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/*
* get_num_dirs.c -- calculate number of directories
*
* Copyright 1997 by 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 "config.h"
#include <stdio.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <time.h>
#include "ext2_fs.h"
#include "ext2fsP.h"
/*
* Returns the number of directories in the filesystem as reported by
* the group descriptors. Of course, the group descriptors could be
* wrong!
*/
errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs)
{
dgrp_t i;
ext2_ino_t num_dirs, max_dirs;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
num_dirs = 0;
max_dirs = fs->super->s_inodes_per_group;
for (i = 0; i < fs->group_desc_count; i++) {
if (ext2fs_bg_used_dirs_count(fs, i) > max_dirs)
num_dirs += max_dirs / 8;
else
num_dirs += ext2fs_bg_used_dirs_count(fs, i);
}
if (num_dirs > fs->super->s_inodes_count)
num_dirs = fs->super->s_inodes_count;
*ret_num_dirs = num_dirs;
return 0;
}
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