size_t connection_read_data(struct connection *conn, void *buffer, uint32_t len,
int32_t timeout)
{
size_t ret = 0;
MCDRV_ASSERT(buffer != NULL);
MCDRV_ASSERT(conn->socket_descriptor != NULL);
MCDRV_DBG_VERBOSE(mc_kapi, "read data len = %u for PID = %u",
len, conn->sequence_magic);
do {
/*
* Wait until data is available or timeout
* msecs_to_jiffies(-1) -> wait forever for the sem
*/
if (down_timeout(&(conn->data_available_sem),
msecs_to_jiffies(timeout))) {
MCDRV_DBG_VERBOSE(mc_kapi,
"Timeout reading the data sem");
ret = -2;
break;
}
/*##################################
#mobicore_security_team_add
##################################*/
/*if (mutex_lock_interruptible(&(conn->data_lock))) {
MCDRV_DBG_ERROR(mc_kapi,
"interrupted reading the data sem");
ret = -1;
break;
}*/
mutex_lock(&(conn->data_lock));
/*##################################*/
/* Have data, use it */
if (conn->data_len > 0)
ret = connection_read_data_msg(conn, buffer, len);
mutex_unlock(&(conn->data_lock));
/* There is still some data left */
if (conn->data_len > 0)
up(&conn->data_available_sem);
} while (0);
return ret;
}
size_t connection_read_data(struct connection *conn, void *buffer, uint32_t len,
int32_t timeout)
{
size_t ret = 0;
MCDRV_ASSERT(buffer != NULL);
MCDRV_ASSERT(conn->socket_descriptor != NULL);
MCDRV_DBG_VERBOSE(mc_kapi, "read data len = %u for PID = %u",
len, conn->sequence_magic);
do {
if (down_timeout(&(conn->data_available_sem),
msecs_to_jiffies(timeout))) {
MCDRV_DBG_VERBOSE(mc_kapi,
"Timeout reading the data sem");
ret = -2;
break;
}
if (mutex_lock_interruptible(&(conn->data_lock))) {
MCDRV_DBG_ERROR(mc_kapi,
"interrupted reading the data sem");
ret = -1;
break;
}
if (conn->data_len > 0)
ret = connection_read_data_msg(conn, buffer, len);
mutex_unlock(&(conn->data_lock));
if (conn->data_len > 0)
up(&conn->data_available_sem);
} while (0);
return ret;
}
