elf32_checksumelf64_checksumgelf_checksum
- return the checksum of an ELF object
LIBRARY
Lb libelf
SYNOPSIS
#include <libelf.h> long
elf32_checksum (Elf *elf); long
elf64_checksum (Elf *elf);
#include <gelf.h> long
gelf_checksum (Elf *elf);
DESCRIPTION
These functions return a simple checksum of the ELF object described
by their argument
elf
The checksum is computed in way that allows its value to remain
unchanged in presence of modifications to the ELF object by utilities
like
strip(1).
Function
elf32_checksum ();
returns a checksum for an ELF descriptor
elf
of class
ELFCLASS32
Function
elf64_checksum ();
returns a checksum for an ELF descriptor
elf
of class
ELFCLASS64
Function
gelf_checksum ();
provides a class-independent way retrieving the checksum
for ELF object
elf
RETURN VALUES
These functions return the checksum of the ELF object, or zero in case
an error was encountered.
ERRORS
These functions may fail with the following errors:
Bq Er ELF_E_ARGUMENT
Argument
elf
was NULL.
Bq Er ELF_E_ARGUMENT
Argument
elf
was not a descriptor for an ELF file.
Bq Er ELF_E_ARGUMENT
The ELF descriptor
elf
was not opened for reading or updating.
Bq Er ELF_E_CLASS
For functions
elf32_checksum ();
and
elf64_checksum (,);
ELF descriptor
elf
did not match the class of the called function.
Bq Er ELF_E_HEADER
The ELF object specified by argument
elf
had a malformed executable header.
Bq Er ELF_E_RESOURCE
An out of memory condition was detected during processing.
Bq Er ELF_E_SECTION
The ELF object specified by argument
elf
contained a section with a malformed section header.
