Blame SOURCES/0027-Add-missed-sd-notify-patch-to-manage-dhcpd-with-syst.patch

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From 8d974fd1f667e1b957ad4092fe66a8bb94f5f8fd Mon Sep 17 00:00:00 2001
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From: Pavel Zhukov <pzhukov@redhat.com>
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Date: Thu, 7 Nov 2019 14:47:45 +0100
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Subject: [PATCH 1/1] Add missed sd notify patch to manage dhcpd with systemd
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Cc: pzhukov@redhat.com
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---
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 configure.ac     | 11 +++++++++++
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 relay/dhcrelay.c | 12 ++++++++++++
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 server/dhcpd.c   | 12 ++++++++++++
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 3 files changed, 35 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index 15fc0d7..0c08000 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1014,6 +1014,17 @@ if test x$ldap = xyes || test x$ldapcrypto = xyes || test x$ldap_gssapi = xyes;
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     AC_SUBST(LDAP_CFLAGS, [$LDAP_CFLAGS])
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 fi
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+AC_ARG_WITH(systemd,
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+        AC_HELP_STRING([--with-systemd],
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+                       [enable sending status notifications to systemd daemon (default is no)]),
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+        [systemd=$withval],
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+        [systemd=no])
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+
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+if test x$systemd = xyes ; then
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+   AC_CHECK_LIB(systemd, sd_notifyf, ,
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+                AC_MSG_FAILURE([*** systemd library not present - do you need to install systemd-libs package?]))
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+fi
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+
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 # Append selected warning levels to CFLAGS before substitution (but after
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 # AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[],[]) & etc).
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 CFLAGS="$CFLAGS $STD_CWARNINGS"
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diff --git a/relay/dhcrelay.c b/relay/dhcrelay.c
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index 7b4f4f1..9eb5bfd 100644
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--- a/relay/dhcrelay.c
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+++ b/relay/dhcrelay.c
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@@ -37,6 +37,10 @@
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    int keep_capabilities = 0;
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 #endif
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+#ifdef HAVE_LIBSYSTEMD
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+#include <systemd/sd-daemon.h>
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+#endif
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+
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 TIME default_lease_time = 43200; /* 12 hours... */
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 TIME max_lease_time = 86400; /* 24 hours... */
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 struct tree_cache *global_options[256];
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@@ -845,6 +849,14 @@ main(int argc, char **argv) {
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 	}
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 #endif
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+#ifdef HAVE_LIBSYSTEMD
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+        /* We are ready to process incomming packets. Let's notify systemd */
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+        sd_notifyf(0, "READY=1\n"
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+                   "STATUS=Dispatching packets...\n"
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+                   "MAINPID=%lu",
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+                   (unsigned long) getpid());
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+#endif
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+
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 	/* Start dispatching packets and timeouts... */
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 	dispatch();
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diff --git a/server/dhcpd.c b/server/dhcpd.c
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index 4aef16b..778ef8d 100644
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--- a/server/dhcpd.c
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+++ b/server/dhcpd.c
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@@ -60,6 +60,10 @@ gid_t set_gid = 0;
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 struct class unknown_class;
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 struct class known_class;
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+#ifdef HAVE_LIBSYSTEMD
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+#include <systemd/sd-daemon.h>
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+#endif
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+
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 struct iaddr server_identifier;
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 int server_identifier_matched;
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@@ -1057,6 +1061,14 @@ main(int argc, char **argv) {
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 	/* Log that we are about to start working */
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 	log_info("Server starting service.");
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+#ifdef HAVE_LIBSYSTEMD
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+        /* We are ready to process incomming packets. Let's notify systemd */
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+        sd_notifyf(0, "READY=1\n"
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+                   "STATUS=Dispatching packets...\n"
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+                   "MAINPID=%lu",
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+                   (unsigned long) getpid());
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+#endif
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+
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 	/*
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 	 * Receive packets and dispatch them...
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 	 * dispatch() will never return.
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-- 
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2.14.5
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