uefi: fs: Implement FileType

- Similar to FilePermissions, using bool to represent the bitfield.
- FileType cannot be changed, so no need to worry about converting back
to attribute.
Signed-off-by: Ayush Singh <ayush@beagleboard.org>

Author: Ayush1325

library/std/src/sys/fs/uefi.rs

@@ -1,6 +1,6 @@
 usecrate::ffi::OsString;
 usecrate::fmt;
-usecrate::hash::{Hash,Hasher};
+usecrate::hash::Hash;
 usecrate::io::{self,BorrowedCursor,IoSlice,IoSliceMut,SeekFrom};
 usecrate::path::{Path,PathBuf};
 usecrate::sys::time::SystemTime;
@@ -27,7 +27,9 @@ pub struct FileTimes {}
 // Bool indicates if file is readonly
 pubstructFilePermissions(bool);
 
-pubstructFileType(!);
+#[derive(Clone,Copy,PartialEq,Eq,Hash,Debug)]
+// Bool indicates if directory
+pubstructFileType(bool);
 
 #[derive(Debug)]
 pubstructDirBuilder{}
@@ -95,39 +97,17 @@ impl FileType {
 }
 
 pubfnis_file(&self) -> bool{
-self.0
+!self.is_dir()
 }
 
+// Symlinks are not supported in UEFI
 pubfnis_symlink(&self) -> bool{
-self.0
+false
 }
-}
 
-implCloneforFileType{
-fnclone(&self) -> FileType{
-self.0
-}
-}
-
-implCopyforFileType{}
-
-implPartialEqforFileType{
-fneq(&self,_other:&FileType) -> bool{
-self.0
-}
-}
-
-implEqforFileType{}
-
-implHashforFileType{
-fnhash<H:Hasher>(&self,_h:&mutH){
-self.0
-}
-}
-
-impl fmt::DebugforFileType{
-fnfmt(&self,_f:&mut fmt::Formatter<'_>) -> fmt::Result{
-self.0
+#[expect(dead_code)]
+constfnfrom_attr(attr:u64) -> Self{
+Self(attr & r_efi::protocols::file::DIRECTORY != 0)
 }
 }