| 99 | } |
| 100 | |
| 101 | func (r *remoteImage) RawConfigFile() ([]byte, error) { |
| 102 | r.configLock.Lock() |
| 103 | defer r.configLock.Unlock() |
| 104 | if r.config != nil { |
| 105 | return r.config, nil |
| 106 | } |
| 107 | |
| 108 | m, err := partial.Manifest(r) |
| 109 | if err != nil { |
| 110 | return nil, err |
| 111 | } |
| 112 | |
| 113 | if m.Config.Data != nil { |
| 114 | if err := verify.Descriptor(m.Config); err != nil { |
| 115 | return nil, err |
| 116 | } |
| 117 | r.config = m.Config.Data |
| 118 | return r.config, nil |
| 119 | } |
| 120 | |
| 121 | body, err := r.fetcher.fetchBlob(r.ctx, m.Config.Size, m.Config.Digest) |
| 122 | if err != nil { |
| 123 | return nil, err |
| 124 | } |
| 125 | defer body.Close() |
| 126 | |
| 127 | r.config, err = io.ReadAll(body) |
| 128 | if err != nil { |
| 129 | return nil, err |
| 130 | } |
| 131 | return r.config, nil |
| 132 | } |
| 133 | |
| 134 | // Descriptor retains the original descriptor from an index manifest. |
| 135 | // See partial.Descriptor. |