манипулировать файловым дескриптором (manipulate file descriptor)
Смотри также (See also)
dup2(2), flock(2), open(2), socket(2), lockf(3), capabilities(7),
feature_test_macros(7), lslocks(8)
locks.txt, mandatory-locking.txt, and dnotify.txt in the Linux
kernel source directory Documentation/filesystems/ (on older
kernels, these files are directly under the Documentation/
directory, and mandatory-locking.txt is called mandatory.txt)