2 * get_num_dirs.c -- calculate number of directories
4 * Copyright 1997 by Theodore Ts'o
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
24 * Returns the number of directories in the filesystem as reported by
25 * the group descriptors. Of course, the group descriptors could be
28 errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs)
31 ext2_ino_t num_dirs, max_dirs;
33 EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
36 max_dirs = fs->super->s_inodes_per_group;
37 for (i = 0; i < fs->group_desc_count; i++) {
38 if (ext2fs_bg_used_dirs_count(fs, i) > max_dirs)
39 num_dirs += max_dirs / 8;
41 num_dirs += ext2fs_bg_used_dirs_count(fs, i);
43 if (num_dirs > fs->super->s_inodes_count)
44 num_dirs = fs->super->s_inodes_count;
46 *ret_num_dirs = num_dirs;