1 /* Copyright (c) 2016 Facebook
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of version 2 of the GNU General Public
5 * License as published by the Free Software Foundation.
7 #include <linux/version.h>
8 #include <linux/ptrace.h>
9 #include <uapi/linux/bpf.h>
10 #include <bpf/bpf_helpers.h>
11 #include <bpf/bpf_tracing.h>
16 bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
20 SEC("kprobe/__set_task_comm")
21 int prog(struct pt_regs *ctx)
23 struct signal_struct *signal;
24 struct task_struct *tsk;
25 char oldcomm[16] = {};
26 char newcomm[16] = {};
30 tsk = (void *)PT_REGS_PARM1(ctx);
33 bpf_probe_read_kernel(oldcomm, sizeof(oldcomm), &tsk->comm);
34 bpf_probe_read_kernel(newcomm, sizeof(newcomm),
35 (void *)PT_REGS_PARM2(ctx));
36 signal = _(tsk->signal);
37 oom_score_adj = _(signal->oom_score_adj);
41 SEC("kprobe/urandom_read")
42 int prog2(struct pt_regs *ctx)
47 char _license[] SEC("license") = "GPL";
48 u32 _version SEC("version") = LINUX_VERSION_CODE;