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FreeBSD 11.0 - man page for elf_getident (freebsd section 3)

ELF_GETIDENT(3) 					   BSD Library Functions Manual 					   ELF_GETIDENT(3)

NAME
elf_getident -- return the initial bytes of a file
LIBRARY
ELF Access Library (libelf, -lelf)
SYNOPSIS
#include <libelf.h> char * elf_getident(Elf *elf, size_t *sz);
DESCRIPTION
Function elf_getident() returns a pointer to the initial bytes of the file for descriptor elf. If argument sz is non-null, the size of the identification area returned is written to the location pointed to by sz. This location is set to zero on errors.
RETURN VALUES
Function elf_getident() will return a non-NULL pointer to the initial bytes of the file if successful, or NULL if an error condition is detected.
ERRORS
Function elf_getident() can fail with the following errors: [ELF_E_ARGUMENT] A NULL value was passed in for argument elf. [ELF_E_SEQUENCE] ELF descriptor elf was opened for writing and function elf_getident() was called before a call to elf_update(3).
SEE ALSO
elf(3), elf32_getehdr(3), elf64_getehdr(3), elf_getarhdr(3), elf_getbase(3), elf_getflags(3), elf_kind(3), elf_rawfile(3), elf_update(3), gelf(3), gelf_getclass(3), gelf_getehdr(3)
BSD
July 3, 2006 BSD