pub fn write_atomic(path: &Path, data: &[u8]) -> Result<()>Expand description
Replace path with data atomically.
The data goes to a uniquely named temp file beside path, gets a
best-effort fsync, and is then renamed over path. Readers see the old
file or the new file, never a mix. Concurrent writers each move their own
complete payload into place, and the last rename wins. A failed write
removes its temp file.
ยงErrors
Returns the IO error when path has no parent directory or file name, or
when the temp file cannot be created, written, or renamed into place.