source: rtems/c/src/exec/libfs/src/imfs/imfs_rmnod.c @ 74e0ba5

4.104.114.84.95
Last change on this file since 74e0ba5 was 74e0ba5, checked in by Joel Sherrill <joel.sherrill@…>, on Jan 8, 2002 at 12:05:36 PM

2002-01-07 Ralf Corsepius <corsepiu@…>

  • src/imfs/imfs_load_tar.c: Add include <sys/types.h>. Add include <sys/stat.h>. Add include <fcntl.h>.
  • src/imfs/imfs_rmnod.c: Add include <stdlib.h>.
  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  IMFS Node Removal Handler
3 *
4 *  This file contains the handler used to remove a node when a file type
5 *  does not require special actions.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  $Id$
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <stdlib.h>
22
23#include <rtems.h>
24#include <rtems/libio.h>
25#include <rtems/libio_.h>
26
27#include "imfs.h"
28
29/*
30 *  IMFS_rmnod
31 */
32
33int IMFS_rmnod(
34  rtems_filesystem_location_info_t      *pathloc       /* IN */
35)
36{
37  IMFS_jnode_t *the_jnode; 
38
39  the_jnode = (IMFS_jnode_t *) pathloc->node_access;
40
41  /*
42   * Take the node out of the parent's chain that contains this node
43   */
44
45  if ( the_jnode->Parent != NULL ) {
46    Chain_Extract( (Chain_Node *) the_jnode );
47    the_jnode->Parent = NULL;
48  }
49
50  /*
51   * Decrement the link counter and see if we can free the space.
52   */
53
54  the_jnode->st_nlink--;
55  IMFS_update_ctime( the_jnode );
56
57  /*
58   * The file cannot be open and the link must be less than 1 to free.
59   */
60
61  if ( !rtems_libio_is_file_open( the_jnode ) && (the_jnode->st_nlink < 1) ) {
62
63    /*
64     * Is rtems_filesystem_current this node?
65     */
66
67    if ( rtems_filesystem_current.node_access == pathloc->node_access )
68       rtems_filesystem_current.node_access = NULL;
69
70    /*
71     * Free memory associated with a memory file.
72     */
73
74    free( the_jnode );
75  }
76
77  return 0;
78
79}
80
81
82
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