fishinabarrel/linux-kernel-module-rust

Add poll to FIleOperations

Open

#232 opened on Aug 9, 2020

View on GitHub
 (0 comments) (0 reactions) (0 assignees)Rust (122 forks)github user discovery
enhancementgood first issue

Repository metrics

Stars
 (1,340 stars)
PR merge metrics
 (No merged PRs in 30d)

Description

(Split out from #164)

There's a few moving pieces here:

  • Adding the actual trait and setting up the function pointer
  • Figuring out a safe API for poll_wait -- the lifetimes are pretty tricky, might be best to start with just the &'static case.
  • This may require adding a basic wait queue API at the same time, so we have some way to test this!

Contributor guide

Research direction
Study the existing FileOperations trait implementation in the kernel module framework. Understand the poll mechanism in Linux and how Rust represents function pointers. For poll wait, examine the lifetime requirements and consider a safe wrapper. Look at existing wait queue implementations in the Rust kernel module ecosystem to test the poll functionality.
Tech stack
rust
Domain
operating systems
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
RustLinux kernel conceptsunsafe Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25