 2 * Internal routine for unpacking UUID 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_unpack(const uuid_t in, struct uuid *uu) 39 { 40 const uint8_t *ptr = in; 41 uint32_t tmp; 42 43 tmp = *ptr++; 44 tmp = (tmp << 8) | *ptr++; 45 tmp = (tmp << 8) | *ptr++; 46 tmp = (tmp << 8) | *ptr++; 47 uu->time_low = tmp; 48 49 tmp = *ptr++; 50 tmp = (tmp << 8) | *ptr++; 51 uu->time_mid = tmp; 52 53 tmp = *ptr++; 54 tmp = (tmp << 8) | *ptr++; 55 uu->time_hi_and_version = tmp; 56 57 tmp = *ptr++; 58 tmp = (tmp << 8) | *ptr++; 59 uu->clock_seq = tmp; 60 61 memcpy(uu->node, ptr, 6); 62 } 63 64
