ref: 1b51b30c2d7d831f8e8ef83b254fe6cd2052ff89
dir: /include/bits/openbsd/amd64/arch/sigaction.h/
typedef unsigned int sigset_t; typedef struct siginfo siginfo_t; struct sigaction { union { void (*__sa_handler)(int); void (*__sa_sigaction)(int, siginfo_t *, void *); } __sigaction_u; sigset_t sa_mask; int sa_flags; }; #define sa_handler __sigaction_u.__sa_handler #define sa_sigaction __sigaction_u.__sa_sigaction