| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/util/errno.h" |
| |
| #include <cstring> |
| #include <glog/logging.h> |
| |
| #include "kudu/gutil/dynamic_annotations.h" |
| // IWYU pragma: no_include <features.h> |
| |
| namespace kudu { |
| |
| void ErrnoToCString(int err, char *buf, size_t buf_len) { |
| CHECK_GT(buf_len, 0); |
| #if !defined(__GLIBC__) || \ |
| ((_POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)) |
| // Using POSIX version 'int strerror_r(...)'. |
| int ret = strerror_r(err, buf, buf_len); |
| if (ret && ret != ERANGE && ret != EINVAL) { |
| strncpy(buf, "unknown error", buf_len); |
| buf[buf_len - 1] = '\0'; |
| } |
| #else |
| // Using GLIBC version |
| |
| // KUDU-1515: TSAN in Clang 3.9 has an incorrect interceptor for strerror_r: |
| // https://github.com/google/sanitizers/issues/696 |
| ANNOTATE_IGNORE_WRITES_BEGIN(); |
| char* ret = strerror_r(err, buf, buf_len); |
| ANNOTATE_IGNORE_WRITES_END(); |
| if (ret != buf) { |
| strncpy(buf, ret, buf_len); |
| buf[buf_len - 1] = '\0'; |
| } |
| #endif |
| } |
| } // namespace kudu |