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|
use crate::error::*;
use std::os::unix::io::{AsRawFd as _, FromRawFd as _};
use std::os::unix::process::CommandExt as _;
pub struct Command {
command: std::process::Command,
}
impl Command {
pub fn new<S: AsRef<std::ffi::OsStr>>(program: S) -> Result<Self> {
let command = std::process::Command::new(program);
Ok(Self { command })
}
pub fn arg<S: AsRef<std::ffi::OsStr>>(&mut self, arg: S) -> &mut Self {
self.command.arg(arg);
self
}
pub fn args<I, S>(&mut self, args: I) -> &mut Self
where
I: IntoIterator<Item = S>,
S: AsRef<std::ffi::OsStr>,
{
self.command.args(args);
self
}
pub fn env<K, V>(&mut self, key: K, val: V) -> &mut Self
where
K: AsRef<std::ffi::OsStr>,
V: AsRef<std::ffi::OsStr>,
{
self.command.env(key, val);
self
}
pub fn envs<I, K, V>(&mut self, vars: I) -> &mut Self
where
I: IntoIterator<Item = (K, V)>,
K: AsRef<std::ffi::OsStr>,
V: AsRef<std::ffi::OsStr>,
{
self.command.envs(vars);
self
}
pub fn env_remove<K: AsRef<std::ffi::OsStr>>(
&mut self,
key: K,
) -> &mut Self {
self.command.env_remove(key);
self
}
pub fn env_clear(&mut self) -> &mut Self {
self.command.env_clear();
self
}
pub fn current_dir<P: AsRef<std::path::Path>>(
&mut self,
dir: P,
) -> &mut Self {
self.command.current_dir(dir);
self
}
pub fn uid(&mut self, id: u32) -> &mut Self {
self.command.uid(id);
self
}
pub fn gid(&mut self, id: u32) -> &mut Self {
self.command.gid(id);
self
}
pub fn spawn(&mut self) -> Result<Child> {
let pty = crate::pty::Pty::new()?;
let pt_fd = pty.pt().as_raw_fd();
let pts = pty.pts()?;
let pts_fd = pts.as_raw_fd();
self.command
.stdin(unsafe { std::process::Stdio::from_raw_fd(pts_fd) })
.stdout(unsafe { std::process::Stdio::from_raw_fd(pts_fd) })
.stderr(unsafe { std::process::Stdio::from_raw_fd(pts_fd) });
unsafe {
self.command.pre_exec(move || {
// XXX unwrap
nix::unistd::close(pt_fd)
.map_err(|e| e.as_errno().unwrap())?;
nix::unistd::close(pts_fd)
.map_err(|e| e.as_errno().unwrap())?;
Ok(())
});
}
let child = self.command.spawn()?;
Ok(Child { child, pty })
}
}
pub struct Child {
child: std::process::Child,
pty: crate::pty::Pty,
}
impl Child {
pub fn pty(&self) -> &std::fs::File {
self.pty.pt()
}
}
impl std::ops::Deref for Child {
type Target = std::process::Child;
fn deref(&self) -> &Self::Target {
&self.child
}
}
impl std::ops::DerefMut for Child {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.child
}
}
|
