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7d251f5a74
Add a --all/-a flag to instruct us to attempt to copy all of the instances in the source image, if the source image specified to "skopeo copy" is actually a list of images. Previously, we'd just try to locate one for our preferred OS/arch combination. Add a couple of tests to verify that we can copy an image into and then back out of containers-storage. The contents of an image that has been copied out of containers-storage need a bit of tweaking to compensate for containers-storage's habit of returning uncompressed versions of the layer blobs that were originally written to it, in order to be comparable to the image as it was when it was pulled from a registry. Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
24 lines
1.4 KiB
Bash
Executable File
24 lines
1.4 KiB
Bash
Executable File
#!/bin/bash -e
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# Account for differences between dir: images that are solely due to one being
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# compressed (fresh from a registry) and the other not being compressed (read
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# from storage, which decompressed it and had to reassemble the layer blobs).
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for dir in "$@" ; do
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# Updating the manifest's blob digests may change the formatting, so
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# use jq to get them into similar shape.
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jq -M . "${dir}"/manifest.json > "${dir}"/manifest.json.tmp && mv "${dir}"/manifest.json.tmp "${dir}"/manifest.json
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for candidate in "${dir}"/???????????????????????????????????????????????????????????????? ; do
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# If a digest-identified file looks like it was compressed,
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# decompress it, and replace its hash and size in the manifest
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# with the values for their decompressed versions.
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uncompressed=`zcat "${candidate}" 2> /dev/null | sha256sum | cut -c1-64`
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if test $? -eq 0 ; then
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if test "$uncompressed" != e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 ; then
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zcat "${candidate}" > "${dir}"/${uncompressed}
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sed -r -i -e "s#sha256:$(basename ${candidate})#sha256:${uncompressed}#g" "${dir}"/manifest.json
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sed -r -i -e "s#\"size\": $(wc -c < ${candidate}),#\"size\": $(wc -c < ${dir}/${uncompressed}),#g" "${dir}"/manifest.json
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rm -f "${candidate}"
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fi
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fi
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done
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done
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