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dll: FspFileSystemOpenCheck

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This commit is contained in:
Bill Zissimopoulos 2016-01-20 20:24:14 -08:00
parent e8cba8dd81
commit 29bb7f2195
1 changed files with 18 additions and 6 deletions
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24
src/dll/create.c
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@ -257,8 +257,19 @@ NTSTATUS FspFileSystemOpenCheck(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
BOOLEAN AllowTraverseCheck, PDWORD PGrantedAccess)
{
return FspAccessCheck(FileSystem, Request, FALSE, AllowTraverseCheck,
Request->Req.Create.DesiredAccess, PGrantedAccess);
NTSTATUS Result;
Result = FspAccessCheck(FileSystem, Request, FALSE, AllowTraverseCheck,
Request->Req.Create.DesiredAccess |
((Request->Req.Create.CreateOptions & FILE_DELETE_ON_CLOSE) ? DELETE : 0),
PGrantedAccess);
if (NT_SUCCESS(Result))
{
if (0 == (Request->Req.Create.DesiredAccess & MAXIMUM_ALLOWED))
*PGrantedAccess &= ~DELETE | (Request->Req.Create.DesiredAccess & DELETE);
}
return Result;
}
static inline
@ -270,14 +281,15 @@ NTSTATUS FspFileSystemOverwriteCheck(FSP_FILE_SYSTEM *FileSystem,
BOOLEAN Supersede = FILE_SUPERSEDE == ((Request->Req.Create.CreateOptions >> 24) & 0xff);
Result = FspAccessCheck(FileSystem, Request, FALSE, AllowTraverseCheck,
Request->Req.Create.DesiredAccess | (Supersede ? DELETE : FILE_WRITE_DATA),
Request->Req.Create.DesiredAccess |
(Supersede ? DELETE : FILE_WRITE_DATA) |
((Request->Req.Create.CreateOptions & FILE_DELETE_ON_CLOSE) ? DELETE : 0),
PGrantedAccess);
if (NT_SUCCESS(Result))
{
if (0 == (Request->Req.Create.DesiredAccess & MAXIMUM_ALLOWED))
*PGrantedAccess &= Supersede ?
(~DELETE | (Request->Req.Create.DesiredAccess & DELETE)) :
(~FILE_WRITE_DATA | (Request->Req.Create.DesiredAccess & FILE_WRITE_DATA));
*PGrantedAccess &= ~(DELETE | FILE_WRITE_DATA) |
(Request->Req.Create.DesiredAccess & (DELETE | FILE_WRITE_DATA));
}
return Result;