1 files changed, 13 insertions, 0 deletions
diff --git a/rust/kernel/fs/file.rs b/rust/kernel/fs/file.rs
index 6adb7a7199ec..3c1f51719804 100644
--- a/rust/kernel/fs/file.rs
+++ b/rust/kernel/fs/file.rs
@@ -9,6 +9,7 @@
 
 use crate::{
     bindings,
+    cred::Credential,
     error::{code::*, Error, Result},
     types::{ARef, AlwaysRefCounted, Opaque},
 };
@@ -308,6 +309,18 @@ impl LocalFile {
         self.inner.get()
     }
 
+    /// Returns the credentials of the task that originally opened the file.
+    pub fn cred(&self) -> &Credential {
+        // SAFETY: It's okay to read the `f_cred` field without synchronization because `f_cred` is
+        // never changed after initialization of the file.
+        let ptr = unsafe { (*self.as_ptr()).f_cred };
+
+        // SAFETY: The signature of this function ensures that the caller will only access the
+        // returned credential while the file is still valid, and the C side ensures that the
+        // credential stays valid at least as long as the file.
+        unsafe { Credential::from_ptr(ptr) }
+    }
+
     /// Returns the flags associated with the file.
     ///
     /// The flags are a combination of the constants in [`flags`].