internal static OpenFileCompletion OpenAndReadPagesAsync(Thread current, byte[] filename, int flags, int mode)
{
Contract.Requires(filename.Length < READ_AHEAD_PAGES * Arch.ArchDefinition.PageSize);
Utils.Assert(filename[filename.Length - 1] == 0);
var size = READ_AHEAD_PAGES * Arch.ArchDefinition.PageSize;
var buf = Globals.AllocateAlignedCompletionBuffer(size);
if (!buf.isValid)
return null;
buf.CopyFrom(0, filename);
var completion = new OpenFileCompletion(current, GenericINode.INodeKind.SecureFSINodeKind, buf, flags, mode);
Arch.IPCStubs.OpenAndReadPagesAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(completion.buf.Location), buf.Length / Arch.ArchDefinition.PageSize, flags, mode);
return completion;
}
internal static OpenFileCompletion OpenAndReadPagesAsync(Thread current, byte[] filename, int flags, int mode)
{
Contract.Requires(filename.Length < READ_AHEAD_PAGES * Arch.ArchDefinition.PageSize);
Utils.Assert(filename[filename.Length - 1] == 0);
var size = READ_AHEAD_PAGES * Arch.ArchDefinition.PageSize;
var buf = Globals.AllocateAlignedCompletionBuffer(size);
if (!buf.isValid)
{
return(null);
}
buf.CopyFrom(0, filename);
var completion = new OpenFileCompletion(current, GenericINode.INodeKind.SecureFSINodeKind, buf, flags, mode);
Arch.IPCStubs.OpenAndReadPagesAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(completion.buf.Location), buf.Length / Arch.ArchDefinition.PageSize, flags, mode);
return(completion);
}
internal static void HandleOpenFileCompletion(OpenFileCompletion c, int linux_fd, int size)
{
var current = c.thr;
var proc = current.Parent;
GenericINode inode = null;
int ret = linux_fd;
if (ret < 0)
{
c.Dispose();
current.ReturnFromCompletion(ret);
return;
}
switch (c.fileKind)
{
case GenericINode.INodeKind.ArchINodeKind:
inode = new Arch.ArchINode(linux_fd, (uint)size, proc.helperPid);
break;
case GenericINode.INodeKind.SecureFSINodeKind:
inode = SecureFS.HandleOpenFileCompletion(c, linux_fd, size, ref ret);
break;
default:
break;
}
if (inode != null)
{
var file = new File(proc, inode, c.flags, c.mode);
ret = proc.GetUnusedFd();
proc.InstallFd(ret, file);
}
c.Dispose();
current.ReturnFromCompletion(ret);
return;
}
internal static void HandleOpenFileCompletion(OpenFileCompletion c, int linux_fd, int size)
{
var current = c.thr;
var proc = current.Parent;
GenericINode inode = null;
int ret = linux_fd;
if (ret < 0)
{
c.Dispose();
current.ReturnFromCompletion(ret);
return;
}
switch (c.fileKind)
{
case GenericINode.INodeKind.ArchINodeKind:
inode = new Arch.ArchINode(linux_fd, (uint)size, proc.helperPid);
break;
case GenericINode.INodeKind.SecureFSINodeKind:
inode = SecureFS.HandleOpenFileCompletion(c, linux_fd, size, ref ret);
break;
default:
break;
}
if (inode != null)
{
var file = new File(proc, inode, c.flags, c.mode);
ret = proc.GetUnusedFd();
proc.InstallFd(ret, file);
}
c.Dispose();
current.ReturnFromCompletion(ret);
return;
}
internal static GenericINode HandleOpenFileCompletion(OpenFileCompletion completion, int linux_fd, int size, ref int p_ret)
{
var current = completion.thr;
return(SecureFSInode.Create(current, completion.buf, linux_fd, size, ref p_ret));
}
internal static GenericINode HandleOpenFileCompletion(OpenFileCompletion completion, int linux_fd, int size, ref int p_ret)
{
var current = completion.thr;
return SecureFSInode.Create(current, completion.buf, linux_fd, size, ref p_ret);
}
