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uuid.h revision 1.4
      1  1.4  riastrad /*	$NetBSD: uuid.h,v 1.4 2021/12/19 11:38:04 riastradh Exp $	*/
      2  1.2  riastrad 
      3  1.2  riastrad /*-
      4  1.2  riastrad  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  1.2  riastrad  * All rights reserved.
      6  1.2  riastrad  *
      7  1.2  riastrad  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2  riastrad  * by Taylor R. Campbell.
      9  1.2  riastrad  *
     10  1.2  riastrad  * Redistribution and use in source and binary forms, with or without
     11  1.2  riastrad  * modification, are permitted provided that the following conditions
     12  1.2  riastrad  * are met:
     13  1.2  riastrad  * 1. Redistributions of source code must retain the above copyright
     14  1.2  riastrad  *    notice, this list of conditions and the following disclaimer.
     15  1.2  riastrad  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.2  riastrad  *    notice, this list of conditions and the following disclaimer in the
     17  1.2  riastrad  *    documentation and/or other materials provided with the distribution.
     18  1.2  riastrad  *
     19  1.2  riastrad  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.2  riastrad  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.2  riastrad  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.2  riastrad  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.2  riastrad  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.2  riastrad  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.2  riastrad  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.2  riastrad  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.2  riastrad  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.2  riastrad  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.2  riastrad  * POSSIBILITY OF SUCH DAMAGE.
     30  1.2  riastrad  */
     31  1.2  riastrad 
     32  1.2  riastrad #ifndef _LINUX_UUID_H_
     33  1.2  riastrad #define _LINUX_UUID_H_
     34  1.2  riastrad 
     35  1.4  riastrad typedef struct {
     36  1.4  riastrad 	unsigned char guid_bytes[16];
     37  1.4  riastrad } guid_t;
     38  1.4  riastrad 
     39  1.4  riastrad #define	GUID_INIT(x, y, z, v0, v1, v2, v3, v4, v5, v6, v7) ((guid_t)	      \
     40  1.4  riastrad {									      \
     41  1.4  riastrad 	.guid_bytes = {							      \
     42  1.4  riastrad 		[0] = (x) & 0xff,					      \
     43  1.4  riastrad 		[1] = ((x) >> 8) & 0xff,				      \
     44  1.4  riastrad 		[2] = ((x) >> 16) & 0xff,				      \
     45  1.4  riastrad 		[3] = ((x) >> 24) & 0xff,				      \
     46  1.4  riastrad 		[4] = (y) & 0xff,					      \
     47  1.4  riastrad 		[5] = ((y) >> 8) & 0xff,				      \
     48  1.4  riastrad 		[6] = (z) & 0xff,					      \
     49  1.4  riastrad 		[7] = ((z) >> 8) & 0xff,				      \
     50  1.4  riastrad 		[8] = (v0),						      \
     51  1.4  riastrad 		[9] = (v1),						      \
     52  1.4  riastrad 		[10] = (v2),						      \
     53  1.4  riastrad 		[11] = (v3),						      \
     54  1.4  riastrad 		[12] = (v4),						      \
     55  1.4  riastrad 		[13] = (v5),						      \
     56  1.4  riastrad 		[14] = (v6),						      \
     57  1.4  riastrad 		[15] = (v7),						      \
     58  1.4  riastrad 	}								      \
     59  1.4  riastrad })
     60  1.4  riastrad 
     61  1.2  riastrad #define	UUID_STRING_LEN		36
     62  1.2  riastrad 
     63  1.3  riastrad static inline int
     64  1.3  riastrad uuid_is_valid(const char uuid[static 36])
     65  1.3  riastrad {
     66  1.3  riastrad 	unsigned i;
     67  1.3  riastrad 
     68  1.3  riastrad 	for (i = 0; i < 36; i++) {
     69  1.3  riastrad 		switch (i) {
     70  1.3  riastrad 		case 8:		/* xxxxxxxx[-]xxxx-xxxx-xxxx-xxxxxxxxxxxx */
     71  1.3  riastrad 		case 12 + 1:	/* xxxxxxxx-xxxx[-]xxxx-xxxx-xxxxxxxxxxxx */
     72  1.3  riastrad 		case 16 + 2:	/* xxxxxxxx-xxxx-xxxx[-]xxxx-xxxxxxxxxxxx */
     73  1.3  riastrad 		case 20 + 3:	/* xxxxxxxx-xxxx-xxxx-xxxx[-]xxxxxxxxxxxx */
     74  1.3  riastrad 			if (uuid[i] == '-')
     75  1.3  riastrad 				continue;
     76  1.3  riastrad 			return 0;
     77  1.3  riastrad 		default:
     78  1.3  riastrad 			if ('0' <= uuid[i] && uuid[i] <= '9')
     79  1.3  riastrad 				continue;
     80  1.3  riastrad 			if ('a' <= uuid[i] && uuid[i] <= 'f')
     81  1.3  riastrad 				continue;
     82  1.3  riastrad 			if ('A' <= uuid[i] && uuid[i] <= 'F')
     83  1.3  riastrad 				continue;
     84  1.3  riastrad 			return 0;
     85  1.3  riastrad 		}
     86  1.3  riastrad 	}
     87  1.3  riastrad 
     88  1.3  riastrad 	return 1;
     89  1.3  riastrad }
     90  1.3  riastrad 
     91  1.2  riastrad #endif  /* _LINUX_UUID_H_ */
     92