linux-kernel - [PATCH v2 2/3] tee: optee: Add support for session login client UUID generation

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Message-Id: <20200430123711.20083-3-vesa.jaaskelainen@vaisala.com>
Date:   Thu, 30 Apr 2020 15:37:10 +0300
From:   Vesa Jääskeläinen 
        <vesa.jaaskelainen@...sala.com>
To:     op-tee@...ts.trustedfirmware.org,
        Jens Wiklander <jens.wiklander@...aro.org>
Cc:     Rijo Thomas <Rijo-john.Thomas@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Devaraj Rangasamy <Devaraj.Rangasamy@....com>,
        Hongbo Yao <yaohongbo@...wei.com>,
        Colin Ian King <colin.king@...onical.com>,
        linux-kernel@...r.kernel.org,
        Vesa Jääskeläinen 
        <vesa.jaaskelainen@...sala.com>
Subject: [PATCH v2 2/3] tee: optee: Add support for session login client UUID generation

Adds support for client UUID generation for OP-TEE. For group based session
logins membership is verified.

Signed-off-by: Vesa Jääskeläinen <vesa.jaaskelainen@...sala.com>
---
 drivers/tee/optee/call.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c
index cf2367ba08d6..dbed3f480dc0 100644
--- a/drivers/tee/optee/call.c
+++ b/drivers/tee/optee/call.c
@@ -233,9 +233,13 @@ int optee_open_session(struct tee_context *ctx,
 	msg_arg->params[1].attr = OPTEE_MSG_ATTR_TYPE_VALUE_INPUT |
 				  OPTEE_MSG_ATTR_META;
 	memcpy(&msg_arg->params[0].u.value, arg->uuid, sizeof(arg->uuid));
-	memcpy(&msg_arg->params[1].u.value, arg->uuid, sizeof(arg->clnt_uuid));
 	msg_arg->params[1].u.value.c = arg->clnt_login;
 
+	rc = tee_session_calc_client_uuid((uuid_t *)&msg_arg->params[1].u.value,
+					  arg->clnt_login, arg->clnt_uuid);
+	if (rc)
+		goto out;
+
 	rc = optee_to_msg_param(msg_arg->params + 2, arg->num_params, param);
 	if (rc)
 		goto out;
-- 
2.17.1