51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* get_num_dirs.c -- calculate number of directories
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*
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* Copyright 1997 by Theodore Ts'o
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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* %End-Header%
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*/
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#include "config.h"
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#include <stdio.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <string.h>
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#include <time.h>
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#include "ext2_fs.h"
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#include "ext2fsP.h"
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/*
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* Returns the number of directories in the filesystem as reported by
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* the group descriptors. Of course, the group descriptors could be
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* wrong!
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*/
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errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs)
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{
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dgrp_t i;
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ext2_ino_t num_dirs, max_dirs;
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EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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num_dirs = 0;
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max_dirs = fs->super->s_inodes_per_group;
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for (i = 0; i < fs->group_desc_count; i++) {
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if (ext2fs_bg_used_dirs_count(fs, i) > max_dirs)
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num_dirs += max_dirs / 8;
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else
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num_dirs += ext2fs_bg_used_dirs_count(fs, i);
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}
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if (num_dirs > fs->super->s_inodes_count)
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num_dirs = fs->super->s_inodes_count;
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*ret_num_dirs = num_dirs;
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return 0;
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}
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