On 09/08/2021 11:50, Niklas Cassel wrote:

From: Niklas Cassel <redacted>

A user space process should not need the CAP_SYS_ADMIN capability set
in order to perform a BLKREPORTZONE ioctl.

Getting the zone report is required in order to get the write pointer.
Neither read() nor write() requires CAP_SYS_ADMIN, so it is reasonable
that a user space process that can read/write from/to the device, also
can get the write pointer. (Since e.g. writes have to be at the write
pointer.)

Fixes: 3ed05a987e0f ("blk-zoned: implement ioctls")
Signed-off-by: Niklas Cassel <redacted>
Reviewed-by: Damien Le Moal <redacted>

Nit: Missing 'w'

Reviewed-by: Aravind Ramesh <redacted>
Reviewed-by: Adam Manzanares <redacted>
Reviewed-by: Himanshu Madhani <redacted>
Cc: stable@vger.kernel.org # v4.10+
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Looks good,
Reviewed-by: Johannes Thumshirn <redacted>