diff mbox series

[v4,2/5] common/btrfs: add helper _has_btrfs_sysfs_feature_attr

Message ID e524e2e3f45fe34836110dba588af7dc1cc66d22.1698712764.git.anand.jain@oracle.com (mailing list archive)
State New, archived
Headers show
Series btrfs/219 cloned-device mount capability update | expand

Commit Message

Anand Jain Nov. 2, 2023, 11:28 a.m. UTC 
With this helper, btrfs test cases can now check if a particular feature
is implemented in the kernel.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
---
 common/btrfs | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/common/btrfs b/common/btrfs
index c3bffd2ae3f7..fbc26181f7bc 100644
--- a/common/btrfs
+++ b/common/btrfs
@@ -753,3 +753,15 @@  _require_scratch_enable_simple_quota()
 					_notrun "simple quotas not available"
 	_scratch_unmount
 }
+
+_has_btrfs_sysfs_feature_attr()
+{
+	local feature_attr=$1
+
+	[ -z $feature_attr ] && \
+		_fail "Missing feature name argument for _has_btrfs_sysfs_attr"
+
+	modprobe btrfs &> /dev/null
+
+	test -e /sys/fs/btrfs/features/$feature_attr
+}