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([2a02:8010:64ea:0:fad1:11ff:fead:57db]) by smtp.googlemail.com with ESMTPSA id s12sm3185424wmj.26.2020.08.29.05.53.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 29 Aug 2020 05:53:35 -0700 (PDT) Subject: Re: [PATCH v2 05/10] fs/ntfs3: Add attrib operations To: Konstantin Komarov , "viro@zeniv.linux.org.uk" , "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" Cc: =?UTF-8?Q?Pali_Roh=c3=a1r?= References: From: Mark Harmstone Autocrypt: addr=mark@harmstone.com; keydata= mQENBFp/GMsBCACtFsuHZqHWpHtHuFkNZhMpiZMChyou4X8Ueur3XyF8KM2j6TKkZ5M/72qT EycEM0iU1TYVN/Rb39gBGtRclLFVY1bx4i+aUCzh/4naRxqHgzM2SeeLWHD0qva0gIwjvoRs FP333bWrFKPh5xUmmSXBtBCVqrW+LYX4404tDKUf5wUQ9bQd2ItFRM2mU/l6TUHVY2iMql6I s94Bz5/Zh4BVvs64CbgdyYyQuI4r2tk/Z9Z8M4IjEzQsjSOfArEmb4nj27R3GOauZTO2aKlM 8821rvBjcsMk6iE/NV4SPsfCZ1jvL2UC3CnWYshsGGnfd8m2v0aLFSHZlNd+vedQOTgnABEB AAG0I01hcmsgSGFybXN0b25lIDxtYXJrQGhhcm1zdG9uZS5jb20+iQFOBBMBCAA4FiEEG2Jg KYgV0WRwIJAqbKyhHeAWK+0FAlp/GMsCGy8FCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQ bKyhHeAWK+3vPwf8DcCgo/1CJYyUeldSg8M4hM5Yg5J56T7hV5lWNKSdPYe6NrholYqfaSip UVJDmi8VKkWGqxp+mUT6V4Fz1pEXaWVuFFfYbImlWt9qkPGVrn4b3XWZZPBDe2Z2cU0R4/p0 se60TN8XW7m7HVulD5VFDqrq0bDGqoFpr5RHmaMcoD3NZMqRLG6wHkESrk3P6mvc0qBeDzDU 3Z/blOnqSFSMLg/+wkY4rScvfGP8AdUQ91IV7vIgwlExiTAIjH3Eg78rP2GRM+vaaKNREpTS LM+8ivNgo5S8sQcrNYlg5rA2hJJsT45MO0TuGoN4u4eJf7nC0QaRTEJTsLGnPr7MlxzjirkB DQRafxjLAQgAvkcSlqYuzsqLwPzuzoMzIiAwfvEW3AnZxmZn9bQ+ashB9WnkAy2FZCiI/BPw iiUjqgloaVS2dIrVFAYbynqSbjqhki+uwMliz7/jEporTDmxx7VGzdbcKSCe6rkE/72o6t7K G0r55cmWnkdOWQ965aRnRAFY7Zzd+WLqlzeoseYsNj36RMaqNR7aL7x+kDWnwbw+jgiXtgNB cnKtqmJc04z/sQTa+sUX53syht1Iv4wkATN1W+ZvQySxHNXK1r4NkcDA9ZyFA3NeeIE6ejiO 7RyC0llKXk78t0VQPdGS6HspVhYGJJt21c5vwSzIeZaneKULaxXGwzgYFTroHD9n+QARAQAB iQJsBBgBCAAgFiEEG2JgKYgV0WRwIJAqbKyhHeAWK+0FAlp/GMsCGy4BQAkQbKyhHeAWK+3A dCAEGQEIAB0WIQR6bEAu0hwk2Q9ibSlt5UHXRQtUiwUCWn8YywAKCRBt5UHXRQtUiwdEB/9O pyjmrshY40kwpmPwUfode2Azufd3QRdthnNPAY8Tv9erwsMS3sMh+M9EP+iYJh+AIRO7fDN/ u0AWIqZhHFzCndqZp8JRYULnspXSKPmVSVRIagylKew406XcAVFpEjloUtDhziBN7ykksrAM oLASaBHZpAfp8UAGDrr8Fx1on46rDxsWbh1K1h4LEmkkVooDELjsbN9jvxr8ym8Bkt54Fcpy pTOd8jkt/lJRvnKXoL3rZ83HFiUFtp/ZkveZKi53ANUaqy5/U5v0Q0Ppz9ujcRA9I/V3B66D KMg1UjiigJG6espeIPjXjw0n9BCa9jqGICyJTIZhnbEs1yEpsM87eUIH/0UFLv0b8IZepL/3 QfiFoYSqMEAwCVDFkCt4uUVFZczKTDXTFkwm7zflvRHdy5QyVFDWMyGnTN+Bq48Gwn1MuRT/ Sg37LIjAUmKRJPDkVr/DQDbyL6rTvNbA3hTBu392v0CXFsvpgRNYaT8oz7DDBUUWj2Ny6bZC Btwr/O+CwVVqWRzKDQgVo4t1xk2ts1F0R1uHHLsX7mIgfXBYdo/y4UgFBAJH5NYUcBR+QQcO gUUZeF2MC9i0oUaHJOIuuN2q+m9eMpnJdxVKAUQcZxDDvNjZwZh+ejsgG4Ejd2XR/T0yXFoR /dLFIhf2zxRylN1xq27M9P2t1xfQFocuYToPsVk= Message-ID: <3c1e5918-347a-d1e6-44ce-338c7d0dc7e4@harmstone.com> Date: Sat, 29 Aug 2020 13:53:34 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28/8/20 5:52 pm, Konstantin Komarov wrote: > Hi Mark! Thanks for the feedback. It's reasonable concern, but the open > question is how to access those NTFS attributes which extend the DOS > attributes. user.DOSATTRIB may be good for FAT32 as DOS attributes are stored in 8bit. > However, this does not apply to NTFS (32bit attributes). I'm not sure why this would be an issue - the obvious way of reading user.DOSATTRIB is to use sscanf into an int, and then check for the bits you're interested in. The NT FILE_ATTRIBUTE_* values replicate and extend the FAT constants used by DOS, so it shouldn't cause any confusion only exposing the full 32-bit value.