support for sending startup notifications to systemd (#1077666)

dhcp-sd-daemon.patch

@@ -0,0 +1,78 @@
+diff -up dhcp-4.3.0/configure.ac.sd-daemon dhcp-4.3.0/configure.ac
+--- dhcp-4.3.0/configure.ac.sd-daemon	2014-03-18 15:17:11.000000000 +0100
++++ dhcp-4.3.0/configure.ac	2014-03-18 15:35:47.982182345 +0100
+@@ -677,6 +677,17 @@ if test x$ldap = xyes || test x$ldapcryp
+     fi
+ fi
+ 
++AC_ARG_WITH(systemd,
++        AC_HELP_STRING([--with-systemd],
++                       [enable sending status notifications to systemd daemon (default is no)]),
++        [systemd=$withval],
++        [systemd=no])
++
++if test x$systemd = xyes ; then
++   AC_CHECK_LIB(systemd-daemon, sd_notify, ,
++                AC_MSG_FAILURE([*** sd-daemon library not present - do you need to install systemd-libs package?]))
++fi
++
+ # Append selected warning levels to CFLAGS before substitution (but after
+ # AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[],[]) & etc).
+ CFLAGS="$CFLAGS $STD_CWARNINGS"
+diff -up dhcp-4.3.0/relay/dhcrelay.c.sd-daemon dhcp-4.3.0/relay/dhcrelay.c
+--- dhcp-4.3.0/relay/dhcrelay.c.sd-daemon	2014-03-18 15:17:11.000000000 +0100
++++ dhcp-4.3.0/relay/dhcrelay.c	2014-03-18 15:35:42.063264999 +0100
+@@ -36,6 +36,10 @@
+    int keep_capabilities = 0;
+ #endif
+ 
++#ifdef HAVE_LIBSYSTEMD_DAEMON
++#include <systemd/sd-daemon.h>
++#endif
++
+ TIME default_lease_time = 43200; /* 12 hours... */
+ TIME max_lease_time = 86400; /* 24 hours... */
+ struct tree_cache *global_options[256];
+@@ -624,6 +628,14 @@ main(int argc, char **argv) {
+ 	}
+ #endif
+ 
++#ifdef HAVE_LIBSYSTEMD_DAEMON
++        /* We are ready to process incomming packets. Let's notify systemd */
++        sd_notifyf(0, "READY=1\n"
++                   "STATUS=Dispatching packets...\n"
++                   "MAINPID=%lu",
++                   (unsigned long) getpid());
++#endif
++
+ 	/* Start dispatching packets and timeouts... */
+ 	dispatch();
+ 
+diff -up dhcp-4.3.0/server/dhcpd.c.sd-daemon dhcp-4.3.0/server/dhcpd.c
+--- dhcp-4.3.0/server/dhcpd.c.sd-daemon	2014-03-18 15:17:11.000000000 +0100
++++ dhcp-4.3.0/server/dhcpd.c	2014-03-18 15:34:59.207863458 +0100
+@@ -54,6 +54,10 @@ static const char url [] =
+ 
+ #include "trace.h"
+ 
++#ifdef HAVE_LIBSYSTEMD_DAEMON
++#include <systemd/sd-daemon.h>
++#endif
++
+ #ifndef UNIT_TEST
+ static void usage(void);
+ #endif
+@@ -792,6 +796,13 @@ main(int argc, char **argv) {
+ 
+ 	TRACE(DHCPD_MAIN());
+ 
++#ifdef HAVE_LIBSYSTEMD_DAEMON
++        /* We are ready to process incomming packets. Let's notify systemd */
++        sd_notifyf(0, "READY=1\n"
++                   "STATUS=Dispatching packets...\n"
++                   "MAINPID=%lu",
++                   (unsigned long) getpid());
++#endif
+ 	/*
+ 	 * Receive packets and dispatch them...
+ 	 * dispatch() will never return.

dhcp.spec

@@ -18,7 +18,7 @@
 Summary:  Dynamic host configuration protocol software
 Name:     dhcp
 Version:  4.3.0
-Release:  8%{?dist}
+Release:  9%{?dist}
 # NEVER CHANGE THE EPOCH on this package.  The previous maintainer (prior to
 # dcantrell maintaining the package) made incorrect use of the epoch and
 # that's why it is at 12 now.  It should have never been used, but it was.
@@ -79,6 +79,7 @@ Patch39:  dhcp-range6.patch
 Patch40:  dhcp-next-server.patch
 Patch41:  dhcp-no-subnet-error2info.patch
 Patch42:  dhcp-ffff-checksum.patch
+Patch43:  dhcp-sd-daemon.patch
 
 BuildRequires: autoconf
 BuildRequires: automake
@@ -86,7 +87,7 @@ BuildRequires: libtool
 BuildRequires: openldap-devel
 BuildRequires: libcap-ng-devel
 BuildRequires: bind-lite-devel >= 32:9.9.5-0.1.b1
-BuildRequires: systemd
+BuildRequires: systemd systemd-devel
 BuildRequires: doxygen
 %if %sdt
 BuildRequires: systemtap-sdt-devel
@@ -352,6 +353,8 @@ rm -rf includes/isc-dhcp
 # (Submitted to dhcp-bugs@isc.org - [ISC-Bugs #25587])
 %patch42 -p1 -b .ffff
 
+# support for sending startup notification to systemd (#1077666)
+%patch43 -p1 -b .sd-daemon
 
 # Update paths in all man pages
 for page in client/dhclient.conf.5 client/dhclient.leases.5 \
@@ -394,7 +397,8 @@ CFLAGS="%{optflags} -fno-strict-aliasing" \
     --enable-systemtap \
     --with-tapset-install-dir=%{tapsetdir} \
 %endif
-    --enable-paranoia --enable-early-chroot
+    --enable-paranoia --enable-early-chroot \
+    --with-systemd
 %{__make} %{?_smp_mflags}
 pushd doc
 %{__make} devel
@@ -509,11 +513,15 @@ exit 0
 # Initial installation
 %systemd_post dhcpd.service dhcpd6.service dhcrelay.service
 
-# Update
+chown -R dhcpd:dhcpd %{_localstatedir}/lib/dhcpd/
-if [ $1 -gt 1 ] ; then
-  chown -R dhcpd:dhcpd %{_localstatedir}/lib/dhcpd/
-fi
 
+for servicename in dhcpd dhcpd6 dhcrelay; do
+  etcservicefile=%{_sysconfdir}/systemd/system/${servicename}.service
+  if [ -f ${etcservicefile} ]; then
+    grep -q Type= ${etcservicefile} || sed -i '/\[Service\]/a Type=notify' ${etcservicefile}
+  fi
+done
+exit 0
 
 %preun
 # Package removal, not upgrade
@@ -619,6 +627,9 @@ done
 %doc doc/html/
 
 %changelog
+* Tue Mar 18 2014 Jiri Popelka <jpopelka@redhat.com> - 12:4.3.0-9
+- support for sending startup notifications to systemd (#1077666)
+
 * Fri Mar 07 2014 Jiri Popelka <jpopelka@redhat.com> - 12:4.3.0-8
 - rename doc subpackage do devel-doc
 

dhcpd.service

@@ -5,6 +5,7 @@ After=network.target
 After=time-sync.target
 
 [Service]
+Type=notify
 ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid
 
 [Install]

dhcpd6.service

@@ -5,6 +5,7 @@ After=network.target
 After=time-sync.target
 
 [Service]
+Type=notify
 ExecStart=/usr/sbin/dhcpd -f -6 -cf /etc/dhcp/dhcpd6.conf -user dhcpd -group dhcpd --no-pid
 
 [Install]

dhcrelay.service

@@ -4,6 +4,7 @@ Documentation=man:dhcrelay(8)
 After=network.target
 
 [Service]
+Type=notify
 ExecStart=/usr/sbin/dhcrelay -d --no-pid
 
 [Install]