Re: [Libguestfs] [libnbd PATCH v7 0/9] Rust Bindings for Libnbd

On Thu, Aug 10, 2023 at 11:24:27AM +0000, Tage Johansson wrote: I still hope to do more review of both merged patches and this one (in part, to learn more about Rust myself). But my first observation is that you currently have several build failures on different platforms. Here's some CI links summarizing the types of failures I'm seeing, when I try to turn on --enable-rust as part of our CI coverage: On Debian 12 (similar on Ubuntu): https://gitlab.com/ebblake/libnbd/-/jobs/4886374776 line 261: Get:105 http://deb.debian.org/debian bookworm/main amd64 cargo amd64 0.66.0+ds1-1 [3419 kB] line 3717..: Documenting libnbd v0.1.0 (/builds/ebblake/libnbd/rust) error[E0432]: unresolved imports `std::os::fd::AsRawFd`, `std::os::fd::OwnedFd`, `std::os::fd::RawFd` --> src/bindings.rs:30:19 | 30 | use std::os::fd::{AsRawFd, OwnedFd, RawFd}; | ^^^^^^^ ^^^^^^^ ^^^^^ no `RawFd` in `os::fd` | | | | | no `OwnedFd` in `os::fd` | no `AsRawFd` in `os::fd` error[E0412]: cannot find type `c_uint` in this scope --> src/bindings.rs:120:30 | 120 | where F: FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync | ^^^^^^ not found in this scope | help: consider importing one of these items | 24 | use core::ffi::c_uint; | 24 | use libc::c_uint; | 24 | use std::os::raw::c_uint; | ... Line 5248..: error[E0603]: module `fd` is private --> src/bindings.rs:30:14 | 30 | use std::os::fd::{AsRawFd, OwnedFd, RawFd}; | ^^ private module | note: the module `fd` is defined here Line 5270..: Compiling libnbd v0.1.0 (/builds/ebblake/libnbd/rust) error[E0432]: unresolved imports `std::os::fd::AsRawFd`, `std::os::fd::OwnedFd`, `std::os::fd::RawFd` --> src/bindings.rs:30:19 | 30 | use std::os::fd::{AsRawFd, OwnedFd, RawFd}; | ^^^^^^^ ^^^^^^^ ^^^^^ no `RawFd` in `os::fd` | | | | | no `OwnedFd` in `os::fd` | no `AsRawFd` in `os::fd` Line 7120..: error[E0599]: no method named `cast_mut` found for raw pointer `*const i8` in the current scope --> src/bindings.rs:4231:48 | 4231 | queries_ffi_c_strs.iter().map(|x| x.as_ptr().cast_mut()).collect(); | ^^^^^^^^ help: there is an associated function with a similar name: `as_mut` | = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior On to the next one. Centos-stream-8 (and almalinux): https://gitlab.com/ebblake/libnbd/-/jobs/4886374755 Line 18: cargo x86_64 1.69.0-1.module_el8+430+506bc849 appstream 4.9 M https://gitlab.com/ebblake/libnbd/-/jobs/4886374755/artifacts/external_fi... Compiling libnbd v0.1.0 (/builds/ebblake/libnbd/rust) Compiling tempfile v3.7.1 error[E0658]: use of unstable library feature 'arc_into_inner' --> tests/test_245_opt_list_meta_queries.rs:49:16 | 49 | let info = Arc::into_inner(info).unwrap().into_inner().unwrap(); | ^^^^^^^^^^^^^^^ | = note: see issue #106894 <https://github.com/rust-lang/rust/issues/106894> for more information -- Eric Blake, Principal Software Engineer Red Hat, Inc. Virtualization: qemu.org | libguestfs.org