[PATCH v2 05/19] rust: configfs: replace `kernel::c_str!` with C-Strings

Tamir Duberstein
2025-08-13T15:59:40Z

Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
---
rust/kernel/configfs.rs | 9 +++++----
samples/rust/rust_configfs.rs | 5 ++---
2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/rust/kernel/configfs.rs b/rust/kernel/configfs.rs
index 9fb5ef825e41..69bb1fb53543 100644
--- a/rust/kernel/configfs.rs
+++ b/rust/kernel/configfs.rs
@@ -21,7 +21,6 @@
//!
//! ```ignore
//! use kernel::alloc::flags;
-//! use kernel::c_str;
//! use kernel::configfs_attrs;
//! use kernel::configfs;
//! use kernel::new_mutex;
@@ -50,7 +49,7 @@
//!
//! try_pin_init!(Self {
//! config <- configfs::Subsystem::new(
-//! c_str!("rust_configfs"), item_type, Configuration::new()
+//! c"rust_configfs", item_type, Configuration::new()
//! ),
//! })
//! }
@@ -66,7 +65,7 @@
//! impl Configuration {
//! fn new() -> impl PinInit<Self, Error> {
//! try_pin_init!(Self {
-//! message: c_str!("Hello World\n"),
+//! message: c"Hello World\n",
//! bar <- new_mutex!((KBox::new([0; PAGE_SIZE], flags::GFP_KERNEL)?, 0)),
//! })
//! }
@@ -1000,7 +999,9 @@ macro_rules! configfs_attrs {
static [< $data:upper _ $name:upper _ATTR >]:
$crate::configfs::Attribute<$attr, $data, $data> =
unsafe {
- $crate::configfs::Attribute::new(c_str!(::core::stringify!($name)))
+ $crate::configfs::Attribute::new(
+ $crate::c_str!(::core::stringify!($name)),
+ )
};
)*

diff --git a/samples/rust/rust_configfs.rs b/samples/rust/rust_configfs.rs
index 5005453f874d..ea84c23b784b 100644
--- a/samples/rust/rust_configfs.rs
+++ b/samples/rust/rust_configfs.rs
@@ -3,7 +3,6 @@
//! Rust configfs sample.

use kernel::alloc::flags;
-use kernel::c_str;
use kernel::configfs;
use kernel::configfs_attrs;
use kernel::new_mutex;
@@ -35,7 +34,7 @@ struct Configuration {
impl Configuration {
fn new() -> impl PinInit<Self, Error> {
try_pin_init!(Self {
- message: c_str!("Hello World\n"),
+ message: c"Hello World\n",
bar <- new_mutex!((KBox::new([0; PAGE_SIZE], flags::GFP_KERNEL)?, 0)),
})
}
@@ -61,7 +60,7 @@ fn init(_module: &'static ThisModule) -> impl PinInit<Self, Error> {

try_pin_init!(Self {
config <- configfs::Subsystem::new(
- c_str!("rust_configfs"), item_type, Configuration::new()
+ c"rust_configfs", item_type, Configuration::new()
),
})
}

--
2.50.1