gelf_update_shdr - Man Page

copy a class-independent section header into a section descriptor

Synopsis

#include <gelf.h>

int gelf_update_shdr(Elf_Scn *scn, GElf_Shdr *src);

Description

gelf_update_shdr() copies the class-independent section header referenced by src into the section descriptor scn. The section header is translated as necessary to match the class ( ELFCLASS32 or ELFCLASS64) of the underlying ELF object.  If the underlying ELF object has class ELFCLASS32 then the struct members of src must fit into 32-bit field values.

Parameters

scn

Pointer to a section descriptor of type Elf_Scn.

src

Pointer to a GElf_Shdr structure containing the caller’s desired section header contents.

Return Value

On success, gelf_update_shdr() returns a non-zero value and marks scn with the ELF_F_DIRTY flag.  On failure, this function returns 0 and elf_errno is set. If scn or src are NULL, then 0 is returned without setting elf_errno.

See Also

gelf_getshdr(3), elf_getscn(3), elf_nextscn(3), libelf(3), elf(5)

Attributes

InterfaceAttributeValue
gelf_update_shdr()Thread safetyMT-Safe

Reporting Bugs

Report bugs to <elfutils-devel@sourceware.org> or https://sourceware.org/bugzilla/.

Referenced By

gelf_getshdr(3).

2025-09-23 Libelf Programmer's Manual