| // SPDX-License-Identifier: GPL-2.0 | |
| /* | |
| * Copyright (C) 2025 Microsoft Corporation | |
| * | |
| * Author: Blaise Boscaccy <bboscaccy@linux.microsoft.com> | |
| */ | |
| #include "vmlinux.h" | |
| #include <errno.h> | |
| #include <bpf/bpf_helpers.h> | |
| #include <bpf/bpf_tracing.h> | |
| char _license[] SEC("license") = "GPL"; | |
| __u32 monitored_tid; | |
| SEC("lsm.s/bpf") | |
| int BPF_PROG(bpf, int cmd, union bpf_attr *attr, unsigned int size, bool kernel) | |
| { | |
| __u32 tid; | |
| tid = bpf_get_current_pid_tgid() & 0xFFFFFFFF; | |
| if (!kernel || tid != monitored_tid) | |
| return 0; | |
| else | |
| return -EINVAL; | |
| } |