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Date: Wed, 14 Jun 2017 00:06:14 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Eric Biggers <ebiggers3@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>,
        linux-fscrypt@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
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Subject: Re: [PATCH 1/3] ext4: require key for truncate(2) of encrypted file
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On Wed, Jun 14, 2017 at 12:03:57AM -0700, Eric Biggers wrote:
> None of those are allowed because fallocate() requires a file descriptor, and
> open() fails with ENOKEY if the encryption key is not available.  truncate() is
> different because it takes a path, not a file descriptor.

Ok, that makes sense.