mtd_ooblayout_get_databytes(9)

✨ NAME ✨

okay bestie, welcome to mtd_ooblayout_get_databytes(9) from the Kernel API Manual — and this one is literally here to extract data bytes from the oob buffer. no cap, that's the whole iconique job 💅

🌸 SYNOPSIS 🌸

the signature is giving very “kernel function realness”, so here it is exactly:

int mtd_ooblayout_get_databytes (struct mtd_info *mtd , u8 *databuf ,
       const u8 *oobbuf , int start , int nbytes );

💅 ARGUMENTS 💅

• mtd — the mtd info structure, aka the main character that tells us what's what 🫶
• databuf — destination buffer to store ECC bytes, literally where the bytes are headed 🎀
• oobbuf — the OOB buffer, no cap 🦋
• start — first ECC byte to retrieve, your starting point bestie ✨
• nbytes — number of ECC bytes to retrieve, like how many we're pulling 🔥

🦋 DESCRIPTION 🦋

so it works like mtd_ooblayout_get_bytes, except it acts on free bytes. that's the vibe check, periodt 😌

returns zero on success, a negative error code otherwise — that's the whole mood 💀

🎀 SEE ALSO 🎀

Kernel file ./drivers/mtd/mtdcore.c — and the whole friend group is: mtd_wunit_to_pairing_info(9), mtd_pairing_info_to_wunit(9), mtd_pairing_groups(9), add_mtd_device(9), del_mtd_device(9), mtd_device_parse_register(9), mtd_device_unregister(9), register_mtd_user(9), unregister_mtd_user(9), get_mtd_device(9), of_get_mtd_device_by_node(9), get_mtd_device_nm(9), mtd_ooblayout_ecc(9), mtd_ooblayout_free(9), mtd_ooblayout_find_region(9), mtd_ooblayout_find_eccregion(9), mtd_ooblayout_get_bytes(9), mtd_ooblayout_set_bytes(9), mtd_ooblayout_count_bytes(9), mtd_ooblayout_get_eccbytes(9), mtd_ooblayout_set_eccbytes(9), mtd_ooblayout_set_databytes(9), mtd_ooblayout_count_freebytes(9), mtd_ooblayout_count_eccbytes(9), mtd_kmalloc_up_to(9) — slay, go read them too 💖

mwah 💋 this page comes from ./drivers/mtd, dated October 2026, and yes bestie it's still mtd_ooblayout_get_databytes(9) — iconic, honestly 🌈👑