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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Facebook
#include <linux/bpf.h>
#include <stdint.h>
#include <stdbool.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_core_read.h>
char _license[] SEC("license") = "GPL";
struct {
char in[256];
char out[256];
bool skip;
} data = {};
enum named_enum {
NAMED_ENUM_VAL1 = 1,
NAMED_ENUM_VAL2 = 2,
NAMED_ENUM_VAL3 = 3,
};
typedef enum {
ANON_ENUM_VAL1 = 0x10,
ANON_ENUM_VAL2 = 0x20,
ANON_ENUM_VAL3 = 0x30,
} anon_enum;
struct core_reloc_enumval_output {
bool named_val1_exists;
bool named_val2_exists;
bool named_val3_exists;
bool anon_val1_exists;
bool anon_val2_exists;
bool anon_val3_exists;
int named_val1;
int named_val2;
int anon_val1;
int anon_val2;
};
SEC("raw_tracepoint/sys_enter")
int test_core_enumval(void *ctx)
{
#if __has_builtin(__builtin_preserve_enum_value)
struct core_reloc_enumval_output *out = (void *)&data.out;
enum named_enum named = 0;
anon_enum anon = 0;
out->named_val1_exists = bpf_core_enum_value_exists(named, NAMED_ENUM_VAL1);
out->named_val2_exists = bpf_core_enum_value_exists(enum named_enum, NAMED_ENUM_VAL2);
out->named_val3_exists = bpf_core_enum_value_exists(enum named_enum, NAMED_ENUM_VAL3);
out->anon_val1_exists = bpf_core_enum_value_exists(anon, ANON_ENUM_VAL1);
out->anon_val2_exists = bpf_core_enum_value_exists(anon_enum, ANON_ENUM_VAL2);
out->anon_val3_exists = bpf_core_enum_value_exists(anon_enum, ANON_ENUM_VAL3);
out->named_val1 = bpf_core_enum_value(named, NAMED_ENUM_VAL1);
out->named_val2 = bpf_core_enum_value(named, NAMED_ENUM_VAL2);
/* NAMED_ENUM_VAL3 value is optional */
out->anon_val1 = bpf_core_enum_value(anon, ANON_ENUM_VAL1);
out->anon_val2 = bpf_core_enum_value(anon, ANON_ENUM_VAL2);
/* ANON_ENUM_VAL3 value is optional */
#else
data.skip = true;
#endif
return 0;
}
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