136 lines
3.0 KiB
C++
136 lines
3.0 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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#include "./fd.hpp"
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#include "../except.hpp"
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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using util::posix::fd;
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///////////////////////////////////////////////////////////////////////////////
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fd::fd (const std::experimental::filesystem::path &path, int flags):
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fd (path, flags, 0666)
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{ ; }
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//-----------------------------------------------------------------------------
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fd::fd (const std::experimental::filesystem::path &path, int flags, mode_t mode):
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m_fd (::open (path.c_str (), flags, mode))
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{
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if (m_fd < 0)
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errno_error::throw_code ();
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}
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///////////////////////////////////////////////////////////////////////////////
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fd::fd (fd &&rhs):
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m_fd (-1)
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{
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std::swap (m_fd, rhs.m_fd);
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}
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///////////////////////////////////////////////////////////////////////////////
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fd::fd (int _fd):
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m_fd (_fd)
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{ ; }
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///////////////////////////////////////////////////////////////////////////////
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fd
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fd::dup (void) const
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{
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return dup (m_fd);
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}
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//-----------------------------------------------------------------------------
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fd
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fd::dup (int _fd)
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{
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auto res = ::dup (_fd);
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if (res < 0)
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errno_error::throw_code ();
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return fd (res);
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}
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///////////////////////////////////////////////////////////////////////////////
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fd::~fd ()
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{
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if (m_fd < 0)
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return;
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if (close (m_fd))
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errno_error::throw_code ();
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}
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///////////////////////////////////////////////////////////////////////////////
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struct ::stat
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fd::stat (void) const
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{
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struct stat buf;
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if (fstat (m_fd, &buf))
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errno_error::throw_code ();
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return buf;
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}
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///////////////////////////////////////////////////////////////////////////////
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ssize_t
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fd::read (void *buffer, size_t count)
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{
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auto res = ::read (m_fd, buffer, count);
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if (res == -1)
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errno_error::throw_code ();
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return res;
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}
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//-----------------------------------------------------------------------------
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ssize_t
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fd::write (const void *buffer, size_t count)
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{
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auto res = ::write (m_fd, buffer, count);
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if (res == -1)
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errno_error::throw_code ();
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return res;
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}
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///////////////////////////////////////////////////////////////////////////////
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off_t
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fd::lseek (off_t offset, int whence)
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{
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auto res = ::lseek (m_fd, offset, whence);
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if (res == -1)
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errno_error::throw_code ();
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return res;
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}
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///////////////////////////////////////////////////////////////////////////////
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fd::operator int (void) const
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{
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return m_fd;
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}
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