1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 #include <stdbool.h> 4 #include <stddef.h> 5 #include <linux/bpf.h> 6 #include <linux/ptrace.h> 7 #include <bpf/bpf_helpers.h> 8 #include <bpf/bpf_tracing.h> 9 10 struct task_struct; 11 12 SEC("kprobe/__set_task_comm") 13 int BPF_KPROBE(prog1, struct task_struct *tsk, const char *buf, bool exec) 14 { 15 return !tsk; 16 } 17 18 SEC("kretprobe/__set_task_comm") 19 int BPF_KRETPROBE(prog2, int ret) 20 { 21 return ret; 22 } 23 24 SEC("raw_tp/task_rename") 25 int prog3(struct bpf_raw_tracepoint_args *ctx) 26 { 27 return !ctx->args[0]; 28 } 29 30 SEC("fentry/__set_task_comm") 31 int BPF_PROG(prog4, struct task_struct *tsk, const char *buf, bool exec) 32 { 33 return 0; 34 } 35 36 SEC("fexit/__set_task_comm") 37 int BPF_PROG(prog5, struct task_struct *tsk, const char *buf, bool exec) 38 { 39 return 0; 40 } 41 42 char _license[] SEC("license") = "GPL"; 43