xemu/rust at 8a420dd109b9e4e2244cfa32bc92829093268b3e - xemu

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Paolo Bonzini 8a420dd109 rust: add module to convert between success/-errno and io::Result

It is a common convention in QEMU to return a positive value in case of
success, and a negated errno value in case of error.  Unfortunately,
using errno portably in Rust is a bit complicated; on Unix the errno
values are supported natively by io::Error, but on Windows they are not;
so, use the libc crate.

This is a set of utility functions that are used by both chardev and
block layer bindings.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2025-02-25 16:18:08 +01:00