FM / lzma

/usr/include/lzma

Name	Size	Mode	Actions
base.h	24858	0644	edit dl rm
bcj.h	2630	0644	edit dl rm
block.h	22106	0644	edit dl rm
check.h	4255	0644	edit dl rm
container.h	24844	0644	edit dl rm
delta.h	1865	0644	edit dl rm
filter.h	16429	0644	edit dl rm
hardware.h	2605	0644	edit dl rm
index.h	23491	0644	edit dl rm
index_hash.h	3914	0644	edit dl rm
lzma12.h	14743	0644	edit dl rm
stream_flags.h	8253	0644	edit dl rm
version.h	3497	0644	edit dl rm
vli.h	6547	0644	edit dl rm

Edit: /usr/include/lzma/check.h (4255B)

/**
 * \file        lzma/check.h
 * \brief       Integrity checks
 */

/*
 * Author: Lasse Collin
 *
 * This file has been put into the public domain.
 * You can do whatever you want with this file.
 *
 * See ../lzma.h for information about liblzma as a whole.
 */

#ifndef LZMA_H_INTERNAL
#	error Never include this file directly. Use <lzma.h> instead.
#endif

/**
 * \brief       Type of the integrity check (Check ID)
 *
 * The .xz format supports multiple types of checks that are calculated
 * from the uncompressed data. They vary in both speed and ability to
 * detect errors.
 */
typedef enum {
	LZMA_CHECK_NONE     = 0,
		/**<
		 * No Check is calculated.
		 *
		 * Size of the Check field: 0 bytes
		 */

LZMA_CHECK_CRC32    = 1,
		/**<
		 * CRC32 using the polynomial from the IEEE 802.3 standard
		 *
		 * Size of the Check field: 4 bytes
		 */

LZMA_CHECK_CRC64    = 4,
		/**<
		 * CRC64 using the polynomial from the ECMA-182 standard
		 *
		 * Size of the Check field: 8 bytes
		 */

LZMA_CHECK_SHA256   = 10
		/**<
		 * SHA-256
		 *
		 * Size of the Check field: 32 bytes
		 */
} lzma_check;

/**
 * \brief       Maximum valid Check ID
 *
 * The .xz file format specification specifies 16 Check IDs (0-15). Some
 * of them are only reserved, that is, no actual Check algorithm has been
 * assigned. When decoding, liblzma still accepts unknown Check IDs for
 * future compatibility. If a valid but unsupported Check ID is detected,
 * liblzma can indicate a warning; see the flags LZMA_TELL_NO_CHECK,
 * LZMA_TELL_UNSUPPORTED_CHECK, and LZMA_TELL_ANY_CHECK in container.h.
 */
#define LZMA_CHECK_ID_MAX 15

/**
 * \brief       Test if the given Check ID is supported
 *
 * Return true if the given Check ID is supported by this liblzma build.
 * Otherwise false is returned. It is safe to call this with a value that
 * is not in the range [0, 15]; in that case the return value is always false.
 *
 * You can assume that LZMA_CHECK_NONE and LZMA_CHECK_CRC32 are always
 * supported (even if liblzma is built with limited features).
 */
extern LZMA_API(lzma_bool) lzma_check_is_supported(lzma_check check)
		lzma_nothrow lzma_attr_const;

/**
 * \brief       Get the size of the Check field with the given Check ID
 *
 * Although not all Check IDs have a check algorithm associated, the size of
 * every Check is already frozen. This function returns the size (in bytes) of
 * the Check field with the specified Check ID. The values are:
 * { 0, 4, 4, 4, 8, 8, 8, 16, 16, 16, 32, 32, 32, 64, 64, 64 }
 *
 * If the argument is not in the range [0, 15], UINT32_MAX is returned.
 */
extern LZMA_API(uint32_t) lzma_check_size(lzma_check check)
		lzma_nothrow lzma_attr_const;

/**
 * \brief       Maximum size of a Check field
 */
#define LZMA_CHECK_SIZE_MAX 64

/**
 * \brief       Calculate CRC32
 *
 * Calculate CRC32 using the polynomial from the IEEE 802.3 standard.
 *
 * \param       buf     Pointer to the input buffer
 * \param       size    Size of the input buffer
 * \param       crc     Previously returned CRC value. This is used to
 *                      calculate the CRC of a big buffer in smaller chunks.
 *                      Set to zero when starting a new calculation.
 *
 * \return      Updated CRC value, which can be passed to this function
 *              again to continue CRC calculation.
 */
extern LZMA_API(uint32_t) lzma_crc32(
		const uint8_t *buf, size_t size, uint32_t crc)
		lzma_nothrow lzma_attr_pure;

/**
 * \brief       Calculate CRC64
 *
 * Calculate CRC64 using the polynomial from the ECMA-182 standard.
 *
 * This function is used similarly to lzma_crc32(). See its documentation.
 */
extern LZMA_API(uint64_t) lzma_crc64(
		const uint8_t *buf, size_t size, uint64_t crc)
		lzma_nothrow lzma_attr_pure;

/*
 * SHA-256 functions are currently not exported to public API.
 * Contact Lasse Collin if you think it should be.
 */

/**
 * \brief       Get the type of the integrity check
 *
 * This function can be called only immediately after lzma_code() has
 * returned LZMA_NO_CHECK, LZMA_UNSUPPORTED_CHECK, or LZMA_GET_CHECK.
 * Calling this function in any other situation has undefined behavior.
 */
extern LZMA_API(lzma_check) lzma_get_check(const lzma_stream *strm)
		lzma_nothrow;

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