linux-ext4 - [Bug 214665] security bug:using "truncate" bypass disk quotas limit

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Message-ID: <bug-214665-13602-ba1ppNLsCv@https.bugzilla.kernel.org/>
Date:   Mon, 11 Oct 2021 14:43:25 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 214665] security bug:using "truncate" bypass disk quotas limit

https://bugzilla.kernel.org/show_bug.cgi?id=214665

Theodore Tso (tytso@....edu) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Theodore Tso (tytso@....edu) ---
As Lukas said, "truncate" is not the only way to create sparse files.  And
there are many Unix / Linux programs that depend on the ability to create
sparse files, since Unix support of sparse files goes back at roughly 50 years
(half a century).

The fact that clueless users / sysadmins might not understand basic Unix/Linux
behavior is not a bug in Linux.   There are plenty of other ways that an
experienced sysadmin might shoot themselves in the foot....

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