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Man Pages


Manual Reference Pages  -  GELF_UPDATE_RELA (3)

NAME

gelf_getrela, gelf_update_rela - read and update ELF relocation entries with addends

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also

LIBRARY


.Lb libelf

SYNOPSIS


.In gelf.h GElf_Rela * gelf_getrela Elf_Data *data int ndx GElf_Rela *rela int gelf_update_rela Elf_Data *data int ndx GElf_Rela *rela

DESCRIPTION

These convenience functions are used to retrieve and update class-dependent
.Vt Elf32_Rela or
.Vt Elf64_Rela structures in an ELF object.

Argument data is an
.Vt Elf_Data descriptor associated with a section of type SHT_RELA. Argument ndx is the index of the entry being retrieved or updated. The class-independent
.Vt GElf_Rela structure is described in gelf(3).

Function gelf_getrela retrieves the class-dependent entry at index ndx in data buffer data and copies it to the destination pointed to by argument rela after translation to class-independent form.

Function gelf_update_rela converts the class-independent entry pointed to by argument rela to class-dependent form, and writes it to the entry at index ndx in the data buffer described by argument data. Function gelf_update_rela signals an error if any of the values in the class-independent representation exceeds the representable limits of the target type.

RETURN VALUES

Function gelf_getrela returns the value of argument rela if successful, or NULL in case of an error. Function gelf_update_rela returns a non-zero value if successful, or zero in case of an error.

ERRORS

These functions may fail with the following errors:
[ELF_E_ARGUMENT] Arguments data or rela were NULL.
[ELF_E_ARGUMENT] Argument ndx was less than zero or larger than the number of entries in the data descriptor.
[ELF_E_ARGUMENT] Data descriptor data was not associated with a section of type SHT_RELA.
[ELF_E_RANGE] A value was not representable in the target type.

SEE ALSO

elf(3), elf_getdata(3), elf_getscn(3), gelf(3)
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