blob: e0b42577999cce3aafe33910f18afc8f06babe8f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
// Copyright (c) 2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/rand_util.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include "base/logging.h"
namespace base {
uint64 RandUint64() {
uint64 number;
int urandom_fd = open("/dev/urandom", O_RDONLY);
CHECK(urandom_fd >= 0);
ssize_t bytes_read = read(urandom_fd, &number, sizeof(number));
CHECK(bytes_read == sizeof(number));
close(urandom_fd);
return number;
}
} // namespace base
|
