Files
s3/weed/mount/meta_cache/id_mapper.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

102 lines
2.4 KiB
Go

package meta_cache
import (
"fmt"
"strconv"
"strings"
)
type UidGidMapper struct {
uidMapper *IdMapper
gidMapper *IdMapper
}
type IdMapper struct {
localToFiler map[uint32]uint32
filerToLocal map[uint32]uint32
}
// UidGidMapper translates local uid/gid to filer uid/gid
// The local storage always persists the same as the filer.
// The local->filer translation happens when updating the filer first and later saving to meta_cache.
// And filer->local happens when reading from the meta_cache.
func NewUidGidMapper(uidPairsStr, gidPairStr string) (*UidGidMapper, error) {
uidMapper, err := newIdMapper(uidPairsStr)
if err != nil {
return nil, err
}
gidMapper, err := newIdMapper(gidPairStr)
if err != nil {
return nil, err
}
return &UidGidMapper{
uidMapper: uidMapper,
gidMapper: gidMapper,
}, nil
}
func (m *UidGidMapper) LocalToFiler(uid, gid uint32) (uint32, uint32) {
return m.uidMapper.LocalToFiler(uid), m.gidMapper.LocalToFiler(gid)
}
func (m *UidGidMapper) FilerToLocal(uid, gid uint32) (uint32, uint32) {
return m.uidMapper.FilerToLocal(uid), m.gidMapper.FilerToLocal(gid)
}
func (m *IdMapper) LocalToFiler(id uint32) uint32 {
value, found := m.localToFiler[id]
if found {
return value
}
return id
}
func (m *IdMapper) FilerToLocal(id uint32) uint32 {
value, found := m.filerToLocal[id]
if found {
return value
}
return id
}
func newIdMapper(pairsStr string) (*IdMapper, error) {
localToFiler, filerToLocal, err := parseUint32Pairs(pairsStr)
if err != nil {
return nil, err
}
return &IdMapper{
localToFiler: localToFiler,
filerToLocal: filerToLocal,
}, nil
}
func parseUint32Pairs(pairsStr string) (localToFiler, filerToLocal map[uint32]uint32, err error) {
if pairsStr == "" {
return
}
localToFiler = make(map[uint32]uint32)
filerToLocal = make(map[uint32]uint32)
for _, pairStr := range strings.Split(pairsStr, ",") {
pair := strings.Split(pairStr, ":")
localUidStr, filerUidStr := pair[0], pair[1]
localUid, localUidErr := strconv.Atoi(localUidStr)
if localUidErr != nil {
err = fmt.Errorf("failed to parse local %s: %v", localUidStr, localUidErr)
return
}
filerUid, filerUidErr := strconv.Atoi(filerUidStr)
if filerUidErr != nil {
err = fmt.Errorf("failed to parse remote %s: %v", filerUidStr, filerUidErr)
return
}
localToFiler[uint32(localUid)] = uint32(filerUid)
filerToLocal[uint32(filerUid)] = uint32(localUid)
}
return
}