static int
efab_signal_handler_type(int sig, __sighandler_t user_handler)
{
if( user_handler == SIG_IGN )
return OO_SIGHANGLER_IGN_BIT;
else if( user_handler != SIG_DFL )
return OO_SIGHANGLER_USER;
else if( sig_kernel_stop(sig) )
return OO_SIGHANGLER_STOP;
else if( sig_kernel_coredump(sig) )
return OO_SIGHANGLER_CORE;
else if( sig_kernel_ignore(sig) )
return OO_SIGHANGLER_IGN_BIT;
else
return OO_SIGHANGLER_TERM;
}
static struct pid *good_sigevent(sigevent_t * event)
{
struct task_struct *rtn = current->group_leader;
int sig = event->sigev_signo;
if ((event->sigev_notify & SIGEV_THREAD_ID ) &&
(!(rtn = find_task_by_vpid(event->sigev_notify_thread_id)) ||
!same_thread_group(rtn, current) ||
(event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_SIGNAL))
return NULL;
if (((event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) &&
(sig <= 0 || sig > SIGRTMAX || sig_kernel_only(sig) ||
sig_kernel_coredump(sig)))
return NULL;
return task_pid(rtn);
}
