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#[macro_use]
extern crate cfg_if;
#[cfg_attr(not(any(target_os = "redox")), macro_use)]
extern crate nix;
#[macro_use]
mod common;
mod mount;
mod sys;
#[cfg(not(target_os = "redox"))]
mod test_dir;
mod test_errno;
mod test_fcntl;
#[cfg(linux_android)]
mod test_kmod;
#[cfg(any(
freebsdlike,
all(target_os = "linux", not(target_env = "ohos")),
target_os = "netbsd"
))]
mod test_mq;
#[cfg(not(target_os = "redox"))]
mod test_net;
mod test_nix_path;
mod test_poll;
#[cfg(not(any(
target_os = "redox",
target_os = "fuchsia",
target_os = "haiku"
)))]
mod test_pty;
#[cfg(any(
linux_android,
target_os = "dragonfly",
all(target_os = "freebsd", fbsd14),
))]
mod test_sched;
#[cfg(any(linux_android, freebsdlike, apple_targets, solarish))]
mod test_sendfile;
#[cfg(any(
target_os = "freebsd",
target_os = "haiku",
target_os = "linux",
target_os = "netbsd",
apple_targets
))]
mod test_spawn;
mod test_syslog;
mod test_time;
mod test_unistd;
#[cfg(feature = "fs")]
use nix::unistd::{chdir, getcwd};
#[cfg(any(feature = "fs",feature = "term"))]
use nix::unistd::read;
use parking_lot::{Mutex, RwLock, RwLockWriteGuard};
use std::os::unix::io::AsFd;
use std::path::PathBuf;
/// Helper function analogous to `std::io::Read::read_exact`, but for `Fd`s
#[cfg(any(feature = "fs",feature = "term"))]
fn read_exact<Fd: AsFd>(f: Fd, buf: &mut [u8]) {
let mut len = 0;
while len < buf.len() {
// get_mut would be better than split_at_mut, but it requires nightly
let (_, remaining) = buf.split_at_mut(len);
len += read(&f, remaining).unwrap();
}
}
/// Any test that creates child processes or can be affected by child processes
/// must grab this mutex, regardless of what it does with those children.
///
/// It must hold the mutex until the child processes are waited upon.
pub static FORK_MTX: Mutex<()> = Mutex::new(());
/// Any test that changes the process's current working directory must grab
/// the RwLock exclusively. Any process that cares about the current
/// working directory must grab it shared.
pub static CWD_LOCK: RwLock<()> = RwLock::new(());
/// Any test that changes the process's supplementary groups must grab this
/// mutex
pub static GROUPS_MTX: Mutex<()> = Mutex::new(());
/// Any tests that loads or unloads kernel modules must grab this mutex
pub static KMOD_MTX: Mutex<()> = Mutex::new(());
/// Any test that calls ptsname(3) must grab this mutex.
pub static PTSNAME_MTX: Mutex<()> = Mutex::new(());
/// Any test that alters signal handling must grab this mutex.
pub static SIGNAL_MTX: Mutex<()> = Mutex::new(());
/// RAII object that restores a test's original directory on drop
#[cfg(feature = "fs")]
struct DirRestore<'a> {
d: PathBuf,
_g: RwLockWriteGuard<'a, ()>,
}
#[cfg(feature = "fs")]
impl DirRestore<'_> {
fn new() -> Self {
let guard = crate::CWD_LOCK.write();
DirRestore {
_g: guard,
d: getcwd().unwrap(),
}
}
}
#[cfg(feature = "fs")]
impl Drop for DirRestore<'_> {
fn drop(&mut self) {
let r = chdir(&self.d);
if std::thread::panicking() {
r.unwrap();
}
}
}
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