SHFL_CF_ACCESS_READWRITE
params.create_flags = SHFL_CF_ACT_CREATE_IF_NEW | SHFL_CF_ACCESS_READWRITE;
sf_handle = vboxsf_create_sf_handle(d_inode(dentry), handle, SHFL_CF_ACCESS_READWRITE);
h->access_flags == SHFL_CF_ACCESS_READWRITE) {
access_flags |= SHFL_CF_ACCESS_READWRITE;