1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/nova-core/util.rs b/drivers/gpu/nova-core/util.rs
new file mode 100644
index 000000000000..4b503249a3ef
--- /dev/null
+++ b/drivers/gpu/nova-core/util.rs
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/// Converts a null-terminated byte slice to a string, or `None` if the array does not
+/// contains any null byte or contains invalid characters.
+///
+/// Contrary to [`kernel::str::CStr::from_bytes_with_nul`], the null byte can be anywhere in the
+/// slice, and not only in the last position.
+pub(crate) fn str_from_null_terminated(bytes: &[u8]) -> Option<&str> {
+    use kernel::str::CStr;
+
+    bytes
+        .iter()
+        .position(|&b| b == 0)
+        .and_then(|null_pos| CStr::from_bytes_with_nul(&bytes[..=null_pos]).ok())
+        .and_then(|cstr| cstr.to_str().ok())
+}