SHM_RDONLY        243 kern/sysv_shm.c 		    (SCARG(uap, shmflg) & SHM_RDONLY) ? IPC_R : IPC_R|IPC_W);
SHM_RDONLY        255 kern/sysv_shm.c 	if ((SCARG(uap, shmflg) & SHM_RDONLY) == 0)