ref: 62f0e08bbf82d768a2ef87af44b67b5547558d2f
dir: /include/bits/dragonfly/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