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#include <sys/types.h> #include <sys/ipc.h> #include <sys/msg.h> #if __STDC__ int msgctl(int msqid, int cmd, struct msqid_ds *buf) #else int msgctl(msqid,cmd,buf) int msqid; int cmd; caddr_t buf; #endif { return (msgsys(0, msqid, cmd, buf)); }