函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\zstd\decompress.c Create Date:2022-07-27 08:04:47
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ZSTD_decodeSeqHeaders

函数原型：size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx *dctx, int *nbSeqPtr, const void *src, size_t srcSize)

返回类型：size_t

参数：

类型参数名称
ZSTD_DCtx *dctx
int *nbSeqPtr
const void *src
size_tsrcSize
796  istart等于src
797  iend等于istart加srcSize
798  ip等于istart
801  如果srcSize小于bSeq==0 则返回:-***************************************** Error codes handling(srcSize_wrong)
806  nbSeq等于ip自加
807  如果非nbSeq则
808  nbSeqPtr等于0
809  返回:1
811  如果nbSeq大于0x7F则
812  如果nbSeq恒等于0xFF则
816  否则
817  如果ip大于等于iend则返回:-***************************************** Error codes handling(srcSize_wrong)
819  nbSeq等于nbSeq减0x80左移8位的值加ip自加
822  nbSeqPtr等于nbSeq
826  如果ip加4大于iend则返回:-***************************************** Error codes handling(srcSize_wrong)
829  LLtype等于ip右移6位
830  OFtype等于ip右移4位按位与3
831  MLtype等于ip右移2位按位与3
832  ip自加
836  llhSize等于 : nb bytes read from src,
838  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:-***************************************** Error codes handling(corruption_detected)
840  ip加等于llhSize
843  ofhSize等于 : nb bytes read from src,
845  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:-***************************************** Error codes handling(corruption_detected)
847  ip加等于ofhSize
850  mlhSize等于 : nb bytes read from src,
852  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:-***************************************** Error codes handling(corruption_detected)
854  ip加等于mlhSize
858  返回:ip减istart
调用者
名称描述
ZSTD_decompressSequences
ZSTD_decompressSequencesLong