This series adds minimal bindings for writing block drivers in Rust and converts the bochs block driver as an example. Some parts (such as the open functions) are still essentially C written in Rust syntax, while other parts already try to provide somewhat idiomatic abstractions.
The main purpose of this series is just to add a starting point for incremental improvements to the bindings; it's clearly not very polished yet and ignores some important points like enforcing the graph lock. Therefore, the main focus in the immediate future after this series should be cleaning up the bochs driver and the bindings it uses rather than adding more drivers. Kevin Wolf (11): rust: Build separate qemu_api_tools and qemu_api_system meson: Add rust_block_ss and link tools with it rust: Add some block layer bindings rust/qemu-api: Add wrappers to run futures in QEMU rust/block: Add empty crate rust/block: Add I/O buffer traits block: Add bdrv_open_blockdev_ref_file() rust/block: Add driver module rust/block: Add read support for block drivers bochs-rs: Add bochs block driver reimplementation in Rust rust/block: Add format probing include/block/block-global-state.h | 4 + include/qemu/coroutine-rust.h | 24 +++ rust/wrapper-system.h | 44 ++++ rust/wrapper.h | 14 +- block.c | 30 ++- util/qemu-co-rust-async.c | 55 +++++ meson.build | 48 ++++- rust/Cargo.lock | 7 + rust/Cargo.toml | 1 + rust/block/Cargo.toml | 15 ++ rust/block/README.md | 3 + rust/block/meson.build | 19 ++ rust/block/src/bochs.rs | 316 +++++++++++++++++++++++++++++ rust/block/src/driver.rs | 309 ++++++++++++++++++++++++++++ rust/block/src/iobuffer.rs | 94 +++++++++ rust/block/src/lib.rs | 5 + rust/hw/char/pl011/meson.build | 3 +- rust/meson.build | 12 +- rust/qemu-api/Cargo.toml | 1 + rust/qemu-api/build.rs | 10 +- rust/qemu-api/meson.build | 71 ++++--- rust/qemu-api/src/bindings.rs | 16 +- rust/qemu-api/src/futures.rs | 78 +++++++ rust/qemu-api/src/lib.rs | 5 + rust/qemu-api/src/prelude.rs | 2 + rust/qemu-api/src/zeroable.rs | 11 + storage-daemon/meson.build | 2 +- util/meson.build | 3 + 28 files changed, 1146 insertions(+), 56 deletions(-) create mode 100644 include/qemu/coroutine-rust.h create mode 100644 rust/wrapper-system.h create mode 100644 util/qemu-co-rust-async.c create mode 100644 rust/block/Cargo.toml create mode 100644 rust/block/README.md create mode 100644 rust/block/meson.build create mode 100644 rust/block/src/bochs.rs create mode 100644 rust/block/src/driver.rs create mode 100644 rust/block/src/iobuffer.rs create mode 100644 rust/block/src/lib.rs create mode 100644 rust/qemu-api/src/futures.rs -- 2.48.1
