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Allow a single DHCP configuration via the system configuration submenu

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This patch allows the setup of simple a single interface to be
automatically brought up and configured via DHCP on system startup.

The interface name can be set via a configuration option. This patch
does not support systemd-networkd, any complex network configuration should
be done via overlay of /etc/network/interfaces or the relevant networkd
configuration file

[Peter: rename to BR2_SYSTEM_DHCP, tweak help text & implementation]
Signed-off-by: Jérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Jeremy Rosen
2015-01-16 14:08:39 +01:00
committed by Peter Korsgaard
parent d538b8bf93
commit f4f62a3c16
3 changed files with 49 additions and 4 deletions
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29
system/system.mk
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@@ -38,6 +38,35 @@ ifneq ($(TARGET_GENERIC_ROOT_PASSWD),)
TARGETS += host-mkpasswd
endif
define SET_NETWORK_LOCALHOST
( \
echo "# interface file auto-generated by buildroot"; \
echo ; \
echo "auto lo"; \
echo "iface lo inet loopback"; \
) > $(TARGET_DIR)/etc/network/interfaces
endef
NETWORK_DHCP_IFACE = $(call qstrip,$(BR2_SYSTEM_DHCP))
ifneq ($(NETWORK_DHCP_IFACE),)
define SET_NETWORK_DHCP
( \
echo ; \
echo "auto $(NETWORK_DHCP_IFACE)"; \
echo "iface $(NETWORK_DHCP_IFACE) inet dhcp"; \
) >> $(TARGET_DIR)/etc/network/interfaces
endef
endif
define SET_NETWORK
mkdir -p $(TARGET_DIR)/etc/network/
$(SET_NETWORK_LOCALHOST)
$(SET_NETWORK_DHCP)
endef
TARGET_FINALIZE_HOOKS += SET_NETWORK
ifeq ($(BR2_ROOTFS_SKELETON_DEFAULT),y)
define SYSTEM_ROOT_PASSWD