################################################################################
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#
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# Build the ext2 root filesystem image
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#
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################################################################################
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EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE))
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ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(EXT2_SIZE),y-)
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$(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
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endif
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# If SIZE is AUTO, which mean shrink the filesystem to the minimum size.
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# Suppose 2G is big enough for buildroot ext filesystem, we then shrink
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# it after rootfs img packed.
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ifeq ($(EXT2_SIZE),AUTO)
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EXT2_SIZE = 2G
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define ROOTFS_EXT2_SHRINK
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$(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2
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$(HOST_DIR)/sbin/e2fsck -fy $(BINARIES_DIR)/rootfs.ext2
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$(HOST_DIR)/sbin/tune2fs -m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) $(BINARIES_DIR)/rootfs.ext2
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$(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2
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endef
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endif
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EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS))
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# qstrip results in stripping consecutive spaces into a single one. So the
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# variable is not qstrip-ed to preserve the integrity of the string value.
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EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
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#" Syntax highlighting... :-/ )
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EXT2_OPTS = \
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-d $(TARGET_DIR) \
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-r $(BR2_TARGET_ROOTFS_EXT2_REV) \
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-N $(BR2_TARGET_ROOTFS_EXT2_INODES) \
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-m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
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-L "$(EXT2_LABEL)" \
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$(EXT2_MKFS_OPTS)
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ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
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define ROOTFS_EXT2_CMD
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rm -f $@
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$(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(EXT2_OPTS) $@ \
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"$(EXT2_SIZE)" \
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|| { ret=$$?; \
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echo "*** Maybe you need to increase the filesystem size (BR2_TARGET_ROOTFS_EXT2_SIZE)" 1>&2; \
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exit $$ret; \
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}
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endef
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ifneq ($(BR2_TARGET_ROOTFS_EXT2_GEN),2)
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define ROOTFS_EXT2_SYMLINK
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ln -sf rootfs.ext2$(ROOTFS_EXT2_COMPRESS_EXT) $(BINARIES_DIR)/rootfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN)$(ROOTFS_EXT2_COMPRESS_EXT)
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endef
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ROOTFS_EXT2_POST_GEN_HOOKS += ROOTFS_EXT2_SYMLINK ROOTFS_EXT2_SHRINK
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endif
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$(eval $(rootfs))
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