Package lockdev-devel

The header files for the lockdev library

https://alioth.debian.org/projects/lockdev/

The lockdev library provides a reliable way to put an exclusive lock
on devices using both FSSTND and SVr4 methods. The lockdev-devel
package contains the development headers.

Library Functions (Section 3)
lockdev
The lockdev functions act on device locks normally located in /var/lock . The lock is acquired creating a pair of files hardlinked between them and named after...