178 lines
4 KiB
C
178 lines
4 KiB
C
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/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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remlock.c
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Abstract:
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This is the NT SCSI port driver.
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Authors:
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Peter Wieland
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Kenneth Ray
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Environment:
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kernel mode only
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Notes:
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This module is a driver dll for scsi miniports.
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Revision History:
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--*/
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#include "precomp.h"
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//#include <nt.h>
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//#include <ntos.h>
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//#include <io.h>
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//
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// From remlock.h
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//
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#define IO_REMOVE_LOCK_SIG 'COLR'
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/*
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typedef struct FULL_REMOVE_LOCK {
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IO_REMOVE_LOCK_COMMON_BLOCK Common;
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IO_REMOVE_LOCK_DBG_BLOCK Dbg;
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} FULL_REMOVE_LOCK;
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*/
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typedef union _REMLOCK_FLAGS {
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struct {
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ULONG Checked: 1;
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ULONG Filler: 31;
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};
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ULONG Raw;
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} REMLOCK_FLAGS;
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DECLARE_API ( remlock )
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/*++
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Routine Description:
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Dump a remove lock structure
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--*/
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{
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ULONG64 memLoc=0;
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UCHAR buffer[256];
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ULONG result;
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ULONG64 blockLoc;
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UCHAR allocateTag[8];
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REMLOCK_FLAGS flags;
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// FULL_REMOVE_LOCK fullLock;
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// IO_REMOVE_LOCK_DBG_BLOCK dbgLock;
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// IO_REMOVE_LOCK_COMMON_BLOCK commonLock;
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// IO_REMOVE_LOCK_TRACKING_BLOCK block;
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ULONG64 pDbgLock;
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ULONG64 pCommonLock;
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ULONG64 pBlock;
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ULONG IoCount, Removed, Signature;
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buffer[0] = '\0';
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if (!*args) {
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memLoc = EXPRLastDump;
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} else {
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if (GetExpressionEx(args, &memLoc, &args)) {
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strcpy(buffer, args);
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}
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}
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flags.Raw = 0;
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if ('\0' != buffer[0]) {
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flags.Raw = (ULONG) GetExpression(buffer);
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}
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dprintf ("Dump Remove Lock: %I64x %x ", memLoc, flags.Raw);
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if (flags.Checked) {
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ULONG Sz = GetTypeSize("IO_REMOVE_LOCK_COMMON_BLOCK");
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dprintf ("as Checked\n");
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pCommonLock = memLoc; pDbgLock = memLoc + Sz;
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if (GetFieldValue (pCommonLock, "IO_REMOVE_LOCK_COMMON_BLOCK",
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"Removed", Removed) ||
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GetFieldValue (pDbgLock, "IO_REMOVE_LOCK_DBG_BLOCK",
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"Signature", Signature)) {
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dprintf ("Could not read memLock extension\n");
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return E_INVALIDARG;
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}
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if (IO_REMOVE_LOCK_SIG != Signature) {
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dprintf ("Signature does not match that of a remove lock\n");
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return E_INVALIDARG;
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}
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} else {
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dprintf ("as Free\n");
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pCommonLock = memLoc;
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if (GetFieldValue (memLoc, "IO_REMOVE_LOCK_COMMON_BLOCK",
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"Removed", Removed)) {
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dprintf ("Could not read memLock extension\n");
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return E_INVALIDARG;
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}
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}
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GetFieldValue (pCommonLock, "IO_REMOVE_LOCK_COMMON_BLOCK", "IoCount", IoCount);
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dprintf ("IsRemoved %x, IoCount %x\n", Removed, IoCount);
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if (flags.Checked) { // checked
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SYM_DUMP_PARAM sym = { 0 };
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sym.sName = (PUCHAR) "PCHAR";
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sym.size = sizeof(sym);
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InitTypeRead(pDbgLock, IO_REMOVE_LOCK_DBG_BLOCK);
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allocateTag [4] = '\0';
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* (PULONG) allocateTag = (ULONG) ReadField(AllocateTag);
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dprintf ("HighWatermark %x, MaxLockedTicks %I64x, AllocateTag %s \n",
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(ULONG) ReadField(HighWatermark),
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ReadField(MaxLockedTicks),
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allocateTag);
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blockLoc = ReadField(Blocks);
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while (blockLoc) {
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ULONG offset = 0;
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InitTypeRead(blockLoc, _IO_REMOVE_LOCK_TRACKING_BLOCK);
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dprintf ("Block Tag %p Line %d TimeLock %I64d\n",
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ReadField(Tag),
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(ULONG) ReadField(Line),
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ReadField(TimeLocked));
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//
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// Using ReadField(File) returns the wrong pointer. I need a pointer
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// to the pointer value, so we must use the field offset
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//
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if (!GetFieldOffset("_IO_REMOVE_LOCK_TRACKING_BLOCK", "File", &offset)) {
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dprintf(" File ");
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sym.addr = blockLoc + offset;
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Ioctl(IG_DUMP_SYMBOL_INFO, &sym, sym.size);
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}
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blockLoc = ReadField(Link);
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}
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}
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return S_OK;
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}
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