From b3f9e7e32d53ff099c4a863771b2639e4c8287b7 Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Sun, 3 Jan 2016 15:08:05 -0800
Subject: [PATCH] dll: WIP

---
 inc/winfsp/winfsp.h |  8 ++++++++
 src/dll/create.c    | 29 ++++++++++++++++++-----------
 src/dll/loop.c      |  2 +-
 3 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/inc/winfsp/winfsp.h b/inc/winfsp/winfsp.h
index 7f7a4249..73118e6c 100644
--- a/inc/winfsp/winfsp.h
+++ b/inc/winfsp/winfsp.h
@@ -33,6 +33,8 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
         FSP_FSCTL_TRANSACT_REQ *, DWORD, PDWORD);
     NTSTATUS (*QuerySecurity)(FSP_FILE_SYSTEM *,
         PWSTR, SECURITY_INFORMATION, PSECURITY_DESCRIPTOR, SIZE_T *);
+    NTSTATUS (*FileCreate)(FSP_FILE_SYSTEM *,
+        FSP_FSCTL_TRANSACT_REQ *, PVOID *File);
 } FSP_FILE_SYSTEM_INTERFACE;
 typedef struct _FSP_FILE_SYSTEM
 {
@@ -113,6 +115,12 @@ FSP_API NTSTATUS FspFileSystemSendResponse(FSP_FILE_SYSTEM *FileSystem,
 FSP_API NTSTATUS FspFileSystemSendResponseWithStatus(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request, NTSTATUS Result);
 
+/*
+ * File System Operations
+ */
+FSP_API NTSTATUS FspFileSystemOpCreate(FSP_FILE_SYSTEM *FileSystem,
+    FSP_FSCTL_TRANSACT_REQ *Request);
+
 /*
  * Access Checks
  */
diff --git a/src/dll/create.c b/src/dll/create.c
index a831eb06..ce013e4b 100644
--- a/src/dll/create.c
+++ b/src/dll/create.c
@@ -6,22 +6,27 @@
 
 #include <dll/library.h>
 
-#if 0
 static NTSTATUS FspFileSystemOpCreate_FileCreate(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request)
 {
+    if (0 == FileSystem->Interface->FileCreate)
+        return FspFileSystemSendResponseWithStatus(FileSystem, Request, STATUS_NOT_IMPLEMENTED);
+
     NTSTATUS Result;
     DWORD GrantedAccess;
     PVOID File;
     FSP_FSCTL_TRANSACT_RSP Response;
 
-    Result = FspAccessCheck(FileSystem, Request, TRUE, &GrantedAccess);
+    Result = FspAccessCheck(FileSystem, Request, TRUE,
+        (Request->Req.Create.CreateOptions & FILE_DIRECTORY_FILE) ?
+            FILE_ADD_SUBDIRECTORY : FILE_ADD_FILE,
+        &GrantedAccess);
     if (!NT_SUCCESS(Result))
-        return FspSendResponseWithStatus(FileSystem, Request, Result);
+        return FspFileSystemSendResponseWithStatus(FileSystem, Request, Result);
 
-    Result = FileSystem->FileCreate(FileSystem, Request, &File);
+    Result = FileSystem->Interface->FileCreate(FileSystem, Request, &File);
     if (!NT_SUCCESS(Result))
-        return FspSendResponseWithStatus(FileSystem, Request, Result);
+        return FspFileSystemSendResponseWithStatus(FileSystem, Request, Result);
 
     /* !!!: set share access */
 
@@ -33,12 +38,14 @@ static NTSTATUS FspFileSystemOpCreate_FileCreate(FSP_FILE_SYSTEM *FileSystem,
     Response.IoStatus.Information = FILE_CREATED;
     Response.Rsp.Create.Opened.UserContext = (UINT_PTR)File;
     Response.Rsp.Create.Opened.GrantedAccess = GrantedAccess;
-    return FspSendResponse(FileSystem, &Response);
+    return FspFileSystemSendResponse(FileSystem, &Response);
 }
 
 static NTSTATUS FspFileSystemOpCreate_FileOpen(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request)
 {
+    return STATUS_NOT_IMPLEMENTED;
+#if 0
     NTSTATUS Result;
     DWORD GrantedAccess;
     PVOID File;
@@ -68,24 +75,25 @@ static NTSTATUS FspFileSystemOpCreate_FileOpen(FSP_FILE_SYSTEM *FileSystem,
     Response.Rsp.Create.Opened.UserContext = (UINT_PTR)File;
     Response.Rsp.Create.Opened.GrantedAccess = GrantedAccess;
     return FspSendResponse(FileSystem, &Response);
+#endif
 }
 
 static NTSTATUS FspFileSystemOpCreate_FileOpenIf(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request)
 {
-    return STATUS_INVALID_PARAMETER;
+    return STATUS_NOT_IMPLEMENTED;
 }
 
 static NTSTATUS FspFileSystemOpCreate_FileOverwrite(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request, BOOLEAN Supersede)
 {
-    return STATUS_INVALID_PARAMETER;
+    return STATUS_NOT_IMPLEMENTED;
 }
 
 static NTSTATUS FspFileSystemOpCreate_FileOverwriteIf(FSP_FILE_SYSTEM *FileSystem,
     FSP_FSCTL_TRANSACT_REQ *Request)
 {
-    return STATUS_INVALID_PARAMETER;
+    return STATUS_NOT_IMPLEMENTED;
 }
 
 FSP_API NTSTATUS FspFileSystemOpCreate(FSP_FILE_SYSTEM *FileSystem,
@@ -106,7 +114,6 @@ FSP_API NTSTATUS FspFileSystemOpCreate(FSP_FILE_SYSTEM *FileSystem,
     case FILE_OVERWRITE_IF:
         return FspFileSystemOpCreate_FileOverwriteIf(FileSystem, Request);
     default:
-        return FspSendResponseWithStatus(FileSystem, Request, STATUS_INVALID_PARAMETER);
+        return FspFileSystemSendResponseWithStatus(FileSystem, Request, STATUS_INVALID_PARAMETER);
     }
 }
-#endif
diff --git a/src/dll/loop.c b/src/dll/loop.c
index 5150f636..b93829df 100644
--- a/src/dll/loop.c
+++ b/src/dll/loop.c
@@ -40,7 +40,7 @@ FSP_API NTSTATUS FspFileSystemCreate(PWSTR DevicePath,
     }
 
     FileSystem->Dispatcher = FspFileSystemDirectDispatcher;
-    FileSystem->Operations[FspFsctlTransactCreateKind] = 0;
+    FileSystem->Operations[FspFsctlTransactCreateKind] = FspFileSystemOpCreate;
     // !!!: ...
     FileSystem->Interface = Interface;