tag

#file-locking

2 posts

LinuxDeep Dive October 3, 2026 8 min read

Linux Open File Description Locks: Byte-Range Coordination Without PID Ownership

Use F_OFD_SETLK byte-range locks with deliberate descriptor ownership, nonblocking conflict handling, safe thread semantics, and explicit portability checks.

#linux#file-locking#fcntl

FreeDOSDeep Dive August 27, 2026 6 min read

FreeDOS SHARE: File Sharing Modes and Byte-Range Locks in Real Mode

How FreeDOS SHARE implements DOS open-sharing rules, tracks byte-range locks by process, reports conflicts, and fits into a practical compatibility test.

#freedos#share#file-locking