Liam Appelbe
ec599a5977
This covers Linux, Mac, Android, and Fuchsia. Bug: https://github.com/dart-lang/sdk/issues/35954 Fixes: https://github.com/dart-lang/sdk/issues/35954 Change-Id: I8142332c530be8ad3ce46312a4a5ac750953c288 Reviewed-on: https://dart-review.googlesource.com/c/93320 Commit-Queue: Liam Appelbe <liama@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(HOST_OS_LINUX)
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#include <errno.h> // NOLINT
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#include <fcntl.h> // NOLINT
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#include "bin/crypto.h"
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#include "bin/fdutils.h"
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#include "platform/signal_blocker.h"
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namespace dart {
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namespace bin {
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bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) {
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ThreadSignalBlocker signal_blocker(SIGPROF);
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intptr_t fd =
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TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(open("/dev/urandom", O_RDONLY));
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if (fd < 0) {
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return false;
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}
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intptr_t bytes_read = 0;
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do {
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int res = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(
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read(fd, buffer + bytes_read, count - bytes_read));
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if (res < 0) {
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int err = errno;
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close(fd);
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errno = err;
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return false;
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}
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bytes_read += res;
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} while (bytes_read < count);
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close(fd);
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return true;
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(HOST_OS_LINUX)
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