1# 2# Macro that builds the needed Makefile target to create a root 3# filesystem image. 4# 5# The following variable must be defined before calling this macro 6# 7# ROOTFS_$(FSTYPE)_CMD, the command that generates the root 8# filesystem image. A single command is allowed. The filename of the 9# filesystem image that it must generate is $$@. 10# 11# The following variables can optionaly be defined 12# 13# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to 14# build the root filesystem (usually host tools) 15# 16# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before 17# generating the filesystem image 18# 19# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after 20# generating the filesystem image 21# 22# In terms of configuration option, this macro assumes that the 23# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable 24# the generation of a filesystem image of a particular type. If 25# the configuration options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP, 26# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or 27# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the 28# macro will automatically generate a compressed filesystem image. 29 30FS_DIR = $(BUILD_DIR)/buildroot-fs 31ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE) \ 32 $(BR2_ROOTFS_STATIC_DEVICE_TABLE)) 33 34ROOTFS_USERS_TABLES = $(call qstrip,$(BR2_ROOTFS_USERS_TABLES)) 35 36ROOTFS_FULL_DEVICES_TABLE = $(FS_DIR)/full_devices_table.txt 37ROOTFS_FULL_USERS_TABLE = $(FS_DIR)/full_users_table.txt 38 39ROOTFS_COMMON_NAME = rootfs-common 40ROOTFS_COMMON_TYPE = rootfs 41ROOTFS_COMMON_DEPENDENCIES = \ 42 host-fakeroot host-makedevs \ 43 $(BR2_TAR_HOST_DEPENDENCY) \ 44 $(if $(PACKAGES_USERS)$(ROOTFS_USERS_TABLES),host-mkpasswd) 45 46ifeq ($(BR2_REPRODUCIBLE),y) 47define ROOTFS_REPRODUCIBLE 48 find $(TARGET_DIR) -print0 | xargs -0 -r touch -hd @$(SOURCE_DATE_EPOCH) 49endef 50endif 51 52ifeq ($(BR2_PACKAGE_REFPOLICY),y) 53define ROOTFS_SELINUX 54 $(HOST_DIR)/sbin/setfiles -m -r $(TARGET_DIR) \ 55 -c $(TARGET_DIR)/etc/selinux/targeted/policy/policy.$(BR2_PACKAGE_LIBSEPOL_POLICY_VERSION) \ 56 $(TARGET_DIR)/etc/selinux/targeted/contexts/files/file_contexts \ 57 $(TARGET_DIR) 58endef 59ROOTFS_COMMON_DEPENDENCIES += host-policycoreutils 60endif 61 62ROOTFS_COMMON_FINAL_RECURSIVE_DEPENDENCIES = $(sort \ 63 $(if $(filter undefined,$(origin ROOTFS_COMMON_FINAL_RECURSIVE_DEPENDENCIES__X)), \ 64 $(eval ROOTFS_COMMON_FINAL_RECURSIVE_DEPENDENCIES__X := \ 65 $(foreach p, \ 66 $(ROOTFS_COMMON_DEPENDENCIES), \ 67 $(p) \ 68 $($(call UPPERCASE,$(p))_FINAL_RECURSIVE_DEPENDENCIES) \ 69 ) \ 70 ) \ 71 ) \ 72 $(ROOTFS_COMMON_FINAL_RECURSIVE_DEPENDENCIES__X)) 73 74.PHONY: rootfs-common 75rootfs-common: $(ROOTFS_COMMON_DEPENDENCIES) target-finalize 76 @$(call MESSAGE,"Generating root filesystems common tables") 77 rm -rf $(FS_DIR) 78 mkdir -p $(FS_DIR) 79 80 $(call PRINTF,$(PACKAGES_USERS)) >> $(ROOTFS_FULL_USERS_TABLE) 81ifneq ($(ROOTFS_USERS_TABLES),) 82 cat $(ROOTFS_USERS_TABLES) >> $(ROOTFS_FULL_USERS_TABLE) 83endif 84 85 $(call PRINTF,$(PACKAGES_PERMISSIONS_TABLE)) > $(ROOTFS_FULL_DEVICES_TABLE) 86ifneq ($(ROOTFS_DEVICE_TABLES),) 87 cat $(ROOTFS_DEVICE_TABLES) >> $(ROOTFS_FULL_DEVICES_TABLE) 88endif 89ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y) 90 $(call PRINTF,$(PACKAGES_DEVICES_TABLE)) >> $(ROOTFS_FULL_DEVICES_TABLE) 91endif 92 93rootfs-common-show-depends: 94 @echo $(ROOTFS_COMMON_DEPENDENCIES) 95 96.PHONY: rootfs-common-show-info 97rootfs-common-show-info: 98 @: 99 $(info $(call clean-json,{ $(call json-info,ROOTFS_COMMON) })) 100 101# Since this function will be called from within an $(eval ...) 102# all variable references except the arguments must be $$-quoted. 103define inner-rootfs 104 105ROOTFS_$(2)_NAME = rootfs-$(1) 106ROOTFS_$(2)_TYPE = rootfs 107ROOTFS_$(2)_IMAGE_NAME ?= rootfs.$(1) 108ROOTFS_$(2)_FINAL_IMAGE_NAME = $$(strip $$(ROOTFS_$(2)_IMAGE_NAME)) 109ROOTFS_$(2)_DIR = $$(FS_DIR)/$(1) 110ROOTFS_$(2)_TARGET_DIR = $$(ROOTFS_$(2)_DIR)/target 111 112ROOTFS_$(2)_DEPENDENCIES += rootfs-common 113 114ROOTFS_$(2)_FINAL_RECURSIVE_DEPENDENCIES = $$(sort \ 115 $$(if $$(filter undefined,$$(origin ROOTFS_$(2)_FINAL_RECURSIVE_DEPENDENCIES__X)), \ 116 $$(eval ROOTFS_$(2)_FINAL_RECURSIVE_DEPENDENCIES__X := \ 117 $$(foreach p, \ 118 $$(ROOTFS_$(2)_DEPENDENCIES), \ 119 $$(p) \ 120 $$($$(call UPPERCASE,$$(p))_FINAL_RECURSIVE_DEPENDENCIES) \ 121 ) \ 122 ) \ 123 ) \ 124 $$(ROOTFS_$(2)_FINAL_RECURSIVE_DEPENDENCIES__X)) 125 126ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y) 127ROOTFS_$(2)_COMPRESS_EXT = .gz 128ROOTFS_$(2)_COMPRESS_CMD = gzip -9 -c -n 129endif 130ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y) 131ROOTFS_$(2)_COMPRESS_EXT = .bz2 132ROOTFS_$(2)_COMPRESS_CMD = bzip2 -9 -c 133endif 134ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y) 135ROOTFS_$(2)_DEPENDENCIES += host-lzma 136ROOTFS_$(2)_COMPRESS_EXT = .lzma 137ROOTFS_$(2)_COMPRESS_CMD = $$(LZMA) -9 -c 138endif 139ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZ4),y) 140ROOTFS_$(2)_DEPENDENCIES += host-lz4 141ROOTFS_$(2)_COMPRESS_EXT = .lz4 142ROOTFS_$(2)_COMPRESS_CMD = lz4 -l -9 -c 143endif 144ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZO),y) 145ROOTFS_$(2)_DEPENDENCIES += host-lzop 146ROOTFS_$(2)_COMPRESS_EXT = .lzo 147ROOTFS_$(2)_COMPRESS_CMD = $$(LZOP) -9 -c 148endif 149ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y) 150ROOTFS_$(2)_DEPENDENCIES += host-xz 151ROOTFS_$(2)_COMPRESS_EXT = .xz 152ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c 153ifeq ($(BR2_REPRODUCIBLE),) 154ROOTFS_$(2)_COMPRESS_CMD += -T $(PARALLEL_JOBS) 155endif 156endif 157ifeq ($(BR2_TARGET_ROOTFS_$(2)_ZSTD),y) 158ROOTFS_$(2)_DEPENDENCIES += host-zstd 159ROOTFS_$(2)_COMPRESS_EXT = .zst 160ROOTFS_$(2)_COMPRESS_CMD = zstd -19 -z -f -T$(PARALLEL_JOBS) 161endif 162 163$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): ROOTFS=$(2) 164$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): FAKEROOT_SCRIPT=$$(ROOTFS_$(2)_DIR)/fakeroot 165$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): $$(ROOTFS_$(2)_DEPENDENCIES) 166 @$$(call MESSAGE,"Generating filesystem image $$(ROOTFS_$(2)_FINAL_IMAGE_NAME)") 167 mkdir -p $$(@D) 168 rm -rf $$(ROOTFS_$(2)_DIR) 169 mkdir -p $$(ROOTFS_$(2)_DIR) 170 rsync -auH \ 171 --exclude=/$$(notdir $$(TARGET_DIR_WARNING_FILE)) \ 172 $$(BASE_TARGET_DIR)/ \ 173 $$(TARGET_DIR) 174 175 echo '#!/bin/sh' > $$(FAKEROOT_SCRIPT) 176 echo "set -e" >> $$(FAKEROOT_SCRIPT) 177 178 echo "chown -h -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT) 179 PATH=$$(BR_PATH) $$(TOPDIR)/support/scripts/mkusers $$(ROOTFS_FULL_USERS_TABLE) $$(TARGET_DIR) >> $$(FAKEROOT_SCRIPT) 180 echo "$$(HOST_DIR)/bin/makedevs -d $$(ROOTFS_FULL_DEVICES_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT) 181 $$(foreach hook,$$(ROOTFS_PRE_CMD_HOOKS),\ 182 $$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep)) 183 $$(foreach s,$$(call qstrip,$$(BR2_ROOTFS_POST_FAKEROOT_SCRIPT)),\ 184 echo "echo '$$(TERM_BOLD)>>> Executing fakeroot script $$(s)$$(TERM_RESET)'" >> $$(FAKEROOT_SCRIPT); \ 185 echo $$(EXTRA_ENV) $$(s) $$(TARGET_DIR) $$(BR2_ROOTFS_POST_SCRIPT_ARGS) >> $$(FAKEROOT_SCRIPT)$$(sep)) 186 187 $$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),\ 188 $$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep)) 189 $$(call PRINTF,$$(ROOTFS_REPRODUCIBLE)) >> $$(FAKEROOT_SCRIPT) 190 $$(call PRINTF,$$(ROOTFS_SELINUX)) >> $$(FAKEROOT_SCRIPT) 191 $$(call PRINTF,$$(ROOTFS_$(2)_CMD)) >> $$(FAKEROOT_SCRIPT) 192 chmod a+x $$(FAKEROOT_SCRIPT) 193 PATH=$$(BR_PATH) FAKEROOTDONTTRYCHOWN=1 $$(HOST_DIR)/bin/fakeroot -- $$(FAKEROOT_SCRIPT) 194 $(Q)rm -rf $$(TARGET_DIR) 195ifneq ($$(ROOTFS_$(2)_COMPRESS_CMD),) 196 PATH=$$(BR_PATH) $$(ROOTFS_$(2)_COMPRESS_CMD) $$@ > $$@$$(ROOTFS_$(2)_COMPRESS_EXT) 197endif 198 $$(foreach hook,$$(ROOTFS_$(2)_POST_GEN_HOOKS),$$(call $$(hook))$$(sep)) 199 200rootfs-$(1)-show-depends: 201 @echo $$(ROOTFS_$(2)_DEPENDENCIES) 202 203rootfs-$(1)-show-info: 204 @: 205 $$(info $$(call clean-json,{ $$(call json-info,ROOTFS_$(2)) })) 206 207rootfs-$(1): $$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME) 208 209.PHONY: rootfs-$(1) rootfs-$(1)-show-depends rootfs-$(1)-show-info 210 211ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y) 212TARGETS_ROOTFS += rootfs-$(1) 213PACKAGES += $$(filter-out rootfs-%,$$(ROOTFS_$(2)_FINAL_RECURSIVE_DEPENDENCIES)) 214endif 215 216# Check for legacy POST_TARGETS rules 217ifneq ($$(ROOTFS_$(2)_POST_TARGETS),) 218$$(error Filesystem $(1) uses post-target rules, which are no longer supported.\ 219 Update $(1) to use post-gen hooks instead) 220endif 221 222endef 223 224# $(pkgname) also works well to return the filesystem name 225rootfs = $(call inner-rootfs,$(pkgname),$(call UPPERCASE,$(pkgname))) 226 227include $(sort $(wildcard fs/*/*.mk)) 228