Function fsync

pub fn fsync<Fd>(fd: Fd) -> Result<(), Errno> 
where
    Fd: AsFd,

Available on crate feature dep_rustix only.

fsync(fd)—Ensures that file data and metadata is written to the underlying storage device.

On iOS and macOS this isn’t sufficient to ensure that data has reached persistent storage; use fcntl_fullfsync to ensure that.

References

• POSIX
• Linux