1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
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));
}
|
