fileid_lock
lock = fileid_lock(fileid, puffs_cc_getcc(pu));
lock = fileid_lock(fileid, puffs_cc_getcc(pu));
lock = fileid_lock(fileid, puffs_cc_getcc(pu));
struct fileid_lock_handle *fileid_lock(fileid_t, struct puffs_cc *);