public static int Pipe(Thread current, UserPtr pipeFd)
{
var proc = current.Parent;
var helperPid = proc.helperPid;
int fd0, fd1;
var ret = Arch.IPCStubs.Pipe(helperPid, out fd0, out fd1);
if (ret < 0)
{
return(ret);
}
var inode1 = new Arch.ArchINode(fd0, 0, helperPid);
var inode2 = new Arch.ArchINode(fd1, 0, helperPid);
// XXX: are the permission settings correct?
var file1 = new File(proc, inode1, FileFlags.ReadWrite, 0);
var rfd0 = proc.GetUnusedFd();
proc.InstallFd(rfd0, file1);
var file2 = new File(proc, inode2, FileFlags.ReadWrite, 0);
var rfd1 = proc.GetUnusedFd();
proc.InstallFd(rfd1, file2);
//Arch.Console.Write("pipe: linux_fd [");
//Arch.Console.Write(fd0);
//Arch.Console.Write(",");
//Arch.Console.Write(fd1);
//Arch.Console.Write("] => [");
//Arch.Console.Write(rfd0);
//Arch.Console.Write(",");
//Arch.Console.Write(rfd1);
//Arch.Console.Write("], ret=");
//Arch.Console.Write(ret);
//Arch.Console.WriteLine();
if (pipeFd.Write(current, rfd0) != 0 || (pipeFd + sizeof(int)).Write(current, rfd1) != 0)
{
Arch.IPCStubs.Close(helperPid, fd0);
Arch.IPCStubs.Close(helperPid, fd1);
return(-ErrorCode.EFAULT);
}
return(ret);
}
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 SecureFSInode Create(Thread current, ByteBufferRef header, int linux_fd, int size_on_disk, ref int p_ret)
{
var proc = current.Parent;
int data_pgoffset;
byte[] page_signatures;
uint real_file_size;
var ret = NativeMethods.sfs_initialize_and_verify_metadata(new Pointer(header.Location), header.Length, size_on_disk,
out data_pgoffset, out real_file_size, out page_signatures);
var metadata_verified = ret == 0;
if (!metadata_verified)
{
Arch.Console.WriteLine("SFSINode::Failed to verify metadata");
p_ret = ret;
return(null);
}
var access_permission_checked = Globals.SecurityManager.CanAccessFile(current, header);
if (!access_permission_checked)
{
return(null);
}
var arch_inode = new Arch.ArchINode(linux_fd, (uint)size_on_disk, proc.helperPid);
Contract.Assert(metadata_verified && access_permission_checked);
var inode = new SecureFSInode(linux_fd, (uint)size_on_disk, proc.helperPid, real_file_size);
inode.DataPageOffset = data_pgoffset;
inode.Signatures = page_signatures;
return(inode);
}
private static ASCIIString[] CreateEnvpArrayWithWorkspace(ASCIIString[] envp, Process proc, int workspace_fd, uint workspace_size)
{
var res = new ASCIIString[envp.Length + 1];
for (int i = 0; i < envp.Length; ++i)
{
res[i] = envp[i];
}
var inode = new Arch.ArchINode(workspace_fd, workspace_size, proc.helperPid);
var file = new File(proc, inode, FileFlags.ReadOnly, 0);
var fd = proc.GetUnusedFd();
proc.InstallFd(fd, file);
var s = "ANDROID_PROPERTY_WORKSPACE=" + fd.ToString() + "," + workspace_size.ToString();
res[envp.Length] = new ASCIIString(s);
return(res);
}
private static ASCIIString[] CreateEnvpArrayWithWorkspace(ASCIIString[] envp, Process proc, int workspace_fd, uint workspace_size)
{
var res = new ASCIIString[envp.Length + 1];
for (int i = 0; i < envp.Length; ++i)
res[i] = envp[i];
var inode = new Arch.ArchINode(workspace_fd, workspace_size, proc.helperPid);
var file = new File(proc, inode, FileFlags.ReadOnly, 0);
var fd = proc.GetUnusedFd();
proc.InstallFd(fd, file);
var s = "ANDROID_PROPERTY_WORKSPACE=" + fd.ToString() + "," + workspace_size.ToString();
res[envp.Length] = new ASCIIString(s);
return res;
}
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;
}
public static int Pipe(Thread current, UserPtr pipeFd)
{
var proc = current.Parent;
var helperPid = proc.helperPid;
int fd0, fd1;
var ret = Arch.IPCStubs.Pipe(helperPid, out fd0, out fd1);
if (ret < 0)
return ret;
var inode1 = new Arch.ArchINode(fd0, 0, helperPid);
var inode2 = new Arch.ArchINode(fd1, 0, helperPid);
// XXX: are the permission settings correct?
var file1 = new File(proc, inode1, FileFlags.ReadWrite, 0);
var rfd0 = proc.GetUnusedFd();
proc.InstallFd(rfd0, file1);
var file2 = new File(proc, inode2, FileFlags.ReadWrite, 0);
var rfd1 = proc.GetUnusedFd();
proc.InstallFd(rfd1, file2);
//Arch.Console.Write("pipe: linux_fd [");
//Arch.Console.Write(fd0);
//Arch.Console.Write(",");
//Arch.Console.Write(fd1);
//Arch.Console.Write("] => [");
//Arch.Console.Write(rfd0);
//Arch.Console.Write(",");
//Arch.Console.Write(rfd1);
//Arch.Console.Write("], ret=");
//Arch.Console.Write(ret);
//Arch.Console.WriteLine();
if (pipeFd.Write(current, rfd0) != 0 || (pipeFd + sizeof(int)).Write(current, rfd1) != 0)
{
Arch.IPCStubs.Close(helperPid, fd0);
Arch.IPCStubs.Close(helperPid, fd1);
return -ErrorCode.EFAULT;
}
return ret;
}
