From fbcdf864613bfeb84edfa945304c065f6a29b44e Mon Sep 17 00:00:00 2001 From: Benjamin Barenblat Date: Sat, 13 Feb 2016 22:14:04 -0500 Subject: Save root file descriptor when starting up MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow access to underlying file system by saving a file descriptor to the underlying directory when starting. Close the FD during FUSE’s destroy routine, though it won’t matter much. --- src/utility.cc | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 src/utility.cc (limited to 'src/utility.cc') diff --git a/src/utility.cc b/src/utility.cc new file mode 100644 index 0000000..5ccb58a --- /dev/null +++ b/src/utility.cc @@ -0,0 +1,44 @@ +// Copyright 2016 Benjamin Barenblat +// +// Licensed 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. + +#define _POSIX_C_SOURCE 201502L +#undef _GNU_SOURCE + +#include "utility.h" + +#include + +#include +#include +#include + +#include + +namespace scoville { + +std::string ErrnoText() { + std::vector text(64); + int strerror_result; + while ((strerror_result = strerror_r(errno, text.data(), text.size())) == + ERANGE) { + VLOG(1) << "ErrnoText doubling message size from " << text.size(); + text.resize(text.size() * 2); + } + if (strerror_result != 0) { + return "(could not generate error message)"; + } + return std::string(text.begin(), text.end()); +} + +} // namespace scoville -- cgit v1.2.3