ELF32_CHECKSUM(3)	   Libelf Programmer's Manual	       ELF32_CHECKSUM(3)

NAME
     elf32_checksum,  elf64_checksum  -	 compute  the  checksum	 for a 32-bit or
     64-bit ELF object file


SYNOPSIS
     #include <libelf.h>

     long int elf32_checksum(Elf *elf);
     long int elf64_checksum(Elf *elf);


DESCRIPTION
     Compute a checksum for the ELF object file referred to by elf.  The  check-
     sum  is computed from permanent parts of the ELF file and the result is re-
     peatable.	To be repeatable, strippable sections are not included	in  com-
     puting  the  checksum.  SHT_NOBITS sections are also not included when com-
     puting the checksum.  The checksum can be used as a value for DT_CHECKSUM.


PARAMETERS
     elf    The ELF object file for which the checksum is to be computed.


RETURN VALUE
     On success, return the computed checksum. If an error occurs, return -1 and
     set a libelf error code.  The checksum is always  calculated  as  a  4-byte
     value.  If	 long  int is larger than 4 bytes, then the checksum will be ex-
     tended by padding with zeros.


SEE ALSO
     elf_errno(3), libelf(3), elf(5)


ATTRIBUTES
     For an explanation of the terms used in this  section,  see  attributes(7).
     allbox; lbx lb lb l l l.  Interface Attribute Value T{ elf32_checksum(),
     elf64_checksum() T}   Thread safety  MT-Safe


REPORTING BUGS
     Report   bugs   to	  <elfutils-devel@sourceware.org>   or	 https://source-
     ware.org/bugzilla/.

Libelf				   2024-08-14		       ELF32_CHECKSUM(3)