Alexandre Julliard : msvcrt: Avoid depending on the mount manager in fstat().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 23ed647773546ab3e0817580f6ac28ed8c948c9d
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=23ed647773546ab3e0817580f...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Wed Mar 17 10:29:28 2021 +0100

msvcrt: Avoid depending on the mount manager in fstat().

Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/msvcrt/file.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index 89d6e7d721f..bf7496cc233 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -1754,7 +1754,6 @@ int CDECL _fstat64(int fd, struct _stat64* buf)
   ioinfo *info = get_ioinfo(fd);
   DWORD dw;
   DWORD type;
-  BY_HANDLE_FILE_INFORMATION hfi;
 
   TRACE(":fd (%d) stat (%p)\n", fd, buf);
   if (info->handle == INVALID_HANDLE_VALUE)
@@ -1771,7 +1770,6 @@ int CDECL _fstat64(int fd, struct _stat64* buf)
     return -1;
   }
 
-  memset(&hfi, 0, sizeof(hfi));
   memset(buf, 0, sizeof(struct _stat64));
   type = GetFileType(info->handle);
   if (type == FILE_TYPE_PIPE)
@@ -1788,25 +1786,30 @@ int CDECL _fstat64(int fd, struct _stat64* buf)
   }
   else /* FILE_TYPE_DISK etc. */
   {
-    if (!GetFileInformationByHandle(info->handle, &hfi))
+    FILE_BASIC_INFORMATION basic_info;
+    FILE_STANDARD_INFORMATION std_info;
+    IO_STATUS_BLOCK io;
+    NTSTATUS status;
+
+    if ((status = NtQueryInformationFile( info->handle, &io, &basic_info, sizeof(basic_info), FileBasicInformation )) ||
+        (status = NtQueryInformationFile( info->handle, &io, &std_info, sizeof(std_info), FileStandardInformation )))
     {
-      WARN(":failed-last error (%d)\n",GetLastError());
+      WARN(":failed-error %x\n",status);
       msvcrt_set_errno(ERROR_INVALID_PARAMETER);
       release_ioinfo(info);
       return -1;
     }
     buf->st_mode = _S_IFREG | 0444;
-    if (!(hfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
+    if (!(basic_info.FileAttributes & FILE_ATTRIBUTE_READONLY))
       buf->st_mode |= 0222;
-    buf->st_size  = ((__int64)hfi.nFileSizeHigh << 32) + hfi.nFileSizeLow;
-    RtlTimeToSecondsSince1970((LARGE_INTEGER *)&hfi.ftLastAccessTime, &dw);
+    buf->st_size  = std_info.EndOfFile.QuadPart;
+    RtlTimeToSecondsSince1970((LARGE_INTEGER *)&basic_info.LastAccessTime, &dw);
     buf->st_atime = dw;
-    RtlTimeToSecondsSince1970((LARGE_INTEGER *)&hfi.ftLastWriteTime, &dw);
+    RtlTimeToSecondsSince1970((LARGE_INTEGER *)&basic_info.LastWriteTime, &dw);
     buf->st_mtime = buf->st_ctime = dw;
-    buf->st_nlink = hfi.nNumberOfLinks;
+    buf->st_nlink = std_info.NumberOfLinks;
+    TRACE(":dwFileAttributes = 0x%x, mode set to 0x%x\n",basic_info.FileAttributes, buf->st_mode);
   }
-  TRACE(":dwFileAttributes = 0x%x, mode set to 0x%x\n",hfi.dwFileAttributes,
-   buf->st_mode);
   release_ioinfo(info);
   return 0;
 }