[src/trunk]: src Add bsd_signal as required by POSIX (from GSoC 2016, Charles...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a70c586fd905
branches:  trunk
changeset: 345656:a70c586fd905
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Jun 03 23:57:37 2016 +0000

description:
Add bsd_signal as required by POSIX (from GSoC 2016, Charles Cui)

diffstat:

 lib/libc/gen/signal.c |  20 ++++++++++++++++++--
 sys/sys/signal.h      |   3 ++-
 2 files changed, 20 insertions(+), 3 deletions(-)

diffs (55 lines):

diff -r 2fa28a5eb0b0 -r a70c586fd905 lib/libc/gen/signal.c
--- a/lib/libc/gen/signal.c     Fri Jun 03 21:55:50 2016 +0000
+++ b/lib/libc/gen/signal.c     Fri Jun 03 23:57:37 2016 +0000
@@ -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 @@
                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);
+}
diff -r 2fa28a5eb0b0 -r a70c586fd905 sys/sys/signal.h
--- a/sys/sys/signal.h  Fri Jun 03 21:55:50 2016 +0000
+++ b/sys/sys/signal.h  Fri Jun 03 23:57:37 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: signal.h,v 1.67 2011/01/10 13:56:44 christos Exp $     */
+/*     $NetBSD: signal.h,v 1.68 2016/06/03 23:57:37 christos Exp $     */
 
 /*
  * Copyright (c) 1982, 1986, 1989, 1991, 1993
@@ -235,6 +235,7 @@
  */
 __BEGIN_DECLS
 void   (*signal(int, void (*)(int)))(int);
+void   (*bsd_signal(int, void (*)(int)))(int);
 #if (_POSIX_C_SOURCE - 0) >= 200112L || defined(_NETBSD_SOURCE)
 int    sigqueue(pid_t, int, const union sigval);
 #endif