1 #include <u.h> 2 #include <libc.h> 3 #include <ctype.h> 4 5 /* 6 * force a connection to hangup 7 */ 8 int hangup(int ctl)9 hangup(int ctl) 10 { 11 return write(ctl, "hangup", sizeof("hangup")-1) != sizeof("hangup")-1; 12 } 13