blob: 86c3bb954abc9b6a273cb0a88bb1a67671efeb59 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include "uptr_test_common.h"
struct {
__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
__uint(map_flags, BPF_F_NO_PREALLOC);
__type(key, int);
__type(value, struct value_lock_type);
} datamap SEC(".maps");
/* load test only. not used */
SEC("syscall")
int not_used(void *ctx)
{
struct value_lock_type *ptr;
struct task_struct *task;
struct user_data *udata;
task = bpf_get_current_task_btf();
ptr = bpf_task_storage_get(&datamap, task, 0, 0);
if (!ptr)
return 0;
bpf_spin_lock(&ptr->lock);
udata = ptr->udata;
if (!udata) {
bpf_spin_unlock(&ptr->lock);
return 0;
}
udata->result = MAGIC_VALUE + udata->a + udata->b;
bpf_spin_unlock(&ptr->lock);
return 0;
}
char _license[] SEC("license") = "GPL";
|
