[PATCH] image_types: add zsync conversions

[PATCH] image_types: add zsync conversions

[Ross Burton]

Add image conversion types to create zsync[1] metadata.  Use .zsync if
the image is already compressed and .gzsync if zsync should compress the
image itself.

The required tool, zsync-curl, has been submitted to meta-oe.

[1] http://zsync.moria.org.uk

Signed-off-by: Ross Burton <ross.burton@arm.com>
---
 meta/classes/image_types.bbclass | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index 2a45d45c71..954d6739ec 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -278,7 +278,7 @@ IMAGE_TYPES = " \
 # CONVERSION_CMD/DEPENDS.
 COMPRESSIONTYPES ?= ""
 
-CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip zst sum md5sum sha1sum sha224sum sha256sum sha384sum sha512sum bmap u-boot vmdk vhd vhdx vdi qcow2 base64 ${COMPRESSIONTYPES}"
+CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip zst sum md5sum sha1sum sha224sum sha256sum sha384sum sha512sum bmap u-boot vmdk vhd vhdx vdi qcow2 base64 gzsync zsync ${COMPRESSIONTYPES}"
 CONVERSION_CMD_lzma = "lzma -k -f -7 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_gz = "gzip -f -9 -n -c --rsyncable ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
 CONVERSION_CMD_bz2 = "pbzip2 -f -k ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
@@ -302,6 +302,8 @@ CONVERSION_CMD_vhd = "qemu-img convert -O vpc -o subformat=fixed ${IMAGE_NAME}${
 CONVERSION_CMD_vdi = "qemu-img convert -O vdi ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.vdi"
 CONVERSION_CMD_qcow2 = "qemu-img convert -O qcow2 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.qcow2"
 CONVERSION_CMD_base64 = "base64 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.base64"
+CONVERSION_CMD_zsync = "zsyncmake_curl ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
+CONVERSION_CMD_gzsync = "zsyncmake_curl -z ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_DEPENDS_lzma = "xz-native"
 CONVERSION_DEPENDS_gz = "pigz-native"
 CONVERSION_DEPENDS_bz2 = "pbzip2-native"
@@ -319,6 +321,8 @@ CONVERSION_DEPENDS_qcow2 = "qemu-system-native"
 CONVERSION_DEPENDS_base64 = "coreutils-native"
 CONVERSION_DEPENDS_vhdx = "qemu-system-native"
 CONVERSION_DEPENDS_vhd = "qemu-system-native"
+CONVERSION_DEPENDS_zsync = "zsync-curl-native"
+CONVERSION_DEPENDS_gzsync = "zsync-curl-native"
 
 RUNNABLE_IMAGE_TYPES ?= "ext2 ext3 ext4"
 RUNNABLE_MACHINE_PATTERNS ?= "qemu"
-- 
2.25.1