[master] Set signal action to ingore for SIGPIPE

    Merges in rt32222.

1 files changed, 19 insertions, 0 deletions

diff --git a/omapip/isclib.c b/omapip/isclib.c
index 3e5e1c2b..13f0d3eb 100644
--- a/omapip/isclib.c
+++ b/omapip/isclib.c
@@ -120,6 +120,20 @@ isclib_cleanup(void)
 	return;
 }
 
+/* Installs a handler for a signal using sigaction */
+static void
+handle_signal(int sig, void (*handler)(int)) {
+	struct sigaction sa;
+
+	memset(&sa, 0, sizeof(sa));
+	sa.sa_handler = handler;
+	sigfillset(&sa.sa_mask);
+	if (sigaction(sig, &sa, NULL) != 0) {
+		log_debug("handle_signal() failed for signal %d error: %s",
+                          sig, strerror(errno));
+	}
+}
+
 isc_result_t
 dhcp_context_create(int flags,
 		    struct in_addr  *local4,
@@ -176,6 +190,11 @@ dhcp_context_create(int flags,
 			return (result);
 		dhcp_gbl_ctx.actx_started = ISC_TRUE;
 
+		/* Not all OSs support suppressing SIGPIPE through socket
+		 * options, so set the sigal action to be ignore.  This allows
+		 * broken connections to fail gracefully with EPIPE on writes */
+		handle_signal(SIGPIPE, SIG_IGN);
+
 		result = isc_taskmgr_createinctx(dhcp_gbl_ctx.mctx,
 						 dhcp_gbl_ctx.actx,
 						 1, 0,