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From d1b1f91a7982be28acdfb580996c93aafcc76cc2 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 27/28] Add missed sd notify patch to manage dhcpd with systemd
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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 300117f..f644e71 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1005,6 +1005,17 @@ 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 0dc17d6..d3ad31e 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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@@ -869,6 +873,14 @@ 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 3b3bd3b..9223d5b 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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2.35.1
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