Ros-diffs October 2018

ros-diffs@reactos.org

21 participants
354 discussions

01/02: [NTOSKRNL] When checking for byte offset alignment, tolerate some magic values

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1bd25c5c24047c5d6e4c3… commit 1bd25c5c24047c5d6e4c387386c38073d551d827 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Thu Oct 4 07:53:12 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Thu Oct 4 07:53:12 2018 +0200 [NTOSKRNL] When checking for byte offset alignment, tolerate some magic values --- ntoskrnl/io/iomgr/iofunc.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/io/iomgr/iofunc.c b/ntoskrnl/io/iomgr/iofunc.c index c344b422d8..f3ad7164c2 100644 --- a/ntoskrnl/io/iomgr/iofunc.c +++ b/ntoskrnl/io/iomgr/iofunc.c @@ -3656,9 +3656,15 @@ NtWriteFile(IN HANDLE FileHandle, if ((DeviceObject->SectorSize != 0) && (ByteOffset->QuadPart % DeviceObject->SectorSize != 0)) { - /* Release the file object and and fail */ - ObDereferenceObject(FileObject); - return STATUS_INVALID_PARAMETER; + /* Only if that's not specific values for synchronous IO */ + if ((ByteOffset->QuadPart != FILE_WRITE_TO_END_OF_FILE) && + (ByteOffset->QuadPart != FILE_USE_FILE_POINTER_POSITION || + !BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO))) + { + /* Release the file object and and fail */ + ObDereferenceObject(FileObject); + return STATUS_INVALID_PARAMETER; + } } } }

7 years

01/01: [NTOSKRNL] NtReadFile/NtWriteFile: If a file has been opened for non-cached access, Length and ByteOffset must be sector size aligned.

by Eric Kohl

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=fd334021040e0377816e0… commit fd334021040e0377816e0ca198c9940ed8135e3a Author: Eric Kohl <eric.kohl(a)reactos.org> AuthorDate: Thu Oct 4 01:16:17 2018 +0200 Commit: Eric Kohl <eric.kohl(a)reactos.org> CommitDate: Thu Oct 4 01:17:58 2018 +0200 [NTOSKRNL] NtReadFile/NtWriteFile: If a file has been opened for non-cached access, Length and ByteOffset must be sector size aligned. This fixed two ntdll apitests. --- ntoskrnl/io/iomgr/iofunc.c | 83 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 67 insertions(+), 16 deletions(-) diff --git a/ntoskrnl/io/iomgr/iofunc.c b/ntoskrnl/io/iomgr/iofunc.c index 58a6316751..c344b422d8 100644 --- a/ntoskrnl/io/iomgr/iofunc.c +++ b/ntoskrnl/io/iomgr/iofunc.c @@ -2579,6 +2579,18 @@ NtReadFile(IN HANDLE FileHandle, CapturedByteOffset.QuadPart = 0; IOTRACE(IO_API_DEBUG, "FileHandle: %p\n", FileHandle); + /* Get File Object */ + Status = ObReferenceObjectByHandle(FileHandle, + FILE_READ_DATA, + IoFileObjectType, + PreviousMode, + (PVOID*)&FileObject, + NULL); + if (!NT_SUCCESS(Status)) return Status; + + /* Get the device object */ + DeviceObject = IoGetRelatedDeviceObject(FileObject); + /* Validate User-Mode Buffers */ if (PreviousMode != KernelMode) { @@ -2597,12 +2609,38 @@ NtReadFile(IN HANDLE FileHandle, CapturedByteOffset = ProbeForReadLargeInteger(ByteOffset); } + /* Perform additional checks for non-cached file access */ + if (FileObject->Flags & FO_NO_INTERMEDIATE_BUFFERING) + { + /* Fail if Length is not sector size aligned */ + if ((DeviceObject->SectorSize != 0) && + (Length % DeviceObject->SectorSize != 0)) + { + /* Release the file object and and fail */ + ObDereferenceObject(FileObject); + return STATUS_INVALID_PARAMETER; + } + + if (ByteOffset) + { + /* Fail if ByteOffset is not sector size aligned */ + if ((DeviceObject->SectorSize != 0) && + (ByteOffset->QuadPart % DeviceObject->SectorSize != 0)) + { + /* Release the file object and and fail */ + ObDereferenceObject(FileObject); + return STATUS_INVALID_PARAMETER; + } + } + } + /* Capture and probe the key */ if (Key) CapturedKey = ProbeForReadUlong(Key); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { - /* Return the exception code */ + /* Release the file object and return the exception code */ + ObDereferenceObject(FileObject); _SEH2_YIELD(return _SEH2_GetExceptionCode()); } _SEH2_END; @@ -2614,15 +2652,6 @@ NtReadFile(IN HANDLE FileHandle, if (Key) CapturedKey = *Key; } - /* Get File Object */ - Status = ObReferenceObjectByHandle(FileHandle, - FILE_READ_DATA, - IoFileObjectType, - PreviousMode, - (PVOID*)&FileObject, - NULL); - if (!NT_SUCCESS(Status)) return Status; - /* Check for event */ if (Event) { @@ -2644,9 +2673,6 @@ NtReadFile(IN HANDLE FileHandle, KeClearEvent(EventObject); } - /* Get the device object */ - DeviceObject = IoGetRelatedDeviceObject(FileObject); - /* Check if we should use Sync IO or not */ if (FileObject->Flags & FO_SYNCHRONOUS_IO) { @@ -3591,6 +3617,9 @@ NtWriteFile(IN HANDLE FileHandle, &ObjectHandleInfo); if (!NT_SUCCESS(Status)) return Status; + /* Get the device object */ + DeviceObject = IoGetRelatedDeviceObject(FileObject); + /* Validate User-Mode Buffers */ if (PreviousMode != KernelMode) { @@ -3609,6 +3638,31 @@ NtWriteFile(IN HANDLE FileHandle, CapturedByteOffset = ProbeForReadLargeInteger(ByteOffset); } + /* Perform additional checks for non-cached file access */ + if (FileObject->Flags & FO_NO_INTERMEDIATE_BUFFERING) + { + /* Fail if Length is not sector size aligned */ + if ((DeviceObject->SectorSize != 0) && + (Length % DeviceObject->SectorSize != 0)) + { + /* Release the file object and and fail */ + ObDereferenceObject(FileObject); + return STATUS_INVALID_PARAMETER; + } + + if (ByteOffset) + { + /* Fail if ByteOffset is not sector size aligned */ + if ((DeviceObject->SectorSize != 0) && + (ByteOffset->QuadPart % DeviceObject->SectorSize != 0)) + { + /* Release the file object and and fail */ + ObDereferenceObject(FileObject); + return STATUS_INVALID_PARAMETER; + } + } + } + /* Capture and probe the key */ if (Key) CapturedKey = ProbeForReadUlong(Key); } @@ -3657,9 +3711,6 @@ NtWriteFile(IN HANDLE FileHandle, KeClearEvent(EventObject); } - /* Get the device object */ - DeviceObject = IoGetRelatedDeviceObject(FileObject); - /* Check if we should use Sync IO or not */ if (FileObject->Flags & FO_SYNCHRONOUS_IO) {

7 years

01/01: [NTOSKRNL] In IopQueryNameInternal(), enclose output copy in a SEH statement

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d8f22735ed0895f3f8838… commit d8f22735ed0895f3f883825f8387bc3d4a6462fb Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 22:55:23 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 22:55:23 2018 +0200 [NTOSKRNL] In IopQueryNameInternal(), enclose output copy in a SEH statement --- ntoskrnl/io/iomgr/file.c | 229 ++++++++++++++++++++++++----------------------- 1 file changed, 117 insertions(+), 112 deletions(-) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index f8afc889fd..68a801fd4f 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -1975,142 +1975,147 @@ IopQueryNameInternal(IN PVOID ObjectBody, /* Get buffer pointer */ p = (PWCHAR)(ObjectNameInfo + 1); - /* Copy the information */ - if (QueryDosName && NoObCall) + _SEH2_TRY { - ASSERT(PreviousMode == KernelMode); + /* Copy the information */ + if (QueryDosName && NoObCall) + { + ASSERT(PreviousMode == KernelMode); - /* Copy structure first */ - RtlCopyMemory(ObjectNameInfo, - LocalInfo, - (Length >= LocalReturnLength ? sizeof(OBJECT_NAME_INFORMATION) : Length)); - /* Name then */ - RtlCopyMemory(p, LocalInfo->Name.Buffer, - (Length >= LocalReturnLength ? LocalInfo->Name.Length : Length - sizeof(OBJECT_NAME_INFORMATION))); + /* Copy structure first */ + RtlCopyMemory(ObjectNameInfo, + LocalInfo, + (Length >= LocalReturnLength ? sizeof(OBJECT_NAME_INFORMATION) : Length)); + /* Name then */ + RtlCopyMemory(p, LocalInfo->Name.Buffer, + (Length >= LocalReturnLength ? LocalInfo->Name.Length : Length - sizeof(OBJECT_NAME_INFORMATION))); - if (FileObject->DeviceObject->DeviceType != FILE_DEVICE_NETWORK_FILE_SYSTEM) + if (FileObject->DeviceObject->DeviceType != FILE_DEVICE_NETWORK_FILE_SYSTEM) + { + ExFreePool(LocalInfo->Name.Buffer); + } + } + else { - ExFreePool(LocalInfo->Name.Buffer); + RtlCopyMemory(ObjectNameInfo, + LocalInfo, + (LocalReturnLength > Length) ? + Length : LocalReturnLength); } - } - else - { - RtlCopyMemory(ObjectNameInfo, - LocalInfo, - (LocalReturnLength > Length) ? - Length : LocalReturnLength); - } - /* Set buffer pointer */ - ObjectNameInfo->Name.Buffer = p; + /* Set buffer pointer */ + ObjectNameInfo->Name.Buffer = p; - /* Advance in buffer */ - p += (LocalInfo->Name.Length / sizeof(WCHAR)); + /* Advance in buffer */ + p += (LocalInfo->Name.Length / sizeof(WCHAR)); - /* Check if this already filled our buffer */ - if (LocalReturnLength > Length) - { - /* Set the length mismatch to true, so that we can return - * the proper buffer size to the caller later - */ - LengthMismatch = TRUE; + /* Check if this already filled our buffer */ + if (LocalReturnLength > Length) + { + /* Set the length mismatch to true, so that we can return + * the proper buffer size to the caller later + */ + LengthMismatch = TRUE; - /* Save the initial buffer length value */ - *ReturnLength = LocalReturnLength; - } + /* Save the initial buffer length value */ + *ReturnLength = LocalReturnLength; + } - /* Now get the file name buffer and check the length needed */ - LocalFileInfo = (PFILE_NAME_INFORMATION)LocalInfo; - FileLength = Length - - LocalReturnLength + - FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + /* Now get the file name buffer and check the length needed */ + LocalFileInfo = (PFILE_NAME_INFORMATION)LocalInfo; + FileLength = Length - + LocalReturnLength + + FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); - /* Query the File name */ - if (PreviousMode == KernelMode && - BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO)) - { - Status = IopGetFileInformation(FileObject, - LengthMismatch ? Length : FileLength, - FileNameInformation, - LocalFileInfo, - &LocalReturnLength); - } - else - { - Status = IoQueryFileInformation(FileObject, - FileNameInformation, - LengthMismatch ? Length : FileLength, - LocalFileInfo, - &LocalReturnLength); - } - if (NT_ERROR(Status)) - { - /* Allow status that would mean it's not implemented in the storage stack */ - if (Status != STATUS_INVALID_PARAMETER && Status != STATUS_INVALID_DEVICE_REQUEST && - Status != STATUS_NOT_IMPLEMENTED && Status != STATUS_INVALID_INFO_CLASS) + /* Query the File name */ + if (PreviousMode == KernelMode && + BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO)) { - ExFreePoolWithTag(LocalInfo, TAG_IO); - return Status; + Status = IopGetFileInformation(FileObject, + LengthMismatch ? Length : FileLength, + FileNameInformation, + LocalFileInfo, + &LocalReturnLength); } - - /* In such case, zero output */ - LocalReturnLength = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); - LocalFileInfo->FileNameLength = 0; - LocalFileInfo->FileName[0] = OBJ_NAME_PATH_SEPARATOR; - } - else - { - /* We'll at least return the name length */ - if (LocalReturnLength < FIELD_OFFSET(FILE_NAME_INFORMATION, FileName)) + else + { + Status = IoQueryFileInformation(FileObject, + FileNameInformation, + LengthMismatch ? Length : FileLength, + LocalFileInfo, + &LocalReturnLength); + } + if (NT_ERROR(Status)) { + /* Allow status that would mean it's not implemented in the storage stack */ + if (Status != STATUS_INVALID_PARAMETER && Status != STATUS_INVALID_DEVICE_REQUEST && + Status != STATUS_NOT_IMPLEMENTED && Status != STATUS_INVALID_INFO_CLASS) + { + _SEH2_LEAVE; + } + + /* In such case, zero output */ LocalReturnLength = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + LocalFileInfo->FileNameLength = 0; + LocalFileInfo->FileName[0] = OBJ_NAME_PATH_SEPARATOR; + } + else + { + /* We'll at least return the name length */ + if (LocalReturnLength < FIELD_OFFSET(FILE_NAME_INFORMATION, FileName)) + { + LocalReturnLength = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + } } - } - /* If the provided buffer is too small, return the required size */ - if (LengthMismatch) - { - /* Add the required length */ - *ReturnLength += LocalFileInfo->FileNameLength; + /* If the provided buffer is too small, return the required size */ + if (LengthMismatch) + { + /* Add the required length */ + *ReturnLength += LocalFileInfo->FileNameLength; - /* Free the allocated buffer and return failure */ - ExFreePoolWithTag(LocalInfo, TAG_IO); - return STATUS_BUFFER_OVERFLOW; - } + /* Free the allocated buffer and return failure */ + Status = STATUS_BUFFER_OVERFLOW; + _SEH2_LEAVE; + } - /* Now calculate the new lengths left */ - FileLength = LocalReturnLength - - FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); - LocalReturnLength = (ULONG)((ULONG_PTR)p - - (ULONG_PTR)ObjectNameInfo + - LocalFileInfo->FileNameLength); + /* Now calculate the new lengths left */ + FileLength = LocalReturnLength - + FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + LocalReturnLength = (ULONG)((ULONG_PTR)p - + (ULONG_PTR)ObjectNameInfo + + LocalFileInfo->FileNameLength); - /* Don't copy the name if it's not valid */ - if (LocalFileInfo->FileName[0] != OBJ_NAME_PATH_SEPARATOR) - { - /* Free the allocated buffer and return failure */ - ExFreePoolWithTag(LocalInfo, TAG_IO); - return STATUS_OBJECT_PATH_INVALID; - } + /* Don't copy the name if it's not valid */ + if (LocalFileInfo->FileName[0] != OBJ_NAME_PATH_SEPARATOR) + { + /* Free the allocated buffer and return failure */ + Status = STATUS_OBJECT_PATH_INVALID; + _SEH2_LEAVE; + } - /* Write the Name and null-terminate it */ - RtlCopyMemory(p, LocalFileInfo->FileName, FileLength); - p += (FileLength / sizeof(WCHAR)); - *p = UNICODE_NULL; - LocalReturnLength += sizeof(UNICODE_NULL); + /* Write the Name and null-terminate it */ + RtlCopyMemory(p, LocalFileInfo->FileName, FileLength); + p += (FileLength / sizeof(WCHAR)); + *p = UNICODE_NULL; + LocalReturnLength += sizeof(UNICODE_NULL); - /* Return the length needed */ - *ReturnLength = LocalReturnLength; + /* Return the length needed */ + *ReturnLength = LocalReturnLength; - /* Setup the length and maximum length */ - FileLength = (ULONG)((ULONG_PTR)p - (ULONG_PTR)ObjectNameInfo); - ObjectNameInfo->Name.Length = (USHORT)FileLength - - sizeof(OBJECT_NAME_INFORMATION); - ObjectNameInfo->Name.MaximumLength = (USHORT)ObjectNameInfo->Name.Length + - sizeof(UNICODE_NULL); + /* Setup the length and maximum length */ + FileLength = (ULONG)((ULONG_PTR)p - (ULONG_PTR)ObjectNameInfo); + ObjectNameInfo->Name.Length = (USHORT)FileLength - + sizeof(OBJECT_NAME_INFORMATION); + ObjectNameInfo->Name.MaximumLength = (USHORT)ObjectNameInfo->Name.Length + + sizeof(UNICODE_NULL); + } + _SEH2_FINALLY + { + /* Free buffer and return */ + ExFreePoolWithTag(LocalInfo, TAG_IO); + } _SEH2_END; - /* Free buffer and return */ - ExFreePoolWithTag(LocalInfo, TAG_IO); return Status; }

7 years

01/01: [NTOSKRNL] Call IoCreateFileSpecifyDeviceObjectHint with the hint if it was specified

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=15b9a6aa4c131b99ada2b… commit 15b9a6aa4c131b99ada2bccfe79e319e0daed750 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 21:28:11 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 21:29:12 2018 +0200 [NTOSKRNL] Call IoCreateFileSpecifyDeviceObjectHint with the hint if it was specified --- ntoskrnl/io/iomgr/iofunc.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/ntoskrnl/io/iomgr/iofunc.c b/ntoskrnl/io/iomgr/iofunc.c index 2ee72479cf..58a6316751 100644 --- a/ntoskrnl/io/iomgr/iofunc.c +++ b/ntoskrnl/io/iomgr/iofunc.c @@ -905,14 +905,16 @@ IopOpenLinkOrRenameTarget(OUT PHANDLE Handle, RenameInfo->RootDirectory, NULL); - /* And open its parent directory */ + /* And open its parent directory + * Use hint if specified + */ if (FileObject->Flags & FO_FILE_OBJECT_HAS_EXTENSION) { + PFILE_OBJECT_EXTENSION FileObjectExtension; + ASSERT(!(FileObject->Flags & FO_DIRECT_DEVICE_OPEN)); -#if 0 - /* Commented out - we don't support FO extension yet - * FIXME: Corrected last arg when it's supported - */ + + FileObjectExtension = FileObject->FileObjectExtension; Status = IoCreateFileSpecifyDeviceObjectHint(&TargetHandle, DesiredAccess | SYNCHRONIZE, &ObjectAttributes, @@ -927,12 +929,7 @@ IopOpenLinkOrRenameTarget(OUT PHANDLE Handle, CreateFileTypeNone, NULL, IO_FORCE_ACCESS_CHECK | IO_OPEN_TARGET_DIRECTORY | IO_NO_PARAMETER_CHECKING, - FileObject->DeviceObject); -#else - ASSERT(FALSE); - UNIMPLEMENTED; - return STATUS_NOT_IMPLEMENTED; -#endif + FileObjectExtension->TopDeviceObjectHint); } else {

7 years

01/01: [LDR] Include dllname in snap failure DPRINT. CORE-15135

by Mark Jansen

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1a9b50690a241dfec86ed… commit 1a9b50690a241dfec86ed32dd7ac7a7a7c9a1644 Author: Mark Jansen <mark.jansen(a)reactos.org> AuthorDate: Wed Oct 3 19:34:14 2018 +0200 Commit: Mark Jansen <mark.jansen(a)reactos.org> CommitDate: Wed Oct 3 19:34:14 2018 +0200 [LDR] Include dllname in snap failure DPRINT. CORE-15135 --- dll/ntdll/ldr/ldrpe.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/dll/ntdll/ldr/ldrpe.c b/dll/ntdll/ldr/ldrpe.c index 598e3e5477..d0bf128a63 100644 --- a/dll/ntdll/ldr/ldrpe.c +++ b/dll/ntdll/ldr/ldrpe.c @@ -1028,14 +1028,14 @@ FailurePath: /* Is this a static snap? */ if (Static) { + RtlInitAnsiString(&TempString, DllName ? DllName : "Unknown"); /* Inform the debug log */ if (IsOrdinal) - DPRINT1("Failed to snap ordinal 0x%x\n", OriginalOrdinal); + DPRINT1("Failed to snap ordinal %Z!0x%x\n", &TempString, OriginalOrdinal); else - DPRINT1("Failed to snap %s\n", ImportName); + DPRINT1("Failed to snap %Z!%s\n", &TempString, ImportName); /* These are critical errors. Setup a string for the DLL name */ - RtlInitAnsiString(&TempString, DllName ? DllName : "Unknown"); RtlAnsiStringToUnicodeString(&HardErrorDllName, &TempString, TRUE); /* Set it as the parameter */

7 years

01/01: [NTOSKRNL] In IoQueryFileDosDeviceName(), in case of an error, return appropriate status

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=520f404e9c9d31fa2a36c… commit 520f404e9c9d31fa2a36c1d1e0cebfe9fe581ed7 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 17:08:42 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 17:08:42 2018 +0200 [NTOSKRNL] In IoQueryFileDosDeviceName(), in case of an error, return appropriate status --- ntoskrnl/io/iomgr/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index df4e37638e..f8afc889fd 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -3619,7 +3619,7 @@ IoQueryFileDosDeviceName(IN PFILE_OBJECT FileObject, */ if (Status != STATUS_BUFFER_OVERFLOW) { - return STATUS_BUFFER_OVERFLOW; + return Status; } }

7 years

07/07: [NTOSKRNL] Implement DOS name query in IopQueryNameInternal()

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=8c6c5a92e86ecd69d0fd5… commit 8c6c5a92e86ecd69d0fd5662645a1696706eb56a Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 13:56:18 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 13:56:18 2018 +0200 [NTOSKRNL] Implement DOS name query in IopQueryNameInternal() --- ntoskrnl/io/iomgr/file.c | 88 +++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 76 insertions(+), 12 deletions(-) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index 1112686225..df4e37638e 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -1902,6 +1902,9 @@ IopQueryNameInternal(IN PVOID ObjectBody, BOOLEAN LengthMismatch = FALSE; NTSTATUS Status; PWCHAR p; + PDEVICE_OBJECT DeviceObject; + BOOLEAN NoObCall; + IOTRACE(IO_FILE_DEBUG, "ObjectBody: %p\n", ObjectBody); /* Validate length */ @@ -1912,17 +1915,56 @@ IopQueryNameInternal(IN PVOID ObjectBody, return STATUS_INFO_LENGTH_MISMATCH; } - if (QueryDosName) return STATUS_NOT_IMPLEMENTED; - /* Allocate Buffer */ LocalInfo = ExAllocatePoolWithTag(PagedPool, Length, TAG_IO); if (!LocalInfo) return STATUS_INSUFFICIENT_RESOURCES; - /* Query the name */ - Status = ObQueryNameString(FileObject->DeviceObject, - LocalInfo, - Length, - &LocalReturnLength); + /* Query DOS name if the caller asked to */ + NoObCall = FALSE; + if (QueryDosName) + { + DeviceObject = FileObject->DeviceObject; + + /* In case of a network file system, don't call mountmgr */ + if (DeviceObject->DeviceType == FILE_DEVICE_NETWORK_FILE_SYSTEM) + { + /* We'll store separator and terminator */ + LocalReturnLength = sizeof(OBJECT_NAME_INFORMATION) + 2 * sizeof(WCHAR); + if (Length < LocalReturnLength) + { + Status = STATUS_BUFFER_OVERFLOW; + } + else + { + LocalInfo->Name.Length = sizeof(WCHAR); + LocalInfo->Name.MaximumLength = sizeof(WCHAR); + LocalInfo->Name.Buffer = (PVOID)((ULONG_PTR)LocalInfo + sizeof(OBJECT_NAME_INFORMATION)); + LocalInfo->Name.Buffer[0] = OBJ_NAME_PATH_SEPARATOR; + Status = STATUS_SUCCESS; + } + } + /* Otherwise, call mountmgr to get DOS name */ + else + { + Status = IoVolumeDeviceToDosName(DeviceObject, &LocalInfo->Name); + LocalReturnLength = LocalInfo->Name.Length + sizeof(OBJECT_NAME_INFORMATION) + sizeof(WCHAR); + } + } + + /* Fall back if querying DOS name failed or if caller never wanted it ;-) */ + if (!QueryDosName || !NT_SUCCESS(Status)) + { + /* Query the name */ + Status = ObQueryNameString(FileObject->DeviceObject, + LocalInfo, + Length, + &LocalReturnLength); + } + else + { + NoObCall = TRUE; + } + if (!NT_SUCCESS(Status) && (Status != STATUS_INFO_LENGTH_MISMATCH)) { /* Free the buffer and fail */ @@ -1930,14 +1972,36 @@ IopQueryNameInternal(IN PVOID ObjectBody, return Status; } + /* Get buffer pointer */ + p = (PWCHAR)(ObjectNameInfo + 1); + /* Copy the information */ - RtlCopyMemory(ObjectNameInfo, - LocalInfo, - (LocalReturnLength > Length) ? - Length : LocalReturnLength); + if (QueryDosName && NoObCall) + { + ASSERT(PreviousMode == KernelMode); + + /* Copy structure first */ + RtlCopyMemory(ObjectNameInfo, + LocalInfo, + (Length >= LocalReturnLength ? sizeof(OBJECT_NAME_INFORMATION) : Length)); + /* Name then */ + RtlCopyMemory(p, LocalInfo->Name.Buffer, + (Length >= LocalReturnLength ? LocalInfo->Name.Length : Length - sizeof(OBJECT_NAME_INFORMATION))); + + if (FileObject->DeviceObject->DeviceType != FILE_DEVICE_NETWORK_FILE_SYSTEM) + { + ExFreePool(LocalInfo->Name.Buffer); + } + } + else + { + RtlCopyMemory(ObjectNameInfo, + LocalInfo, + (LocalReturnLength > Length) ? + Length : LocalReturnLength); + } /* Set buffer pointer */ - p = (PWCHAR)(ObjectNameInfo + 1); ObjectNameInfo->Name.Buffer = p; /* Advance in buffer */

7 years

06/07: [NTOSKRNL] Allow FileNameInformation not to be implemented in storage stack

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=769157f6ff016be3ea0e3… commit 769157f6ff016be3ea0e3086a61d946262be8f7d Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 13:52:05 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 13:52:05 2018 +0200 [NTOSKRNL] Allow FileNameInformation not to be implemented in storage stack --- ntoskrnl/io/iomgr/file.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index 0fbac2cc91..1112686225 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -1981,9 +1981,26 @@ IopQueryNameInternal(IN PVOID ObjectBody, } if (NT_ERROR(Status)) { - /* Fail on errors only, allow warnings */ - ExFreePoolWithTag(LocalInfo, TAG_IO); - return Status; + /* Allow status that would mean it's not implemented in the storage stack */ + if (Status != STATUS_INVALID_PARAMETER && Status != STATUS_INVALID_DEVICE_REQUEST && + Status != STATUS_NOT_IMPLEMENTED && Status != STATUS_INVALID_INFO_CLASS) + { + ExFreePoolWithTag(LocalInfo, TAG_IO); + return Status; + } + + /* In such case, zero output */ + LocalReturnLength = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + LocalFileInfo->FileNameLength = 0; + LocalFileInfo->FileName[0] = OBJ_NAME_PATH_SEPARATOR; + } + else + { + /* We'll at least return the name length */ + if (LocalReturnLength < FIELD_OFFSET(FILE_NAME_INFORMATION, FileName)) + { + LocalReturnLength = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName); + } } /* If the provided buffer is too small, return the required size */

7 years

05/07: [NTOSKRNL] In IopQueryNameInternal() don't copy name if it's not valid

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=46bda8a4c67c411aa4359… commit 46bda8a4c67c411aa4359411ad9f6c980d0c3eef Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 13:50:16 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 13:50:16 2018 +0200 [NTOSKRNL] In IopQueryNameInternal() don't copy name if it's not valid --- ntoskrnl/io/iomgr/file.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index 1fb691809c..0fbac2cc91 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -2004,6 +2004,14 @@ IopQueryNameInternal(IN PVOID ObjectBody, (ULONG_PTR)ObjectNameInfo + LocalFileInfo->FileNameLength); + /* Don't copy the name if it's not valid */ + if (LocalFileInfo->FileName[0] != OBJ_NAME_PATH_SEPARATOR) + { + /* Free the allocated buffer and return failure */ + ExFreePoolWithTag(LocalInfo, TAG_IO); + return STATUS_OBJECT_PATH_INVALID; + } + /* Write the Name and null-terminate it */ RtlCopyMemory(p, LocalFileInfo->FileName, FileLength); p += (FileLength / sizeof(WCHAR));

7 years

04/07: [NTOSKRNL] Implement IoQueryFileDosDeviceName()

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=4a7e89770eaefdd54b9f2… commit 4a7e89770eaefdd54b9f2f3c20047c29cd52a19a Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Oct 3 11:56:21 2018 +0200 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Wed Oct 3 11:56:21 2018 +0200 [NTOSKRNL] Implement IoQueryFileDosDeviceName() --- ntoskrnl/io/iomgr/file.c | 54 +++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 51 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/io/iomgr/file.c b/ntoskrnl/io/iomgr/file.c index 792376ca82..1fb691809c 100644 --- a/ntoskrnl/io/iomgr/file.c +++ b/ntoskrnl/io/iomgr/file.c @@ -3480,15 +3480,63 @@ IoCancelFileOpen(IN PDEVICE_OBJECT DeviceObject, } /* - * @unimplemented + * @implemented */ NTSTATUS NTAPI IoQueryFileDosDeviceName(IN PFILE_OBJECT FileObject, OUT POBJECT_NAME_INFORMATION *ObjectNameInformation) { - UNIMPLEMENTED; - return STATUS_NOT_IMPLEMENTED; + NTSTATUS Status; + ULONG Length, ReturnLength; + POBJECT_NAME_INFORMATION LocalInfo; + + /* Start with a buffer length of 200 */ + ReturnLength = 200; + /* + * We'll loop until query works. + * We will use returned length for next loop + * iteration, trying to have a big enough buffer. + */ + for (Length = 200; ; Length = ReturnLength) + { + /* Allocate our work buffer */ + LocalInfo = ExAllocatePoolWithTag(PagedPool, Length, 'nDoI'); + if (LocalInfo == NULL) + { + return STATUS_INSUFFICIENT_RESOURCES; + } + + /* Query the DOS name */ + Status = IopQueryNameInternal(FileObject, + TRUE, + TRUE, + LocalInfo, + Length, + &ReturnLength, + KernelMode); + /* If it succeed, nothing more to do */ + if (Status == STATUS_SUCCESS) + { + break; + } + + /* Otherwise, prepare for re-allocation */ + ExFreePoolWithTag(LocalInfo, 'nDoI'); + + /* + * If we failed because of something else + * than memory, simply stop and fail here + */ + if (Status != STATUS_BUFFER_OVERFLOW) + { + return STATUS_BUFFER_OVERFLOW; + } + } + + /* Success case here: return our buffer */ + *ObjectNameInformation = LocalInfo; + return STATUS_SUCCESS; } /*

7 years

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Ros-diffs October 2018