Prior to Windows 7, the undocumented NtQuerySystemInformation API did
not return valid handle information when called by a WOW64 process. To
work around this problem, the 32-bit test program connects to a 64-bit
worker and uses the existing RPC mechanism, issuing LookupKernelObject
commands, which call NtQuerySystemInformation in a native 64-bit
environment.
Even on Windows 7, the NtQuerySystemInformation API returns truncated
kernel object pointers, so, AFAIK, we still need to do this work. Maybe
not, though, if the lower 32 bits are guaranteed to be unique.
On Windows 10, there is a CompareObjectHandles API that works in WOW64
mode.
It seems that this bug was fixed in WOW64 prior to its fixing in the
normal environment.
It makes no sense to run Test_CreateProcess_Duplicate_PseudoHandleBug_IL
on OS's that don't have inherit lists.
I don't *think* this changes the semantics at all.
Also, move the INVALID_HANDLE_VALUE thing into a note at the bottom.
Improve intra-document bug linking.
* The NULL-to-new-handle conversion only happens when creating a new
console, not when attaching to the parent's console.
* Also, Windows reports that the handle value 0x7 is value, presumably
because it ignores the lowest 2 bits. It's better to just remove those
values from this test.
There's just one test, and it iterates over these combinations:
- CreationConsoleMode=NewConsole and CreationConsoleMode=Inherit
- bInheritHandles=FALSE and bInheritHandles=TRUE
It takes several seconds to run, but that's OK.
* CompareObjectHandles is a documented API, and presumably it could be
faster. The tests actually do run a little faster now on Win10,
dropping from 6.5sec to 3.6sec or so.
* Also make the NtQuerySystemInformation buffer static so we don't have to
repeat the double-buffer-in-a-loop process on every ntHandlePointer
call.
* The read end of a pipe is translated to NULL by the special
bInheritHandles=FALSE, no-STARTF_USESTDHANDLES inheritance mode. The
write end of the pipe works fine.
* Passing bInheritHandles=TRUE with an inheritable pipe handle fixes it.
Adding STARTF_USESTDHANDLES to this also works.
* To version detect 8.1, we need GetVersionEx to return something greater
than Windows 8, which requires creating an app manifest. For now at
least, put the manifest XML next to the EXE. It can be built into the
EXE, but this is good enough (at least for now).
* Add Test_CreateProcess_SpecialInherit
* Add traditional Test_HandleDuplication
* Make handle.dup() use a GetCurrentProcess() target while
handle.dup(handle.worker()) uses a non-pseudo handle.
* Allow creating a RemoteWorker object without spawning a new worker.
It can be used like so:
{
Worker w(Worker::DoNotSpawn);
if (...) {
w = ...;
} else {
w = ...;
}
}
* Remove the weird RemoteWorker(std::string) ctor. The computation of the
worker name should be inside the ctor.
* It now becomes possible to initialize a RemoteWorker using syntax like:
Worker w({ true, 0 });
However, these are still ambiguous:
Worker w({}) // could be move-init from a default-init Worker
Worker w({1}) // could be move-init from a Worker(SpawnParams{1})
* Make the Event ctor explicit. The SpawnParams ctor needs to be
non-explicit so it can be used with the braced initializer list.
* Add Test_Active_ScreenBuffer_Order
* Add Test_GetStdHandle_SetStdHandle
* Also test a STARTF_USESTDHANDLES process in
Test_Detach_Does_Not_Change_Standard_Handles.
* Test combos of CREATE_NEW_CONSOLE, DETACHED_PROCESS, CREATE_NO_WINDOW.
* Test use of PROC_THREAD_ATTRIBUTE_HANDLE_LIST. It cannot be used with
GetCurrentProcess(), but it also can't be used with traditional
console handles.
* Prefer nullptr over INVALID_HANDLE_VALUE. Change ntHandlePointer.
* Also add a public Worker::exit() for killing workers more conveniently.
* Previously, a Worker was either:
(1) fully initialized and running (m_valid==true), or
(2) moved out of (m_valid==false)
Now RemoteWorker::trySpawn() can return an invalid RemoteWorker object.
