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GELF_UPDATE_EHDR(3) FreeBSD Library Functions Manual GELF_UPDATE_EHDR(3)
NAME
gelf_update_ehdr, gelf_update_phdr, gelf_update_shdr - update underlying
ELF data structures
LIBRARY
ELF Access Library (libelf, -lelf)
SYNOPSIS
#include <gelf.h>
int
gelf_update_ehdr(Elf *elf, GElf_Ehdr *ehdr);
int
gelf_update_phdr(Elf *elf, int ndx, GElf_Phdr *phdr);
int
gelf_update_shdr(Elf_Scn *scn, GElf_Shdr *shdr);
DESCRIPTION
These functions are used to update ELF data structures on the underlying
ELF descriptor. Class-dependent data structures in the underlying ELF
descriptor are updated using the data in the class-independent GElf
descriptors and the underlying ELF data structures are marked "dirty".
The conversion process signals an error if the values being copied to the
target ELF data structure would exceed representation limits. GElf
descriptors are described in gelf(3).
Function gelf_update_ehdr() updates the ELF Executable Header with the
values in the class-independent executable header ehdr.
Function gelf_update_phdr() updates the ELF Program Header structure at
index ndx with the values in the class-independent program header phdr.
Function gelf_update_shdr() updates the ELF Section Header structure
associated with section descriptor scn with the values in argument shdr.
RETURN VALUES
These functions return a non-zero integer on success, or zero in case of
an error.
ERRORS
These functions may fail with the following errors:
[ELF_E_ARGUMENT] Arguments elf, ehdr, phdr, scn, or shdr were NULL.
[ELF_E_ARGUMENT] Argument elf was not a descriptor for an ELF object.
[ELF_E_ARGUMENT] Argument elf had an unsupported ELF class.
[ELF_E_ARGUMENT] Argument ndx exceeded the number of entries in the
program header table.
[ELF_E_ARGUMENT] Section descriptor scn was not associated with an ELF
descriptor.
[ELF_E_MODE] ELF descriptor elf was not opened for writing or
FreeBSD 14.0-RELEASE-p6 August 27, 2006 FreeBSD 14.0-RELEASE-p6