/* Copyright (c) 2016 Facebook
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#include <linux/version.h>
#include <linux/ptrace.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"

#define _(P) ({typeof(P) val = 0; bpf_probe_read(&val, sizeof(val), &P); val;})

SEC("kprobe/__set_task_comm")
int prog(struct pt_regs *ctx)
{
	struct signal_struct *signal;
	struct task_struct *tsk;
	char oldcomm[16] = {};
	char newcomm[16] = {};
	u16 oom_score_adj;
	u32 pid;

	tsk = (void *)PT_REGS_PARM1(ctx);

	pid = _(tsk->pid);
	bpf_probe_read(oldcomm, sizeof(oldcomm), &tsk->comm);
	bpf_probe_read(newcomm, sizeof(newcomm), (void *)PT_REGS_PARM2(ctx));
	signal = _(tsk->signal);
	oom_score_adj = _(signal->oom_score_adj);
	return 0;
}

SEC("kprobe/urandom_read")
int prog2(struct pt_regs *ctx)
{
	return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
d='selected'>master</option>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=1bae6c99decf9137069646b593d3439171a8a8e2'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=1bae6c99decf9137069646b593d3439171a8a8e2'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/dccp?id=1bae6c99decf9137069646b593d3439171a8a8e2'>dccp</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/dccp/minisocks.c?id=1bae6c99decf9137069646b593d3439171a8a8e2'>minisocks.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/dccp/minisocks.c?id=1bae6c99decf9137069646b593d3439171a8a8e2&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>