elf_read_phdrs(9)

💜 elf_read_phdrs 💜

okay so real talk bestie, this one lives in the Kernel API Manual, section 9 — the kernel-functions girlies, you know the vibe 🎀

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✨ NAME ✨

elf_read_phdrs — the one that reads the program headers from the buffer 🦋

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✨ SYNOPSIS ✨

int elf_read_phdrs (const char *buf , size_t len , struct kexec_elf_info
*elf_info );

like, that's the whole signature, no notes 💅

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✨ ARGUMENTS ✨

ngl the original page is giving mystery with these, so I'm not gonna invent anything — here's exactly what we've got:

• buf — undescribed 🙈 no literally, that's all it says
• len — undescribed 🫠 same energy
• elf_info — undescribed 😭 three for three

okay bestie I know, I know — the manpage really said "figure it out" for all three. I'm not gonna make stuff up though, because that would be a whole lie and we don't do that here 💀

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✨ DESCRIPTION ✨

so here's the thing that actually matters: this function assumes that the program header table was checked for sanity. like, it just trusts you. it's walking in with main character energy and full faith in your table 🌈

if it wasn't checked?? use elf_is_ehdr_sane — that's the sanity check, go do it first, no cap ⭐

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✨ SEE ALSO ✨

the whole friend group 🫶 all from the kernel file ./kernel/kexec_elf.c:

• elf_is_ehdr_sane(9)
• elf_is_phdr_sane(9)
• elf_read_from_buffer(9)
• kexec_free_elf_info(9)
• kexec_build_elf_info(9)
• kexec_elf_load(9)

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💖 and that's the page! shoutout to ./kernel for the source, and this one's stamped October 2026 — iconic, obsessed, bye bestie! 👑✨