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Chris Lu
17af32f3ff
* s3: paginate ListBuckets with max-buckets, continuation-token, and prefix ListBuckets buffered every bucket entry into one slice and one XML body, which falls over with very large bucket counts. Page through the filer listing instead, cap each response at 10000 buckets like AWS, and honor max-buckets, prefix, and an opaque keyset continuation-token. * s3: maintain a bucket owner index under /buckets/.system/owners Map each bucket owner to its buckets as zero-length entries at /buckets/.system/owners/<owner>/<bucket>, with Crtime mirroring the bucket's creation time. The bucket handlers write the index synchronously, the /buckets metadata subscription reconciles changes made elsewhere (weed shell, other gateways, direct filer operations), and a startup backfill indexes pre-existing buckets before writing a ready marker. Owner names are path-escaped so no identity name can escape the index directory. * s3: serve ListBuckets from the bucket owner index Once the owner index is ready, non-admin identities list their owned buckets straight from it, merged with any buckets their legacy actions name explicitly, so ListBuckets costs O(own buckets) instead of a scan of the global /buckets directory. Admins, identities with a bare List grant or wildcard action patterns, and policy-authorized identities whose grants cannot be enumerated keep the paged scan; policy-routed identities get their owned buckets, matching AWS ListBuckets returning only the caller's buckets. * s3: keep dot-prefixed names under /buckets out of bucket surfaces Dot-prefixed entries (.system) can never be valid bucket names, so refuse to resolve them as buckets and skip them in the shell bucket listing, matching what ListBuckets and the admin UI already do. * test: cover ListBuckets pagination and the owner index end to end * s3: fail closed on a nil identity when routing ListBuckets * s3: decide the IAM authorization mechanism in one place VerifyActionPermission and the ListBuckets owner-index routing each re-derived the session-token / attached-policy / legacy-actions split; extract the decision so the two cannot drift. * s3: heal the owner index on concurrent bucket recreation too The mkdir-lost-the-race path answers BucketAlreadyOwnedByYou just like the up-front existence check, so give it the same index repair. * s3: drop owner-index records for buckets deleted during backfill A bucket removed between the backfill reading its page and writing the index record became a permanent phantom in its owner's listing: the delete's own cleanup ran before the record existed. After indexing each page, re-list the same name range and remove records whose bucket is gone; deletes landing after the re-list find the record and remove it themselves. * s3: add ContinuationToken and Prefix to the ListBuckets schema Keep AmazonS3.xsd aligned with the generated ListAllMyBucketsResult so a regeneration does not drop the pagination fields.