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fs/iso9660: add option for transparent (de)compression

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Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Thomas: rename option to BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2017-12-20 22:27:42 +01:00 committed by Thomas Petazzoni
parent 7555a2ae1a
commit 90867d8fdf
2 changed files with 21 additions and 0 deletions
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9
fs/iso9660/Config.in
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@ -63,6 +63,15 @@ config BR2_TARGET_ROOTFS_ISO9660_INITRD
contain a kernel image, an initrd image (unless an initramfs contain a kernel image, an initrd image (unless an initramfs
linked into the kernel is used) and the bootloader. linked into the kernel is used) and the bootloader.
config BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION
bool "transparent compression"
depends on !BR2_TARGET_ROOTFS_ISO9660_INITRD
depends on !BR2_TARGET_ROOTFS_INITRAMFS
help
Say 'y' to enable use of transparent (de)compression. Files
are stored compressed and will be decompressed on-the-fly
upon access at runtime.
config BR2_TARGET_ROOTFS_ISO9660_HYBRID config BR2_TARGET_ROOTFS_ISO9660_HYBRID
bool "Build hybrid image" bool "Build hybrid image"
depends on BR2_TARGET_ROOTFS_ISO9660_ISOLINUX depends on BR2_TARGET_ROOTFS_ISO9660_ISOLINUX

12
fs/iso9660/iso9660.mk
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@ -41,6 +41,17 @@ define ROOTFS_ISO9660_CREATE_TEMPDIR
mkdir -p $(ROOTFS_ISO9660_TARGET_DIR) mkdir -p $(ROOTFS_ISO9660_TARGET_DIR)
endef endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_CREATE_TEMPDIR ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_CREATE_TEMPDIR
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION),y)
ROOTFS_ISO9660_TARGET_DIR = $(FS_DIR)/rootfs.iso9660.tmp
# This must be early, before we copy the bootloader files
define ROOTFS_ISO9660_MKZFTREE
$(RM) -rf $(ROOTFS_ISO9660_TARGET_DIR)
mkzftree -X -z 9 -p $(PARALLEL_JOBS) \
$(TARGET_DIR) \
$(ROOTFS_ISO9660_TARGET_DIR)
endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_MKZFTREE
ROOTFS_ISO9660_GENISOIMAGE_OPTS += -z
else else
ROOTFS_ISO9660_TARGET_DIR = $(TARGET_DIR) ROOTFS_ISO9660_TARGET_DIR = $(TARGET_DIR)
endif endif
@ -117,6 +128,7 @@ endif # ROOTFS_ISO9660_USE_INITRD
define ROOTFS_ISO9660_CMD define ROOTFS_ISO9660_CMD
$(HOST_DIR)/bin/genisoimage -J -R -b $(ROOTFS_ISO9660_BOOT_IMAGE) \ $(HOST_DIR)/bin/genisoimage -J -R -b $(ROOTFS_ISO9660_BOOT_IMAGE) \
-no-emul-boot -boot-load-size 4 -boot-info-table \ -no-emul-boot -boot-load-size 4 -boot-info-table \
$(ROOTFS_ISO9660_GENISOIMAGE_OPTS) \
-o $@ $(ROOTFS_ISO9660_TARGET_DIR) -o $@ $(ROOTFS_ISO9660_TARGET_DIR)
endef endef