mirror of
https://chromium.googlesource.com/crosvm/crosvm
synced 2025-02-06 10:32:10 +00:00
19ad1f3d3a
The only device that used user_command was Serial. This change makes
Serial device use a thread to read from its input instead of using
user_command.
BUG=chromium:1033787
TEST=./build_test
run crosvm with stdio serial with and without sandbox
Change-Id: Ia0f2ee83d94ad2fee3f1f4f89aa734b976e33507
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1966435
Tested-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Auto-Submit: Zach Reizner <zachr@chromium.org>
70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
// Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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use std::fmt::{self, Display};
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use std::io;
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use std::result;
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use libc::__errno_location;
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/// An error number, retrieved from errno (man 3 errno), set by a libc
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/// function that returned an error.
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub struct Error(i32);
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pub type Result<T> = result::Result<T, Error>;
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impl Error {
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/// Constructs a new error with the given errno.
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pub fn new(e: i32) -> Error {
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Error(e)
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}
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/// Constructs an error from the current errno.
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///
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/// The result of this only has any meaning just after a libc call that returned a value
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/// indicating errno was set.
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pub fn last() -> Error {
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Error(unsafe { *__errno_location() })
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}
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/// Gets the errno for this error
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pub fn errno(self) -> i32 {
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self.0
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}
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}
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impl From<io::Error> for Error {
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fn from(e: io::Error) -> Self {
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Error::new(e.raw_os_error().unwrap_or_default())
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}
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}
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impl From<Error> for io::Error {
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fn from(e: Error) -> io::Error {
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io::Error::from_raw_os_error(e.0)
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}
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}
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impl std::error::Error for Error {}
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impl Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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Into::<io::Error>::into(*self).fmt(f)
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}
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}
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/// Returns the last errno as a Result that is always an error.
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pub fn errno_result<T>() -> Result<T> {
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Err(Error::last())
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}
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/// Sets errno to given error code.
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/// Only defined when we compile tests as normal code does not
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/// normally need set errno.
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#[cfg(test)]
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pub fn set_errno(e: i32) {
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unsafe {
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*__errno_location() = e;
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}
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}
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