[reactos] 01/02: [NTOS:KD] Merge initialization phases 1 and 2, and fix log file debugging

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=58332b076c7ae20fd3286…

commit 58332b076c7ae20fd328690dc7631b78786ba12b
Author:     Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Mon Feb 15 23:20:15 2021 +0100
Commit:     Hervé Poussineau <hpoussin(a)reactos.org>
CommitDate: Tue Feb 16 00:12:25 2021 +0100

    [NTOS:KD] Merge initialization phases 1 and 2, and fix log file debugging
    
    Phase 2 and 3 were not done anymore since 777a2d94da285f9ab612680ebb9f5d412b74fb68.
    
    Fix that, by merging phases 1 and 2, and by calling phase 3 later
    for log file debugging, when ExpInitializationPhase = 3
    
    CORE-17470
---
 ntoskrnl/kd/kdio.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/ntoskrnl/kd/kdio.c b/ntoskrnl/kd/kdio.c
index c1b01dec20b..288977bebbc 100644
--- a/ntoskrnl/kd/kdio.c
+++ b/ntoskrnl/kd/kdio.c
@@ -19,6 +19,7 @@
 
 #define KdpBufferSize  (1024 * 512)
 static BOOLEAN KdpLoggingEnabled = FALSE;
+static BOOLEAN KdpLoggingStarting = FALSE;
 static PCHAR KdpDebugBuffer = NULL;
 static volatile ULONG KdpCurrentPosition = 0;
 static volatile ULONG KdpFreeBytes = 0;
@@ -26,6 +27,7 @@ static KSPIN_LOCK KdpDebugLogSpinLock;
 static KEVENT KdpLoggerThreadEvent;
 static HANDLE KdpLogFileHandle;
 ANSI_STRING KdpLogFileName = RTL_CONSTANT_STRING("\\SystemRoot\\debug.log");
+extern ULONG ExpInitializationPhase;
 
 static KSPIN_LOCK KdpSerialSpinLock;
 ULONG  SerialPortNumber = DEFAULT_DEBUG_PORT;
@@ -155,6 +157,7 @@ KdpPrintToLogFile(PCHAR String,
 {
     KIRQL OldIrql;
     ULONG beg, end, num;
+    BOOLEAN DoReinit = FALSE;
 
     if (KdpDebugBuffer == NULL) return;
 
@@ -184,8 +187,18 @@ KdpPrintToLogFile(PCHAR String,
     }
 
     /* Release the spinlock */
+    if (OldIrql == PASSIVE_LEVEL && !KdpLoggingStarting &&
!KdpLoggingEnabled && ExpInitializationPhase >= 2)
+    {
+        DoReinit = TRUE;
+    }
     KdpReleaseLock(&KdpDebugLogSpinLock, OldIrql);
 
+    if (DoReinit)
+    {
+        KdpLoggingStarting = TRUE;
+        KdpDebugLogInit(NULL, 3);
+    }
+
     /* Signal the logger thread */
     if (OldIrql <= DISPATCH_LEVEL && KdpLoggingEnabled)
         KeSetEvent(&KdpLoggerThreadEvent, IO_NO_INCREMENT, FALSE);
@@ -224,9 +237,7 @@ KdpDebugLogInit(PKD_DISPATCH_TABLE DispatchTable,
 
         /* Initialize spinlock */
         KeInitializeSpinLock(&KdpDebugLogSpinLock);
-    }
-    else if (BootPhase == 2)
-    {
+
         HalDisplayString("\r\n   File log debugging enabled\r\n\r\n");
     }
     else if (BootPhase == 3)
@@ -338,7 +349,7 @@ KdpSerialInit(PKD_DISPATCH_TABLE DispatchTable,
         /* Register as a Provider */
         InsertTailList(&KdProviders, &DispatchTable->KdProvidersList);
     }
-    else if (BootPhase == 2)
+    else if (BootPhase == 1)
     {
         HalDisplayString("\r\n   Serial debugging enabled\r\n\r\n");
     }
@@ -508,9 +519,7 @@ KdpScreenInit(PKD_DISPATCH_TABLE DispatchTable,
 
         /* Initialize spinlock */
         KeInitializeSpinLock(&KdpDmesgLogSpinLock);
-    }
-    else if (BootPhase == 2)
-    {
+
         HalDisplayString("\r\n   Screen debugging enabled\r\n\r\n");
     }
 }