{"record":{"id":"b0c8e83713fc34f0","repo":"charmbracelet/crush","slug":"failed-to-create-parent-directories-w","errorCode":null,"errorMessage":"failed to create parent directories: %w","messagePattern":"failed to create parent directories: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/agent/tools/download.go","lineNumber":139,"sourceCode":"\t\t\tif err != nil {\n\t\t\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to create request: %w\", err)\n\t\t\t}\n\n\t\t\treq.Header.Set(\"User-Agent\", \"crush/1.0\")\n\n\t\t\tresp, err := client.Do(req)\n\t\t\tif err != nil {\n\t\t\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to download from URL: %w\", err)\n\t\t\t}\n\t\t\tdefer resp.Body.Close()\n\n\t\t\tif resp.StatusCode != http.StatusOK {\n\t\t\t\treturn fantasy.NewTextErrorResponse(fmt.Sprintf(\"Request failed with status code: %d\", resp.StatusCode)), nil\n\t\t\t}\n\n\t\t\t// Create parent directories if they don't exist\n\t\t\tif err := os.MkdirAll(filepath.Dir(filePath), 0o755); err != nil {\n\t\t\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to create parent directories: %w\", err)\n\t\t\t}\n\n\t\t\t// Create the output file\n\t\t\toutFile, err := os.Create(filePath)\n\t\t\tif err != nil {\n\t\t\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to create output file: %w\", err)\n\t\t\t}\n\t\t\tdefer outFile.Close()\n\n\t\t\t// Copy data without an explicit size limit.\n\t\t\t// The overall download is still constrained by the HTTP client's timeout\n\t\t\t// and any upstream server limits.\n\t\t\tbytesWritten, err := io.Copy(outFile, resp.Body)\n\t\t\tif err != nil {\n\t\t\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to write file: %w\", err)\n\t\t\t}\n\n\t\t\tcontentType := resp.Header.Get(\"Content-Type\")","sourceCodeStart":121,"sourceCodeEnd":157,"githubUrl":"https://github.com/charmbracelet/crush/blob/7944b8e52225d8805e31eacbf7ef24856b0dfb7a/internal/agent/tools/download.go#L121-L157","documentation":"os.MkdirAll failed while creating the parent directories of the destination file path before writing the download. The wrapped error contains the OS-level reason (permission denied, path exists as a file, read-only filesystem, etc.).","triggerScenarios":"The directory portion of workingDir + params.FilePath cannot be created: a parent path component is an existing regular file, the process lacks write permission, or the filesystem is read-only/full.","commonSituations":"file_path points under a path where a file already occupies a directory name (e.g. /tmp/out.txt/sub/dir); downloading into a read-only mount or container layer; destination inside a directory owned by another user.","solutions":["Check the wrapped error: EEXIST on a path component means a file occupies a directory slot — choose a different file_path","Verify write permissions on the destination directory (ls -ld)","Ensure the download target is inside the writable working directory","Free disk space or remount read-only filesystems as writable"],"exampleFix":"// before\nfile_path: \"out.txt/data.zip\"   // out.txt is an existing file\n// after\nfile_path: \"downloads/data.zip\"","handlingStrategy":"validation","validationCode":"parent := filepath.Dir(target)\nif fi, err := os.Stat(parent); err == nil && !fi.IsDir() {\n    return fmt.Errorf(\"%s exists and is not a directory\", parent)\n}\nif err := unix.Access(filepath.Dir(parent), unix.W_OK); err != nil {\n    return fmt.Errorf(\"no write permission for %s: %v\", parent, err)\n}","typeGuard":null,"tryCatchPattern":"if err := os.MkdirAll(dir, 0o755); err != nil {\n    if errors.Is(err, fs.ErrExist) {\n        return fmt.Errorf(\"a file occupies a directory path component: %s\", dir)\n    }\n    if errors.Is(err, fs.ErrPermission) {\n        return fmt.Errorf(\"cannot write to %s: %w\", dir, err)\n    }\n    return err\n}","preventionTips":["Choose a file_path whose parent directories don't collide with existing files","Keep downloads inside the writable working directory","Check df/mount options when targeting containers or network mounts"],"tags":["filesystem","mkdir","permissions"],"backgroundTag":"mkdir-permission-denied","analyzedSha":"7944b8e52225d8805e31eacbf7ef24856b0dfb7a","analyzedAt":"2026-08-29T12:48:59.079Z","schemaVersion":2},"datasetVersion":"2026-08-29T17:17:51.833Z"}