rust: fs: export file type from mode constants

This allows file system modules to use these constants if needed.

Signed-off-by: Wedson Almeida Filho <[email protected]>

Author: wedsonaf

Diff for: rust/kernel/fs.rs

@@ -19,6 +19,33 @@ use macros::{pin_data, pinned_drop};
 #[cfg(CONFIG_BUFFER_HEAD)]
 pub mod buffer;
 
+/// Contains constants related to Linux file modes.
+pub mod mode {
+    /// A bitmask used to the file type from a mode value.
+    pub const S_IFMT: u32 = bindings::S_IFMT;
+
+    /// File type constant for block devices.
+    pub const S_IFBLK: u32 = bindings::S_IFBLK;
+
+    /// File type constant for char devices.
+    pub const S_IFCHR: u32 = bindings::S_IFCHR;
+
+    /// File type constant for directories.
+    pub const S_IFDIR: u32 = bindings::S_IFDIR;
+
+    /// File type constant for pipes.
+    pub const S_IFIFO: u32 = bindings::S_IFIFO;
+
+    /// File type constant for symbolic links.
+    pub const S_IFLNK: u32 = bindings::S_IFLNK;
+
+    /// File type constant for regular files.
+    pub const S_IFREG: u32 = bindings::S_IFREG;
+
+    /// File type constant for sockets.
+    pub const S_IFSOCK: u32 = bindings::S_IFSOCK;
+}
+
 /// Maximum size of an inode.
 pub const MAX_LFS_FILESIZE: i64 = bindings::MAX_LFS_FILESIZE;