2 * Copyright (c) 2016 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
37 static void osdep_uuidgen(mkimg_uuid_t *);
40 #include <uuid/uuid.h>
43 osdep_uuidgen(mkimg_uuid_t *uuid)
46 uuid_generate_time((void *)uuid);
48 #endif /* __APPLE__ */
54 osdep_uuidgen(mkimg_uuid_t *uuid)
57 uuidgen((void *)uuid, 1);
59 #endif /* __FreeBSD__ */
66 osdep_uuidgen(mkimg_uuid_t *uuid)
69 uint64_t time = 0x01B21DD213814000LL;
73 if (gettimeofday(&tv, NULL) == -1)
76 time += (uint64_t)tv.tv_sec * 10000000LL;
77 time += tv.tv_usec * 10;
79 uuid->time_low = (uint32_t)time;
80 uuid->time_mid = (uint16_t)(time >> 32);
81 uuid->time_hi_and_version = (uint16_t)(time >> 48) & 0xfff;
82 uuid->time_hi_and_version |= 1 << 12;
86 uuid->clock_seq_hi_and_reserved = (uint8_t)(seq >> 8) & 0x3f;
87 uuid->clock_seq_low = (uint8_t)seq;
89 for (i = 0; i < 6; i++)
90 uuid->node[i] = (uint8_t)random();
91 uuid->node[0] |= 0x01;
93 #endif /* __linux__ */
96 mkimg_uuid(mkimg_uuid_t *uuid)
98 static uint8_t gen[sizeof(mkimg_uuid_t)];
106 for (i = 0; i < sizeof(gen); i++)
108 memcpy(uuid, gen, sizeof(*uuid));
112 mkimg_uuid_enc(void *buf, const mkimg_uuid_t *uuid)
117 le32enc(p, uuid->time_low);
118 le16enc(p + 4, uuid->time_mid);
119 le16enc(p + 6, uuid->time_hi_and_version);
120 p[8] = uuid->clock_seq_hi_and_reserved;
121 p[9] = uuid->clock_seq_low;
122 for (i = 0; i < 6; i++)
123 p[10 + i] = uuid->node[i];