Create a directory while enforcing quota
int Ns_MkdirWithQuota( char *hServer, char *dirname, int mkdirmode )
This function performs a mkdir (like the libc mkdir function) while enforcing the quota set by the QuotaSize configuration parameter. It returns -1 for an error. NS_QUOTA is returned if the quota is exceeded. If a directory is created that causes the quota to be exceeded, the directory is removed.