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Adds utility function in TEE subsystem for client UUID generation. This

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function is also used in the optee driver.
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Merge tag 'tee-login-for-5.8' of git://git.linaro.org/people/jens.wiklander/linux-tee into arm/drivers

Adds utility function in TEE subsystem for client UUID generation. This
function is also used in the optee driver.

* tag 'tee-login-for-5.8' of git://git.linaro.org/people/jens.wiklander/linux-tee:
  tee: optee: Add support for session login client UUID generation
  tee: add support for session's client UUID generation

Link: https://lore.kernel.org/r/20200512131243.GA10028@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2020-05-25 23:15:02 +02:00
commit be4ad166b4
4 changed files with 174 additions and 1 deletions
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16
include/linux/tee_drv.h
View file

@ -166,6 +166,22 @@ int tee_device_register(struct tee_device *teedev);
*/
void tee_device_unregister(struct tee_device *teedev);
/**
* tee_session_calc_client_uuid() - Calculates client UUID for session
* @uuid: Resulting UUID
* @connection_method: Connection method for session (TEE_IOCTL_LOGIN_*)
* @connectuon_data: Connection data for opening session
*
* Based on connection method calculates UUIDv5 based client UUID.
*
* For group based logins verifies that calling process has specified
* credentials.
*
* @return < 0 on failure
*/
int tee_session_calc_client_uuid(uuid_t *uuid, u32 connection_method,
const u8 connection_data[TEE_IOCTL_UUID_LEN]);
/**
* struct tee_shm - shared memory object
* @ctx: context using the object