[ros-diffs] [reactos] 03/04: [SMSS] Implement SmpStartCsr

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=735d2b4c93fc29d92c3de…

commit 735d2b4c93fc29d92c3de543c4e0a62fd380deca
Author:     Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Mon May 24 11:50:16 2021 +0200
Commit:     Hervé Poussineau <hpoussin(a)reactos.org>
CommitDate: Tue May 25 18:48:16 2021 +0200

    [SMSS] Implement SmpStartCsr
---
 base/system/smss/smloop.c | 40 ++++++++++++++++++++++++++++++++++++++--
 base/system/smss/smss.h   |  7 +++++++
 2 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/base/system/smss/smloop.c b/base/system/smss/smloop.c
index ff5067a44ad..d44b6f026bc 100644
--- a/base/system/smss/smloop.c
+++ b/base/system/smss/smloop.c
@@ -153,8 +153,44 @@ SmpStartCsr(IN PSM_API_MSG SmApiMsg,
             IN PSMP_CLIENT_CONTEXT ClientContext,
             IN HANDLE SmApiPort)
 {
-    DPRINT1("%s is not yet implemented\n", __FUNCTION__);
-    return STATUS_NOT_IMPLEMENTED;
+    PSM_START_CSR_MSG SmStartCsr = &SmApiMsg->u.StartCsr;
+    UNICODE_STRING InitialCommand;
+    HANDLE InitialCommandProcess, InitialCommandProcessId, WindowsSubSysProcessId;
+    NTSTATUS Status;
+
+    Status = SmpLoadSubSystemsForMuSession(&SmStartCsr->MuSessionId,
+                                           &WindowsSubSysProcessId,
+                                           &InitialCommand);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("SMSS: SmpLoadSubSystemsForMuSession failed with status
0x%08x\n", Status);
+        return Status;
+    }
+
+    if (SmStartCsr->Length)
+    {
+        InitialCommand.Length = InitialCommand.MaximumLength = SmStartCsr->Length;
+        InitialCommand.Buffer = SmStartCsr->Buffer;
+    }
+
+    Status = SmpExecuteInitialCommand(SmStartCsr->MuSessionId,
+                                      &InitialCommand,
+                                      &InitialCommandProcess,
+                                      &InitialCommandProcessId);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("SMSS: SmpExecuteInitialCommand failed with status 0x%08x\n",
Status);
+        /* FIXME: undo effects of SmpLoadSubSystemsForMuSession */
+        ASSERT(FALSE);
+        return Status;
+    }
+
+    NtClose(InitialCommandProcess);
+
+    SmStartCsr->WindowsSubSysProcessId = WindowsSubSysProcessId;
+    SmStartCsr->SmpInitialCommandProcessId = InitialCommandProcessId;
+
+    return STATUS_SUCCESS;
 }
 
 NTSTATUS
diff --git a/base/system/smss/smss.h b/base/system/smss/smss.h
index c59ecfff605..7b2ad99e670 100644
--- a/base/system/smss/smss.h
+++ b/base/system/smss/smss.h
@@ -289,6 +289,13 @@ SmpCheckDuplicateMuSessionId(
     IN ULONG MuSessionId
 );
 
+NTSTATUS
+NTAPI
+SmpExecuteInitialCommand(IN ULONG MuSessionId,
+                         IN PUNICODE_STRING InitialCommand,
+                         IN HANDLE InitialCommandProcess,
+                         OUT PHANDLE ReturnPid);
+
 NTSTATUS
 NTAPI
 SmpExecuteImage(