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-rw-r--r--rust/kernel/debugfs.rs37
1 files changed, 35 insertions, 2 deletions
diff --git a/rust/kernel/debugfs.rs b/rust/kernel/debugfs.rs
index 988aacdadbfa..5d77e0cd393c 100644
--- a/rust/kernel/debugfs.rs
+++ b/rust/kernel/debugfs.rs
@@ -16,10 +16,10 @@ use core::marker::PhantomPinned;
use core::ops::Deref;
mod traits;
-pub use traits::Writer;
+pub use traits::{Reader, Writer};
mod file_ops;
-use file_ops::{FileOps, ReadFile};
+use file_ops::{FileOps, ReadFile, ReadWriteFile, WriteFile};
#[cfg(CONFIG_DEBUG_FS)]
mod entry;
#[cfg(CONFIG_DEBUG_FS)]
@@ -142,6 +142,39 @@ impl Dir {
let file_ops = &<T as ReadFile<_>>::FILE_OPS;
self.create_file(name, data, file_ops)
}
+
+ /// Creates a read-write file in this directory.
+ ///
+ /// Reading the file uses the [`Writer`] implementation.
+ /// Writing to the file uses the [`Reader`] implementation.
+ pub fn read_write_file<'a, T, E: 'a>(
+ &'a self,
+ name: &'a CStr,
+ data: impl PinInit<T, E> + 'a,
+ ) -> impl PinInit<File<T>, E> + 'a
+ where
+ T: Writer + Reader + Send + Sync + 'static,
+ {
+ let file_ops = &<T as ReadWriteFile<_>>::FILE_OPS;
+ self.create_file(name, data, file_ops)
+ }
+
+ /// Creates a write-only file in this directory.
+ ///
+ /// The file owns its backing data. Writing to the file uses the [`Reader`]
+ /// implementation.
+ ///
+ /// The file is removed when the returned [`File`] is dropped.
+ pub fn write_only_file<'a, T, E: 'a>(
+ &'a self,
+ name: &'a CStr,
+ data: impl PinInit<T, E> + 'a,
+ ) -> impl PinInit<File<T>, E> + 'a
+ where
+ T: Reader + Send + Sync + 'static,
+ {
+ self.create_file(name, data, &T::FILE_OPS)
+ }
}
#[pin_data]