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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <linux/bpf.h>
#include <linux/version.h>
#include <bpf/bpf_helpers.h>
__u32 sig = 0, pid = 0, status = 0, signal_thread = 0;
static __always_inline int bpf_send_signal_test(void *ctx)
{
int ret;
if (status != 0 || pid == 0)
return 0;
if ((bpf_get_current_pid_tgid() >> 32) == pid) {
if (signal_thread)
ret = bpf_send_signal_thread(sig);
else
ret = bpf_send_signal(sig);
if (ret == 0)
status = 1;
}
return 0;
}
SEC("tracepoint/syscalls/sys_enter_nanosleep")
int send_signal_tp(void *ctx)
{
return bpf_send_signal_test(ctx);
}
SEC("tracepoint/sched/sched_switch")
int send_signal_tp_sched(void *ctx)
{
return bpf_send_signal_test(ctx);
}
SEC("perf_event")
int send_signal_perf(void *ctx)
{
return bpf_send_signal_test(ctx);
}
char __license[] SEC("license") = "GPL";
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