source: rtems/cpukit/libfs/src/imfs/imfs_link.c @ 2bac9489

4.104.115
Last change on this file since 2bac9489 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: 1.6 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, strlen( 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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