LIEF::ELF::GnuHash Class Reference

Class which provides a view over the GNU Hash implementation. Most of the fields are read-only since the values are re-computed by the LIEF::ELF::Builder. More...

#include <GnuHash.hpp>

Inheritance diagram for LIEF::ELF::GnuHash:

Collaboration diagram for LIEF::ELF::GnuHash:

Public Member Functions
	GnuHash ()=default
	GnuHash (uint32_t symbol_idx, uint32_t shift2, std::vector< uint64_t > bloom_filters, std::vector< uint32_t > buckets, std::vector< uint32_t > hash_values={})
GnuHash &	operator= (const GnuHash &copy)=default
	GnuHash (const GnuHash &copy)=default
	GnuHash (GnuHash &&)=default
GnuHash &	operator= (GnuHash &&)=default
	~GnuHash () override=default
uint32_t	nb_buckets () const
	Return the number of buckets.
uint32_t	symbol_index () const
	Index of the first symbol in the dynamic symbols table which accessible with the hash table.
uint32_t	shift2 () const
	Shift count used in the bloom filter.
uint32_t	maskwords () const
	Number of bloom filters used. It must be a power of 2.
const std::vector< uint64_t > &	bloom_filters () const
	Bloom filters.
const std::vector< uint32_t > &	buckets () const
	Hash buckets.
const std::vector< uint32_t > &	hash_values () const
	Hash values.
bool	check_bloom_filter (uint32_t hash) const
	Check if the given hash passes the bloom filter.
bool	check_bucket (uint32_t hash) const
	Check if the given hash passes the bucket filter.
bool	check (const std::string &symbol_name) const
	Check if the symbol probably exists. If the returned value is false you can assume at 100% that the symbol with the given name doesn't exist. If true, you can't do any assumption.
bool	check (uint32_t hash) const
	Check if the symbol associated with the given hash probably exists. If the returned value is false you can assume at 100% that the symbol doesn't exists. If true you can't do any assumption.
void	accept (Visitor &visitor) const override
uint64_t	original_size () const
Public Member Functions inherited from LIEF::Object
	Object ()
	Object (const Object &other)
Object &	operator= (const Object &other)
	Object (Object &&other) noexcept=default
Object &	operator= (Object &&other) noexcept=default
template<class T>
output_t< T >	as ()
template<class T>
output_const_t< T >	as () const
virtual bool	operator== (const Object &other) const
virtual bool	operator!= (const Object &other) const
virtual	~Object ()

Static Public Member Functions
template<class ELF_T>
static std::unique_ptr< GnuHash >	parse (SpanStream &strm, uint64_t dynsymcount)
template<class ELF_T>
static result< uint32_t >	nb_symbols (SpanStream &strm)

Additional Inherited Members
Public Types inherited from LIEF::Object
template<class T>
using	output_t = add_pointer_t<decay_t<T>>
template<class T>
using	output_const_t = add_pointer_t<add_const_t<decay_t<T>>>

Detailed Description

Class which provides a view over the GNU Hash implementation. Most of the fields are read-only since the values are re-computed by the LIEF::ELF::Builder.

Constructor & Destructor Documentation

GnuHash() [1/4]

LIEF::ELF::GnuHash::GnuHash ( )

default

Referenced by GnuHash(), GnuHash(), operator<<, operator=(), and operator=().

GnuHash() [2/4]

LIEF::ELF::GnuHash::GnuHash ( uint32_t symbol_idx, uint32_t shift2, std::vector< uint64_t > bloom_filters, std::vector< uint32_t > buckets, std::vector< uint32_t > hash_values = {} )

inline

References bloom_filters(), buckets(), hash_values(), and shift2().

GnuHash() [3/4]

LIEF::ELF::GnuHash::GnuHash ( const GnuHash & copy )

default

References GnuHash().

GnuHash() [4/4]

LIEF::ELF::GnuHash::GnuHash ( GnuHash && )

default

References GnuHash().

~GnuHash()

LIEF::ELF::GnuHash::~GnuHash ( )

overridedefault

Member Function Documentation

accept()

void LIEF::ELF::GnuHash::accept ( Visitor & visitor ) const

overridevirtual

Implements LIEF::Object.

bloom_filters()

const std::vector< uint64_t > & LIEF::ELF::GnuHash::bloom_filters ( ) const

inline

Bloom filters.

Referenced by GnuHash().

buckets()

const std::vector< uint32_t > & LIEF::ELF::GnuHash::buckets ( ) const

inline

Hash buckets.

Referenced by GnuHash().

check() [1/2]

bool LIEF::ELF::GnuHash::check

(

const std::string &

symbol_name

)

const

Check if the symbol probably exists. If the returned value is false you can assume at 100% that the symbol with the given name doesn't exist. If true, you can't do any assumption.

check() [2/2]

bool LIEF::ELF::GnuHash::check

(

uint32_t

hash

)

const

Check if the symbol associated with the given hash probably exists. If the returned value is false you can assume at 100% that the symbol doesn't exists. If true you can't do any assumption.

References LIEF::hash().

check_bloom_filter()

bool LIEF::ELF::GnuHash::check_bloom_filter

(

uint32_t

hash

)

const

Check if the given hash passes the bloom filter.

References LIEF::hash().

check_bucket()

bool LIEF::ELF::GnuHash::check_bucket ( uint32_t hash ) const

inline

Check if the given hash passes the bucket filter.

References LIEF::hash(), and nb_buckets().

hash_values()

const std::vector< uint32_t > & LIEF::ELF::GnuHash::hash_values ( ) const

inline

Hash values.

Referenced by GnuHash().

maskwords()

uint32_t LIEF::ELF::GnuHash::maskwords ( ) const

inline

Number of bloom filters used. It must be a power of 2.

nb_buckets()

uint32_t LIEF::ELF::GnuHash::nb_buckets ( ) const

inline

Return the number of buckets.

See also

GnuHash::buckets

Referenced by check_bucket().

nb_symbols()

template<class ELF_T>

result< uint32_t > LIEF::ELF::GnuHash::nb_symbols ( SpanStream & strm )

static

References LIEF_LOCAL.

operator=() [1/2]

GnuHash & LIEF::ELF::GnuHash::operator= ( const GnuHash & copy )

default

References GnuHash().

operator=() [2/2]

GnuHash & LIEF::ELF::GnuHash::operator= ( GnuHash && )

default

References GnuHash().

original_size()

uint64_t LIEF::ELF::GnuHash::original_size ( ) const

inline

References LIEF_LOCAL.

parse()

template<class ELF_T>

std::unique_ptr< GnuHash > LIEF::ELF::GnuHash::parse ( SpanStream & strm, uint64_t dynsymcount )

static

References LIEF_LOCAL.

shift2()

uint32_t LIEF::ELF::GnuHash::shift2 ( ) const

inline

Shift count used in the bloom filter.

Referenced by GnuHash().

symbol_index()

uint32_t LIEF::ELF::GnuHash::symbol_index ( ) const

inline

Index of the first symbol in the dynamic symbols table which accessible with the hash table.

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

• GnuHash.hpp