source: rtems/c/src/lib/libc/fchdir.c @ 195ae7ba

4.104.114.84.95
Last change on this file since 195ae7ba was 195ae7ba, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 30, 2000 at 12:31:28 PM

Patch from Chris Johns <cjohns@…> to add fchdir()
functionality to libc and update TODO.

  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  fchdir() - compatible with SVr4, 4.4BSD and X/OPEN - Change Directory
3 *
4 *  COPYRIGHT (c) 1989-2000.
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 <unistd.h>
15#include <sys/stat.h>
16#include <errno.h>
17
18#include <rtems.h>
19#include <rtems/libio.h>
20#include "libio_.h"
21
22int fchdir(
23  int       fd
24)
25{
26  rtems_libio_t *iop;
27 
28  rtems_libio_check_fd( fd );
29  iop = rtems_libio_iop( fd );
30  rtems_libio_check_is_open(iop);
31
32  /*
33   *  Now process the fchmod().
34   */
35
36  rtems_libio_check_permissions( iop, LIBIO_FLAGS_READ );
37
38  /*
39   * Verify you can change directory into this node.
40   */
41
42  if ( !iop->pathinfo.ops ) {
43    set_errno_and_return_minus_one( ENOTSUP );
44  }
45
46  if ( !iop->pathinfo.ops->node_type ) {
47    set_errno_and_return_minus_one( ENOTSUP );
48  }
49
50  if (  (*iop->pathinfo.ops->node_type)( &iop->pathinfo ) !=
51                                          RTEMS_FILESYSTEM_DIRECTORY ) {
52    set_errno_and_return_minus_one( ENOTDIR );
53  }
54 
55  rtems_filesystem_freenode( &rtems_filesystem_current );
56
57  /*
58   * FIXME : I feel there should be another call to
59   *         actually take into account the extra reference to
60   *         this node which we are making here. I can
61   *         see the freenode interface but do not see
62   *         allocnode node interface. It maybe node_type.
63   */
64 
65  rtems_filesystem_current = iop->pathinfo;
66 
67  return 0;
68}
69
Note: See TracBrowser for help on using the repository browser.