Re: [PATCH v3] vfs: new O_NODE open flag

[Miklos Szeredi]

On Mon, 07 Dec 2009, Miklos Szeredi wrote:
>   ln /dev/foo /dev/shm/my_secret_device_link
>   (foo is removed)
>   open("/dev/shm/my_secret_device_link", O_RDWR)
> 
> How is this different than keeping the device open with O_NODE?

In other words, revoking file handles is not enough, we really need to
revoke the _inode_.  And if we do that then O_NODE handles are
perfectly harmless.

Miklos
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