From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/posix/rename.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 sysdeps/posix/rename.c (limited to 'sysdeps/posix/rename.c') diff --git a/sysdeps/posix/rename.c b/sysdeps/posix/rename.c new file mode 100644 index 0000000000..3245f9cf9c --- /dev/null +++ b/sysdeps/posix/rename.c @@ -0,0 +1,50 @@ +/* Copyright (C) 1991, 1992 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + +/* Rename the file OLD to NEW. */ +int +DEFUN(rename, (old, new), CONST char *old AND CONST char *new) +{ + int save = errno; + if (__link(old, new) < 0) + { + if (errno == EEXIST) + { + 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) + errno = save; + return -1; + } + return 0; +} -- cgit v1.2.1