1 // Copyright 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SANDBOXED_API_UTIL_STRERROR_H_ 16 #define SANDBOXED_API_UTIL_STRERROR_H_ 17 18 #include <cstddef> 19 #include <string> 20 21 namespace sapi { 22 23 // Returns a human-readable string describing the given POSIX error code. This 24 // is a portable and thread-safe alternative to strerror(). If the error code is 25 // not translatable, the string will be "Unknown error nnn". errno will not be 26 // modified by this call. This function is thread-safe. 27 std::string StrError(int errnum); 28 29 // Same as StrError but uses provided buffer (does not allocate memory). 30 // Might use and return a static immutable buffer instead of buf. 31 const char* RawStrError(int errnum, char* buf, size_t buflen); 32 33 } // namespace sapi 34 35 #endif // SANDBOXED_API_STRERROR_H_ 36