source: rtems/c/src/lib/libc/eval.c @ df49c60

4.104.114.84.95
Last change on this file since df49c60 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: 1.7 KB
Line 
1/*
2 *  rtems_filesystem_evaluate_path()
3 *
4 *  Routine to seed the evaluate path routine.
5 *
6 *  COPYRIGHT (c) 1989-1999.
7 *  On-Line Applications Research Corporation (OAR).
8 *
9 *  The license and distribution terms for this file may be
10 *  found in the file LICENSE in this distribution or at
11 *  http://www.OARcorp.com/rtems/license.html.
12 *
13 *  $Id$
14 */
15
16#include <rtems.h>
17#include "libio_.h"
18
19int rtems_filesystem_evaluate_path(
20  const char                        *pathname,
21  int                                flags,
22  rtems_filesystem_location_info_t  *pathloc,
23  int                                follow_link
24)
25{
26  int                           i;
27  int                           result;
28  rtems_filesystem_node_types_t type;
29
30  /*
31   * Verify Input parameters.
32   */
33
34  if ( !pathname )
35    set_errno_and_return_minus_one( EFAULT );
36
37  if ( !pathloc )
38    set_errno_and_return_minus_one( EIO );       /* should never happen */
39 
40  /*
41   * Evaluate the path using the optable evalpath.
42   */
43
44  rtems_filesystem_get_start_loc( pathname, &i, pathloc );
45
46  result = (*pathloc->ops->evalpath)( &pathname[i], flags, pathloc );
47
48  /*
49   * Get the Node type and determine if you need to follow the link or
50   * not.
51   */
52
53  if ( (result == 0) && follow_link ) {
54
55    if ( !pathloc->ops->node_type )
56      set_errno_and_return_minus_one( ENOTSUP );
57
58    type = (*pathloc->ops->node_type)( pathloc );
59
60    if ( ( type == RTEMS_FILESYSTEM_HARD_LINK ) ||
61         ( type == RTEMS_FILESYSTEM_SYM_LINK ) ) {
62
63        if ( !pathloc->ops->eval_link )
64          set_errno_and_return_minus_one( ENOTSUP );
65
66         result =  (*pathloc->ops->eval_link)( pathloc, flags );
67 
68    }
69  }
70
71  return result;
72}
73
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