{"record":{"id":"15015a0bc3bf7911","repo":"GoogleContainerTools/skaffold","slug":"reading-q-in-embedded-filesystem-w","errorCode":null,"errorMessage":"reading %q in embedded filesystem: %w","messagePattern":"reading %q in embedded filesystem: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cmd/skaffold/app/cmd/credits/export.go","lineNumber":52,"sourceCode":"\n// Export writes all the licenses and credit files to the `Path` folder.\nfunc Export(ctx context.Context, out io.Writer) error {\n\tif err := iofs.WalkDir(fs.AssetsFS, \"assets/credits_generated\", func(filePath string, dirEntry iofs.DirEntry, err error) error {\n\t\tnewPath := path.Join(Path, strings.Replace(filePath, \"assets/credits_generated\", \"\", 1))\n\t\tif dirEntry.IsDir() {\n\t\t\terr := os.Mkdir(newPath, 0755)\n\t\t\tif err != nil && !os.IsExist(err) {\n\t\t\t\treturn fmt.Errorf(\"creating directory %q: %w\", newPath, err)\n\t\t\t}\n\t\t} else {\n\t\t\tfile, err := fs.AssetsFS.Open(filePath)\n\t\t\tif err != nil {\n\t\t\t\treturn fmt.Errorf(\"opening %q in embedded filesystem: %w\", filePath, err)\n\t\t\t}\n\n\t\t\tbuf, err := io.ReadAll(file)\n\t\t\tif err != nil {\n\t\t\t\treturn fmt.Errorf(\"reading %q in embedded filesystem: %w\", filePath, err)\n\t\t\t}\n\n\t\t\tif err := os.WriteFile(newPath, buf, 0664); err != nil {\n\t\t\t\treturn fmt.Errorf(\"writing %q to %q: %w\", filePath, newPath, err)\n\t\t\t}\n\t\t}\n\t\treturn nil\n\t}); err != nil {\n\t\treturn err\n\t}\n\n\ts, err := filepath.Abs(Path)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tlog.Printf(\"Successfully exported third party notices to %s\", s)\n\treturn nil","sourceCodeStart":34,"sourceCodeEnd":70,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/cmd/skaffold/app/cmd/credits/export.go#L34-L70","documentation":"Wraps an io.ReadAll failure while draining an opened embedded-asset file during `skaffold credits export`. io.ReadAll on an embedded file essentially only fails on underlying read errors; with go:embed this is rare and usually signals a corrupted binary or a wrapped non-embed FS (e.g. test overlay) whose Read returned an error.","triggerScenarios":"`skaffold credits export` reads an asset via fs.AssetsFS.Open, and the subsequent io.ReadAll(file) returns err != nil — a read/IO failure on the embedded file handle.","commonSituations":"Custom builds where AssetsFS was replaced or wrapped (e.g. by an overlay FS in tests) that errors on Read; extremely rare disk/IO problems; running on exotic platforms with broken file descriptors.","solutions":["Rebuild/reinstall the skaffold binary from official sources","If a custom FS wrapper is in play, verify its Read implementation returns the full embedded contents without error","Retry the export once; if persistent, report the issue with `skaffold version` output"],"exampleFix":"// before\nbuf, err := io.ReadAll(file)\nif err != nil {\n    return fmt.Errorf(\"reading %q in embedded filesystem: %w\", filePath, err)\n}\n// after: nothing to change in caller; verify the embed source instead\n// go:embed all:assets\nvar assets embed.FS  // ensure 'all:' includes dotfiles so paths are not missing","handlingStrategy":"retry","validationCode":"// rare; validate FS wrapper behavior in tests\nfunc TestAssetReadAll(t *testing.T) {\n    f, err := fs.AssetsFS.Open(\"some/asset\")\n    if err != nil { t.Fatal(err) }\n    defer f.Close()\n    if _, err := io.ReadAll(f); err != nil { t.Fatal(err) }\n}","typeGuard":null,"tryCatchPattern":"buf, err := io.ReadAll(file)\nif err != nil {\n    if errors.Is(err, syscall.EIO) { /* retry or report corrupted binary */ }\n    return err\n}","preventionTips":["Use official skaffold binaries","If wrapping AssetsFS in tests, ensure Read implements io.Reader fully","Retry the export once before reporting a bug"],"tags":["go","embedded-filesystem","io"],"backgroundTag":"asset-read-failed","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}