file locking done by functions like flock (2) and lockf (3).) All this is invisibleHISTORY POSIX.1-2001, SVr4. SEE ALSO fcntl (2), flock (2) locks.txt and mandatory-locking.txt in the Linuxfile locking done by functions like flock (2) and lockf (3).) All this is invisiblefile locking done by functions like flock (2) and lockf (3).) All this is invisibleargument to the fcntl (2) and flock (2) locking functions. The file descriptorargument to the fcntl (2) and flock (2) locking functions. The file descriptorlimit on the combined number of flock (2) locks and fcntl (2) leases that this