661 	Channel *sync;  in execproc()  local
673 	sync = e->sync;  in execproc()
686 	procexecl(sync, "/bin/rc", "rc", "-c", cmd, 0);  in execproc()
693 	Channel *sync;  in writeproc()  local
701 	sync = a[0];  in writeproc()
715 	sendul(sync, i);  in writeproc()
748 	Channel *sync;  in tcs()  local
803 	sync = chancreate(sizeof(ulong), 0);  in tcs()
804 	if(sync == nil)  in tcs()
814 	e->sync = sync;  in tcs()
816 	recvul(sync);  in tcs()
817 	chanfree(sync);  in tcs()
823 	sync = chancreate(sizeof(ulong), 0);  in tcs()
824 	if(sync == nil)  in tcs()
828 	a[0] = sync;  in tcs()
841 	n = recvul(sync);  in tcs()
846 	chanfree(sync);  in tcs()