diff mbox series

[v2,03/18] API/cgroup: Add cgroup_find_root helper function

Message ID 3280b1912e28489c64abe5c16f3e4cf6866ff8e9.1658433280.git.luke.nowakowskikrijger@canonical.com
State Accepted
Headers show
Series Expand Cgroup lib and modify controller tests | expand

Commit Message

Luke Nowakowski-Krijger July 21, 2022, 8:52 p.m. UTC 
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 | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/lib/tst_cgroup.c b/lib/tst_cgroup.c
index d757c832f..677a6f318 100644
--- a/lib/tst_cgroup.c
+++ b/lib/tst_cgroup.c
@@ -362,6 +362,19 @@  static struct cgroup_ctrl *cgroup_find_ctrl(const char *const ctrl_name)
 	return NULL;
 }
 
+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