mirror of
https://github.com/aaru-dps/libaaruformat.git
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92 lines
4.0 KiB
C
92 lines
4.0 KiB
C
/*
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* This file is part of the Aaru Data Preservation Suite.
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* Copyright (c) 2019-2025 Natalia Portillo.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBAARUFORMAT_HEADER_H
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#define LIBAARUFORMAT_HEADER_H
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#define AARU_HEADER_APP_NAME_LEN 64
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#define GUID_SIZE 16
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#pragma pack(push, 1)
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/**Header, at start of file */
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typedef struct AaruHeader {
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/**Header identifier, <see cref="AARU_MAGIC" /> */
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uint64_t identifier;
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/**UTF-16LE name of the application that created the image */
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uint8_t application[AARU_HEADER_APP_NAME_LEN];
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/**Image format major version. A new major version means a possibly incompatible change of format */
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uint8_t imageMajorVersion;
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/**Image format minor version. A new minor version indicates a compatible change of format */
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uint8_t imageMinorVersion;
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/**Major version of the application that created the image */
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uint8_t applicationMajorVersion;
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/**Minor version of the application that created the image */
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uint8_t applicationMinorVersion;
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/**Type of media contained on image */
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uint32_t mediaType;
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/**Offset to index */
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uint64_t indexOffset;
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/**Windows filetime (100 nanoseconds since 1601/01/01 00:00:00 UTC) of image creation time */
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int64_t creationTime;
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/**Windows filetime (100 nanoseconds since 1601/01/01 00:00:00 UTC) of image last written time */
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int64_t lastWrittenTime;
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} AaruHeader;
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/**Header, at start of file */
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typedef struct AaruHeaderV2 {
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/**Header identifier, see AARU_MAGIC */
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uint64_t identifier;
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/**UTF-16LE name of the application that created the image */
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uint8_t application[AARU_HEADER_APP_NAME_LEN];
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/**Image format major version. A new major version means a possibly incompatible change of format */
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uint8_t imageMajorVersion;
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/**Image format minor version. A new minor version indicates a compatible change of format */
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uint8_t imageMinorVersion;
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/**Major version of the application that created the image */
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uint8_t applicationMajorVersion;
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/**Minor version of the application that created the image */
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uint8_t applicationMinorVersion;
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/**Type of media contained on image */
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uint32_t mediaType;
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/**Offset to index */
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uint64_t indexOffset;
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/**Windows filetime (100 nanoseconds since 1601/01/01 00:00:00 UTC) of image creation time */
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int64_t creationTime;
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/**Windows filetime (100 nanoseconds since 1601/01/01 00:00:00 UTC) of image last written time */
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int64_t lastWrittenTime;
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/**Unique identifier that allows children images to recognize and find this image.*/
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uint8_t guid[GUID_SIZE];
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/**Block alignment shift. All blocks in the image are aligned at 2 << blockAlignmentShift bytes */
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uint8_t blockAlignmentShift;
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/**Data shift. All data blocks in the image contain 2 << dataShift items at most */
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uint8_t dataShift;
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/**Table shift. All deduplication tables in the image use this shift to calculate the position of an item */
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uint8_t tableShift;
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/**Features used in this image that if unsupported are still compatible for reading and writing implementations */
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uint64_t featureCompatible;
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/**Features used in this image that if unsupported are still compatible for reading implementations but not for writing */
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uint64_t featureCompatibleRo;
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/**Featured used in this image that if unsupported prevent reading or writing the image*/
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uint64_t featureIncompatible;
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} AaruHeaderV2;
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#pragma pack(pop)
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#endif //LIBAARUFORMAT_HEADER_H
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