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/*

 * Copyright (c) 1990 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/*

FUNCTION

<<rename>>---rename a file

INDEX

        rename

ANSI_SYNOPSIS

        #include <stdio.h>

        int rename(const char *<[old]>, const char *<[new]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        int rename(<[old]>, <[new]>)

        char *<[old]>;

        char *<[new]>;

DESCRIPTION

Use <<rename>> to establish a new name (the string at <[new]>) for a

file now known by the string at <[old]>.  After a successful

<<rename>>, the file is no longer accessible by the string at <[old]>.

If <<rename>> fails, the file named <<*<[old]>>> is unaffected.  The

conditions for failure depend on the host operating system.

RETURNS

The result is either <<0>> (when successful) or <<-1>> (when the file

could not be renamed).

PORTABILITY

ANSI C requires <<rename>>, but only specifies that the result on

failure be nonzero.  The effects of using the name of an existing file

as <<*<[new]>>> may vary from one implementation to another.

Supporting OS subroutines required: <<link>>, <<unlink>>, or <<rename>>.

*/

#include <_ansi.h>

#include <reent.h>

#include <stdio.h>

#include <sys/unistd.h>

#ifndef _REENT_ONLY

int

_DEFUN(rename, (old, new),

       _CONST char *old _AND

       _CONST char *new)

{

  return _rename_r (_REENT, old, new);

}

#endif