smbd: handle fake file handles in fdos_mode()

This ensures SMB requests on the quote fake file "$Extend/$Quota" don't hit the
VFS, where specifically in vfs_gpfs we log an error message if we fail to read
the DOS attributes for a file with

  vfs_gpfs_get_dos_attributes: Getting winattrs failed for $Extend/$Quota

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14731

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit e093eaed1046638193d973c39fa9df74e41148d3)

diff --git a/source3/smbd/dosmode.c b/source3/smbd/dosmode.c
index 844f5efe3890d82948c9c887d6d334891544fb0e..791580076540f7ab143d0e49da20d4c2cf1a535a 100644 (file)
--- a/source3/smbd/dosmode.c
+++ b/source3/smbd/dosmode.c
@@ -28,6 +28,7 @@
 #include "lib/param/loadparm.h"
 #include "lib/util/tevent_ntstatus.h"
 #include "lib/util/string_wrappers.h"
+#include "fake_file.h"
 
 static NTSTATUS get_file_handle_for_metadata(connection_struct *conn,
                                const struct smb_filename *smb_fname,
@@ -751,6 +752,10 @@ uint32_t fdos_mode(struct files_struct *fsp)
 
        DBG_DEBUG("%s\n", fsp_str_dbg(fsp));
 
+       if (fsp->fake_file_handle != NULL) {
+               return dosmode_from_fake_filehandle(fsp->fake_file_handle);
+       }
+
        if (!VALID_STAT(fsp->fsp_name->st)) {
                return 0;
        }