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-rw-r--r--rust/kernel/str.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 3ed685cb5a3c..a995db36486f 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -321,6 +321,29 @@ where
}
}
+/// Creates a new [`CStr`] from a string literal.
+///
+/// The string literal should not contain any `NUL` bytes.
+///
+/// # Examples
+///
+/// ```
+/// # use kernel::c_str;
+/// # use kernel::str::CStr;
+/// const MY_CSTR: &CStr = c_str!("My awesome CStr!");
+/// ```
+#[macro_export]
+macro_rules! c_str {
+ ($str:expr) => {{
+ const S: &str = concat!($str, "\0");
+ const C: &$crate::str::CStr = match $crate::str::CStr::from_bytes_with_nul(S.as_bytes()) {
+ Ok(v) => v,
+ Err(_) => panic!("string contains interior NUL"),
+ };
+ C
+ }};
+}
+
#[cfg(test)]
mod tests {
use super::*;