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41 results

Android.mk

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  • Android.mk 6.31 KiB
    LOCAL_PATH:= $(call my-dir)
    
    include $(CLEAR_VARS)
    
    # SELinux policy version.
    # Must be <= /selinux/policyvers reported by the Android kernel.
    # Must be within the compatibility range reported by checkpolicy -V.
    POLICYVERS ?= 24
    
    MLS_SENS=1
    MLS_CATS=1024
    
    MAC_PERMISSION_FILE=mac_permissions.xml
    
    # Detect if someone tries to union the mac permissions policy file
    $(if $(filter $(MAC_PERMISSION_FILE), $(BOARD_SEPOLICY_UNION)), \
        $(error Cannot specify $(MAC_PERMISSION_FILE) in BOARD_SEPOLICY_UNION) \
    )
    
    # Quick edge case error detection for BOARD_SEPOLICY_REPLACE.
    # Builds the singular path for each replace file.
    sepolicy_replace_paths :=
    $(foreach pf, $(BOARD_SEPOLICY_REPLACE), \
      $(if $(filter $(pf), $(BOARD_SEPOLICY_UNION)), \
        $(error Ambiguous request for sepolicy $(pf). Appears in both \
          BOARD_SEPOLICY_REPLACE and BOARD_SEPOLICY_UNION), \
      ) \
      $(eval _paths := $(filter-out $(BOARD_SEPOLICY_IGNORE), \
      $(wildcard $(addsuffix /$(pf), $(BOARD_SEPOLICY_DIRS))))) \
      $(eval _occurrences := $(words $(_paths))) \
      $(if $(filter 0,$(_occurrences)), \
        $(error No sepolicy file found for $(pf) in $(BOARD_SEPOLICY_DIRS)), \
      ) \
      $(if $(filter 1, $(_occurrences)), \
        $(eval sepolicy_replace_paths += $(_paths)), \
        $(error Multiple occurrences of replace file $(pf) in $(_paths)) \
      ) \
      $(if $(filter 0, $(words $(wildcard $(addsuffix /$(pf), $(LOCAL_PATH))))), \
        $(error Specified the sepolicy file $(pf) in BOARD_SEPOLICY_REPLACE, \
          but none found in $(LOCAL_PATH)), \
      ) \
    )
    
    # Builds paths for all requested policy files w.r.t
    # both BOARD_SEPOLICY_REPLACE and BOARD_SEPOLICY_UNION
    # product variables.
    # $(1): the set of policy name paths to build
    build_policy = $(foreach type, $(1), \
      $(filter-out $(BOARD_SEPOLICY_IGNORE), \
        $(foreach expanded_type, $(notdir $(wildcard $(addsuffix /$(type), $(LOCAL_PATH)))), \
          $(if $(filter $(expanded_type), $(BOARD_SEPOLICY_REPLACE)), \
            $(wildcard $(addsuffix $(expanded_type), $(sort $(dir $(sepolicy_replace_paths))))), \
            $(LOCAL_PATH)/$(expanded_type) \
          ) \
        ) \
        $(foreach union_policy, $(wildcard $(addsuffix /$(type), $(BOARD_SEPOLICY_DIRS))), \
          $(if $(filter $(notdir $(union_policy)), $(BOARD_SEPOLICY_UNION)), \
            $(union_policy), \
          ) \
        ) \
      ) \
    )
    
    ##################################
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := sepolicy
    LOCAL_MODULE_CLASS := ETC
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
    
    include $(BUILD_SYSTEM)/base_rules.mk
    
    sepolicy_policy.conf := $(intermediates)/policy.conf
    $(sepolicy_policy.conf): PRIVATE_MLS_SENS := $(MLS_SENS)
    $(sepolicy_policy.conf): PRIVATE_MLS_CATS := $(MLS_CATS)
    $(sepolicy_policy.conf) : $(call build_policy, security_classes initial_sids access_vectors global_macros mls_macros mls policy_capabilities te_macros attributes *.te roles users initial_sid_contexts fs_use genfs_contexts port_contexts)
    	@mkdir -p $(dir $@)
    	$(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) -s $^ > $@
    
    $(LOCAL_BUILT_MODULE) : $(sepolicy_policy.conf) $(HOST_OUT_EXECUTABLES)/checkpolicy
    	@mkdir -p $(dir $@)
    	$(hide) $(HOST_OUT_EXECUTABLES)/checkpolicy -M -c $(POLICYVERS) -o $@ $<
    
    built_sepolicy := $(LOCAL_BUILT_MODULE)
    sepolicy_policy.conf :=
    
    ###################################
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := file_contexts
    LOCAL_MODULE_CLASS := ETC
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
    
    include $(BUILD_SYSTEM)/base_rules.mk
    
    ALL_FC_FILES := $(call build_policy, file_contexts)
    
    $(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
    $(LOCAL_BUILT_MODULE):  $(ALL_FC_FILES) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkfc
    	@mkdir -p $(dir $@)
    	$(hide) m4 -s $(ALL_FC_FILES) > $@
    	$(hide) $(HOST_OUT_EXECUTABLES)/checkfc $(PRIVATE_SEPOLICY) $@
    
    file_contexts :=
    
    ##################################
    include $(CLEAR_VARS)
    LOCAL_MODULE := seapp_contexts
    LOCAL_MODULE_CLASS := ETC
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
    
    include $(BUILD_SYSTEM)/base_rules.mk
    
    seapp_contexts.tmp := $(intermediates)/seapp_contexts.tmp
    $(seapp_contexts.tmp): $(call build_policy, seapp_contexts)
    	@mkdir -p $(dir $@)
    	$(hide) m4 -s $^ > $@
    
    $(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
    $(LOCAL_BUILT_MODULE) : $(seapp_contexts.tmp) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkseapp
    	@mkdir -p $(dir $@)
    	$(HOST_OUT_EXECUTABLES)/checkseapp -p $(PRIVATE_SEPOLICY) -o $@ $<
    
    seapp_contexts.tmp :=
    ##################################
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := property_contexts
    LOCAL_MODULE_CLASS := ETC
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
    
    include $(BUILD_SYSTEM)/base_rules.mk
    
    ALL_PC_FILES := $(call build_policy, property_contexts)
    
    $(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
    $(LOCAL_BUILT_MODULE):  $(ALL_PC_FILES) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkfc
    	@mkdir -p $(dir $@)
    	$(hide) m4 -s $(ALL_PC_FILES) > $@
    	$(hide) $(HOST_OUT_EXECUTABLES)/checkfc -p $(PRIVATE_SEPOLICY) $@
    
    property_contexts :=
    built_sepolicy :=
    ##################################
    
    ##################################
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := selinux-network.sh
    LOCAL_SRC_FILES := $(LOCAL_MODULE)
    LOCAL_MODULE_CLASS := EXECUTABLES
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_OUT_EXECUTABLES)
    
    include $(BUILD_PREBUILT)
    
    ##################################
    include $(CLEAR_VARS)
    
    LOCAL_MODULE := $(MAC_PERMISSION_FILE)
    LOCAL_MODULE_CLASS := ETC
    LOCAL_MODULE_TAGS := optional
    LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/security
    
    include $(BUILD_SYSTEM)/base_rules.mk
    
    # Build keys.conf
    mac_perms_keys.tmp := $(intermediates)/keys.tmp
    $(mac_perms_keys.tmp) : $(call build_policy, keys.conf)
    	@mkdir -p $(dir $@)
    	$(hide) m4 -s $^ > $@
    
    # Build mac_permissions.xml
    $(MAC_PERMISSION_FILE).tmp := $(intermediates)/$(MAC_PERMISSION_FILE).tmp
    $($(MAC_PERMISSION_FILE).tmp) : $(call build_policy, $(MAC_PERMISSION_FILE))
    	@mkdir -p $(dir $@)
    	$(hide) cp $^ $@
    
    $(LOCAL_BUILT_MODULE) : $($(MAC_PERMISSION_FILE).tmp) $(mac_perms_keys.tmp) $(HOST_OUT_EXECUTABLES)/insertkeys.py
    	@mkdir -p $(dir $@)
    	$(HOST_OUT_EXECUTABLES)/insertkeys.py -t $(TARGET_BUILD_VARIANT) -c $(TOP) $(mac_perms_keys.tmp) -o $@ $<
    
    $(MAC_PERMISSION_FILE).tmp :=
    ##################################
    
    build_policy :=
    sepolicy_replace_paths :=
    
    include $(call all-makefiles-under,$(LOCAL_PATH))