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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 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 | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "platform/globals.h" | 5 #include "platform/globals.h" |
6 #if defined(TARGET_OS_LINUX) | 6 #if defined(TARGET_OS_LINUX) |
7 | 7 |
8 #include <errno.h> // NOLINT | 8 #include <errno.h> // NOLINT |
9 #include <fcntl.h> // NOLINT | 9 #include <fcntl.h> // NOLINT |
10 | 10 |
11 #include "bin/crypto.h" | 11 #include "bin/crypto.h" |
12 #include "bin/fdutils.h" | 12 #include "bin/fdutils.h" |
13 #include "platform/signal_blocker.h" | 13 #include "platform/signal_blocker.h" |
14 | 14 |
15 namespace dart { | 15 namespace dart { |
16 namespace bin { | 16 namespace bin { |
17 | 17 |
18 bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) { | 18 bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) { |
19 ThreadSignalBlocker signal_blocker(SIGPROF); | 19 ThreadSignalBlocker signal_blocker(SIGPROF); |
20 intptr_t fd = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER( | 20 intptr_t fd = |
21 open("/dev/urandom", O_RDONLY)); | 21 TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(open("/dev/urandom", O_RDONLY)); |
22 if (fd < 0) { | 22 if (fd < 0) { |
23 return false; | 23 return false; |
24 } | 24 } |
25 intptr_t bytes_read = 0; | 25 intptr_t bytes_read = 0; |
26 do { | 26 do { |
27 int res = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER( | 27 int res = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER( |
28 read(fd, buffer + bytes_read, count - bytes_read)); | 28 read(fd, buffer + bytes_read, count - bytes_read)); |
29 if (res < 0) { | 29 if (res < 0) { |
30 int err = errno; | 30 int err = errno; |
31 VOID_TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(close(fd)); | 31 VOID_TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(close(fd)); |
32 errno = err; | 32 errno = err; |
33 return false; | 33 return false; |
34 } | 34 } |
35 bytes_read += res; | 35 bytes_read += res; |
36 } while (bytes_read < count); | 36 } while (bytes_read < count); |
37 VOID_TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(close(fd)); | 37 VOID_TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(close(fd)); |
38 return true; | 38 return true; |
39 } | 39 } |
40 | 40 |
41 } // namespace bin | 41 } // namespace bin |
42 } // namespace dart | 42 } // namespace dart |
43 | 43 |
44 #endif // defined(TARGET_OS_LINUX) | 44 #endif // defined(TARGET_OS_LINUX) |
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