[PATCH v3 1/2] common/rc: introduce zone check commands

[Johannes Thumshirn <johannes.thumshirn@wdc.com>]

From: Naohiro Aota <naohiro.aota@wdc.com>

Introduce some zone related helper functions: _zone_type(),
_require_zoned_device(), and _require_non_zoned_device(). They all take a
device path as an argument.

_zone_type() return the zone type of the device according to the value
returned from "/sys/block/<disk>/queue/zoned". See
Documentation/ABI/testing/sysfs-block for a detail.

_require_zoned_device() checks if the device is zoned. If not, it skips the
current test. _require_non_zoned_device() does the opposite.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 common/rc | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/common/rc b/common/rc
index 2cf550ec6800..acc750e6586f 100644
--- a/common/rc
+++ b/common/rc
@@ -1931,6 +1931,50 @@ _require_dm_target()
 	fi
 }
 
+_zone_type()
+{
+	local target=$1
+	if [ -z $target ]; then
+		echo "Usage: _zone_type <device>"
+		exit 1
+	fi
+	local sdev=`_short_dev $target`
+
+	if [ -e /sys/block/${sdev}/queue/zoned ]; then
+		cat /sys/block/${sdev}/queue/zoned
+	else
+		echo none
+	fi
+}
+
+_require_zoned_device()
+{
+	local target=$1
+	if [ -z $target ]; then
+		echo "Usage: _require_zoned_device <device>"
+		exit 1
+	fi
+
+	local type=`_zone_type ${target}`
+	if [ "${type}" = "none" ]; then
+		_notrun "this test require zoned block device"
+	fi
+}
+
+_require_non_zoned_device()
+{
+	local target=$1
+	if [ -z $target ]; then
+		echo "Usage: _require_non_zoned_device <device>"
+		exit 1
+	fi
+
+	local type=`_zone_type ${target}`
+	if [ "${type}" != "none" ]; then
+		_notrun "this test require non-zoned block device"
+	fi
+}
+
 # this test requires the ext4 kernel support crc feature on scratch device
 #
 _require_scratch_ext4_crc()
-- 
2.31.1