source: rtems/cpukit/libfs/src/dosfs/msdos_rmnod.c @ c499856

4.115
Last change on this file since c499856 was c499856, checked in by Chris Johns <chrisj@…>, on Mar 20, 2014 at 9:10:47 PM

Change all references of rtems.com to rtems.org.

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/**
2 * @file
3 *
4 * @brief Remove Node from MSDOS Directory
5 * @ingroup libfs_msdos MSDOS FileSystem
6 */
7
8/*
9 *  Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
10 *  Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru>
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18  #include "config.h"
19#endif
20
21#include "msdos.h"
22
23int
24msdos_rmnod(const rtems_filesystem_location_info_t *parent_pathloc,
25            const rtems_filesystem_location_info_t *pathloc)
26{
27    int                rc = RC_OK;
28    msdos_fs_info_t   *fs_info = pathloc->mt_entry->fs_info;
29    fat_file_fd_t     *fat_fd = pathloc->node_access;
30
31    if (fat_fd->fat_file_type == MSDOS_DIRECTORY)
32    {
33        bool is_empty = false;
34
35        /*
36         * You cannot remove a node that still has children
37         */
38        rc = msdos_dir_is_empty(pathloc->mt_entry, fat_fd, &is_empty);
39        if (rc != RC_OK)
40        {
41            return rc;
42        }
43
44        if (!is_empty)
45        {
46            rtems_set_errno_and_return_minus_one(ENOTEMPTY);
47        }
48
49        /*
50         * We deny attempts to delete open directory (if directory is current
51         * directory we assume it is open one)
52         */
53        if (fat_fd->links_num > 1)
54        {
55            rtems_set_errno_and_return_minus_one(EBUSY);
56        }
57
58        /*
59         * You cannot remove a mountpoint.
60         * not used - mount() not implemenetd yet.
61         */
62    }
63
64    /* mark file removed */
65    rc = msdos_set_first_char4file_name(pathloc->mt_entry, &fat_fd->dir_pos,
66                                        MSDOS_THIS_DIR_ENTRY_EMPTY);
67    if (rc != RC_OK)
68    {
69        return rc;
70    }
71
72    fat_file_mark_removed(&fs_info->fat, fat_fd);
73
74    return rc;
75}
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