dhcp: 4.3.5 -> 4.3.6

1. Rebase patches to 4.3.6
- define-macro-_PATH_DHCPD_CONF-and-_PATH_DHCLIENT_CON.patch -> 0001
- dhcp-3.0.3-dhclient-dbus.patch -> 0002
- link-with-lcrypto.patch -> 0003
- fixsepbuild.patch -> 0004
- dhclient-script-drop-resolv.conf.dhclient.patch -> 0005
- 0001-site.h-enable-gentle-shutdown.patch -> 0006
- libxml2-configure-argument.patch -> 0007
- tweak-to-support-external-bind.patch -> 0008
- remove-dhclient-script-bash-dependency.patch -> 0009
- build-shared-libs.patch -> 0010
- Moved-the-call-to-isc_app_ctxstart-to-not-get-signal.patch -> 0011

2. Drop search-for-libxml2.patch
   It is overrided by libxml2-configure-argument.patch

3. Rework dhclient-script-drop-resolv.conf.dhclient.patch and
Drop replace-ifconfig-route.patch.
vim client/scripts/linux
...
Script refresh in 2017. The aliasing code was too convoluted and needs
to go away. Migrated DHCPv4 script to ip command from iproute2 suite.
This is based on Debian script with some tweaks. ifconfig is no longer
used. Everything is done using ip tool from ip-route2.
...

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/dhcp/dhcp/0011-Moved-the-call-to-isc_app_ctxstart-to-not-get-signal.patch b/meta/recipes-connectivity/dhcp/dhcp/0011-Moved-the-call-to-isc_app_ctxstart-to-not-get-signal.patch
new file mode 100644
index 0000000000..67bb4631ae
--- /dev/null
+++ b/meta/recipes-connectivity/dhcp/dhcp/0011-Moved-the-call-to-isc_app_ctxstart-to-not-get-signal.patch
@@ -0,0 +1,81 @@
+From 37725f3e22edb50e0ca2d1fff971321a5a4d5112 Mon Sep 17 00:00:00 2001
+From: Hongxu Jia <hongxu.jia@windriver.com>
+Date: Wed, 12 Jul 2017 03:05:13 -0400
+Subject: [PATCH 11/11] Moved the call to isc_app_ctxstart() to not get signal
+ block by all threads
+
+Signed-off-by: Francis Dupont <fdupont@isc.org>
+
+In https://source.isc.org/git/bind9.git, since the following
+commit applied:
+...
+commit b99bfa184bc9375421b5df915eea7dfac6a68a99
+Author: Evan Hunt <each@isc.org>
+Date:   Wed Apr 10 13:49:57 2013 -0700
+
+    [master] unify internal and export libraries
+
+    3550.       [func]          Unified the internal and export versions of the
+                        BIND libraries, allowing external clients to use
+                        the same libraries as BIND. [RT #33131]
+...
+(git show b99bfa184bc9375421b5df915eea7dfac6a68a99 -- ./lib/isc/unix/app.c)
+
+In this commit, if bind9 enable threads(ISC_PLATFORM_USETHREADS),
+it blocks signal SIGHUP, SIGINT and SIGTERM in isc__app_ctxstart.
+Which caused dhclient/dhcpd could not be stopped by SIGTERM.
+
+It caused systemd's reboot hung which send SIGTERM by default.
+
+Upstream-Status: Backport [https://source.isc.org/git/dhcp.git]
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+---
+ omapip/isclib.c | 25 +++++++++++++++----------
+ 1 file changed, 15 insertions(+), 10 deletions(-)
+
+diff --git a/omapip/isclib.c b/omapip/isclib.c
+index ce86490..6a04345 100644
+--- a/omapip/isclib.c
++++ b/omapip/isclib.c
+@@ -185,16 +185,6 @@ dhcp_context_create(int flags,
+ 		if (result != ISC_R_SUCCESS)
+ 			goto cleanup;
+ 
+-		result = isc_app_ctxstart(dhcp_gbl_ctx.actx);
+-		if (result != ISC_R_SUCCESS)
+-			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,
+@@ -217,6 +207,21 @@ dhcp_context_create(int flags,
+ 		result = isc_task_create(dhcp_gbl_ctx.taskmgr, 0, &dhcp_gbl_ctx.task);
+ 		if (result != ISC_R_SUCCESS)
+ 			goto cleanup;
++
++		result = isc_app_ctxstart(dhcp_gbl_ctx.actx);
++		if (result != ISC_R_SUCCESS)
++			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);
++
++		/* Reset handlers installed by isc_app_ctxstart()
++		 * to default for control-c and kill */
++		handle_signal(SIGINT, SIG_DFL);
++		handle_signal(SIGTERM, SIG_DFL);
+ 	}
+ 
+ #if defined (NSUPDATE)
+-- 
+1.8.3.1
+