setup_ima_buffer(9)

🌸 setup_ima_buffer(9) 🌸

okay so bestie, we're deep in the Kernel API Manual today and this one is genuinely a little cutie: setup_ima_buffer 💖 Her whole job? Add IMA buffer information to the fdt. That's it. That's the vibe. ✨

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✨ NAME ✨

setup_ima_buffer — add IMA buffer information to the fdt 🫶

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🎀 SYNOPSIS 🎀

int setup_ima_buffer (const struct kimage *image , void *fdt , int
chosen_node );

like yes she takes three args and returns an int, we love a consistent queen 👑

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💅 ARGUMENTS 💅

• image — the kexec image that's being loaded rn. main character energy, honestly.
• fdt — the Flattened device tree for the next kernel. she's the blueprint for what comes next 🦋
• chosen_node — the offset to the chosen node. yes, an offset, not a pointer, don't come for her 😭

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🌈 RETURN 🌈

• 0 on success 🎉
• or a negative errno on error 💀

that's the whole vibe check: zero means slay, negative means something went sideways, no cap.

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/of/kexec.c
• fdt_find_and_del_mem_rsv(9)
• get_addr_size_cells(9)
• do_get_kexec_buffer(9)
• ima_get_kexec_buffer(9)
• ima_free_kexec_buffer(9)
• remove_ima_buffer(9)

go read those too, they're all part of the same little friend group fr fr 🫶

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ngl bestie, if you're poking at the fdt and the chosen node in the same function you should probably read the whole kexec crew above before you touch anything 👀

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okay that's the page!! 💜 brought to you by ./drivers/of, dated October 2026, and yes setup_ima_buffer(9) showed up to the footer looking iconic as always 🎀✨