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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <not-cancel.h>
#include <fcntl.h>
#include <unistd.h>
/* F_DUPFD expects the target fd to be closed before calling it; if
we close first we create a race condition where the fd could be
reused before we call fcntl. Solaris solves this by providing
F_DUP2FD, which is atomic in this regard. */
int
__dup2 (fd, fd2)
int fd;
int fd2;
{
return fcntl_not_cancel (fd, F_DUP2FD, fd2);
}
libc_hidden_def (__dup2)
weak_alias (__dup2, dup2)
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