From: Shawn Routhier <sar@isc.org>
Date: Thu, 18 Nov 2010 19:47:36 +0000 (+0000)
Subject: Ignore sigpipe if possible.  22269
X-Git-Tag: v4_3_0a1~234
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3004babab17a9388f603963cdf1d0577536c7c1a;p=thirdparty%2Fdhcp.git

Ignore sigpipe if possible.  22269
---

diff --git a/RELNOTES b/RELNOTES
index b2b9d935a..cc68e05e0 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -138,6 +138,13 @@ work on other platforms. Please report any problems and suggested fixes to
   This fixes a bug where 'dhclient' would have shared library dependencies
   on '/usr/lib'.  [ISC-Bugs #21967]
 
+- Handle pipe failures more gracefully.  Some OSes pass a SIGPIPE
+  signal to a process and will kill the process if the signal isn't
+  caught.  This patch adds code to turn off the SIGPIPE signal via
+  a setsockopt() call.  The signal is already being ignored as part
+  of the ISC library.  [ISC-Bugs #22269]
+
+
 			Changes since 4.2.0b2
 
 - Add declaration for variable in debug code in alloc.c.  [ISC-Bugs #21472]
diff --git a/omapip/connection.c b/omapip/connection.c
index ffbb04372..4948070a9 100644
--- a/omapip/connection.c
+++ b/omapip/connection.c
@@ -208,6 +208,19 @@ isc_result_t omapi_connect_list (omapi_object_t *c,
 			return ISC_R_UNEXPECTED;
 		}
 
+#ifdef SO_NOSIGPIPE
+		/*
+		 * If available stop the OS from killing our
+		 * program on a SIGPIPE failure
+		 */
+		flag = 1;
+		if (setsockopt(obj->socket, SOL_SOCKET, SO_NOSIGPIPE,
+			       (char *)&flag, sizeof(flag)) < 0) {
+			omapi_connection_dereference (&obj, MDL);
+			return ISC_R_UNEXPECTED;
+		}			
+#endif
+
 		status = (omapi_register_io_object
 			  ((omapi_object_t *)obj,
 			   0, omapi_connection_writefd,