linux-ext4 - [ext4 crypto] feature request "lockable directories"

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Date:	Mon, 27 Apr 2015 23:57:58 +0200
From:	"U.Mutlu" <for-gmane@...luit.com>
To:	linux-ext4@...r.kernel.org
Cc:	Theodore Ts'o <tytso@....edu>
Subject: [ext4 crypto] feature request "lockable directories"

Hi,
I think an option to lock (and unlock; like locking a door)
would be a useful feature with encrypted directories.

By this the user could "lock" a sensitive directory
and "unlock" it only when needed.

This could be integrated in an ext4 user tool, or in a new tool, for example
   lockdir -l mydir   # locking
   lockdir -u mydir   # unlocking

A locked directory cannot be accessed.
Both locking and unlocking shall ask for a password for just that directory.
The password could be saved in an internal file within the directory,
and auto-deleted after successful unlocking.

Thx
Uenal

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