C++ (Cpp) rtems_filesystem_location_add_to_mt_entry示例

示例#1

文件： sup_fs_location.c 项目： medivhc/rtems

rtems_filesystem_location_info_t *rtems_filesystem_location_copy(
  rtems_filesystem_location_info_t *dst,
  const rtems_filesystem_location_info_t *src
)
{
  dst->node_access = src->node_access;
  dst->node_access_2 = src->node_access_2;
  dst->handlers = src->handlers;
  dst->mt_entry = src->mt_entry;
  rtems_filesystem_location_add_to_mt_entry(dst);

  return dst;
}

示例#2

/*
 * Create an RTEMS file descriptor for a socket
 */
static int
rtems_bsdnet_makeFdForSocket (void *so)
{
  rtems_libio_t *iop;
  int fd;

  iop = rtems_libio_allocate();
  if (iop == 0)
      rtems_set_errno_and_return_minus_one( ENFILE );

  fd = iop - rtems_libio_iops;
  iop->flags |= LIBIO_FLAGS_WRITE | LIBIO_FLAGS_READ;
  iop->data0 = fd;
  iop->data1 = so;
  iop->pathinfo.handlers = &socket_handlers;
  iop->pathinfo.ops = &rtems_filesystem_operations_default;
  iop->pathinfo.mt_entry = &rtems_filesystem_null_mt_entry;
  rtems_filesystem_location_add_to_mt_entry(&iop->pathinfo);
  return fd;
}

示例#3

文件： shmopen.c 项目： gedare/rtems

int shm_open( const char *name, int oflag, mode_t mode )
{
  int err = 0;
  int fd;
  rtems_libio_t *iop;
  POSIX_Shm_Control *shm;
  size_t len;
  Objects_Get_by_name_error obj_err;
  unsigned int flags;

  if ( shm_check_oflag( oflag ) != 0 ) {
    return -1;
  }

  iop = rtems_libio_allocate();
  if ( iop == NULL ) {
    rtems_set_errno_and_return_minus_one( EMFILE );
  }

  _Objects_Allocator_lock();
  shm = _POSIX_Shm_Get_by_name( name, &len, &obj_err );

  if ( shm == NULL ) {
    switch ( obj_err ) {
      case OBJECTS_GET_BY_NAME_INVALID_NAME:
        err = EINVAL;
        break;

      case OBJECTS_GET_BY_NAME_NAME_TOO_LONG:
        err = ENAMETOOLONG;
        break;

      case OBJECTS_GET_BY_NAME_NO_OBJECT:
      default:
        shm = shm_allocate(name, len, oflag, mode, &err);
        break;
    }
  } else { /* shm exists */
    if ( ( oflag & ( O_EXCL | O_CREAT ) ) == ( O_EXCL | O_CREAT ) ) {
      /* Request to create failed. */
      err = EEXIST;
    } else if ( !shm_access_ok( shm, oflag ) ) {
      err = EACCES;
    } else {
      ++shm->reference_count;
    }
  }
  _Objects_Allocator_unlock();
  if ( err != 0 ) {
    rtems_libio_free( iop );
    rtems_set_errno_and_return_minus_one( err );
  }

  if ( oflag & O_TRUNC ) {
    err = shm_ftruncate( iop, 0 );
    (void) err; /* ignore truncate error */
  }

  fd = rtems_libio_iop_to_descriptor( iop );
  iop->data0 = fd;
  iop->data1 = shm;
  iop->pathinfo.node_access = shm;
  iop->pathinfo.handlers = &shm_handlers;
  iop->pathinfo.mt_entry = &rtems_filesystem_null_mt_entry;
  rtems_filesystem_location_add_to_mt_entry( &iop->pathinfo );

  flags = LIBIO_FLAGS_CLOSE_ON_EXEC;
  if ( oflag & O_RDONLY ) {
    flags |= LIBIO_FLAGS_READ;
  } else {
    flags |= LIBIO_FLAGS_READ_WRITE;
  }

  rtems_libio_iop_flags_initialize( iop, flags );

  return fd;
}