mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-02 09:35:06 +01:00
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
|
/*
|
||
|
|
* newdir.c --- create a new directory block
|
||
|
|
*
|
||
|
|
* Copyright (C) 1994, 1995 Theodore Ts'o.
|
||
|
|
*
|
||
|
|
* %Begin-Header%
|
||
|
|
* This file may be redistributed under the terms of the GNU Library
|
||
|
|
* General Public License, version 2.
|
||
|
|
* %End-Header%
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#if HAVE_UNISTD_H
|
||
|
|
#include <unistd.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "ext2_fs.h"
|
||
|
|
#include "ext2fs.h"
|
||
|
|
|
||
|
|
#ifndef EXT2_FT_DIR
|
||
|
|
#define EXT2_FT_DIR 2
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Create new directory block
|
||
|
|
*/
|
||
|
|
errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
|
||
|
|
ext2_ino_t parent_ino, char **block)
|
||
|
|
{
|
||
|
|
struct ext2_dir_entry *dir = NULL;
|
||
|
|
errcode_t retval;
|
||
|
|
char *buf;
|
||
|
|
int rec_len;
|
||
|
|
int filetype = 0;
|
||
|
|
|
||
|
|
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
|
||
|
|
|
||
|
|
retval = ext2fs_get_mem(fs->blocksize, &buf);
|
||
|
|
if (retval)
|
||
|
|
return retval;
|
||
|
|
memset(buf, 0, fs->blocksize);
|
||
|
|
dir = (struct ext2_dir_entry *) buf;
|
||
|
|
|
||
|
|
retval = ext2fs_set_rec_len(fs, fs->blocksize, dir);
|
||
|
|
if (retval)
|
||
|
|
return retval;
|
||
|
|
|
||
|
|
if (dir_ino) {
|
||
|
|
if (fs->super->s_feature_incompat &
|
||
|
|
EXT2_FEATURE_INCOMPAT_FILETYPE)
|
||
|
|
filetype = EXT2_FT_DIR << 8;
|
||
|
|
/*
|
||
|
|
* Set up entry for '.'
|
||
|
|
*/
|
||
|
|
dir->inode = dir_ino;
|
||
|
|
dir->name_len = 1 | filetype;
|
||
|
|
dir->name[0] = '.';
|
||
|
|
rec_len = fs->blocksize - EXT2_DIR_REC_LEN(1);
|
||
|
|
dir->rec_len = EXT2_DIR_REC_LEN(1);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set up entry for '..'
|
||
|
|
*/
|
||
|
|
dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
|
||
|
|
retval = ext2fs_set_rec_len(fs, rec_len, dir);
|
||
|
|
if (retval)
|
||
|
|
return retval;
|
||
|
|
dir->inode = parent_ino;
|
||
|
|
dir->name_len = 2 | filetype;
|
||
|
|
dir->name[0] = '.';
|
||
|
|
dir->name[1] = '.';
|
||
|
|
|
||
|
|
}
|
||
|
|
*block = buf;
|
||
|
|
return 0;
|
||
|
|
}
|