elf32_checksum,
elf64_checksum,
gelf_checksum —
return the checksum of an ELF object
ELF Access Library (libelf, -lelf)
#include
<libelf.h>
long
elf32_checksum(
Elf
*elf);
long
elf64_checksum(
Elf
*elf);
#include
<gelf.h>
long
gelf_checksum(
Elf
*elf);
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.
These functions return the checksum of the ELF object, or zero in case an error
was encountered.
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.
-
-
- []
- 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.
strip(1),
elf(3),
gelf(3)