pack.c

00001 /*
00002  * Internal routine for packing UUID's
00003  * 
00004  * Copyright (C) 1996, 1997 Theodore Ts'o.
00005  *
00006  * %Begin-Header%
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, and the entire permission notice in its entirety,
00012  *    including the disclaimer of warranties.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. The name of the author may not be used to endorse or promote
00017  *    products derived from this software without specific prior
00018  *    written permission.
00019  * 
00020  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
00021  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00022  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
00023  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
00024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
00027  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00029  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
00030  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
00031  * DAMAGE.
00032  * %End-Header%
00033  */
00034 
00035 #include <string.h>
00036 #include "uuidP.h"
00037 
00038 void uuid_pack(const struct uuid *uu, uuid_t ptr)
00039 {
00040         uint32_t        tmp;
00041         unsigned char   *out = ptr;
00042 
00043         tmp = uu->time_low;
00044         out[3] = (unsigned char) tmp;
00045         tmp >>= 8;
00046         out[2] = (unsigned char) tmp;
00047         tmp >>= 8;
00048         out[1] = (unsigned char) tmp;
00049         tmp >>= 8;
00050         out[0] = (unsigned char) tmp;
00051         
00052         tmp = uu->time_mid;
00053         out[5] = (unsigned char) tmp;
00054         tmp >>= 8;
00055         out[4] = (unsigned char) tmp;
00056 
00057         tmp = uu->time_hi_and_version;
00058         out[7] = (unsigned char) tmp;
00059         tmp >>= 8;
00060         out[6] = (unsigned char) tmp;
00061 
00062         tmp = uu->clock_seq;
00063         out[9] = (unsigned char) tmp;
00064         tmp >>= 8;
00065         out[8] = (unsigned char) tmp;
00066 
00067         memcpy(out+10, uu->node, 6);
00068 }
00069 

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