pub mod common;
use std::{fs, mem, os::fd::AsFd as _, process, slice, time::Duration};
use dope_sys::{
Errno,
io::{
file::{self, Mode},
request,
socket::{Domain, Socket as _, addr},
},
kernel::{self, errno::Source as _},
ring::{Source, enter::Enter},
};
use dope_uring::Uring;
use crate::common::{
Directory,
layout::{Aligned, encoded},
};
type Borrowed<'a> = <Uring as file::File>::Request<'a>;
type Offset = file::Offset;
type Timeout = <<Uring as Source>::Enter<'static, ()> as Enter>::Timeout;
#[test]
fn cpu_bounds() {
use dope_sys::thread::Thread as _;
let expected: Vec<_> = Uring::current().expect("available CPUs").collect();
let mut cpus = Uring::current().expect("same thread affinity");
let mut expected = expected.into_iter();
let mut front = true;
while expected.len() != 0 {
assert_eq!(cpus.len(), expected.len());
assert_eq!(cpus.size_hint(), (expected.len(), Some(expected.len())));
let actual = if front { cpus.next() } else { cpus.next_back() };
let wanted = if front {
expected.next()
} else {
expected.next_back()
};
assert_eq!(actual, wanted);
front = !front;
}
assert_eq!(cpus.len(), 0);
assert_eq!(cpus.size_hint(), (0, Some(0)));
assert_eq!(cpus.next(), None);
assert_eq!(cpus.next_back(), None);
assert_eq!(cpus.next(), None);
}
#[test]
fn mapping_layouts() {
use dope_sys::memory::Error;
assert!(matches!(
Uring::layout::<u8>(0),
Err(Error::Length {
element: 1,
count: 0
})
));
assert!(matches!(
Uring::layout::<()>(usize::MAX),
Err(Error::Length {
element: 0,
count: usize::MAX
})
));
let count = isize::MAX as usize + 1;
assert!(matches!(
Uring::layout::<u8>(count),
Err(Error::Length { element: 1, count: actual }) if actual == count
));
let count = isize::MAX as usize / mem::size_of::<u64>() + 1;
assert!(matches!(
Uring::layout::<u64>(count),
Err(Error::Length { element: 8, count: actual }) if actual == count
));
assert!(matches!(
Uring::layout::<u64>(usize::MAX),
Err(Error::Length {
element: 8,
count: usize::MAX
})
));
assert!(matches!(
Uring::layout::<Aligned>(0),
Err(Error::Length {
element: 8192,
count: 0
})
));
assert!(matches!(
Uring::layout::<Aligned>(usize::MAX),
Err(Error::Length {
element: 8192,
count: usize::MAX
})
));
assert!(matches!(
Uring::layout::<Aligned>(1),
Err(Error::Alignment {
element: 8192,
supported: 4096
})
));
}
#[test]
fn mapping_bounds() {
for count in [1, 4096, isize::MAX as usize] {
assert_eq!(
Uring::layout::<u8>(count).expect("native mapping").get(),
count
);
}
for count in [1, 512, isize::MAX as usize / mem::size_of::<u64>()] {
assert_eq!(
Uring::layout::<u64>(count).expect("native mapping").get(),
count * mem::size_of::<u64>()
);
}
}
#[test]
fn keeps_wrapper_layout() {
assert_eq!(mem::size_of::<Option<Borrowed<'static>>>(), 72);
assert_eq!(mem::align_of::<<Uring as Source>::Enter<'static, ()>>(), 4);
}
#[test]
fn timeout_accepts_duration() {
let result = Timeout::try_from(Duration::new(1, 999_999_999));
assert!(result.is_ok());
let edge = Duration::new(i64::MAX as u64, 999_999_999);
assert!(Timeout::try_from(edge).is_ok());
}
#[test]
fn timeout_overflow() {
let value = Duration::from_secs(i64::MAX as u64 + 1);
let overflow = Timeout::try_from(value)
.err()
.expect("out-of-range timeout was accepted");
assert_eq!(overflow.requested(), value);
}
#[test]
fn open_keeps_paths() {
use std::{fs::File, os::fd, ptr};
use request::Request as _;
let dir = File::open(env!("CARGO_MANIFEST_DIR")).expect("package directory");
let options = Borrowed::options(file::Open::READ, file::Mode::new(0));
let path = c"entry";
let entry = Borrowed::open(fd::AsFd::as_fd(&dir), path, &options);
let data = encoded(&entry);
assert_eq!(data[0], 28, "IORING_OP_OPENAT2");
assert_eq!(data[1], 0);
assert_eq!(&data[4..8], &fd::AsRawFd::as_raw_fd(&dir).to_ne_bytes());
assert_eq!(
&data[8..16],
&(ptr::from_ref(&options) as u64).to_ne_bytes()
);
assert_eq!(&data[16..24], &(path.as_ptr() as u64).to_ne_bytes());
assert_eq!(&data[24..28], &24_u32.to_ne_bytes(), "open_how size");
assert_eq!(&data[28..], &[0; 36]);
}
#[test]
fn names_keep_async() {
use std::{fs::File, os::fd};
use request::Request as _;
let dir = File::open(env!("CARGO_MANIFEST_DIR")).expect("package directory");
let raw = fd::AsRawFd::as_raw_fd(&dir).to_ne_bytes();
let old = c"old";
let new = c"new";
let rename = Borrowed::rename(fd::AsFd::as_fd(&dir), old, new);
let unlink = Borrowed::unlink(fd::AsFd::as_fd(&dir), old);
let rename = encoded(&rename);
let unlink = encoded(&unlink);
assert_eq!(rename[0], 35, "IORING_OP_RENAMEAT");
assert_eq!(unlink[0], 36, "IORING_OP_UNLINKAT");
for entry in [&rename, &unlink] {
assert_eq!(entry[1], 1 << 4, "IOSQE_ASYNC");
assert_eq!(&entry[4..8], &raw);
assert_eq!(&entry[16..24], &(old.as_ptr() as u64).to_ne_bytes());
assert_eq!(&entry[28..], &[0; 36]);
}
assert_eq!(&rename[8..16], &(new.as_ptr() as u64).to_ne_bytes());
assert_eq!(&rename[24..28], &raw);
assert_eq!(&unlink[8..16], &[0; 8]);
assert_eq!(&unlink[24..28], &[0; 4]);
}
#[test]
fn offset_keeps_position() {
use std::{fs::File, os::fd};
use o3::buffer::bytes;
use request::Request as _;
let file = File::open(env!("CARGO_MANIFEST_DIR")).expect("package directory");
let input = bytes::Prefix::try_new(b"data".as_slice()).expect("bounded input");
for offset in [0, i64::MAX as u64] {
let entry = Borrowed::write(
fd::AsFd::as_fd(&file),
input,
Offset::new(offset).expect("absolute position"),
);
let data = encoded(&entry);
assert_eq!(data[0], 23, "IORING_OP_WRITE");
assert_eq!(data[1], 1 << 4, "IOSQE_ASYNC");
assert_eq!(&data[8..16], &offset.to_ne_bytes());
assert_eq!(&data[24..28], &4_u32.to_ne_bytes());
}
}
#[test]
fn captures_before_call() {
let closed = unsafe { libc::close(-1) };
let fd_fault = Uring::try_get().expect("errno slot").expect("failed close");
Uring::clear();
assert_eq!(Uring::try_get(), Ok(None));
let missing = unsafe { libc::access(c"".as_ptr(), libc::F_OK) };
let path = Uring::try_get()
.expect("errno slot")
.expect("failed access");
assert_eq!(closed, -1);
assert_eq!(missing, -1);
assert_eq!(fd_fault, Errno::BAD_DESCRIPTOR);
assert_eq!(path.code().get(), libc::ENOENT);
}
#[test]
fn unix_path_extent() {
let offset = mem::offset_of!(libc::sockaddr_un, sun_path);
let capacity = mem::size_of::<libc::sockaddr_un>() - offset;
let maximum = capacity - usize::from(<Uring as addr::Source>::UNIX_TERMINATED);
let bytes = [b'p'; mem::size_of::<libc::sockaddr_un>()];
let address = addr::Unix::from_path::<Uring>(&bytes[..maximum]).expect("native path limit");
let (raw, length) = address.as_addr().parts();
assert_eq!(
length.get(),
offset + maximum + usize::from(maximum < capacity),
);
let encoded = unsafe { slice::from_raw_parts(raw.cast::<u8>().add(offset), maximum) };
assert_eq!(encoded, &bytes[..maximum]);
assert!(matches!(
addr::Unix::from_path::<Uring>(&bytes[..maximum + 1]),
Err(addr::PathError::Length { actual, maximum: limit })
if actual == maximum + 1 && limit == maximum
));
}
#[test]
fn unix_abstract_extent() {
let offset = mem::offset_of!(libc::sockaddr_un, sun_path);
let maximum = mem::size_of::<libc::sockaddr_un>() - offset - 1;
let mut bytes = [b'n'; mem::size_of::<libc::sockaddr_un>()];
bytes[..4].copy_from_slice(&process::id().to_ne_bytes());
bytes[4] = 0;
let address = addr::Unix::from_name::<Uring>(&bytes[..maximum]);
let address = address.expect("native abstract name limit");
let socket = Uring::datagram::<Errno>(Domain::Unix).expect("abstract datagram socket");
address
.as_addr()
.try_bind::<Uring, Errno>(socket.as_fd())
.expect("bind binary abstract name");
let mut storage = addr::Storage::empty();
let local = addr::Addr::local::<Uring, Errno>(socket.as_fd(), &mut storage)
.expect("native abstract address");
let (raw, length) = local.parts();
assert_eq!(length.get(), offset + 1 + maximum);
let encoded = unsafe { slice::from_raw_parts(raw.cast::<u8>().add(offset), maximum + 1) };
assert_eq!(encoded[0], 0);
assert_eq!(&encoded[1..], &bytes[..maximum]);
assert!(matches!(
addr::Unix::from_name::<Uring>(&bytes[..maximum + 1]),
Err(addr::PathError::Length { actual, maximum: limit })
if actual == maximum + 1 && limit == maximum
));
}
#[test]
fn mkdir_keeps_failure() {
use dope_sys::io::file::File as _;
let nonce = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.expect("fixture clock")
.as_nanos();
let temp =
Directory::try_new(&std::env::temp_dir(), "mkdir", nonce).expect("isolated directory");
let mut path = temp.c_path().to_bytes().to_vec();
path.extend_from_slice(b"/child");
let path = std::ffi::CString::new(path).expect("child path");
Uring::mkdir::<Errno>(&path, Mode::new(0o700)).expect("create directory");
assert!(
Uring::stat::<Errno>(&path)
.expect("directory metadata")
.kind()
.is_dir()
);
let failure = Uring::mkdir::<kernel::Errno<()>>(&path, Mode::new(0o700));
Uring::clear();
assert_eq!(failure, Err(kernel::Errno::from(Errno::ALREADY_EXISTS)));
fs::remove_dir(temp.path().join("child")).expect("child directory cleanup");
}
#[test]
fn keeps_buffered_entries() {
use dope_sys::io::file::Dir;
let nonce = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.expect("fixture clock")
.as_nanos();
let temp = Directory::try_new(&std::env::temp_dir(), "directory_entries", nonce)
.expect("isolated directory");
fs::write(temp.path().join("data"), b"").expect("entry fixture");
let mut dir = Dir::<Uring>::open::<Errno>(temp.c_path()).expect("open directory");
let first = {
let (_, mut entries) = dir.entries();
entries
.try_next::<Errno>()
.expect("first read")
.expect("first entry")
.name
.to_owned()
};
let mut names = vec![first];
let (_, mut entries) = dir.entries();
while let Some(entry) = entries.try_next::<Errno>().expect("remaining entries") {
if let Some(kind) = entry.kind {
assert_eq!(kind.is_regular(), entry.name == c"data");
}
names.push(entry.name.to_owned());
}
names.sort_unstable();
assert_eq!(names, [c".", c"..", c"data"]);
drop(dir);
fs::remove_file(temp.path().join("data")).expect("entry fixture cleanup");
}