lxc/0043-do-not-operate-playload-and-attach-cgroup-if-no-cont.patch

From c080da6dda7a47de8ccb5cc3eabec6e5b2e4c649 Mon Sep 17 00:00:00 2001
From: WangFengTu <wangfengtu@huawei.com>
Date: Mon, 23 May 2022 19:00:28 +0800
Subject: [PATCH] do not operate playload and attach cgroup if no controller

Signed-off-by: WangFengTu <wangfengtu@huawei.com>
---
 src/lxc/cgroups/cgroup.h        |  1 +
 src/lxc/cgroups/isulad_cgfsng.c | 48 ++++++++++++++++++++++++++++++++-
 2 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/src/lxc/cgroups/cgroup.h b/src/lxc/cgroups/cgroup.h
index a9048c4..8b18c1e 100644
--- a/src/lxc/cgroups/cgroup.h
+++ b/src/lxc/cgroups/cgroup.h
@@ -104,6 +104,7 @@ struct cgroup_ops {
 
 #ifdef HAVE_ISULAD
 	int errfd;
+	bool no_controller;
 #endif
 
 	/* @hierarchies
diff --git a/src/lxc/cgroups/isulad_cgfsng.c b/src/lxc/cgroups/isulad_cgfsng.c
index 576b424..8a9656a 100644
--- a/src/lxc/cgroups/isulad_cgfsng.c
+++ b/src/lxc/cgroups/isulad_cgfsng.c
@@ -677,6 +677,13 @@ __cgfsng_ops static bool isulad_cgfsng_payload_destroy(struct cgroup_ops *ops,
 		return false;
 	}
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_payload_destroy");
+		return true;
+	}
+#endif
+
 	if (!ops->hierarchies) {
 		return false;
 	}
@@ -934,6 +941,13 @@ __cgfsng_ops static inline bool isulad_cgfsng_payload_create(struct cgroup_ops *
 	int i;
 	char *container_cgroup = ops->container_cgroup;
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_payload_create");
+		return true;
+	}
+#endif
+
 	if (!container_cgroup) {
 		ERROR("cgfsng_create container_cgroup is invalid");
 		return false;
@@ -964,6 +978,13 @@ __cgfsng_ops static bool isulad_cgfsng_payload_enter(struct cgroup_ops *ops,
 	if (!ops)
 		return ret_set_errno(false, ENOENT);
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_payload_enter");
+		return true;
+	}
+#endif
+
 	if (!ops->hierarchies)
 		return true;
 
@@ -1121,6 +1142,13 @@ __cgfsng_ops void isulad_cgfsng_payload_finalize(struct cgroup_ops *ops)
 	if (!ops)
 		return;
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_payload_finalize");
+		return;
+	}
+#endif
+
 	if (!ops->hierarchies)
 		return;
 
@@ -2010,6 +2038,13 @@ __cgfsng_ops static bool isulad_cgfsng_attach(struct cgroup_ops *ops,
 	if (!ops)
 		return ret_set_errno(false, ENOENT);
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_attach");
+		return true;
+	}
+#endif
+
 	if (!ops->hierarchies)
 		return true;
 
@@ -2781,6 +2816,13 @@ __cgfsng_ops bool isulad_cgfsng_payload_delegate_controllers(struct cgroup_ops *
 	if (!ops)
 		return ret_set_errno(false, ENOENT);
 
+#ifdef HAVE_ISULAD
+	if (ops->no_controller) {
+		DEBUG("no controller found, isgnore isulad_cgfsng_payload_delegate_controllers");
+		return true;
+	}
+#endif
+
 	return __cgfsng_delegate_controllers(ops, ops->container_cgroup);
 }
 
@@ -3041,8 +3083,12 @@ static int cg_unified_init(struct cgroup_ops *ops, bool relative,
 	delegatable = cg_unified_get_controllers(subtree_path);
 	if (!delegatable)
 		delegatable = cg_unified_make_empty_controller();
-	if (!delegatable[0])
+	if (!delegatable[0]) {
 		TRACE("No controllers are enabled for delegation");
+#ifdef HAVE_ISULAD
+		ops->no_controller = true;
+#endif
+	}
 
 	/* TODO: If the user requested specific controllers via lxc.cgroup.use
 	 * we should verify here. The reason I'm not doing it right is that I'm
-- 
2.25.1