Contributors: 2
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Yonghong Song |
155 |
69.51% |
1 |
33.33% |
| Andrii Nakryiko |
68 |
30.49% |
2 |
66.67% |
| Total |
223 |
|
3 |
|
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <linux/bpf.h>
#include <linux/version.h>
#include "bpf_helpers.h"
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__type(key, __u32);
__type(value, __u64);
} info_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__type(key, __u32);
__type(value, __u64);
} status_map SEC(".maps");
SEC("send_signal_demo")
int bpf_send_signal_test(void *ctx)
{
__u64 *info_val, *status_val;
__u32 key = 0, pid, sig;
int ret;
status_val = bpf_map_lookup_elem(&status_map, &key);
if (!status_val || *status_val != 0)
return 0;
info_val = bpf_map_lookup_elem(&info_map, &key);
if (!info_val || *info_val == 0)
return 0;
sig = *info_val >> 32;
pid = *info_val & 0xffffFFFF;
if ((bpf_get_current_pid_tgid() >> 32) == pid) {
ret = bpf_send_signal(sig);
if (ret == 0)
*status_val = 1;
}
return 0;
}
char __license[] SEC("license") = "GPL";