[PATCH 0/1] MR3248: include: Add REPARSE_(GUID_)DATA_BUFFER and related constants.

[Alex Henrie (＠alexhenrie)]

Based on a patch by Erich E. Hoover.

Wine Staging has been carrying this code around since 2014. It should be fine to upstream it even if the rest of the [junction point patches](https://gitlab.winehq.org/wine/wine-staging/-/tree/master/patches/ntdll-Junc...) aren't ready yet, and upstreaming will reduce the burden on the Staging maintainers.

[PATCH 1/1] include: Add REPARSE_(GUID_)DATA_BUFFER and related constants.

[Alex Henrie]

From: Alex Henrie

Based on a patch by Erich E. Hoover.
---
 include/ddk/ntifs.h | 54 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/include/ddk/ntifs.h b/include/ddk/ntifs.h
index bd4bd58be26..b793f00bc8e 100644
--- a/include/ddk/ntifs.h
+++ b/include/ddk/ntifs.h
@@ -30,6 +30,8 @@
 #define PHCM_DISGUISE_FULL_PLACEHOLDERS ((char)3)
 #define PHCM_MAX                        ((char)3)

+#define SYMLINK_FLAG_RELATIVE 0x00000001
+
 typedef struct _EX_PUSH_LOCK EX_PUSH_LOCK, *PEX_PUSH_LOCK;

typedef enum _FS_FILTER_SECTION_SYNC_TYPE
@@ -138,6 +140,58 @@ typedef struct _FS_FILTER_CALLBACKS
     PFS_FILTER_COMPLETION_CALLBACK PostReleaseForModifiedPageWriter;
 } FS_FILTER_CALLBACKS, *PFS_FILTER_CALLBACKS;

+typedef struct _REPARSE_DATA_BUFFER
+{
+    ULONG  ReparseTag;
+    USHORT ReparseDataLength;
+    USHORT Reserved;
+
+    union
+    {
+        struct
+        {
+            USHORT SubstituteNameOffset;
+            USHORT SubstituteNameLength;
+            USHORT PrintNameOffset;
+            USHORT PrintNameLength;
+            ULONG  Flags;
+            WCHAR  PathBuffer[1];
+        } SymbolicLinkReparseBuffer;
+
+        struct
+        {
+            USHORT SubstituteNameOffset;
+            USHORT SubstituteNameLength;
+            USHORT PrintNameOffset;
+            USHORT PrintNameLength;
+            WCHAR  PathBuffer[1];
+        } MountPointReparseBuffer;
+
+        struct
+        {
+            UCHAR DataBuffer[1];
+        } GenericReparseBuffer;
+
+    } DUMMYUNIONNAME;
+
+} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
+
+typedef struct _REPARSE_GUID_DATA_BUFFER
+{
+    DWORD ReparseTag;
+    WORD  ReparseDataLength;
+    WORD  Reserved;
+    GUID  ReparseGuid;
+
+    struct
+    {
+        BYTE DataBuffer[1];
+    } GenericReparseBuffer;
+
+} REPARSE_GUID_DATA_BUFFER, *PREPARSE_GUID_DATA_BUFFER;
+
+#define REPARSE_GUID_DATA_BUFFER_HEADER_SIZE FIELD_OFFSET(REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer)
+
 BOOLEAN WINAPI FsRtlIsNameInExpression(PUNICODE_STRING, PUNICODE_STRING, BOOLEAN, PWCH);
 DEVICE_OBJECT * WINAPI IoGetAttachedDevice(DEVICE_OBJECT*);
 PEPROCESS WINAPI IoGetRequestorProcess(IRP*);

[PATCH 0/1] MR3248: include: Add REPARSE_(GUID_)DATA_BUFFER and related constants. - approved

[Erich Hoover (＠ehoover)]

This merge request was approved by Erich Hoover.

[Erich Hoover (＠ehoover)]

Thanks Alex, I was almost done getting things cleaned up for another attempt before life got in the way.  Looking at August for doing final touch-ups and seeing if I can get at least some of these patches in.