.TH ELF32_NEWEHDR 3 2024-08-14 "Libelf" "Libelf Programmer's Manual"

.SH NAME
elf32_newehdr, elf64_newehdr \- create a new ELF header for a 32-bit or
64-bit ELF object file

.SH SYNOPSIS
.nf
.B #include <libelf.h>

.BI "Elf32_Ehdr *elf32_newehdr(Elf *" elf ");"
.BI "Elf64_Ehdr *elf64_newehdr(Elf *" elf ");"

.SH DESCRIPTION
This function initializes a new ELF header and associates it with
.IR elf .
If
.I elf
already has an ELF header associated with it, no new header will be created
and the existing header will be returned.  An ELF header must be present
before calling
.B elf_newscn
or
.BR elf_newphdr .

.SH PARAMETERS
.TP
.I elf
ELF descriptor for which a new ELF header is to be created.

.SH RETURN VALUE
On success, return a pointer to the newly created ELF header.  If
.I elf
already has an ELF header associated with it, this pre-existing header is
returned and no new header is created. On failure, return NULL and set a
libelf error code.

.SH SEE ALSO
.BR elf_errno (3),
.BR libelf (3),
.BR elf (5)

.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbx lb lb
l l l.
Interface	Attribute	Value
T{
.na
.nh
.BR elf32_newehdr (),
.BR elf64_newehdr ()
T}	Thread safety	MT-Safe
.TE

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