get_note_num...d_size_elf32(9)

💅 get_note_number_and_size_elf32 — Kernel API Manual ✨

okay bestie, so we're diving into the Kernel API Manual today and honestly? this one's a lil niche but it's giving very much "behind the scenes hero" energy 🎀

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🌸 NAME 🌸

get_note_number_and_size_elf32 — literally just gets you the number of PT_NOTE program headers and the sum of the real size of their ELF note segment headers and data. that's it. that's the whole job. iconic, lowkey 🫶

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✨ SYNOPSIS ✨

int get_note_number_and_size_elf32 (const Elf32_Ehdr *ehdr_ptr , int
*nr_ptnote , u64 *sz_ptnote );

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🦋 ARGUMENTS 🦋

• ehdr_ptr — the ELF header, bestie. that's your main character right there 👑
• nr_ptnote — a buffer where the number of PT_NOTE program headers goes to live 💖
• sz_ptnote — a buffer for the size of the unique PT_NOTE program header 🎀

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💀 DESCRIPTION 💀

so what this function does, right — it merges multiple PT_NOTE program headers into one unique single one. slay. the resulting unique entry will have sz_ptnote in its phdr->p_mem. no cap 🧚

⚠️ important vibe check: it is assumed that program headers with PT_NOTE type pointed to by ehdr_ptr have already been updated by update_note_header_size_elf32, and that each of the PT_NOTE program headers has the actual ELF note segment size chilling in its p_memsz member. so like… don't come in here without doing that first, fr fr 😭

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🔥 SEE ALSO 🔥

Kernel file ./fs/proc/vmcore.c plus the whole squad:

• vmcore_alloc_buf(9)
• update_note_header_size_elf64(9)
• get_note_number_and_size_elf64(9)
• copy_notes_elf64(9)
• update_note_header_size_elf32(9)
• copy_notes_elf32(9)
• vmcoredd_write_header(9)
• vmcoredd_update_program_headers(9)
• vmcoredd_update_size(9)
• vmcore_add_device_dump(9)

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so yeah, that's the whole page babes 💜 this little note came from ./fs/proc and it's dated October 2026 — the get_note_num...d_size_elf32(9) era, we love to see it 🌈✨ bye bestie, go merge those program headers 💅