Commit Graph

2 Commits

Author SHA1 Message Date
Miguel Ojeda
7b0c32cbed samples: rust: debugfs: 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 d4a5d397c7 ("samples: rust: Add scoped debugfs
sample driver").

Link: https://patch.msgid.link/20251019213049.2060970-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-10-20 04:04:23 +02:00
Matthew Maurer
d4a5d397c7 samples: rust: Add scoped debugfs sample driver
Adds a new sample driver `rust_scoped_debugfs` that demonstrates the
use of the scoped debugfs APIs.

The driver creates a `control` directory with two write-only files,
`create` and `remove`. Writing a name and a series of numbers to
`create` will create a new subdirectory under a `dynamic` directory.
This new subdirectory will contain files that expose the numbers as
atomic values.

Writing a name to `remove` will remove the corresponding subdirectory
from the `dynamic` directory.

This sample serves as an example of how to use the `debugfs::Scope`
and `debugfs::ScopedDir` APIs to create and manage debugfs entries
that are tied to the lifetime of a data structure.

Signed-off-by: Matthew Maurer <mmaurer@google.com>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250904-debugfs-rust-v11-7-7d12a165685a@google.com
[ Rename "scoped_debugfs" -> "debugfs_scoped", fix up
  Result<(), Error> -> Result. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-09-10 21:05:11 +02:00