/*
* If there are processes sleeping on this descriptor, wake them up.
*/
static __inline void
bpf_wakeup(struct bpf_d *d)
{
wakeup((caddr_t)d);
if (d->bd_async && d->bd_sig)
csignal(d->bd_pgid, d->bd_sig,
d->bd_siguid, d->bd_sigeuid);
selwakeup(&d->bd_sel);
KNOTE(&d->bd_sel.si_note, 0);
}
/*
* If there are processes sleeping on this descriptor, wake them up.
*/
void
bpf_wakeup(struct bpf_d *d)
{
wakeup((caddr_t)d);
if (d->bd_async && d->bd_sig)
csignal(d->bd_pgid, d->bd_sig,
d->bd_siguid, d->bd_sigeuid);
selwakeup(&d->bd_sel);
/* XXX */
d->bd_sel.si_selpid = 0;
}
/*
* Wakeup processes waiting on a socket buffer.
* Do asynchronous notification via SIGIO
* if the socket has the SS_ASYNC flag set.
*/
void
sowakeup(struct socket *so, struct sockbuf *sb)
{
int s = splsoftnet();
selwakeup(&sb->sb_sel);
sb->sb_flagsintr &= ~SB_SEL;
if (sb->sb_flagsintr & SB_WAIT) {
sb->sb_flagsintr &= ~SB_WAIT;
wakeup(&sb->sb_cc);
}
splx(s);
if (so->so_state & SS_ASYNC)
csignal(so->so_pgid, SIGIO, so->so_siguid, so->so_sigeuid);
}
void base_error_init(void)
{
struct sigaction act;
int sig, j;
struct sigaction ToSuspend;
struct sigaction ToContinue;
/* Initialise Suspend Signal (CTRL-Z) */
ToSuspend.sa_handler = suspendProcess;
ToSuspend.sa_flags = 0;
sigemptyset(&ToSuspend.sa_mask);
sigaction(SIGTSTP, &ToSuspend, NULL);
/* Initialise Continue Signal (fg) */
ToContinue.sa_handler = continueProcess;
ToContinue.sa_flags = 0;
sigemptyset(&ToContinue.sa_mask);
sigaction(SIGCONT, &ToContinue, NULL);
/* Signal handlers */
csignal();
memset(&act, 0, sizeof(act));
act.sa_sigaction = sig_fatal;
act.sa_flags = SA_SIGINFO;
#ifdef SA_ONESHOT
act.sa_flags |= SA_ONESHOT;
#else
act.sa_flags |= SA_RESETHAND;
#endif
sigemptyset(&act.sa_mask);
int signals[] =
{
#ifdef SIGABRT
SIGABRT,
#endif
#ifdef SIGBUS
SIGBUS,
#endif
#ifdef SIGFPE
SIGFPE,
#endif
#ifdef SIGFPE2
SIGFPE,
#endif
#ifdef SIGILL
SIGILL,
#endif
#ifdef SIGSEGV
SIGSEGV,
#endif
#ifdef SIGPOLL
SIGPOLL,
#endif
-1
};
for (j = 0; signals[j] != -1; ++j)
{
if (0 != sigaction(signals[j], &act, NULL))
{
fprintf(stderr, "Could not set handler for signal %d\n", signals[j]);
}
}
}
