1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3
4#include <linux/bpf.h>
5#include <stdint.h>
6#include <stdbool.h>
7#include <bpf/bpf_helpers.h>
8#include <bpf/bpf_core_read.h>
9
10char _license[] SEC("license") = "GPL";
11
12struct {
13 char in[256];
14 char out[256];
15 bool skip;
16} data = {};
17
18enum named_unsigned_enum64 {
19 UNSIGNED_ENUM64_VAL1 = 0x1ffffffffULL,
20 UNSIGNED_ENUM64_VAL2 = 0x2ffffffffULL,
21 UNSIGNED_ENUM64_VAL3 = 0x3ffffffffULL,
22};
23
24enum named_signed_enum64 {
25 SIGNED_ENUM64_VAL1 = 0x1ffffffffLL,
26 SIGNED_ENUM64_VAL2 = -2,
27 SIGNED_ENUM64_VAL3 = 0x3ffffffffLL,
28};
29
30struct core_reloc_enum64val_output {
31 bool unsigned_val1_exists;
32 bool unsigned_val2_exists;
33 bool unsigned_val3_exists;
34 bool signed_val1_exists;
35 bool signed_val2_exists;
36 bool signed_val3_exists;
37
38 long unsigned_val1;
39 long unsigned_val2;
40 long signed_val1;
41 long signed_val2;
42};
43
44SEC("raw_tracepoint/sys_enter")
45int test_core_enum64val(void *ctx)
46{
47#if __clang_major__ >= 15
48 struct core_reloc_enum64val_output *out = (void *)&data.out;
49 enum named_unsigned_enum64 named_unsigned = 0;
50 enum named_signed_enum64 named_signed = 0;
51
52 out->unsigned_val1_exists = bpf_core_enum_value_exists(named_unsigned, UNSIGNED_ENUM64_VAL1);
53 out->unsigned_val2_exists = bpf_core_enum_value_exists(enum named_unsigned_enum64, UNSIGNED_ENUM64_VAL2);
54 out->unsigned_val3_exists = bpf_core_enum_value_exists(enum named_unsigned_enum64, UNSIGNED_ENUM64_VAL3);
55 out->signed_val1_exists = bpf_core_enum_value_exists(named_signed, SIGNED_ENUM64_VAL1);
56 out->signed_val2_exists = bpf_core_enum_value_exists(enum named_signed_enum64, SIGNED_ENUM64_VAL2);
57 out->signed_val3_exists = bpf_core_enum_value_exists(enum named_signed_enum64, SIGNED_ENUM64_VAL3);
58
59 out->unsigned_val1 = bpf_core_enum_value(named_unsigned, UNSIGNED_ENUM64_VAL1);
60 out->unsigned_val2 = bpf_core_enum_value(named_unsigned, UNSIGNED_ENUM64_VAL2);
61 out->signed_val1 = bpf_core_enum_value(named_signed, SIGNED_ENUM64_VAL1);
62 out->signed_val2 = bpf_core_enum_value(named_signed, SIGNED_ENUM64_VAL2);
63 /* NAMED_ENUM64_VAL3 value is optional */
64
65#else
66 data.skip = true;
67#endif
68
69 return 0;
70}
71

source code of linux/tools/testing/selftests/bpf/progs/test_core_reloc_enum64val.c