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dab9837091
* sysdeps/unix/bsd/isatty.c (__isatty): Don't save and restore errno. * sysdeps/unix/bsd/ptsname.c (__ptsname_r): Return errno value from isatty unmodified. Reported by Bruno Haible <bruno@clisp.org>.
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/* Copyright (C) 1991,95,96,97,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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/* Return 1 if FD is a terminal, 0 if not. */
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int
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__isatty (fd)
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int fd;
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{
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struct sgttyb term;
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return __ioctl (fd, TIOCGETP, &term) == 0;
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}
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weak_alias (__isatty, isatty)
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