I am implementing a resource manager for my mount point on the file system.

As part of that, I have specified a callout for mknod() as follows:

resmgr_connect_funcs_t  connect_funcs;
connect_funcs.mknod = io_mknod;

and the mknod callout is defined as:
int io_mknod(resmgr_context_t *ctp, io_mknod_t *msg, RESMGR_HANDLE_T *handle, void *reserved);

in this callout, io_mknod() how do I differentiate between a client call to mknod() and a client call to mkdir().

Empirical observations led me to assume that when the mode value is 16384, the callout was invoked for a client call to 
mknod() and when the mode value is 16877, the callout was invoked for a client call to mkdir(). So my code becomes 
something like this:

int io_mknod(resmgr_context_t *ctp, io_mknod_t *msg, RESMGR_HANDLE_T *handle, void *reserved)
{
if(  msg->connect.mode == 16877)
     // we got called for mkdir()
else
    // we got called for mknod()
}

Is there any other way to differentiate? I have not been able to reconcile these values (16384 or 16877) to any ORing of
 constants in the header files.

Thanks,
ms