linux-kernel - [PATCH v18 04/16] rust_binder: use `core::ffi::CStr` method names

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Message-Id: <20251018-cstr-core-v18-4-ef3d02760804@gmail.com>
Date: Sat, 18 Oct 2025 13:45:15 -0400
From: Tamir Duberstein <tamird@...il.com>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
 Danilo Krummrich <dakr@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
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Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 llvm@...ts.linux.dev, linux-fsdevel@...r.kernel.org, 
 linux-block@...r.kernel.org, linux-pci@...r.kernel.org, 
 linux-pm@...r.kernel.org, linux-clk@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, Tamir Duberstein <tamird@...il.com>
Subject: [PATCH v18 04/16] rust_binder: use `core::ffi::CStr` method names

Prepare for `core::ffi::CStr` taking the place of `kernel::str::CStr` by
avoiding methods that only exist on the latter.

This backslid in commit eafedbc7c050 ("rust_binder: add Rust Binder
driver").

Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
Signed-off-by: Tamir Duberstein <tamird@...il.com>
---
 drivers/android/binder/stats.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/android/binder/stats.rs b/drivers/android/binder/stats.rs
index a83ec111d2cb..10c43679d5c3 100644
--- a/drivers/android/binder/stats.rs
+++ b/drivers/android/binder/stats.rs
@@ -72,7 +72,7 @@ pub(super) fn command_string(i: usize) -> &'static str {
         // SAFETY: Accessing `binder_command_strings` is always safe.
         let c_str_ptr = unsafe { binder_command_strings[i] };
         // SAFETY: The `binder_command_strings` array only contains nul-terminated strings.
-        let bytes = unsafe { CStr::from_char_ptr(c_str_ptr) }.as_bytes();
+        let bytes = unsafe { CStr::from_char_ptr(c_str_ptr) }.to_bytes();
         // SAFETY: The `binder_command_strings` array only contains strings with ascii-chars.
         unsafe { from_utf8_unchecked(bytes) }
     }
@@ -81,7 +81,7 @@ pub(super) fn return_string(i: usize) -> &'static str {
         // SAFETY: Accessing `binder_return_strings` is always safe.
         let c_str_ptr = unsafe { binder_return_strings[i] };
         // SAFETY: The `binder_command_strings` array only contains nul-terminated strings.
-        let bytes = unsafe { CStr::from_char_ptr(c_str_ptr) }.as_bytes();
+        let bytes = unsafe { CStr::from_char_ptr(c_str_ptr) }.to_bytes();
         // SAFETY: The `binder_command_strings` array only contains strings with ascii-chars.
         unsafe { from_utf8_unchecked(bytes) }
     }

-- 
2.51.1