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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>
30 lines
733 B
Rust
30 lines
733 B
Rust
// Copyright 2024 Red Hat, Inc.
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// Author(s): Paolo Bonzini <pbonzini@redhat.com>
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// SPDX-License-Identifier: GPL-2.0-or-later
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//! Commonly used traits and types for QEMU.
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pub use crate::bitops::IntegerExt;
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pub use crate::cell::BqlCell;
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pub use crate::cell::BqlRefCell;
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pub use crate::errno;
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pub use crate::qdev::DeviceMethods;
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pub use crate::qom::InterfaceType;
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pub use crate::qom::IsA;
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pub use crate::qom::Object;
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pub use crate::qom::ObjectCast;
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pub use crate::qom::ObjectCastMut;
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pub use crate::qom::ObjectDeref;
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pub use crate::qom::ObjectClassMethods;
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pub use crate::qom::ObjectMethods;
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pub use crate::qom::ObjectType;
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pub use crate::qom_isa;
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pub use crate::sysbus::SysBusDeviceMethods;
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pub use crate::vmstate::VMState;
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