linux-ext4 - Re: [PATCH 4/8] ext4 crypto: encrypt tmpfile located in encryption protected directory

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Message-ID: <CAHAf8Wnornki0J0e27Hesd6vnk9C0vJhqpH-qAL+vSYg+MNErg@mail.gmail.com>
Date:	Sat, 30 May 2015 07:45:03 -0300
From:	Albino Biasutti Neto <bino@...eup.net>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	jaegeuk@...nel.org, Michael Halcrow <mhalcrow@...gle.com>
Subject: Re: [PATCH 4/8] ext4 crypto: encrypt tmpfile located in encryption
 protected directory

2015-05-29 13:33 GMT-03:00 Theodore Ts'o <tytso@....edu>:
> I think what you are asking is why is this function always returning
> NULL?

Yes. Or empty, only function.

> That's because it's in the #else clause of an #ifdef
> CONFIG_EXT4_FS_ENCRYPTION.  In the case where
> CONFIG_EXT4_FS_ENCRYPTION is defined, it returns:
>
> static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode)
> {
>         return EXT4_I(inode)->i_crypt_info;
> }
>
> The idea is to minimize the need for #ifdef's in the .c files.

Understand, thanks.


Albino
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