On Mon, Oct 13, 2025 at 11:26:39AM -0700, Russ Allbery wrote: > Josh Triplett <[email protected]> writes: > > > - Software should not use existence-based lockfiles (where the existence > > of the lockfile constitutes holding the lock); software should use > > file-based locking (`flock`) on an appropriate file instead. > > - Where possible, software should apply `flock` to an appropriate target > > file rather than a dedicated lockfile. For instance, if locking a > > device or a data file, software should `flock` the device file or data > > file, rather than creating a separate file to lock. > > Way back in the day, it used to matter whether you used flock or fcntl and > one type of lock was potentially invisible to the other type of lock. Has > this been fixed, or is that still a concern?
There are also issues with NFS to consider. Cheers, -- Bill. <[email protected]> Imagine a large red swirl here.
