int device_open(
  rtems_libio_t *iop,
  const char    *pathname,
  uint32_t       flag,
  uint32_t       mode
)
{
  rtems_libio_open_close_args_t  args;
  rtems_status_code              status;
  IMFS_jnode_t                  *the_jnode;

  the_jnode  = iop->file_info;

  args.iop   = iop;
  args.flags = iop->flags;
  args.mode  = mode;

  status = rtems_io_open(
    the_jnode->info.device.major,
    the_jnode->info.device.minor,
    (void *) &args
  );
  if ( status )
    return rtems_deviceio_errno(status);

  return 0;
}
static ssize_t
rtems_rfs_rtems_device_write (rtems_libio_t* iop,
                              const void*    buffer,
                              size_t         count)
{
  rtems_libio_rw_args_t args;
  rtems_status_code     status;
  int                   major;
  int                   minor;

  major = (int) iop->data0;
  minor = (intptr_t) iop->data1;

  args.iop         = iop;
  args.offset      = iop->offset;
  args.buffer      = (void *) buffer;
  args.count       = count;
  args.flags       = iop->flags;
  args.bytes_moved = 0;

  status = rtems_io_write (major, minor, (void *) &args);
  if (status)
    return rtems_deviceio_errno (status);

  return (ssize_t) args.bytes_moved;
}
int device_ioctl(
  rtems_libio_t *iop,
  uint32_t       command,
  void          *buffer
)
{
  rtems_libio_ioctl_args_t  args;
  rtems_status_code         status;
  IMFS_jnode_t             *the_jnode;

  args.iop     = iop;
  args.command = command;
  args.buffer  = buffer;

  the_jnode = iop->file_info;

  status = rtems_io_control(
    the_jnode->info.device.major,
    the_jnode->info.device.minor,
    (void *) &args
  );

  if ( status )
    return rtems_deviceio_errno(status);

  return args.ioctl_return;
}
ssize_t device_write(
  rtems_libio_t *iop,
  const void    *buffer,
  size_t         count
)
{
  rtems_libio_rw_args_t   args;
  rtems_status_code       status;
  IMFS_jnode_t           *the_jnode;

  the_jnode = iop->file_info;

  args.iop         = iop;
  args.offset      = iop->offset;
  args.buffer      = (void *) buffer;
  args.count       = count;
  args.flags       = iop->flags;
  args.bytes_moved = 0;

  status = rtems_io_write(
    the_jnode->info.device.major,
    the_jnode->info.device.minor,
    (void *) &args
  );

  if ( status )
    return rtems_deviceio_errno(status);

  return (ssize_t) args.bytes_moved;
}
int devFS_ioctl(
  rtems_libio_t *iop,
  uint32_t       command,
  void          *buffer
)
{
  rtems_libio_ioctl_args_t  args;
  rtems_status_code         status;
  rtems_device_name_t      *np;

  np           = (rtems_device_name_t *)iop->file_info;

  args.iop     = iop;
  args.command = command;
  args.buffer  = buffer;

  status = rtems_io_control(
    np->major,
    np->minor,
    (void *) &args
  );

  if ( status )
    return rtems_deviceio_errno(status);

  return args.ioctl_return;
}
/**
 * This handler maps an open() operation onto rtems_io_open().
 *
 * @param iop
 * @param pathname
 * @param flag
 * @param mode
 * @return int
 */
static int
rtems_rfs_rtems_device_open ( rtems_libio_t *iop,
                              const char    *pathname,
                              uint32_t       flag,
                              uint32_t       mode)
{
  rtems_libio_open_close_args_t args;
  rtems_rfs_file_system*        fs = rtems_rfs_rtems_pathloc_dev (&iop->pathinfo);
  rtems_rfs_ino                 ino = rtems_rfs_rtems_get_iop_ino (iop);
  rtems_rfs_inode_handle        inode;
  int                           major;
  int                           minor;
  rtems_status_code             status;
  int                           rc;
  
  rtems_rfs_rtems_lock (fs);
  
  rc = rtems_rfs_inode_open (fs, ino, &inode, true);
  if (rc > 0)
  {
    rtems_rfs_rtems_unlock (fs);
    return rtems_rfs_rtems_error ("device_open: opening inode", rc);
  }

  major = rtems_rfs_inode_get_block (&inode, 0);
  minor = rtems_rfs_inode_get_block (&inode, 1);

  rc = rtems_rfs_inode_close (fs, &inode);
  if (rc > 0)
  {
    rtems_rfs_rtems_unlock (fs);
    return rtems_rfs_rtems_error ("device_open: closing inode", rc);
  }

  rtems_rfs_rtems_unlock (fs);
  
  iop->data0 = major;
  iop->data1 = (void*)((intptr_t) minor);
  
  args.iop   = iop;
  args.flags = iop->flags;
  args.mode  = mode;

  status = rtems_io_open (major, minor, (void *) &args);
  if (status)
    return rtems_deviceio_errno(status);

  return 0;
}
static int
rtems_rfs_rtems_device_close (rtems_libio_t* iop)
{
  rtems_libio_open_close_args_t args;
  rtems_status_code             status;
  int                           major;
  int                           minor;

  major = (int) iop->data0;
  minor = (intptr_t) iop->data1;

  args.iop   = iop;
  args.flags = 0;
  args.mode  = 0;

  status = rtems_io_close (major, minor, (void *) &args);
  if (status)
    return rtems_deviceio_errno (status);

  return 0;
}
static int
rtems_rfs_rtems_device_ioctl (rtems_libio_t* iop,
                              uint32_t       command,
                              void*          buffer)
{
  rtems_libio_ioctl_args_t args;
  rtems_status_code        status;
  int                      major;
  int                      minor;

  major = (int) iop->data0;
  minor = (intptr_t) iop->data1;

  args.iop     = iop;
  args.command = command;
  args.buffer  = buffer;

  status = rtems_io_control (major, minor, (void *) &args);
  if (status)
    return rtems_deviceio_errno (status);

  return args.ioctl_return;
}
Пример #9
0
int devFS_close(
  rtems_libio_t *iop
)
{
  rtems_libio_open_close_args_t  args;
  rtems_status_code              status;
  rtems_device_name_t           *np;

  np         = (rtems_device_name_t *)iop->file_info;

  args.iop   = iop;
  args.flags = 0;
  args.mode  = 0;

  status = rtems_io_close(
    np->major,
    np->minor,
    (void *) &args
  );
  if ( status ) {
    return rtems_deviceio_errno(status);
  }
  return 0;
}
int device_close(
  rtems_libio_t *iop
)
{
  rtems_libio_open_close_args_t  args;
  rtems_status_code              status;
  IMFS_jnode_t                  *the_jnode;

  the_jnode = iop->file_info;

  args.iop   = iop;
  args.flags = 0;
  args.mode  = 0;

  status = rtems_io_close(
    the_jnode->info.device.major,
    the_jnode->info.device.minor,
    (void *) &args
  );
  if ( status ) {
    return rtems_deviceio_errno(status);
  }
  return 0;
}