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package/busybox: Add facility for DHCP hooks

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The (u)dhcpc hook installed by the busybox package configures the
network and exits. If we want to do anything further with a DHCP lease,
we'd have to replace the script entirely.

This change introduces a .d directory for hooks (based on the script
filename), which are executed after the interface configuration. This
allows packages to drop a script file in the .d directory to perform
actions on DHCP events.

We'll use this in a later change to notify petitboot of DHCP boot
information.

[Thomas: update to latest Buildroot, fix indentation.]

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Jeremy Kerr 2014-06-17 13:21:47 +08:00 committed by Thomas Petazzoni
parent 952391db04
commit 8fb574fdc8
2 changed files with 8 additions and 0 deletions
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2
package/busybox/busybox.mk
View File

@ -212,6 +212,8 @@ define BUSYBOX_INSTALL_TARGET_CMDS
$(BUSYBOX_MAKE_ENV) $(MAKE) $(BUSYBOX_MAKE_OPTS) -C $(@D) install
$(INSTALL) -m 0755 -D package/busybox/udhcpc.script \
$(TARGET_DIR)/usr/share/udhcpc/default.script
$(INSTALL) -m 0755 -d \
$(TARGET_DIR)/usr/share/udhcpc/default.script.d
$(BUSYBOX_INSTALL_MDEV_CONF)
endef

6
package/busybox/udhcpc.script
View File

@ -64,4 +64,10 @@ case "$1" in
;;
esac
HOOK_DIR="$0.d"
for hook in "${HOOK_DIR}/"*; do
[ -f "${hook}" -a -x "${hook}" ] || continue
"${hook}" "${@}"
done
exit 0