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Date:   Mon, 2 Aug 2021 11:05:17 -0400
From:   "Theodore Ts'o" <tytso@mit.edu>
To:     Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc:     "Darrick J. Wong" <djwong@kernel.org>,
        linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
        linux-kernel@vger.kernel.org, pali@kernel.org, dsterba@suse.cz,
        aaptel@suse.com, willy@infradead.org, rdunlap@infradead.org,
        joe@perches.com, mark@harmstone.com, nborisov@suse.com,
        linux-ntfs-dev@lists.sourceforge.net, anton@tuxera.com,
        dan.carpenter@oracle.com, hch@lst.de, ebiggers@kernel.org,
        andy.lavr@gmail.com, kari.argillander@gmail.com,
        oleksandr@natalenko.name
Subject: Re: [PATCH v27 00/10] NTFS read-write driver GPL implementation by
 Paragon Software
Message-ID: <YQgJrYPphDC4W4Q3@mit.edu>
References: <20210729134943.778917-1-almaz.alexandrovich@paragon-software.com>
 <20210729162459.GA3601405@magnolia>
 <YQdlJM6ngxPoeq4U@mit.edu>
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It should also noted that apparently ntfs3 does not properly support
user namespaces, such that generic/317 fails:

generic/317		[10:37:19][    7.024574] run fstests generic/317 at 2021-08-02 10:37:19
 [10:37:19]- output mismatch (see /results/ntfs3/results-default/generic/317.out.bad)
    --- tests/generic/317.out	2021-08-01 20:47:35.000000000 -0400
    +++ /results/ntfs3/results-default/generic/317.out.bad	2021-08-02 10:37:19.930687003 -0400
    @@ -13,8 +13,8 @@
     From init_user_ns
       File: "$SCRATCH_MNT/file1"
       Size: 0            Filetype: Regular File
    -  Mode: (0644/-rw-r--r--)         Uid: (qa_user)  Gid: (qa_user)
    +  Mode: (0755/-rwxr-xr-x)         Uid: (0)  Gid: (0)
     From user_ns
       File: "$SCRATCH_MNT/file1"
    ...
    (Run 'diff -u /root/xfstests/tests/generic/317.out /results/ntfs3/results-default/generic/317.out.bad'  to see the entire diff)
Ran: generic/317
Failures: generic/317


Is Paragon Software willing to commit to fixing these and other bugs?
Better yet, it would be nice if Paragon Software could improve its
testing and other QA processes.

Furthermore, container developers should note that ntfs3 is not
currently safe for use with containers.

   	   	    	       	      - Ted