5 * Copyright (C) 2014 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
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.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <sys/types.h>
37 #define URANDOM "/dev/urandom"
41 int __connman_util_get_random(uint64_t *val)
48 if (read(f, val, sizeof(uint64_t)) < 0) {
50 connman_warn_once("Could not read from "URANDOM);
57 int __connman_util_init(void)
64 f = open(URANDOM, O_RDONLY);
67 connman_warn("Could not open "URANDOM);
72 r = __connman_util_get_random(&val);
82 void __connman_util_cleanup(void)