handle_drvrcmd(9)

💅 handle_drvrcmd(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, we're in handle_drvrcmd(9), straight out of the Kernel API Manual, and it's giving "tiny function, huge lore." this is the megaraid mm corner of the kernel and honestly? iconic. 🦋

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✨ NAME ✨

handle_drvrcmd — literally just checks if the opcode is a driver cmd, and if it is, it handles it. that's the whole vibe check. no cap. 💅

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🌸 SYNOPSIS 🌸

int handle_drvrcmd (void __user *arg , uint8_t old_ioctl , int *rval );

one function, three args, zero notes. she's clean, she's minimal, she's serving. ✨

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🎀 ARGUMENTS 🎀

• arg — the packet sent by the user app. yes bestie, the user app is the one sliding this into your DMs. 🫶
• old_ioctl — mimd if it's 1; uioc otherwise. choose your fighter, iykyk. 💀
• rval — a pointer for the command's returned value. and important: that's the command's return value, not the function status. do not confuse them, i'm begging 😭 it's a whole different thing.

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🔥 SEE ALSO 🔥

the whole friend group, no gatekeeping, in the kernel file ./drivers/scsi/megaraid/megaraid_mm.c:

• mraid_mm_open(9)
• mraid_mm_ioctl(9)
• mraid_mm_get_adapter(9)
• mimd_to_kioc(9)
• mraid_mm_attach_buf(9)
• mraid_mm_alloc_kioc(9)
• mraid_mm_dealloc_kioc(9)
• lld_ioctl(9)
• ioctl_done(9)
• lld_timedout(9)
• kioc_to_mimd(9)
• hinfo_to_cinfo(9)
• mraid_mm_register_adp(9)
• mraid_mm_adapter_app_handle(9)
• mraid_mm_setup_dma_pools(9)
• mraid_mm_unregister_adp(9)
• mraid_mm_free_adp_resources(9)
• mraid_mm_teardown_dma_pools(9)
• mraid_mm_init(9)
• mraid_mm_exit(9)

that's the full roster, not a single one skipped, main character energy across the board 👑🌈

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a little footnote for the group chat: this page ships out of ./drivers/scsi/megaraid and it's dated October 2026 — so yeah, future-coded and thriving. that's the source, that's the version, that's the whole receipt. 🧚💜

okay bye bestie, go read your ioctls, mwah 💋🌸