1 /* 2 * UUID/GUID definition 3 * 4 * Copyright (C) 2010, Intel Corp. 5 * Huang Ying <ying.huang@intel.com> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License version 9 * 2 as published by the Free Software Foundation; 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #ifndef _LINUX_UUID_H_ 22 #define _LINUX_UUID_H_ 23 24 #include <linux/types.h> 25 #include <linux/string.h> 26 27 typedef struct { 28 __u8 b[16]; 29 } uuid_le; 30 31 typedef struct { 32 __u8 b[16]; 33 } uuid_be; 34 35 #define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 36 ((uuid_le) \ 37 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 38 (b) & 0xff, ((b) >> 8) & 0xff, \ 39 (c) & 0xff, ((c) >> 8) & 0xff, \ 40 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 41 42 #define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 43 ((uuid_be) \ 44 {{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \ 45 ((b) >> 8) & 0xff, (b) & 0xff, \ 46 ((c) >> 8) & 0xff, (c) & 0xff, \ 47 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 48 49 #define NULL_UUID_LE \ 50 UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ 51 0x00, 0x00, 0x00, 0x00) 52 53 #define NULL_UUID_BE \ 54 UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ 55 0x00, 0x00, 0x00, 0x00) 56 57 #ifdef __KERNEL__ 58 59 static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2) 60 { 61 return memcmp(&u1, &u2, sizeof(uuid_le)); 62 } 63 64 static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) 65 { 66 return memcmp(&u1, &u2, sizeof(uuid_be)); 67 } 68 69 extern void uuid_le_gen(uuid_le *u); 70 extern void uuid_be_gen(uuid_be *u); 71 72 #endif /* __KERNEL__ */ 73 74 #endif 75