1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2011 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
33 typedef union sd_id128 sd_id128_t;
40 char *sd_id128_to_string(sd_id128_t id, char s[33]);
42 int sd_id128_from_string(const char s[33], sd_id128_t *ret);
44 int sd_id128_randomize(sd_id128_t *ret);
46 int sd_id128_get_machine(sd_id128_t *ret);
48 int sd_id128_get_boot(sd_id128_t *ret);
50 #define SD_ID128_MAKE(v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) \
51 ((sd_id128_t) { .bytes = { 0x##v0, 0x##v1, 0x##v2, 0x##v3, 0x##v4, 0x##v5, 0x##v6, 0x##v7, \
52 0x##v8, 0x##v9, 0x##v10, 0x##v11, 0x##v12, 0x##v13, 0x##v14, 0x##v15 }})
54 /* Note that SD_ID128_FORMAT_VAL will evaluate the passed argument 16
55 * times. It is hence not a good idea to call this macro with an
56 * expensive function as paramater or an expression with side
58 #define SD_ID128_FORMAT_STR "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
59 #define SD_ID128_FORMAT_VAL(x) (x).bytes[0], (x).bytes[1], (x).bytes[2], (x).bytes[3], (x).bytes[4], (x).bytes[5], (x).bytes[6], (x).bytes[7], (x).bytes[8], (x).bytes[9], (x).bytes[10], (x).bytes[11], (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]
61 static inline bool sd_id128_equal(sd_id128_t a, sd_id128_t b) {
62 return memcmp(&a, &b, 16) == 0;