source: rtems/cpukit/libfs/src/imfs/imfs_unlink.c @ 7baa484

4.104.115
Last change on this file since 7baa484 was 7baa484, checked in by Chris Johns <chrisj@…>, on 06/12/09 at 01:53:33

2009-06-12 Chris Johns <chrisj@…>

  • libblock/src/bdbuf.c: Update comments.
  • libblock/src/bdpart.c, libblock/src/ide_part_table.c: Get the device from the rdev field of the stat buf.
  • libcsupport/include/rtems/libio.h: Add a path length to evalpath handler. Add parent locations to rmmod and unlink handlers.
  • libcsupport/include/rtems/libio_.h: Add a path length to rtems_filesystem_evaluate_path. Add rtems_filesystem_evaluate_relative_path, rtems_filesystem_dirname, and rtems_filesystem_prefix_separators. Remove rtems_filesystem_evaluate_parent.
  • libcsupport/src/base_fs.c, libcsupport/src/chdir.c, libcsupport/src/chmod.c, libcsupport/src/chown.c, libcsupport/src/chroot.c, libcsupport/src/fchdir.c, libcsupport/src/link.c, libcsupport/src/mount.c, libcsupport/src/open.c, libcsupport/src/privateenv.c, libcsupport/src/readlink.c, libcsupport/src/unmount.c, libcsupport/src/utime.c, libcsupport/src/unmount.c, libcsupport/src/utime.c, libfs/src/devfs/devfs.h, libfs/src/devfs/devfs_eval.c, libfs/src/devfs/devstat.c, libfs/src/dosfs/msdos_create.c, libfs/src/dosfs/msdos_misc.c, libfs/src/imfs/imfs.h, libfs/src/imfs/imfs_eval.c, libfs/src/imfs/imfs_load_tar.c, libfs/src/imfs/ioman.c, libfs/src/pipe/pipe.c, libmisc/fsmount/fsmount.c, libnetworking/lib/ftpfs.c: Add the length parameter to the eval call.
  • libcsupport/src/eval.c: Add rtems_filesystem_prefix_separators, rtems_filesystem_dirname, rtems_filesystem_evaluate_relative_path. Add the length parameter to the eval call.
  • libcsupport/src/rmdir.c: Find the parent pathloc then the node pathloc from that node. Remove the call to find the parent given the node pathloc.
  • libcsupport/src/stat.c: Add the length parameter to the eval call. Set the device into the rdev field.
  • libcsupport/src/unlink.c: Find the parent pathloc then the node pathloc from that node. Remove the call to find the parent given the node pathloc.
  • libfs/src/dosfs/fat.c, libfs/src/dosfs/msdos_format.c: Get the disk device number from the stat rdev field.
  • libfs/src/dosfs/msdos.h: Add the length parameter to the eval call. Add the parent pathloc to the rmnod handler.
  • libfs/src/dosfs/msdos_dir.c: Add the parent pathloc to the rmnod handler.
  • libfs/src/dosfs/msdos_eval.c: Add the length parameter to the eval and token call.
  • libfs/src/imfs/imfs_directory.c: Add the parent pathloc to the rmnod handler.
  • libfs/src/imfs/imfs_fchmod.c: Do not test the mode flags for only the allowed flags. Add the missing flags spec'ed in the POSIX standard.
  • libfs/src/imfs/imfs_fsunmount.c, libfs/src/imfs/imfs_rmnod.c, libfs/src/imfs/imfs_unlink.c, libfs/src/imfs/memfile.c: Add the parent node. Currently ignored in the IMFS.
  • libfs/src/imfs/imfs_stat.c: Return the device number in the rdev field.
  • libfs/src/imfs/imfs_mknod.c, libfs/src/imfs/imfs_symlink.c : Add the length parameter to the token call.
  • libfs/src/nfsclient/src/nfs.c: Add the length parameter to the eval call and parent node to the rmnod and unlink command.
  • libmisc/shell/internal.h: Remove the libc mounter decl to make public.
  • libmisc/shell/main_mount.c: Add support for hooking external mount support for new file systems.
  • libmisc/shell/shell.h: Add helper functions for the mount command.
  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 *  IMFS_unlink
3 *
4 *  Routine to remove a link node from the tree.
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.rtems.com/license/LICENSE.
12 *
13 *  $Id$
14 */
15
16#if HAVE_CONFIG_H
17#include "config.h"
18#endif
19
20#include <errno.h>
21#include <stdlib.h>
22
23#include "imfs.h"
24#include <rtems/libio_.h>
25#include <rtems/seterr.h>
26
27int IMFS_unlink(
28  rtems_filesystem_location_info_t  *parentloc, /* IN */
29  rtems_filesystem_location_info_t  *loc        /* IN */
30)
31{
32  IMFS_jnode_t                      *node;
33  rtems_filesystem_location_info_t   the_link;
34  int                                result = 0;
35
36  node = loc->node_access;
37
38  /*
39   * Decrement the link counter of node pointed to and free the
40   * space.
41   */
42
43  /*
44   * If this is the last last pointer to the node
45   * free the node.
46   */
47
48  if ( node->type == IMFS_HARD_LINK ) {
49
50    if ( !node->info.hard_link.link_node )
51      rtems_set_errno_and_return_minus_one( EINVAL );
52
53    the_link = *loc;
54    the_link.node_access = node->info.hard_link.link_node;
55    IMFS_Set_handlers( &the_link );
56
57    /*
58     *  If removing the last hard link to a node, then we need
59     *  to remove the node that is a link and the node itself.
60     */
61
62    if ( node->info.hard_link.link_node->st_nlink == 1)
63    {
64        result = (*the_link.handlers->rmnod_h)( parentloc, &the_link );
65        if ( result != 0 )
66            return -1;
67    }
68    else
69    {
70        node->info.hard_link.link_node->st_nlink --;
71        IMFS_update_ctime( node->info.hard_link.link_node );
72    }
73  }
74
75  /*
76   *  Now actually free the node we were asked to free.
77   */
78
79  result = (*loc->handlers->rmnod_h)( parentloc, loc );
80
81  return result;
82}
Note: See TracBrowser for help on using the repository browser.