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* Copyright (c) 2014, STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <types_ext.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arm.h>
#include <assert.h>
#include <kernel/mutex.h>
#include <kernel/panic.h>
#include <kernel/pseudo_ta.h>
#include <kernel/tee_common.h>
#include <kernel/tee_misc.h>
#include <kernel/tee_ta_manager.h>
#include <kernel/tee_time.h>
#include <kernel/thread.h>
#include <kernel/user_ta.h>
#include <mm/core_mmu.h>
#include <mm/core_memprot.h>
#include <mm/mobj.h>
#include <mm/tee_mmu.h>
#include <tee/tee_svc_cryp.h>
#include <tee/tee_obj.h>
#include <tee/tee_svc_storage.h>
#include <tee_api_types.h>
#include <trace.h>
#include <utee_types.h>
#include <util.h>
/* This mutex protects the critical section in tee_ta_init_session */
struct mutex tee_ta_mutex = MUTEX_INITIALIZER;
static struct condvar tee_ta_cv = CONDVAR_INITIALIZER;
static int tee_ta_single_instance_thread = THREAD_ID_INVALID;
static size_t tee_ta_single_instance_count;
struct tee_ta_ctx_head tee_ctxes = TAILQ_HEAD_INITIALIZER(tee_ctxes);
static void lock_single_instance(void)
{
/* Requires tee_ta_mutex to be held */
if (tee_ta_single_instance_thread != thread_get_id()) {
/* Wait until the single-instance lock is available. */
while (tee_ta_single_instance_thread != THREAD_ID_INVALID)
condvar_wait(&tee_ta_cv, &tee_ta_mutex);
tee_ta_single_instance_thread = thread_get_id();
assert(tee_ta_single_instance_count == 0);
}
tee_ta_single_instance_count++;
}
static void unlock_single_instance(void)
{
/* Requires tee_ta_mutex to be held */
assert(tee_ta_single_instance_thread == thread_get_id());
assert(tee_ta_single_instance_count > 0);
tee_ta_single_instance_count--;
if (tee_ta_single_instance_count == 0) {
tee_ta_single_instance_thread = THREAD_ID_INVALID;
condvar_signal(&tee_ta_cv);
}
}
static bool has_single_instance_lock(void)
{
/* Requires tee_ta_mutex to be held */
return tee_ta_single_instance_thread == thread_get_id();
}
static bool tee_ta_try_set_busy(struct tee_ta_ctx *ctx)
{
bool rc = true;
mutex_lock(&tee_ta_mutex);
if (ctx->flags & TA_FLAG_SINGLE_INSTANCE)
lock_single_instance();
if (has_single_instance_lock()) {
if (ctx->busy) {
/*
* We're holding the single-instance lock and the
* TA is busy, as waiting now would only cause a
* dead-lock, we release the lock and return false.
*/
rc = false;
if (ctx->flags & TA_FLAG_SINGLE_INSTANCE)
unlock_single_instance();
}
} else {
/*
* We're not holding the single-instance lock, we're free to
* wait for the TA to become available.
*/
while (ctx->busy)
condvar_wait(&ctx->busy_cv, &tee_ta_mutex);
}
/* Either it's already true or we should set it to true */
ctx->busy = true;
mutex_unlock(&tee_ta_mutex);
return rc;
}
static void tee_ta_set_busy(struct tee_ta_ctx *ctx)
{
if (!tee_ta_try_set_busy(ctx))
panic();
}
static void tee_ta_clear_busy(struct tee_ta_ctx *ctx)
{
mutex_lock(&tee_ta_mutex);
assert(ctx->busy);
ctx->busy = false;
condvar_signal(&ctx->busy_cv);
if (ctx->flags & TA_FLAG_SINGLE_INSTANCE)
unlock_single_instance();
mutex_unlock(&tee_ta_mutex);
}
static void dec_session_ref_count(struct tee_ta_session *s)
{
assert(s->ref_count > 0);
s->ref_count--;
if (s->ref_count == 1)
condvar_signal(&s->refc_cv);
}
void tee_ta_put_session(struct tee_ta_session *s)
{
mutex_lock(&tee_ta_mutex);
if (s->lock_thread == thread_get_id()) {
s->lock_thread = THREAD_ID_INVALID;
condvar_signal(&s->lock_cv);
}
dec_session_ref_count(s);
mutex_unlock(&tee_ta_mutex);
}
static struct tee_ta_session *find_session(uint32_t id,
struct tee_ta_session_head *open_sessions)
{
struct tee_ta_session *s;
TAILQ_FOREACH(s, open_sessions, link) {
if ((vaddr_t)s == id)
return s;
}
return NULL;
}
struct tee_ta_session *tee_ta_get_session(uint32_t id, bool exclusive,
struct tee_ta_session_head *open_sessions)
{
struct tee_ta_session *s;
mutex_lock(&tee_ta_mutex);
while (true) {
s = find_session(id, open_sessions);
if (!s)
break;
if (s->unlink) {
s = NULL;
break;
}
s->ref_count++;
if (!exclusive)
break;
assert(s->lock_thread != thread_get_id());
while (s->lock_thread != THREAD_ID_INVALID && !s->unlink)
condvar_wait(&s->lock_cv, &tee_ta_mutex);
if (s->unlink) {
dec_session_ref_count(s);
s = NULL;
break;
}
s->lock_thread = thread_get_id();
break;
}
mutex_unlock(&tee_ta_mutex);
return s;
}
static void tee_ta_unlink_session(struct tee_ta_session *s,
struct tee_ta_session_head *open_sessions)
{
mutex_lock(&tee_ta_mutex);
assert(s->ref_count >= 1);
assert(s->lock_thread == thread_get_id());
assert(!s->unlink);
s->unlink = true;
condvar_broadcast(&s->lock_cv);
while (s->ref_count != 1)
condvar_wait(&s->refc_cv, &tee_ta_mutex);
TAILQ_REMOVE(open_sessions, s, link);
mutex_unlock(&tee_ta_mutex);
}
/*
* tee_ta_context_find - Find TA in session list based on a UUID (input)
* Returns a pointer to the session
*/
static struct tee_ta_ctx *tee_ta_context_find(const TEE_UUID *uuid)
{
struct tee_ta_ctx *ctx;
TAILQ_FOREACH(ctx, &tee_ctxes, link) {
if (memcmp(&ctx->uuid, uuid, sizeof(TEE_UUID)) == 0)
return ctx;
}
return NULL;
}
/* check if requester (client ID) matches session initial client */
static TEE_Result check_client(struct tee_ta_session *s, const TEE_Identity *id)
{
if (id == KERN_IDENTITY)
return TEE_SUCCESS;
if (id == NSAPP_IDENTITY) {
if (s->clnt_id.login == TEE_LOGIN_TRUSTED_APP) {
DMSG("nsec tries to hijack TA session");
return TEE_ERROR_ACCESS_DENIED;
}
return TEE_SUCCESS;
}
if (memcmp(&s->clnt_id, id, sizeof(TEE_Identity)) != 0) {
DMSG("client id mismatch");
return TEE_ERROR_ACCESS_DENIED;
}
return TEE_SUCCESS;
}
/*
* Check if invocation parameters matches TA properties
*
* @s - current session handle
* @param - already identified memory references hold a valid 'mobj'.
*
* Policy:
* - All TAs can access 'non-secure' shared memory.
* - All TAs can access TEE private memory (seccpy)
* - Only SDP flagged TAs can accept SDP memory references.
*/
#ifndef CFG_SECURE_DATA_PATH
static bool check_params(struct tee_ta_session *sess __unused,
struct tee_ta_param *param __unused)
{
/*
* When CFG_SECURE_DATA_PATH is not enabled, SDP memory references
* are rejected at OP-TEE core entry. Hence here all TAs have same
* permissions regarding memory reference parameters.
*/
return true;
}
#else
static bool check_params(struct tee_ta_session *sess,
struct tee_ta_param *param)
{
int n;
/*
* When CFG_SECURE_DATA_PATH is enabled, OP-TEE entry allows SHM and
* SDP memory references. Only TAs flagged SDP can access SDP memory.
*/
if (sess->ctx->flags & TA_FLAG_SECURE_DATA_PATH)
return true;
for (n = 0; n < TEE_NUM_PARAMS; n++) {
uint32_t param_type = TEE_PARAM_TYPE_GET(param->types, n);
struct param_mem *mem = ¶m->u[n].mem;
if (param_type != TEE_PARAM_TYPE_MEMREF_INPUT &&
param_type != TEE_PARAM_TYPE_MEMREF_OUTPUT &&
param_type != TEE_PARAM_TYPE_MEMREF_INOUT)
continue;
if (!mem->size)
continue;
if (mobj_is_sdp_mem(mem->mobj))
return false;
}
return true;
}
#endif
static void set_invoke_timeout(struct tee_ta_session *sess,
uint32_t cancel_req_to)
{
TEE_Time current_time;
TEE_Time cancel_time;
if (cancel_req_to == TEE_TIMEOUT_INFINITE)
goto infinite;
if (tee_time_get_sys_time(¤t_time) != TEE_SUCCESS)
goto infinite;
if (ADD_OVERFLOW(current_time.seconds, cancel_req_to / 1000,
&cancel_time.seconds))
goto infinite;
cancel_time.millis = current_time.millis + cancel_req_to % 1000;
if (cancel_time.millis > 1000) {
if (ADD_OVERFLOW(current_time.seconds, 1,
&cancel_time.seconds))
goto infinite;
cancel_time.seconds++;
cancel_time.millis -= 1000;
}
sess->cancel_time = cancel_time;
return;
infinite:
sess->cancel_time.seconds = UINT32_MAX;
sess->cancel_time.millis = UINT32_MAX;
}
/*-----------------------------------------------------------------------------
* Close a Trusted Application and free available resources
*---------------------------------------------------------------------------*/
TEE_Result tee_ta_close_session(struct tee_ta_session *csess,
struct tee_ta_session_head *open_sessions,
const TEE_Identity *clnt_id)
{
struct tee_ta_session *sess;
struct tee_ta_ctx *ctx;
bool keep_alive;
DMSG("tee_ta_close_session(0x%" PRIxVA ")", (vaddr_t)csess);
if (!csess)
return TEE_ERROR_ITEM_NOT_FOUND;
sess = tee_ta_get_session((vaddr_t)csess, true, open_sessions);
if (!sess) {
EMSG("session 0x%" PRIxVA " to be removed is not found",
(vaddr_t)csess);
return TEE_ERROR_ITEM_NOT_FOUND;
}
if (check_client(sess, clnt_id) != TEE_SUCCESS) {
tee_ta_put_session(sess);
return TEE_ERROR_BAD_PARAMETERS; /* intentional generic error */
}
ctx = sess->ctx;
DMSG(" ... Destroy session");
tee_ta_set_busy(ctx);
if (!ctx->panicked) {
set_invoke_timeout(sess, TEE_TIMEOUT_INFINITE);
ctx->ops->enter_close_session(sess);
}
tee_ta_unlink_session(sess, open_sessions);
#if defined(CFG_TA_GPROF_SUPPORT)
free(sess->sbuf);
#endif
free(sess);
tee_ta_clear_busy(ctx);
mutex_lock(&tee_ta_mutex);
if (ctx->ref_count <= 0)
panic();
ctx->ref_count--;
keep_alive = (ctx->flags & TA_FLAG_INSTANCE_KEEP_ALIVE) &&
(ctx->flags & TA_FLAG_SINGLE_INSTANCE);
if (!ctx->ref_count && !keep_alive) {
DMSG(" ... Destroy TA ctx");
TAILQ_REMOVE(&tee_ctxes, ctx, link);
mutex_unlock(&tee_ta_mutex);
condvar_destroy(&ctx->busy_cv);
pgt_flush_ctx(ctx);
ctx->ops->destroy(ctx);
} else
mutex_unlock(&tee_ta_mutex);
return TEE_SUCCESS;
}
static TEE_Result tee_ta_init_session_with_context(struct tee_ta_ctx *ctx,
struct tee_ta_session *s)
{
/*
* If TA isn't single instance it should be loaded as new
* instance instead of doing anything with this instance.
* So tell the caller that we didn't find the TA it the
* caller will load a new instance.
*/
if ((ctx->flags & TA_FLAG_SINGLE_INSTANCE) == 0)
return TEE_ERROR_ITEM_NOT_FOUND;
/*
* The TA is single instance, if it isn't multi session we
* can't create another session unless it's the first
* new session towards a keepAlive TA.
*/
if (((ctx->flags & TA_FLAG_MULTI_SESSION) == 0) &&
!(((ctx->flags & TA_FLAG_INSTANCE_KEEP_ALIVE) != 0) &&
(ctx->ref_count == 0)))
return TEE_ERROR_BUSY;
DMSG(" ... Re-open TA %pUl", (void *)&ctx->uuid);
ctx->ref_count++;
s->ctx = ctx;
return TEE_SUCCESS;
}
static TEE_Result tee_ta_init_session(TEE_ErrorOrigin *err,
struct tee_ta_session_head *open_sessions,
const TEE_UUID *uuid,
struct tee_ta_session **sess)
{
TEE_Result res;
struct tee_ta_ctx *ctx;
struct tee_ta_session *s = calloc(1, sizeof(struct tee_ta_session));
*err = TEE_ORIGIN_TEE;
if (!s)
return TEE_ERROR_OUT_OF_MEMORY;
s->cancel_mask = true;
condvar_init(&s->refc_cv);
condvar_init(&s->lock_cv);
s->lock_thread = THREAD_ID_INVALID;
s->ref_count = 1;
/*
* We take the global TA mutex here and hold it while doing
* RPC to load the TA. This big critical section should be broken
* down into smaller pieces.
*/
mutex_lock(&tee_ta_mutex);
TAILQ_INSERT_TAIL(open_sessions, s, link);
/* Look for already loaded TA */
ctx = tee_ta_context_find(uuid);
if (ctx) {
res = tee_ta_init_session_with_context(ctx, s);
if (res == TEE_SUCCESS || res != TEE_ERROR_ITEM_NOT_FOUND)
goto out;
}
/* Look for static TA */
res = tee_ta_init_pseudo_ta_session(uuid, s);
if (res == TEE_SUCCESS || res != TEE_ERROR_ITEM_NOT_FOUND)
goto out;
/* Look for user TA */
res = tee_ta_init_user_ta_session(uuid, s);
out:
if (res == TEE_SUCCESS) {
*sess = s;
} else {
TAILQ_REMOVE(open_sessions, s, link);
free(s);
}
mutex_unlock(&tee_ta_mutex);
return res;
}
TEE_Result tee_ta_open_session(TEE_ErrorOrigin *err,
struct tee_ta_session **sess,
struct tee_ta_session_head *open_sessions,
const TEE_UUID *uuid,
const TEE_Identity *clnt_id,
uint32_t cancel_req_to,
struct tee_ta_param *param)
{
TEE_Result res;
struct tee_ta_session *s = NULL;
struct tee_ta_ctx *ctx;
bool panicked;
bool was_busy = false;
res = tee_ta_init_session(err, open_sessions, uuid, &s);
if (res != TEE_SUCCESS) {
DMSG("init session failed 0x%x", res);
return res;
}
if (!check_params(s, param))
return TEE_ERROR_BAD_PARAMETERS;
ctx = s->ctx;
if (ctx->panicked) {
DMSG("panicked, call tee_ta_close_session()");
tee_ta_close_session(s, open_sessions, KERN_IDENTITY);
*err = TEE_ORIGIN_TEE;
return TEE_ERROR_TARGET_DEAD;
}
*sess = s;
/* Save identity of the owner of the session */
s->clnt_id = *clnt_id;
if (tee_ta_try_set_busy(ctx)) {
set_invoke_timeout(s, cancel_req_to);
res = ctx->ops->enter_open_session(s, param, err);
tee_ta_clear_busy(ctx);
} else {
/* Deadlock avoided */
res = TEE_ERROR_BUSY;
was_busy = true;
}
panicked = ctx->panicked;
tee_ta_put_session(s);
if (panicked || (res != TEE_SUCCESS))
tee_ta_close_session(s, open_sessions, KERN_IDENTITY);
/*
* Origin error equal to TEE_ORIGIN_TRUSTED_APP for "regular" error,
* apart from panicking.
*/
if (panicked || was_busy)
*err = TEE_ORIGIN_TEE;
else
*err = TEE_ORIGIN_TRUSTED_APP;
if (res != TEE_SUCCESS)
EMSG("Failed. Return error 0x%x", res);
return res;
}
TEE_Result tee_ta_invoke_command(TEE_ErrorOrigin *err,
struct tee_ta_session *sess,
const TEE_Identity *clnt_id,
uint32_t cancel_req_to, uint32_t cmd,
struct tee_ta_param *param)
{
TEE_Result res;
if (check_client(sess, clnt_id) != TEE_SUCCESS)
return TEE_ERROR_BAD_PARAMETERS; /* intentional generic error */
if (!check_params(sess, param))
return TEE_ERROR_BAD_PARAMETERS;
if (sess->ctx->panicked) {
DMSG(" Panicked !");
*err = TEE_ORIGIN_TEE;
return TEE_ERROR_TARGET_DEAD;
}
tee_ta_set_busy(sess->ctx);
set_invoke_timeout(sess, cancel_req_to);
res = sess->ctx->ops->enter_invoke_cmd(sess, cmd, param, err);
if (sess->ctx->panicked) {
*err = TEE_ORIGIN_TEE;
res = TEE_ERROR_TARGET_DEAD;
}
tee_ta_clear_busy(sess->ctx);
if (res != TEE_SUCCESS)
DMSG(" => Error: %x of %d\n", res, *err);
return res;
}
TEE_Result tee_ta_cancel_command(TEE_ErrorOrigin *err,
struct tee_ta_session *sess,
const TEE_Identity *clnt_id)
{
*err = TEE_ORIGIN_TEE;
if (check_client(sess, clnt_id) != TEE_SUCCESS)
return TEE_ERROR_BAD_PARAMETERS; /* intentional generic error */
sess->cancel = true;
return TEE_SUCCESS;
}
bool tee_ta_session_is_cancelled(struct tee_ta_session *s, TEE_Time *curr_time)
{
TEE_Time current_time;
if (s->cancel_mask)
return false;
if (s->cancel)
return true;
if (s->cancel_time.seconds == UINT32_MAX)
return false;
if (curr_time != NULL)
current_time = *curr_time;
else if (tee_time_get_sys_time(¤t_time) != TEE_SUCCESS)
return false;
if (current_time.seconds > s->cancel_time.seconds ||
(current_time.seconds == s->cancel_time.seconds &&
current_time.millis >= s->cancel_time.millis)) {
return true;
}
return false;
}
static void update_current_ctx(struct thread_specific_data *tsd)
{
struct tee_ta_ctx *ctx = NULL;
struct tee_ta_session *s = TAILQ_FIRST(&tsd->sess_stack);
if (s) {
if (is_pseudo_ta_ctx(s->ctx))
s = TAILQ_NEXT(s, link_tsd);
if (s)
ctx = s->ctx;
}
if (tsd->ctx != ctx)
tee_mmu_set_ctx(ctx);
/*
* If ctx->mmu == NULL we must not have user mapping active,
* if ctx->mmu != NULL we must have user mapping active.
*/
if (((ctx && is_user_ta_ctx(ctx) ?
to_user_ta_ctx(ctx)->mmu : NULL) == NULL) ==
core_mmu_user_mapping_is_active())
panic("unexpected active mapping");
}
void tee_ta_push_current_session(struct tee_ta_session *sess)
{
struct thread_specific_data *tsd = thread_get_tsd();
TAILQ_INSERT_HEAD(&tsd->sess_stack, sess, link_tsd);
update_current_ctx(tsd);
}
struct tee_ta_session *tee_ta_pop_current_session(void)
{
struct thread_specific_data *tsd = thread_get_tsd();
struct tee_ta_session *s = TAILQ_FIRST(&tsd->sess_stack);
if (s) {
TAILQ_REMOVE(&tsd->sess_stack, s, link_tsd);
update_current_ctx(tsd);
}
return s;
}
TEE_Result tee_ta_get_current_session(struct tee_ta_session **sess)
{
struct tee_ta_session *s = TAILQ_FIRST(&thread_get_tsd()->sess_stack);
if (!s)
return TEE_ERROR_BAD_STATE;
*sess = s;
return TEE_SUCCESS;
}
struct tee_ta_session *tee_ta_get_calling_session(void)
{
struct tee_ta_session *s = TAILQ_FIRST(&thread_get_tsd()->sess_stack);
if (s)
s = TAILQ_NEXT(s, link_tsd);
return s;
}
TEE_Result tee_ta_get_client_id(TEE_Identity *id)
{
TEE_Result res;
struct tee_ta_session *sess;
res = tee_ta_get_current_session(&sess);
if (res != TEE_SUCCESS)
return res;
if (id == NULL)
return TEE_ERROR_BAD_PARAMETERS;
*id = sess->clnt_id;
return TEE_SUCCESS;
}
/*
* dump_state - Display TA state as an error log.
*/
static void dump_state(struct tee_ta_ctx *ctx)
{
struct tee_ta_session *s = NULL;
bool active __maybe_unused;
active = ((tee_ta_get_current_session(&s) == TEE_SUCCESS) &&
s && s->ctx == ctx);
EMSG_RAW("Status of TA %pUl (%p) %s", (void *)&ctx->uuid, (void *)ctx,
active ? "(active)" : "");
ctx->ops->dump_state(ctx);
}
void tee_ta_dump_current(void)
{
struct tee_ta_session *s = NULL;
if (tee_ta_get_current_session(&s) != TEE_SUCCESS) {
EMSG("no valid session found, cannot log TA status");
return;
}
dump_state(s->ctx);
}
#if defined(CFG_TA_GPROF_SUPPORT)
void tee_ta_gprof_sample_pc(vaddr_t pc)
{
struct tee_ta_session *s;
struct sample_buf *sbuf;
size_t idx;
if (tee_ta_get_current_session(&s) != TEE_SUCCESS)
return;
sbuf = s->sbuf;
if (!sbuf || !sbuf->enabled)
return; /* PC sampling is not enabled */
idx = (((uint64_t)pc - sbuf->offset)/2 * sbuf->scale)/65536;
if (idx < sbuf->nsamples)
sbuf->samples[idx]++;
sbuf->count++;
}
/*
* Update user-mode CPU time for the current session
* @suspend: true if session is being suspended (leaving user mode), false if
* it is resumed (entering user mode)
*/
static void tee_ta_update_session_utime(bool suspend)
{
struct tee_ta_session *s;
struct sample_buf *sbuf;
uint64_t now;
if (tee_ta_get_current_session(&s) != TEE_SUCCESS)
return;
sbuf = s->sbuf;
if (!sbuf)
return;
now = read_cntpct();
if (suspend) {
assert(sbuf->usr_entered);
sbuf->usr += now - sbuf->usr_entered;
sbuf->usr_entered = 0;
} else {
assert(!sbuf->usr_entered);
if (!now)
now++; /* 0 is reserved */
sbuf->usr_entered = now;
}
}
void tee_ta_update_session_utime_suspend(void)
{
tee_ta_update_session_utime(true);
}
void tee_ta_update_session_utime_resume(void)
{
tee_ta_update_session_utime(false);
}
#endif
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