From e222c3ae7238ad0417665883eaafedf63ea513fb Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Thu, 9 Jun 2016 12:50:53 -0700
Subject: [PATCH] dll: fuse: implementation checkpoint

---
 src/dll/fuse/fuseintf.c | 32 ++++++++++++++++++++++++++++----
 src/dll/fuse/library.h  |  1 +
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/src/dll/fuse/fuseintf.c b/src/dll/fuse/fuseintf.c
index 45685bec..b046ecf3 100644
--- a/src/dll/fuse/fuseintf.c
+++ b/src/dll/fuse/fuseintf.c
@@ -22,8 +22,10 @@ NTSTATUS fsp_fuse_op_enter(FSP_FILE_SYSTEM *FileSystem,
 {
     struct fuse_context *context;
     struct fsp_fuse_context_header *context_header;
+    char *PosixPath = 0;
     UINT32 Uid = -1, Gid = -1;
-    HANDLE Token;
+    PWSTR FileName = 0;
+    HANDLE Token = 0;
     union
     {
         TOKEN_USER V;
@@ -40,14 +42,25 @@ NTSTATUS fsp_fuse_op_enter(FSP_FILE_SYSTEM *FileSystem,
     NTSTATUS Result;
 
     if (FspFsctlTransactCreateKind == Request->Kind)
+    {
+        FileName = (PWSTR)Request->Buffer;
         Token = (HANDLE)Request->Req.Create.AccessToken;
+    }
     else if (FspFsctlTransactSetInformationKind == Request->Kind &&
         10/*FileRenameInformation*/ == Request->Req.SetInformation.FileInformationClass)
+    {
+        FileName = (PWSTR)(Request->Buffer + Request->Req.SetInformation.Info.Rename.NewFileName.Offset);
         Token = (HANDLE)Request->Req.SetInformation.Info.Rename.AccessToken;
+    }
     else if (FspFsctlTransactSetSecurityKind == Request->Kind)
         Token = (HANDLE)Request->Req.SetSecurity.AccessToken;
-    else
-        Token = 0;
+
+    if (0 != FileName)
+    {
+        Result = FspPosixMapWindowsToPosixPath(FileName, &PosixPath);
+        if (!NT_SUCCESS(Result))
+            goto exit;
+    }
 
     if (0 != Token)
     {
@@ -111,6 +124,10 @@ NTSTATUS fsp_fuse_op_enter(FSP_FILE_SYSTEM *FileSystem,
         goto exit;
     }
 
+    Result = FspFileSystemOpEnter(FileSystem, Request, Response);
+    if (!NT_SUCCESS(Result))
+        goto exit;
+
     context->fuse = FileSystem->UserContext;
     context->uid = Uid;
     context->gid = Gid;
@@ -118,8 +135,9 @@ NTSTATUS fsp_fuse_op_enter(FSP_FILE_SYSTEM *FileSystem,
     context_header = (PVOID)((PUINT8)context - sizeof *context_header);
     context_header->Request = Request;
     context_header->Response = Response;
+    context_header->PosixPath = PosixPath;
 
-    Result = FspFileSystemOpEnter(FileSystem, Request, Response);
+    Result = STATUS_SUCCESS;
 
 exit:
     if (UserInfo != &UserInfoBuf.V)
@@ -128,6 +146,9 @@ exit:
     if (GroupInfo != &GroupInfoBuf.V)
         MemFree(GroupInfo);
 
+    if (!NT_SUCCESS(Result) && 0 != PosixPath)
+        FspPosixDeletePath(PosixPath);
+
     return Result;
 }
 
@@ -143,8 +164,11 @@ NTSTATUS fsp_fuse_op_leave(FSP_FILE_SYSTEM *FileSystem,
     context->gid = -1;
 
     context_header = (PVOID)((PUINT8)context - sizeof *context_header);
+    if (0 != context_header->PosixPath)
+        FspPosixDeletePath(context_header->PosixPath);
     context_header->Request = 0;
     context_header->Response = 0;
+    context_header->PosixPath = 0;
 
     FspFileSystemOpLeave(FileSystem, Request, Response);
 
diff --git a/src/dll/fuse/library.h b/src/dll/fuse/library.h
index f6c45cee..5d40d36b 100644
--- a/src/dll/fuse/library.h
+++ b/src/dll/fuse/library.h
@@ -41,6 +41,7 @@ struct fsp_fuse_context_header
 {
     FSP_FSCTL_TRANSACT_REQ *Request;
     FSP_FSCTL_TRANSACT_RSP *Response;
+    char *PosixPath;
     __declspec(align(MEMORY_ALLOCATION_ALIGNMENT)) UINT8 ContextBuf[];
 };