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authorchristos <christos@NetBSD.org>2016-06-03 23:57:37 +0000
committerchristos <christos@NetBSD.org>2016-06-03 23:57:37 +0000
commitff90af791e7b6437dbbb2fc66c1bf4502af1d232 (patch)
tree5375181530a306b7240bc6ed10b40377b4329eed /lib/libc
parent3a0809361d375575fdb7b6f4ffe9928d0680c070 (diff)
Add bsd_signal as required by POSIX (from GSoC 2016, Charles Cui)
Diffstat (limited to 'lib/libc')
-rw-r--r--lib/libc/gen/signal.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/lib/libc/gen/signal.c b/lib/libc/gen/signal.c
index cc3cce2c5a4..67109af088c 100644
--- a/lib/libc/gen/signal.c
+++ b/lib/libc/gen/signal.c
@@ -1,4 +1,4 @@
-/* $NetBSD: signal.c,v 1.13 2012/06/25 22:32:44 abs Exp $ */
+/* $NetBSD: signal.c,v 1.14 2016/06/03 23:57:37 christos Exp $ */
/*
* Copyright (c) 1985, 1989, 1993
@@ -34,7 +34,7 @@
#if 0
static char sccsid[] = "@(#)signal.c 8.1 (Berkeley) 6/4/93";
#else
-__RCSID("$NetBSD: signal.c,v 1.13 2012/06/25 22:32:44 abs Exp $");
+__RCSID("$NetBSD: signal.c,v 1.14 2016/06/03 23:57:37 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
@@ -64,3 +64,19 @@ signal(int s, sig_t a)
return (SIG_ERR);
return (osa.sa_handler);
}
+
+void
+(*bsd_signal(int sig, void (*func)(int)))(int)
+{
+ struct sigaction act, oact;
+
+ act.sa_handler = func;
+ act.sa_flags = SA_RESTART;
+
+ sigemptyset(&act.sa_mask);
+ sigaddset(&act.sa_mask, sig);
+ if (sigaction(sig, &act, &oact) < 0)
+ return (SIG_ERR);
+
+ return (oact.sa_handler);
+}