diff options
Diffstat (limited to 'meta-oe/classes/image_types_sparse.bbclass')
| -rw-r--r-- | meta-oe/classes/image_types_sparse.bbclass | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/meta-oe/classes/image_types_sparse.bbclass b/meta-oe/classes/image_types_sparse.bbclass index 1459f800a5..d6ea68968e 100644 --- a/meta-oe/classes/image_types_sparse.bbclass +++ b/meta-oe/classes/image_types_sparse.bbclass @@ -1,16 +1,17 @@ inherit image_types +# This sets the granularity of the sparse image conversion. Chunk sizes will be +# specified in units of this value. Setting this value smaller than the +# underlying image's block size will not result in any further space saving. +# However, there is no loss in correctness if this value is larger or smaller +# than optimal. This value should be a power of two. +SPARSE_BLOCK_SIZE ??= "4096" + CONVERSIONTYPES += "sparse" -CONVERSION_CMD_sparse() { - in="${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}" - out="${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.sparse" - case "${type}" in - ext*) - ext2simg "$in" "$out" - ;; - *) - img2simg "$in" "$out" - ;; - esac -} + +CONVERSION_CMD:sparse = " \ + truncate --no-create --size=%${SPARSE_BLOCK_SIZE} "${IMAGE_NAME}.${type}"; \ + img2simg -s "${IMAGE_NAME}.${type}" "${IMAGE_NAME}.${type}.sparse" ${SPARSE_BLOCK_SIZE}; \ + " + CONVERSION_DEPENDS_sparse = "android-tools-native" |