1*62d2d0a3SSong Liu // SPDX-License-Identifier: GPL-2.0 2*62d2d0a3SSong Liu /* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */ 3*62d2d0a3SSong Liu 4*62d2d0a3SSong Liu #include <linux/bpf.h> 5*62d2d0a3SSong Liu #include <bpf/bpf_helpers.h> 6*62d2d0a3SSong Liu #include <bpf/bpf_tracing.h> 7*62d2d0a3SSong Liu 8*62d2d0a3SSong Liu int fentry_hit; 9*62d2d0a3SSong Liu int fexit_hit; 10*62d2d0a3SSong Liu int my_pid; 11*62d2d0a3SSong Liu 12*62d2d0a3SSong Liu SEC("fentry/cmdline_proc_show") BPF_PROG(fentry_cmdline)13*62d2d0a3SSong Liuint BPF_PROG(fentry_cmdline) 14*62d2d0a3SSong Liu { 15*62d2d0a3SSong Liu if (my_pid != (bpf_get_current_pid_tgid() >> 32)) 16*62d2d0a3SSong Liu return 0; 17*62d2d0a3SSong Liu 18*62d2d0a3SSong Liu fentry_hit = 1; 19*62d2d0a3SSong Liu return 0; 20*62d2d0a3SSong Liu } 21*62d2d0a3SSong Liu 22*62d2d0a3SSong Liu SEC("fexit/cmdline_proc_show") BPF_PROG(fexit_cmdline)23*62d2d0a3SSong Liuint BPF_PROG(fexit_cmdline) 24*62d2d0a3SSong Liu { 25*62d2d0a3SSong Liu if (my_pid != (bpf_get_current_pid_tgid() >> 32)) 26*62d2d0a3SSong Liu return 0; 27*62d2d0a3SSong Liu 28*62d2d0a3SSong Liu fexit_hit = 1; 29*62d2d0a3SSong Liu return 0; 30*62d2d0a3SSong Liu } 31