qcomtee_cb_params_from_args(9)

💅 qcomtee_cb_params_from_args(9) — like, the Kernel API Manual page, bestie ✨

Okay so sit down, grab a strawberry drink 🍓, because we're reading the manual page for qcomtee_cb_params_from_args(9) from the Kernel API Manual. Yes it's a whole function name. Yes I'm obsessed. Let's get into it 🫶

---

🌸 NAME 🌸

qcomtee_cb_params_from_args — converts QTEE arguments into TEE parameters. That's the whole gig. It's giving translator energy, no cap 💅

---

✨ SYNOPSIS ✨

int qcomtee_cb_params_from_args (struct tee_param *params , struct
qcomtee_arg *u , int num_params , void __user *ubuf_addr , size_t
ubuf_size , struct tee_context *ctx );

Look at all those arguments. Six of them. She's high maintenance and we love that for her 👑

---

🎀 ARGUMENTS 🎀

• params — the TEE parameters. This is where the converted stuff comes out, bestie 💖
• u — the QTEE arguments. The source material, if you will 🌈
• num_params — literally just how many elements are in that parameter array. Count them. Be accurate 🧚
• ubuf_addr — a user buffer, and it's the one holding the args of type QCOMTEE_ARG_TYPE_IB. Like, that specific type, okay? 🙈
• ubuf_size — the size of that user buffer. Big buffer energy 🌸
• ctx — the context where this whole conversion situation is supposed to happen 🦋

---

💜 DESCRIPTION 💜

So the way this works is: it expects params to already have enough entries for u. Like, enough room. Do not show up with a too-small array, that's not the vibe 😭

And the entries in params? They're of type TEE_IOCTL_PARAM_ATTR_TYPE_NONE. That's just how it is. Periodt ✨

---

🔥 RETURN 🔥

• ✅ On success — returns the number of input parameters. Slay.
• 💀 On failure — returns a value that's < 0. So like, negative. Check for it, ngl.

---

🦋 SEE ALSO 🦋

• Kernel file ./drivers/tee/qcomtee/user_obj.c
• User Objects aka Supplicants(9)
• struct qcomtee_user_object(9)
• enum qcomtee_req_state(9)
• ureq_dequeue(9)
• ureq_select(9)
• qcomtee_user_param_to_object(9)
• qcomtee_cb_params_to_args(9) — yes, her reverse sister, iconic 💅
• qcomtee_user_object_select(9)
• qcomtee_user_object_submit(9)

---

🌟 Little sign-off from the source: this page lives in ./drivers/tee/qcomtee, and it's dated October 2026. Mark your calendars, bestie 🗓️💖

Go forth and convert those args. You got this, main character 🎀👑