Author: kib
Date: Thu Jan 22 09:07:02 2015
New Revision: 277526
URL: https://svnweb.freebsd.org/changeset/base/277526
Log:
MFC r277236:
For sigaction(2), ignore possible garbage in sa_flags for sa_handler
== SIG_DFL or SIG_IGN.
Modified:
stable/10/sys/kern/kern_sig.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/kern/kern_sig.c
==============================================================================
--- stable/10/sys/kern/kern_sig.c Thu Jan 22 09:02:58 2015
(r277525)
+++ stable/10/sys/kern/kern_sig.c Thu Jan 22 09:07:02 2015
(r277526)
@@ -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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