block/block-backend: add block layer APIs resembling Linux ZonedBlockDevice ioctls

Add zoned device option to host_device BlockDriver. It will be presented only
for zoned host block devices. By adding zone management operations to the
host_block_device BlockDriver, users can use the new block layer APIs
including Report Zone and four zone management operations
(open, close, finish, reset, reset_all).

Qemu-io uses the new APIs to perform zoned storage commands of the device:
zone_report(zrp), zone_open(zo), zone_close(zc), zone_reset(zrs),
zone_finish(zf).

For example, to test zone_report, use following command:
$ ./build/qemu-io --image-opts -n driver=host_device, filename=/dev/nullb0
-c "zrp offset nr_zones"

Signed-off-by: Sam Li <faithilikerun@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20230508045533.175575-4-faithilikerun@gmail.com
Message-id: 20230324090605.28361-4-faithilikerun@gmail.com
[Adjust commit message prefix as suggested by Philippe Mathieu-Daudé
<philmd@linaro.org> and remove spurious ret = -errno in
raw_co_zone_mgmt().
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

include/block/raw-aio.h

@@ -28,6 +28,8 @@
 #define QEMU_AIO_WRITE_ZEROES 0x0020
 #define QEMU_AIO_COPY_RANGE   0x0040
 #define QEMU_AIO_TRUNCATE     0x0080
+#define QEMU_AIO_ZONE_REPORT  0x0100
+#define QEMU_AIO_ZONE_MGMT    0x0200
 #define QEMU_AIO_TYPE_MASK \
         (QEMU_AIO_READ | \
          QEMU_AIO_WRITE | \
@@ -36,7 +38,9 @@
          QEMU_AIO_DISCARD | \
          QEMU_AIO_WRITE_ZEROES | \
          QEMU_AIO_COPY_RANGE | \
-         QEMU_AIO_TRUNCATE)
+         QEMU_AIO_TRUNCATE | \
+         QEMU_AIO_ZONE_REPORT | \
+         QEMU_AIO_ZONE_MGMT)
 
 /* AIO flags */
 #define QEMU_AIO_MISALIGNED   0x1000