STRUCT TEE_DRIVER_OPS(9)

💖 NAME 💖

struct tee_driver_ops — driver operations vtable. bestie, this is the vtable of driver ops, and she is lowkey the main character of the TEE driver interface 💅

✨ SYNOPSIS ✨

okay so here’s the struct in all her glory — every function pointer exactly as declared, no cap:

       struct tee_driver_ops {
           void (*get_version)(struct tee_device *teedev, struct
       tee_ioctl_version_data *vers);
           int (*get_tee_revision)(struct tee_device *teedev, char *buf, size_t
       len);
           int (*open)(struct tee_context *ctx);
           void (*close_context)(struct tee_context *ctx);
           void (*release)(struct tee_context *ctx);
           int (*open_session)(struct tee_context *ctx, struct
       tee_ioctl_open_session_arg *arg, struct tee_param *param);
           int (*close_session)(struct tee_context *ctx, u32 session);
           int (*system_session)(struct tee_context *ctx, u32 session);
           int (*invoke_func)(struct tee_context *ctx, struct
       tee_ioctl_invoke_arg *arg, struct tee_param *param);
           int (*object_invoke_func)(struct tee_context *ctx, struct
       tee_ioctl_object_invoke_arg *arg, struct tee_param *param);
           int (*cancel_req)(struct tee_context *ctx, u32 cancel_id, u32
       session);
           int (*supp_recv)(struct tee_context *ctx, u32 *func, u32
       *num_params, struct tee_param *param);
           int (*supp_send)(struct tee_context *ctx, u32 ret, u32 num_params,
       struct tee_param *param);
           int (*shm_register)(struct tee_context *ctx, struct tee_shm *shm,
       struct page **pages, size_t num_pages, unsigned long start);
           int (*shm_unregister)(struct tee_context *ctx, struct tee_shm *shm);
        };

🧩 Members 🧩

• get_version — returns version of driver ✨
• get_tee_revision — returns revision string (diagnostic only); do not infer feature support from this, use TEE_IOC_VERSION instead. like bestie, please do not use this for feature checks, okay? 💅
• open — called for a context when the device file is opened 🎀
• close_context — called when the device file is closed 🌸
• release — called to release the context 🫶
• open_session — open a new session ✨
• close_session — close a session 💜
• system_session — declare session as a system session 👑
• invoke_func — invoke a trusted function 🔥
• object_invoke_func — invoke a TEE object 🦋
• cancel_req — request cancel of an ongoing invoke or open 💀
• supp_recv — called for supplicant to get a command 📨
• supp_send — called for supplicant to send a response 💌
• shm_register — register shared memory buffer in TEE 🧚
• shm_unregister — unregister shared memory buffer in TEE 🌈

🌸 Description 🌸

okay so the context given to open might last longer than the device file if it is tied to other resources in the TEE driver. close_context is called when the client closes the device file, even if there are existing references to the context. The TEE driver can use close_context to start cleaning up. that cleanup window is the whole point, bestie — don’t sleep on it 🫶

🦋 SEE ALSO 🦋

Kernel file ./include/linux/tee_core.h — plus the whole friend group:

• struct tee_device(9)
• struct tee_desc(9)
• struct tee_protmem_pool(9)
• struct tee_protmem_pool_ops(9)
• tee_device_alloc(9)
• tee_device_register(9)
• tee_device_unregister(9)
• tee_device_get(9)
• tee_device_put(9)
• tee_device_set_dev_groups(9)
• tee_session_calc_client_uuid(9)
• struct tee_shm_pool(9)
• struct tee_shm_pool_ops(9)
• tee_shm_pool_free(9)
• tee_protmem_static_pool_alloc(9)
• tee_get_drvdata(9)
• tee_shm_alloc_priv_buf(9)
• tee_shm_is_dynamic(9)
• tee_shm_put(9)
• tee_shm_get_id(9)
• tee_shm_get_from_id(9)
• teedev_open(9)
• teedev_close_context(9)
• teedev_ctx_get(9)
• teedev_ctx_put(9)

💖 cute little sign-off: source/version is ./include/linux, dated October 2026, and this was struct tee_driver_ops(9) — bye bestie, go read the TEE docs and slay ✨💅🎀