9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
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signal.c (260B)

      1 #include <stddef.h>
      2 #include <signal.h>
      3 #include <sys.h>
      4 #undef signal
      5 
      6 void
      7 (*signal(int signum, void (*func)(int)))(int)
      8 {
      9 	struct sigaction sa = {
     10 		.sa_handler = func,
     11 	};
     12 
     13 	if (_sigaction(signum, &sa, &sa) < 0)
     14 		return SIG_ERR;
     15 
     16 	return sa.sa_handler;
     17 }