blob: 4478ce6f1fd9184031b338c9fd23218751f54ccd (
plain)
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
|
// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
/*
* One explicit array map and no global variables, so the generated loader
* has exactly one map to create (no .rodata/.bss). prog_tests/signed_loader.c
* uses this to check that a signed loader ignores ctx-supplied max_entries:
* the map must keep its attested size (4), not whatever the host puts in
* the loader ctx.
*/
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 4);
__type(key, __u32);
__type(value, __u64);
} amap SEC(".maps");
SEC("socket")
int probe(void *ctx)
{
__u32 key = 0;
__u64 *val = bpf_map_lookup_elem(&amap, &key);
return val ? (int)*val : 0;
}
char _license[] SEC("license") = "GPL";
|
