From: Niklas Cassel <niklas.cassel@xxxxxxx> Performing a BLKREPORTZONE operation should be allowed under the same permissions as read(). (read() does not require CAP_SYS_ADMIN). Remove the CAP_SYS_ADMIN requirement, and instead check that the fd was successfully opened with FMODE_READ. This way BLKREPORTZONE will match the access control requirement of read(). Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxx> --- block/blk-zoned.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 0789e6e9f7db..e05fe8dbb06d 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -288,8 +288,8 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode, if (!blk_queue_is_zoned(q)) return -ENOTTY; - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; + if (!(mode & FMODE_READ)) + return -EBADF; if (copy_from_user(&rep, argp, sizeof(struct blk_zone_report))) return -EFAULT; -- 2.31.1
