dump: Support --filter
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I'm looking at storing OCI container images with their metadata included in the image - giving a "single file" holding all the relevant bits for an image. Specifically a structure like this: ``` /manifest.json /config.json /rootfs ``` I want higher level tooling to be able to read the metadata efficiently. Of course we could directly parse the EROFS image...but a lot of pitfalls there. We could also mount the image but that's pretty inefficient for this. Add support for filtering when generating a dump; this can operate fully unprivileged, and only requires some minor modifications to the library and CLI tooling. Signed-off-by: Colin Walters <walters@verbum.org>
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I'm looking at storing OCI container images with their metadata included in the image - giving a "single file" holding all the relevant bits for an image. Specifically a structure like this:
I want higher level tooling to be able to read the metadata efficiently. Of course we could directly parse the EROFS image...but a lot of pitfalls there. We could also mount the image but that's pretty inefficient for this.
Add support for filtering when generating a dump; this can operate fully unprivileged, and only requires some minor modifications to the library and CLI tooling.