On Sat, Sep 07, 2013 at 10:23:42AM +0200, Marco Stornelli wrote:
> +static int pram_rmdir(struct inode *dir, struct dentry *dentry)
> +{
> + struct inode *inode = dentry->d_inode;
> + struct pram_inode *pi;
> + int err = -ENOTEMPTY;
> +
> + if (!inode)
> + return -ENOENT;
> +
> + pi = pram_get_inode(dir->i_sb, inode->i_ino);
> +
> + /* directory to delete is empty? */
> + if (pi->i_type.dir.tail == 0) {
> + inode->i_ctime = dir->i_ctime;
> + inode->i_size = 0;
> + clear_nlink(inode);
> + pram_write_inode(inode, NULL);
> + pram_dec_count(dir);
> + err = 0;
> + } else {
> + pram_dbg("dir not empty\n");
> + }
> +
> + return err;
> +}
... and here you are paying for delayed removal of entries:
mkdir foo
touch foo/bar
rm -rf foo <foo/bar
will fail, since opened-and-unlinked file in effect keeps the directory
where it used to be "not empty" from your rmdir (and rename) POV.
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