public static int Access(Thread current, ref Arch.ExceptionRegisters regs, UserPtr filenamePtr, int mode)
{
// XXX: This is vfs related, now let's assume that we're dealing with pass through fs.
var buf = Globals.AllocateAlignedCompletionBuffer(PATH_MAX);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var ret = filenamePtr.ReadString(current, buf);
var accessCompletion = new BridgeCompletion(current, buf);
ret = Arch.IPCStubs.AccessAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), mode);
if (ret < 0)
{
accessCompletion.Dispose();
return(ret);
}
Globals.CompletionQueue.Enqueue(accessCompletion);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
public static int Write(Thread current, ref Arch.ExceptionRegisters regs, int fd, UserPtr userBuf, int len)
{
if (len == 0)
{
return(0);
}
if (len < 0)
{
return(-ErrorCode.EINVAL);
}
var proc = current.Parent;
var file = proc.LookupFile(fd);
if (file == null)
{
return(-ErrorCode.EBADF);
}
var mode = file.flags & FileFlags.ReadWriteMask;
if (mode == FileFlags.ReadOnly)
{
return(-ErrorCode.EPERM);
}
int ret = file.Write(current, ref regs, userBuf, len);
return(ret);
}
internal int Write(Thread current, ref Arch.ExceptionRegisters regs, ref ByteBufferRef buf, int len)
{
Contract.Requires(GhostOwner == current.Parent);
var ret = inode.Write(current, ref regs, ref buf, len, position, this);
return(ret);
}
public int Read(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBuf, int len, uint pos)
{
Contract.Requires(GhostOwner == current.Parent);
var ret = inode.Read(current, ref regs, userBuf, len, pos, null);
return(ret);
}
private static int Recv(Thread current, ref Arch.ExceptionRegisters regs, UserPtr ptr_label, UserPtr userBuf, uint size)
{
Contract.Requires(current.VBinderState.Owner == current);
if (!current.Parent.Space.VerifyWrite(userBuf, size) || !current.Parent.Space.VerifyWrite(ptr_label, sizeof(int)))
{
return(-ErrorCode.EFAULT);
}
var b = current.VBinderState.NoPendingMessages();
if (b)
{
var entry = new VBinderCompletion(current, ptr_label, userBuf, size);
current.VBinderState.Completion = entry;
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
else
{
var msg = current.VBinderState.TakeMessage();
Contract.Assert(msg.GhostTarget == current);
var length = msg.Length;
ptr_label.Write(current.Parent, msg.label);
userBuf.Write(current, new Pointer(msg.payload.Location), length);
msg.Recycle();
return(length);
}
}
private static bool IsLinuxSyscall(Msgtag tag, ref ExceptionRegisters exc)
{
const uint GP_TRAP_NO = 0xd;
const uint LINUX_SYSCALL_GATE = 0x80;
return(tag.Label == Msgtag.L4_PROTO_EXCEPTION && exc.trapno == GP_TRAP_NO && exc.err == LINUX_SYSCALL_GATE * 8 + 2);
}
internal int SFSWrite(Thread current, ref Arch.ExceptionRegisters regs, ByteBufferRef buf, int len, uint pos, File file)
{
var writtenBytes = Write(current, buf, len, pos);
if (writtenBytes <= 0)
{
return(writtenBytes);
}
file.position = (uint)(pos + writtenBytes);
return(writtenBytes);
}
private static int Socket(Thread current, ref Arch.ExceptionRegisters regs, int domain, int type, int protocol)
{
var proc = current.Parent;
Arch.IPCStubs.SocketAsync(proc.helperPid, current.impl._value.thread._value, domain, type, protocol);
var completion = new SocketCompletion(current);
Globals.CompletionQueue.Enqueue(completion);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
internal int Read(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
switch (kind)
{
case INodeKind.ArchINodeKind:
case INodeKind.SocketINodeKind:
return(ArchINode.ArchRead(current, ref regs, userBuf, len, pos, file));
case INodeKind.SecureFSINodeKind:
return(SFSINode.SFSRead(current, ref regs, userBuf, len, pos, file));
}
return(-ErrorCode.EINVAL);
}
private static int BindOrConnect(int type, Thread current, ref Arch.ExceptionRegisters regs, int sockfd, UserPtr sockaddr, int addrlen)
{
Contract.Requires(type == SYS_BIND || type == SYS_CONNECT);
var proc = current.Parent;
var file = proc.LookupFile(sockfd);
if (file == null)
{
return(-ErrorCode.EBADF);
}
if (file.inode.kind != GenericINode.INodeKind.SocketINodeKind)
{
return(-ErrorCode.ENOTSOCK);
}
if (addrlen > Globals.LinuxIPCBuffer.Length)
{
return(-ErrorCode.EINVAL);
}
var buf = Globals.AllocateAlignedCompletionBuffer(addrlen);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var completion = new BridgeCompletion(current, buf);
if (sockaddr.Read(current, buf, addrlen) != 0)
{
completion.Dispose();
return(-ErrorCode.EFAULT);
}
if (type == SYS_BIND)
{
Arch.IPCStubs.BindAsync(proc.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), file.inode.LinuxFd, addrlen);
}
else if (type == SYS_CONNECT)
{
Arch.IPCStubs.ConnectAsync(proc.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), file.inode.LinuxFd, addrlen);
}
Globals.CompletionQueue.Enqueue(completion);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
internal int SFSRead(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var readBytes = Read(current, userBuf, len, pos);
if (readBytes <= 0)
{
return(readBytes);
}
if (file != null)
{
file.position = (uint)(pos + readBytes);
}
return(readBytes);
}
internal int Ioctl(Thread current, ref Arch.ExceptionRegisters regs, int arg0, int arg1)
{
switch (kind)
{
case INodeKind.BinderINodeKind:
return(BinderINode.Ioctl(current, ref regs, (uint)arg0, new UserPtr(arg1)));
// There's no good way to figure out the type of a bindersharednode is.
// So we have to guess a little bit..
case INodeKind.AshmemINodeKind:
case INodeKind.BinderSharedINodeKind:
case INodeKind.ArchINodeKind:
case INodeKind.SocketINodeKind:
return(Ioctl(current, (uint)arg0, new UserPtr(arg1)));
}
return(-ErrorCode.EINVAL);
}
public static int Ioctl(Thread current, ref Arch.ExceptionRegisters regs, int fd, int arg0, int arg1)
{
Contract.Requires(current.Parent != null);
var proc = current.Parent;
var file = proc.LookupFile(fd);
if (file == null)
{
Arch.Console.Write("Ioctl: invalid fd=");
Arch.Console.Write(fd);
Arch.Console.WriteLine();
return(-ErrorCode.EBADF);
}
return(file.Ioctl(current, ref regs, arg0, arg1));
}
private static int Getsockopt(Thread current, ref Arch.ExceptionRegisters regs, int sockfd, int level, int optname, UserPtr optval, UserPtr p_optlen)
{
var proc = current.Parent;
var file = proc.LookupFile(sockfd);
if (file == null)
{
return(-ErrorCode.EBADF);
}
if (file.inode.kind != GenericINode.INodeKind.SocketINodeKind)
{
return(-ErrorCode.ENOTSOCK);
}
uint optlen = 0;
if (p_optlen.Read(current, out optlen) != 0)
{
return(-ErrorCode.EFAULT);
}
if (optlen > Globals.LinuxIPCBuffer.Length)
{
return(-ErrorCode.EINVAL);
}
var buf = Globals.AllocateAlignedCompletionBuffer((int)optlen);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var completion = new GetSockParamCompletion(current, optval, p_optlen, buf);
Arch.IPCStubs.GetSockoptAsync(proc.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), file.inode.LinuxFd, level, optname, (int)optlen);
Globals.CompletionQueue.Enqueue(completion);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
public const int SYS_SENDMMSG = 20; /* sys_sendmmsg(2) */
public static int Poll(Thread current, ref Arch.ExceptionRegisters regs, UserPtr fds, int nfds, int timeout)
{
if (nfds < 0)
{
return(-ErrorCode.EINVAL);
}
var pollfd_size = pollfd.Size * nfds;
var buf = Globals.AllocateAlignedCompletionBuffer(pollfd_size);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var poll_entry = new PollCompletion(current, fds, nfds, buf);
if (fds.Read(current, buf, pollfd_size) != 0)
{
poll_entry.Dispose();
return(-ErrorCode.EFAULT);
}
Contract.Assert(buf.Length >= pollfd_size);
if (!TranslateToLinuxFd(current, poll_entry, buf))
{
poll_entry.Dispose();
return(-ErrorCode.EBADF);
}
var ret = Arch.IPCStubs.PollAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), nfds, timeout);
if (ret < 0)
{
poll_entry.Dispose();
return(ret);
}
Globals.CompletionQueue.Enqueue(poll_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
/*
* Write a segment buffer.
*
* The buffer itself is passed as a reference, because some inode might take the ownership
* of the buffer and put it as a part of its completion. In this case the buf is set to empty
*/
internal int Write(Thread current, ref Arch.ExceptionRegisters regs, ref ByteBufferRef buf, int len, uint pos, File file)
{
switch (kind)
{
case INodeKind.ConsoleINodeKind:
{
uint dummy = 0;
return(ConsoleINode.WriteImpl(current, buf, len, ref dummy));
}
case INodeKind.ArchINodeKind:
case INodeKind.SocketINodeKind:
return(ArchINode.ArchWrite(current, ref regs, ref buf, len, pos, file));
case INodeKind.SecureFSINodeKind:
return(SFSINode.SFSWrite(current, ref regs, buf, len, pos, file));
}
return(-ErrorCode.EINVAL);
}
public static int DoFutex(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int op, int val, UserPtr timeoutPtr, UserPtr uaddr2, uint val3)
{
var cmd = op & FUTEX_CMD_MASK;
var flags = ToFlags(op, cmd);
timespec ts;
ts.tv_sec = ts.tv_nsec = 0;
// Don't care about shared mutex
if ((flags & FLAGS_SHARED) != 0)
{
return(DoFutexShared(current, ref regs, uaddr, op, val, timeoutPtr, uaddr2, val3));
}
bool hasTimeout = timeoutPtr != UserPtr.Zero;
if (hasTimeout && timeoutPtr.Read(current, out ts) != 0)
{
return(-ErrorCode.EFAULT);
}
switch (cmd)
{
case FUTEX_WAIT:
return(Wait(current, ref regs, uaddr, flags, val, hasTimeout, ts, FUTEX_BITSET_MATCH_ANY));
case FUTEX_WAIT_BITSET:
return(Wait(current, ref regs, uaddr, flags, val, hasTimeout, ts, val3));
case FUTEX_WAKE:
return(Wake(current, uaddr, flags, val, FUTEX_BITSET_MATCH_ANY));
case FUTEX_WAKE_BITSET:
return(Wake(current, uaddr, flags, val, val3));
default:
Arch.Console.Write("futex: unknown primitives ");
Arch.Console.Write(cmd);
Arch.Console.WriteLine();
return(-ErrorCode.ENOSYS);
}
}
public static int Dispatch(Thread current, ref Arch.ExceptionRegisters regs, int cmd, int arg1, int arg2, int arg3)
{
Contract.Requires(current != null && current.VBinderState.Owner == current);
switch (cmd)
{
case VBINDER_REGISTER_CHANNEL:
return(CreateChannel(current, arg1, arg2));
case VBINDER_ACQUIRE_CHANNEL:
return(AcquireChannel(current, arg1, arg2));
case VBINDER_SEND:
return(Send(current, arg1, new UserPtr(arg2), (uint)arg3));
case VBINDER_RECV:
return(Recv(current, ref regs, new UserPtr(arg1), new UserPtr(arg2), (uint)arg3));
}
return(-ErrorCode.ENOSYS);
}
public static int Nanosleep(Thread current, ref Arch.ExceptionRegisters regs, UserPtr rqtp, UserPtr rmtp)
{
timespec ts;
timespec trem;
trem.tv_sec = 0;
trem.tv_nsec = 0;
if (rqtp.Read(current, out ts) != 0 || rmtp.Write(current, ref trem) != 0)
{
return(-ErrorCode.EFAULT);
}
Globals.TimeoutQueue.Enqueue(ts.ToMilliseconds(), current);
var c = new SleepCompletion(current);
Globals.CompletionQueue.Enqueue(c);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
internal int Write(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var buf = Globals.AllocateAlignedCompletionBuffer(len);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var l = userBuf.Read(current, buf, len);
var bytesToBeWritten = len - l;
var ret = Write(current, ref regs, ref buf, bytesToBeWritten, pos, file);
// Buffer hasn't been taken by write(), free it here
if (buf.isValid)
{
Globals.CompletionQueueAllocator.FreePages(new Pointer(buf.Location), buf.Length >> Arch.ArchDefinition.PageShift);
}
return(ret);
}
private static int HandleSyscall(L4Handle src, Thread thr, ref Msgtag pt_tag, ref ExceptionRegisters pt_regs)
{
/*
* Make a copy of the registers, as other IPC calls can override
* the same area.
*/
ExceptionRegisters exc = pt_regs;
var scno = exc.eax;
SyscallProfiler.EnterSyscall(scno);
var ret = SyscallDispatcher.Dispatch(thr, ref exc);
if (thr.AsyncReturn)
{
return(REPLY_DEFERRED);
}
ArchAPI.ReturnFromSyscall(src, ref exc, ret);
SyscallProfiler.ExitSyscall(scno);
return(REPLY_DEFERRED);
}
internal int ArchRead(Thread current, ref ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var buf = Globals.AllocateAlignedCompletionBuffer(len);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var iocp = IOCompletion.CreateReadIOCP(current, userBuf, len, file, buf);
var r = IPCStubs.ReadAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
internal int ArchWrite(Thread current, ref ExceptionRegisters regs, ref ByteBufferRef buf, int len, uint pos, File file)
{
if (!Globals.CompletionQueueAllocator.Contains(buf))
{
Arch.Console.WriteLine("inode-write: unimplemented");
Arch.ArchDefinition.Panic();
}
var iocp = IOCompletion.CreateWriteIOCP(current, file, buf);
var r = IPCStubs.WriteAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
// Take the buffer
buf = ByteBufferRef.Empty;
return(0);
}
private static int Wait(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int flags, int val, bool hasTimeout, timespec ts, uint bitset)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
{
return(-ErrorCode.EFAULT);
}
if (old_val != val)
{
return(-ErrorCode.EWOULDBLOCK);
}
//Arch.Console.Write("wait: addr=");
//Arch.Console.Write(uaddr.Value.ToUInt32());
//Arch.Console.Write(" thr=");
//Arch.Console.Write(current.Tid);
//Arch.Console.WriteLine();
TimerQueueNode node;
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Globals.FutexLists.InsertAtTail(futex_entry);
if (hasTimeout)
{
node = Globals.TimeoutQueue.Enqueue(ts.ToMilliseconds(), current);
futex_entry.timeoutNode = node;
}
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
private static int HandleMessage(L4Handle src, ref Msgtag tag, ref ExceptionRegisters pt_regs, ref MessageRegisters mr)
{
Thread thr;
if (tag.Label == Msgtag.L4_PROTO_PAGE_FAULT || IsLinuxSyscall(tag, ref pt_regs))
{
thr = Globals.Threads.Lookup(src);
if (thr == null)
{
Console.Write("HandleMessage: Unknown thread ");
Console.Write(src._value);
Console.Write(" tag=");
Console.Write(tag.raw);
Console.WriteLine();
return(REPLY_DEFERRED);
}
thr.AsyncReturn = false;
if (tag.Label == Msgtag.L4_PROTO_PAGE_FAULT)
{
return(HandlePageFault(src, thr, ref tag, ref mr));
}
else
{
return(HandleSyscall(src, thr, ref tag, ref pt_regs));
}
}
else if (tag.Label == (int)Arch.IPCStubs.IPCTag.EXPRESSOS_IPC)
{
HandleAsyncCall(ref mr);
return(REPLY_DEFERRED);
}
else if (tag.Label == (int)Arch.IPCStubs.IPCTag.EXPRESSOS_IPC_CMD)
{
switch ((IPCCommand)mr.mr0)
{
case IPCCommand.EXPRESSOS_CMD_DUMP_PROFILE:
SyscallProfiler.Dump();
break;
case IPCCommand.EXPRESSOS_CMD_ENABLE_PROFILER:
SyscallProfiler.Enable = true;
break;
case IPCCommand.EXPRESSOS_CMD_DISABLE_PROFILER:
SyscallProfiler.Enable = false;
break;
case IPCCommand.EXPRESSOS_CMD_FLUSH_CONSOLE:
Console.Flush();
break;
}
return(REPLY_DEFERRED);
}
else
{
Console.Write("Unhandled exception tag=");
Console.Write(tag.raw);
Console.Write(" exc_trapno=");
Console.Write(pt_regs.trapno);
Console.Write(" err=");
Console.Write(pt_regs.err);
Console.Write(" eip=");
Console.Write(pt_regs.ip);
Console.Write(" sp=");
Console.Write(pt_regs.sp);
Console.WriteLine();
}
return(REPLY_DEFERRED);
}
internal static int Dispatch(Thread current, ref ExceptionRegisters regs)
{
int scno, arg0, arg1, arg2, arg3, arg4, arg5;
ArchAPI.GetSyscallParameters(regs, out scno, out arg0, out arg1, out arg2, out arg3, out arg4, out arg5);
current.AsyncReturn = false;
int retval = 0;
switch (scno)
{
case __NR_exit:
Console.Write("Thread ");
Console.Write(current.Tid);
Console.WriteLine(" Exited");
current.Exit();
current.AsyncReturn = true;
break;
case __NR_read:
retval = FileSystem.Read(current, ref regs, arg0, new UserPtr(arg1), arg2);
break;
case __NR_write:
retval = FileSystem.Write(current, ref regs, arg0, new UserPtr(arg1), arg2);
break;
case __NR_open:
retval = FileSystem.Open(current, ref regs, new UserPtr(arg0), arg1, arg2);
break;
case __NR_close:
retval = FileSystem.Close(current, arg0);
break;
case __NR_unlink:
retval = FileSystem.Unlink(current, new UserPtr(arg0));
break;
case __NR_lseek:
retval = FileSystem.Lseek(current, arg0, arg1, arg2);
break;
case __NR_getpid:
retval = ExpressOS.Kernel.Misc.Getpid(current);
break;
case __NR_access:
retval = FileSystem.Access(current, ref regs, new UserPtr(arg0), arg1);
break;
case __NR_mkdir:
retval = FileSystem.Mkdir(current, new UserPtr(arg0), arg1);
break;
case __NR_clone:
retval = ExpressOS.Kernel.Exec.Clone(current, (uint)arg0, new UserPtr(arg1), new UserPtr(arg2), new UserPtr(arg3), ref regs);
break;
case __NR_mprotect:
retval = ExpressOS.Kernel.Memory.mprotect(current, new UserPtr(arg0), arg1, arg2);
break;
case __NR__newselect:
retval = ExpressOS.Kernel.Net.Select(current, ref regs, arg0, new UserPtr(arg1), new UserPtr(arg2), new UserPtr(arg3), new UserPtr(arg4));
break;
case __NR_writev:
retval = FileSystem.Writev(current, ref regs, arg0, new UserPtr(arg1), arg2);
break;
case __NR_uname:
retval = ExpressOS.Kernel.Misc.UName(current, new UserPtr(arg0));
break;
case __NR_fcntl64:
retval = FileSystem.Fcntl64(current, arg0, arg1, arg2);
break;
case __NR_gettid:
retval = ExpressOS.Kernel.Misc.Gettid(current);
break;
case __NR_dup:
retval = FileSystem.Dup(current, arg0);
break;
case __NR_pipe:
retval = FileSystem.Pipe(current, new UserPtr(arg0));
break;
case __NR_brk:
retval = ExpressOS.Kernel.Memory.Brk(current, (uint)arg0);
break;
case __NR_ioctl:
retval = FileSystem.Ioctl(current, ref regs, arg0, arg1, arg2);
break;
case __NR_setgid32:
case __NR_setuid32:
case __NR_flock:
case __NR_sigaction:
case __NR_sigprocmask:
case __NR_sched_setscheduler:
case __NR_setpriority:
case __NR_fsync:
//Console.Write("Mock syscall ");
//Console.Write(scno);
//Console.WriteLine();
retval = 0;
break;
case __NR_futex:
retval = ExpressOS.Kernel.Futex.DoFutex(current, ref regs, new UserPtr(arg0), arg1, arg2, new UserPtr(arg3), new UserPtr(arg4), (uint)arg5);
break;
case __NR_dup2:
retval = FileSystem.Dup2(current, arg0, arg1);
break;
case __NR_gettimeofday:
retval = ExpressOS.Kernel.Misc.Gettimeofday(current, new UserPtr(arg0));
break;
case __NR_munmap:
retval = ExpressOS.Kernel.Memory.munmap(current, new UserPtr(arg0), arg1);
break;
case __NR_ftruncate:
retval = FileSystem.ftruncate(current, arg0, arg1);
break;
case __NR_socketcall:
retval = ExpressOS.Kernel.Net.socketcall(current, ref regs, arg0, new UserPtr(arg1));
break;
case __NR_getpriority:
retval = ExpressOS.Kernel.Misc.Getpriority(current, arg0, arg1);
break;
case __NR_pread64:
retval = FileSystem.Pread64(current, ref regs, arg0, new UserPtr(arg1), arg2, (uint)arg3);
break;
case __NR_getcwd:
retval = FileSystem.Getcwd(current, new UserPtr(arg0), arg1);
break;
case __NR_mmap2:
retval = ExpressOS.Kernel.Memory.mmap2(current, new UserPtr(arg0), arg1, arg2, arg3, arg4, arg5);
break;
case __NR_stat64:
retval = FileSystem.Stat64(current, new UserPtr(arg0), new UserPtr(arg1));
break;
case __NR_fstat64:
retval = FileSystem.FStat64(current, arg0, new UserPtr(arg1));
break;
case __NR_lstat64:
retval = FileSystem.LStat64(current, new UserPtr(arg0), new UserPtr(arg1));
break;
case __NR_getuid32:
case __NR_geteuid32:
retval = ExpressOS.Kernel.Misc.Getuid32(current);
break;
case __NR_madvise:
retval = ExpressOS.Kernel.Memory.madvise(current, (uint)arg0, arg1, arg2);
break;
case __NR_nanosleep:
retval = ExpressOS.Kernel.Misc.Nanosleep(current, ref regs, new UserPtr(arg0), new UserPtr(arg1));
break;
case __NR_sched_yield:
retval = ExpressOS.Kernel.Misc.Yield(current, ref regs);
break;
case __NR_poll:
retval = ExpressOS.Kernel.Net.Poll(current, ref regs, new UserPtr(arg0), arg1, arg2);
break;
case __NR_set_thread_area:
retval = ExpressOS.Kernel.TLS.SetThreadArea(current, new UserPtr(arg0));
break;
case __NR_clock_gettime:
retval = ExpressOS.Kernel.Misc.ClockGetTime(current, arg0, new UserPtr(arg1));
break;
case __NR_exit_group:
Console.WriteLine("Process exited");
Console.Flush();
//Misc.DumpStackTrace(current, new UserPtr(pt_regs->ebp));
//current.Parent.Space.Regions.DumpAll();
current.AsyncReturn = true;
break;
case __NR_vbinder:
retval = ExpressOS.Kernel.VBinder.Dispatch(current, ref regs, arg0, arg1, arg2, arg3);
break;
default:
Console.Write("Unknown syscall ");
Console.Write(scno);
Console.Write('@');
Console.Write(regs.ip);
Console.Write(" tid=");
Console.Write(current.Tid);
Console.WriteLine();
retval = -ErrorCode.ENOSYS;
break;
}
return retval;
}
internal void SaveState(ref Arch.ExceptionRegisters pt_regs)
{
regs = pt_regs;
}
internal int ArchWrite(Thread current, ref ExceptionRegisters regs, ref ByteBufferRef buf, int len, uint pos, File file)
{
if (!Globals.CompletionQueueAllocator.Contains(buf))
{
Arch.Console.WriteLine("inode-write: unimplemented");
Arch.ArchDefinition.Panic();
}
var iocp = IOCompletion.CreateWriteIOCP(current, file, buf);
var r = IPCStubs.WriteAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return r;
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
// Take the buffer
buf = ByteBufferRef.Empty;
return 0;
}
internal int ArchRead(Thread current, ref ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var buf = Globals.AllocateAlignedCompletionBuffer(len);
if (!buf.isValid)
return -ErrorCode.ENOMEM;
var iocp = IOCompletion.CreateReadIOCP(current, userBuf, len, file, buf);
var r = IPCStubs.ReadAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return r;
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
public static int socketcall(Thread current, ref Arch.ExceptionRegisters regs, int call, UserPtr argPtr)
{
int err = 0;
int a0, a1, a2, a3, a4, a5;
SyscallProfiler.EnterSocketcall(call);
switch (call)
{
case SYS_SOCKET:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Socket(current, ref regs, a0, a1, a2);
break;
case SYS_BIND:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Bind(current, ref regs, a0, new UserPtr(a1), a2);
break;
case SYS_CONNECT:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Connect(current, ref regs, a0, new UserPtr(a1), a2);
break;
case SYS_GETSOCKNAME:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Getsockname(current, ref regs, a0, new UserPtr(a1), new UserPtr(a2));
break;
case SYS_SENDTO:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0 || (argPtr + sizeof(int) * 3).Read(current, out a3) != 0 ||
(argPtr + sizeof(int) * 4).Read(current, out a4) != 0 || (argPtr + sizeof(int) * 5).Read(current, out a5) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Sendto(current, a0, new UserPtr(a1), a2, a3, new UserPtr(a4), a5);
break;
case SYS_RECVFROM:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0 || (argPtr + sizeof(int) * 3).Read(current, out a3) != 0 ||
(argPtr + sizeof(int) * 4).Read(current, out a4) != 0 || (argPtr + sizeof(int) * 5).Read(current, out a5) != 0)
{
return(-ErrorCode.EFAULT);
}
err = RecvFrom(current, a0, new UserPtr(a1), a2, a3, new UserPtr(a4), new UserPtr(a5));
break;
case SYS_SHUTDOWN:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Shutdown(current, a0, a1);
break;
case SYS_SETSOCKOPT:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0 || (argPtr + sizeof(int) * 3).Read(current, out a3) != 0 ||
(argPtr + sizeof(int) * 4).Read(current, out a4) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Setsockopt(current, ref regs, a0, a1, a2, new UserPtr(a3), a4);
break;
case SYS_GETSOCKOPT:
if (argPtr.Read(current, out a0) != 0 || (argPtr + sizeof(int)).Read(current, out a1) != 0 ||
(argPtr + sizeof(int) * 2).Read(current, out a2) != 0 || (argPtr + sizeof(int) * 3).Read(current, out a3) != 0 ||
(argPtr + sizeof(int) * 4).Read(current, out a4) != 0)
{
return(-ErrorCode.EFAULT);
}
err = Getsockopt(current, ref regs, a0, a1, a2, new UserPtr(a3), new UserPtr(a4));
break;
default:
Arch.Console.Write("Unimplemented socketcall ");
Arch.Console.Write(call);
Arch.Console.WriteLine();
err = -1;
break;
}
SyscallProfiler.ExitSocketcall(call);
return(err);
}
private static int Connect(Thread current, ref Arch.ExceptionRegisters regs, int sockfd, UserPtr sockaddr, int addrlen)
{
return(BindOrConnect(SYS_CONNECT, current, ref regs, sockfd, sockaddr, addrlen));
}
public static int Clone(Thread current, uint flags, UserPtr newsp, UserPtr parent_tidptr, UserPtr child_tidptr, ref Arch.ExceptionRegisters pt_regs)
{
// Only support pthread_create right now
if (flags != (CLONE_FILES | CLONE_FS | CLONE_VM | CLONE_SIGHAND
| CLONE_THREAD | CLONE_SYSVSEM | CLONE_DETACHED))
{
return(-ErrorCode.EINVAL);
}
var proc = current.Parent;
var thr = Thread.Create(proc);
if (thr == null)
{
Arch.Console.WriteLine("Failed to create thread");
return(-ErrorCode.EINVAL);
}
// Start the main thread
// Skipping the int $0x80
thr.Start(new Pointer(pt_regs.ip + 2), newsp.Value);
// There's no need to set eax for thr as they are zero by default..
return(thr.Tid);
}
// Forward the futex request to Linux helper
private static int DoFutexShared(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int op, int val, UserPtr timeoutPtr, UserPtr uaddr2, uint val3)
{
// Some local test
var cmd = op & FUTEX_CMD_MASK;
timespec ts = new timespec();
bool hasTimeout = timeoutPtr != UserPtr.Zero;
if (hasTimeout && timeoutPtr.Read(current, out ts) != 0)
{
return(-ErrorCode.EFAULT);
}
if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_BITSET)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
{
return(-ErrorCode.EFAULT);
}
if (old_val != val)
{
return(-ErrorCode.EWOULDBLOCK);
}
var bitset = cmd == FUTEX_WAIT ? FUTEX_BITSET_MATCH_ANY : val3;
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wait");
return(0);
}
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Arch.IPCStubs.linux_sys_futex_wait(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, val, ts, bitset);
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
else if (cmd == FUTEX_WAKE || cmd == FUTEX_WAKE_BITSET)
{
var bitset = cmd == FUTEX_WAKE ? FUTEX_BITSET_MATCH_ANY : val3;
if (bitset == 0)
{
return(-ErrorCode.EINVAL);
}
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wake");
return(0);
}
var c = new BridgeCompletion(current, new ByteBufferRef());
Arch.IPCStubs.linux_sys_futex_wake(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, bitset);
Globals.CompletionQueue.Enqueue(c);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
return(0);
}
public static int Select(Thread current, ref Arch.ExceptionRegisters regs, int maxfds, UserPtr inp, UserPtr outp, UserPtr exp, UserPtr tvp)
{
var helper = new SelectHelper();
int ret = 0;
ret = helper.AddUserFdList(current, inp, maxfds, POLLIN);
if (ret < 0)
{
return(ret);
}
ret = helper.AddUserFdList(current, outp, maxfds, POLLOUT);
if (ret < 0)
{
return(ret);
}
ret = helper.AddUserFdList(current, exp, maxfds, POLLERR);
if (ret < 0)
{
return(ret);
}
int timeout = 0;
timeval tv;
if (tvp == UserPtr.Zero)
{
timeout = -1;
}
else if (tvp.Read(current, out tv) != 0)
{
return(-ErrorCode.EFAULT);
}
else
{
timeout = (int)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
}
var nfds = helper.TotalFds;
var pollfd_size = pollfd.Size * nfds;
var buf = Globals.AllocateAlignedCompletionBuffer(pollfd_size);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
helper.WritePollFds(buf);
var select_entry = new SelectCompletion(current, maxfds, inp, outp, exp, helper, buf);
ret = Arch.IPCStubs.PollAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), nfds, timeout);
if (ret < 0)
{
select_entry.Dispose();
return(ret);
}
Globals.CompletionQueue.Enqueue(select_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
