source: rtems/cpukit/libfs/src/imfs/imfs_link.c @ a5305f6b

4.104.114.84.95
Last change on this file since a5305f6b was a5305f6b, checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/17/04 at 08:34:41

Remove stray white spaces.

  • Property mode set to 100644
File size: 1.6 KB
Line 
1/*
2 *  IMFS_link
3 *
4 *  The following rouine creates a new link node under parent with the
5 *  name given in name.  The link node is set to point to the node at
6 *  to_loc.
7 *
8 *  COPYRIGHT (c) 1989-1999.
9 *  On-Line Applications Research Corporation (OAR).
10 *
11 *  The license and distribution terms for this file may be
12 *  found in the file LICENSE in this distribution or at
13 *  http://www.rtems.com/license/LICENSE.
14 *
15 *  $Id$
16 */
17
18#if HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <errno.h>
23#include "imfs.h"
24#include <rtems/libio_.h>
25#include <rtems/seterr.h>
26
27int IMFS_link(
28  rtems_filesystem_location_info_t  *to_loc,      /* IN */
29  rtems_filesystem_location_info_t  *parent_loc,  /* IN */
30  const char                        *token        /* IN */
31)
32{
33  IMFS_types_union   info;
34  IMFS_jnode_t      *new_node;
35  char               new_name[ IMFS_NAME_MAX + 1 ];
36  int                i;
37
38  /*
39   *  Verify this node can be linked to.
40   */
41
42  info.hard_link.link_node = to_loc->node_access;
43  if ( info.hard_link.link_node->st_nlink >= LINK_MAX )
44    rtems_set_errno_and_return_minus_one( EMLINK );
45
46  /*
47   * Remove any separators at the end of the string.
48   */
49
50  IMFS_get_token( token, new_name, &i );
51
52  /*
53   *  Create a new link node.
54   */
55
56  new_node = IMFS_create_node(
57    parent_loc,
58    IMFS_HARD_LINK,
59    new_name,
60    ( S_IFLNK | ( S_IRWXU | S_IRWXG | S_IRWXO )),
61    &info
62  );
63
64  if ( !new_node )
65    rtems_set_errno_and_return_minus_one( ENOMEM );
66
67  /*
68   * Increment the link count of the node being pointed to.
69   */
70
71  info.hard_link.link_node->st_nlink++;
72  IMFS_update_ctime( info.hard_link.link_node );
73
74  return 0;
75}
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