source: branches/stable/mindi-busybox/e2fsprogs/ext2fs/newdir.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 1.4 KB
Line 
1/*
2 * newdir.c --- create a new directory block
3 *
4 * Copyright (C) 1994, 1995 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12#include <stdio.h>
13#include <string.h>
14#if HAVE_UNISTD_H
15#include <unistd.h>
16#endif
17
18#include "ext2_fs.h"
19#include "ext2fs.h"
20
21#ifndef EXT2_FT_DIR
22#define EXT2_FT_DIR     2
23#endif
24
25/*
26 * Create new directory block
27 */
28errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
29                   ext2_ino_t parent_ino, char **block)
30{
31    struct ext2_dir_entry   *dir = NULL;
32    errcode_t       retval;
33    char            *buf;
34    int         rec_len;
35    int         filetype = 0;
36
37    EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
38
39    retval = ext2fs_get_mem(fs->blocksize, &buf);
40    if (retval)
41        return retval;
42    memset(buf, 0, fs->blocksize);
43    dir = (struct ext2_dir_entry *) buf;
44    dir->rec_len = fs->blocksize;
45
46    if (dir_ino) {
47        if (fs->super->s_feature_incompat &
48            EXT2_FEATURE_INCOMPAT_FILETYPE)
49            filetype = EXT2_FT_DIR << 8;
50        /*
51         * Set up entry for '.'
52         */
53        dir->inode = dir_ino;
54        dir->name_len = 1 | filetype;
55        dir->name[0] = '.';
56        rec_len = dir->rec_len - EXT2_DIR_REC_LEN(1);
57        dir->rec_len = EXT2_DIR_REC_LEN(1);
58
59        /*
60         * Set up entry for '..'
61         */
62        dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
63        dir->rec_len = rec_len;
64        dir->inode = parent_ino;
65        dir->name_len = 2 | filetype;
66        dir->name[0] = '.';
67        dir->name[1] = '.';
68
69    }
70    *block = buf;
71    return 0;
72}
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