GELF_GETCLASS(3)

📦
version 0.197 · 2 versions
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✨ GELF_GETCLASS ✨

okay bestie, so you know how every ELF file out there is either living that 32-bit life or that 64-bit life? yeah. this little function from the Libelf Programmer's Manual tells you which one you're looking at. it's giving ✨vibe check for binaries✨ and honestly? iconic. 🎀

🌸 NAME 🌸

gelf_getclass — bestie, this returns the ELF class (32-bit or 64-bit) for an object 💖

🦋 SYNOPSIS 🦋

#include <gelf.h>

int gelf_getclass(Elf *elf);

like. that's it. one include, one function, one Elf *. slay. 💅

💜 DESCRIPTION 💜

so gelf_getclass() returns the class of the ELF object that elf points at. no cap.

if you've got a valid ELF file on your hands, the class is gonna be one of these two gorgeous options:

  • ELFCLASS32 — the object is a 32-bit ELF class. tiny. adorable. still valid. 🍓
  • ELFCLASS64 — the object is a 64-bit ELF class. big. powerful. main character energy. 👑

and if elf is not denoting a valid ELF object, or the class literally cannot be determined? you get ELFCLASSNONE back. 😭 the void. the nothingness. we don't love that for you but it's the truth.

🔥 RETURN VALUE 🔥

on success you get ELFCLASS32 or ELFCLASS64. periodt. 🫶

but listen — if elf is NULL, or if it doesn't refer to a valid ELF binary with kind ELF_K_ELF, then ELFCLASSNONE is what you're getting back. so uh. check that pointer, bestie. 🙈

🌈 SEE ALSO 🌈

go read those too, iykyk. ✨

💅 ATTRIBUTES 💅

  • Interface — gelf_getclass()
  • Attribute — Thread safety
  • Value — MT-unsafe race
⚠️ okay so real talk: MT-unsafe race. that means if you're out here threading this call all willy-nilly, that's a race condition. be careful, queen. 💀

🎀 REPORTING BUGS 🎀

found a bug? not the cute kind? 😭 report it to <elfutils-devel@sourceware.org> or hit up https://sourceware.org/bugzilla/. they'll love you for it. fr fr. 🫶

and that's the whole page, bestie!! this was Libelf, dated 2025-09-14, brought to you by the Libelf Programmer's Manual — go forth and check your classes. mwah. 💖✨🦋

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