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.\" Copyright 1995 Michael Chastain (mec@shell.portal.com), 15 April 1995.
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.\"
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.\" %%%LICENSE_START(GPLv2+_DOC_FULL)
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual; if not, see
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.\" <http://www.gnu.org/licenses/>.
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.\" %%%LICENSE_END
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.\"
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.\" Updated, aeb, 980612
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.\"
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.TH UNIMPLEMENTED 2 2017-09-15 "Linux" "Linux Programmer's Manual"
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.SH NAME
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afs_syscall, break, fattach, fdetach, ftime, getmsg, getpmsg, gtty, isastream,
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lock, madvise1, mpx, prof, profil, putmsg, putpmsg, security,
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stty, tuxcall, ulimit, vserver \- unimplemented system calls
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.SH SYNOPSIS
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Unimplemented system calls.
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.SH DESCRIPTION
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These system calls are not implemented in the Linux kernel.
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.SH RETURN VALUE
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These system calls always return \-1 and set
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.I errno
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to
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.BR ENOSYS .
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.SH NOTES
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Note that
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.BR ftime (3),
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.BR profil (3),
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and
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.BR ulimit (3)
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are implemented as library functions.
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.PP
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Some system calls, like
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.BR alloc_hugepages (2),
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.BR free_hugepages (2),
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.BR ioperm (2),
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.BR iopl (2),
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and
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.BR vm86 (2)
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exist only on certain architectures.
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.PP
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Some system calls, like
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.BR ipc (2),
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.BR create_module (2),
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.BR init_module (2),
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and
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.BR delete_module (2)
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exist only when the Linux kernel was built with support for them.
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.SH SEE ALSO
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.BR syscalls (2)
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.SH COLOPHON
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This page is part of release 4.15 of the Linux
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.I man-pages
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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\%https://www.kernel.org/doc/man\-pages/.
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