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+.\" Hey Emacs! This file is -*- nroff -*- source.
+.\"
+.\" Copyright 1995 Michael Chastain (mec@shell.portal.com), 15 April 1995.
+.\"
+.\" This is free documentation; you can redistribute it and/or
+.\" modify it under the terms of the GNU General Public License as
+.\" published by the Free Software Foundation; either version 2 of
+.\" the License, or (at your option) any later version.
+.\"
+.\" The GNU General Public License's references to "object code"
+.\" and "executables" are to be interpreted as the output of any
+.\" document formatting or typesetting system, including
+.\" intermediate and printed output.
+.\"
+.\" This manual is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+.\" GNU General Public License for more details.
+.\"
+.\" You should have received a copy of the GNU General Public
+.\" License along with this manual; if not, write to the Free
+.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
+.\" USA.
+.\"
+.\" Updated, aeb, 980612
+.\"
+.TH UNIMPLEMENTED 2 2003-02-28 "Linux 2.4" "Linux Programmer's Manual"
+.SH NAME
+afs_syscall, break, ftime, getpmsg, gtty, lock, mpx, prof, profil,
+putpmsg, security, stty, ulimit \- unimplemented system calls
+.SH SYNOPSIS
+Unimplemented system calls.
+.SH DESCRIPTION
+These system calls are not implemented in the Linux 2.4 kernel.
+.SH "RETURN VALUE"
+These system calls always return \-1 and set
+.I errno
+to
+.BR ENOSYS .
+.SH NOTES
+Note that
+.IR ftime (3),
+.IR profil (3)
+and
+.IR ulimit (3)
+are implemented as library functions.
+
+Some system calls, like
+.IR alloc_hugepages (2),
+.IR free_hugepages (2),
+.IR ioperm (2),
+.IR iopl (2),
+and
+.IR vm86 (2)
+only exist on certain architectures.
+
+Some system calls, like
+.IR ipc (2)
+and
+.IR {create,init,delete}_module (2)
+only exist when the Linux kernel was built with support for them.
+
+.SH "SEE ALSO"
+.BR obsolete (2)