opkg: ensure image provided feeds are available after sysupgrade

Split the opkg.conf into three files, to make it easier to support custom
feeds and configs:

* /etc/opkg.conf -> base opkg configuration
* /etc/opkg/distfeeds.conf -> default Openwrt package feeds
* /etc/opkg/customfeeds.conf -> custom package feeds

Of these three, only the base opkg.conf and the customfeeds.conf is marked
as to be kept, so that the distfeeds.conf from the image is always used.

To ease migration, a script is added that moves any feeds from /etc/opkg.conf
to /etc/opkg/customfeeds.conf on first boot.

Also ensure that any keys used for verification are also kept in upgrade.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 46491

package/system/opkg/Makefile

@@ -12,7 +12,7 @@ include $(INCLUDE_DIR)/feeds.mk
 PKG_NAME:=opkg
 PKG_REV:=9c97d5ecd795709c8584e972bfdf3aee3a5b846d
 PKG_VERSION:=$(PKG_REV)
-PKG_RELEASE:=7
+PKG_RELEASE:=8
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_VERSION:=$(PKG_REV)
@@ -64,6 +64,8 @@ endef
 
 define Package/opkg/conffiles
 /etc/opkg.conf
+/etc/opkg/keys/
+/etc/opkg/customfeeds.conf
 endef
 
 
@@ -110,10 +112,13 @@ MAKE_FLAGS = \
 define Package/opkg/Default/install
 	$(INSTALL_DIR) $(1)/usr/lib/opkg
 	$(INSTALL_DIR) $(1)/bin
-	$(INSTALL_DIR) $(1)/etc
+	$(INSTALL_DIR) $(1)/etc/opkg
+	$(INSTALL_DIR) $(1)/etc/uci-defaults
+	$(INSTALL_DATA) ./files/customfeeds.conf $(1)/etc/opkg/customfeeds.conf
 	$(INSTALL_DATA) ./files/opkg$(2).conf $(1)/etc/opkg.conf
-	$(call FeedSourcesAppend,$(1)/etc/opkg.conf)
-	$(VERSION_SED) $(1)/etc/opkg.conf
+	$(call FeedSourcesAppend,$(1)/etc/opkg/distfeeds.conf)
+	$(VERSION_SED) $(1)/etc/opkg/distfeeds.conf
+	$(INSTALL_BIN) ./files/20_migrate-feeds $(1)/etc/uci-defaults/
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/opkg-cl $(1)/bin/opkg
 endef
 

package/system/opkg/files/20_migrate-feeds

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+[ -f /etc/opkg.conf ] && grep -q "src\/" /etc/opkg.conf || exit 0
+
+echo -e "# Old feeds from previous image\n# Uncomment to reenable\n" >> /etc/opkg/customfeeds.conf
+sed -n "s/.*\(src\/.*\)/# \1/p" /etc/opkg.conf >> /etc/opkg/customfeeds.conf
+sed -i "/.*src\/.*/d" /etc/opkg.conf
+
+exit 0

package/system/opkg/files/customfeeds.conf

@@ -0,0 +1,3 @@
+# add your custom package feeds here
+#
+# src/gz example_feed_name http://www.example.com/path/to/files