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workaround for wintar zero bytes in text files bug
Posted by Anonymous on Wed 18th Dec 2024 10:13
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modification of post by Anonymous (view diff)

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diff --git a/build.vc19/nfs41_driver/nfs41_driver.vcxproj b/build.vc19/nfs41_driver/nfs41_driver.vcxproj index 0affe23..9c55630 100644 --- a/build.vc19/nfs41_driver/nfs41_driver.vcxproj +++ b/build.vc19/nfs41_driver/nfs41_driver.vcxproj @@ -144,7 +144,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> </ItemDefinitionGroup> <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'"> @@ -158,7 +158,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> </ItemDefinitionGroup> <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'"> @@ -172,7 +172,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> <DriverSign> <FileDigestAlgorithm>sha256</FileDigestAlgorithm> @@ -189,7 +189,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> <DriverSign> <FileDigestAlgorithm>sha256</FileDigestAlgorithm> @@ -206,7 +206,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> </ItemDefinitionGroup> <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM'"> @@ -220,7 +220,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> </ItemDefinitionGroup> <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'"> @@ -234,7 +234,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> <DriverSign> <FileDigestAlgorithm>sha256</FileDigestAlgorithm> @@ -251,7 +251,7 @@ <AdditionalOptions>/std:c17 /Zc:preprocessor- /kernel /wd4100 /wd4201 /wd5104</AdditionalOptions> </ClCompile> <Link> - <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib</AdditionalDependencies> + <AdditionalDependencies>$(DDK_LIB_PATH)\ntoskrnl.lib;$(DDK_LIB_PATH)\hal.lib;$(DDK_LIB_PATH)\BufferOverflowfastfailK.lib;$(DDK_LIB_PATH)\ksecdd.lib;$(DDK_LIB_PATH)\rxce.lib;$(DDK_LIB_PATH)\rdbsslib.lib;$(DDK_LIB_PATH)\tdi.lib</AdditionalDependencies> </Link> <DriverSign> <FileDigestAlgorithm>sha256</FileDigestAlgorithm> diff --git a/sys/nfs41sys_driver.h b/sys/nfs41sys_driver.h index 1c39ab6..0e0107c 100644 --- a/sys/nfs41sys_driver.h +++ b/sys/nfs41sys_driver.h @@ -48,8 +48,10 @@ (POOL_FLAG_UNINITIALIZED|POOL_FLAG_CACHE_ALIGNED) #define RxAllocatePoolWithTag(rxallocpool, numbytes, tag) \ - ExAllocatePool2(((((rxallocpool) == NonPagedPoolNx)? \ - POOL_FLAG_NON_PAGED:POOL_FLAG_NON_PAGED_EXECUTE) | \ + ExAllocatePool2((( \ + ((rxallocpool) == PagedPool)?POOL_FLAG_PAGED: \ + (((rxallocpool) == NonPagedPoolNx)? \ + POOL_FLAG_NON_PAGED:POOL_FLAG_NON_PAGED_EXECUTE)) | \ RXALLOCATEPOOL_DEFAULT_ALLOCATEPOOL2FLAGS), \ (numbytes), (tag)) #endif /* EXALLOCATEPOOLWITHTAG_DEPRECATED */ diff --git a/sys/nfs41sys_readwrite.c b/sys/nfs41sys_readwrite.c index 050819c..a70ead2 100644 --- a/sys/nfs41sys_readwrite.c +++ b/sys/nfs41sys_readwrite.c @@ -58,6 +58,8 @@ #include <winerror.h> #include <Ntstrsafe.h> +#include <stdbool.h> +#include <tdikrnl.h> #include "nfs41sys_buildconfig.h" @@ -333,7 +335,7 @@ NTSTATUS nfs41_Write( IN OUT PRX_CONTEXT RxContext) { NTSTATUS status = STATUS_INSUFFICIENT_RESOURCES; - nfs41_updowncall_entry *entry; + nfs41_updowncall_entry *entry = NULL; BOOLEAN async = FALSE; PLOWIO_CONTEXT LowIoContext = &RxContext->LowIoContext; __notnull PMRX_SRV_OPEN SrvOpen = RxContext->pRelevantSrvOpen; @@ -344,6 +346,11 @@ NTSTATUS nfs41_Write( __notnull PNFS41_FCB nfs41_fcb = NFS41GetFcbExtension(RxContext->pFcb); __notnull PNFS41_FOBX nfs41_fobx = NFS41GetFobxExtension(RxContext->pFobx); DWORD io_delay; +#if 1 + void *userbuffer_mem = NULL; + PMDL userbuffer_mdl = NULL; +// PVOID UserBuffer = NULL; +#endif #ifdef ENABLE_TIMINGS LARGE_INTEGER t1, t2; t1 = KeQueryPerformanceCounter(NULL); @@ -362,9 +369,151 @@ NTSTATUS nfs41_Write( pNetRootContext->nfs41d_version, SrvOpen->pAlreadyPrefixedName, &entry); if (status) goto out; +#if 1 + ULONG padded_readwrite_bytecount = LowIoContext->ParamsFor.ReadWrite.ByteCount + (8192) /* fixme */; + +#if 1 + userbuffer_mem = ExAllocatePool2(POOL_FLAG_PAGED, padded_readwrite_bytecount, NFS41_MM_POOLTAG_DOWN); +#else + userbuffer_mem = RxAllocatePoolWithTag(NonPagedPoolNx, + padded_readwrite_bytecount, + NFS41_MM_POOLTAG_DOWN); +#endif + if (userbuffer_mem == NULL) { + status = STATUS_NO_MEMORY; + goto out; + } + + RtlZeroMemory(userbuffer_mem, padded_readwrite_bytecount); +#if 0 + UserBuffer = RxLowIoGetBufferAddress(RxContext); + if (UserBuffer == NULL) { + status = STATUS_NO_MEMORY; + goto out; + } +#endif + userbuffer_mdl = IoAllocateMdl(userbuffer_mem, + padded_readwrite_bytecount, + FALSE, FALSE, NULL); + if (userbuffer_mdl == NULL) { + status = STATUS_NO_MEMORY; + goto out; + } + +#if 1 +#pragma warning( push ) +/* + * C28145: "The opaque MDL structure should not be modified by a + * driver.", |MDL_MAPPING_CAN_FAIL| is the exception + */ +#pragma warning (disable : 28145) + userbuffer_mdl->MdlFlags |= MDL_MAPPING_CAN_FAIL; +#pragma warning( pop ) +#endif + + MmProbeAndLockPages(userbuffer_mdl, KernelMode, IoModifyAccess); + +#if 1 + +#if 1 + PVOID Src; + + if ((Src = MmGetSystemAddressForMdlSafe(LowIoContext->ParamsFor.ReadWrite.Buffer, NormalPagePriority)) == NULL) { + return STATUS_INSUFFICIENT_RESOURCES; + } + + ULONG mdl_bytecount = MmGetMdlByteCount(LowIoContext->ParamsFor.ReadWrite.Buffer); + + if (mdl_bytecount < LowIoContext->ParamsFor.ReadWrite.ByteCount) { + DbgP("#### ERROR: mdl_bytecount(=%lld) < LowIoContext->ParamsFor.ReadWrite.ByteCount(=%lld)\n", + (long long)mdl_bytecount, + (long long)LowIoContext->ParamsFor.ReadWrite.ByteCount); + DbgP("ReadWrite.Buffer=(Next=0x%p, Size=%ld, MdlFlags=0x%lx, " + "Process=0x%p, MappedSystemVa=0x%p, StartVa=0x%p, " + "ByteCount=%ld, ByteOffset=%ld)\n", + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->Next, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->Size, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->MdlFlags, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->Process, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->MappedSystemVa, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->StartVa, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->ByteCount, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->ByteOffset); + return STATUS_INTERNAL_ERROR; + } + +#if 1 + volatile char *cp_dest = userbuffer_mem; + volatile char *cp_src = ((char *)Src)+LowIoContext->ParamsFor.ReadWrite.ByteOffset; + volatile char tmpbyte; + + long long cp_i; + + long long cp_max = LowIoContext->ParamsFor.ReadWrite.ByteCount; + + if (LowIoContext->ParamsFor.ReadWrite.ByteOffset) + cp_max--; + + for (cp_i = 0 ; cp_i < cp_max ; cp_i++) { + tmpbyte = *cp_src++; + + *cp_dest++ = tmpbyte; + } +#else + (void)RtlCopyMemory(userbuffer_mem, + ((char *)Src)+LowIoContext->ParamsFor.ReadWrite.ByteOffset, + LowIoContext->ParamsFor.ReadWrite.ByteCount); +#endif +#else + ULONG bytescopied = 0UL; + NTSTATUS tdi_status; + + tdi_status = TdiCopyMdlToBuffer(LowIoContext->ParamsFor.ReadWrite.Buffer, + (ULONG)LowIoContext->ParamsFor.ReadWrite.ByteOffset /* fixme: Add assert LONGLONG2ULONG cast */, + userbuffer_mem, + 0, + LowIoContext->ParamsFor.ReadWrite.ByteCount+1, + &bytescopied); + + if (((tdi_status != STATUS_SUCCESS) && (tdi_status != STATUS_BUFFER_OVERFLOW)) || + (bytescopied != LowIoContext->ParamsFor.ReadWrite.ByteCount)) { + DbgP("#### ERROR: tdi_status=0x%lx || (bytescopied(=%lld) != ReadWrite.ByteCount(=%lld))\n", + (long)tdi_status, + (long long)bytescopied, + (long long)LowIoContext->ParamsFor.ReadWrite.ByteCount); + DbgP("ReadWrite.Buffer=(Next=0x%p, Size=%ld, MdlFlags=0x%lx, " + "Process=0x%p, MappedSystemVa=0x%p, StartVa=0x%p, " + "ByteCount=%ld, ByteOffset=%ld)\n", + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->Next, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->Size, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->MdlFlags, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->Process, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->MappedSystemVa, + (void *)LowIoContext->ParamsFor.ReadWrite.Buffer->StartVa, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->ByteCount, + (long)LowIoContext->ParamsFor.ReadWrite.Buffer->ByteOffset); + } + if ((bytescopied == 0) && (LowIoContext->ParamsFor.ReadWrite.ByteCount > 0)) { + DbgP("requesting STATUS_RETRY\n"); +// status = STATUS_RETRY; +// goto out; + } + +#endif +#else + (void)RtlCopyMemory(userbuffer_mem, + ((char *)UserBuffer)+LowIoContext->ParamsFor.ReadWrite.ByteOffset, + LowIoContext->ParamsFor.ReadWrite.ByteCount); +#endif + + entry->u.ReadWrite.MdlAddress = userbuffer_mdl; + entry->buf_len = LowIoContext->ParamsFor.ReadWrite.ByteCount; + entry->u.ReadWrite.offset = 0; +#else entry->u.ReadWrite.MdlAddress = LowIoContext->ParamsFor.ReadWrite.Buffer; entry->buf_len = LowIoContext->ParamsFor.ReadWrite.ByteCount; entry->u.ReadWrite.offset = LowIoContext->ParamsFor.ReadWrite.ByteOffset; +#endif if (FlagOn(RxContext->CurrentIrpSp->FileObject->Flags, FO_SYNCHRONOUS_IO) == FALSE) { @@ -420,6 +569,17 @@ NTSTATUS nfs41_Write( } nfs41_UpcallDestroy(entry); out: +#if 1 + if (!async) { + if (userbuffer_mdl) { + IoFreeMdl(userbuffer_mdl); + } + if (userbuffer_mem) { + RxFreePool(userbuffer_mem); + } + } +#endif + #ifdef ENABLE_TIMINGS t2 = KeQueryPerformanceCounter(NULL); InterlockedIncrement(&write.tops);

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