source: rtems/c/src/lib/libc/unlink.c @ b2b4835

4.104.114.84.95
Last change on this file since b2b4835 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 *  unlink() - POSIX 1003.1b - 5.5.1 - Remove an existing link
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.OARcorp.com/rtems/license.html.
10 *
11 *  $Id$
12 */
13
14#include <errno.h>
15
16#include "libio_.h"
17
18int unlink(
19  const char *path
20)
21{
22  rtems_filesystem_location_info_t  loc;
23  int                               result;
24
25  /*
26   * Get the node to be unlinked.
27   */
28
29  result = rtems_filesystem_evaluate_path( path, 0, &loc, FALSE );
30  if ( result != 0 )
31     return -1;
32 
33  if ( !loc.ops->node_type ) {
34    rtems_filesystem_freenode( &loc );
35    set_errno_and_return_minus_one( ENOTSUP );
36  }
37
38  if (  (*loc.ops->node_type)( &loc ) == RTEMS_FILESYSTEM_DIRECTORY ) {
39    rtems_filesystem_freenode( &loc );
40    set_errno_and_return_minus_one( EISDIR );
41  }
42
43  if ( !loc.ops->unlink ) {
44    rtems_filesystem_freenode( &loc );
45    set_errno_and_return_minus_one( ENOTSUP );
46  }
47
48  result = (*loc.ops->unlink)( &loc );
49
50  rtems_filesystem_freenode( &loc );
51 
52  return result;
53}
54
55/*
56 *  _unlink_r
57 *
58 *  This is the Newlib dependent reentrant version of unlink().
59 */
60
61#if defined(RTEMS_NEWLIB)
62
63#include <reent.h>
64
65int _unlink_r(
66  struct _reent *ptr,
67  const char    *path
68)
69{
70  return unlink( path );
71}
72#endif
73
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