Проект OpenNet: MAN gelf_update_rel (3) Библиотечные вызовы (FreeBSD и Linux)

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gelf_update_rel (3)

>> gelf_update_rel (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME

gelf_getrel

 
gelf_update_rel

 - read and update ELF relocation entries

LIBRARY

Lb libelf

SYNOPSIS

#include <gelf.h>
GElf_Rel * gelf_getrel (Elf_Data *data int ndx GElf_Rel *rel);
int gelf_update_rel (Elf_Data *data int ndx GElf_Rel *rel);

DESCRIPTION

These convenience functions are used to retrieve and update class-dependent Vt Elf32_Rel or Vt Elf64_Rel structures in an ELF object.

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

Function gelf_getrel ();
retrieves the class-dependent entry at index ndx in data buffer data and copies it to the destination pointed to by argument rel after translation to class-independent form.

Function gelf_update_rel ();
converts the class-independent entry pointed to by argument rel to class-dependent form, and writes it to the entry at index ndx in the data buffer described by argument data Function gelf_update_rel ();
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_getrel ();
returns the value of argument rel if successful, or NULL in case of an error. Function gelf_update_rel ();
returns a non-zero value if successful, or zero in case of an error.

ERRORS

These functions may fail with the following errors:

Bq Er ELF_E_ARGUMENT: Arguments data or rel were NULL.
Bq Er ELF_E_ARGUMENT: Argument ndx was less than zero or larger than the number of entries in the data descriptor.
Bq Er ELF_E_ARGUMENT: Data descriptor data was not associated with a section of type SHT_REL
Bq Er ELF_E_RANGE: A value was not representable in the target type.

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Created 1996-2024 by Maxim Chirkov
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