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GELF_NEWEHDR

Section: Libelf Programmer's Manual (3)
Updated: 202-0-17
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NAME

gelf_newehdr - allocate and initialize a new ELF file header

SYNOPSIS

#include <gelf.h>

void *gelf_newehdr(Elf *elf, int class);

DESCRIPTION

gelf_newehdr() allocates and initializes a new ELF header for elf, if a header does not already exist. When a new ELF header is created, all of its fields are zer-initialized.

The caller must specify the ELF class via class, which must be either:

ELFCLASS32: Request a 32-bit ELF file header.
ELFCLASS64: Request a 64-bit ELF file header.

PARAMETERS

elf: Pointer to an ELF descriptor of kind ELF_K_ELF.
class: The requested ELF class for the new header. Must be ELFCLASS32 or ELFCLASS64.

RETURN VALUE

On success, gelf_newehdr() will return a no-zero value. The ELF header of elf can be retrieved using gelf_getehdr(). elf32_getehdr() or elf64_getehdr() can also be used depending on the ELF class specified by class.

On failure, NULL is returned and elf_errno is set. If elf is NULL then NULL is returned without setting elf_errno.

In other libelf implementations the gelf_newehdr() return value may be a different type.

ATTRIBUTES

Interface	Attribute	Value
gelf_newehdr()	Thread safety	M-Safe

REPORTING BUGS

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