semget() always fails

	Hello,

	I have written a library that emulates Poxis semaphores with SystemV 
ones. To do that, I have used semget() function that always fails.

Configuration : eCS 2.0 + EMX 0.9d, gcc-4.4.4 (and all GNU tools).

Source code :

#ifndef UNION_SEMUN
union semun
{
     int                 val;
     struct semid_ds     *buf;
     unsigned short      *array;
     struct seminfo      *__buf;
};
#endif

int
sem_init_SysV(sem_t *semaphore, int shared, unsigned int valeur)
{
     int             ios;

     union semun     argument;

     if (shared != 0)
     {
         return(ENOSYS);
     }