https://git.reactos.org/?p=reactos.git;a=commitdiff;h=769157f6ff016be3ea0e3086a61d946262be8f7d
commit 769157f6ff016be3ea0e3086a61d946262be8f7d Author: Pierre Schweitzer <[email protected]> AuthorDate: Wed Oct 3 13:52:05 2018 +0200 Commit: Pierre Schweitzer <[email protected]> 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 */
