Files
s3/weed/mount/wfs_save.go
zooqueen dd74d3e6d6 Replace AGPL MinIO fork with Apache-2.0 SeaweedFS fork; rebrand CLI weed->s3
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.

- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
  "Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
  SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
  (replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
  keep their upstream import paths with zero churn. Internal identifiers and
  import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
  help/usage/flag strings, shell autocomplete program name, and the product name
  in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
  (e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
  `cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
  updated to ignore the `s3` build output.
2026-06-18 23:41:25 -07:00

105 lines
3.7 KiB
Go

package mount
import (
"context"
"fmt"
"syscall"
"time"
"github.com/seaweedfs/go-fuse/v2/fuse"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
)
func (wfs *WFS) saveEntry(path util.FullPath, entry *filer_pb.Entry) (code fuse.Status) {
parentDir, _ := path.DirAndName()
wfs.mapPbIdFromLocalToFiler(entry)
defer wfs.mapPbIdFromFilerToLocal(entry)
request := &filer_pb.UpdateEntryRequest{
Directory: parentDir,
Entry: entry,
Signatures: []int32{wfs.signature},
}
glog.V(1).Infof("save entry: %v", request)
var resp *filer_pb.UpdateEntryResponse
err := retryMetadataFlushIf(func() error {
var callErr error
resp, callErr = wfs.streamUpdateEntry(context.Background(), request)
return callErr
}, isRetryableFilerError, func(nextAttempt, totalAttempts int, backoff time.Duration, err error) {
glog.Warningf("saveEntry %s: retrying UpdateEntry (attempt %d/%d) after %v: %v",
path, nextAttempt, totalAttempts, backoff, err)
})
if err != nil {
// Wrap with %w so grpcErrorToFuseStatus can still unwrap the gRPC status
// (e.g. codes.Canceled → ETIMEDOUT). Using %v would stringify the error and
// status.FromError would fall through to the default EIO.
err = fmt.Errorf("UpdateEntry dir %s: %w", path, err)
fuseStatus := grpcErrorToFuseStatus(err)
if fuseStatus == fuse.EIO {
glog.Errorf("saveEntry failed for %s: %v (returning EIO)", path, err)
} else {
glog.V(1).Infof("saveEntry failed for %s: %v (returning %v)", path, err, fuseStatus)
}
return fuseStatus
}
event := resp.GetMetadataEvent()
if event == nil {
event = metadataUpdateEvent(parentDir, entry)
}
if applyErr := wfs.applyLocalMetadataEvent(context.Background(), event); applyErr != nil {
glog.Warningf("saveEntry %s: best-effort metadata apply failed: %v", path, applyErr)
wfs.inodeToPath.InvalidateChildrenCache(util.FullPath(parentDir))
}
return fuse.OK
}
func (wfs *WFS) mapPbIdFromFilerToLocal(entry *filer_pb.Entry) {
if entry.Attributes == nil {
return
}
entry.Attributes.Uid, entry.Attributes.Gid = wfs.option.UidGidMapper.FilerToLocal(entry.Attributes.Uid, entry.Attributes.Gid)
}
func (wfs *WFS) mapPbIdFromLocalToFiler(entry *filer_pb.Entry) {
if entry.Attributes == nil {
return
}
entry.Attributes.Uid, entry.Attributes.Gid = wfs.option.UidGidMapper.LocalToFiler(entry.Attributes.Uid, entry.Attributes.Gid)
}
// sanitizeFuseName scrubs a name arriving from the kernel before it is placed
// in a proto string field. Linux (and macOS) pass raw bytes for filenames;
// apps like GNOME Trash produce partial files whose names contain binary
// payloads. Proto3 `string` fields require valid UTF-8, so an unsanitized
// name causes gRPC to fail the whole AssignVolume / CreateEntry / DeleteEntry
// RPC with "grpc: error while marshaling: string field contains invalid
// UTF-8", which surfaces to userspace as EIO. Sanitizing at every FUSE
// boundary keeps filer RPCs marshalable and prevents a single ill-named file
// from poisoning the shared gRPC channel for every other in-flight request.
//
// Delegates to util.SanitizeUTF8Name so the replacement character is chosen
// in exactly one place across the codebase.
func sanitizeFuseName(name string) string {
return util.SanitizeUTF8Name(name)
}
func checkName(name string) (string, fuse.Status) {
name = sanitizeFuseName(name)
// The Linux FUSE kernel module enforces NAME_MAX=255 at the VFS layer.
// Return ENAMETOOLONG early to avoid creating entries that cannot be
// looked up via normal syscalls (stat, chmod, etc.).
if len(name) > 255 {
return name, fuse.Status(syscall.ENAMETOOLONG)
}
return name, fuse.OK
}