Conflict between <sys/sysproto.h> & <stdio.h> ... ?

[lucy loo]

I am writing a kernel loadable module to reimplement some system calls. I have included <sys/sysproto.h>, <sys/systm.h>, etc. -- very standard header files for kld implmentation. I also want to do file i/o in this module, therefore I need to include <stdio.h>. But it obviously conflicts with those <sys/...>, and make won't pass. 
Anyone knows how to fix this? 
 
Thanks! 


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