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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/rand_util.h" | 5 #include "base/rand_util.h" |
6 #include "base/rand_util_c.h" | 6 #include "base/rand_util_c.h" |
7 | 7 |
8 #include <errno.h> | 8 #include <errno.h> |
9 #include <fcntl.h> | 9 #include <fcntl.h> |
10 #include <unistd.h> | 10 #include <unistd.h> |
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29 ~URandomFd() { | 29 ~URandomFd() { |
30 close(fd_); | 30 close(fd_); |
31 } | 31 } |
32 | 32 |
33 int fd() const { return fd_; } | 33 int fd() const { return fd_; } |
34 | 34 |
35 private: | 35 private: |
36 int fd_; | 36 int fd_; |
37 }; | 37 }; |
38 | 38 |
39 base::LazyInstance<URandomFd> g_urandom_fd(base::LINKER_INITIALIZED); | 39 base::LazyInstance<URandomFd> g_urandom_fd = LAZY_INSTANCE_INITIALIZER; |
40 | 40 |
41 } // namespace | 41 } // namespace |
42 | 42 |
43 namespace base { | 43 namespace base { |
44 | 44 |
45 uint64 RandUint64() { | 45 uint64 RandUint64() { |
46 uint64 number; | 46 uint64 number; |
47 | 47 |
48 int urandom_fd = g_urandom_fd.Pointer()->fd(); | 48 int urandom_fd = g_urandom_fd.Pointer()->fd(); |
49 bool success = file_util::ReadFromFD(urandom_fd, | 49 bool success = file_util::ReadFromFD(urandom_fd, |
50 reinterpret_cast<char*>(&number), | 50 reinterpret_cast<char*>(&number), |
51 sizeof(number)); | 51 sizeof(number)); |
52 CHECK(success); | 52 CHECK(success); |
53 | 53 |
54 return number; | 54 return number; |
55 } | 55 } |
56 | 56 |
57 } // namespace base | 57 } // namespace base |
58 | 58 |
59 int GetUrandomFD(void) { | 59 int GetUrandomFD(void) { |
60 return g_urandom_fd.Pointer()->fd(); | 60 return g_urandom_fd.Pointer()->fd(); |
61 } | 61 } |
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