int fs_rm (fs_t *fs, char *pathname) {
// assert (fs != NULL);
// assert (pathname != NULL);
// parent not exists
int parent = inode_lookup_parent (fs->super_block, pathname);
if (parent < 0)
return -1;
// child not exists
int child = inode_lookup_full (fs->super_block, pathname);
if (child < 0)
return -1;
// child is non-empty dir
if (inode_isdir (fs->super_block, child) && !inode_isdir_isempty (fs->super_block, child))
return -1;
// child is empty-dir or child is reg file
return inode_rm (fs->super_block, pathname);
}
bool
file_is_dir(struct file *file)
{
return inode_isdir(file->inode);
}
int inode_isdir_isempty (super_block_t *sb, int index) {
return sb->inodes[index].size == 0 && inode_isdir (sb, index);
}
