/*

* Copyright (C) 2015 Niek Linnenbank

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

#include <FreeNOS/System.h>

#include <FreeNOS/ProcessEvent.h>

#include <MemoryBlock.h>

#include "VMShare.h"

#include "ProcessID.h"

Error VMShareHandler(ProcessID procID, API::Operation op, ProcessShares::MemoryShare *share)

{

// TODO: use the share.range.physicalAddress as identifier? its unique.

ProcessManager *procs = Kernel::instance->getProcessManager();

Process *proc = ZERO;

Error ret = API::Success;

DEBUG("");

// Find the given process

if (procID == SELF)

{

if (op != API::Read)

return API::InvalidArgument;

else

proc = procs->current();

}

else if (!(proc = procs->get(procID)) && op != API::Delete)

{

return API::NotFound;

}

switch (op)

{

case API::Create:

{

switch (procs->current()->getShares().createShare(proc->getShares(), share))

{

case ProcessShares::Success: return API::Success;

case ProcessShares::AlreadyExists: return API::AlreadyExists;

default: return API::IOError;

}

break;

}

case API::Read:

if (procs->current()->getShares().readShare(share) != ProcessShares::Success)

{

ret = API::IOError;

}

break;

case API::Delete:

if (procs->current()->getShares().removeShares(procID) != ProcessShares::Success)

ret = API::IOError;

break;

default:

return API::InvalidArgument;

}

// Done

return ret;

}