tee_shm_register_fd(9)

💖 tee_shm_register_fd — like, the TEE shared-memory-from-an-fd situation 💖

okay so bestie, welcome to the tee_shm_register_fd(9) page from the Kernel API Manual ✨ this one's short but it's important, so grab your iced coffee and let's get into it 🎀

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✨ NAME ✨

tee_shm_register_fd — register shared memory from a file descriptor 🦋

Like the name literally says it: you got an fd, you got shared memory, and this function is the matchmaker 💅

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🌸 SYNOPSIS 🌸

struct tee_shm * tee_shm_register_fd (struct tee_context *ctx , int fd );

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🎀 ARGUMENTS 🎀

• ctx — the context that allocates the shared memory 🫶 like, this is the one doing the allocating, no cap
• fd — the shared memory file descriptor reference 🍓 your ticket to the shared memory party

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💅 DESCRIPTION 💅

so what does it do? it returns a pointer to struct tee_shm on success — iconic 👑 — and ERR_PTR on failure 😭 (yes, ERR_PTR, not NULL, she's built different, don't @ me)

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🔥 SEE ALSO 🔥

the whole friend group, fr fr 💜

• Kernel file ./include/linux/tee_drv.h
• struct tee_context(9)
• struct tee_shm(9)
• tee_shm_alloc_kernel_buf(9)
• tee_shm_register_kernel_buf(9)
• tee_shm_free(9)
• tee_shm_get_va(9)
• tee_shm_get_pa(9)
• tee_shm_get_size(9)
• tee_shm_get_pages(9)
• tee_shm_get_page_offset(9)
• tee_client_open_context(9)
• tee_client_close_context(9)
• tee_client_get_version(9)
• tee_client_open_session(9)
• tee_client_close_session(9)
• tee_client_system_session(9)
• tee_client_invoke_func(9)
• tee_client_cancel_req(9)
• struct tee_client_device(9)
• struct tee_client_driver(9)

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and that's the whole page, bestie 🌈 sign-off time: this one lives in ./include/linux, it's dated October 2026, and it's literally tee_shm_register_fd(9) — go register some shared memory, ily, bye 💖✨🧚