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linux/samples/rust/rust_misc_device.rs

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samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: fix markup in top-level docs The meaning of /// is to document the thing that comes after it, so currently the example is documentation for the `use core::pin::Pin;` statement. To write top-level docs (and have them rendered as such in the html by rustdoc), use //! instead. This does not change the contents of the docs at all. The only change is changing /// to //!. Signed-off-by: Alice Ryhl <aliceryhl@google.com> Fixes: 8d9b095b8f89 ("samples: rust_misc_device: Provide an example C program to exercise functionality") Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Christian Schrefl <chrisi.schrefl@gmail.com> Link: https://lore.kernel.org/r/20250313-rust_misc_device_tld-v1-1-a519bced9a6d@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-13 08:52:44 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Expand the sample to support read()ing from userspace A userland application can now operate on the char device with read() in order to consume a locally held buffer. Memory for the buffer is to be provisioned and the buffer populated in its subsequently provided write() counterpart. Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250822-iov-iter-v5-5-6ce4819c2977@google.com
2025-08-22 08:42:36 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust_misc_device: Expand the sample to support read()ing from userspace A userland application can now operate on the char device with read() in order to consume a locally held buffer. Memory for the buffer is to be provisioned and the buffer populated in its subsequently provided write() counterpart. Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250822-iov-iter-v5-5-6ce4819c2977@google.com
2025-08-22 08:42:36 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
rust: miscdevice: update ARef import to sync::aref Update the import of `ARef` in misc_device sample to use `sync::aref` instead of `types`. This is part of the ongoing effort to move `ARef` and `AlwaysRefCounted` to the `sync` module for better modularity and type organization. Suggested-by: Benno Lossin <lossin@kernel.org> Link: https://github.com/Rust-for-Linux/linux/issues/1173 Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Link: https://lore.kernel.org/r/20250818132806.134248-1-shankari.ak0208@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-18 18:58:06 +05:30
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
rust: module: introduce `authors` key In the `module!` macro, the `author` field is currently of type `String`. Since modules can have multiple authors, this limitation prevents specifying more than one. Add an `authors` field as `Option<Vec<String>>` to allow creating modules with multiple authors, and change the documentation and all current users to use it. Eventually, the single `author` field may be removed. [ The `modinfo` key needs to still be `author`; otherwise, tooling may not work properly, e.g.: $ modinfo --author samples/rust/rust_print.ko Rust for Linux Contributors I have also kept the original `author` field (undocumented), so that we can drop it more easily in a kernel cycle or two. - Miguel ] Suggested-by: Miguel Ojeda <ojeda@kernel.org> Link: https://github.com/Rust-for-Linux/linux/issues/244 Reviewed-by: Charalampos Mitrodimas <charmitro@posteo.net> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Signed-off-by: Guilherme Giacomo Simoes <trintaeoitogc@gmail.com> Link: https://lore.kernel.org/r/20250309175712.845622-2-trintaeoitogc@gmail.com [ Fixed `modinfo` key. Kept `author` field. Reworded message accordingly. Updated my email. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-03-09 14:57:11 -03:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust_misc_device: Expand the sample to support read()ing from userspace A userland application can now operate on the char device with read() in order to consume a locally held buffer. Memory for the buffer is to be provisioned and the buffer populated in its subsequently provided write() counterpart. Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250822-iov-iter-v5-5-6ce4819c2977@google.com
2025-08-22 08:42:36 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust_misc_device: Expand the sample to support read()ing from userspace A userland application can now operate on the char device with read() in order to consume a locally held buffer. Memory for the buffer is to be provisioned and the buffer populated in its subsequently provided write() counterpart. Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250822-iov-iter-v5-5-6ce4819c2977@google.com
2025-08-22 08:42:36 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Expand the sample to support read()ing from userspace A userland application can now operate on the char device with read() in order to consume a locally held buffer. Memory for the buffer is to be provisioned and the buffer populated in its subsequently provided write() counterpart. Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250822-iov-iter-v5-5-6ce4819c2977@google.com
2025-08-22 08:42:36 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
rust: uaccess: use newtype for user pointers Currently, Rust code uses a typedef for unsigned long to represent userspace addresses. This is unfortunate because it means that userspace addresses could accidentally be mixed up with other integers. To alleviate that, we introduce a new UserPtr struct that wraps a raw pointer to represent a userspace address. By using a struct, type checking enforces that userspace addresses cannot be mixed up with anything else. This is similar to the __user annotation in C that detects cases where user pointers are mixed with non-user pointers. Note that unlike __user pointers in C, this type is just a pointer without a target type. This means that it can't detect cases such as mixing up which struct this user pointer references. However, that is okay due to the way this is intended to be used - generally, you create a UserPtr in your ioctl callback from the provided usize *before* dispatching on which ioctl is in use, and then after dispatching on the ioctl you pass the UserPtr into a UserSliceReader or UserSliceWriter; selecting the target type does not happen until you have obtained the UserSliceReader/Writer. The UserPtr type is not marked with #[derive(Debug)], which means that it's not possible to print values of this type. This avoids ASLR leakage. The type is added to the prelude as it is a fairly fundamental type similar to c_int. The wrapping_add() method is renamed to wrapping_byte_add() for consistency with the method name found on raw pointers. Reviewed-by: Benno Lossin <lossin@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Christian Schrefl <chrisi.schrefl@gmail.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250616-userptr-newtype-v3-1-5ff7b2d18d9e@google.com [ Reworded title. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-06-16 13:45:57 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00
samples: rust: Provide example using the new Rust MiscDevice abstraction This sample driver demonstrates the following basic operations: * Register a Misc Device * Create /dev/rust-misc-device * Provide open call-back for the aforementioned character device * Operate on the character device via a simple ioctl() * Provide close call-back for the character device Signed-off-by: Lee Jones <lee@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:07 +00:00
samples: rust_misc_device: Demonstrate additional get/set value functionality Expand the complexity of the sample driver by providing the ability to get and set an integer. The value is protected by a mutex. Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241213134715.601415-4-lee@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-13 13:47:08 +00:00