73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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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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* Copyright 2016 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __CRUFT_UTIL_POSIX_FD_HPP
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#define __CRUFT_UTIL_POSIX_FD_HPP
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#include <string>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <experimental/filesystem>
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namespace util::posix {
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///------------------------------------------------------------------------
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/// A simple RAII wrapper for file descriptors
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class fd {
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public:
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///////////////////////////////////////////////////////////////////////
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fd (const std::experimental::filesystem::path &path, int flags);
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fd (const std::experimental::filesystem::path &path, int flags, mode_t);
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fd (fd &&);
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// The int constructor steals the fd. So don't pass in something that
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// you don't want closed at destruct time. This should really only be
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// used when interfacing with results of syscalls that we don't wrap.
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explicit fd (int);
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// copy constructors are removed in favour of explicit calls to dup.
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// This should reduce unexpected or expensive copies as much as
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// possible; one should not be doing this unless it is absolutely
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// required.
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fd (const fd&) = delete;
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fd dup (void) const;
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static fd dup (int);
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~fd ();
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///////////////////////////////////////////////////////////////////////
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struct ::stat stat (void) const;
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//---------------------------------------------------------------------
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ssize_t read ( void *buf, size_t count);
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ssize_t write (const void *buf, size_t count);
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//---------------------------------------------------------------------
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off_t lseek (off_t offset, int whence);
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///////////////////////////////////////////////////////////////////////
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operator int (void) const;
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private:
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int m_fd;
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};
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}
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#endif
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