os::posix::device_impl Class Reference

#include <device.h>

Inheritance diagram for os::posix::device_impl:

Public Member Functions
Constructors & Destructor
	device_impl (void)
virtual	~device_impl () override
Public Member Functions
virtual bool	do_is_opened (void) override
virtual int	do_vopen (const char *path, int oflag, std::va_list args)=0
virtual int	do_vioctl (int request, std::va_list args)=0
virtual void	do_sync (void)=0
int	open_count (void)
Public Member Functions
virtual void	do_deallocate (void)
virtual bool	do_is_connected (void)
virtual ssize_t	do_read (void *buf, std::size_t nbyte)=0
virtual ssize_t	do_write (const void *buf, std::size_t nbyte)=0
virtual ssize_t	do_writev (const iovec *iov, int iovcnt)
virtual int	do_vfcntl (int cmd, std::va_list args)
virtual int	do_isatty (void)
virtual int	do_fstat (struct stat *buf)
virtual off_t	do_lseek (off_t offset, int whence)=0
virtual int	do_close (void)=0
off_t	offset (void)
void	offset (off_t offset)

Detailed Description

Definition at line 198 of file device.h.

Constructor & Destructor Documentation

device_impl()

os::posix::device_impl::device_impl

(

void

)

Definition at line 199 of file device.cpp.

    {
#if defined(OS_TRACE_POSIX_IO_DEVICE)
      trace::printf ("device_impl::%s()=%p\n", __func__, this);
#endif
    }

References os::trace::printf().

~device_impl()

os::posix::device_impl::~device_impl ( )

overridevirtual

Definition at line 206 of file device.cpp.

    {
#if defined(OS_TRACE_POSIX_IO_DEVICE)
      trace::printf ("device_impl::%s() @%p\n", __func__, this);
#endif
    }

References os::trace::printf().

Member Function Documentation

do_close()

virtual int os::posix::io_impl::do_close ( void  )

pure virtualinherited

Implemented in os::posix::block_device_partition_impl.

Referenced by os::posix::io::alloc_file_descriptor(), and os::posix::io::close().

do_deallocate()

void os::posix::io_impl::do_deallocate ( void  )

virtualinherited

Definition at line 482 of file io.cpp.

    {
      return;
    }

do_fstat()

int os::posix::io_impl::do_fstat ( struct stat *  buf )

virtualinherited

Definition at line 539 of file io.cpp.

    {
      errno = ENOSYS; // Not implemented
      return -1;
    }

Referenced by os::posix::io::fstat().

do_is_connected()

bool os::posix::io_impl::do_is_connected ( void  )

virtualinherited

Definition at line 496 of file io.cpp.

    {
      return true;
    }

do_is_opened()

bool os::posix::device_impl::do_is_opened ( void  )

overridevirtual

Implements os::posix::io_impl.

Definition at line 216 of file device.cpp.

    {
      return (open_count_ > 0);
    }

do_isatty()

int os::posix::io_impl::do_isatty ( void  )

virtualinherited

Reimplemented in os::posix::tty_impl.

Definition at line 532 of file io.cpp.

    {
      errno = ENOTTY; // By default, it is not a TTY.
      return 0;
    }

Referenced by os::posix::io::isatty().

do_lseek()

virtual off_t os::posix::io_impl::do_lseek ( off_t  offset, int  whence  )

pure virtualinherited

Implemented in os::posix::block_device_impl, and os::posix::char_device_impl.

Referenced by os::posix::io::lseek().

do_read()

virtual ssize_t os::posix::io_impl::do_read ( void *  buf, std::size_t  nbyte  )

pure virtualinherited

Implemented in os::posix::block_device_impl.

Referenced by os::posix::io::read().

do_sync()

virtual void os::posix::device_impl::do_sync ( void  )

pure virtual

Implemented in os::posix::block_device_partition_impl, and os::posix::char_device_impl.

Referenced by os::posix::device::sync().

do_vfcntl()

int os::posix::io_impl::do_vfcntl ( int  cmd, std::va_list  args  )

virtualinherited

Definition at line 525 of file io.cpp.

    {
      errno = ENOSYS; // Not implemented
      return -1;
    }

Referenced by os::posix::io::vfcntl().

do_vioctl()

virtual int os::posix::device_impl::do_vioctl ( int  request, std::va_list  args  )

pure virtual

Implemented in os::posix::block_device_partition_impl.

Referenced by os::posix::device::vioctl(), and os::posix::block_device::vioctl().

do_vopen()

virtual int os::posix::device_impl::do_vopen ( const char *  path, int  oflag, std::va_list  args  )

pure virtual

Implemented in os::posix::block_device_partition_impl.

Referenced by os::posix::device::vopen().

do_write()

virtual ssize_t os::posix::io_impl::do_write ( const void *  buf, std::size_t  nbyte  )

pure virtualinherited

Implemented in os::posix::block_device_impl.

Referenced by os::posix::io_impl::do_writev(), and os::posix::io::write().

do_writev()

ssize_t os::posix::io_impl::do_writev ( const iovec *  iov, int  iovcnt  )

virtualinherited

Definition at line 502 of file io.cpp.

    {
      ssize_t total = 0;
 
#pragma GCC diagnostic push
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
#endif
      const /* struct */ iovec* p = iov;
      for (int i = 0; i < iovcnt; ++i, ++p)
        {
          ssize_t ret = do_write (p->iov_base, p->iov_len);
          if (ret < 0)
            {
              return ret;
            }
          total += ret;
        }
#pragma GCC diagnostic pop
      return total;
    }

References os::posix::io_impl::do_write(), iovec::iov_base, and iovec::iov_len.

Referenced by os::posix::io::writev().

offset() [1/2]

void os::posix::io_impl::offset ( off_t  offset )

inlineinherited

Definition at line 478 of file io.h.

    {
      offset_ = offset;
    }

References os::posix::io_impl::offset().

offset() [2/2]

off_t os::posix::io_impl::offset ( void  )

inlineinherited

Definition at line 472 of file io.h.

    {
      return offset_;
    }

Referenced by os::posix::block_device_partition_impl::configure(), os::posix::block_device_impl::do_lseek(), and os::posix::io_impl::offset().

open_count()

int os::posix::device_impl::open_count ( void  )

inline

Definition at line 324 of file device.h.

    {
      return open_count_;
    }

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The documentation for this class was generated from the following files:

• device.h
• device.cpp