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0f93d54cde
This reverts commit 3d3572f590.
Reason for revert: TCGETS etc. work to some extent on at least
a subset of architectures, so there is no pressing need to force
applications off them. Removal of the macros breaks building
the sanitizers, impacting both GCC and LLVM.
Reviewed-by: Sam James <sam@gentoo.org>
30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
/* Test whether a file descriptor refers to a terminal. Linux version.
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Copyright (C) 1991-2025 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, see
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<https://www.gnu.org/licenses/>. */
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#include <termios_internals.h>
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/* Return 1 if FD is a terminal, 0 if not. This simply does a
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TCGETS2 ioctl into a dummy buffer without parsing the result. */
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int
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__isatty (int fd)
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{
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struct termios2 k_termios;
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return INLINE_SYSCALL_CALL (ioctl, fd, TCGETS2, &k_termios) == 0;
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}
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weak_alias (__isatty, isatty)
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