1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "Utils.h"
18
19 #include <string.h>
20
21 using android::base::ErrnoError;
22 using android::base::Result;
23
24 namespace android {
25
zeroMemory(uint8_t * data,size_t size)26 void zeroMemory(uint8_t* data, size_t size) {
27 memset(data, 0, size);
28 }
29
setNonBlocking(android::base::borrowed_fd fd)30 Result<void> setNonBlocking(android::base::borrowed_fd fd) {
31 int flags = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_GETFL));
32 if (flags == -1) {
33 return ErrnoError() << "Could not get flags for fd";
34 }
35 if (int ret = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_SETFL, flags | O_NONBLOCK)); ret == -1) {
36 return ErrnoError() << "Could not set non-blocking flag for fd";
37 }
38 return {};
39 }
40
41 } // namespace android
42