Package net.fornwall.jelf

Class ElfDynamicSection

java.lang.Object

net.fornwall.jelf.ElfSection

net.fornwall.jelf.ElfDynamicSection

public class ElfDynamicSection
extends ElfSection

An ElfSection with information necessary for dynamic linking.

Given an ElfFile, use ElfFile.getDynamicSection() to obtain the dynamic section for it if one exists, which it only does if the ELF file is an object file participating in dynamic linking.

This dynamic linking section contains a list of ElfDynamicSection.ElfDynamicStructure:s.

 Name                     Value  d_un         Executable   Shared Object
 ----------------------------------------------------------------------
 DT_NULL                      0  ignored      mandatory    mandatory
 DT_NEEDED                    1  d_val        optional     optional
 DT_PLTRELSZ                  2  d_val        optional     optional
 DT_PLTGOT                    3  d_ptr        optional     optional
 DT_HASH                      4  d_ptr        mandatory    mandatory
 DT_STRTAB                    5  d_ptr        mandatory    mandatory
 DT_SYMTAB                    6  d_ptr        mandatory    mandatory
 DT_RELA                      7  d_ptr        mandatory    optional
 DT_RELASZ                    8  d_val        mandatory    optional
 DT_RELAENT                   9  d_val        mandatory    optional
 DT_STRSZ                    10  d_val        mandatory    mandatory
 DT_SYMENT                   11  d_val        mandatory    mandatory
 DT_INIT                     12  d_ptr        optional     optional
 DT_FINI                     13  d_ptr        optional     optional
 DT_SONAME                   14  d_val        ignored      optional
 DT_RPATH*                   15  d_val        optional     ignored
 DT_SYMBOLIC*                16  ignored      ignored      optional
 DT_REL                      17  d_ptr        mandatory    optional
 DT_RELSZ                    18  d_val        mandatory    optional
 DT_RELENT                   19  d_val        mandatory    optional
 DT_PLTREL                   20  d_val        optional     optional
 DT_DEBUG                    21  d_ptr        optional     ignored
 DT_TEXTREL*                 22  ignored      optional     optional
 DT_JMPREL                   23  d_ptr        optional     optional
 DT_BIND_NOW*                24  ignored      optional     optional
 DT_INIT_ARRAY               25  d_ptr        optional     optional
 DT_FINI_ARRAY               26  d_ptr        optional     optional
 DT_INIT_ARRAYSZ             27  d_val        optional     optional
 DT_FINI_ARRAYSZ             28  d_val        optional     optional
 DT_RUNPATH                  29  d_val        optional     optional
 DT_FLAGS                    30  d_val        optional     optional
 DT_ENCODING                 32  unspecified  unspecified  unspecified
 DT_PREINIT_ARRAY            32  d_ptr        optional     ignored
 DT_PREINIT_ARRAYSZ          33  d_val        optional     ignored
 DT_LOOS             0x6000000D  unspecified  unspecified  unspecified
 DT_HIOS             0x6ffff000  unspecified  unspecified  unspecified
 DT_LOPROC           0x70000000  unspecified  unspecified  unspecified
 DT_HIPROC           0x7fffffff  unspecified  unspecified  unspecified
 "*" Signifies an entry that is at level 2.
 

Read more about dynamic sections at Dynamic Section.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ElfDynamicSection.ElfDynamicStructure	An entry in the entries of a ElfDynamicSection.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DF_1_CONFALT
static final int	DF_1_DIRECT
static final int	DF_1_DISPRELDNE
static final int	DF_1_DISPRELPND
static final int	DF_1_EDITED
static final int	DF_1_ENDFILTEE
static final int	DF_1_GLOBAL	Set RTLD_GLOBAL for this object.
static final int	DF_1_GLOBAUDIT
static final int	DF_1_GROUP	Set RTLD_GROUP for this object.
static final int	DF_1_IGNMULDEF
static final int	DF_1_INITFIRST
static final int	DF_1_INTERPOSE
static final int	DF_1_LOADFLTR
static final int	DF_1_NODEFLIB
static final int	DF_1_NODELETE	Set RTLD_NODELETE for this object.
static final int	DF_1_NODIRECT
static final int	DF_1_NODUMP	Object cannot be dumped with dldump(3)
static final int	DF_1_NOHDR
static final int	DF_1_NOKSYMS
static final int	DF_1_NOOPEN	Object can not be used with dlopen(3)
static final int	DF_1_NORELOC
static final int	DF_1_NOW	Set RTLD_NOW for this object.
static final int	DF_1_ORIGIN
static final int	DF_1_PIE
static final int	DF_1_SINGLETON
static final int	DF_1_STUB
static final int	DF_1_SYMINTPOSE
static final int	DF_1_TRANS
static final int	DF_BIND_NOW
static final int	DF_ORIGIN
static final int	DF_SYMBOLIC
static final int	DF_TEXTREL
static final int	DT_BIND_NOW
static final int	DT_DEBUG
static final int	DT_FINI
static final int	DT_FINI_ARRAY
static final int	DT_FINI_ARRAYSZ
static final int	DT_FLAGS
static final int	DT_FLAGS_1
static final int	DT_GNU_HASH
static final int	DT_HASH
static final int	DT_INIT
static final int	DT_INIT_ARRAY
static final int	DT_INIT_ARRAYSZ
static final int	DT_JMPREL
static final int	DT_NEEDED	This element holds the string table offset of a null-terminated string, giving the name of a needed library.
static final int	DT_NULL	An entry with a DT_NULL tag marks the end of the _DYNAMIC array.
static final int	DT_PLTGOT
static final int	DT_PLTREL
static final int	DT_PLTRELSZ
static final int	DT_PREINIT_ARRAY
static final int	DT_REL
static final int	DT_RELA
static final int	DT_RELAENT
static final int	DT_RELASZ
static final int	DT_RELENT
static final int	DT_RELSZ
static final int	DT_RPATH
static final int	DT_RUNPATH
static final int	DT_SONAME
static final int	DT_STRSZ	The size in bytes of the DT_STRTAB string table.
static final int	DT_STRTAB	DT_STRTAB entry holds the address, not offset, of the dynamic string table.
long	dt_strtab_offset	For the DT_STRTAB.
int	dt_strtab_size	For the DT_STRSZ.
static final int	DT_SYMBOLIC
static final int	DT_SYMENT
static final int	DT_SYMTAB
static final int	DT_TEXTREL
static final int	DT_VERDEF
static final int	DT_VERDEFNUM
static final int	DT_VERNEEDED
static final int	DT_VERNEEDNUM
final List<ElfDynamicSection.ElfDynamicStructure>	entries

Fields inherited from class net.fornwall.jelf.ElfSection

header, parser

Constructor Summary

Constructors

Constructor	Description
ElfDynamicSection(net.fornwall.jelf.ElfParser parser, ElfSectionHeader header)

Method Summary

Modifier and Type	Method	Description
long	getFlags()
long	getFlags1()
List<String>	getNeededLibraries()
String	getRunPath()
String	toString()

Methods inherited from class net.fornwall.jelf.ElfSection

getData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

DT_NULL

public static final int DT_NULL

An entry with a DT_NULL tag marks the end of the _DYNAMIC array.

See Also:

• Constant Field Values

DT_NEEDED

public static final int DT_NEEDED

This element holds the string table offset of a null-terminated string, giving the name of a needed library. The offset is an index into the table recorded in the DT_STRTAB code.

See Shared Object Dependencies for more information about these names.

The dynamic array may contain multiple entries with this type.

These entries' relative order is significant, though their relation to entries of other types is not.

See Also:

• Constant Field Values

DT_PLTRELSZ

public static final int DT_PLTRELSZ

See Also:

• Constant Field Values

DT_PLTGOT

public static final int DT_PLTGOT

See Also:

• Constant Field Values

DT_HASH

public static final int DT_HASH

See Also:

• Constant Field Values

DT_STRTAB

public static final int DT_STRTAB

DT_STRTAB entry holds the address, not offset, of the dynamic string table.

See Also:

• Constant Field Values

DT_SYMTAB

public static final int DT_SYMTAB

See Also:

• Constant Field Values

DT_RELA

public static final int DT_RELA

See Also:

• Constant Field Values

DT_RELASZ

public static final int DT_RELASZ

See Also:

• Constant Field Values

DT_RELAENT

public static final int DT_RELAENT

See Also:

• Constant Field Values

DT_STRSZ

public static final int DT_STRSZ

The size in bytes of the DT_STRTAB string table.

See Also:

• Constant Field Values

DT_SYMENT

public static final int DT_SYMENT

See Also:

• Constant Field Values

DT_INIT

public static final int DT_INIT

See Also:

• Constant Field Values

DT_FINI

public static final int DT_FINI

See Also:

• Constant Field Values

DT_SONAME

public static final int DT_SONAME

See Also:

• Constant Field Values

DT_RPATH

public static final int DT_RPATH

See Also:

• Constant Field Values

DT_SYMBOLIC

public static final int DT_SYMBOLIC

See Also:

• Constant Field Values

DT_REL

public static final int DT_REL

See Also:

• Constant Field Values

DT_RELSZ

public static final int DT_RELSZ

See Also:

• Constant Field Values

DT_RELENT

public static final int DT_RELENT

See Also:

• Constant Field Values

DT_PLTREL

public static final int DT_PLTREL

See Also:

• Constant Field Values

DT_DEBUG

public static final int DT_DEBUG

See Also:

• Constant Field Values

DT_TEXTREL

public static final int DT_TEXTREL

See Also:

• Constant Field Values

DT_JMPREL

public static final int DT_JMPREL

See Also:

• Constant Field Values

DT_BIND_NOW

public static final int DT_BIND_NOW

See Also:

• Constant Field Values

DT_INIT_ARRAY

public static final int DT_INIT_ARRAY

See Also:

• Constant Field Values

DT_FINI_ARRAY

public static final int DT_FINI_ARRAY

See Also:

• Constant Field Values

DT_INIT_ARRAYSZ

public static final int DT_INIT_ARRAYSZ

See Also:

• Constant Field Values

DT_FINI_ARRAYSZ

public static final int DT_FINI_ARRAYSZ

See Also:

• Constant Field Values

DT_RUNPATH

public static final int DT_RUNPATH

See Also:

• Constant Field Values

DT_FLAGS

public static final int DT_FLAGS

See Also:

• Constant Field Values

DT_PREINIT_ARRAY

public static final int DT_PREINIT_ARRAY

See Also:

• Constant Field Values

DT_GNU_HASH

public static final int DT_GNU_HASH

See Also:

• Constant Field Values

DT_FLAGS_1

public static final int DT_FLAGS_1

See Also:

• Constant Field Values

DT_VERDEF

public static final int DT_VERDEF

See Also:

• Constant Field Values

DT_VERDEFNUM

public static final int DT_VERDEFNUM

See Also:

• Constant Field Values

DT_VERNEEDED

public static final int DT_VERNEEDED

See Also:

• Constant Field Values

DT_VERNEEDNUM

public static final int DT_VERNEEDNUM

See Also:

• Constant Field Values

DF_ORIGIN

public static final int DF_ORIGIN

See Also:

• Constant Field Values

DF_SYMBOLIC

public static final int DF_SYMBOLIC

See Also:

• Constant Field Values

DF_TEXTREL

public static final int DF_TEXTREL

See Also:

• Constant Field Values

DF_BIND_NOW

public static final int DF_BIND_NOW

See Also:

• Constant Field Values

DF_1_NOW

public static final int DF_1_NOW

Set RTLD_NOW for this object.

See Also:

• Constant Field Values

DF_1_GLOBAL

public static final int DF_1_GLOBAL

Set RTLD_GLOBAL for this object.

See Also:

• Constant Field Values

DF_1_GROUP

public static final int DF_1_GROUP

Set RTLD_GROUP for this object.

See Also:

• Constant Field Values

DF_1_NODELETE

public static final int DF_1_NODELETE

Set RTLD_NODELETE for this object.

See Also:

• Constant Field Values

DF_1_LOADFLTR

public static final int DF_1_LOADFLTR

See Also:

• Constant Field Values

DF_1_INITFIRST

public static final int DF_1_INITFIRST

See Also:

• Constant Field Values

DF_1_NOOPEN

public static final int DF_1_NOOPEN

Object can not be used with dlopen(3)

See Also:

• Constant Field Values

DF_1_ORIGIN

public static final int DF_1_ORIGIN

See Also:

• Constant Field Values

DF_1_DIRECT

public static final int DF_1_DIRECT

See Also:

• Constant Field Values

DF_1_TRANS

public static final int DF_1_TRANS

See Also:

• Constant Field Values

DF_1_INTERPOSE

public static final int DF_1_INTERPOSE

See Also:

• Constant Field Values

DF_1_NODEFLIB

public static final int DF_1_NODEFLIB

See Also:

• Constant Field Values

DF_1_NODUMP

public static final int DF_1_NODUMP

Object cannot be dumped with dldump(3)

See Also:

• Constant Field Values

DF_1_CONFALT

public static final int DF_1_CONFALT

See Also:

• Constant Field Values

DF_1_ENDFILTEE

public static final int DF_1_ENDFILTEE

See Also:

• Constant Field Values

DF_1_DISPRELDNE

public static final int DF_1_DISPRELDNE

See Also:

• Constant Field Values

DF_1_DISPRELPND

public static final int DF_1_DISPRELPND

See Also:

• Constant Field Values

DF_1_NODIRECT

public static final int DF_1_NODIRECT

See Also:

• Constant Field Values

DF_1_IGNMULDEF

public static final int DF_1_IGNMULDEF

See Also:

• Constant Field Values

DF_1_NOKSYMS

public static final int DF_1_NOKSYMS

See Also:

• Constant Field Values

DF_1_NOHDR

public static final int DF_1_NOHDR

See Also:

• Constant Field Values

DF_1_EDITED

public static final int DF_1_EDITED

See Also:

• Constant Field Values

DF_1_NORELOC

public static final int DF_1_NORELOC

See Also:

• Constant Field Values

DF_1_SYMINTPOSE

public static final int DF_1_SYMINTPOSE

See Also:

• Constant Field Values

DF_1_GLOBAUDIT

public static final int DF_1_GLOBAUDIT

See Also:

• Constant Field Values

DF_1_SINGLETON

public static final int DF_1_SINGLETON

See Also:

• Constant Field Values

DF_1_STUB

public static final int DF_1_STUB

See Also:

• Constant Field Values

DF_1_PIE

public static final int DF_1_PIE

See Also:

• Constant Field Values

dt_strtab_offset

public long dt_strtab_offset

For the DT_STRTAB. Mandatory.

dt_strtab_size

public int dt_strtab_size

For the DT_STRSZ. Mandatory.

entries

public final List<ElfDynamicSection.ElfDynamicStructure> entries

Constructor Details

ElfDynamicSection

public ElfDynamicSection(net.fornwall.jelf.ElfParser parser,
 ElfSectionHeader header)

Method Details

getNeededLibraries

public List<String> getNeededLibraries()
                                throws ElfException

Throws:

ElfException

getRunPath

public String getRunPath()

getFlags

public long getFlags()

getFlags1

public long getFlags1()

toString

public String toString()

Overrides:

toString in class Object