gelf_update_rel3

Usage

#include <gelf.h>
int gelf_update_rel (Elf_Data *data, int ndx, GElf_Rel  *src);
int gelf_update_rela(Elf_Data *data, int ndx, GElf_Rela *src);

Overview

The gelf_update_rel() and gelf_update_rela() functions copy a class-independent REL or RELA relocation entry from *src into the SHT_REL or SHT_RELA section associated with data at entry index ndx.

Parameters

data

Elf_Data for a relocation section. The section must have sh_type SHT_REL for gelf_update_rel() or SHT_RELA for gelf_update_rela().

ndx

Zero-based index of the relocation entry within data.

src

Pointer to the caller-provided source entry: GElf_Rel for gelf_update_rel() and GElf_Rela for gelf_update_rela(). src must not be NULL.

For ELFCLASS32 binaries, r_offset should fit in unsigned 32 bits. r_addend should fit in signed 32 bits. The GELF_R_SYM component of r_info should fit in 24 bits and the GELF_R_TYPE component should fit in 8 bits.

Return value

On success, gelf_update_rel() and gelf_update_rela() copy src into data, flag the corresponding section with ELF_F_DIRTY and return a non-zero value. On failure, these functions return 0 and set elf_errno. If src is NULL, then 0 is returned without setting elf_errno.

Attributes