package/netifrc: new package

netifrc entirely replaces openrc's basic network management. As such, it
conflicts with the network services installed by openrc, so we remove
them from openrc when netifrc is enabled.

Currently, we only catter tfor the loopback interface, but we prepare
for also handling the DHCP interface, to come in a latter patch.

Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
[yann.morin.1998@free.fr:
  - remove openrc files within the openrc package itself
  - as it's a generic-package, no need to use post-install hooks
  - use description from the homepage in the help text
  - check-package fixes
  - rename package
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
[Thomas:
 - pass UDEVDIR to install udev rules at the correct location]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1665,6 +1665,7 @@ F:	board/altera/socrates_cyclone5/
 F:	board/pine64/rock64
 F:	configs/rock64_defconfig
 F:	configs/socrates_cyclone5_defconfig
+F:	package/netifrc/
 F:	package/openrc/
 F:	package/skeleton-init-openrc/
 

package/Config.in

@@ -2227,6 +2227,7 @@ menu "System tools"
 	source "package/mender-grubenv/Config.in"
 	source "package/monit/Config.in"
 	source "package/ncdu/Config.in"
+	source "package/netifrc/Config.in"
 	source "package/numactl/Config.in"
 	source "package/nut/Config.in"
 	source "package/openrc/Config.in"

package/netifrc/Config.in

@@ -0,0 +1,12 @@
+config BR2_PACKAGE_NETIFRC
+	bool "netifrc"
+	depends on BR2_PACKAGE_OPENRC
+	help
+	  netifrc is a collection of modules created to configure and
+	  manage network interfaces via individual, per-interface
+	  scripts.
+
+	  https://wiki.gentoo.org/wiki/Netifrc
+
+comment "netifrc needs openrc as init system"
+	depends on !BR2_PACKAGE_OPENRC

package/netifrc/netifrc.hash

@@ -0,0 +1,3 @@
+# Calculated manually
+sha256	004907e0c3db2d106d6a51d604d79f971f1013fa7642054ad7efe5076e52f7b3	netifrc-0.6.1.tar.gz
+sha256	da376c9e2244f2a7220767ea4dd88cf423ff5b548e7c2f96b0f3b9dac727748a	LICENSE

package/netifrc/netifrc.mk

@@ -0,0 +1,46 @@
+################################################################################
+#
+# netifrc
+#
+################################################################################
+
+NETIFRC_VERSION = 0.6.1
+NETIFRC_SITE = $(call github,gentoo,netifrc,$(NETIFRC_VERSION))
+NETIFRC_LICENSE = BSD-2-Clause
+NETIFRC_LICENSE_FILES = LICENSE
+
+NETIFRC_DEPENDENCIES = openrc
+
+# set LIBNAME so netifrc puts files in proper directories and sets proper
+# paths in installed files. Since in buildroot /lib64 and /lib32 always
+# points to /lib, it's safe to hardcode it to "lib"
+NETIFRC_MAKE_OPTS = \
+	LIBNAME=lib \
+	UDEVDIR=/lib/udev \
+	LIBEXECDIR=/usr/libexec/netifrc
+
+define NETIFRC_BUILD_CMDS
+	$(MAKE) $(NETIFRC_MAKE_OPTS) -C $(@D)
+endef
+
+ifeq ($(BR2_PACKAGE_HAS_UDEV),)
+define NETIFRC_REMOVE_UDEV
+	$(RM) $(TARGET_DIR)/lib/udev/net.sh
+	$(RM) $(TARGET_DIR)/lib/udev/rules.d/90-network.rules
+	rmdir --ignore-fail-on-non-empty $(TARGET_DIR)/lib/udev/rules.d
+	rmdir --ignore-fail-on-non-empty $(TARGET_DIR)/lib/udev
+endef
+endif # BR2_PACKAGE_HAS_UDEV
+
+define NETIFRC_NET_CFG
+	config_lo="127.0.0.1/8"
+endef
+
+define NETIFRC_INSTALL_TARGET_CMDS
+	$(MAKE) $(NETIFRC_MAKE_OPTS) DESTDIR=$(TARGET_DIR) -C $(@D) install
+	$(NETIFRC_REMOVE_UDEV)
+	$(call PRINTF,$(NETIFRC_NET_CFG)) > $(TARGET_DIR)/etc/conf.d/net
+	ln -sf /etc/init.d/net.lo $(TARGET_DIR)/etc/runlevels/default/net.lo
+endef
+
+$(eval $(generic-package))

package/openrc/openrc.mk

@@ -37,6 +37,17 @@ define OPENRC_INSTALL_TARGET_CMDS
 	$(MAKE) $(OPENRC_MAKE_OPTS) DESTDIR=$(TARGET_DIR) -C $(@D) install
 endef
 
+ifeq ($(BR2_PACKAGE_NETIFRC),y)
+# netifrc replaces network, staticroute and loopback services which are
+# installed by openrc
+define OPENRC_NO_NET
+	$(RM) $(TARGET_DIR)/etc/runlevels/boot/{network,staticroute,loopback}
+	$(RM) $(TARGET_DIR)/etc/init.d/{network,staticroute,loopback}
+	$(RM) $(TARGET_DIR)/etc/conf.d/{network,staticroute,loopback}
+endef
+OPENRC_POST_TARGET_INSTALL_HOOKS += OPENRC_NO_NET
+endif
+
 define OPENRC_REMOVE_UNNEEDED
 	$(RM) -r $(TARGET_DIR)/usr/share/openrc
 endef