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use std::ffi::CString;
use std::str;
use nix::errno::Errno;
use nix::mqueue::{mq_open, mq_close, mq_send, mq_receive, mq_attr_member_t};
use nix::mqueue::{MqAttr, MQ_OFlag};
use nix::sys::stat::Mode;
#[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]
#[cfg(not(any(target_os = "netbsd")))]
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_eq!(read_attr, initial_attr);
mq_close(mqd).unwrap();
}
// FIXME: Fix failures for mips in QEMU
#[test]
#[cfg(not(any(target_os = "netbsd")))]
#[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_eq!(old_attr, initial_attr);
let new_attr_get = mq_getattr(mqd).unwrap();
// The following tests make sense. No changes here because according to the Linux man page only
// O_NONBLOCK can be set (see tests below)
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
assert_ne!(new_attr_get, initial_attr);
assert_eq!(new_attr_get, new_attr_non_blocking);
mq_close(mqd).unwrap();
}
// FIXME: Fix failures for mips in QEMU
#[test]
#[cfg(not(any(target_os = "netbsd")))]
#[cfg_attr(all(
qemu,
any(target_arch = "mips", target_arch = "mips64")
), ignore
)]
fn test_mq_set_nonblocking() {
use nix::mqueue::{mq_getattr, mq_set_nonblock, mq_remove_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);
assert_eq!(new_attr.unwrap().flags(), MQ_OFlag::O_NONBLOCK.bits() as mq_attr_member_t);
mq_remove_nonblock(mqd).unwrap();
let new_attr = mq_getattr(mqd);
assert_eq!(new_attr.unwrap().flags(), 0);
mq_close(mqd).unwrap();
}
#[test]
#[cfg(not(any(target_os = "netbsd")))]
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();
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(()) );
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) );
}
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