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possibly fix stale card data used due to failed umount

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This commit is contained in:
Chris Danford
2004-03-29 09:01:56 +00:00
parent d6e52f6aac
commit 60a89b8cf4
1 changed files with 80 additions and 40 deletions
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stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp
+80 -40
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@@ -22,6 +22,21 @@ int MemoryCardDriver_Linux::MountThread_Start( void *p )
return 0;
}
template<class T>
bool VectorsAreEqual( const T &a, const T &b )
{
if( a.size() != b.size() )
return false;
for( unsigned i=0; i<a.size(); i++ )
{
if( a[i] != b[i] )
return false;
}
return true;
}
void MemoryCardDriver_Linux::MountThreadMain()
{
int fd = open(USB_DEVICE_LIST_FILE, O_RDONLY);
@@ -60,51 +75,69 @@ void MemoryCardDriver_Linux::MountThreadMain()
vector<UsbStorageDevice> vDevicesNow;
this->GetStorageDevices( vDevicesNow );
bool bDevicesChanged = false;
if( vDevicesLastSeen.size() != vDevicesNow.size() )
vector<UsbStorageDevice> &vNew = vDevicesNow;
vector<UsbStorageDevice> &vOld = vDevicesLastSeen;
// check for disconnects
vector<UsbStorageDevice> vDisconnects;
for( unsigned i=0; i<vOld.size(); i++ )
{
bDevicesChanged = true;
}
else
{
for( unsigned i=0; i<vDevicesLastSeen.size(); i++ )
const UsbStorageDevice old = vOld[i];
if( find(vNew.begin(),vNew.end(),old) == vNew.end() )// didn't find
{
const UsbStorageDevice d1 = vDevicesLastSeen[i];
const UsbStorageDevice d2 = vDevicesNow[i];
if( d1 != d2 )
{
bDevicesChanged = true;
break;
}
LOG->Trace( ssprintf("Disconnected bus %d port %d device %d path %s", old.iBus, old.iPortOnHub, old.iDeviceOnBus, old.sOsMountDir.c_str()) );
vDisconnects.push_back( old );
}
}
if( bDevicesChanged )
// check for connects
vector<UsbStorageDevice> vConnects;
for( unsigned i=0; i<vNew.size(); i++ )
{
// unmount all old devices
for( unsigned i=0; i<vDevicesLastSeen.size(); i++ )
{
const UsbStorageDevice d = vDevicesLastSeen[i];
CString sCommand = "umount " + d.sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
}
for( unsigned i=0; i<vDevicesNow.size(); i++ )
{
const UsbStorageDevice d = vDevicesNow[i];
CString sCommand = "mount " + d.sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
const UsbStorageDevice newd = vNew[i];
if( find(vOld.begin(),vOld.end(),newd) == vOld.end() )// didn't find
{
LOG->Trace( ssprintf("Connected bus %d port %d device %d path %s", newd.iBus, newd.iPortOnHub, newd.iDeviceOnBus, newd.sOsMountDir.c_str()) );
vConnects.push_back( newd );
}
{
LockMut( m_StorageDevicesChangedMutex );
m_bStorageDevicesChanged = true;
}
}
// unmount all disconnects
for( unsigned i=0; i<vDisconnects.size(); i++ )
{
const UsbStorageDevice &d = vDisconnects[i];
CString sCommand = "umount " + d.sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
}
// mount all connects
for( unsigned i=0; i<vConnects.size(); i++ )
{
const UsbStorageDevice d = vConnects[i];
CString sCommand;
// unmount this device before trying to mount it. If this device
// wasn't unmounted before, then our mount call will fail and the
// mount may contain an out-of-date view of the files on the device.
sCommand = "umount " + d.sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
sCommand = "mount " + d.sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
}
if( !vDisconnects.empty() || !vConnects.empty() )
{
LockMut( m_StorageDevicesChangedMutex );
m_bStorageDevicesChanged = true;
}
vDevicesLastSeen = vDevicesNow;
}
usleep( 1000*100 ); // 100 ms
@@ -384,13 +417,20 @@ void MemoryCardDriver_Linux::Flush( UsbStorageDevice* pDevice )
// very slow.) -glenn
CString sCommand = "mount -o remount " + pDevice->sOsMountDir;
LOG->Trace( "executing '%s'", sCommand.c_str() );
system( sCommand );
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
}
void MemoryCardDriver_Linux::ResetUsbStorage()
{
system( "rmmod usb-storage" );
system( "modprobe usb-storage" );
CString sCommand;
sCommand = "rmmod usb-storage";
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
sCommand = "modprobe usb-storage";
if( system(sCommand) == -1 )
LOG->Warn( "failed to execute '%s'", sCommand.c_str() );
}