Perl-LockDev 1.0.3 - LockDev - Perl extension to manage device lockfiles.

The LockDev methods act on device locks normally located in /var/lock. The lock is acquired creating a pair of files hardlinked between them and named after the device name (as mandated by FSSTND) and the device's major and minor numbers (as in SVr4 locks). This permits to circumvent a problem using only the FSSTND lock method when the same device exists under different names (for convenience or when a device must be accessible by more than one group of users).

The lock file names are typically in the form LCK..ttyS1 and LCK.004.065, and their content is the pid of the process who owns the lock.