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use super::FORK_MTX;
use nix::errno::Errno;
use nix::spawn::{self, PosixSpawnAttr, PosixSpawnFileActions};
use nix::sys::signal;
use nix::sys::wait::{waitpid, WaitPidFlag, WaitStatus};
use std::ffi::{CStr, CString};
/// Helper function to find a binary in the $PATH
fn which(exe_name: &str) -> Option<std::path::PathBuf> {
std::env::var_os("PATH").and_then(|paths| {
std::env::split_paths(&paths)
.filter_map(|dir| {
let full_path = dir.join(exe_name);
if full_path.is_file() {
Some(full_path)
} else {
None
}
})
.next()
})
}
#[test]
fn spawn_true() {
let _guard = FORK_MTX.lock();
let bin = which("true").unwrap();
let args = &[
CString::new("true").unwrap(),
CString::new("story").unwrap(),
];
let vars: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let pid =
spawn::posix_spawn(bin.as_path(), &actions, &attr, args, vars).unwrap();
let status = waitpid(pid, Some(WaitPidFlag::empty())).unwrap();
match status {
WaitStatus::Exited(wpid, ret) => {
assert_eq!(pid, wpid);
assert_eq!(ret, 0);
}
_ => {
panic!("Invalid WaitStatus");
}
};
}
#[test]
fn spawn_sleep() {
let _guard = FORK_MTX.lock();
let bin = which("sleep").unwrap();
let args = &[CString::new("sleep").unwrap(), CString::new("30").unwrap()];
let vars: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let pid =
spawn::posix_spawn(bin.as_path(), &actions, &attr, args, vars).unwrap();
let status =
waitpid(pid, WaitPidFlag::from_bits(WaitPidFlag::WNOHANG.bits()))
.unwrap();
match status {
WaitStatus::StillAlive => {}
_ => {
panic!("Invalid WaitStatus");
}
};
signal::kill(pid, signal::SIGTERM).unwrap();
let status = waitpid(pid, Some(WaitPidFlag::empty())).unwrap();
match status {
WaitStatus::Signaled(wpid, wsignal, _) => {
assert_eq!(pid, wpid);
assert_eq!(wsignal, signal::SIGTERM);
}
_ => {
panic!("Invalid WaitStatus");
}
};
}
#[test]
// `posix_spawn(path_not_exist)` succeeds under QEMU, so ignore the test. No need
// to investigate the root cause, this test still works in native environments, which
// is sufficient to test the binding.
#[cfg_attr(qemu, ignore)]
fn spawn_cmd_does_not_exist() {
let _guard = FORK_MTX.lock();
let args = &[CString::new("buzz").unwrap()];
let envs: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let bin = "2b7433c4-523b-470c-abb5-d7ee9fd295d5-fdasf";
let errno =
spawn::posix_spawn(bin, &actions, &attr, args, envs).unwrap_err();
assert_eq!(errno, Errno::ENOENT);
}
#[test]
fn spawnp_true() {
let _guard = FORK_MTX.lock();
let bin = &CString::new("true").unwrap();
let args = &[
CString::new("true").unwrap(),
CString::new("story").unwrap(),
];
let vars: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let pid = spawn::posix_spawnp(bin, &actions, &attr, args, vars).unwrap();
let status = waitpid(pid, Some(WaitPidFlag::empty())).unwrap();
match status {
WaitStatus::Exited(wpid, ret) => {
assert_eq!(pid, wpid);
assert_eq!(ret, 0);
}
_ => {
panic!("Invalid WaitStatus");
}
};
}
#[test]
fn spawnp_sleep() {
let _guard = FORK_MTX.lock();
let bin = &CString::new("sleep").unwrap();
let args = &[CString::new("sleep").unwrap(), CString::new("30").unwrap()];
let vars: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let pid = spawn::posix_spawnp(bin, &actions, &attr, args, vars).unwrap();
let status =
waitpid(pid, WaitPidFlag::from_bits(WaitPidFlag::WNOHANG.bits()))
.unwrap();
match status {
WaitStatus::StillAlive => {}
_ => {
panic!("Invalid WaitStatus");
}
};
signal::kill(pid, signal::SIGTERM).unwrap();
let status = waitpid(pid, Some(WaitPidFlag::empty())).unwrap();
match status {
WaitStatus::Signaled(wpid, wsignal, _) => {
assert_eq!(pid, wpid);
assert_eq!(wsignal, signal::SIGTERM);
}
_ => {
panic!("Invalid WaitStatus");
}
};
}
#[test]
// `posix_spawnp(bin_not_exist)` succeeds under QEMU, so ignore the test. No need
// to investigate the root cause, this test still works in native environments, which
// is sufficient to test the binding.
#[cfg_attr(qemu, ignore)]
fn spawnp_cmd_does_not_exist() {
let _guard = FORK_MTX.lock();
let args = &[CString::new("buzz").unwrap()];
let envs: &[CString] = &[];
let actions = PosixSpawnFileActions::init().unwrap();
let attr = PosixSpawnAttr::init().unwrap();
let bin = CStr::from_bytes_with_nul(
"2b7433c4-523b-470c-abb5-d7ee9fd295d5-fdasf\0".as_bytes(),
)
.unwrap();
let errno =
spawn::posix_spawnp(bin, &actions, &attr, args, envs).unwrap_err();
assert_eq!(errno, Errno::ENOENT);
}