1 files changed, 190 insertions, 0 deletions
diff --git a/third_party/rust/nix/test/test_mq.rs b/third_party/rust/nix/test/test_mq.rs
new file mode 100644
index 0000000000..7b48e7ac78
--- /dev/null
+++ b/third_party/rust/nix/test/test_mq.rs
@@ -0,0 +1,190 @@
+use cfg_if::cfg_if;
+use std::ffi::CString;
+use std::str;
+
+use nix::errno::Errno;
+use nix::mqueue::{mq_attr_member_t, mq_close, mq_open, mq_receive, mq_send};
+use nix::mqueue::{MQ_OFlag, MqAttr};
+use nix::sys::stat::Mode;
+
+// Defined as a macro such that the error source is reported as the caller's location.
+macro_rules! assert_attr_eq {
+    ($read_attr:ident, $initial_attr:ident) => {
+        cfg_if! {
+            if #[cfg(any(target_os = "dragonfly", target_os = "netbsd"))] {
+                // NetBSD (and others which inherit its implementation) include other flags
+                // in read_attr, such as those specified by oflag. Just make sure at least
+                // the correct bits are set.
+                assert_eq!($read_attr.flags() & $initial_attr.flags(), $initial_attr.flags());
+                assert_eq!($read_attr.maxmsg(), $initial_attr.maxmsg());
+                assert_eq!($read_attr.msgsize(), $initial_attr.msgsize());
+                assert_eq!($read_attr.curmsgs(), $initial_attr.curmsgs());
+            } else {
+                assert_eq!($read_attr, $initial_attr);
+            }
+        }
+    }
+}
+
+#[test]
+fn test_mq_send_and_receive() {
+    const MSG_SIZE: mq_attr_member_t = 32;
+    let attr = MqAttr::new(0, 10, MSG_SIZE, 0);
+    let mq_name = &CString::new(b"/a_nix_test_queue".as_ref()).unwrap();
+
+    let oflag0 = MQ_OFlag::O_CREAT | MQ_OFlag::O_WRONLY;
+    let mode = Mode::S_IWUSR | Mode::S_IRUSR | Mode::S_IRGRP | Mode::S_IROTH;
+    let r0 = mq_open(mq_name, oflag0, mode, Some(&attr));
+    if let Err(Errno::ENOSYS) = r0 {
+        println!("message queues not supported or module not loaded?");
+        return;
+    };
+    let mqd0 = r0.unwrap();
+    let msg_to_send = "msg_1";
+    mq_send(&mqd0, msg_to_send.as_bytes(), 1).unwrap();
+
+    let oflag1 = MQ_OFlag::O_CREAT | MQ_OFlag::O_RDONLY;
+    let mqd1 = mq_open(mq_name, oflag1, mode, Some(&attr)).unwrap();
+    let mut buf = [0u8; 32];
+    let mut prio = 0u32;
+    let len = mq_receive(&mqd1, &mut buf, &mut prio).unwrap();
+    assert_eq!(prio, 1);
+
+    mq_close(mqd1).unwrap();
+    mq_close(mqd0).unwrap();
+    assert_eq!(msg_to_send, str::from_utf8(&buf[0..len]).unwrap());
+}
+
+#[test]
+fn test_mq_getattr() {
+    use nix::mqueue::mq_getattr;
+    const MSG_SIZE: mq_attr_member_t = 32;
+    let initial_attr = MqAttr::new(0, 10, MSG_SIZE, 0);
+    let mq_name = &CString::new(b"/attr_test_get_attr".as_ref()).unwrap();
+    let oflag = MQ_OFlag::O_CREAT | MQ_OFlag::O_WRONLY;
+    let mode = Mode::S_IWUSR | Mode::S_IRUSR | Mode::S_IRGRP | Mode::S_IROTH;
+    let r = mq_open(mq_name, oflag, mode, Some(&initial_attr));
+    if let Err(Errno::ENOSYS) = r {
+        println!("message queues not supported or module not loaded?");
+        return;
+    };
+    let mqd = r.unwrap();
+
+    let read_attr = mq_getattr(&mqd).unwrap();
+    assert_attr_eq!(read_attr, initial_attr);
+    mq_close(mqd).unwrap();
+}
+
+// FIXME: Fix failures for mips in QEMU
+#[test]
+#[cfg_attr(
+    all(qemu, any(target_arch = "mips", target_arch = "mips64")),
+    ignore
+)]
+fn test_mq_setattr() {
+    use nix::mqueue::{mq_getattr, mq_setattr};
+    const MSG_SIZE: mq_attr_member_t = 32;
+    let initial_attr = MqAttr::new(0, 10, MSG_SIZE, 0);
+    let mq_name = &CString::new(b"/attr_test_get_attr".as_ref()).unwrap();
+    let oflag = MQ_OFlag::O_CREAT | MQ_OFlag::O_WRONLY;
+    let mode = Mode::S_IWUSR | Mode::S_IRUSR | Mode::S_IRGRP | Mode::S_IROTH;
+    let r = mq_open(mq_name, oflag, mode, Some(&initial_attr));
+    if let Err(Errno::ENOSYS) = r {
+        println!("message queues not supported or module not loaded?");
+        return;
+    };
+    let mqd = r.unwrap();
+
+    let new_attr = MqAttr::new(0, 20, MSG_SIZE * 2, 100);
+    let old_attr = mq_setattr(&mqd, &new_attr).unwrap();
+    assert_attr_eq!(old_attr, initial_attr);
+
+    // No changes here because according to the Linux man page only
+    // O_NONBLOCK can be set (see tests below)
+    #[cfg(not(any(target_os = "dragonfly", target_os = "netbsd")))]
+    {
+        let new_attr_get = mq_getattr(&mqd).unwrap();
+        assert_ne!(new_attr_get, new_attr);
+    }
+
+    let new_attr_non_blocking = MqAttr::new(
+        MQ_OFlag::O_NONBLOCK.bits() as mq_attr_member_t,
+        10,
+        MSG_SIZE,
+        0,
+    );
+    mq_setattr(&mqd, &new_attr_non_blocking).unwrap();
+    let new_attr_get = mq_getattr(&mqd).unwrap();
+
+    // now the O_NONBLOCK flag has been set
+    #[cfg(not(any(target_os = "dragonfly", target_os = "netbsd")))]
+    {
+        assert_ne!(new_attr_get, initial_attr);
+    }
+    assert_attr_eq!(new_attr_get, new_attr_non_blocking);
+    mq_close(mqd).unwrap();
+}
+
+// FIXME: Fix failures for mips in QEMU
+#[test]
+#[cfg_attr(
+    all(qemu, any(target_arch = "mips", target_arch = "mips64")),
+    ignore
+)]
+fn test_mq_set_nonblocking() {
+    use nix::mqueue::{mq_getattr, mq_remove_nonblock, mq_set_nonblock};
+    const MSG_SIZE: mq_attr_member_t = 32;
+    let initial_attr = MqAttr::new(0, 10, MSG_SIZE, 0);
+    let mq_name = &CString::new(b"/attr_test_get_attr".as_ref()).unwrap();
+    let oflag = MQ_OFlag::O_CREAT | MQ_OFlag::O_WRONLY;
+    let mode = Mode::S_IWUSR | Mode::S_IRUSR | Mode::S_IRGRP | Mode::S_IROTH;
+    let r = mq_open(mq_name, oflag, mode, Some(&initial_attr));
+    if let Err(Errno::ENOSYS) = r {
+        println!("message queues not supported or module not loaded?");
+        return;
+    };
+    let mqd = r.unwrap();
+    mq_set_nonblock(&mqd).unwrap();
+    let new_attr = mq_getattr(&mqd);
+    let o_nonblock_bits = MQ_OFlag::O_NONBLOCK.bits() as mq_attr_member_t;
+    assert_eq!(new_attr.unwrap().flags() & o_nonblock_bits, o_nonblock_bits);
+    mq_remove_nonblock(&mqd).unwrap();
+    let new_attr = mq_getattr(&mqd);
+    assert_eq!(new_attr.unwrap().flags() & o_nonblock_bits, 0);
+    mq_close(mqd).unwrap();
+}
+
+#[test]
+fn test_mq_unlink() {
+    use nix::mqueue::mq_unlink;
+    const MSG_SIZE: mq_attr_member_t = 32;
+    let initial_attr = MqAttr::new(0, 10, MSG_SIZE, 0);
+    let mq_name_opened = &CString::new(b"/mq_unlink_test".as_ref()).unwrap();
+    #[cfg(not(any(target_os = "dragonfly", target_os = "netbsd")))]
+    let mq_name_not_opened =
+        &CString::new(b"/mq_unlink_test".as_ref()).unwrap();
+    let oflag = MQ_OFlag::O_CREAT | MQ_OFlag::O_WRONLY;
+    let mode = Mode::S_IWUSR | Mode::S_IRUSR | Mode::S_IRGRP | Mode::S_IROTH;
+    let r = mq_open(mq_name_opened, oflag, mode, Some(&initial_attr));
+    if let Err(Errno::ENOSYS) = r {
+        println!("message queues not supported or module not loaded?");
+        return;
+    };
+    let mqd = r.unwrap();
+
+    let res_unlink = mq_unlink(mq_name_opened);
+    assert_eq!(res_unlink, Ok(()));
+
+    // NetBSD (and others which inherit its implementation) defer removing the message
+    // queue name until all references are closed, whereas Linux and others remove the
+    // message queue name immediately.
+    #[cfg(not(any(target_os = "dragonfly", target_os = "netbsd")))]
+    {
+        let res_unlink_not_opened = mq_unlink(mq_name_not_opened);
+        assert_eq!(res_unlink_not_opened, Err(Errno::ENOENT));
+    }
+
+    mq_close(mqd).unwrap();
+    let res_unlink_after_close = mq_unlink(mq_name_opened);
+    assert_eq!(res_unlink_after_close, Err(Errno::ENOENT));
+}