From: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Date: Tue, 25 Apr 2023 12:27:02 +0000 (+0000)
Subject: samples/c: add sample program for cgroup_setup_mode()
X-Git-Tag: v3.1.0~90
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=56fa2f65f1e8e827aaef96712e4274ed7a9ee46d;p=thirdparty%2Flibcgroup.git

samples/c: add sample program for cgroup_setup_mode()

Add a sample program to demonstrate the usage of the cgroup_setup_mode()
to the developers.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
---

diff --git a/samples/c/Makefile.am b/samples/c/Makefile.am
index 7a73bcb4..28d4ddd6 100644
--- a/samples/c/Makefile.am
+++ b/samples/c/Makefile.am
@@ -6,7 +6,8 @@ if WITH_SAMPLES
 noinst_PROGRAMS = setuid walk_test read_stats walk_task get_controller	\
 		  get_mount_point proctest get_all_controller		\
 		  get_variable_names test_named_hierarchy		\
-		  get_procs wrapper_test logger empty_cgroup_v2
+		  get_procs wrapper_test logger empty_cgroup_v2		\
+		  get_setup_mode
 
 setuid_SOURCES=setuid.c
 walk_test_SOURCES=walk_test.c
@@ -22,5 +23,6 @@ get_procs_SOURCES=get_procs.c
 wrapper_test_SOURCES=wrapper_test.c
 logger_SOURCES=logger.c
 empty_cgroup_v2_SOURCES=empty_cgroup_v2.c
+get_setup_mode=get_setup_mode.c
 
 endif
diff --git a/samples/c/get_setup_mode.c b/samples/c/get_setup_mode.c
new file mode 100644
index 00000000..e983f4fe
--- /dev/null
+++ b/samples/c/get_setup_mode.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: LGPL-2.1-only
+/*
+ * Copyright (c) 2023 Oracle and/or its affiliates
+ *
+ * Author: Kamalesh Babulal <kamalesh.babulal@oracle.com>
+ *
+ * Description: This file contains the sample code to demonstrate usage of
+ * 		cgroup_setup_mode() API.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <libcgroup.h>
+
+int main(void)
+{
+	enum cg_setup_mode_t setup_mode;
+	int ret;
+
+	ret = cgroup_init();
+	if (ret) {
+		printf("cgroup_init failed with %s\n", cgroup_strerror(ret));
+		exit(1);
+	}
+
+	setup_mode = cgroup_setup_mode();
+	switch(setup_mode) {
+	case CGROUP_MODE_LEGACY:
+		printf("cgroup mode: Legacy\n");
+		break;
+	case CGROUP_MODE_HYBRID:
+		printf("cgroup mode: Hybrid\n");
+		break;
+	case CGROUP_MODE_UNIFIED:
+		printf("cgroup mode: Unified\n");
+		break;
+	default:
+		printf("cgroup mode: Unknown\n");
+		break;
+	}
+
+	return 0;
+}