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composefs integration in the overlay driver #1646

Merged
merged 7 commits into from
Jul 5, 2023
Merged

composefs integration in the overlay driver #1646

merged 7 commits into from
Jul 5, 2023
+456 −30

Commits on Jul 4, 2023

  1. chunked: file fd leak 

    The file descriptor was not closed before, thus leaking all the opened files.

Signed-off-by: Giuseppe Scrivano <[email protected]>
    @giuseppe
    giuseppe committed Jul 4, 2023
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  2. driver: extend ApplyDiff with differOpts 

    Signed-off-by: Giuseppe Scrivano <[email protected]>
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    giuseppe committed Jul 4, 2023
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  3. chunked: support writing files in a flat dir format 

    so that they can be stored by their digest

Signed-off-by: Giuseppe Scrivano <[email protected]>
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    giuseppe committed Jul 4, 2023
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  4. overlay: move condition to a new variable 

    Signed-off-by: Giuseppe Scrivano <[email protected]>
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    giuseppe committed Jul 4, 2023
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  5. overlay: create idmapped user namespace earlier 

    Signed-off-by: Giuseppe Scrivano <[email protected]>
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    giuseppe committed Jul 4, 2023
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Commits on Jul 5, 2023

  1. overlay: integrate ComposeFS 

    This commit introduces support for ComposeFS using the EROFS
filesystem to mount the file system metadata.

The current implementation allows each layer to be mounted
individually.

Only images that are using the zstd:chunked and eStargz format can be
used in this way since the metadata is stored in the image itself.

In future support for arbitrary images can be added.

Signed-off-by: Giuseppe Scrivano <[email protected]>
    @giuseppe
    giuseppe committed Jul 5, 2023
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  2. overlay, composefs: add fs-verity to files 

    at the moment it is a best-effort implementation to enable fs-verity
for the composefs blob as well as for the data files.

Signed-off-by: Giuseppe Scrivano <[email protected]>
    @giuseppe
    giuseppe committed Jul 5, 2023
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