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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

<<remove>>---delete a file's name

INDEX

        remove

INDEX

        _remove_r

ANSI_SYNOPSIS

        #include <stdio.h>

        int remove(char *<[filename]>);

        int _remove_r(struct _reent *<[reent]>, char *<[filename]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        int remove(<[filename]>)

        char *<[filename]>;

        int _remove_r(<[reent]>, <[filename]>)

        struct _reent *<[reent]>;

        char *<[filename]>;

DESCRIPTION

Use <<remove>> to dissolve the association between a particular

filename (the string at <[filename]>) and the file it represents.

After calling <<remove>> with a particular filename, you will no

longer be able to open the file by that name.

In this implementation, you may use <<remove>> on an open file without

error; existing file descriptors for the file will continue to access

the file's data until the program using them closes the file.

The alternate function <<_remove_r>> is a reentrant version.  The

extra argument <[reent]> is a pointer to a reentrancy structure.

RETURNS

<<remove>> returns <<0>> if it succeeds, <<-1>> if it fails.

PORTABILITY

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

failure be nonzero.  The behavior of <<remove>> when you call it on an

open file may vary among implementations.

Supporting OS subroutine required: <<unlink>>.

*/

#include <_ansi.h>

#include <reent.h>

#include <stdio.h>

int

_DEFUN(_remove_r, (ptr, filename),

       struct _reent *ptr _AND

       _CONST char *filename)

{

  if (_unlink_r (ptr, filename) == -1)

    return -1;

  return 0;

}

#ifndef _REENT_ONLY

int

_DEFUN(remove, (filename),

       _CONST char *filename)

{

  return _remove_r (_REENT, filename);

}

#endif