ref: 34c14097cb90fb2deccc3f2ab41b79ca3d7a33d2
dir: /src/libc/arch/posix/signal.c/
#include <stddef.h>
#include <signal.h>
#include <sys.h>
#undef signal
void
(*signal(int signum, void (*func)(int)))(int)
{
struct sigaction sa = {
.sa_handler = func,
};
if (_sigaction(signum, &sa, &sa) < 0)
return SIG_ERR;
return sa.sa_handler;
}