source: rtems/c/src/exec/libcsupport/src/eval.c @ 9c3fa30

4.104.114.84.95
Last change on this file since 9c3fa30 was 9c3fa30, checked in by Joel Sherrill <joel.sherrill@…>, on 09/28/00 at 20:19:23

2000-09-28 Joel Sherrill <joel@…>

  • libc/libio.h (rtems_filesystem_file_handlers_r, rtems_filesystem_operations_table): Added _h to all structure fields to indicate they are "handlers".
  • libc/libio_.h, libc/chdir.c, libc/chmod.c, libc/chown.c, libc/close.c, libc/eval.c, libc/fchdir.c, libc/fchmod.c, libc/fcntl.c, libc/fdatasync.c, libc/fstat.c, libc/fsync.c, libc/ftruncate.c, libc/getdents.c, libc/imfs_eval.c, libc/imfs_unlink.c, libc/ioctl.c, libc/ioman.c, libc/link.c, libc/lseek.c, libc/mknod.c, libc/mount.c, libc/open.c, libc/read.c, libc/readlink.c, libc/rmdir.c, libc/stat.c, libc/symlink.c, libc/unlink.c, libc/unmount.c, libc/utime.c, libc/write.c: Modified to reflect above name change.
  • Property mode set to 100644
File size: 1.8 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  if ( !pathloc->ops->evalpath_h )
47    set_errno_and_return_minus_one( ENOTSUP );
48
49  result = (*pathloc->ops->evalpath_h)( &pathname[i], flags, pathloc );
50
51  /*
52   * Get the Node type and determine if you need to follow the link or
53   * not.
54   */
55
56  if ( (result == 0) && follow_link ) {
57
58    if ( !pathloc->ops->node_type_h )
59      set_errno_and_return_minus_one( ENOTSUP );
60
61    type = (*pathloc->ops->node_type_h)( pathloc );
62
63    if ( ( type == RTEMS_FILESYSTEM_HARD_LINK ) ||
64         ( type == RTEMS_FILESYSTEM_SYM_LINK ) ) {
65
66        if ( !pathloc->ops->eval_link_h )
67          set_errno_and_return_minus_one( ENOTSUP );
68
69         result =  (*pathloc->ops->eval_link_h)( pathloc, flags );
70 
71    }
72  }
73
74  return result;
75}
76
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