/* semcount.c - semcount */

#include 

/*------------------------------------------------------------------------
 *  semcount  -  Return the count of a semaphore (because any integer is
 *                 possible, return of SYSERR may be ambiguous)
 *------------------------------------------------------------------------
 */
syscall semcount(
          sid32         semid           /* ID of semaphore to use       */
        )
{
        intmask mask;                   /* Saved interrupt mask         */
        int32   count;                  /* Current sempahore count      */

        mask = disable();
        
        if (isbadsem(semid) || semtab[semid].sstate == S_FREE) {
                restore(mask);
                return SYSERR;
        }
        count = semtab[semid].scount;
        restore(mask);
        return count;
}