rt_sigaction(2) -- Linux man page
NAMErt_sigaction - Alter an action taken by a process
- long sys_rt_sigaction (int sig, const struct sigaction *act, struct sigaction *oact, size_t sigsetsize);
rt_sigaction alters an action taken by a process on receipt of a particular signal. The action is specified by the sigaction structure. The previous action on the signal is saved in oact. sigsetsize should indicate the size of a sigset_t type.
- sigsetsize was not equivalent to the size of a sigset_t type.
- An invalid act or oact value was specified.