Lee Jones and Greg Kroah-Hartman
8d9b095b8f
samples: rust_misc_device: Provide an example C program to exercise functionality
...
Here is the expected output (manually spliced together):
USERSPACE: Opening /dev/rust-misc-device for reading and writing
KERNEL: rust_misc_device: Opening Rust Misc Device Sample
USERSPACE: Calling Hello
KERNEL: rust_misc_device: IOCTLing Rust Misc Device Sample
KERNEL: rust_misc_device: -> Hello from the Rust Misc Device
USERSPACE: Fetching initial value
KERNEL: rust_misc_device: IOCTLing Rust Misc Device Sample
KERNEL: rust_misc_device: -> Copying data to userspace (value: 0)
USERSPACE: Submitting new value (1)
KERNEL: rust_misc_device: IOCTLing Rust Misc Device Sample
KERNEL: rust_misc_device: -> Copying data from userspace (value: 1)
USERSPACE: Fetching new value
KERNEL: rust_misc_device: IOCTLing Rust Misc Device Sample
KERNEL: rust_misc_device: -> Copying data to userspace (value: 1)
USERSPACE: Attempting to call in to an non-existent IOCTL
KERNEL: rust_misc_device: IOCTLing Rust Misc Device Sample
KERNEL: rust_misc_device: -> IOCTL not recognised: 20992
USERSPACE: ioctl: Succeeded to fail - this was expected: Inappropriate ioctl for device
USERSPACE: Closing /dev/rust-misc-device
KERNEL: rust_misc_device: Exiting the Rust Misc Device Sample
USERSPACE: Success
Signed-off-by: Lee Jones <lee@kernel.org >
Link: https://lore.kernel.org/r/20241213134715.601415-6-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2024-12-16 16:12:56 +01:00
Lee Jones and Greg Kroah-Hartman
42523ceba5
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 >
2024-12-16 16:12:53 +01:00
Lee Jones and Greg Kroah-Hartman
fdb1ac6c30
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 >
2024-12-16 16:12:45 +01:00
Lee JonesandGreg Kroah-Hartman