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Kernel modules: add modules.blocklist build support

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BOARD_<partition>_KERNEL_MODULES_BLOCKLIST_FILE<kernel_version> checks
the syntax of and installs a prebuilt modules.blocklist file.

Example usage:
```
BOARD_VENDOR_KERNEL_MODULES_BLOCKLIST_FILE := \
  $(wildcard <path to prebuilt modules.blocklist>)
```

Then the modules blocklist would be install to
(vendor|vendor_dlkm)/lib/modules/modules.blocklist.

Bug: 175165656
Test: Create a blocklist with incorrect syntax, verify build fails
Test: Verify the new macro indeed installs the blocklist file
Change-Id: Icb75aae1bdb45546792f28f4c4e8d06d9439391a
This commit is contained in:
Yi-Yo Chiang 2021-02-04 23:20:15 +08:00
parent ee7aa0906c
commit c12dd84d01
1 changed files with 27 additions and 2 deletions
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29
core/Makefile
View file

@ -230,7 +230,7 @@ endef
# $(7): module archive
# $(8): staging dir for stripped modules
# $(9): module directory name
# Returns the a list of src:dest pairs to install the modules using copy-many-files.
# Returns a list of src:dest pairs to install the modules using copy-many-files.
define build-image-kernel-modules
$(if $(9), \
$(eval _dir := $(9)/), \
@ -315,6 +315,26 @@ $(1)/$(DEPMOD_STAGING_SUBDIR)/$(4): $(2)
@echo '$$(strip $$(notdir $$(PRIVATE_LOAD_MODULES)))' | tr ' ' '\n' > $$(@)
endef
# $(1): source blocklist file
# $(2): destination pathname
# Returns a build rule that checks the syntax of and installs a kernel modules
# blocklist file. Strip and squeeze any extra space in the blocklist.
# For use via $(eval).
define build-image-kernel-modules-blocklist-file
$(2): $(1)
@echo "modprobe blocklist $$(@)"
$(hide) mkdir -p "$$(dir $$@)"
$(hide) rm -f "$$@"
$(hide) awk <"$$<" >"$$@" \
'/^#/ { print; next } \
NF == 0 { next } \
NF != 2 || $$$$1 != "blocklist" \
{ print "Invalid blocklist line " FNR ": " $$$$0 >"/dev/stderr"; \
exit_status = 1; next } \
{ $$$$1 = $$$$1; print } \
END { exit exit_status }'
endef
# $(1): image name
# $(2): build output directory (TARGET_OUT_VENDOR, TARGET_RECOVERY_ROOT_OUT, etc)
# $(3): mount point
@ -331,7 +351,12 @@ $(if $(5),\
$(if $(strip $(BOARD_$(1)_KERNEL_MODULES$(_sep)$(_kver))$(BOARD_$(1)_KERNEL_MODULES_ARCHIVE$(_sep)$(_kver))),\
$(if $(BOARD_$(1)_KERNEL_MODULES_LOAD$(_sep)$(_kver)),,\
$(eval BOARD_$(1)_KERNEL_MODULES_LOAD$(_sep)$(_kver) := $(BOARD_$(1)_KERNEL_MODULES$(_sep)$(_kver)))) \
$(call copy-many-files,$(call build-image-kernel-modules,$(BOARD_$(1)_KERNEL_MODULES$(_sep)$(_kver)),$(2),$(3),$(call intermediates-dir-for,PACKAGING,depmod_$(1)$(_sep)$(_kver)),$(BOARD_$(1)_KERNEL_MODULES_LOAD$(_sep)$(_kver)),$(4),$(BOARD_$(1)_KERNEL_MODULES_ARCHIVE$(_sep)$(_kver)),$(_stripped_staging_dir),$(_kver))))
$(call copy-many-files,$(call build-image-kernel-modules,$(BOARD_$(1)_KERNEL_MODULES$(_sep)$(_kver)),$(2),$(3),$(call intermediates-dir-for,PACKAGING,depmod_$(1)$(_sep)$(_kver)),$(BOARD_$(1)_KERNEL_MODULES_LOAD$(_sep)$(_kver)),$(4),$(BOARD_$(1)_KERNEL_MODULES_ARCHIVE$(_sep)$(_kver)),$(_stripped_staging_dir),$(_kver)))) \
$(if $(BOARD_$(1)_KERNEL_MODULES_BLOCKLIST_FILE$(_sep)$(_kver)), \
$(eval $(call build-image-kernel-modules-blocklist-file, \
$(BOARD_$(1)_KERNEL_MODULES_BLOCKLIST_FILE$(_sep)$(_kver)), \
$(2)/lib/modules/modules.blocklist)) \
$(2)/lib/modules/modules.blocklist)
endef
# $(1): kernel module directory name (top is an out of band value for no directory)