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83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
//
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// Copyright (C) Microsoft. All rights reserved.
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//
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#ifndef __FXIFRKM_H__
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#define __FXIFRKM_H__
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#define FX_IFR_MAX_BUFFER_SIZE (0x10000) // 64k
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#if (PAGE_SIZE > 0x1000)
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#define FX_IFR_AVG_BUFFER_SIZE (3 * PAGE_SIZE) // ia64
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#else
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#define FX_IFR_AVG_BUFFER_SIZE (5 * PAGE_SIZE) // x86, amd64
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#endif
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//
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// Log Size should be in whole pages.
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//
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enum FxIFRValues {
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FxIFRMinLogPages = 1,
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FxIFRMaxLogPages = FX_IFR_MAX_BUFFER_SIZE/PAGE_SIZE,
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FxIFRAvgLogPages = FX_IFR_AVG_BUFFER_SIZE/PAGE_SIZE,
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FxIFRMinLogSize = FxIFRMinLogPages * PAGE_SIZE,
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FxIFRMaxLogSize = FxIFRMaxLogPages * PAGE_SIZE,
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FxIFRAvgLogSize = FxIFRAvgLogPages * PAGE_SIZE,
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FxIFRMaxMessageSize = 256,
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FxIFRRecordSignature = WDF_IFR_RECORD_SIGNATURE,
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};
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//
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// Verify the following:
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// - max_log_size must be <= 64k.
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// - min_log_size must be >= page_size.
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// - max_log_size >= avg_log_size >= min_log_size.
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// - max_log_pages >= avg_log_pages >= min_log_pages.
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//
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C_ASSERT(FxIFRMaxLogSize <= 0x10000);
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C_ASSERT(FxIFRMinLogSize >= PAGE_SIZE);
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C_ASSERT(FxIFRMaxLogSize >= FxIFRAvgLogSize &&
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FxIFRAvgLogSize >= FxIFRMinLogSize);
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C_ASSERT(FxIFRMaxLogPages >= FxIFRAvgLogPages &&
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FxIFRAvgLogPages >= FxIFRMinLogPages);
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__inline
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VOID
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FxVerifyLogHeader(
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__in PFX_DRIVER_GLOBALS FxDriverGlobals,
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__in PWDF_IFR_HEADER Header
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)
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/*++
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Routine Description:
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This routine is added to track the down IFR header corruption
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--*/
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{
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WDFCASSERT(WDF_IFR_HEADER_NAME_LEN == WDF_DRIVER_GLOBALS_NAME_LEN);
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if (FxDriverGlobals->FxVerifierOn
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&&
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(strncmp(Header->DriverName, FxDriverGlobals->Public.DriverName,
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WDF_IFR_HEADER_NAME_LEN) != 0
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FxIsEqualGuid((LPGUID)&(Header->Guid), (LPGUID)&WdfTraceGuid) == FALSE
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Header->Base != (PUCHAR) &Header[1]
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Header->Offset.u.s.Current > Header->Size
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Header->Offset.u.s.Previous > Header->Size
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Header->Size >= FxIFRMaxLogSize)) // size doesn't include header.
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{
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FxVerifierDbgBreakPoint(FxDriverGlobals);
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}
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}
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#endif // __FXIFRKM_H__
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