Resguardo inicial

linux-7.2.3/tools/testing/selftests/bpf/progs/cgrp_ls_negative.c

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+struct {
+	__uint(type, BPF_MAP_TYPE_CGRP_STORAGE);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__type(key, int);
+	__type(value, long);
+} map_a SEC(".maps");
+
+SEC("tp_btf/sys_enter")
+int BPF_PROG(on_enter, struct pt_regs *regs, long id)
+{
+	struct task_struct *task;
+
+	task = bpf_get_current_task_btf();
+	(void)bpf_cgrp_storage_get(&map_a, (struct cgroup *)task, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}