36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
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/* Copyright (C) 1991-2022 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 <unistd.h>
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/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
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open on the same file as FD is. Return FD2 or -1. */
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int
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__dup2 (int fd, int fd2)
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{
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int flags = 0;
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if (fd2 == fd)
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/* See the comment in dup3. */
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flags = -1;
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return __dup3 (fd, fd2, flags);
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}
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libc_hidden_def (__dup2)
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weak_alias (__dup2, dup2)
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