1// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "platform/globals.h"
6#if defined(HOST_OS_MACOS)
7
8#include <errno.h> // NOLINT
9#include <fcntl.h> // NOLINT
10
11#include "bin/crypto.h"
12#include "bin/fdutils.h"
13#include "platform/signal_blocker.h"
14
15namespace dart {
16namespace bin {
17
18bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) {
19 intptr_t fd = TEMP_FAILURE_RETRY(open("/dev/urandom", O_RDONLY | O_CLOEXEC));
20 if (fd < 0) {
21 return false;
22 }
23 intptr_t bytes_read = 0;
24 do {
25 int res =
26 TEMP_FAILURE_RETRY(read(fd, buffer + bytes_read, count - bytes_read));
27 if (res < 0) {
28 int err = errno;
29 close(fd);
30 errno = err;
31 return false;
32 }
33 bytes_read += res;
34 } while (bytes_read < count);
35 close(fd);
36 return true;
37}
38
39} // namespace bin
40} // namespace dart
41
42#endif // defined(HOST_OS_MACOS)
43