build: lock versions for special APK packages

The three packages base-files, libc and kernel are special, the former
can't be upgraded in place since it's content are modified on startup,
the latter two are virtual packages only used as constraints for the
package manager.

Historically base-files was "locked" via a special OPKG function, the
latter two were hidden from the package index and thereby never picked
as possible upgrade.

Time moved forward and we now have APK and tools like OWUT. The latter
compares available packages with installed packages and generates user
readable output, requiring versions for libc and kernel, too. At the
same time, APK uses a different looking mechanism, which is set during
installation instead of part of the package metadata.

In short, this patch adds version constraints to the three packages,
allowing them to be part of the package index.

Fixes: #17774
Fixes: #17775
Fixes: efahl/owut#31

Signed-off-by: Paul Spooren <mail@aparcar.org>

include/version.mk

@@ -6,6 +6,9 @@
 # Substituted by SDK, do not remove
 # REVISION:=x
 # SOURCE_DATE_EPOCH:=x
+# BASE_FILES_VERSION:=x
+# KERNEL_VERSION:=x
+# LIBC_VERSION:=x
 
 PKG_CONFIG_DEPENDS += \
 	CONFIG_VERSION_HOME_URL \

package/Makefile

@@ -100,7 +100,11 @@ ifneq ($(CONFIG_USE_APK),)
 	    $(foreach pkg,$(shell cat $(PACKAGE_INSTALL_FILES) 2>/dev/null),$(pkg)$(call GetABISuffix,$(pkg))))
 	$(call apk,$(TARGET_DIR)) add --no-cache --initdb --no-scripts --arch $(ARCH_PACKAGES) \
 		--repositories-file /dev/null --repository file://$(PACKAGE_DIR_ALL)/packages.adb \
-		$$(cat $(TMP_DIR)/apk_install_list)
+		$$(cat $(TMP_DIR)/apk_install_list) \
+			"base-files=$(shell cat $(TMP_DIR)/base-files.version)" \
+			"libc=$(shell cat $(TMP_DIR)/libc.version)" \
+			"kernel=$(shell cat $(TMP_DIR)/kernel.version)"
+
 	rm -rf $(TARGET_DIR)/run
 else
 	$(file >$(TMP_DIR)/opkg_install_list,\
@@ -131,7 +135,7 @@ ifneq ($(CONFIG_USE_APK),)
 			--keys-dir $(TOPDIR) \
 			--sign $(BUILD_KEY_APK_SEC) \
 			--output packages.adb \
-			$$(ls *.apk | grep -vE '^(base-files-|kernel-|libc-)'); \
+			*.apk; \
 		echo -n '{"architecture": "$(ARCH_PACKAGES)", "packages":{' > index.json; \
 		$(STAGING_DIR_HOST)/bin/apk adbdump packages.adb | \
 			awk '/- name: / {pkg = $$NF} ; / version: / {printf "\"%s\": \"%s\", ", pkg, $$NF}' | \

package/base-files/Makefile

@@ -256,6 +256,7 @@ ifneq ($(CONFIG_USE_APK),)
 
 	rm -f $(1)/etc/uci-defaults/13_fix-group-user
 	rm -f $(1)/sbin/pkg_check
+	echo $(PKG_RELEASE)~$(lastword $(subst -, ,$(REVISION))) >$(TMP_DIR)/base-files.version
 else
 	$(if $(CONFIG_CLEAN_IPKG),, \
 		mkdir -p $(1)/etc/opkg; \

package/kernel/linux/Makefile

@@ -64,6 +64,7 @@ define Package/kernel/install
 	strings $(LINUX_DIR)/modules.builtin.modinfo | \
 		grep -E -v "\.(file$(if CONFIG_MODULE_STRIPPED,|parmtype))=" | \
 		tr '\n' '\0' > $(1)/$(MODULES_SUBDIR)/modules.builtin.modinfo
+	echo $(LINUX_VERSION)~$(LINUX_VERMAGIC)-r$(LINUX_RELEASE) > $(TMP_DIR)/kernel.version
 endef
 
 define Package/kernel/extra_provides

package/libs/toolchain/Makefile

@@ -578,6 +578,7 @@ ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
   endef
 
   define Package/libc/install
+    echo $(LIBC_VERSION)-r$(PKG_RELEASE) > $(TMP_DIR)/libc.version; \
     $(call Package/$(LIBC)/install,$1)
   endef
 
@@ -697,6 +698,7 @@ else
   endef
 
   define Package/libc/install
+	echo $(LIBC_VERSION)-r$(PKG_RELEASE) > $(TMP_DIR)/libc.version; \
 	for file in $(call qstrip,$(CONFIG_LIBC_FILE_SPEC)); do \
 		$(INSTALL_DIR) $(1)/lib ; \
 		$(CP) $(call qstrip,$(CONFIG_LIBC_ROOT_DIR))/$$$$file $(1)/lib/ ; \

target/imagebuilder/Makefile

@@ -127,6 +127,9 @@ endif
 	fi
 	$(SED) 's,^# REVISION:=.*,REVISION:=$(REVISION),g' $(PKG_BUILD_DIR)/include/version.mk
 	$(SED) 's,^# SOURCE_DATE_EPOCH:=.*,SOURCE_DATE_EPOCH:=$(SOURCE_DATE_EPOCH),g' $(PKG_BUILD_DIR)/include/version.mk
+	$(SED) 's,^# BASE_FILES_VERSION:=.*,BASE_FILES_VERSION:=$(shell cat $(TMP_DIR)/base-files.version),g' $(PKG_BUILD_DIR)/include/version.mk
+	$(SED) 's,^# LIBC_VERSION:=.*,LIBC_VERSION:=$(shell cat $(TMP_DIR)/libc.version),g' $(PKG_BUILD_DIR)/include/version.mk
+	$(SED) 's,^# KERNEL_VERSION:=.*,KERNEL_VERSION:=$(shell cat $(TMP_DIR)/kernel.version),g' $(PKG_BUILD_DIR)/include/version.mk
 	$(SED) '/LINUX_VERMAGIC:=/ { s,unknown,$(LINUX_VERMAGIC),g }' $(PKG_BUILD_DIR)/include/kernel.mk
 	find $(PKG_BUILD_DIR) -name CVS -o -name .git -o -name .svn \
 	  | $(XARGS) rm -rf

target/imagebuilder/files/Makefile

@@ -227,7 +227,10 @@ ifeq ($(CONFIG_USE_APK),)
 	$(OPKG) install $(wildcard $(PACKAGE_DIR)/kernel_*.ipk)
 	$(OPKG) install $(BUILD_PACKAGES)
 else
-	$(APK) add --arch $(ARCH_PACKAGES) --no-scripts $(BUILD_PACKAGES)
+	$(APK) add --arch $(ARCH_PACKAGES) --no-scripts $(BUILD_PACKAGES) \
+        "base-files=$(BASE_FILES_VERSION)" \
+        "libc=$(LIBC_VERSION)" \
+        "kernel=$(KERNEL_VERSION)"
 endif
 
 prepare_rootfs: FORCE