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41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include "util/attributes.h"
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//! The linker inserts the build id as an "elf external note" structure:
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typedef struct PACKED {
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uint32_t name_length;
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uint32_t data_length;
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uint32_t type; // NT_GNU_BUILD_ID = 3
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uint8_t data[]; // concatenated name ('GNU') + data (build id)
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} ElfExternalNote;
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// the build id is a unique identification for the built files. The default algo uses SHA1
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// to produce a 160 bit (20 byte sequence)
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#define BUILD_ID_EXPECTED_LEN (20)
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#define BUILD_ID_NAME_EXPECTED_LEN (4)
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#define BUILD_ID_TOTAL_EXPECTED_LEN (sizeof(ElfExternalNote) + \
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BUILD_ID_NAME_EXPECTED_LEN + BUILD_ID_EXPECTED_LEN)
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bool build_id_contains_gnu_build_id(const ElfExternalNote *note);
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