dfbad9c855
1998-02-20 18:43 Ulrich Drepper <drepper@cygnus.com> * hesiod/hesiod.c: Pretty print. Don't use __ protected names. * iconvdata/8bit-gap.c: Likewise. * iconvdata/8bit-generic.c: Likewise. * iconvdata/iso6937.c: Likewise. * iconvdata/iso8859-1.c: Likewise. * iconvdata/sjis.c: Likewise. * iconvdata/t61.c: Likewise. 1998-02-20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/bits/termios.h: Replace all negative feature tests by positive feature tests. 1998-02-19 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/unlockpt.c: Always return a value. 1998-02-20 Ulrich Drepper <drepper@cygnus.com> * elf/dlvsym.c (dlvsym_doit): More corrections. Patch by Andreas Jaeger.
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <errno.h>
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#include <stdlib.h>
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/* Given a fd on a master pseudoterminal, clear a kernel lock so that
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the slave can be opened. This is to avoid a race between opening the
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master and calling grantpt() to take possession of the slave. */
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int
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unlockpt (fd)
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int fd __attribute__ ((unused));
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{
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#ifdef TIOCSPTLCK
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int serrno = errno;
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int unlock = 0;
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if (ioctl (fd, TIOCSPTLCK, &unlock))
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{
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if (errno == EINVAL)
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{
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__set_errno (serrno);
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return 0;
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}
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else
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return -1;
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}
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#endif
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/* On pre-/dev/ptmx kernels this function should be a no-op. */
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return 0;
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}
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