/* Copyright (C) 1991, 1992, 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <stdio.h> #include <unistd.h> #include <errno.h> /* Rename the file OLD to NEW. */ int rename (old, new) const char *old; const char *new; { int save = errno; if (__link (old, new) < 0) { if (errno == EEXIST) { __set_errno (save); /* Race condition, required for 1003.1 conformance. */ if (__unlink (new) < 0 || __link (old, new) < 0) return -1; } else return -1; } if (__unlink (old) < 0) { save = errno; if (__unlink (new) == 0) __set_errno (save); return -1; } return 0; }