apple_smc_get_key_by_index(9)

🎀 NAME 🎀

okay bestie, meet apple_smc_get_key_by_index(9) from the Kernel API Manual. This is the little lookup baddie: you give it an index, and it returns the corresponding SMC key. literally a key-finding moment, no cap ✨

✨ SYNOPSIS ✨

the signature is exactly this, don't touch a character:

int apple_smc_get_key_by_index (struct apple_smc *smc , int index , smc_key *key );

💖 ARGUMENTS 💖

• smc — Pointer to apple_smc struct. yes, that exact struct, she's right there 🫶
• index — Index to be resolved. this is the index you're asking about.
• key — Buffer for SMC key to be returned. it catches the SMC key on the way out 💅

🌟 RETURN 🌟

the return vibe is literally: Zero on success, negative errno on error. zero means slay, it worked; negative errno means nope, something went sideways 😭

🌈 SEE ALSO 🌈

Kernel file ./include/linux/mfd/macsmc.h is the home base. also the whole bestie lineup:

• smc_key(9)
• SMC_KEY(9)
• struct apple_smc_key_info(9)
• enum apple_smc_boot_stage(9)
• struct apple_smc(9)
• apple_smc_read(9)
• apple_smc_write(9)
• apple_smc_enter_atomic(9)
• apple_smc_write_atomic(9)
• apple_smc_rw(9)
• apple_smc_get_key_info(9)
• apple_smc_key_exists(9)

and that's the page! source/version corner is ./include/linux/mfd, dated October 2026, and the manual name is apple_smc_get_key_by_index(9). stay iconic, bestie 💅🫶