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; }