ECN Forum Forums Code Related Discussion NEC & other Code issues 30 amp RV outlet on GFI??

I've got a RV garage for a homeowner that will have 9 regular 15 amp 120 volt outlets and 1 (30 amp)120 volt RV outlet. There has been a 30 amp circuit wired on his new house and brought out at the back of his house to feed this garage. I will have to trench over to the building with the feed.
By code I can't put a 15 or 20 amp outlet on a 30 amp breaker. If I pull the circuits into a small breaker panel and break it down to 20 amp circuit for the regular outlets and a 30 amp breaker for the RV outlet, I can't use the regular 15 or 20 amp GFCI recpt. to protect it. Since I don't know of a 30 amp GFCI outlet, I guess the only way is to get a 30 amp. GFCI breaker in the panel to protect it. Am I right??
Thanks...