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sys: FspFsvolQueryDirectoryRetry: early exit when pattern not wild

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This commit is contained in:
Bill Zissimopoulos 2021-12-03 17:20:50 +00:00
parent 8ce6836674
commit c32b1c19c2
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GPG Key ID: 3D4F95D52C7B3EA3
1 changed files with 10 additions and 11 deletions
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21
src/sys/dirctl.c
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@ -463,7 +463,7 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
PVOID DirInfoBuffer; PVOID DirInfoBuffer;
ULONG DirInfoSize; ULONG DirInfoSize;
FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp); FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
BOOLEAN PassQueryDirectoryPattern, PatternIsFileName; BOOLEAN PassQueryDirectoryPattern, PatternIsWild, PatternIsFileName;
BOOLEAN Success; BOOLEAN Success;
ASSERT(FileNode == FileDesc->FileNode); ASSERT(FileNode == FileDesc->FileNode);
@ -520,6 +520,14 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
return Result; return Result;
} }
/* if the pattern does not contain wildcards and we already returned a result, bail now! */
PatternIsWild = FsRtlDoesNameContainWildCards(&FileDesc->DirectoryPattern);
if (!PatternIsWild && FileDesc->DirectoryHasSuchFile)
{
FspFileNodeRelease(FileNode, Full);
return STATUS_NO_MORE_FILES;
}
/* see if the required information is still in the cache and valid! */ /* see if the required information is still in the cache and valid! */
if (FspFileNodeReferenceDirInfo(FileNode, &DirInfoBuffer, &DirInfoSize)) if (FspFileNodeReferenceDirInfo(FileNode, &DirInfoBuffer, &DirInfoSize))
{ {
@ -545,19 +553,10 @@ static NTSTATUS FspFsvolQueryDirectoryRetry(
/* special handling when pattern is filename */ /* special handling when pattern is filename */
PatternIsFileName = FsvolDeviceExtension->VolumeParams.PassQueryDirectoryFileName && PatternIsFileName = FsvolDeviceExtension->VolumeParams.PassQueryDirectoryFileName &&
!FsRtlDoesNameContainWildCards(&FileDesc->DirectoryPattern); !PatternIsWild;
PassQueryDirectoryPattern = PatternIsFileName || PassQueryDirectoryPattern = PatternIsFileName ||
(FsvolDeviceExtension->VolumeParams.PassQueryDirectoryPattern && (FsvolDeviceExtension->VolumeParams.PassQueryDirectoryPattern &&
FspFileDescDirectoryPatternMatchAll != FileDesc->DirectoryPattern.Buffer); FspFileDescDirectoryPatternMatchAll != FileDesc->DirectoryPattern.Buffer);
if (PatternIsFileName &&
0 != FileDesc->DirectoryMarker.Buffer &&
0 == FspFileNameCompare(&FileDesc->DirectoryPattern, &FileDesc->DirectoryMarker,
!FileDesc->CaseSensitive, 0))
{
FspFileNodeRelease(FileNode, Full);
return !FileDesc->DirectoryHasSuchFile ?
STATUS_NO_SUCH_FILE : STATUS_NO_MORE_FILES;
}
/* probe and lock the user buffer */ /* probe and lock the user buffer */
Result = FspLockUserBuffer(Irp, Length, IoWriteAccess); Result = FspLockUserBuffer(Irp, Length, IoWriteAccess);