3fbd9887b3
Currently, the symlinks in the generated filesystems will have the UID of the user running the build, because 'chown' does not change the ownership of symlinks, by default. Although the implications are limited, some may not want that UID to leak in the generated filesystems. So, use 'chown -h' so even symlinks get properly chowned. Reported-by: Angelo Dureghello <angelo@barix.com> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
111 lines
4.1 KiB
Makefile
111 lines
4.1 KiB
Makefile
#
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# Macro that builds the needed Makefile target to create a root
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# filesystem image.
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#
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# The following variable must be defined before calling this macro
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#
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# ROOTFS_$(FSTYPE)_CMD, the command that generates the root
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# filesystem image. A single command is allowed. The filename of the
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# filesystem image that it must generate is $$@.
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#
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# The following variables can optionaly be defined
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#
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# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
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# build the root filesystem (usually host tools)
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#
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# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
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# generating the filesystem image
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#
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# ROOTFS_$(FSTYPE)_POST_TARGETS, the list of targets that should be
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# run after running the main filesystem target. This is useful for
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# initramfs, to rebuild the kernel once the initramfs is generated.
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#
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# In terms of configuration option, this macro assumes that the
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# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
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# the generation of a filesystem image of a particular type. If
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# configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
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# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
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# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
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# macro will automatically generate a compressed filesystem image.
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FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
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FULL_DEVICE_TABLE = $(BUILD_DIR)/_device_table.txt
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ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE) \
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$(BR2_ROOTFS_STATIC_DEVICE_TABLE))
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USERS_TABLE = $(BUILD_DIR)/_users_table.txt
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ROOTFS_USERS_TABLES = $(call qstrip,$(BR2_ROOTFS_USERS_TABLES))
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define ROOTFS_TARGET_INTERNAL
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# extra deps
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ROOTFS_$(2)_DEPENDENCIES += host-fakeroot host-makedevs \
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$(if $(PACKAGES_USERS),host-mkpasswd)
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
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ROOTFS_$(2)_COMPRESS_EXT = .gz
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ROOTFS_$(2)_COMPRESS_CMD = gzip -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
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ROOTFS_$(2)_COMPRESS_EXT = .bz2
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ROOTFS_$(2)_COMPRESS_CMD = bzip2 -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
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ROOTFS_$(2)_DEPENDENCIES += host-lzma
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ROOTFS_$(2)_COMPRESS_EXT = .lzma
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ROOTFS_$(2)_COMPRESS_CMD = $$(LZMA) -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZO),y)
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ROOTFS_$(2)_DEPENDENCIES += host-lzop
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ROOTFS_$(2)_COMPRESS_EXT = .lzo
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ROOTFS_$(2)_COMPRESS_CMD = $$(LZOP) -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y)
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ROOTFS_$(2)_COMPRESS_EXT = .xz
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ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c
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endif
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$$(BINARIES_DIR)/rootfs.$(1): target-finalize $$(ROOTFS_$(2)_DEPENDENCIES)
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@$$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
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$$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),$$(call $$(hook))$$(sep))
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rm -f $$(FAKEROOT_SCRIPT)
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rm -f $$(TARGET_DIR_WARNING_FILE)
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rm -f $(USERS_TABLE)
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echo "chown -h -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
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ifneq ($$(ROOTFS_DEVICE_TABLES),)
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cat $$(ROOTFS_DEVICE_TABLES) > $$(FULL_DEVICE_TABLE)
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ifeq ($$(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
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printf '$$(subst $$(sep),\n,$$(PACKAGES_DEVICES_TABLE))' >> $$(FULL_DEVICE_TABLE)
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endif
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printf '$$(subst $$(sep),\n,$$(PACKAGES_PERMISSIONS_TABLE))' >> $$(FULL_DEVICE_TABLE)
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echo "$$(HOST_DIR)/usr/bin/makedevs -d $$(FULL_DEVICE_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
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endif
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ifneq ($$(ROOTFS_USERS_TABLES),)
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cat $$(ROOTFS_USERS_TABLES) >> $(USERS_TABLE)
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endif
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printf '$(subst $(sep),\n,$(PACKAGES_USERS))' >> $(USERS_TABLE)
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PATH=$(BR_PATH) $(TOPDIR)/support/scripts/mkusers $(USERS_TABLE) $(TARGET_DIR) >> $(FAKEROOT_SCRIPT)
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echo "$$(ROOTFS_$(2)_CMD)" >> $$(FAKEROOT_SCRIPT)
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chmod a+x $$(FAKEROOT_SCRIPT)
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PATH=$(BR_PATH) $$(HOST_DIR)/usr/bin/fakeroot -- $$(FAKEROOT_SCRIPT)
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$(INSTALL) -m 0644 support/misc/target-dir-warning.txt $$(TARGET_DIR_WARNING_FILE)
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-@rm -f $$(FAKEROOT_SCRIPT) $$(FULL_DEVICE_TABLE)
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ifneq ($$(ROOTFS_$(2)_COMPRESS_CMD),)
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PATH=$(BR_PATH) $$(ROOTFS_$(2)_COMPRESS_CMD) $$@ > $$@$$(ROOTFS_$(2)_COMPRESS_EXT)
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endif
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rootfs-$(1)-show-depends:
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@echo $$(ROOTFS_$(2)_DEPENDENCIES)
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rootfs-$(1): $$(BINARIES_DIR)/rootfs.$(1) $$(ROOTFS_$(2)_POST_TARGETS)
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
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TARGETS_ROOTFS += rootfs-$(1)
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endif
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endef
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define ROOTFS_TARGET
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$(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))
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endef
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include $(sort $(wildcard fs/*/*.mk))
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