src/signal/signal.c

   1 #include <signal.h>
   2 #include "syscall.h"
   3
   4 void (*signal(int sig, void (*func)(int)))(int)
   5 {
   6         struct sigaction sa_old, sa = { .sa_handler = func, .sa_flags = SA_RESTART };
   7         if (__sigaction(sig, &sa, &sa_old) < 0)
   8                 return SIG_ERR;
   9         return sa_old.sa_handler;
  10 }
  11
  12 weak_alias(signal, bsd_signal);
  13 weak_alias(signal, __sysv_signal);