[LTP] [PATCH v2 03/16] API/cgroup: Add cgroup_find_root helper function

[Luke Nowakowski-Krijger]

Add a helper function similar to cgroup_find_ctrl to make matching paths
to roots more convenient.

Signed-off-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger@canonical.com>
---
v2: Use the for_each_root() macro to properly loop over v1 roots

 lib/tst_cgroup.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/tst_cgroup.c b/lib/tst_cgroup.c
index 8b8619b36..7a406c9db 100644
--- a/lib/tst_cgroup.c
+++ b/lib/tst_cgroup.c
@@ -363,6 +363,18 @@ static struct cgroup_ctrl *cgroup_find_ctrl(const char *const ctrl_name)
 	return ctrl;
 }
 
+static struct cgroup_root *cgroup_find_root(const char *const mnt_path)
+{
+	struct cgroup_root *root;
+
+	for_each_root(root) {
+		if (!strcmp(root->mnt_path, mnt_path))
+				return root;
+	}
+
+	return NULL;
+}
+
 /* Determine if a mounted cgroup hierarchy is unique and record it if so.
  *
  * For CGroups V2 this is very simple as there is only one
-- 
2.32.0