/*
* Load the credential for an application.
*
* Currently ExpressOS does not deal with key management, etc.
* It uses a static key for all application.
*/
internal static Credential GetCredential(ASCIIString name, Process process)
{
Contract.Ensures(Contract.Result <Credential>().GhostOwner == process);
var key = new byte[] { 0xc8, 0x43, 0xae, 0x85, 0x9b, 0x63, 0x4b, 0x72, 0x1b, 0x14, 0xcf, 0x6d, 0xa8, 0xf9, 0x6f, 0x1d };
// 1003 == AID_GRAPHICS
return(new Credential(process, 1003, key));
}
/*
* Load the credential for an application.
*
* Currently ExpressOS does not deal with key management, etc.
* It uses a static key for all application.
*/
internal static Credential GetCredential(ASCIIString name, Process process)
{
Contract.Ensures(Contract.Result<Credential>().GhostOwner == process);
var key = new byte[] { 0xc8, 0x43, 0xae, 0x85, 0x9b, 0x63, 0x4b, 0x72, 0x1b, 0x14, 0xcf, 0x6d, 0xa8, 0xf9, 0x6f, 0x1d };
// 1003 == AID_GRAPHICS
return new Credential(process, 1003, key);
}
public static int Parse(int helperPid, File file, Process proc, ref UserPtr stackTop)
{
Contract.Requires(file.GhostOwner == proc);
Contract.Requires(proc.Space.GhostOwner == proc);
var buf = new byte[Size];
uint pos = 0;
if (file.Read(buf, ref pos) != buf.Length)
return -ErrorCode.EINVAL;
var eh = Read(buf);
if (eh.type != ELF32Header.ELF_TYPE_EXECUTABLE || eh.ProgramHeaderOffest == 0)
return -ErrorCode.ENOEXEC;
proc.EntryPoint = eh.EntryPoint;
ELF32ProgramHeader ph = new ELF32ProgramHeader();
var ret = FindInterpreter(file, eh, ref ph);
if (ret == -ErrorCode.EINVAL)
{
Arch.Console.WriteLine("Malformed ELF file");
return ret;
}
else if (ret == 0)
{
var interpreterBuf = new byte[ph.FileSize];
pos = ph.offset;
if (file.Read(interpreterBuf, ref pos) != interpreterBuf.Length)
return -ErrorCode.EINVAL;
var interpreterName = new ASCIIString(interpreterBuf);
ErrorCode ec;
var interpreter_inode = Arch.ArchFS.Open(helperPid, interpreterName, 0, 0, out ec);
if (interpreter_inode == null)
return -ErrorCode.ENOENT;
var interpreter = new File(proc, interpreter_inode, FileFlags.ReadOnly, 0);
/*
* Parse the information of linker.
*
* This function will also override the entry point.
*/
if (Parse(helperPid, interpreter, proc, ref stackTop) != 0)
return -ErrorCode.EINVAL;
// So now let's copy the program header to the top of the stack, and push auxlirary vectors
PushProgramHeaderAndAuxliraryVectors(proc, file, eh, ref stackTop);
}
return MapInSegments(file, proc, eh);
}
internal Process(ASCIIString name, AndroidApplicationInfo appInfo)
{
Contract.Ensures(Credential.GhostOwner == this);
Contract.Ensures(Space.GhostOwner == this);
Contract.Ensures(Files.GhostOwner == this);
this.AppInfo = appInfo;
SFSFilePrefix = Util.StringToByteArray(appInfo.DataDir, false);
this.Files = new FileDescriptorTable(this);
const uint UTCB_BOTTOM = 0xc0000000;
var utcb = new Pointer(UTCB_BOTTOM);
// TODO: expose interface to change the name of the process
var archAddressSpace = Arch.ArchAddressSpace.Create(name, utcb,
Arch.ArchDefinition.UTCBSizeShift + Arch.ArchDefinition.MaxThreadPerTaskLog2);
this.Space = new AddressSpace(this, archAddressSpace);
this.Credential = SecurityManager.GetCredential(name, this);
}
internal Process(ASCIIString name, AndroidApplicationInfo appInfo)
{
Contract.Ensures(Credential.GhostOwner == this);
Contract.Ensures(Space.GhostOwner == this);
Contract.Ensures(Files.GhostOwner == this);
this.AppInfo = appInfo;
SFSFilePrefix = Util.StringToByteArray(appInfo.DataDir, false);
this.Files = new FileDescriptorTable(this);
const uint UTCB_BOTTOM = 0xc0000000;
var utcb = new Pointer(UTCB_BOTTOM);
// TODO: expose interface to change the name of the process
var archAddressSpace = Arch.ArchAddressSpace.Create(name, utcb,
Arch.ArchDefinition.UTCBSizeShift + Arch.ArchDefinition.MaxThreadPerTaskLog2);
this.Space = new AddressSpace(this, archAddressSpace);
this.Credential = SecurityManager.GetCredential(name, this);
}
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);
}
public static int Parse(int helperPid, File file, Process proc, ref UserPtr stackTop)
{
Contract.Requires(file.GhostOwner == proc);
Contract.Requires(proc.Space.GhostOwner == proc);
var buf = new byte[Size];
uint pos = 0;
if (file.Read(buf, ref pos) != buf.Length)
{
return(-ErrorCode.EINVAL);
}
var eh = Read(buf);
if (eh.type != ELF32Header.ELF_TYPE_EXECUTABLE || eh.ProgramHeaderOffest == 0)
{
return(-ErrorCode.ENOEXEC);
}
proc.EntryPoint = eh.EntryPoint;
ELF32ProgramHeader ph = new ELF32ProgramHeader();
var ret = FindInterpreter(file, eh, ref ph);
if (ret == -ErrorCode.EINVAL)
{
Arch.Console.WriteLine("Malformed ELF file");
return(ret);
}
else if (ret == 0)
{
var interpreterBuf = new byte[ph.FileSize];
pos = ph.offset;
if (file.Read(interpreterBuf, ref pos) != interpreterBuf.Length)
{
return(-ErrorCode.EINVAL);
}
var interpreterName = new ASCIIString(interpreterBuf);
ErrorCode ec;
var interpreter_inode = Arch.ArchFS.Open(helperPid, interpreterName, 0, 0, out ec);
if (interpreter_inode == null)
{
return(-ErrorCode.ENOENT);
}
var interpreter = new File(proc, interpreter_inode, FileFlags.ReadOnly, 0);
/*
* Parse the information of linker.
*
* This function will also override the entry point.
*/
if (Parse(helperPid, interpreter, proc, ref stackTop) != 0)
{
return(-ErrorCode.EINVAL);
}
// So now let's copy the program header to the top of the stack, and push auxlirary vectors
PushProgramHeaderAndAuxliraryVectors(proc, file, eh, ref stackTop);
}
return(MapInSegments(file, proc, eh));
}
//
// We do sync read for this one, since it's simpler..
//
public static Process CreateProcess(ASCIIString path, ASCIIString[] argv, ASCIIString[] envp, AndroidApplicationInfo appInfo)
{
var proc = new Process(path, appInfo);
Utils.Assert(!proc.Space.impl._value.isInvalid);
uint addr;
int workspace_fd;
uint workspace_size;
proc.helperPid = Arch.IPCStubs.linux_sys_take_helper(out addr, out workspace_fd, out workspace_size);
if (proc.helperPid < 0)
{
Arch.Console.WriteLine("CreateProcess: cannot get helper");
return null;
}
proc.ShadowBinderVMStart = addr;
ErrorCode ec;
var inode = Arch.ArchFS.Open(proc.helperPid, path, 0, 0, out ec);
if (inode == null)
{
Arch.Console.WriteLine("CreateProcess: cannot open file");
return null;
}
var stack_top = new UserPtr(INITIAL_STACK_LOCATION);
// 4M Initial stack
var stack_size = 4096 * Arch.ArchDefinition.PageSize;
proc.Space.AddStackMapping(stack_top, stack_size);
stack_top += stack_size;
var augmented_envp = CreateEnvpArrayWithWorkspace(envp, proc, workspace_fd, workspace_size);
var envp_ptr = PushCharArray(proc, augmented_envp, ref stack_top);
if (envp_ptr == null)
{
Arch.Console.WriteLine("CreateProcess: Push envp failed");
return null;
}
var argv_ptr = PushCharArray(proc, argv, ref stack_top);
if (argv_ptr == null)
{
Arch.Console.WriteLine("CreateProcess: Push argv failed");
return null;
}
stack_top = UserPtr.RoundDown(stack_top);
// Parse the ELF file, which might push additional info on to the stack
// (i.e., aux vectors when the ELF is dynamically linked)
var file = new File(proc, inode, FileFlags.ReadWrite, 0);
int ret = ELF32Header.Parse(proc.helperPid, file, proc, ref stack_top);
if (ret != 0)
{
Arch.Console.WriteLine("CreateProcess: Parse ELF file failed");
return null;
}
//%esp The stack contains the arguments and environment:
// 0(%esp) argc
// 4(%esp) argv[0]
// ...
// (4*argc)(%esp) NULL
// (4*(argc+1))(%esp) envp[0]
// ...
// NULL
if (PushArgumentPointers(proc, envp_ptr, ref stack_top) != 0)
return null;
if (PushArgumentPointers(proc, argv_ptr, ref stack_top) != 0)
return null;
if (PushInt(proc, argv_ptr.Length, ref stack_top) != 0)
return null;
// Stdio
var file_stdout = File.CreateStdout(proc);
Contract.Assume(proc.Files.IsAvailableFd(Process.STDOUT_FD));
proc.InstallFd(Process.STDOUT_FD, file_stdout);
var file_stderr = File.CreateStdout(proc);
Contract.Assume(proc.Files.IsAvailableFd(Process.STDERR_FD));
proc.InstallFd(Process.STDERR_FD, file_stderr);
var mainThread = Thread.Create(proc);
if (appInfo != null)
{
var p = appInfo.ToParcel();
Globals.LinuxIPCBuffer.CopyFrom(0, p);
Arch.IPCStubs.WriteAppInfo(proc.helperPid, p.Length);
}
// Start the main thread
mainThread.Start(new Pointer(proc.EntryPoint), stack_top.Value);
return proc;
}
private static UserPtr[] PushCharArray(Process proc, ASCIIString[] arr, ref UserPtr stack_top)
{
var res = new UserPtr[arr.Length];
for (int i = 0; i < arr.Length; ++i)
{
// Include the terminator
stack_top -= arr[i].Length + 1;
res[i] = stack_top;
if (stack_top.Write(proc, arr[i].GetByteString()) != 0)
return null;
}
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;
}
public const uint CLONE_IO = 0x80000000; /* Clone io context */
//
// We do sync read for this one, since it's simpler..
//
public static Process CreateProcess(ASCIIString path, ASCIIString[] argv, ASCIIString[] envp, AndroidApplicationInfo appInfo)
{
var proc = new Process(path, appInfo);
Utils.Assert(!proc.Space.impl._value.isInvalid);
uint addr;
int workspace_fd;
uint workspace_size;
proc.helperPid = Arch.IPCStubs.linux_sys_take_helper(out addr, out workspace_fd, out workspace_size);
if (proc.helperPid < 0)
{
Arch.Console.WriteLine("CreateProcess: cannot get helper");
return(null);
}
proc.ShadowBinderVMStart = addr;
ErrorCode ec;
var inode = Arch.ArchFS.Open(proc.helperPid, path, 0, 0, out ec);
if (inode == null)
{
Arch.Console.WriteLine("CreateProcess: cannot open file");
return(null);
}
var stack_top = new UserPtr(INITIAL_STACK_LOCATION);
// 4M Initial stack
var stack_size = 4096 * Arch.ArchDefinition.PageSize;
proc.Space.AddStackMapping(stack_top, stack_size);
stack_top += stack_size;
var augmented_envp = CreateEnvpArrayWithWorkspace(envp, proc, workspace_fd, workspace_size);
var envp_ptr = PushCharArray(proc, augmented_envp, ref stack_top);
if (envp_ptr == null)
{
Arch.Console.WriteLine("CreateProcess: Push envp failed");
return(null);
}
var argv_ptr = PushCharArray(proc, argv, ref stack_top);
if (argv_ptr == null)
{
Arch.Console.WriteLine("CreateProcess: Push argv failed");
return(null);
}
stack_top = UserPtr.RoundDown(stack_top);
// Parse the ELF file, which might push additional info on to the stack
// (i.e., aux vectors when the ELF is dynamically linked)
var file = new File(proc, inode, FileFlags.ReadWrite, 0);
int ret = ELF32Header.Parse(proc.helperPid, file, proc, ref stack_top);
if (ret != 0)
{
Arch.Console.WriteLine("CreateProcess: Parse ELF file failed");
return(null);
}
//%esp The stack contains the arguments and environment:
// 0(%esp) argc
// 4(%esp) argv[0]
// ...
// (4*argc)(%esp) NULL
// (4*(argc+1))(%esp) envp[0]
// ...
// NULL
if (PushArgumentPointers(proc, envp_ptr, ref stack_top) != 0)
{
return(null);
}
if (PushArgumentPointers(proc, argv_ptr, ref stack_top) != 0)
{
return(null);
}
if (PushInt(proc, argv_ptr.Length, ref stack_top) != 0)
{
return(null);
}
// Stdio
var file_stdout = File.CreateStdout(proc);
Contract.Assume(proc.Files.IsAvailableFd(Process.STDOUT_FD));
proc.InstallFd(Process.STDOUT_FD, file_stdout);
var file_stderr = File.CreateStdout(proc);
Contract.Assume(proc.Files.IsAvailableFd(Process.STDERR_FD));
proc.InstallFd(Process.STDERR_FD, file_stderr);
var mainThread = Thread.Create(proc);
if (appInfo != null)
{
var p = appInfo.ToParcel();
Globals.LinuxIPCBuffer.CopyFrom(0, p);
Arch.IPCStubs.WriteAppInfo(proc.helperPid, p.Length);
}
// Start the main thread
mainThread.Start(new Pointer(proc.EntryPoint), stack_top.Value);
return(proc);
}
public static void Initialize()
{
IPCFilename = new ASCIIString("/dev/binder");
AshmemFileName = new ASCIIString("/dev/ashmem");
CWDStr = new ASCIIString("/");
}
public static void Initialize()
{
IPCFilename = new ASCIIString("/dev/binder");
AshmemFileName = new ASCIIString("/dev/ashmem");
CWDStr = new ASCIIString("/");
}
public static void Start(ref BootParam param)
{
Console.WriteLine("Hello from ExpressOS-Managed");
ArchGlobals.Initialize(ref param);
Globals.Initialize(ref param);
SyscallProfiler.Initialize();
Misc.Initialize();
FileSystem.Initialize();
AESManaged.Initialize();
SHA1Managed.Initialize();
AndroidApplicationInfo appInfo = new AndroidApplicationInfo();
var appName = "me.haohui.expressos.browserbench";
appInfo.PackageName = appName;
appInfo.uid = 1002;
appInfo.flags = 0x8be45;
appInfo.SourceDir = "/system/app/BrowserBench.apk";
appInfo.DataDir = "/data/data/" + appName;
appInfo.Enabled = true;
appInfo.TargetSdkVersion = 10;
appInfo.Intent = appName + "/" + appName + ".BrowserActivity";
#if false
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/simple-hello"),
};
var envp = new ASCIIString[] {
//new ASCIIString("LD_PRELOAD=/system/lib/libr2.so"),
//new ASCIIString("HH_DEBUG=1"),
};
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/bench-sqlite"),
new ASCIIString("/data/data/com.valkyrie/1.db"),
};
var envp = new ASCIIString[] { };
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/bench-bootanim"),
};
var envp = new ASCIIString[] {
new ASCIIString("CLASSPATH=/system/framework/am.jar"),
new ASCIIString("PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin"),
new ASCIIString("LD_LIBRARY_PATH=/vendor/lib:/system/lib"),
new ASCIIString("ANDROID_BOOTLOGO=1"),
new ASCIIString("ANDROID_ROOT=/system"),
new ASCIIString("ANDROID_ASSETS=/system/app"),
new ASCIIString("ANDROID_DATA=/data"),
new ASCIIString("EXTERNAL_STORAGE=/mnt/sdcard"),
new ASCIIString("ASEC_MOUNTPOINT=/mnt/asec"),
new ASCIIString("LOOP_MOUNTPOINT=/mnt/obb"),
new ASCIIString("BOOTCLASSPATH=/system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar"),
// new ASCIIString("LD_PRELOAD=/system/lib/libr2.so"),
};
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/data/presenter"),
};
var envp = new ASCIIString[] {
new ASCIIString("CLASSPATH=/system/framework/am.jar"),
new ASCIIString("PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin"),
new ASCIIString("LD_LIBRARY_PATH=/vendor/lib:/system/lib"),
new ASCIIString("ANDROID_BOOTLOGO=1"),
new ASCIIString("ANDROID_ROOT=/system"),
new ASCIIString("ANDROID_ASSETS=/system/app"),
new ASCIIString("ANDROID_DATA=/data"),
new ASCIIString("EXTERNAL_STORAGE=/mnt/sdcard"),
new ASCIIString("ASEC_MOUNTPOINT=/mnt/asec"),
new ASCIIString("LOOP_MOUNTPOINT=/mnt/obb"),
new ASCIIString("BOOTCLASSPATH=/system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar"),
new ASCIIString("SLIDES=/data/slides.zip"),
};
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/bench-vbinder"),
};
var envp = new ASCIIString[] { };
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/system/xbin/wget"),
new ASCIIString("http://128.174.236.238"),
};
var envp = new ASCIIString[] {
};
#elif false
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/app_process"),
new ASCIIString("/system/bin"),
new ASCIIString("com.android.commands.am.Am"),
new ASCIIString("start"),
new ASCIIString("-a"),
new ASCIIString("android.intent.action.MAIN"),
new ASCIIString("-n"),
new ASCIIString("com.valkyrie/com.valkyrie.HelloAndroidActivity"),
};
var envp = new ASCIIString[] {
new ASCIIString("CLASSPATH=/system/framework/am.jar"),
new ASCIIString("PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin"),
new ASCIIString("LD_LIBRARY_PATH=/vendor/lib:/system/lib"),
new ASCIIString("ANDROID_BOOTLOGO=1"),
new ASCIIString("ANDROID_ROOT=/system"),
new ASCIIString("ANDROID_ASSETS=/system/app"),
new ASCIIString("ANDROID_DATA=/data"),
new ASCIIString("EXTERNAL_STORAGE=/mnt/sdcard"),
new ASCIIString("ASEC_MOUNTPOINT=/mnt/asec"),
new ASCIIString("LOOP_MOUNTPOINT=/mnt/obb"),
new ASCIIString("BOOTCLASSPATH=/system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar"),
/*new ASCIIString("HH_DEBUG=1"), */
};
#elif true
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/app_process"),
new ASCIIString("/system/bin"),
new ASCIIString("android.app.ActivityThread"),
};
var envp = new ASCIIString[] {
new ASCIIString("CLASSPATH=/system/framework/am.jar"),
new ASCIIString("PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin"),
new ASCIIString("LD_LIBRARY_PATH=/vendor/lib:/system/lib"),
new ASCIIString("ANDROID_BOOTLOGO=1"),
new ASCIIString("ANDROID_ROOT=/system"),
new ASCIIString("ANDROID_ASSETS=/system/app"),
new ASCIIString("ANDROID_DATA=/data"),
new ASCIIString("EXTERNAL_STORAGE=/mnt/sdcard"),
new ASCIIString("ASEC_MOUNTPOINT=/mnt/asec"),
new ASCIIString("LOOP_MOUNTPOINT=/mnt/obb"),
new ASCIIString("BOOTCLASSPATH=/system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar"),
new ASCIIString("HH_DEBUG=1"),
/* new ASCIIString("LD_PRELOAD=/libr2.so"), */
};
#else
var argv = new ASCIIString[] {
new ASCIIString("/system/bin/app_process"),
new ASCIIString("-Xgc:preverify"),
new ASCIIString("-Xgc:postverify"),
new ASCIIString("-Xgc:verifycardtable"),
new ASCIIString("/system/bin"),
new ASCIIString("android.os.GcTests"),
};
var envp = new ASCIIString[] {
new ASCIIString("CLASSPATH=/system/framework/frameworkcoretests.jar"),
new ASCIIString("PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin"),
new ASCIIString("LD_LIBRARY_PATH=/vendor/lib:/system/lib"),
new ASCIIString("ANDROID_BOOTLOGO=1"),
new ASCIIString("ANDROID_ROOT=/system"),
new ASCIIString("ANDROID_ASSETS=/system/app"),
new ASCIIString("ANDROID_DATA=/data"),
new ASCIIString("EXTERNAL_STORAGE=/mnt/sdcard"),
new ASCIIString("ASEC_MOUNTPOINT=/mnt/asec"),
new ASCIIString("LOOP_MOUNTPOINT=/mnt/obb"),
new ASCIIString("BOOTCLASSPATH=/system/framework/core.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar"),
new ASCIIString("HH_DEBUG=1"),
//new ASCIIString("LD_PRELOAD=/libr2.so"),
};
#endif
var proc = ExpressOS.Kernel.Exec.CreateProcess(argv[0], argv, envp, appInfo);
if (proc == null)
Console.WriteLine("Cannot start init");
Globals.SecurityManager.OnActiveProcessChanged(proc);
Console.WriteLine("ExpressOS initialized");
Looper.ServerLoop();
}