source: rtems/c/src/lib/libc/chdir.c @ 74d5216

4.104.114.84.95
Last change on this file since 74d5216 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: 1.1 KB
Line 
1/* 
2 *  chdir() - POSIX 1003.1b - 5.2.1 - Change Current Working Directory
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 <rtems.h>
15
16#include <unistd.h>
17#include <errno.h>
18
19#include "libio_.h"
20
21int chdir(
22  const char *pathname
23)
24{
25  rtems_filesystem_location_info_t  loc;
26  int                               result;
27
28  /*
29   *  Get the node where we wish to go.
30   */
31
32  result = rtems_filesystem_evaluate_path( pathname, 0, &loc, TRUE );
33  if ( result != 0 )
34     return -1;
35
36  /*
37   * Verify you can change directory into this node.
38   */
39
40  if ( !loc.ops->node_type ) {
41    rtems_filesystem_freenode( &loc );
42    set_errno_and_return_minus_one( ENOTSUP );
43  }
44
45  if (  (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY ) {
46    rtems_filesystem_freenode( &loc );
47    set_errno_and_return_minus_one( ENOTDIR );
48  }
49 
50  rtems_filesystem_freenode( &rtems_filesystem_current );
51   
52  rtems_filesystem_current = loc;
53 
54  return 0;
55}
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