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-rw-r--r--sys/kern/kern_sig.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index 05dd103..cdb5f93 100644
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -658,9 +658,10 @@ kern_sigaction(td, sig, act, oact, flags)
if (!_SIG_VALID(sig))
return (EINVAL);
- if (act != NULL && (act->sa_flags & ~(SA_ONSTACK | SA_RESTART |
- SA_RESETHAND | SA_NOCLDSTOP | SA_NODEFER | SA_NOCLDWAIT |
- SA_SIGINFO)) != 0)
+ if (act != NULL && act->sa_handler != SIG_DFL &&
+ act->sa_handler != SIG_IGN && (act->sa_flags & ~(SA_ONSTACK |
+ SA_RESTART | SA_RESETHAND | SA_NOCLDSTOP | SA_NODEFER |
+ SA_NOCLDWAIT | SA_SIGINFO)) != 0)
return (EINVAL);
PROC_LOCK(p);
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