Differential D19058 Diff 62564 head/sys/kern/kern_sig.c

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head/sys/kern/kern_sig.c

Show First 20 Lines • Show All 980 Lines • ▼ Show 20 Lines	execsigs(struct proc *p)
/*		/*
* Reset caught signals. Held signals remain held		* Reset caught signals. Held signals remain held
* through td_sigmask (unless they were caught,		* through td_sigmask (unless they were caught,
* and are now ignored by default).		* and are now ignored by default).
*/		*/
PROC_LOCK_ASSERT(p, MA_OWNED);		PROC_LOCK_ASSERT(p, MA_OWNED);
ps = p->p_sigacts;		ps = p->p_sigacts;
mtx_lock(&ps->ps_mtx);		mtx_lock(&ps->ps_mtx);
while (SIGNOTEMPTY(ps->ps_sigcatch)) {		sig_drop_caught(p);
sig = sig_ffs(&ps->ps_sigcatch);
sigdflt(ps, sig);
if ((sigprop(sig) & SIGPROP_IGNORE) != 0)
sigqueue_delete_proc(p, sig);
}

/*		/*
* As CloudABI processes cannot modify signal handlers, fully		* As CloudABI processes cannot modify signal handlers, fully
* reset all signals to their default behavior. Do ignore		* reset all signals to their default behavior. Do ignore
* SIGPIPE, as it would otherwise be impossible to recover from		* SIGPIPE, as it would otherwise be impossible to recover from
* writes to broken pipes and sockets.		* writes to broken pipes and sockets.
*/		*/
if (SV_PROC_ABI(p) == SV_ABI_CLOUDABI) {		if (SV_PROC_ABI(p) == SV_ABI_CLOUDABI) {
▲ Show 20 Lines • Show All 2,848 Lines • ▼ Show 20 Lines	sigacts_copy(struct sigacts dest, struct sigacts src)
mtx_unlock(&src->ps_mtx);		mtx_unlock(&src->ps_mtx);
}		}

int		int
sigacts_shared(struct sigacts *ps)		sigacts_shared(struct sigacts *ps)
{		{

return (ps->ps_refcnt > 1);		return (ps->ps_refcnt > 1);
		}

		void
		sig_drop_caught(struct proc *p)
		{
		int sig;
		struct sigacts *ps;

		ps = p->p_sigacts;
		PROC_LOCK_ASSERT(p, MA_OWNED);
		mtx_assert(&ps->ps_mtx, MA_OWNED);
		while (SIGNOTEMPTY(ps->ps_sigcatch)) {
		sig = sig_ffs(&ps->ps_sigcatch);
		sigdflt(ps, sig);
		if ((sigprop(sig) & SIGPROP_IGNORE) != 0)
		sigqueue_delete_proc(p, sig);
		}
}		}