75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
package localsink
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import (
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"os"
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"path/filepath"
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"testing"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/replication/source"
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)
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// TestCreateEntry_OverwriteReadOnlyFile reproduces a bug where
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// filer.backup receives a create event (0-byte, mode 0400) followed by
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// an update event (with chunks) for the same file. The update event
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// calls CreateEntry again, which fails with "permission denied" because
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// OpenFile with O_RDWR cannot open the 0400 file created by the first
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// event.
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func TestCreateEntry_OverwriteReadOnlyFile(t *testing.T) {
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tmpDir := t.TempDir()
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sink := &LocalSink{}
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sink.initialize(tmpDir, false)
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sink.SetSourceFiler(&source.FilerSource{})
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key := filepath.Join(tmpDir, "objects", "5c", "9fb207")
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// Create event: 0-byte file with mode 0400 (metadata only, no chunks)
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createEntry := &filer_pb.Entry{
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Attributes: &filer_pb.FuseAttributes{
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FileMode: uint32(0400),
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},
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}
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if err := os.MkdirAll(filepath.Dir(key), 0755); err != nil {
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t.Fatalf("mkdir: %v", err)
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}
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if err := sink.CreateEntry(key, createEntry, nil); err != nil {
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t.Fatalf("CreateEntry (create event) failed: %v", err)
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}
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// Verify: 0-byte, 0400 file exists
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fi, err := os.Stat(key)
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if err != nil {
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t.Fatalf("stat after create event: %v", err)
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}
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if fi.Size() != 0 {
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t.Errorf("expected 0 bytes after create event, got %d", fi.Size())
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}
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if fi.Mode().Perm() != 0400 {
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t.Fatalf("expected 0400 after create event, got %o", fi.Mode().Perm())
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}
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// Update event: same file, now with content (simulated by entry.Content)
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updateEntry := &filer_pb.Entry{
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Attributes: &filer_pb.FuseAttributes{
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FileMode: uint32(0400),
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FileSize: 552,
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},
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Content: []byte("git object data placeholder"),
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}
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if err := sink.CreateEntry(key, updateEntry, nil); err != nil {
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t.Fatalf("CreateEntry (update event) failed on read-only file: %v", err)
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}
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// Verify: file has content and correct permissions
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fi, err = os.Stat(key)
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if err != nil {
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t.Fatalf("stat after update event: %v", err)
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}
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if fi.Size() == 0 {
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t.Errorf("expected non-zero size after update event, got 0")
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}
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if fi.Mode().Perm() != 0400 {
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t.Errorf("expected 0400 after update event, got %o", fi.Mode().Perm())
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}
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}
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