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#include <sys/types.h> #include <sys/ipc.h> #include <sys/sem.h> #if __STDC__ int semop(int semid, struct sembuf *sops, unsigned nsops) #else int semop(semid, sops, nsops) int semid; struct sembuf *sops; unsigned nsops; #endif { return (semsys(2, semid, sops, nsops, 0)); }