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lib/lz4: remove back-compat wrappers 

Remove the functions introduced as wrappers for providing backwards
compatibility to the prior LZ4 version.  They're not needed anymore
since there's no callers left.

Link: http://lkml.kernel.org/r/1486321748-19085-6-git-send-email-4sschmid@informatik.uni-hamburg.de
Signed-off-by: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
Cc: Bongkyu Kim <bongkyu.kim@lge.com>
Cc: Rui Salvaterra <rsalvaterra@gmail.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David S. Miller <davem@davemloft.net>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sven Schmidt 2017-02-24 15:01:25 -08:00 committed by Linus Torvalds
parent d21b5ff12d
commit 69c78423b8
4 changed files with 0 additions and 156 deletions
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69
include/linux/lz4.h
View File

@ -172,18 +172,6 @@ static inline int LZ4_compressBound(size_t isize)
return LZ4_COMPRESSBOUND(isize);
}
/**
* lz4_compressbound() - For backwards compatibility; see LZ4_compressBound
* @isize: Size of the input data
*
* Return: Max. size LZ4 may output in a "worst case" szenario
* (data not compressible)
*/
static inline int lz4_compressbound(size_t isize)
{
return LZ4_COMPRESSBOUND(isize);
}
/**
* LZ4_compress_default() - Compress data from source to dest
* @source: source address of the original data
@ -257,20 +245,6 @@ int LZ4_compress_fast(const char *source, char *dest, int inputSize,
int LZ4_compress_destSize(const char *source, char *dest, int *sourceSizePtr,
int targetDestSize, void *wrkmem);
/*
* lz4_compress() - For backward compatibility, see LZ4_compress_default
* @src: source address of the original data
* @src_len: size of the original data
* @dst: output buffer address of the compressed data. This requires 'dst'
* of size LZ4_COMPRESSBOUND
* @dst_len: is the output size, which is returned after compress done
* @workmem: address of the working memory.
*
* Return: Success if return 0, Error if return < 0
*/
int lz4_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
size_t *dst_len, void *wrkmem);
/*-************************************************************************
* Decompression Functions
**************************************************************************/
@ -346,34 +320,6 @@ int LZ4_decompress_safe(const char *source, char *dest, int compressedSize,
int LZ4_decompress_safe_partial(const char *source, char *dest,
int compressedSize, int targetOutputSize, int maxDecompressedSize);
/*
* lz4_decompress_unknownoutputsize() - For backwards compatibility,
* see LZ4_decompress_safe
* @src: source address of the compressed data
* @src_len: is the input size, therefore the compressed size
* @dest: output buffer address of the decompressed data
* which must be already allocated
* @dest_len: is the max size of the destination buffer, which is
* returned with actual size of decompressed data after decompress done
*
* Return: Success if return 0, Error if return (< 0)
*/
int lz4_decompress_unknownoutputsize(const unsigned char *src, size_t src_len,
unsigned char *dest, size_t *dest_len);
/**
* lz4_decompress() - For backwards cocmpatibility, see LZ4_decompress_fast
* @src: source address of the compressed data
* @src_len: is the input size, which is returned after decompress done
* @dest: output buffer address of the decompressed data,
* which must be already allocated
* @actual_dest_len: is the size of uncompressed data, supposing it's known
*
* Return: Success if return 0, Error if return (< 0)
*/
int lz4_decompress(const unsigned char *src, size_t *src_len,
unsigned char *dest, size_t actual_dest_len);
/*-************************************************************************
* LZ4 HC Compression
**************************************************************************/
@ -400,21 +346,6 @@ int lz4_decompress(const unsigned char *src, size_t *src_len,
int LZ4_compress_HC(const char *src, char *dst, int srcSize, int dstCapacity,
int compressionLevel, void *wrkmem);
/**
* lz4hc_compress() - For backwards compatibility, see LZ4_compress_HC
* @src: source address of the original data
* @src_len: size of the original data
* @dst: output buffer address of the compressed data. This requires 'dst'
* of size LZ4_COMPRESSBOUND.
* @dst_len: is the output size, which is returned after compress done
* @wrkmem: address of the working memory.
* This requires 'workmem' of size LZ4HC_MEM_COMPRESS.
*
* Return : Success if return 0, Error if return (< 0)
*/
int lz4hc_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
size_t *dst_len, void *wrkmem);
/**
* LZ4_resetStreamHC() - Init an allocated 'LZ4_streamHC_t' structure
* @streamHCPtr: pointer to the 'LZ4_streamHC_t' structure

22
lib/lz4/lz4_compress.c
View File

@ -936,27 +936,5 @@ int LZ4_compress_fast_continue(LZ4_stream_t *LZ4_stream, const char *source,
}
EXPORT_SYMBOL(LZ4_compress_fast_continue);
/*-******************************
* For backwards compatibility
********************************/
int lz4_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
size_t *dst_len, void *wrkmem) {
*dst_len = LZ4_compress_default(src, dst, src_len,
*dst_len, wrkmem);
/*
* Prior lz4_compress will return -1 in case of error
* and 0 on success
* while new LZ4_compress_fast/default
* returns 0 in case of error
* and the output length on success
*/
if (!*dst_len)
return -1;
else
return 0;
}
EXPORT_SYMBOL(lz4_compress);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("LZ4 compressor");

42
lib/lz4/lz4_decompress.c
View File

@ -493,46 +493,6 @@ int LZ4_decompress_fast_usingDict(const char *source, char *dest,
originalSize, 0, dictStart, dictSize);
}
/*-******************************
* For backwards compatibility
********************************/
int lz4_decompress_unknownoutputsize(const unsigned char *src,
size_t src_len, unsigned char *dest, size_t *dest_len) {
*dest_len = LZ4_decompress_safe(src, dest,
src_len, *dest_len);
/*
* Prior lz4_decompress_unknownoutputsize will return
* 0 for success and a negative result for error
* new LZ4_decompress_safe returns
* - the length of data read on success
* - and also a negative result on error
* meaning when result > 0, we just return 0 here
*/
if (src_len > 0)
return 0;
else
return -1;
}
int lz4_decompress(const unsigned char *src, size_t *src_len,
unsigned char *dest, size_t actual_dest_len) {
*src_len = LZ4_decompress_fast(src, dest, actual_dest_len);
/*
* Prior lz4_decompress will return
* 0 for success and a negative result for error
* new LZ4_decompress_fast returns
* - the length of data read on success
* - and also a negative result on error
* meaning when result > 0, we just return 0 here
*/
if (*src_len > 0)
return 0;
else
return -1;
}
#ifndef STATIC
EXPORT_SYMBOL(LZ4_decompress_safe);
EXPORT_SYMBOL(LZ4_decompress_safe_partial);
@ -542,8 +502,6 @@ EXPORT_SYMBOL(LZ4_decompress_safe_continue);
EXPORT_SYMBOL(LZ4_decompress_fast_continue);
EXPORT_SYMBOL(LZ4_decompress_safe_usingDict);
EXPORT_SYMBOL(LZ4_decompress_fast_usingDict);
EXPORT_SYMBOL(lz4_decompress_unknownoutputsize);
EXPORT_SYMBOL(lz4_decompress);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("LZ4 decompressor");

23
lib/lz4/lz4hc_compress.c
View File

@ -765,28 +765,5 @@ int LZ4_saveDictHC(
}
EXPORT_SYMBOL(LZ4_saveDictHC);
/*-******************************
* For backwards compatibility
********************************/
int lz4hc_compress(const unsigned char *src, size_t src_len,
unsigned char *dst, size_t *dst_len, void *wrkmem)
{
*dst_len = LZ4_compress_HC(src, dst, src_len,
*dst_len, LZ4HC_DEFAULT_CLEVEL, wrkmem);
/*
* Prior lz4hc_compress will return -1 in case of error
* and 0 on success
* while new LZ4_compress_HC
* returns 0 in case of error
* and the output length on success
*/
if (!*dst_len)
return -1;
else
return 0;
}
EXPORT_SYMBOL(lz4hc_compress);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("LZ4 HC compressor");