linux man page for lock

UNIMPLEMENTED(2)					     Linux Programmer's Manual						  UNIMPLEMENTED(2)

NAME
       afs_syscall,  break,  ftime, getpmsg, gtty, lock, madvise1, mpx, prof, profil, putpmsg, security, stty, tuxcall, ulimit, vserver - unimple-
       mented system calls

SYNOPSIS
       Unimplemented system calls.

DESCRIPTION
       These system calls are not implemented in the Linux 2.6.22 kernel.

RETURN VALUE
       These system calls always return -1 and set errno to ENOSYS.

NOTES
       Note that ftime(3), profil(3) and ulimit(3) are implemented as library functions.

       Some system calls, like alloc_hugepages(2), free_hugepages(2), ioperm(2), iopl(2), and vm86(2) only exist on certain architectures.

       Some system calls, like ipc(2), create_module(2), init_module(2), and delete_module(2) only exist when the Linux kernel was built with sup-
       port for them.

SEE ALSO
       syscalls(2)

COLOPHON
       This  page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2007-07-05							  UNIMPLEMENTED(2)