Re: [take25 6/6] kevent: Pipe notifications.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tuesday 21 November 2006 17:29, Evgeniy Polyakov wrote:
> Pipe notifications.

> +int kevent_pipe_enqueue(struct kevent *k)
> +{
> +	struct file *pipe;
> +	int err = -EBADF;
> +	struct inode *inode;
> +
> +	pipe = fget(k->event.id.raw[0]);
> +	if (!pipe)
> +		goto err_out_exit;
> +
> +	inode = igrab(pipe->f_dentry->d_inode);
> +	if (!inode)
> +		goto err_out_fput;
> +

Well...

How can you be sure 'pipe/inode' really refers to a pipe/fifo here ?

Hint : i_pipe <> NULL is not sufficient because i_pipe, i_bdev, i_cdev share 
the same location. (check pipe_info() in fs/splice.c)

So I guess you need :

err = -EINVAL;
if  (!S_ISFIFO(inode->i_mode))
	goto err_out_iput;



Eric
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux