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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2014, Linaro Limited
* All rights reserved.
*/
#include <assert.h>
#include <tee_api_types.h>
#include <trace.h>
#include <kernel/tee_ta_manager.h>
#include <kernel/user_ta.h>
#include <tee/se/service.h>
#include <tee/se/session.h>
#include <tee/se/reader.h>
#include "service_priv.h"
#include "reader_priv.h"
#include "session_priv.h"
TEE_Result tee_se_service_open(
struct tee_se_service **service)
{
TEE_Result ret;
struct tee_se_service *h;
struct tee_ta_session *sess;
struct user_ta_ctx *utc;
ret = tee_ta_get_current_session(&sess);
if (ret != TEE_SUCCESS)
return ret;
utc = to_user_ta_ctx(sess->ctx);
assert(service);
if (utc->se_service != NULL)
return TEE_ERROR_ACCESS_CONFLICT;
h = malloc(sizeof(struct tee_se_service));
if (!h)
return TEE_ERROR_OUT_OF_MEMORY;
TAILQ_INIT(&h->opened_sessions);
TAILQ_INIT(&h->closed_sessions);
mutex_init(&h->mutex);
*service = h;
utc->se_service = h;
return TEE_SUCCESS;
}
TEE_Result tee_se_service_add_session(
struct tee_se_service *service,
struct tee_se_session *session)
{
assert(service && session);
mutex_lock(&service->mutex);
TAILQ_INSERT_TAIL(&service->opened_sessions, session, link);
mutex_unlock(&service->mutex);
return TEE_SUCCESS;
}
TEE_Result tee_se_service_is_session_closed(
struct tee_se_service *service,
struct tee_se_session *session)
{
struct tee_se_session *s;
TAILQ_FOREACH(s, &service->closed_sessions, link) {
if (s == session)
return TEE_SUCCESS;
}
return tee_se_reader_check_state(session->reader_proxy);
}
void tee_se_service_close_session(
struct tee_se_service *service,
struct tee_se_session *session)
{
assert(service && session);
tee_se_session_close(session);
mutex_lock(&service->mutex);
TAILQ_REMOVE(&service->opened_sessions,
session, link);
TAILQ_INSERT_TAIL(&service->closed_sessions,
session, link);
mutex_unlock(&service->mutex);
}
void tee_se_service_close_sessions_by_reader(
struct tee_se_service *service,
struct tee_se_reader_proxy *proxy)
{
struct tee_se_session *s;
assert(service && proxy);
TAILQ_FOREACH(s, &service->opened_sessions, link) {
if (s->reader_proxy == proxy)
tee_se_service_close_session(service, s);
}
}
TEE_Result tee_se_service_close(
struct tee_se_service *service __unused)
{
TEE_Result ret;
struct tee_se_service *h;
struct tee_se_session *s;
struct tee_ta_session *sess;
struct user_ta_ctx *utc;
ret = tee_ta_get_current_session(&sess);
if (ret != TEE_SUCCESS)
return ret;
utc = to_user_ta_ctx(sess->ctx);
assert(utc->se_service);
h = utc->se_service;
/* clean up all sessions */
mutex_lock(&h->mutex);
TAILQ_FOREACH(s, &h->opened_sessions, link) {
TAILQ_REMOVE(&h->opened_sessions, s, link);
tee_se_session_close(s);
}
TAILQ_FOREACH(s, &h->closed_sessions, link)
TAILQ_REMOVE(&h->closed_sessions, s, link);
mutex_unlock(&h->mutex);
free(h);
return TEE_SUCCESS;
}
bool tee_se_service_is_valid(struct tee_se_service *service)
{
TEE_Result ret;
struct tee_ta_session *sess;
ret = tee_ta_get_current_session(&sess);
if (ret != TEE_SUCCESS)
return false;
if (to_user_ta_ctx(sess->ctx)->se_service == service)
return true;
else
return false;
}
bool tee_se_service_is_session_valid(
struct tee_se_service *service,
struct tee_se_session *session_service)
{
struct tee_se_session *sh;
TAILQ_FOREACH(sh, &service->opened_sessions, link) {
if (sh == session_service)
return true;
}
TAILQ_FOREACH(sh, &service->closed_sessions, link) {
if (sh == session_service)
return true;
}
return false;
}
bool tee_se_service_is_channel_valid(struct tee_se_service *service,
struct tee_se_channel *channel)
{
struct tee_se_session *s;
TAILQ_FOREACH(s, &service->opened_sessions, link) {
if (tee_se_session_is_channel_exist(s, channel))
return true;
}
return false;
}
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