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

Last change on this file since 821 was 821, checked in by Bruno Cornec, 18 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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