optee_get_msg_arg(9)

💖 optee_get_msg_arg(9) 💖

okay so this is from the Kernel API Manual, and it's literally the page for getting shared memory ready for an argument struct. bestie, it's giving low-level TEE plumbing, and we're obsessed. 🫶

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🌸 NAME 🌸

optee_get_msg_arg — provide shared memory for argument struct

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✨ SYNOPSIS ✨

struct optee_msg_arg * optee_get_msg_arg (struct tee_context *ctx ,
size_t num_params , struct optee_shm_arg_entry **entry_ret , struct
tee_shm **shm_ret , u_int *offs_ret );

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🎀 ARGUMENTS 🎀

• ctx — caller TEE context, the main character of this call 💅
• num_params — number of parameter to store
• entry_ret — entry pointer, needed when freeing the buffer
• shm_ret — shared memory buffer
• offs_ret — offset of the argument strut in the shared memory buffer (yes, the page says “strut” — iconic, keeping it 🍓)

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🦋 DESCRIPTION 🦋

returns a pointer to the argument struct in memory, else an ERR_PTR. periodt. 🔥

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/tee/optee/call.c
• optee_free_msg_arg(9)

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source/version: ./drivers/tee/optee · date: October 2026 — mwah, signed with a little sparkle ✨💋