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device: Check for device overheating and abort when needed 

Check if a device is too hot. If it is too hot already, refuse
operation. If it becomes too hot while an operation is ongoing, then
cancel the action and force a FP_DEVICE_ERROR_TOO_HOT return value.
This commit is contained in:
Benjamin Berg 2021-04-21 21:24:30 +02:00
parent da28731adc
commit 5b7c5e7c09
2 changed files with 39 additions and 0 deletions
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24
libfprint/fp-device.c
View File

@ -986,6 +986,12 @@ fp_device_enroll (FpDevice *device,
setup_task_cancellable (device);
fpi_device_update_temp (device, TRUE);
if (priv->temp_current == FP_TEMPERATURE_HOT)
{
g_task_return_error (task, fpi_device_error_new (FP_DEVICE_ERROR_TOO_HOT));
fpi_device_update_temp (device, FALSE);
return;
}
data = g_new0 (FpEnrollData, 1);
data->print = g_object_ref_sink (template_print);
@ -1081,6 +1087,12 @@ fp_device_verify (FpDevice *device,
setup_task_cancellable (device);
fpi_device_update_temp (device, TRUE);
if (priv->temp_current == FP_TEMPERATURE_HOT)
{
g_task_return_error (task, fpi_device_error_new (FP_DEVICE_ERROR_TOO_HOT));
fpi_device_update_temp (device, FALSE);
return;
}
data = g_new0 (FpMatchData, 1);
data->enrolled_print = g_object_ref (enrolled_print);
@ -1202,6 +1214,12 @@ fp_device_identify (FpDevice *device,
setup_task_cancellable (device);
fpi_device_update_temp (device, TRUE);
if (priv->temp_current == FP_TEMPERATURE_HOT)
{
g_task_return_error (task, fpi_device_error_new (FP_DEVICE_ERROR_TOO_HOT));
fpi_device_update_temp (device, FALSE);
return;
}
data = g_new0 (FpMatchData, 1);
/* We cannot store the gallery directly, because the ptr array may not own
@ -1321,6 +1339,12 @@ fp_device_capture (FpDevice *device,
setup_task_cancellable (device);
fpi_device_update_temp (device, TRUE);
if (priv->temp_current == FP_TEMPERATURE_HOT)
{
g_task_return_error (task, fpi_device_error_new (FP_DEVICE_ERROR_TOO_HOT));
fpi_device_update_temp (device, FALSE);
return;
}
priv->wait_for_finger = wait_for_finger;

15
libfprint/fpi-device.c
View File

@ -1806,6 +1806,21 @@ fpi_device_update_temp (FpDevice *device, gboolean is_active)
if (priv->temp_current != old_temp)
g_object_notify (G_OBJECT (device), "temperature");
/* If the device is HOT, then do an internal cancellation of long running tasks. */
if (priv->temp_current == FP_TEMPERATURE_HOT)
{
if (priv->current_action == FPI_DEVICE_ACTION_ENROLL ||
priv->current_action == FPI_DEVICE_ACTION_VERIFY ||
priv->current_action == FPI_DEVICE_ACTION_IDENTIFY ||
priv->current_action == FPI_DEVICE_ACTION_CAPTURE)
{
if (!priv->current_cancellation_reason)
priv->current_cancellation_reason = fpi_device_error_new (FP_DEVICE_ERROR_TOO_HOT);
g_cancellable_cancel (priv->current_cancellable);
}
}
g_clear_pointer (&priv->temp_timeout, g_source_destroy);
if (next_threshold < 0)