finalClose atomically closes and returns closed status of a file. A true first return value means the file was closed and should be finished, with the error indicating the success or failure of the close. A false first return value indicates the file is not ready to be closed, or is already closed a
()
| 319 | // return value indicates the file is not ready to be closed, or is already |
| 320 | // closed and should in either case not be finished off now. |
| 321 | func (s *sharedPullerState) finalClose() (bool, error) { |
| 322 | s.mut.Lock() |
| 323 | defer s.mut.Unlock() |
| 324 | |
| 325 | if s.closed { |
| 326 | // Already closed |
| 327 | return false, nil |
| 328 | } |
| 329 | |
| 330 | if s.pullNeeded+s.copyNeeded != 0 && s.err == nil { |
| 331 | // Not done yet, and not errored |
| 332 | return false, nil |
| 333 | } |
| 334 | |
| 335 | if s.writer == nil { |
| 336 | // If we didn't even create a temp file up to this point, now is the |
| 337 | // time to do so. This also truncates the file to the correct size |
| 338 | // if we're using sparse file. |
| 339 | if err := s.addWriterLocked(); err != nil { |
| 340 | return false, err |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | if len(s.file.Encrypted) > 0 { |
| 345 | if err := s.finalizeEncrypted(); err != nil && s.err == nil { |
| 346 | // This is our error as we weren't errored before. |
| 347 | s.err = err |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | if s.writer != nil { |
| 352 | if err := s.writer.SyncClose(s.fsync); err != nil && s.err == nil { |
| 353 | // This is our error as we weren't errored before. |
| 354 | s.err = err |
| 355 | } |
| 356 | s.writer = nil |
| 357 | } |
| 358 | |
| 359 | s.closed = true |
| 360 | |
| 361 | // Unhide the temporary file when we close it, as it's likely to |
| 362 | // immediately be renamed to the final name. If this is a failed temp |
| 363 | // file we will also unhide it, but I'm fine with that as we're now |
| 364 | // leaving it around for potentially quite a while. |
| 365 | s.fs.Unhide(s.tempName) |
| 366 | |
| 367 | return true, s.err |
| 368 | } |
| 369 | |
| 370 | // finalizeEncrypted adds a trailer to the encrypted file containing the |
| 371 | // serialized FileInfo and the length of that FileInfo. When initializing a |