@node lockf
@subsection @code{lockf}
@findex lockf

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/lockf.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@item
On platforms where @code{off_t} is a 32-bit type, this function may not
work correctly across the entire data range of files 2 GiB and larger.
@xref{Large File Support}.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, Cygwin 1.5.x, mingw, MSVC 14, Android 6.0.
@end itemize
