/*
* Remove the devices that are no longer present in the system.
*/
int checkDiscoveryRemoveDevices() {
int i;
struct FreespaceDeviceStruct* list[FREESPACE_MAXIMUM_DEVICE_COUNT];
int listLength = 0;
// Collect the removed devices.
freespace_private_filterDevices(list, FREESPACE_MAXIMUM_DEVICE_COUNT, &listLength, filterSweep);
// Remove them from the device list so that future API calls fail to this device
// fail. See callbacks after this loop.
for (i = 0; i < listLength; i++) {
int idx;
DEBUG_WPRINTF(L"device %d removed\n", list[i]->id_);
for (idx = 0; idx < freespace_instance_->deviceCount_; idx++) {
if (list[i] == freespace_instance_->devices_[idx]) {
memmove(&freespace_instance_->devices_[idx], &freespace_instance_->devices_[idx + 1], (freespace_instance_->deviceCount_ - idx - 1) * sizeof(struct FreespaceDeviceStruct*));
freespace_instance_->deviceCount_--;
}
}
}
// Call the removal callbacks.
for (i = 0; i < listLength; i++) {
freespace_private_removeDevice(list[i]);
}
// Free the device structure.
for (i = 0; i < listLength; i++) {
freespace_private_freeDevice(list[i]);
}
return listLength;
}
/**
* Handle the case where the device unexpectedly fails.
* @param device The device the failed.
* @param ec The error code from GetLastError()
* @return The device error code.
*/
int handleDeviceFailure(struct FreespaceDeviceStruct* device, int ec) {
int rc = FREESPACE_ERROR_UNEXPECTED;
int formatRc = 0;
LPVOID lpMsgBuf;
// Retrieve the system error message for the last-error code
formatRc = FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
ec,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0, NULL );
if (formatRc == 0) {
DEBUG_WPRINTF(L"handleDeviceFailure: %d\n", ec);
} else {
// Display the error message and exit the process
DEBUG_WPRINTF(L"handleDeviceFailure: %d => %s\n", ec, lpMsgBuf);
LocalFree(lpMsgBuf);
}
// Clean up this device.
freespace_private_removeDevice(device);
freespace_private_forceCloseDevice(device);
freespace_private_requestDeviceRescan();
if (ec == ERROR_DEVICE_NOT_CONNECTED) {
rc = FREESPACE_ERROR_NOT_FOUND;
}
return rc;
}
/*
* Process devices with multiple handles that are not fully complete.
*/
int checkDiscoveryPartiallyRemovedDevices() {
struct FreespaceDeviceStruct* list[FREESPACE_MAXIMUM_DEVICE_COUNT];
int listLength = 0;
int i;
// Collect the removed devices and call the removed callbacks.
freespace_private_filterDevices(list, FREESPACE_MAXIMUM_DEVICE_COUNT, &listLength, filterPartiallyRemoved);
for (i = 0; i < listLength; i++) {
DEBUG_WPRINTF(L"device %d partially removed\n", list[i]->id_);
}
for (i = 0; i < listLength; i++) {
freespace_private_removeDevice(list[i]);
}
// Close file handles of devices that are open.
for (i = 0; i < listLength; i++) {
freespace_closeDevice(list[i]->id_);
}
return listLength;
}
