libzypp  17.14.0
zypp::media::MediaBlockList Class Reference

#include <MediaBlockList.h>

Public Member Functions

 MediaBlockList (off_t filesize=off_t(-1))
 
bool haveBlocks () const
 do we have a blocklist describing the file? set to true when addBlock() is called More...
 
size_t addBlock (off_t off, size_t size)
 add a block with offset off and size size to the block list. More...
 
MediaBlock getBlock (size_t blkno) const
 return the offset/size of a block with number blkno More...
 
size_t numBlocks () const
 return the number of blocks in the blocklist More...
 
void setFilesize (off_t newfilesize=off_t(-1))
 set / return the size of the whole file More...
 
off_t getFilesize () const
 
bool haveFilesize () const
 
void setFileChecksum (std::string ctype, int cl, unsigned char *c)
 set / verify the checksum over the whole file More...
 
bool createFileDigest (Digest &digest) const
 
bool verifyFileDigest (Digest &digest) const
 
bool haveFileChecksum () const
 
void setChecksum (size_t blkno, std::string cstype, int csl, unsigned char *cs, size_t cspad=0)
 set / verify the (strong) checksum over a single block More...
 
bool checkChecksum (size_t blkno, const unsigned char *buf, size_t bufl) const
 
bool createDigest (Digest &digest) const
 
bool verifyDigest (size_t blkno, Digest &digest) const
 
bool haveChecksum (size_t blkno) const
 
void setRsum (size_t blkno, int rsl, unsigned int rs, size_t rspad=0)
 set / verify the (weak) rolling checksum over a single block More...
 
bool checkRsum (size_t blkno, const unsigned char *buf, size_t bufl) const
 
unsigned int updateRsum (unsigned int rs, const char *bytes, size_t len) const
 
bool verifyRsum (size_t blkno, unsigned int rs) const
 
bool haveRsum (size_t blkno) const
 
void reuseBlocks (FILE *wfp, std::string filename)
 scan a file for blocks from our blocklist. More...
 
std::string asString () const
 return block list as string More...
 

Private Member Functions

void writeBlock (size_t blkno, FILE *fp, const unsigned char *buf, size_t bufl, size_t start, std::vector< bool > &found) const
 
bool checkChecksumRotated (size_t blkno, const unsigned char *buf, size_t bufl, size_t start) const
 

Private Attributes

off_t filesize
 
std::string fsumtype
 
std::vector< unsigned char > fsum
 
bool haveblocks
 
std::vector< MediaBlockblocks
 
std::string chksumtype
 
int chksumlen
 
size_t chksumpad
 
std::vector< unsigned char > chksums
 
std::string rsumtype
 
int rsumlen
 
size_t rsumpad
 
std::vector< unsigned int > rsums
 

Detailed Description

Definition at line 35 of file MediaBlockList.h.

Constructor & Destructor Documentation

◆ MediaBlockList()

zypp::media::MediaBlockList::MediaBlockList ( off_t  filesize = off_t(-1))

Definition at line 32 of file MediaBlockList.cc.

Member Function Documentation

◆ haveBlocks()

bool zypp::media::MediaBlockList::haveBlocks ( ) const
inline

do we have a blocklist describing the file? set to true when addBlock() is called

Definition at line 43 of file MediaBlockList.h.

◆ addBlock()

size_t zypp::media::MediaBlockList::addBlock ( off_t  off,
size_t  size 
)

add a block with offset off and size size to the block list.

Note that blocks must be ordered and must not overlap. returns the block number.

Definition at line 43 of file MediaBlockList.cc.

◆ getBlock()

MediaBlock zypp::media::MediaBlockList::getBlock ( size_t  blkno) const
inline

return the offset/size of a block with number blkno

Definition at line 56 of file MediaBlockList.h.

◆ numBlocks()

size_t zypp::media::MediaBlockList::numBlocks ( ) const
inline

return the number of blocks in the blocklist

Definition at line 62 of file MediaBlockList.h.

◆ setFilesize()

void zypp::media::MediaBlockList::setFilesize ( off_t  newfilesize = off_t(-1))
inline

set / return the size of the whole file

Definition at line 69 of file MediaBlockList.h.

◆ getFilesize()

off_t zypp::media::MediaBlockList::getFilesize ( ) const
inline

Definition at line 72 of file MediaBlockList.h.

◆ haveFilesize()

bool zypp::media::MediaBlockList::haveFilesize ( ) const
inline

Definition at line 75 of file MediaBlockList.h.

◆ setFileChecksum()

void zypp::media::MediaBlockList::setFileChecksum ( std::string  ctype,
int  cl,
unsigned char *  c 
)

set / verify the checksum over the whole file

Definition at line 51 of file MediaBlockList.cc.

◆ createFileDigest()

bool zypp::media::MediaBlockList::createFileDigest ( Digest digest) const

Definition at line 61 of file MediaBlockList.cc.

◆ verifyFileDigest()

bool zypp::media::MediaBlockList::verifyFileDigest ( Digest digest) const

Definition at line 67 of file MediaBlockList.cc.

◆ haveFileChecksum()

bool zypp::media::MediaBlockList::haveFileChecksum ( ) const
inline

Definition at line 85 of file MediaBlockList.h.

◆ setChecksum()

void zypp::media::MediaBlockList::setChecksum ( size_t  blkno,
std::string  cstype,
int  csl,
unsigned char *  cs,
size_t  cspad = 0 
)

set / verify the (strong) checksum over a single block

Definition at line 78 of file MediaBlockList.cc.

◆ checkChecksum()

bool zypp::media::MediaBlockList::checkChecksum ( size_t  blkno,
const unsigned char *  buf,
size_t  bufl 
) const

Definition at line 196 of file MediaBlockList.cc.

◆ createDigest()

bool zypp::media::MediaBlockList::createDigest ( Digest digest) const

Definition at line 114 of file MediaBlockList.cc.

◆ verifyDigest()

bool zypp::media::MediaBlockList::verifyDigest ( size_t  blkno,
Digest digest 
) const

Definition at line 120 of file MediaBlockList.cc.

◆ haveChecksum()

bool zypp::media::MediaBlockList::haveChecksum ( size_t  blkno) const
inline

Definition at line 96 of file MediaBlockList.h.

◆ setRsum()

void zypp::media::MediaBlockList::setRsum ( size_t  blkno,
int  rsl,
unsigned int  rs,
size_t  rspad = 0 
)

set / verify the (weak) rolling checksum over a single block

Definition at line 97 of file MediaBlockList.cc.

◆ checkRsum()

bool zypp::media::MediaBlockList::checkRsum ( size_t  blkno,
const unsigned char *  buf,
size_t  bufl 
) const

Definition at line 187 of file MediaBlockList.cc.

◆ updateRsum()

unsigned int zypp::media::MediaBlockList::updateRsum ( unsigned int  rs,
const char *  bytes,
size_t  len 
) const

Definition at line 140 of file MediaBlockList.cc.

◆ verifyRsum()

bool zypp::media::MediaBlockList::verifyRsum ( size_t  blkno,
unsigned int  rs 
) const

Definition at line 157 of file MediaBlockList.cc.

◆ haveRsum()

bool zypp::media::MediaBlockList::haveRsum ( size_t  blkno) const
inline

Definition at line 107 of file MediaBlockList.h.

◆ reuseBlocks()

void zypp::media::MediaBlockList::reuseBlocks ( FILE *  wfp,
std::string  filename 
)

scan a file for blocks from our blocklist.

if we find a suitable block, it is removed from the list

Definition at line 275 of file MediaBlockList.cc.

◆ asString()

std::string zypp::media::MediaBlockList::asString ( ) const

return block list as string

Definition at line 488 of file MediaBlockList.cc.

◆ writeBlock()

void zypp::media::MediaBlockList::writeBlock ( size_t  blkno,
FILE *  fp,
const unsigned char *  buf,
size_t  bufl,
size_t  start,
std::vector< bool > &  found 
) const
private

Definition at line 228 of file MediaBlockList.cc.

◆ checkChecksumRotated()

bool zypp::media::MediaBlockList::checkChecksumRotated ( size_t  blkno,
const unsigned char *  buf,
size_t  bufl,
size_t  start 
) const
private

Definition at line 209 of file MediaBlockList.cc.

Member Data Documentation

◆ filesize

off_t zypp::media::MediaBlockList::filesize
private

Definition at line 126 of file MediaBlockList.h.

◆ fsumtype

std::string zypp::media::MediaBlockList::fsumtype
private

Definition at line 127 of file MediaBlockList.h.

◆ fsum

std::vector<unsigned char> zypp::media::MediaBlockList::fsum
private

Definition at line 128 of file MediaBlockList.h.

◆ haveblocks

bool zypp::media::MediaBlockList::haveblocks
private

Definition at line 130 of file MediaBlockList.h.

◆ blocks

std::vector<MediaBlock> zypp::media::MediaBlockList::blocks
private

Definition at line 131 of file MediaBlockList.h.

◆ chksumtype

std::string zypp::media::MediaBlockList::chksumtype
private

Definition at line 133 of file MediaBlockList.h.

◆ chksumlen

int zypp::media::MediaBlockList::chksumlen
private

Definition at line 134 of file MediaBlockList.h.

◆ chksumpad

size_t zypp::media::MediaBlockList::chksumpad
private

Definition at line 135 of file MediaBlockList.h.

◆ chksums

std::vector<unsigned char> zypp::media::MediaBlockList::chksums
private

Definition at line 136 of file MediaBlockList.h.

◆ rsumtype

std::string zypp::media::MediaBlockList::rsumtype
private

Definition at line 138 of file MediaBlockList.h.

◆ rsumlen

int zypp::media::MediaBlockList::rsumlen
private

Definition at line 139 of file MediaBlockList.h.

◆ rsumpad

size_t zypp::media::MediaBlockList::rsumpad
private

Definition at line 140 of file MediaBlockList.h.

◆ rsums

std::vector<unsigned int> zypp::media::MediaBlockList::rsums
private

Definition at line 141 of file MediaBlockList.h.


The documentation for this class was generated from the following files: