On 09/08/2021 11:50, Niklas Cassel wrote:
From: Niklas Cassel niklas.cassel@wdc.com
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 niklas.cassel@wdc.com Reviewed-by: Damien Le Moal damien.lemoal@dc.com
Nit: Missing 'w'
Reviewed-by: Aravind Ramesh aravind.ramesh@wdc.com Reviewed-by: Adam Manzanares a.manzanares@samsung.com Reviewed-by: Himanshu Madhani himanshu.madhani@oracle.com Cc: stable@vger.kernel.org # v4.10+
Looks good, Reviewed-by: Johannes Thumshirn johannes.thumshirn@wdc.com