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