add systemd service file

---
 configure.ac                   | 34 ++++++++++++++++++++++++++++++++++
 files/Makefile.am              | 10 +++++++++-
 files/nftables.conf            |  7 +++++++
 files/nftables/nftables.conf   |  0
 files/systemd/Makefile.am      | 12 ++++++++++++
 files/systemd/nftables-reload  | 15 +++++++++++++++
 files/systemd/nftables.service | 12 ++++++++++++
 7 files changed, 89 insertions(+), 1 deletion(-)
 create mode 100644 files/nftables.conf
 create mode 100644 files/nftables/nftables.conf
 create mode 100644 files/systemd/Makefile.am
 create mode 100755 files/systemd/nftables-reload
 create mode 100644 files/systemd/nftables.service

index 57ea99d..5adb223 100644
@@ -13,6 +13,8 @@ AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([-Wall foreign subdir-objects
         tar-pax no-dist-gzip dist-bzip2 1.6])
 
+AC_PATH_TOOL(PKGCONFIG, pkg-config)
+
 dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 

@@ -112,6 +114,36 @@ AC_TYPE_UINT16_T
 AC_TYPE_UINT32_T
 AC_TYPE_UINT64_T
 
+AC_ARG_WITH(systemd, [  --with-systemd          set directory for

systemd service files],
+ [systemd_unitdir="$withval"; with_systemd=yes],
+ [systemd_unitdir=""; with_systemd=no])
+AC_SUBST(systemd_unitdir)
+
+AC_ARG_WITH(systemdutildir, [ --with-systemdutildir set directory
for systemd helper scripts],
+ [systemd_utildir="$withval"], [systemd_utildir=""])
+AC_SUBST(systemd_utildir)
+
+AM_CONDITIONAL([INSTALL_SYSTEMD], [test "x$with_systemd" != xno]) +AM_COND_IF([INSTALL_SYSTEMD],
+ [AS_IF([test "x$PKGCONFIG" = "x"],
+ [AC_MSG_ERROR(Need pkg-config to enable systemd
support.)], +
+ [AC_MSG_CHECKING(for systemd)
+ AS_IF([$PKGCONFIG --exists systemd],
+ [AC_MSG_RESULT(yes)
+ AS_IF([$PKGCONFIG --exists systemd],
+ [AS_IF([test "x$systemd_unit_dir" = "x"],
+ [ systemd_unitdir="`$PKGCONFIG
--variable=systemdsystemunitdir systemd`"])
+ AS_IF([test "x$systemd_util_dir" = "x"],
+ [ systemd_utildir="`$PKGCONFIG
--variable=systemdutildir systemd`"])
+ ])
+ ]
+ [AC_MSG_RESULT(no)])
+ ]
+
+ )]
+)
+
# Checks for library functions. AC_CHECK_FUNCS([memmove memset strchr strdup strerror strtoull])

@@ -124,10 +156,12 @@
AC_CONFIG_FILES([ \
doc/Makefile \
files/Makefile \
files/nftables/Makefile \
+ files/systemd/Makefile \
])
AC_OUTPUT

echo "
nft configuration:
cli support: ${with_cli}
+ systemd support: ${with_systemd}
enable debugging: ${with_debug}"

index a8394c0..8045495 100644
@@ -1 +1,9 @@
-SUBDIRS = nftables
+SUBDIRS =	nftables	\
+					systemd
+
+nftables_confdir = ${sysconfdir}
+nftables_conf_DATA = nftables.conf
+
+install-data-hook:
+	${SED} -i

's|@sbindir[@]|${sbindir}/|g;s|@sysconfdir[@]|${sysconfdir}/|g' \
+ ${DESTDIR}${sysconfdir}/nftables.conf

new file mode 100644
index 0000000..f572db5
@@ -0,0 +1,7 @@
+#! @sbindir@nft -f
+
+table inet filter {
+	chain input		{ type filter hook input priority

0; }
+ chain forward { type filter hook forward
priority 0; }
+ chain output { type filter hook output priority
0; } +}

new file mode 100644
index 0000000..e69de29

new file mode 100644
index 0000000..c0a56c8
@@ -0,0 +1,12 @@
+
+if INSTALL_SYSTEMD
+systemd_unit_DATA = nftables.service
+
+systemd_scriptsdir = ${systemd_utildir}/scripts
+systemd_scripts_SCRIPTS = nftables-reload
+
+install-data-hook:
+	${SED} -i

's|@sbindir[@]|${sbindir}/|g;s|@sysconfdir[@]|${sysconfdir}/|g;s|@systemd_scriptsdir[@]|${systemd_scriptsdir}/|g' \
+ ${DESTDIR}${systemd_scriptsdir}/nftables-reload \
+ ${DESTDIR}${systemd_unitdir}/nftables.service
+endif

b/files/systemd/nftables-reload new file mode 100755 index 0000000..d688cb6

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+set -e
+
+if [ ! -f @[email protected] ]
+then
+  echo "/etc/nftables.conf does not exist" >&2
+  exit 1
+fi
+
+rules="$(mktemp nftables.XXXXXXXX)"
+trap "rm -f $tmpfile" 0 1 2 3 15
+echo "flush ruleset" > "$rules"
+cat @[email protected] >> "$rules"
+@sbindir@nft -f "$rules"

b/files/systemd/nftables.service new file mode 100644 index 0000000..f958bfc

@@ -0,0 +1,12 @@
+[Unit]
+Description=nftables
+Documentation=man:nft(8)
+
+[Service]
+RemainAfterExit=yes
+ExecStart=@sbindir@nft -I /etc/nftables -f /etc/nftables.conf
+ExecStop=@sbindir@nft flush ruleset
+ExecReload=@systemd_scriptsdir@nftables-reload
+

This is what the code does (/usr/lib/systemd/system/nftables.service).
In nftables.conf I have added some dummy rules, because the service file relies on it and will fails otherwise which is a bad default.

--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html

I mean the shipped nftables.conf, it ought to be installed to /usr(/share/nftables), similar to systemd services.
If and when the user decides to procure his own rules, he will do so via his own nftables.conf, then located in /etc and - ideally - overriding the same-named file in /usr.
--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html