mirror of https://github.com/borgbackup/borg.git
upgrade bundled lz4 to 1.9.4
This commit is contained in:
Thomas Waldmann
parent
bb473e2daa
commit
a3998d0663
File diff suppressed because it is too large
Load Diff
|
|
@ -1,7 +1,7 @@
|
|||
/*
|
||||
* LZ4 - Fast LZ compression algorithm
|
||||
* Header File
|
||||
* Copyright (C) 2011-present, Yann Collet.
|
||||
* Copyright (C) 2011-2020, Yann Collet.
|
||||
|
||||
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
|
||||
|
||||
|
|
@ -97,36 +97,77 @@ extern "C" {
|
|||
# define LZ4LIB_API LZ4LIB_VISIBILITY
|
||||
#endif
|
||||
|
||||
/*! LZ4_FREESTANDING :
|
||||
* When this macro is set to 1, it enables "freestanding mode" that is
|
||||
* suitable for typical freestanding environment which doesn't support
|
||||
* standard C library.
|
||||
*
|
||||
* - LZ4_FREESTANDING is a compile-time switch.
|
||||
* - It requires the following macros to be defined:
|
||||
* LZ4_memcpy, LZ4_memmove, LZ4_memset.
|
||||
* - It only enables LZ4/HC functions which don't use heap.
|
||||
* All LZ4F_* functions are not supported.
|
||||
* - See tests/freestanding.c to check its basic setup.
|
||||
*/
|
||||
#if defined(LZ4_FREESTANDING) && (LZ4_FREESTANDING == 1)
|
||||
# define LZ4_HEAPMODE 0
|
||||
# define LZ4HC_HEAPMODE 0
|
||||
# define LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION 1
|
||||
# if !defined(LZ4_memcpy)
|
||||
# error "LZ4_FREESTANDING requires macro 'LZ4_memcpy'."
|
||||
# endif
|
||||
# if !defined(LZ4_memset)
|
||||
# error "LZ4_FREESTANDING requires macro 'LZ4_memset'."
|
||||
# endif
|
||||
# if !defined(LZ4_memmove)
|
||||
# error "LZ4_FREESTANDING requires macro 'LZ4_memmove'."
|
||||
# endif
|
||||
#elif ! defined(LZ4_FREESTANDING)
|
||||
# define LZ4_FREESTANDING 0
|
||||
#endif
|
||||
|
||||
|
||||
/*------ Version ------*/
|
||||
#define LZ4_VERSION_MAJOR 1 /* for breaking interface changes */
|
||||
#define LZ4_VERSION_MINOR 9 /* for new (non-breaking) interface capabilities */
|
||||
#define LZ4_VERSION_RELEASE 2 /* for tweaks, bug-fixes, or development */
|
||||
#define LZ4_VERSION_RELEASE 4 /* for tweaks, bug-fixes, or development */
|
||||
|
||||
#define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
|
||||
|
||||
#define LZ4_LIB_VERSION LZ4_VERSION_MAJOR.LZ4_VERSION_MINOR.LZ4_VERSION_RELEASE
|
||||
#define LZ4_QUOTE(str) #str
|
||||
#define LZ4_EXPAND_AND_QUOTE(str) LZ4_QUOTE(str)
|
||||
#define LZ4_VERSION_STRING LZ4_EXPAND_AND_QUOTE(LZ4_LIB_VERSION)
|
||||
#define LZ4_VERSION_STRING LZ4_EXPAND_AND_QUOTE(LZ4_LIB_VERSION) /* requires v1.7.3+ */
|
||||
|
||||
LZ4LIB_API int LZ4_versionNumber (void); /**< library version number; useful to check dll version */
|
||||
LZ4LIB_API const char* LZ4_versionString (void); /**< library version string; useful to check dll version */
|
||||
LZ4LIB_API int LZ4_versionNumber (void); /**< library version number; useful to check dll version; requires v1.3.0+ */
|
||||
LZ4LIB_API const char* LZ4_versionString (void); /**< library version string; useful to check dll version; requires v1.7.5+ */
|
||||
|
||||
|
||||
/*-************************************
|
||||
* Tuning parameter
|
||||
**************************************/
|
||||
#define LZ4_MEMORY_USAGE_MIN 10
|
||||
#define LZ4_MEMORY_USAGE_DEFAULT 14
|
||||
#define LZ4_MEMORY_USAGE_MAX 20
|
||||
|
||||
/*!
|
||||
* LZ4_MEMORY_USAGE :
|
||||
* Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
|
||||
* Increasing memory usage improves compression ratio.
|
||||
* Reduced memory usage may improve speed, thanks to better cache locality.
|
||||
* Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; )
|
||||
* Increasing memory usage improves compression ratio, at the cost of speed.
|
||||
* Reduced memory usage may improve speed at the cost of ratio, thanks to better cache locality.
|
||||
* Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
|
||||
*/
|
||||
#ifndef LZ4_MEMORY_USAGE
|
||||
# define LZ4_MEMORY_USAGE 14
|
||||
# define LZ4_MEMORY_USAGE LZ4_MEMORY_USAGE_DEFAULT
|
||||
#endif
|
||||
|
||||
#if (LZ4_MEMORY_USAGE < LZ4_MEMORY_USAGE_MIN)
|
||||
# error "LZ4_MEMORY_USAGE is too small !"
|
||||
#endif
|
||||
|
||||
#if (LZ4_MEMORY_USAGE > LZ4_MEMORY_USAGE_MAX)
|
||||
# error "LZ4_MEMORY_USAGE is too large !"
|
||||
#endif
|
||||
|
||||
/*-************************************
|
||||
* Simple Functions
|
||||
|
|
@ -186,7 +227,8 @@ LZ4LIB_API int LZ4_compressBound(int inputSize);
|
|||
The larger the acceleration value, the faster the algorithm, but also the lesser the compression.
|
||||
It's a trade-off. It can be fine tuned, with each successive value providing roughly +~3% to speed.
|
||||
An acceleration value of "1" is the same as regular LZ4_compress_default()
|
||||
Values <= 0 will be replaced by ACCELERATION_DEFAULT (currently == 1, see lz4.c).
|
||||
Values <= 0 will be replaced by LZ4_ACCELERATION_DEFAULT (currently == 1, see lz4.c).
|
||||
Values > LZ4_ACCELERATION_MAX will be replaced by LZ4_ACCELERATION_MAX (currently == 65537, see lz4.c).
|
||||
*/
|
||||
LZ4LIB_API int LZ4_compress_fast (const char* src, char* dst, int srcSize, int dstCapacity, int acceleration);
|
||||
|
||||
|
|
@ -212,7 +254,18 @@ LZ4LIB_API int LZ4_compress_fast_extState (void* state, const char* src, char* d
|
|||
* New value is necessarily <= input value.
|
||||
* @return : Nb bytes written into 'dst' (necessarily <= targetDestSize)
|
||||
* or 0 if compression fails.
|
||||
*/
|
||||
*
|
||||
* Note : from v1.8.2 to v1.9.1, this function had a bug (fixed un v1.9.2+):
|
||||
* the produced compressed content could, in specific circumstances,
|
||||
* require to be decompressed into a destination buffer larger
|
||||
* by at least 1 byte than the content to decompress.
|
||||
* If an application uses `LZ4_compress_destSize()`,
|
||||
* it's highly recommended to update liblz4 to v1.9.2 or better.
|
||||
* If this can't be done or ensured,
|
||||
* the receiving decompression function should provide
|
||||
* a dstCapacity which is > decompressedSize, by at least 1 byte.
|
||||
* See https://github.com/lz4/lz4/issues/859 for details
|
||||
*/
|
||||
LZ4LIB_API int LZ4_compress_destSize (const char* src, char* dst, int* srcSizePtr, int targetDstSize);
|
||||
|
||||
|
||||
|
|
@ -220,25 +273,35 @@ LZ4LIB_API int LZ4_compress_destSize (const char* src, char* dst, int* srcSizePt
|
|||
* Decompress an LZ4 compressed block, of size 'srcSize' at position 'src',
|
||||
* into destination buffer 'dst' of size 'dstCapacity'.
|
||||
* Up to 'targetOutputSize' bytes will be decoded.
|
||||
* The function stops decoding on reaching this objective,
|
||||
* which can boost performance when only the beginning of a block is required.
|
||||
* The function stops decoding on reaching this objective.
|
||||
* This can be useful to boost performance
|
||||
* whenever only the beginning of a block is required.
|
||||
*
|
||||
* @return : the number of bytes decoded in `dst` (necessarily <= dstCapacity)
|
||||
* @return : the number of bytes decoded in `dst` (necessarily <= targetOutputSize)
|
||||
* If source stream is detected malformed, function returns a negative result.
|
||||
*
|
||||
* Note : @return can be < targetOutputSize, if compressed block contains less data.
|
||||
* Note 1 : @return can be < targetOutputSize, if compressed block contains less data.
|
||||
*
|
||||
* Note 2 : this function features 2 parameters, targetOutputSize and dstCapacity,
|
||||
* and expects targetOutputSize <= dstCapacity.
|
||||
* It effectively stops decoding on reaching targetOutputSize,
|
||||
* Note 2 : targetOutputSize must be <= dstCapacity
|
||||
*
|
||||
* Note 3 : this function effectively stops decoding on reaching targetOutputSize,
|
||||
* so dstCapacity is kind of redundant.
|
||||
* This is because in a previous version of this function,
|
||||
* decoding operation would not "break" a sequence in the middle.
|
||||
* As a consequence, there was no guarantee that decoding would stop at exactly targetOutputSize,
|
||||
* This is because in older versions of this function,
|
||||
* decoding operation would still write complete sequences.
|
||||
* Therefore, there was no guarantee that it would stop writing at exactly targetOutputSize,
|
||||
* it could write more bytes, though only up to dstCapacity.
|
||||
* Some "margin" used to be required for this operation to work properly.
|
||||
* This is no longer necessary.
|
||||
* The function nonetheless keeps its signature, in an effort to not break API.
|
||||
* Thankfully, this is no longer necessary.
|
||||
* The function nonetheless keeps the same signature, in an effort to preserve API compatibility.
|
||||
*
|
||||
* Note 4 : If srcSize is the exact size of the block,
|
||||
* then targetOutputSize can be any value,
|
||||
* including larger than the block's decompressed size.
|
||||
* The function will, at most, generate block's decompressed size.
|
||||
*
|
||||
* Note 5 : If srcSize is _larger_ than block's compressed size,
|
||||
* then targetOutputSize **MUST** be <= block's decompressed size.
|
||||
* Otherwise, *silent corruption will occur*.
|
||||
*/
|
||||
LZ4LIB_API int LZ4_decompress_safe_partial (const char* src, char* dst, int srcSize, int targetOutputSize, int dstCapacity);
|
||||
|
||||
|
|
@ -248,8 +311,25 @@ LZ4LIB_API int LZ4_decompress_safe_partial (const char* src, char* dst, int srcS
|
|||
***********************************************/
|
||||
typedef union LZ4_stream_u LZ4_stream_t; /* incomplete type (defined later) */
|
||||
|
||||
/**
|
||||
Note about RC_INVOKED
|
||||
|
||||
- RC_INVOKED is predefined symbol of rc.exe (the resource compiler which is part of MSVC/Visual Studio).
|
||||
https://docs.microsoft.com/en-us/windows/win32/menurc/predefined-macros
|
||||
|
||||
- Since rc.exe is a legacy compiler, it truncates long symbol (> 30 chars)
|
||||
and reports warning "RC4011: identifier truncated".
|
||||
|
||||
- To eliminate the warning, we surround long preprocessor symbol with
|
||||
"#if !defined(RC_INVOKED) ... #endif" block that means
|
||||
"skip this block when rc.exe is trying to read it".
|
||||
*/
|
||||
#if !defined(RC_INVOKED) /* https://docs.microsoft.com/en-us/windows/win32/menurc/predefined-macros */
|
||||
#if !defined(LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION)
|
||||
LZ4LIB_API LZ4_stream_t* LZ4_createStream(void);
|
||||
LZ4LIB_API int LZ4_freeStream (LZ4_stream_t* streamPtr);
|
||||
#endif /* !defined(LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION) */
|
||||
#endif
|
||||
|
||||
/*! LZ4_resetStream_fast() : v1.9.0+
|
||||
* Use this to prepare an LZ4_stream_t for a new chain of dependent blocks
|
||||
|
|
@ -333,8 +413,12 @@ typedef union LZ4_streamDecode_u LZ4_streamDecode_t; /* tracking context */
|
|||
* creation / destruction of streaming decompression tracking context.
|
||||
* A tracking context can be re-used multiple times.
|
||||
*/
|
||||
#if !defined(RC_INVOKED) /* https://docs.microsoft.com/en-us/windows/win32/menurc/predefined-macros */
|
||||
#if !defined(LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION)
|
||||
LZ4LIB_API LZ4_streamDecode_t* LZ4_createStreamDecode(void);
|
||||
LZ4LIB_API int LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream);
|
||||
#endif /* !defined(LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION) */
|
||||
#endif
|
||||
|
||||
/*! LZ4_setStreamDecode() :
|
||||
* An LZ4_streamDecode_t context can be allocated once and re-used multiple times.
|
||||
|
|
@ -384,7 +468,10 @@ LZ4LIB_API int LZ4_decoderRingBufferSize(int maxBlockSize);
|
|||
* save the last 64KB of decoded data into a safe buffer where it can't be modified during decompression,
|
||||
* then indicate where this data is saved using LZ4_setStreamDecode(), before decompressing next block.
|
||||
*/
|
||||
LZ4LIB_API int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* src, char* dst, int srcSize, int dstCapacity);
|
||||
LZ4LIB_API int
|
||||
LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode,
|
||||
const char* src, char* dst,
|
||||
int srcSize, int dstCapacity);
|
||||
|
||||
|
||||
/*! LZ4_decompress_*_usingDict() :
|
||||
|
|
@ -395,7 +482,16 @@ LZ4LIB_API int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecod
|
|||
* Performance tip : Decompression speed can be substantially increased
|
||||
* when dst == dictStart + dictSize.
|
||||
*/
|
||||
LZ4LIB_API int LZ4_decompress_safe_usingDict (const char* src, char* dst, int srcSize, int dstCapcity, const char* dictStart, int dictSize);
|
||||
LZ4LIB_API int
|
||||
LZ4_decompress_safe_usingDict(const char* src, char* dst,
|
||||
int srcSize, int dstCapacity,
|
||||
const char* dictStart, int dictSize);
|
||||
|
||||
LZ4LIB_API int
|
||||
LZ4_decompress_safe_partial_usingDict(const char* src, char* dst,
|
||||
int compressedSize,
|
||||
int targetOutputSize, int maxOutputSize,
|
||||
const char* dictStart, int dictSize);
|
||||
|
||||
#endif /* LZ4_H_2983827168210 */
|
||||
|
||||
|
|
@ -474,13 +570,15 @@ LZ4LIB_STATIC_API int LZ4_compress_fast_extState_fastReset (void* state, const c
|
|||
* stream (and source buffer) must remain in-place / accessible / unchanged
|
||||
* through the completion of the first compression call on the stream.
|
||||
*/
|
||||
LZ4LIB_STATIC_API void LZ4_attach_dictionary(LZ4_stream_t* workingStream, const LZ4_stream_t* dictionaryStream);
|
||||
LZ4LIB_STATIC_API void
|
||||
LZ4_attach_dictionary(LZ4_stream_t* workingStream,
|
||||
const LZ4_stream_t* dictionaryStream);
|
||||
|
||||
|
||||
/*! In-place compression and decompression
|
||||
*
|
||||
* It's possible to have input and output sharing the same buffer,
|
||||
* for highly contrained memory environments.
|
||||
* for highly constrained memory environments.
|
||||
* In both cases, it requires input to lay at the end of the buffer,
|
||||
* and decompression to start at beginning of the buffer.
|
||||
* Buffer size must feature some margin, hence be larger than final size.
|
||||
|
|
@ -547,74 +645,52 @@ LZ4LIB_STATIC_API void LZ4_attach_dictionary(LZ4_stream_t* workingStream, const
|
|||
#define LZ4_H_98237428734687
|
||||
|
||||
/*-************************************************************
|
||||
* PRIVATE DEFINITIONS
|
||||
* Private Definitions
|
||||
**************************************************************
|
||||
* Do not use these definitions directly.
|
||||
* They are only exposed to allow static allocation of `LZ4_stream_t` and `LZ4_streamDecode_t`.
|
||||
* Accessing members will expose code to API and/or ABI break in future versions of the library.
|
||||
* Accessing members will expose user code to API and/or ABI break in future versions of the library.
|
||||
**************************************************************/
|
||||
#define LZ4_HASHLOG (LZ4_MEMORY_USAGE-2)
|
||||
#define LZ4_HASHTABLESIZE (1 << LZ4_MEMORY_USAGE)
|
||||
#define LZ4_HASH_SIZE_U32 (1 << LZ4_HASHLOG) /* required as macro for static allocation */
|
||||
|
||||
#if defined(__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
|
||||
#include <stdint.h>
|
||||
|
||||
typedef struct LZ4_stream_t_internal LZ4_stream_t_internal;
|
||||
struct LZ4_stream_t_internal {
|
||||
uint32_t hashTable[LZ4_HASH_SIZE_U32];
|
||||
uint32_t currentOffset;
|
||||
uint16_t dirty;
|
||||
uint16_t tableType;
|
||||
const uint8_t* dictionary;
|
||||
const LZ4_stream_t_internal* dictCtx;
|
||||
uint32_t dictSize;
|
||||
};
|
||||
|
||||
typedef struct {
|
||||
const uint8_t* externalDict;
|
||||
size_t extDictSize;
|
||||
const uint8_t* prefixEnd;
|
||||
size_t prefixSize;
|
||||
} LZ4_streamDecode_t_internal;
|
||||
|
||||
# include <stdint.h>
|
||||
typedef int8_t LZ4_i8;
|
||||
typedef uint8_t LZ4_byte;
|
||||
typedef uint16_t LZ4_u16;
|
||||
typedef uint32_t LZ4_u32;
|
||||
#else
|
||||
|
||||
typedef struct LZ4_stream_t_internal LZ4_stream_t_internal;
|
||||
struct LZ4_stream_t_internal {
|
||||
unsigned int hashTable[LZ4_HASH_SIZE_U32];
|
||||
unsigned int currentOffset;
|
||||
unsigned short dirty;
|
||||
unsigned short tableType;
|
||||
const unsigned char* dictionary;
|
||||
const LZ4_stream_t_internal* dictCtx;
|
||||
unsigned int dictSize;
|
||||
};
|
||||
|
||||
typedef struct {
|
||||
const unsigned char* externalDict;
|
||||
const unsigned char* prefixEnd;
|
||||
size_t extDictSize;
|
||||
size_t prefixSize;
|
||||
} LZ4_streamDecode_t_internal;
|
||||
|
||||
typedef signed char LZ4_i8;
|
||||
typedef unsigned char LZ4_byte;
|
||||
typedef unsigned short LZ4_u16;
|
||||
typedef unsigned int LZ4_u32;
|
||||
#endif
|
||||
|
||||
/*! LZ4_stream_t :
|
||||
* information structure to track an LZ4 stream.
|
||||
* LZ4_stream_t can also be created using LZ4_createStream(), which is recommended.
|
||||
* The structure definition can be convenient for static allocation
|
||||
* (on stack, or as part of larger structure).
|
||||
* Init this structure with LZ4_initStream() before first use.
|
||||
* note : only use this definition in association with static linking !
|
||||
* this definition is not API/ABI safe, and may change in a future version.
|
||||
*/
|
||||
#define LZ4_STREAMSIZE_U64 ((1 << (LZ4_MEMORY_USAGE-3)) + 4 + ((sizeof(void*)==16) ? 4 : 0) /*AS-400*/ )
|
||||
#define LZ4_STREAMSIZE (LZ4_STREAMSIZE_U64 * sizeof(unsigned long long))
|
||||
* Never ever use below internal definitions directly !
|
||||
* These definitions are not API/ABI safe, and may change in future versions.
|
||||
* If you need static allocation, declare or allocate an LZ4_stream_t object.
|
||||
**/
|
||||
|
||||
typedef struct LZ4_stream_t_internal LZ4_stream_t_internal;
|
||||
struct LZ4_stream_t_internal {
|
||||
LZ4_u32 hashTable[LZ4_HASH_SIZE_U32];
|
||||
const LZ4_byte* dictionary;
|
||||
const LZ4_stream_t_internal* dictCtx;
|
||||
LZ4_u32 currentOffset;
|
||||
LZ4_u32 tableType;
|
||||
LZ4_u32 dictSize;
|
||||
/* Implicit padding to ensure structure is aligned */
|
||||
};
|
||||
|
||||
#define LZ4_STREAM_MINSIZE ((1UL << LZ4_MEMORY_USAGE) + 32) /* static size, for inter-version compatibility */
|
||||
union LZ4_stream_u {
|
||||
unsigned long long table[LZ4_STREAMSIZE_U64];
|
||||
char minStateSize[LZ4_STREAM_MINSIZE];
|
||||
LZ4_stream_t_internal internal_donotuse;
|
||||
} ; /* previously typedef'd to LZ4_stream_t */
|
||||
}; /* previously typedef'd to LZ4_stream_t */
|
||||
|
||||
|
||||
/*! LZ4_initStream() : v1.9.0+
|
||||
* An LZ4_stream_t structure must be initialized at least once.
|
||||
|
|
@ -629,21 +705,25 @@ union LZ4_stream_u {
|
|||
* In which case, the function will @return NULL.
|
||||
* Note2: An LZ4_stream_t structure guarantees correct alignment and size.
|
||||
* Note3: Before v1.9.0, use LZ4_resetStream() instead
|
||||
*/
|
||||
**/
|
||||
LZ4LIB_API LZ4_stream_t* LZ4_initStream (void* buffer, size_t size);
|
||||
|
||||
|
||||
/*! LZ4_streamDecode_t :
|
||||
* information structure to track an LZ4 stream during decompression.
|
||||
* init this structure using LZ4_setStreamDecode() before first use.
|
||||
* note : only use in association with static linking !
|
||||
* this definition is not API/ABI safe,
|
||||
* and may change in a future version !
|
||||
*/
|
||||
#define LZ4_STREAMDECODESIZE_U64 (4 + ((sizeof(void*)==16) ? 2 : 0) /*AS-400*/ )
|
||||
#define LZ4_STREAMDECODESIZE (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))
|
||||
* Never ever use below internal definitions directly !
|
||||
* These definitions are not API/ABI safe, and may change in future versions.
|
||||
* If you need static allocation, declare or allocate an LZ4_streamDecode_t object.
|
||||
**/
|
||||
typedef struct {
|
||||
const LZ4_byte* externalDict;
|
||||
const LZ4_byte* prefixEnd;
|
||||
size_t extDictSize;
|
||||
size_t prefixSize;
|
||||
} LZ4_streamDecode_t_internal;
|
||||
|
||||
#define LZ4_STREAMDECODE_MINSIZE 32
|
||||
union LZ4_streamDecode_u {
|
||||
unsigned long long table[LZ4_STREAMDECODESIZE_U64];
|
||||
char minStateSize[LZ4_STREAMDECODE_MINSIZE];
|
||||
LZ4_streamDecode_t_internal internal_donotuse;
|
||||
} ; /* previously typedef'd to LZ4_streamDecode_t */
|
||||
|
||||
|
|
@ -667,22 +747,21 @@ union LZ4_streamDecode_u {
|
|||
#ifdef LZ4_DISABLE_DEPRECATE_WARNINGS
|
||||
# define LZ4_DEPRECATED(message) /* disable deprecation warnings */
|
||||
#else
|
||||
# define LZ4_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
|
||||
# if defined (__cplusplus) && (__cplusplus >= 201402) /* C++14 or greater */
|
||||
# define LZ4_DEPRECATED(message) [[deprecated(message)]]
|
||||
# elif (LZ4_GCC_VERSION >= 405) || defined(__clang__)
|
||||
# define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
|
||||
# elif (LZ4_GCC_VERSION >= 301)
|
||||
# define LZ4_DEPRECATED(message) __attribute__((deprecated))
|
||||
# elif defined(_MSC_VER)
|
||||
# define LZ4_DEPRECATED(message) __declspec(deprecated(message))
|
||||
# elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ * 10 + __GNUC_MINOR__ >= 45))
|
||||
# define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
|
||||
# elif defined(__GNUC__) && (__GNUC__ * 10 + __GNUC_MINOR__ >= 31)
|
||||
# define LZ4_DEPRECATED(message) __attribute__((deprecated))
|
||||
# else
|
||||
# pragma message("WARNING: You need to implement LZ4_DEPRECATED for this compiler")
|
||||
# define LZ4_DEPRECATED(message)
|
||||
# pragma message("WARNING: LZ4_DEPRECATED needs custom implementation for this compiler")
|
||||
# define LZ4_DEPRECATED(message) /* disabled */
|
||||
# endif
|
||||
#endif /* LZ4_DISABLE_DEPRECATE_WARNINGS */
|
||||
|
||||
/* Obsolete compression functions */
|
||||
/*! Obsolete compression functions (since v1.7.3) */
|
||||
LZ4_DEPRECATED("use LZ4_compress_default() instead") LZ4LIB_API int LZ4_compress (const char* src, char* dest, int srcSize);
|
||||
LZ4_DEPRECATED("use LZ4_compress_default() instead") LZ4LIB_API int LZ4_compress_limitedOutput (const char* src, char* dest, int srcSize, int maxOutputSize);
|
||||
LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") LZ4LIB_API int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize);
|
||||
|
|
@ -690,11 +769,12 @@ LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") LZ4LIB_API int LZ4_co
|
|||
LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") LZ4LIB_API int LZ4_compress_continue (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize);
|
||||
LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") LZ4LIB_API int LZ4_compress_limitedOutput_continue (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize, int maxOutputSize);
|
||||
|
||||
/* Obsolete decompression functions */
|
||||
/*! Obsolete decompression functions (since v1.8.0) */
|
||||
LZ4_DEPRECATED("use LZ4_decompress_fast() instead") LZ4LIB_API int LZ4_uncompress (const char* source, char* dest, int outputSize);
|
||||
LZ4_DEPRECATED("use LZ4_decompress_safe() instead") LZ4LIB_API int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize);
|
||||
|
||||
/* Obsolete streaming functions; degraded functionality; do not use!
|
||||
/* Obsolete streaming functions (since v1.7.0)
|
||||
* degraded functionality; do not use!
|
||||
*
|
||||
* In order to perform streaming compression, these functions depended on data
|
||||
* that is no longer tracked in the state. They have been preserved as well as
|
||||
|
|
@ -708,23 +788,22 @@ LZ4_DEPRECATED("Use LZ4_createStream() instead") LZ4LIB_API int LZ4_sizeofStre
|
|||
LZ4_DEPRECATED("Use LZ4_resetStream() instead") LZ4LIB_API int LZ4_resetStreamState(void* state, char* inputBuffer);
|
||||
LZ4_DEPRECATED("Use LZ4_saveDict() instead") LZ4LIB_API char* LZ4_slideInputBuffer (void* state);
|
||||
|
||||
/* Obsolete streaming decoding functions */
|
||||
/*! Obsolete streaming decoding functions (since v1.7.0) */
|
||||
LZ4_DEPRECATED("use LZ4_decompress_safe_usingDict() instead") LZ4LIB_API int LZ4_decompress_safe_withPrefix64k (const char* src, char* dst, int compressedSize, int maxDstSize);
|
||||
LZ4_DEPRECATED("use LZ4_decompress_fast_usingDict() instead") LZ4LIB_API int LZ4_decompress_fast_withPrefix64k (const char* src, char* dst, int originalSize);
|
||||
|
||||
/*! LZ4_decompress_fast() : **unsafe!**
|
||||
/*! Obsolete LZ4_decompress_fast variants (since v1.9.0) :
|
||||
* These functions used to be faster than LZ4_decompress_safe(),
|
||||
* but it has changed, and they are now slower than LZ4_decompress_safe().
|
||||
* but this is no longer the case. They are now slower.
|
||||
* This is because LZ4_decompress_fast() doesn't know the input size,
|
||||
* and therefore must progress more cautiously in the input buffer to not read beyond the end of block.
|
||||
* and therefore must progress more cautiously into the input buffer to not read beyond the end of block.
|
||||
* On top of that `LZ4_decompress_fast()` is not protected vs malformed or malicious inputs, making it a security liability.
|
||||
* As a consequence, LZ4_decompress_fast() is strongly discouraged, and deprecated.
|
||||
*
|
||||
* The last remaining LZ4_decompress_fast() specificity is that
|
||||
* it can decompress a block without knowing its compressed size.
|
||||
* Such functionality could be achieved in a more secure manner,
|
||||
* by also providing the maximum size of input buffer,
|
||||
* but it would require new prototypes, and adaptation of the implementation to this new use case.
|
||||
* Such functionality can be achieved in a more secure manner
|
||||
* by employing LZ4_decompress_safe_partial().
|
||||
*
|
||||
* Parameters:
|
||||
* originalSize : is the uncompressed size to regenerate.
|
||||
|
|
@ -739,7 +818,6 @@ LZ4_DEPRECATED("use LZ4_decompress_fast_usingDict() instead") LZ4LIB_API int LZ4
|
|||
* But they may happen if input data is invalid (error or intentional tampering).
|
||||
* As a consequence, use these functions in trusted environments with trusted data **only**.
|
||||
*/
|
||||
|
||||
LZ4_DEPRECATED("This function is deprecated and unsafe. Consider using LZ4_decompress_safe() instead")
|
||||
LZ4LIB_API int LZ4_decompress_fast (const char* src, char* dst, int originalSize);
|
||||
LZ4_DEPRECATED("This function is deprecated and unsafe. Consider using LZ4_decompress_safe_continue() instead")
|
||||
|
|
|
|||
Loading…
Reference in New Issue