ELF_GETSCN(3)

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💖 ELF_GETSCN(3) — aka the libelf girlies' guide to grabbing a section 💖

okay bestie, welcome to the Libelf Programmer's Manual, section 3 of the manual pages, page ELF_GETSCN. pull up a chair, grab a boba, we're getting you a section descriptor. 🫶

✨ NAME ✨

elf_getscn — retrieve a descriptor for an ELF section at a specified index.

like, you give it a number, it gives you the section. it's giving personal shopper energy. 🛍️

🌸 SYNOPSIS 🌸

#include <libelf.h>

Elf_Scn *elf_getscn(Elf *elf, size_t index);

💅 DESCRIPTION 💅

so the elf_getscn function does exactly one thing and it does it beautifully: it retrieves a section descriptor for the section sitting at the specified index in the ELF object referred to by elf.

that's it. that's the whole job. and honestly? iconic. 👑

🎀 PARAMETERS 🎀

  • elf — an Elf pointer to the ELF object you're pulling the section descriptor out of. your source of truth, your main character. ✨
  • index — a size_t value representing the index of the section whose descriptor you want. and listen, section indices start at 0, not 1, we are not doing the whole "counting from one" thing here. 🚨 also super important: the section at index 0 is always SHT_NULL and does not contain any data. so don't be out here asking for index 0 and expecting a whole payload, because there is none. no cap. 💀

🦋 RETURN VALUE 🦋

on a good day, elf_getscn returns a pointer to the Elf_Scn for the section at the specified index. slay. 💖

if an error occurs, it returns NULL and sets an appropriate libelf error code. so if you get NULL, that's your vibe check failing — go check the error code, bestie, don't just sit there. 😭

🌈 ATTRIBUTES 🌈

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

  • Interface: elf_getscn()
  • Attribute: Thread safety
  • Value: MT-Safe
translation: she's MT-Safe, so multiple threads can run her at once without drama. we love a low-maintenance queen. 👑

🌟 SEE ALSO 🌟

go read those too, i'm not gatekeeping. iykyk. 🧚

🙈 REPORTING BUGS 🙈

found a bug? not the cute kind? report it to <elfutils-devel@sourceware.org> or over at https://sourceware.org/bugzilla/. the maintainers want to know, fr fr. 🍓

and that's the whole page, bestie! 💜 this was the Libelf manual page for ELF_GETSCN(3), dated 2024-07-18 — now go forth and index responsibly. mwah. 💅🌸

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