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58 lines
1.5 KiB
58 lines
1.5 KiB
// |
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// Copyright 2017 The Android Open Source Project |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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#include "hci_protocol.h" |
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#define LOG_TAG "android.hardware.bluetooth-hci-hci_protocol" |
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#include <assert.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
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#include <log/log.h> |
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namespace android { |
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namespace hardware { |
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namespace bluetooth { |
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namespace hci { |
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size_t HciProtocol::WriteSafely(int fd, const uint8_t* data, size_t length) { |
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size_t transmitted_length = 0; |
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while (length > 0) { |
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ssize_t ret = |
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TEMP_FAILURE_RETRY(write(fd, data + transmitted_length, length)); |
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if (ret == -1) { |
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if (errno == EAGAIN) continue; |
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ALOGE("%s error writing to UART (%s)", __func__, strerror(errno)); |
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break; |
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} else if (ret == 0) { |
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// Nothing written :( |
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ALOGE("%s zero bytes written - something went wrong...", __func__); |
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break; |
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} |
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transmitted_length += ret; |
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length -= ret; |
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} |
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return transmitted_length; |
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} |
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} // namespace hci |
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} // namespace bluetooth |
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} // namespace hardware |
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} // namespace android
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