NAME
elf32_checksum,
elf64_checksum,
gelf_checksum —
return the checksum
of an ELF object
LIBRARY
ELF Access Library (libelf, -lelf)
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:
-
-
- [
ELF_E_ARGUMENT
]
- Argument elf was NULL.
-
-
- [
ELF_E_ARGUMENT
]
- Argument elf was not a descriptor for
an ELF file.
-
-
- [
ELF_E_ARGUMENT
]
- The ELF descriptor elf was not opened
for reading or updating.
-
-
- [
ELF_E_CLASS
]
- For functions elf32_checksum() and
elf64_checksum(), ELF descriptor
elf did not match the class of the called
function.
-
-
- [
ELF_E_HEADER
]
- The ELF object specified by argument
elf had a malformed executable header.
-
-
- [
ELF_E_RESOURCE
]
- An out of memory condition was detected during
processing.
-
-
- [
ELF_E_SECTION
]
- The ELF object specified by argument
elf contained a section with a malformed section
header.
-
-
- [
ELF_E_VERSION
]
- The ELF object was of an unsupported version.
SEE ALSO
strip(1),
elf(3),
gelf(3)