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



NAME
       elf_hash, elf_gnu_hash - Compute the standard ELF hash or GNU hash of a
       string.


SYNOPSIS
       #include <libelf.h>

       unsigned long int elf_hash(const char *string);
       unsigned long int elf_gnu_hash(const char *string);


DESCRIPTION
       The elf_hash function computes the standard ELF hash value for a null-
       terminated string.  The hash values are typically used in ELF object
       files for symbol table hashing.  The hash function is used in SHT_HASH
       sections as it avoids generating architecture-dependent values and is
       suitable for use across architectures.

       The elf_gnu_hash function computes the GNU-style hash value of a null-
       terminated string, used in the SHT_GNU_HASH section.


PARAMETERS
       string NULL-terminated string to be hashed.


RETURN VALUE
       These functions return a hash value for string.  Only the lower 32 bits
       of the return value are used.


SEE ALSO
       libelf(3), elf(5)


ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |elf_hash (), elf_gnu_hash ()                | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+

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


HISTORY
       elf_gnu_hash first appeared in elfutils 0.122.  This function is a
       elfutils libelf extension and may not be available in other libelf
       implementations.

Libelf                            2025-03-31                       ELF_HASH(3)