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Add try_clone() and FromRawDescriptor for Tube and UnixSeqpacket

Browse source 
BUG=b:179755651
TEST=cargo test

Change-Id: Icf77f7427972b940215a2a4d95aa09ae409e4ff0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2987590
Auto-Submit: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
This commit is contained in:
Chirantan Ekbote 2021-06-25 17:22:52 +09:00 committed by Commit Bot
parent e9778a0b59
commit af9dccf591
2 changed files with 25 additions and 1 deletions
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15
base/src/tube.rs
View file

@ -35,6 +35,8 @@ pub enum Error {
SetRecvTimeout(io::Error),
#[error("failed to create async tube: {0}")]
CreateAsync(cros_async::AsyncError),
#[error("failed to clone UnixSeqpacket: {0}")]
Clone(io::Error),
}
pub type Result<T> = std::result::Result<T, Error>;
@ -68,6 +70,10 @@ impl Tube {
Ok(AsyncTube { inner })
}
pub fn try_clone(&self) -> Result<Self> {
self.socket.try_clone().map(Tube::new).map_err(Error::Clone)
}
pub fn send<T: Serialize>(&self, msg: &T) -> Result<()> {
let msg_serialize = SerializeDescriptors::new(&msg);
let msg_json = serde_json::to_vec(&msg_serialize).map_err(Error::Json)?;
@ -117,6 +123,15 @@ impl Tube {
}
}
impl FromRawDescriptor for Tube {
unsafe fn from_raw_descriptor(descriptor: RawDescriptor) -> Self {
Tube {
socket: UnixSeqpacket::from_raw_descriptor(descriptor),
_unsync_marker: PhantomData,
}
}
}
impl AsRawDescriptor for Tube {
fn as_raw_descriptor(&self) -> RawDescriptor {
self.socket.as_raw_descriptor()

11
sys_util/src/net.rs
View file

@ -23,7 +23,10 @@ use libc::{
};
use serde::{Deserialize, Serialize};
use crate::sock_ctrl_msg::{ScmSocket, SCM_SOCKET_MAX_FD_COUNT};
use crate::{
sock_ctrl_msg::{ScmSocket, SCM_SOCKET_MAX_FD_COUNT},
FromRawDescriptor,
};
use crate::{AsRawDescriptor, RawDescriptor};
/// Assist in handling both IP version 4 and IP version 6.
@ -604,6 +607,12 @@ impl FromRawFd for UnixSeqpacket {
}
}
impl FromRawDescriptor for UnixSeqpacket {
unsafe fn from_raw_descriptor(descriptor: RawDescriptor) -> Self {
Self { fd: descriptor }
}
}
impl AsRawFd for UnixSeqpacket {
fn as_raw_fd(&self) -> RawFd {
self.fd